U.S. patent application number 16/374780 was filed with the patent office on 2019-08-08 for wheel positioning system and method of use thereof.
The applicant listed for this patent is PLOMBCO INC.. Invention is credited to Lorrain BOULERICE, Stephane BOULET, Maxime CHEVRIER, Denis LEGAULT, Mathieu PARE, Jean PREVOST.
Application Number | 20190242775 16/374780 |
Document ID | / |
Family ID | 59678862 |
Filed Date | 2019-08-08 |
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United States Patent
Application |
20190242775 |
Kind Code |
A1 |
CHEVRIER; Maxime ; et
al. |
August 8, 2019 |
WHEEL POSITIONING SYSTEM AND METHOD OF USE THEREOF
Abstract
A wheel and tire assembly positioning system for automatically
identifying characteristics of a wheel is presented, the wheel and
tire assembly positioning system comprising a mechanical mechanism
for transporting a wheel and tire assembly, and a control module
connected to a mechanical mechanism actuator managing the transport
of the wheel and tire assembly, a profile sensor adapted to sense a
profile of an interior portion of the wheel to identify the
characteristics of the wheel and tire assembly, and a sensor
adapted to identify a wheel reference location.
Inventors: |
CHEVRIER; Maxime;
(Saint-Michel, CA) ; PARE; Mathieu; (Beauharnois,
CA) ; BOULET; Stephane; (St-Urbain-Premier, CA)
; BOULERICE; Lorrain; (Saint-Chrysostome, CA) ;
LEGAULT; Denis; (Salaberry-de-Valleyfield, CA) ;
PREVOST; Jean; (Notre-Dame-de-l' le-Perrot, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
PLOMBCO INC. |
Salaberry-de-Valleyfield |
|
CA |
|
|
Family ID: |
59678862 |
Appl. No.: |
16/374780 |
Filed: |
April 4, 2019 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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15238827 |
Aug 17, 2016 |
10260984 |
|
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16374780 |
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15056445 |
Feb 29, 2016 |
10222288 |
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15238827 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B65H 75/14 20130101;
B65H 2701/37 20130101; G01M 1/326 20130101; B65H 75/182 20130101;
B65H 75/44 20130101; B65H 49/32 20130101 |
International
Class: |
G01M 1/32 20060101
G01M001/32; B65H 75/44 20060101 B65H075/44; B65H 49/32 20060101
B65H049/32; B65H 75/14 20060101 B65H075/14; B65H 75/18 20060101
B65H075/18 |
Claims
1. A wheel and tire assembly positioning system for automatically
identifying characteristics of a wheel, the wheel and tire assembly
positioning system comprising: a mechanical mechanism for
transporting a wheel and tire assembly; and a control module
connected to a mechanical mechanism actuator managing the transport
of the wheel and tire assembly; a profile sensor adapted to sense a
profile of an interior portion of the wheel to identify the
characteristics of the wheel and tire assembly; and a sensor
adapted to identify a wheel reference location.
2. The wheel and tire assembly positioning system of claim 1,
wherein the profile sensor adapted to sense a profile of an
interior portion of a wheel is directed at an angle toward the
interior portion of the wheel.
3. The wheel and tire assembly positioning system of claim 1,
wherein identifying the characteristics of the wheel and tire
assembly is made when the wheel and tire assembly is transported
with the mechanical mechanism toward a wheel-balancing weights
application position.
4. The wheel and tire assembly positioning system of claim 1,
wherein the characteristics of the wheel and tire assembly is not
collected from a wheel and tire assembly characteristics
database.
5. The wheel and tire assembly positioning system of claim 1,
wherein the wheel positioning system further cooperates with a
dispensing module capable of providing a first predetermined
quantity of wheel-balancing weights based on the identified
characteristics of the wheel and tire assembly, and an application
module capable of securing the first predetermined quantity of
wheel-balancing weights to a first position on the wheel and tire
assembly with a weights-securing tool.
6. The wheel and tire assembly positioning system of claim 5,
wherein the dispensing module is further capable of providing a
second predetermined quantity of wheel-balancing weights on a basis
of the first position, and the application module is further
capable of securing the second predetermined quantity of
wheel-balancing weights to a second position on the wheel and tire
assembly with a weight-securing tool.
7. The wheel and tire assembly positioning system of claim 1,
wherein the mechanical mechanism is a conveyor.
8. The wheel and tire assembly positioning system of claim 7,
wherein the conveyor includes a pair of spaced apart
wheel-supporting belts.
9. The wheel and tire assembly positioning system of claim 1,
wherein the mechanical mechanism is actuated with a motor.
10. The wheel and tire assembly positioning system of claim 1,
wherein the mechanical mechanism is an industrial robot.
11. The wheel and tire assembly positioning system of claim 1,
wherein the mechanical mechanism is supporting the wheel and tire
assembly horizontally.
12. The wheel and tire assembly positioning system of claim 1,
wherein the mechanical mechanism is supporting the wheel and tire
assembly above the ground to allow balancing weights installation
to the wheel and tire assembly from underneath thereof.
13. The wheel and tire assembly positioning system of claim 1,
wherein the profile sensor is sensing an encoder associated with
the mechanical mechanism to identify a transport speed of the wheel
and tire assembly with the mechanical mechanism.
14. The wheel and tire assembly positioning system of claim 1,
wherein the control module is further connected to an image sensor
for sensing an image of the wheel and tire assembly.
15. The wheel and tire assembly positioning system of claim 14,
wherein the image sensor is adapted to move with the wheel and tire
assembly.
16. The wheel and tire assembly positioning system of claim 14,
wherein the image sensor is identifying a radius of the wheel.
17. The wheel and tire assembly positioning system of claim 14,
wherein the image sensor is identifying a location of an indicator
located on the tire representing one of a lightest portion and a
heaviest portion of the tire.
18. The wheel and tire assembly positioning system of claim 17,
wherein the wheel positioning system further includes an
application module capable of securing a predetermined quantity of
wheel-balancing weights to an angular position on the wheel with a
weights-securing tool on a basis of the identified indicator.
19. The wheel and tire assembly positioning system of claim 14,
wherein the image sensor is sensing an edge of the tire and tire
assembly on the mechanical mechanism, and wherein the sensing of
the edge of the tire and wheel assembly is used to manage the
transport of the wheel and tire assembly with the mechanical
mechanism.
20. The wheel and tire assembly positioning system of claim 14,
wherein the image sensor is sensing an edge of the tire and tire
assembly on the mechanical mechanism, and wherein the sensing of
the edge of the tire and tire assembly is used to calculate a
discrepancy between a calculated weights-installation position of
the wheel and tire assembly and an actual physical
weights-installation position of the wheel and tire assembly.
Description
CROSS-REFERENCE
[0001] The present application claims priority from and is a
continuing application of U.S. patent application Ser. No.
15/238,827, filed Aug. 17, 2016, entitled SPOOL MANAGEMENT SYSTEM
AND METHOD OF USE THEREOF, which claims priority from and is
{circumflex over ( )}a continuing application of U.S. patent
application Ser. No. 15/056,445, filed Feb. 29, 2016, entitled
BALANCING WEIGHT APPLICATION MACHINE AND METHOD OF USE THEREOF that
is incorporated herein by reference in its entirety.
FIELD OF THE INVENTION
[0002] This invention relates to an apparatus for providing and
installing wheel-balancing weights. More precisely, the present
invention relates to a wheel positioning system for installing
wheel-balancing weights.
BACKGROUND OF THE INVENTION
[0003] Wheel-balancing weights (or wheel weights, wheel balance
weights . . . ) are commonly used on wheeled vehicles to improve
the static and dynamic balancing of the wheel assembly. To balance
the wheels, each wheel is rotated with a balancing weight
application apparatus that analyses and detects uneven weight
distribution thereof that could generate significant vibrations
when the wheels rotate at various rotating speeds. This undesirable
wheel vibration would be transmitted to the entire vehicle, if not
corrected. Corrective wheel-balancing weights, when required, are
secured on the circumference of the wheel on both the interior and
the exterior sides of the wheel. The addition of required
wheel-balancing weights corrects the polar weight distribution of
the wheel assembly and balances the wheel that rotates without
inducing undesirable vibrations.
[0004] The demand for wheels that are adapted to the design of
vehicles is growing. Wheels aesthetic is therefore a growing
concern for the vehicles manufacturers. Wheel-balancing weights
that are not visible from the exterior of the vehicle are
preferably used to improve the look of the wheels. This hidden type
of wheel-balancing weights is glued on the interior surface of the
wheels in contrast with visible wheel-balancing weights commonly
secured with a clip to the exterior edges of the wheels.
[0005] Therefore, there exists a need in the art for an improved
apparatus for detecting wheel and tire configurations, providing
and installing wheel-balancing weights on the wheel. A system for
analyzing wheel configurations, managing the required number of
wheel-balancing weights and installing the wheel-balancing weights
on wheels is also in demand. There is also a need in the art for an
autonomous apparatus that would minimize human interventions for
balancing wheels. And there is a need for an improved fit between a
polymer-covered wheel-balancing weight and a method of
manufacturing same over the existing art.
SUMMARY OF THE INVENTION
[0006] It is one aspect of the present invention to alleviate one
or more of the drawbacks of the background art by addressing one or
more of the existing needs in the art.
[0007] An aspect of the present invention provides, in accordance
with at least one embodiment thereof, an integrated wheel-balancing
weights application system.
[0008] An aspect of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus with automatic detection of wheel
characteristics for properly installing balancing weights on a
wheel.
[0009] An aspect of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus for installing balancing weights on a wheel
without requiring a data base of wheels' configuration to apply
weights to a pre-determined location on wheels.
[0010] An aspect of the present invention provides, in accordance
with at least one embodiment thereof, a wheel-balancing weights
application system designed to receive a strip of wheel-balancing
weights and feed the strip to dispense a desired amount of weights
for installation on a wheel.
[0011] An aspect of the present invention provides, in accordance
with at least one embodiment thereof, a wheel-balancing weights
application system adapted to provide weights on a basis of
corrective wheel-balancing weights data provided by another
system.
[0012] An aspect of the present invention provides, in accordance
with at least one embodiment thereof, a modular wheel-balancing
weights application system; the modules may include a supplying
module, a feeding module, a dispensing module, an application
module and a conveying module.
[0013] An aspect of the present invention provides, in accordance
with at least one embodiment thereof, a wheel-balancing weights
application system capable of balancing different types of wheels
without reprograming the wheel-balancing weights application
system.
[0014] An aspect of the present invention provides, in accordance
with at least one embodiment thereof, a wheel-balancing weights
application system that can manage different weight colors (e.g.
grey, black . . . ), weight finishes (e.g. mate, egg shell) and/or
weight plating (e.g. chrome, zinc . . . ) for wheels of different
colors, finishes and plating.
[0015] An aspect of the present invention provides, in accordance
with at least one embodiment thereof, a wheel-balancing weights
application system with a plurality of dispensing module for
recharging strips of weights without stopping the providing
process.
[0016] An object of the present invention provides, in accordance
with at least one embodiment thereof, an exchangeable
spool-supporting pallet adapted to be operatively positioned for
feeding the strip of weights to dispense a desired mass of weights
for balancing a wheel.
[0017] An object of the present invention provides, in accordance
with at least one embodiment thereof, a spool-receiver adapted to
operatively interact with a plurality of weights-supporting spools
for selectively unwind the spool.
[0018] An object of the present invention provides, in accordance
with at least one embodiment thereof, a spool-receiver including a
plurality of axially stackable strip-receiving spools; the spools
being adapted to provide a plurality of different weight
configurations.
[0019] An object of the present invention provides, in accordance
with at least one embodiment thereof, a weights strip thickness
configured to sense the remaining quantity of strip on a
strip-receiving spool.
[0020] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus including a strip-receiving spool
identification mechanism; the spool identification mechanism may
include RFID spool recognition, bar code recognition and
identification number for compatibility with the apparatus and
traceability of the weights.
[0021] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus including a loop of strip of weights after
the strip-receiving spool for damping strip-feeding speed
fluctuations and absorbing lateral misalignment between the
strip-receiving spool and the strip feeder.
[0022] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus including an automatic transversal weights
strip alignment mechanism.
[0023] An object of the present invention provides, in accordance
with at least one embodiment thereof, a feeding mechanism using a
toothed drive wheel including a shape engaging a profile of the
weights.
[0024] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus including a loop of strip of weights after
the feeding module for damping strip-feeding speed fluctuations
between the feeder module and the dispensing module.
[0025] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus including automatic initialization, threading
and feeding of new weights strips.
[0026] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus including a robot for applying a desired
quantity of weights to a wheel. Alternatively, a mechanical arm can
be used for applying the desired quantity of weights to the wheel
in order to avoid extensive acquisition cost of a robot.
[0027] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus including a robot to pull and push on a strip
of weights, the robot being configured to pull and push on the
strip of weights of a predetermined length.
[0028] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus including a robot to pull and push on a strip
of weights to engage a protective tape liner to remove the
protective tape liner prior to installation of the weights on a
wheel.
[0029] An object of the present invention provides, in accordance
with at least one embodiment thereof, a servomotor driving a
weights-engaging toothed member to pull and push on a strip of
weights and provide a predetermined length of strip for application
to a wheel.
[0030] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus including a servomotor to selectively pull or
push a strip of weights to engage a protective tape liner with a
liner peeler mechanism to remove the protective tape liner prior to
installation of the weights on a wheel.
[0031] An object of the present invention provides, in accordance
with at least one embodiment thereof, a supporting member
supporting weights thereon and allowing a tool to take the weights
thereon and move the weights to a wheel.
[0032] An object of the present invention provides, in accordance
with at least one embodiment thereof, a dispensing module including
guiding rails maintaining a strip of weights in a desired position
when the strip of weights is cut in a desired length.
[0033] An object of the present invention provides, in accordance
with at least one embodiment thereof, an automatic weights strip
junction presence sensing capability.
[0034] An object of the present invention provides, in accordance
with at least one embodiment thereof, a protection liner peeler
mechanism.
[0035] An object of the present invention provides, in accordance
with at least one embodiment thereof, a protection liner channeling
and cutting tool.
[0036] An object of the present invention provides, in accordance
with at least one embodiment thereof, a protection liner sensing
mechanism configured to enable an action when a protection liner is
sensed after the peeling mechanism.
[0037] An object of the present invention provides, in accordance
with at least one embodiment thereof, a strip cutting tool
including a ratchet action.
[0038] An object of the present invention provides, in accordance
with at least one embodiment thereof, a robot with a tool including
a plurality of weights holder; the weights holders being positioned
in opposite directions and optionally offset in respect with each
other.
[0039] An object of the present invention provides, in accordance
with at least one embodiment thereof, a robot for securing weights
on a wheel without touching the wheel.
[0040] An object of the present invention provides, in accordance
with at least one embodiment thereof, a tool for moving weights to
a wheel using magnetic force to temporarily secure the weights to
the tool.
[0041] An object of the present invention provides, in accordance
with at least one embodiment thereof, a tool for securing weights
to a wheel using a trailing end thereof to begin a sequential
sticking of a desired length of a strip of weights on a wheel.
[0042] An object of the present invention provides, in accordance
with at least one embodiment thereof, a tool for securing weights
receiving the weights on the trailing side of the tool.
[0043] An object of the present invention provides, in accordance
with at least one embodiment thereof, a robot for securing weights
on a wheel that is using triangulation sensing of the wheel to
locate a tool of the robot on the wheel and determine weight
application locations in accordance with the wheel profiling.
[0044] An object of the present invention provides, in accordance
with at least one embodiment thereof, a robot with a
weight-securing tool usable to cut a portion of the strip of
weights with a pivotal motion in respect with a longitudinal
direction of the strip.
[0045] An object of the present invention provides, in accordance
with at least one embodiment thereof, a robot with a
weight-securing tool capable of securing weights on both sides of
the wheel.
[0046] An object of the present invention provides, in accordance
with at least one embodiment thereof, a robot control using torque
sensing (i.e. servo float) capability to use a predetermined force,
pressure, when securing the weights on the wheel.
[0047] An object of the present invention provides, in accordance
with at least one embodiment thereof, conveyor for moving a wheel
in a weight-installation position.
[0048] An object of the present invention provides, in accordance
with at least one embodiment thereof, a conveyor including a
calibration reference.
[0049] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus that is adapted to secure strips of weights
on a wheel that does not need to be at a determined position on the
conveyor.
[0050] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus that is identifying a profile of a wheel by
sensing with a sensor the characteristics of the wheel when the
wheel is moving on the conveyor.
[0051] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus that is identifying relevant characteristics
of a wheel and tire assembly for each wheel to be balanced without
recourse to a database of wheels' characteristics.
[0052] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus that is automatically identifying a wheel
size, a wheel center position, a wheel color and weight(s)
localization mark(s) on a tire of the wheel, identification number,
wheel model number, wheel diameter, wheel offset and other markings
with a camera sensor.
[0053] An object of the present invention provides, in accordance
with at least one embodiment thereof, a balancing weight
application apparatus that is using a colored camera flash.
[0054] An object of the present invention provides, in accordance
with at least one embodiment thereof, a sensor (e.g. laser sensor,
3D image capture, distance sensor, laser grid deformation sensing,
line scanner) for acquiring a wheel profile.
[0055] An object of the present invention provides, in accordance
with at least one embodiment thereof, a conveyor including a wheel
presence sensor disposed at an angle to sense a wheel location on
the conveyor without interfering with a tire's threads.
[0056] An object of the invention provides, in accordance with at
least one embodiment thereof, a spool-supplying apparatus capable
of supporting a plurality of spools thereon and a spool unwinder
for collecting and managing the unwinding of one spool.
[0057] An object of the invention provides, in accordance with at
least one embodiment thereof, a spool-supplying apparatus including
a spool-angular locating member for preventing undesirable
unwinding of the plurality of spools.
[0058] An object of the invention provides, in accordance with at
least one embodiment thereof, a spool-supplying apparatus including
a spool push member movable along a spool-supporting shaft to push
at least one spool on the spool-supporting shaft toward an open end
of the spool-supporting shaft.
[0059] An object of the invention provides, in accordance with at
least one embodiment thereof, a spool-supplying apparatus
comprising a spool support frame, a spool-supporting axle secured,
at a first end thereof, to the spool support frame, the
spool-supporting axle being configured to support a plurality of
axially-supported spools thereon, the plurality of spools axially
engaging the spool-supporting axle via a second end thereof; and a
spool unwinder operatively associated with the spool-supplying
apparatus for unwinding a spool, the spool unwinder being
configured to rotatably engage a first spool from the second end of
the spool-supporting axle.
[0060] Additional and/or alternative advantages and salient
features of the invention will become apparent from the following
detailed description, which, taken in conjunction with the annexed
drawings, disclose preferred embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0061] Referring now to the drawings which form a part of this
original disclosure:
[0062] FIG. 1 is a side elevation view of a balancing weight
application apparatus in accordance with at least one embodiment of
the invention;
[0063] FIG. 2(A)(i) is a side elevation view of a supplying module
in accordance with at least one embodiment of the invention;
[0064] FIG. 2(A)(ii) is front elevation view of a supplying module
in accordance with at least one embodiment of the invention;
[0065] FIG. 2(A)(iii) is a side elevation view of a supplying
module in accordance with at least one embodiment of the
invention;
[0066] FIG. 2(B)(i) is a side elevation view of a supplying module
in accordance with at least one embodiment of the invention;
[0067] FIG. 2(B)(ii) is a front elevation view of a supplying
module in accordance with at least one embodiment of the
invention;
[0068] FIG. 2(B)(iii) is a side elevation view of a supplying
module in accordance with at least one embodiment of the
invention;
[0069] FIG. 3(A) is a side elevation view of a supplying module in
accordance with at least one embodiment of the invention;
[0070] FIG. 3(B) is an isometric view of a supplying module in
accordance with at least one embodiment of the invention;
[0071] FIG. 3(C) is a side elevation view of a supplying module in
accordance with at least one embodiment of the invention;
[0072] FIG. 3(D) is a front elevation view of a supplying module in
accordance with at least one embodiment of the invention;
[0073] FIG. 4(A) is an isometric view of a spool in accordance with
at least one embodiment of the invention;
[0074] FIG. 4(B) is an isometric view of a spool in accordance with
at least one embodiment of the invention;
[0075] FIG. 5(A) is an isometric view of a portion of a balancing
weights strip in accordance with at least one embodiment of the
invention;
[0076] FIG. 5(B) is an isometric view of a portion of a balancing
weights strip in accordance with at least one embodiment of the
invention;
[0077] FIG. 6(A) is a front isometric view of a supplying module in
accordance with at least one embodiment of the invention;
[0078] FIG. 6(B) is a side elevation view of a supplying module in
accordance with at least one embodiment of the invention;
[0079] FIG. 6(C) is a front elevation view of a supplying module in
accordance with at least one embodiment of the invention;
[0080] FIG. 6(D) is an isometric view of a supplying module in
accordance with at least one embodiment of the invention;
[0081] FIG. 7(A) is a top plan view of a double feeding module and
supplying module in accordance with at least one embodiment of the
invention;
[0082] FIG. 7(B) is a top plan view of a double feeding module and
supplying module in accordance with at least one embodiment of the
invention;
[0083] FIG. 8(A) is a side elevation view of a double feeding
module and supplying module in accordance with at least one
embodiment of the invention;
[0084] FIG. 8(B) is a side elevation view of a double feeding
module and supplying module in accordance with at least one
embodiment of the invention;
[0085] FIG. 9(A) is a side elevation view of a spool in accordance
with at least one embodiment of the invention;
[0086] FIG. 9(B) is a top plan view of a spool in accordance with
at least one embodiment of the invention;
[0087] FIG. 9(C) is a front elevation view of a spool in accordance
with at least one embodiment of the invention;
[0088] FIG. 9(D) is an isometric view of a spool in accordance with
at least one embodiment of the invention;
[0089] FIG. 10(A) is a side elevation view of a spool in accordance
with at least one embodiment of the invention;
[0090] FIG. 10(B) is a front elevation view of a spool in
accordance with at least one embodiment of the invention;
[0091] FIG. 10(C) is an isometric view of a spool in accordance
with at least one embodiment of the invention;
[0092] FIG. 10(D) is a partial side elevation view of a spool in
accordance with at least one embodiment of the invention;
[0093] FIG. 11(A) is a side elevation section view of a feeding
module and supplying module in accordance with at least one
embodiment of the invention;
[0094] FIG. 11(B) is a top plan view of a feeding module and
supplying module in accordance with at least one embodiment of the
invention;
[0095] FIG. 12 is a top plan view of a feeding module and supplying
module in accordance with at least one embodiment of the
invention;
[0096] FIG. 13 is a top plan view of a feeding module and supplying
module in accordance with at least one embodiment of the
invention;
[0097] FIG. 14(A) is an isometric view of a feeding module in
accordance with at least one embodiment of the invention;
[0098] FIG. 14(B) is a partial isometric view of a feeding module
in accordance with at least one embodiment of the invention;
[0099] FIG. 14(C) is a partial isometric view of a feeding module
in accordance with at least one embodiment of the invention;
[0100] FIG. 15(A) is a front elevation view of a dispensing module
in accordance with at least one embodiment of the invention;
[0101] FIG. 15(B) is a side elevation view of a dispensing module
in accordance with at least one embodiment of the invention;
[0102] FIG. 15(C) is an isometric view of a dispensing module in
accordance with at least one embodiment of the invention;
[0103] FIG. 16(A) is a side elevation section view of a portion of
a dispensing module in accordance with at least one embodiment of
the invention;
[0104] FIG. 16(B) is an isometric view of a portion of a dispensing
module in accordance with at least one embodiment of the
invention;
[0105] FIG. 16(C) is a front elevation view of a portion of a
dispensing module in accordance with at least one embodiment of the
invention;
[0106] FIG. 17(A) is a side elevation section view of a portion of
a dispensing module in accordance with at least one embodiment of
the invention;
[0107] FIG. 17(B) is a side elevation section view of a portion of
a dispensing module in accordance with at least one embodiment of
the invention;
[0108] FIG. 17(C) is an isometric view of a portion of a dispensing
module in accordance with at least one embodiment of the
invention;
[0109] FIG. 17(D) is a partial side elevation section view of a
portion of a dispensing module in accordance with at least one
embodiment of the invention;
[0110] FIG. 17(E) is a partial side elevation section view of a
portion of a dispensing module in accordance with at least one
embodiment of the invention;
[0111] FIG. 18(A) is a side elevation view of a dispensing module
in accordance with at least one embodiment of the invention;
[0112] FIG. 18(B) is an isometric view of a dispensing module in
accordance with at least one embodiment of the invention;
[0113] FIG. 18(C) is a partial isometric view of a dispensing
module in accordance with at least one embodiment of the
invention;
[0114] FIG. 19(A) is an isometric view of a dispensing module in
accordance with at least one embodiment of the invention;
[0115] FIG. 19(B) is an isometric view of a dispensing module in
accordance with at least one embodiment of the invention;
[0116] FIG. 20(A) is an isometric view of a portion of a dispensing
module in accordance with at least one embodiment of the
invention;
[0117] FIG. 20(B) is an isometric view of a dispensing module in
accordance with at least one embodiment of the invention;
[0118] FIG. 21(A) is a side elevation section view of a dispensing
module in accordance with at least one embodiment of the
invention;
[0119] FIG. 21(B) is a side elevation section view of a dispensing
module in accordance with at least one embodiment of the
invention;
[0120] FIG. 22(A) is a side elevation view of a dispensing module
in accordance with at least one embodiment of the invention;
[0121] FIG. 22(B) is a side elevation view of a portion of a
dispensing module in accordance with at least one embodiment of the
invention;
[0122] FIG. 22(C) is an isometric view of a dispensing module in
accordance with at least one embodiment of the invention;
[0123] FIG. 22(D) is an isometric view of a portion of a dispensing
module in accordance with at least one embodiment of the
invention;
[0124] FIG. 23(A) is a front elevation view of a portion of a
dispensing module, more precisely a cutting mechanism, in
accordance with at least one embodiment of the invention;
[0125] FIG. 23(B) is a front elevation view of a portion of a
dispensing module, more precisely a cutting mechanism, in
accordance with at least one embodiment of the invention;
[0126] FIG. 23(C) is a side elevation view of a portion of a
dispensing module, more precisely a cutting mechanism, in
accordance with at least one embodiment of the invention;
[0127] FIG. 23(D) is an isometric view of a portion of a dispensing
module, more precisely a cutting mechanism, in accordance with at
least one embodiment of the invention;
[0128] FIG. 24 is an exploded isometric view of a portion of a
dispensing module, more precisely a cutting mechanism, in
accordance with at least one embodiment of the invention;
[0129] FIG. 25(A) is a side elevation section view of a portion of
a dispensing module in accordance with at least one embodiment of
the invention;
[0130] FIG. 25(B) is a front elevation view of a portion of a
dispensing module in accordance with at least one embodiment of the
invention;
[0131] FIG. 25(C) is a side elevation view of a portion of a
dispensing module in accordance with at least one embodiment of the
invention;
[0132] FIG. 26 is a side elevation section view of a portion of a
dispensing module in accordance with at least one embodiment of the
invention;
[0133] FIG. 27 is a side elevation section view of a portion of a
dispensing module in accordance with at least one embodiment of the
invention;
[0134] FIG. 28(A) is a side elevation view of a portion of a
balancing weight application apparatus in accordance with at least
one embodiment of the invention;
[0135] FIG. 28(B) is a front elevation view of a portion of a
balancing weight application apparatus in accordance with at least
one embodiment of the invention;
[0136] FIG. 29(A) is an elevation view of a portion of an
application module in accordance with at least one embodiment of
the invention;
[0137] FIG. 29(B) is a top plan view of a portion of an application
module in accordance with at least one embodiment of the
invention;
[0138] FIG. 29(C) is front elevation view of a portion of an
application module in accordance with at least one embodiment of
the invention;
[0139] FIG. 29(D) is an isometric view of a portion of an
application module in accordance with at least one embodiment of
the invention;
[0140] FIG. 29(E) is front elevation view of a portion of an
application module in accordance with at least one embodiment of
the invention;
[0141] FIG. 29(F) is a side elevation section view of a portion of
an application module in accordance with at least one embodiment of
the invention;
[0142] FIG. 30(A)(i) is a top plan view illustrating a portion of
an application module;
[0143] FIG. 30(A)(ii) is a side elevation view illustrating a
portion of an application module;
[0144] FIG. 30(B)(i) is a top plan view illustrating a portion of
an application module;
[0145] FIG. 30(B)(ii) is a side elevation view illustrating a
portion of an application module;
[0146] FIG. 30(C)(i) is a top plan view illustrating a portion of
an application module;
[0147] FIG. 30(C)(ii) is a side elevation view illustrating a
portion of an application module;
[0148] FIG. 31(A) is an isometric view of a portion of an
application module in accordance with at least one embodiment of
the invention;
[0149] FIG. 31(B) is an isometric view of a portion of an
application module in accordance with at least one embodiment of
the invention;
[0150] FIG. 31(C) is an isometric view of a portion of an
application module in accordance with at least one embodiment of
the invention;
[0151] FIG. 31(D) is an isometric view of a portion of an
application module in accordance with at least one embodiment of
the invention;
[0152] FIG. 32(A) is an isometric view of a portion of an
application module in accordance with at least one embodiment of
the invention;
[0153] FIG. 32(B) is a side elevation section view of a portion of
an application module in relation with a wheel in accordance with
at least one embodiment of the invention;
[0154] FIG. 32(C) is a top plan view of a portion of an application
module in relation with a wheel in accordance with at least one
embodiment of the invention;
[0155] FIG. 33(A) is a side elevation section view of a portion of
an application module in relation with a wheel in accordance with
at least one embodiment of the invention;
[0156] FIG. 33(B) is a top plan view of a portion of an application
module in relation with a wheel in accordance with at least one
embodiment of the invention;
[0157] FIG. 34(A) is a front elevation view of a conveying module
in accordance with at least one embodiment of the invention;
[0158] FIG. 34(B) is a side elevation view of a conveying module in
accordance with at least one embodiment of the invention;
[0159] FIG. 34(C) is a front elevation view of a conveying module
in accordance with at least one embodiment of the invention;
[0160] FIG. 35 is a side elevation view of a conveying module in
accordance with at least one embodiment of the invention;
[0161] FIG. 36(A) is a schematic side elevation view of a portion
of a conveying module in accordance with at least one embodiment of
the invention;
[0162] FIG. 36(B) is an isometric view of a portion of a conveying
module in accordance with at least one embodiment of the
invention;
[0163] FIG. 36(C) is an isometric view of a portion of a conveying
module in accordance with at least one embodiment of the
invention;
[0164] FIG. 36(D) is an isometric view of a portion of a conveying
module in accordance with at least one embodiment of the
invention;
[0165] FIG. 36(E) is an isometric view of a portion of a conveying
module in accordance with at least one embodiment of the
invention;
[0166] FIG. 37 is a bloc diagram of a computer apparatus in
accordance with at least one embodiment of the invention;
[0167] FIG. 38 is a bloc diagram of a computerized system with
modules and sensors in accordance with at least one embodiment of
the invention;
[0168] FIG. 39 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention;
[0169] FIG. 40 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention;
[0170] FIG. 41 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention;
[0171] FIG. 42 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention;
[0172] FIG. 43 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention;
[0173] FIG. 44 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention;
[0174] FIG. 45 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention;
[0175] FIG. 46 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention;
[0176] FIG. 47 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention;
[0177] FIG. 48 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention; and
[0178] FIG. 49 is a flow chart of steps of a process in accordance
with at least one embodiment of the invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0179] Embodiments of the present invention are described below
with reference to the appended Figures. An exemplary balancing
weight application apparatus 10 is illustrated in FIG. 1. The
balancing weight application apparatus 10 is designed to manage the
procurement of a specific mass of wheel-balancing weights 70 that
come in strips 74 to be secured to a wheel and balance the wheel.
The illustrated embodiment of the balancing weight application
apparatus 10 is separated in a plurality of exemplary modules for
ease of understanding. The first module is a supplying module 20
followed by a feeding module 30, a dispensing module 40, an
application module 50 and a conveying/transport module 60.
[0180] The embodiments illustrated in the Figures and described in
the specification are describing a balancing weight application
apparatus 10 with a possible configuration of a supplying module 20
followed by a feeding module 30, a dispensing module 40 an
application module 50 and a conveying module 60. However, a
balancing weight application apparatus 10 can include a plurality
of supplying modules 20, feeding modules 30 and dispensing modules
40 to provide redundancy and prevents stopping the wheel-balancing
weights assembly line for maintenance or recharging purposes.
Redundancy can also be used to provide weights 70 of different
colors, shapes, finishes or of different masses without departing
from the scope of the present application.
[0181] The supplying module 20 provides a continuous strip 74 of
weights 70 to the balancing weight application apparatus 10. The
strip 74 is generally a juxtaposed series of weights 70 secured to
each other with a tape 76 to continuously supply a desired number
of weights 70 to the balancing weight application apparatus 10.
Each weight 70, generally made of a heavy material like steel, lead
or tungsten, is generally distinct from the other adjacent weights
70 hence allowing some movement therebetween. The exemplified
proportions, length, height and width of a weight 70 are
standardized for ease of packaging and management predictability.
However, the balancing weight application apparatus 10 can manage
weights 70 of different proportions that can be better adapted for
particular applications. The strip 74 allows long productivity
cycles without having to refill the supplying module 20 with an
additional strip 74 of weights 70. Other alternate
weights-supplying configurations that could be used with the
balancing weight application apparatus 10 and remain within the
scope of the present application despite the illustrated
embodiments are limited to some possible configurations for
illustrative purposes.
[0182] The supplying module 20 generally uses a strip 74 of weights
70 that is winded on a spool 78 for compact shipment and easy
manipulation. Each spool 78 of weights 70 can be operatively
installed in the balancing weight application apparatus 10 in a
manner suitable to provide weights 70 to the feeding module 30. The
spool 78 of weights 70 can be secured in a spool support 82 to
further facilitate shipment and manipulation thereof. The spool
support 82 can support the spool 78 and allow controlled unwinding
of the strip 74. In that configuration, the spool support 82 is
equipped with bearing portions (illustrated in FIG. 4) to rotate
the spool 78 and unwind the strip 74 to provide weights 70 to the
balancing weight application apparatus 10. The spool support 82 can
be sized and designed to be movable with a fork lift in an
embodiment thereof.
[0183] A different embodiment of the spool support 82 is
illustrated in FIG. 2. The spool support 82 can cooperate with a
spool actuator 86 operatively connected to the spool support 82, or
to the spool 78 housed in the spool support 82, to actuate and
control the unwinding of the strip 74 stored in the spool 78 when
feeding the balancing weight application apparatus 10. The spool
actuator 86 is preferably disposed along the spool axle 118 to
operatively connect the spool 78 in a compact arrangement. Under
certain circumstances, the spool actuator 86 can reduce rotation
speed or wind the spool 78 when, for example, too much slack is
found in the strip 74 of weights 70. FIG. 2 a) illustrates a first
configuration where a portion of the spool 78 is not operatively
connected to the spool actuator 86. Conversely, FIG. 2 b)
illustrate a second configuration where the spool support 82 is
operatively connected to the spool actuator 86. More details about
the engagement between the spool actuator 86 and the spool support
82 is going to be provided below.
[0184] The embodied spool support 82 includes a frame 90 with a
lower portion 94 adapted to contact the floor and an upper portion
98 generally configured to secure and protect the spool 78 in
addition to allow rotational movements of the spool 78. The lower
portion 94 optionally includes a fork receiver 102 sized and
designed to cooperate with a fork lift for efficient
transportation. The upper portion 98 generally extends vertically
on each lateral side of the spool 78 to maintain the spool 78 in a
vertical position. Optional anchors 106 are provided on an upper
portion 98 of the spool support 82 for further securing and lifting
possibilities. The anchors 106 can also be configured to align
spool supports 82 when staking them. As best seen in FIG. 1, spool
support members 110 are located about a height corresponding to a
radius of the spool 82 to locate bearing elements 114 rotatably
supporting a spool axle 118 for rotating the spool 82 in respect
with the spool support 82 about the spool axle 118. A locking
mechanism 122 is provided to lock the rotation of the spool 78 in
respect with the spool support 82 to prevent any unwinding of the
spool 78. The locking mechanism 122 is embodies as a spring loaded
stem for illustrative purposes.
[0185] A spool actuation portion 126 is connected to the spool 78
and is used in collaboration with the spool actuator 86 for
rotating the spool 78. The spool actuation portion 126 is embodied
in the Figures as a circular member 130 on a side of the spool
support 82 that gets in contact with the spool actuator 86 when the
spool support 82 is located in an operating position in respect
with the spool actuator 86 as it is illustrated in FIG. 2 b). In
the illustrated embodiment, the spool actuation portion 126 is
laterally located in respect with the spool support 82 and axially
aligned with the spool axle 118.
[0186] The spool actuator 86 is located in proper position in
respect with the feeding module 30 such that the strip 74 be
properly aligned with the feeding module 30 for operation. In the
present embodiment, the spool actuator 86 is disposed on a lateral
side of the spool support 82 and is preferably secured to the
ground to remain at the desired location to properly engage with
the spool actuation portion 126 of the spool support 82. Indeed,
the spool actuator 86 includes a mechanism for rotatably actuating
the spool 78 in the spool support 82. The spool actuator 86 could
be used to actuate directly a spool 78 in an embodiment where the
spool 78 can be directly actuated without a spool support 82.
Another embodiment could directly feed the strip 74 of weights 70
to the balancing weight application apparatus 10 however this is
less desirable given the reduced unwinding control of the strip
74.
[0187] The mechanism for actuating the spool 134 is embodied in the
present situation as a pair of rollers 138 adapted to selectively
engage the circular member 130 of the spool support 82. The pair of
rollers 138 is made of a material sufficiently strong to sustain
the mechanical load applied thereon and offer sufficient friction
to rotate the spool 134. For example, a metallic wheel covered with
rubber would be an acceptable choice. A drive portion 138
illustratively including a motor 142 (i.e. servo, AC, DC motor,
variable frequency drive . . . ) operatively connected to a
ratio-altering gearbox 146 and transmission elements 150 are used
to rotatably drive the spool 78 to feed the strip 74 of weights 70
in the balancing weight application apparatus 10. A tensioner 154
applies pressure on a chain 158 (or a belt) between the gearbox 146
and the rollers 138. The motor 142, that can be electric, hydraulic
or otherwise driven, is managed electronically to rotate the spool
78 and provide weights 70 at a desired rate.
[0188] A lifting mechanism 162 is used to change the height of the
rollers 138 to selectively engage the spool actuation portion 126,
in a lifted position 166 illustrated in FIG. 3 a), and to disengage
the spool actuation portion 126, in a lowered position 170
illustrated in FIG. 3 b). Contact between the rollers 138 and the
spool actuation portion 126 has to be sufficient to transmit
rotational movement without slipping and does not necessarily
require to lift the side of the spool 78. The present embodiment
proposes a pivotal motion 174 of a main member 178 of a spool
actuator frame 182 about a pivot 184 between the lifted position
166 and the lowered position 170. An actuator 188 is operatively
secured between a distal end 186 of the main member 178 and a fixed
portion 190 of the spool actuator frame 182. Sensor A detects the
remaining quantity of strip 74 in a spool 78 with, for instance,
detecting a presence of strip 74 through the axially proximal
opening 214. Other configuration of parts could alternatively lead
to such determination without departing from the scope of the
description.
[0189] Different configurations of spools 78 are encompassed by the
present application. A single spool 78 can be used in the supplying
module 20. A plurality of spools 78 can alternatively be used in
the supplying module 20. Some possible embodiments are discussed in
greater details below without disclaimer of other non-illustrated
embodiments. For example, spools 78 including a strip 74 of weights
70 of about 9 kg (about 20 pounds) can be used for easy
replacement. Spools 78 including a strip 74 of weights 70 of about
90 kg (about 200 pounds) can be used for long continuous operation
and spools 78 including a strip 74 of weights 70 of about 225 kg
(about 500 pounds) can be used for extended operation.
Alternatively, large spools 78 can accommodate a strip 74 of
weights 70 of up to 900 kg (about 2000 pounds) can be used for
extended operating periods. Referring now to FIG. 4, illustrating a
plurality of adjacent spools 78, one can appreciate that thin
spools 78 can be used in combination. A thin spool 78 has a width
of a weight 70 and hence houses a strip 74 where weights 70 are
superposed on top of each other with each turn of the spool 78. The
embodiment shown in FIG. 4 has eight (8) adjacent spools 78
separated with a spool wall 194 therebetween. In other words, it
could equally be described as a single spool 78 with a plurality of
strip-receiving slots 198 separated by slot-separating walls 202. A
plurality of adjacent spools 78 can provide weights 70 of different
masses and/or different colors to match the color of the wheel to
balance. For instance, black weights 70 can be use to correct the
balance of black wheels and grey weights 70 can be use to correct
the balance of grey wheels to reduce the visual impact of the
weights 70 applied on the wheel 748.
[0190] Lateral slot-separating walls 206 include reinforcing ribs
210. An axially proximal opening 214 is used to secure a first end
of a strip 74 in the strip-receiving slot 198 to hold in place an
end of the strip 74 and begin winding the strip 74 on the spool 78.
Axially distal openings 218 are disposed on the periphery of the
slot-separating walls 202 (or on the lateral walls of a single
spool 78) to lock a second end of the strip 74 on the spool 78 to
prevent undesired unwinding of the strip 74 when the spool 78 is
full. A securing clip 222 illustrated in FIG. 5 can be used as an
example of a workable locking mechanism that can be installed on
the spool 78 via the axially distal openings 218 to prevent
undesired unwinding of the strip 74. The securing clip 222 has a
bottom portion 226 slipped under a previous layer of strip 74.1
joined with a top portion 230, that is optionally shaped with the
profile of a weight 70, to hold the superposed layer of strip 74.2
to the previous layer of strip 74.1 hence preventing undesirable
unwinding of the strip 74 from the spool 78. A handle 234 is
provided on the clip 222 for easy removal of the securing clip
222.
[0191] Each spool 78 can be associated with a unique
identification. Embedded RFID in each spool 78, bar code on the
spool 78, unique identification number, or other identification
means can be used for identifying each spool 78 and the products
thereon. This allows of product acceptance and compliance with the
apparatus 10 requirements. Compliance of spools 78 can be made
automatically or require an associated key code to be received by
the apparatus 10. The spool is uniquely identified and the number
of weights 70 thereon is known thus allowing traceability of the
weights 70. For example, spool #2016A200 includes 200 kilograms of
weights 70, each weights 70 having 100 grams with known size,
width, length and thickness. In the present illustrative example,
it is known two thousand (2000) weights 70 are housed on the spool
70. Each wheel 748 is also uniquely identified on the installation
line. For instance, weights #242 to #249 of spool #2016A200 are
known to be installed on wheel #762898. Additionally, the
application pressure used by the robot 636 to secure the weights 70
on the wheel 748 is also known and recorded for complete product
traceability. The application pressure of specific weights 70 on a
particular wheel 748 can be identified should the weights 70 later
reveal not to be secured strongly enough to the wheel 748 and
pressure adjustment can be made.
[0192] FIG. 6 illustrates an embodiment of a spools manager
assembly 240. The exemplified spool manager assembly 240 includes a
frame 244 forming a structure adapted to house one of a plurality
of spools 78 in a spools receptacle 242. The exemplified spools
manager assembly 240 is including a spool-supporting axle 248
adapted to receive thereon and support a plurality of individual
spools 78. Each spool 78 in the illustrated configuration is
containing, for example, a strip 74 of weights 70 of about 9 kg
(about 20 pounds) each. As mentioned above, each individual spool
78 can accommodate weights 70 of different configurations, sizes,
finishes, colors or masses to provide a plurality of different
weights 70. The spools manager assembly 240 of the illustrated
embodiment includes a spool-supporting shaft 248 secured to the
frame 244, in cantilever in the illustrated embodiment, thus
allowing axial insertion and removal of spools 78. The illustrated
spools manager assembly 240 can accommodate ten (10) spools 78
although a different number of spools 78 could be used. The spools
78 stored in the spools receptacle 242 are rotatably restricted
about the spool axle 118 by one or a plurality of spool angular
locating members 250 axially projecting from the side holding the
spool-supporting axle 248. The spool angular locating members 250
are engaging openings 274 in each spool 78 to prevent undesired
rotation of the spools 78. Indeed, the spools 78 could have a
tendency to unwind given the significant mass of the strip 74 of
weights 70 enclosed therein. The openings 274 pattern is designed
such that the spools 78 are all located in a single possible
angular position to ensure the end of the strip 74 is going to be
located at the same position for each of the spools 78. The spool
angular locating members 250 have preferably an axial length
similar to the length of the spool-supporting shaft 248 to axially
push all the spools 78 on the spool-supporting shaft 248.
[0193] The spool manager assembly 240 further includes a push
member 254 adapted to axially move to axially push the spools 78
out of the spool-supporting shaft 248. Axial movement of the push
member 254 in the illustrated configuration is actuated by a servo
motor 256 (other alternative means for knowing the angular and/or
linear position of the push member 254 are contemplated in the
present application) operatively connected to the push member 254
with a pair of pulleys 260 and a belt 264 tensed with an optional
tensioner 268. The servo motor 256 can selectively move the push
member 254 in both axial directions and is configured to move by
increments of one or more spool 78 thickness. The embodied
mechanism axially moves the push member 254 without rotating it
about the spool-supporting shaft 248.
[0194] The spools receptacle 242 of the spools manager assembly 240
is used in cooperation with a spool unwinder 270. The spool
unwinder 270 receives a spool 78 from the spools receptacle 242, as
it can be appreciated in FIG. 7, when in the spool loading position
232. The spool unwinder 270 then moves to a feeding position 234
and moves to an unloading position 236 when the spool 78 is empty
of strip 74 to unload the empty spool 78 can simply fall in an
empty spool receptacle (not illustrated). The push member 254 is
used in cooperation with the spool unwinder 270 to push a spool 78
toward the spool unwinder 270 that is axially securing the spool
hence mounted thereon for feeding the strip 74 of weights 70 in the
balancing weight application apparatus 10. The spool 78 to be
unwind and fed to the balancing weight application apparatus 10 is
axially located at the feeding position 234 and the spool unwinder
270 rotates to let fall the end of the strip 74 on a strip receiver
392, installed in a strip-reception position 394, to route the
strip 74 toward their installation on wheels. One can appreciate
the spool unwinder 270 is rotatably actuated by a servo motor 256
in both directions at a desired speed to engage the strip 74 of
weights 70 in the apparatus 10.
[0195] The supplying module 20 illustrated in FIG. 7 and FIG. 8 is
embodied with a plurality of spools manager assemblies 240.1 and
240.2. This provides a choice of weights 70 having different
characteristics to be fed in the apparatus 10. For instance, a
first spools manager assembly 240.1 could provide grey colored
weights 70 to match grey colored or greyish wheels 748 and
alternatively provide with the second spools manager assembly 240.2
weights 70 having different characteristic, like black colored
weights 70 to match black or dark wheels 748 as identified by the
sensors listed below. Referring to FIG. 7, the spools manager
assembly 240.1 and its counterpart spool unwinder 270.1 are in the
loading position 232 where a spool 78 is mounted on the unwinder
270.1. As best seen in FIG. 7 b), the spool unwinder 270.1 is
slightly moved away from the spools manager assembly 240.1 toward
the feeding position illustrated with the position of the lower
unwinder 270.2. Axial movements of the unwinders 270 are generated
by a motor (not shown in the Figures) managed accordingly.
[0196] The spools manager assemblies 240 are independently slidably
mounted on guide rails 266 and actuated by actuators 262 to be
displaced in a spools-loading configuration 258 as depicted in FIG.
8 b). It is possible in the spools-loading configuration 258 to add
new spools 78 containing strips of weights 70 in the spool manager
assembly 240 because the spool manager assembly 240 is not axially
covered by its corresponding unwinder 270. The installation of new
spools 78 can be automated or be made manually by an operator. It
is noted the rails 266 are illustrated without supporting
structures for the benefit of the reader but are secured to a frame
or walls to ensure proper mechanical strength in real life
operation. The spool unwinder 270 can be used with or without the
feeding module 30. The spool unwinder 270 would replace the feeding
module 30 and unwinds the strip 74 of weights 70 at a desired rate
and the strip would be pulled by an engaging toothed drive wheel
412 located downstream.
[0197] The spools 78 used in the previous embodiment are adapted to
house a single strip 78 of weights 70 superposed at each turn on
the spool 78. A mandrel 272, illustrated with an empty spool 78 in
FIG. 9 and illustrated with a spool 78 full of strip 74 therein in
FIG. 10, is used between the spool 78 and the spool-supporting
shaft 248 to prevent free rotation of the spool 78 about the
spool-supporting shaft 248. The mandrel 272 is installed on the
spool-supporting shaft 248 with a mechanism preventing rotation of
the mandrel 272 in respect with the spool-supporting shaft 248
with, for instance, a key lock in the spool-supporting shaft 248 or
engaging the holes 276 of the spool 78.
[0198] Another possible embodiment of the supplying module 20 is
illustrated in FIG. 11. A wide spool-management module 280 with an
associated feeding module 30 is represented in FIG. 11. The wide
spool-management module 280 includes a frame 284 forming a
structure supporting a wide spool 290 adapted to receive thereon a
single wide spool 290 containing, for example, a strip 74 of
weights 70 of about 225 kg (about 500 pounds) for extended period
of operation without having to recharge or replace the spool 290.
The wide spool 290, in the exemplified embodiment, is directly
supported by a set of supporting wheels 294 contacting the lateral
edges 298 of the wide spool 290. Two of the supporting wheels 298
are free to rotate 302 and the other two supporting wheels 298 are
actuated supporting wheels 306 actuated by a motor 310 that is
operatively connected to the actuated supporting wheels 306 via a
pair of pulleys 314 and a belt 318. The wide spool 284 is secured
in place with a tensioner 322 that is also optionally an encoder
326 adapted to provide a signal representing the rotation of the
wide spool 294.
[0199] The feeding module 30 can be separated or connected with the
supplying module 20 without departing from the scope of the
invention. The feeding module 30 is associated with the supplying
module 20 in the present embodiment because, inter alia, the wide
spool 290 has a long winded strip 74 thereon that is winded over
the entire axial width of the wide spool 290. This causes a lateral
offset 330 of the strip 74 about the center line 334 of the wide
spool 290 when unwinding or winding the strip 74. The lateral
offset of the strip 74 is causing a challenging twist in the
juxtaposed suite of solid weights 70 that can cause weights 70 to
disconnect from the strip 74 or break the strip 74. One way to
reduce this effect is to manage a first loop 378 reducing the
stress in the strip 74 and/or aligning the feeding module 30 with
the axial position of the strip 74 on the spool 290. The feeding
module 30 illustrated in FIGS. 11-14 includes a carriage 338
configured to be aligned with the axial position of the strip 74 on
the wide spool 290. The feeding module 30 includes a lateral
actuator 342 actuating a threaded rod 346 to move the carriage 338
on rails 350. The carriage 338 is equipped with an intake pulley
354 receiving the strip 74 of weights 70 from the wide spool 290.
The strip 74 then moves over a supporting floor 358 to reach a pair
of superposed pulleys 362. One of the superposed pulley 362 is an
actuated pulley 366 driven by a servo motor 370, or any other mean
for achieving the task, and can optionally be toothed to engage the
weights 70 and prevent slipping along the strip 74. Accurate
contact with the weights 70 is ensured by a contacting pulley 374
opposed to the actuated pulley 366.
[0200] A number of sensors are used to manage feeding of the strip
74 from the spool 290 with the feeding module 30. The sensors are
going to be identified with capital letters in the description as
listed below in Table 1. The list of sensors that can be used in
the balancing weight application apparatus 10 follows.
TABLE-US-00001 TABLE 1 Sensors description Location Sensor type A
Weights strip thickness on spool (remaining quantity) Supplying
module Laser B Weights strip first loop accumulation (radial for
tension Feeding module Proximity in strip) (photocell) C Weights
strip first loop accumulation (right lateral for Feeding module
Proximity strip alignment) (metal detection) D Weights strip first
loop accumulation (left lateral for strip Feeding module Proximity
alignment) (metal detection) E Weights strip presence before
feeding module toothed Feeding module Proximity wheel (optic fiber)
F Weights strip presence after feeding module toothed Feeding
module Proximity wheel (optic fiber) G Weights strip second loop
accumulation Feeding module Laser H Weights strip presence
applicator module entry (before Dispensing module Proximity toothed
wheel in embodiment 1 and before lifting floor in (optic fiber)
embodiment 2) I Weights strip junction tape presence; strip joint
Dispensing module Contrast identification (before toothed wheel in
embodiment 1 and before lifting floor in embodiment 2; but just
before peeler to lower peeler at joint) J Weights strip protection
tape presence (protective tape Dispensing module Contrast removal
confirmation after peeler) K Weights localization (in-between
weights aligned with Dispensing module Proximity cutter) (optic
fiber) L Weights localization in application module in position for
Dispensing module Proximity hand (optic fiber) M Applicator hand
location about wheel Application module Laser 3x N Axial sensor on
tool Application module Proximity O Wheel profile Conveying module
Laser P Wheel size, color and dot localization Conveying module
Camera Q Wheel presence on conveyor module (end of line) Conveying
module Proximity (photocell) R Weight presence sensor on tool
Application module Laser
[0201] So, proximity sensor B is used to detect the proximity of
the strip 74 at the first loop 378, after the spool 290 and before
the intake pulley 354 of the feeding module 30. The speed at which
the spool 290 is actuated to unwind the strip 74 can me modified
with the management of the motor 310 to keep the first loop 378
within a desired range. If the range of the first loop 378 is
getting too small, the unwinding of the strip 74 is going to
accelerate and, conversely, if the range of the first loop 378 is
getting too large the unwinding of the strip 74 is going to
decelerate. Two proximity sensors C, D are detecting the lateral
proximity of the strip 74 thereof to manage and adjust the lateral
location of the carriage 338 accordingly. If the strip 74 moves
closer to lateral sensor C, the carriage is going to move in the
direction of lateral sensor C to re-align the position of the strip
74 between the two lateral sensors C, D. In contrast, if the strip
74 moves closer to lateral sensor D, the carriage is going to move
in the direction of lateral sensor D to re-align the position of
the strip 74 between the two lateral sensors C, D. Another sensor E
is detecting the strip 74 presence before the feeding module 30
superposed pulleys 362. Sensor F is detecting the strip 74 presence
after the feeding module 30 superposed pulleys 362. Lateral
movements of the carriage 338 in both lateral directions are
illustrated in FIG. 12 and FIG. 13. One can appreciate from FIG. 14
an isometric view of isolated feeding module 30 supported by its
frame 382.
[0202] Sensor G is detecting the proximity of the strip's 74 second
loop 386 to adjust the range of the second loop 386 within a
desired range. The loops 378, 386 are wanted to reduce the effect
of possible supplying rate variation of the strip 74 to the rest of
the balancing weight application apparatus 10. For example, if the
supplying rate is too slow or too fast, the first loop 378 is going
to damp the rate variation. Another example is during a spool 78
replacement. The additional strip 74 in the first loop 378 and the
second loop 386 can be used when the new spool 78 is installed. The
additional strip 74 in the first loop 378 and the second loop 386
can be adjusted to prevent the balancing weight application
apparatus 10 to stop and maintain a continuous functioning when
replacing empty spools 78 with new spools 78 full of weights 70. A
removable bridge 390 can optionally be installed between the
feeding module 30 and the dispensing module 40 to ease the
connection between the end of a strip 74 and the beginning of a new
strip 74.
[0203] An exemplary drive mechanism 400 for the dispensing module
40 is embodied in FIG. 15. The drive mechanism 400 is used in this
embodiment to move the strip 74 of weights 70 toward the
application module 50. The drive mechanism 400 is driven by, inter
alia, a servo motor 404 operatively rotating circular drive portion
408. The circular drive portion 408 of the illustrated embodiment
is a toothed drive wheel 412 where each tooth is sized to engage a
weight 70. The toothed wheel 412 includes an array of radial
protrusions 416 configured to engage intervening sides of the
weights 70 to drive the strip 74 without slippage. The illustrated
embodiment depicts a toothed drive wheel 412 including an optional
radial void portion 416, that is a space made to fit a strip
supporting member engaging in the radial void portion 416 to
provide a continuous vertical support to the strip 74 along the
strip 74 displacement and transfer to or from the wheel 748. The
radial void portion 416 is allowing toothed drive wheel 412 lateral
contacts with the weights 70 while being supported all along. The
opposite configuration can also be used and the toothed drive wheel
412 can alternatively include a pair of radial void portions on
axial each side thereof. The strip 74 is driven on a supporting
rail 420 and is laterally guided by removable side rails 424.
Optionally, the side rails 424 include upper rails 426 ensuring the
strip 74 of weights 70 is not going to lift and disengage from the
toothed drive wheel 412. The side rail 424 is removably secured
with some fasteners 420. The toothed drive wheel 412 is generally
located below the rail 424 and partially extends through the rail
424 to engage the weights 70. The motor 404 is a servo motor that
can be selectively actuated to move the strip 74 of a desired
length/mass to dispense a desire number of weights 70 to be applied
on a wheel. The motor 404 is interconnected with a gearbox 428 that
can modify the ratio of the motor 404, if desired. The gearbox 428
also change the direction of the drive axis 432 of the motor 404 of
90 degrees in accordance with the mechanical requirements of the
illustrated embodiment.
[0204] In contrast, FIG. 17 illustrates a rail 420 of the
dispensing module 40 that is not used in conjunction with a servo
motor 404 and a drive wheel 412 in a motor-less embodiment of the
invention. Instead, the embodiment depicted in FIG. 17 is using the
robot tool 640 of the application module 50 to pull drive the strip
74 instead of a drive wheel 412 as previously described. In this
configuration, the robot 636 of the application module 50 is going
to pull and/or push the strip 74 of weights 70 along the rail 420
in consequence of the instructions to do so provided by the control
module 1066.
[0205] The strip 74 of weights 70 includes a tape 76 covered with a
protective liner 436 preventing a sticky portion 456 of the tape 76
to undesirably stick to other objects or get dirty and eventually
not stick properly to the wheel. The protective liner 436 must be
removed before securing the weights 70 to the wheel. A liner peeler
440 is part of an embodiment of the dispensing module 50 to remove
the liner 436, as depicted in FIG. 17, showing the motor-less
embodiment described above. The peeler 440 is operatively located
near the end of the rail 420 to peel the liner 436 before the
weight 70, or the series of weights 70, is taken by the application
module 50 to be secured to the wheel. As illustrated in the
embodiment, the peeler 440 has a hook-shaped configuration that
includes a liner-contacting portion 444 moving between a low
liner-engaging position 448 and a high liner-removing position 452.
The liner-engaging position 448 locates liner-contacting portion
444 low on the tape 76 to rub the tape 76 and remove the liner 436
from the tape 76. The liner-contacting portion 444 of the peeler
440 can even interfere with the thickness of the tape 76, in the
sticky portion 456 of the tape 76, lower than the thickness of the
liner 436 of about between 0 mm and 1 mm as illustrated in FIG. 17
d), to engage the beginning of the liner 436. Once the liner 436 is
engaged the liner-engaging portion 448 of the peeler 440 can be
raised to the liner-removing position 452, as illustrated in FIG.
17 e), slightly above the tape 76 of about between 0 mm and 4 mm,
to prevent touching the tape 76. A liner-guiding edge 454 disposed
slightly above the tape 76 is used in cooperation with the peeler
436 to direct the liner 436 in a different direction than the
weights 70. The removed liner 436 can optionally be ejected in a
liner guide 460 to help prevent undesirable mix up of the tape 76
in the mechanism. Movement of the peeler 436 between the
liner-engaging position 448 and the liner-removing position 452 is
managed by a peeler actuator 464 to perform a fraction of a turn
about a peeler axis 468 to reach the two positions 448, 452. The
peeler actuator 464 can be embodied as a pneumatic cylinder with a
limited stroke or another actuator adapted to perform the desired
movement. An optional strip-locking mechanism 472 is depicted in
FIG. 17 c). The strip-locking mechanism 472 selectively locks the
strip 74 in the rail 420 when no movement of the strip 74 is
desirable. Strip 74 presence sensor H is preceding the peeler 436
to detect the strip 74 presence. Weights strip junction tape
presence sensor I is located just before the peeler 440 to actuate
the peeler 440 when a liner 436 discontinuity is detected so that
the peeler 440 can be lowered and be placed in the liner-engaging
position 448.
[0206] An alternate embodiment for removing the liner 436 from the
strip 74 is illustrated in FIG. 18. The tape 76 can be manufactures
with some additional properties. For instance, the liner 436
protecting the tape 76 can react to heat and detach from the sticky
portion 456 of the tape 76. A heat gun 480 blows hot air through a
directing nozzle 484 to heat the tape 76 and detach the liner 436
to engage the tape 76 with the peeler 440. The hot air from the
nozzle 484 is directed to the region of the peeler 440 to locally
heat the tape 76 for a predetermined duration to avoid overheating
the tape 76. The heat gun 480 can be selectively actuated when a
new strip 74 of weights 70 is feed in the balancing weight
application apparatus 10, when the strip junction tape presence
sensor I senses a discontinuity in the tape 76, to put the peeler
440 in the liner-engaging position 448 to engage the forward end of
the liner 436 with the peeler 440. The actuation mechanism managing
the displacement of the strip 74 in the dispensing module can move
back the strip 74 when a junction tape or a liner 436 is sensed by
presence sensor I by moving back the strip 74 and attempt to
re-engage the liner 436 with the peeler 440 with a following
forward movement of the strip 74.
[0207] It is also possible to appreciate from FIG. 18 and FIG. 19
the dispensing module 50 is optionally equipped with a
liner-cutting mechanism 490 including an actuator 494 actuating a
scissor portion 498 following the liner guide 460 (not illustrated
in FIG. 18). The liner 436 can hence be cut to a predetermined
length in order to more easily manage the removed liner 436.
[0208] Additionally, from FIG. 18 throughout FIG. 24, a
strip-cutting mechanism 502 is shown. The strip-cutting mechanism
502 is used to cut portions of the strip 74 to provide a
predetermined number of weights 70 equivalent to the required mass
for balancing the wheel. The strip-cutting mechanism 502 is located
near the end of the rail 420 of the dispensing module 50 to cut the
strip 74 between two adjacent weights 70. It is undesirable the
strip-cutting mechanism 502 tries to cut the strip 74 in the middle
of a weight 70. Therefore, an additional sensor K located near the
end of the rail 420 is use to detect the presence of a weight 70.
Sensor K is preferably installed orthogonal with the strip 74 and
is disposed at a location where it can detect a weight 70 or an
empty space between two adjacent weights 70. When properly
adjusted, sensor K must not detect a presence of a weight 70 along
its first sensing line 526 aligned with the strip-cutting mechanism
502 to make sure there is no weights 70 along the line of cut for
the strip-cutting mechanism 502 to be actuated. Sensor K has an
optional second sensing line 530 located less than a length of a
weight 70 further to detect a presence of a weight 70 when none is
supposed to be present. It can be appreciated from FIG. 20 a) the
side rails 426 includes an opening to let the first sensing line
526 pass through and gets to the strip 74 to identify the position
of the weights 70. One of the side rail 424 is removably secured in
its operating position with a rail clamp 534. The side rail 424 can
be moved along a guiding rail 538 equipped with a stopper to ease
manipulation of the strip 74 on the rail 420 when required.
[0209] The strip-cutting mechanism 502 includes a housing 506
supporting a cutting member 510 in a position perpendicular to the
strip 74. The cutting member 510, embodied as a circular blade 514
is reciprocally moved by an actuator 518 along supporting rails 522
as best seen in FIG. 21. The construction of the strip-locking
mechanism 472 is depicted in FIG. 21 with more internal details. As
it can be appreciated, the strip-locking mechanism 472 includes a
weight-engaging portion 546 with, preferably, a cooperating surface
550 matching the shape of a weight 70 with protruding portions 552
engaging between the weights 70 to lock the weight 70 in the rail
420. This prevents any longitudinal movement of the strip 74 along
the rail when the strip-cutting mechanism 472 is actuated. The
weight-engaging portion 546 is movable between a weight-engaging
position 554, illustrated in FIG. 19 a), and a released position
558 illustrated in FIG. 21 b). A pneumatic cylinder 562 is included
in the embodiment to actuate the weight-engaging portion 546 when
the desired quantity of weights 70 is provided by the dispensing
module 50.
[0210] Sensor J is illustrated in FIG. 22. The purpose of sensor J
is to use the reflectivity, the color or the contrast of the strip
74 to control if the liner 436 has been removed from the strip 74
passed the blade 514. The liner 436 has a distinct reflectivity,
color or contrast than the sticky portion 456 and sensor J is a way
to verify the liner 436 is removed.
[0211] Moving now to FIG. 23 and FIG. 24 depicting in greater
details the strip-cutting mechanism 502 as embodied for
illustrating purposes. The cutting member 510 is exemplified as a
circular blade 514 supported by a blade housing 566 manufactured
with two housing housing halves 570, 574. Housing halve 570 is
removably secured in place with a locking mechanism 578 giving
access to the blade 514. The blade 514 of the illustrated
embodiment is toothless, non-motorized and is rotating when
contacting the strip 74 by the linear motion of the housing 566.
The combined effect of the linear motion of the housing and the
contact between the blade 514 and the strip 74 creates a rotation
of the blade 514 that is sufficient to cut the tape 76 holding the
weights 70 together. The blade 514 is supported by an arrangement
of axle 582 and bearings 586. A one-way bearing is optionally used
to make the blade 514 rotate always in a single direction instead
of having a reciprocal movement thereof. The single direction
rotation of the blade 514 makes the entire circumference of the
blade 514 be used for cutting the strip 74 and also ensures the
blade 514 wears out equally all around and prolong blade
replacement cycles. The housing 566 also includes an opening 590 to
a lubricant reservoir 594 interacting with the blade 514 to
lubricate the blade 514 and ease cutting of the strip 74. The
lubricant, oil or other proper lubricant, can be soaked in a sponge
598 material to prevent any leaking.
[0212] FIG. 25 illustrates an alternative embodiment of the
dispensing module 40 using two dispensers 852.1 and 852.2, each
provided with its own liner-removing mechanism 856. The peeler 440
remains pivotally connected as previously discussed in respect with
FIG. 17. Once the liner 436 is removed from the strip 74 it is
routed in an arcuate channel 860 to an automatic shredder 864 to be
cut in small liner portions vacuumed through pipes 868 to a vacuum
generator 872 and extracted from the process with the air flow
thereof. The strip 74 is cut with a knife mechanism 876 actuating
an angled straight or curved blade 884 that moves downward to cut
the strip 74. Prior to cutting the strip 74, a strip stopper 888
using an actuator 892 and a break member 896 pivotally connected to
the frame. The break member 896 is hence actuated between a relaxed
position and a break position momentarily squeezing the strip 74 in
the upper direction, between the rails 424 just a little before the
angled blade 884 of the knife mechanism 876, when the strip 74 is
cut. This allows for stopping a strip 74 of weights 70 when it
remains only a few weights 70 in the strip 74 since the break
member 896 engages the last weight 70 before the blade 884. The two
dispensers 852.1 and 852.2 are disposed in parallel and are adapted
to provide redundancy for maintenance purposes. The two dispensers
852.1 and 852.2 are also used to dispense weights 70 of different
configurations to offer a choice decided in function of the wheel
748 to be balanced. For instance, black weights 70 can be dispensed
with dispenser 852.1 and be used for balancing black and dark
colored wheels 748. In contrast, dispensers 852.2 is providing gray
weights 70 that are selected for aluminum or light colored wheels
748. Other uses of two or more dispensers 852 are contemplated in
the present application and could be used for other benefits while
remaining within the scope of the present application. It is also
possible to appreciate each of the two dispensers 852.1 and 852.2
are provided with their own sensor J, respectively disposed to
extend their sensing at an angle from vertical and in opposed
directions, mostly for reasons of maximizing the sensors caption
capability given the reflection properties of the liner and the
other portions of the strip 74. Optimal sensing angle appears to be
about between 30 degrees and 40 degrees.
[0213] Another embodiment is illustrated in FIG. 26 and FIG. 27.
Actually, the dispensing module 50 can be utilized without the
application module 60 (seen in FIG. 1) when embodied differently.
In that respect, the dispensing module 50 can be alternatively
equipped with a weights-receiver 602 collecting the cut portions of
strips 74 for their manual installation by a worker. The worker is
hence able to take the cut portions of strips 74 by hand on a
weight-receiver ramp 606. The height and the angle of the
weight-receiver ramp 606 is adjustable with an adjustment mechanism
610 to offer a plurality of ergonomic positions between a low
position 614 illustrated in FIG. 26 and a high position 618
illustrated in FIG. 27. The weight-receiver ramp 606 ends with a
stopper 614 to prevent weights 70 to fall off the weight-receiver
ramp 606. Sensor L can be located after the peeler 440 and the
blade 884 to acknowledge if a weight 70 is ready to be collected by
the tool 640 of the robot 636 (not illustrated). Alternatively,
sensor L can be located on the weight-receiver ramp 606 for
confirming manual pickup of the weight(s) 70.
[0214] The application module 60 is automated with an industrial
robot 636 well seen in the embodiment illustrated in FIG. 28. The
robot 636 is equipped with a weights application tool 640 designed
to move one or a series of weights 70 to from the dispensing module
40 to the wheel to balance. A possible embodiment of the tool 640
is illustrated with additional details in FIG. 29. The tool 640
includes at least one weights-holder 644 including a series of
juxtaposed weights-receivers 648. Each weights-receiver 648 is
preferably bordered with ridges 652 for individually locating each
weight 70 on the weights-holder 644. The weights-holder 644 has a
semi-circular shape 656 sized and designed to fit inside the wheel
and secure the weights 70 to the surface of the wheel. Preferably,
for ease of moving and applying weights 70 inside the wheel, the
outside diameter of the tool 640 and weights-holder 644 assembly
should be smaller than the internal diameter of the wheel. The
weights-holder 644 can be manufactured as a single part with the
tool hub portion 660 or be manufactured in separate parts. The tool
hub portion 660 is embodied with a series of radially extending
portions 664. The weights-holder 644 may include a central recessed
portion 668 designed to cooperate with a weights support 672 (best
seen in FIG. 20 a). when the tool 640 receives the weights 70 from
the dispensing module 50. Once the dispensing module 50 has cut the
desired strip 74 length, the cut portion of the strip 74 of weights
70 remains supported by their central region by the weights support
672 while the weights-holder 644 moves under the weights support
672 and lift toward the weights 70 to engage and move the weights
70. The central recessed portion 668 of the weights-holder 644 is
using the thickness of the tool hub portion 660 that secures two
distinct weights-holder portions 676 in the illustrated
embodiment.
[0215] The tool hub portion 660 is also configured to secure
thereon a first weights-holder 644.1 and a second weights-holder
644.2. The second weights-holder 644.2 can be desirable to reduce
the moving time of the robot 636 between the dispensing module 50
and the wheel. Indeed, the second weights-holder 644.2 can be
charged with a second set of weights 70 and allow the weights
application tool 640 to secure two sets of weights 70 to the wheel
with a single movement between the dispensing module 40 and the
wheel. For example, a dynamic balancing of the wheel generally
locating weights 70 at different axial distances in the wheel can
be achieved with a single movement of the tool 640 between the
dispensing module 50 and the wheel. In an embodiment, the
weights-holders 644 can be axially offset 680 in respect with the
tool hub portion 660. The offset weights-holders 644 allows for a
more precise location of the weights 70, reduction of the robot 636
travel distance and allows securing weights 70 axially closer to
the center hub of the wheel. For example, the second weights-holder
644.2 is completely offset on one side of the tool hub portion 660
while the first weights-holder 644.1 is centered with the tool hub
portion 660. Other configurations, the use of spacers, different
angular positions of the weights-holders 644 and other adjustments
thereof remain within the scope of the present application.
[0216] As best seen in FIG. 21, FIG. 29 and FIG. 30, each
weights-holder 644 has a trailing side 684 and a leading side 688.
The robot 636 can use the tool 640 in each rotatable direction in
reference with the leading side 688 and the trailing side 684 of
the weights-holder 644 to collect the weights 70 thereon. A first
configuration uses the leading side 688 portion of the
weights-holder 644 to receive the weights 70 thereon. The required
magnets-receiving portions 704 on the leading side 688 are hence
filled with weights 70. This configuration is illustrated in FIG.
19. Conversely, a second configuration uses the trailing side 684
of the weights-holder 644 to receive the weights 70 thereon. This
configuration is illustrated in FIG. 21. Using the trailing edge of
the weights-holder 644 to receive the weights 70 promotes an
additional use of the weights-holder 644.
[0217] In the second configuration, the trailing side 684 is the
edge that is moved next to the dispensing module 50 when the
weights-holder 644 is receiving the weights 70 from the dispensing
module 50. The leading side 688 is the edge that is located further
from the dispensing module 50 when the weights-holder 644 is
receiving the weights 70 from the dispensing module 50. Put
differently, the tool 640 is configured to fill the
weights-receivers 648 starting toward the leading side 688, in
consideration of the number of weights 70 to be secured on the
tool, progressively toward the trailing side 684 to fill the last
weights-holder 644 toward the trailing side 684. All the last
weights-receivers 648 are hence filled with weights 70.
[0218] A magnified illustration of a weights-holder portion 676 is
shown in FIG. 29. The weights-holder portion 676 has a
semi-circular shape about a radius 692 with its exterior
circumference 696 ideally smaller than the diameter of the interior
of a wheel to fit into the wheel and secure the portion of strip 74
to the proximal surface of the wheel. The weights-holder portion
676 are preferably made of non-ferromagnetic material, like
aluminum, plastic or stainless steel, to allow magnetic means to
hold the weights 70 thereon. The weights-holder portion 676 uses a
series of magnets 700 housed in magnet-receiving portions 704
disposed in the weights-holder portion 676 along its exterior
circumference 696. The magnets 700 are press-fitted or glued in
their respective magnet-receiving portions 704. A radial opening
708 is giving access behind each magnet 700 to insert a pin tool
724 to push on the magnet 700 through the radial opening 708 and
push on the magnet 700 to remove the magnet 700 from its
magnet-receiving portion 704. One can appreciate that the trailing
side 684 includes a larger and stronger magnet 712 housed in a
larger magnet-receiving portion 716. The larger magnet 712 is
helpful to sufficiently secure a single weight 70 to the
weights-holder portion 676 when a single weight 70 is required. The
larger magnet 712 is also material in cutting the strip 74 by
tearing the strip 74 between adjacent weights 70 as illustrated in
FIG. 30.
[0219] It can be more clearly appreciated from the embodiments
illustrated in FIG. 29 that the weights-holders 644 are equipped
with a pair of optional 70 lateral weight holders 736. The pair of
weight 70 lateral holders 736 are disposed on each side of the
weights-holders 644 bordering the last weight-holder portion 676.1
to further retain the weight 70 located in the last weight-holder
portion 676.1. This is desirable to ensure the weight 70 in the
last weight-holder portion 676.1 is firmly maintained in place and
is not going to twist in or unsecure from the weights-holder 644.
This is particularly useful when a single weight 70 is held by the
weights-holder 644 and is not helped by adjacent weight 70 to
remain in place in respective weight-holder portions 676. The risk
of twisting or unsecuring a weight 70 in the last weight-holder
portion 676.1 is increased when the tool 640 is used to detach a
weight 70 or a series of weights 70 from the strip 74 of weights
70. The use of the tool 640 to split the tape 76 holding the
weights 70 in strip 74 is an alternate embodiment illustrated in
FIG. 30. A pivotal motion of the tool 640 is illustrated in FIG. 30
to cut the tape 76. FIG. 30 a) depicts the tool 640 with the
weights-holder 644 securing a single weight 70 thereon on the last
weight-holder portion 676.1 with the weights-holder 644
longitudinally aligned with the strip 74. FIG. 30 b) illustrate a
pivotal motion 740 of the weights-holder 644 to increase tension in
one lateral side of the tape 76 and breakup the tape 76 to separate
the weight 70 secured in the weights-holder 644. The lateral
holders 736 are further maintaining the weight 70 in place when the
weights-holder 644 enable the pivotal motion 740 to prevent the
weight 70 to pivot and remain properly in place on the
weights-holder 644. A translational motion 744 of the tool 640 is
illustrated in FIG. 30 c) to further separate the weight 70 secured
in the weights-holder 644 from the strip 74. This embodiment can be
used without the strip-cutting mechanism 502 or in conjunction with
the strip-cutting mechanism 502 without departing from the scope of
the present invention.
[0220] FIG. 31 shows another embodiment where sensor R is detecting
the presence of one or more weights 70 present on the tool 640. The
tool 640 of the illustrated embodiment is equipped with a pair of
weights-holders 644.1, 644.2 spaced apart with a recessed portion
668 to allow the projection of sensor R to sense the entire region
of the weights-receivers 648 to detect the undesired presence of
one or more weights 70 on the tool 640. The recessed portion 668
can be spaced apart with spacers 918 or with the thickness of the
hub portion 660 or the tool 640. The sensor R can be fixedly
maintained and the tool 640, once the central recess portion 668 is
aligned with the projection 914 of sensor R, is translated to move
the projection of sensor R through the central recessed portion 668
and detect the undesirable presence of possibly remaining weights
70 on the tool 640. For instance, FIG. 31 a) illustrates a
remaining weight 70 on the tool 640 that is sensed by sensor R. In
contrast, FIG. 31 a) illustrate the projection 914 of sensor R. The
tool 640 is moved next to a weights-remover 918 when an undesired
weight 70 is sensed by sensor R to engage the central recess
portion 668 of the tool 640 with a weights remover member 922 sized
and designed to fit in the central recessed portion 668. A
translation and a rotation of the tool 640 allows the weights
remover member 922 to remove the weights 70 that is going to
disconnect from the tool 640 and be ready for receiving new weights
70 thereon.
[0221] The tool 640 is equipped with three proximity sensors M
disposed at about 120 degrees from each other in respect with the
axis 642 of the tool 640, as exemplified in FIG. 32 illustrating an
embodiment thereof. The proximity sensors M can be embodied as
laser sensors and are collectively sensing the location of the tool
640 inside the wheel 748, illustrated with a tire 750 installed
thereon, using, for instance, triangulation methods. The projecting
lines 752 of the laser sensors M are illustrated in FIG. 32. The
robot 636 moves the tool 640 inside the center portion of the wheel
748 and the sensors M are acquiring measurements of the wheel's
shape, interior profile 764 and dimensions when the tool 640 moves
toward the center hub 756 of the wheel 748. This is a contactless
interaction of the tool 640 with the wheel 748 resulting in an
automatic detection of the characteristics of the wheel 748. With
the acquired measurements of the wheel's characteristics it is
possible to locate in space the tool 640 of the robot 636 precisely
at a desired location without referring to a wheels'
characteristics database. This process for acquiring measurements
of the wheel's characteristics is done in real time for each wheel
748 coming on the wheel-conveying module 60 hence allowing for
weights 70 installation on wheels 748 of various shapes and
dimensions. In other words, wheels 748 of different characteristics
can easily be balanced one after the other without requiring a
precise order or be grouped in set of four similar wheels, for
instance. The axial position of the tool 640 can be identified by
an axial sensor N disposed on the tool 640 in an embodiment. The
tool 640 can alternatively use the robot's 636 sensing capability,
if available, and move the tool 640 axially in the wheel 748 until
a contact occurs between the tool 640 and the center hub 756 of the
wheel 748 to axially locate the tool 640 in respect with the center
hub 756 of the wheel 748. In embodiments thereof, the robot 636 can
record the pressure applied on the weights 70 when securing the
weights 70 to the wheel 748. The pressure used for securing each
weight 70 to its associated wheel 748 is hence recorded for product
traceability.
[0222] The tool 640 of the robot 636 can be managed in relation
with a wheel and tire assembly on a basis of the data provided by
sensor M with projection 752 that detect the wheel geometry. In
contrast, the tool 640 of the robot 636 can be managed on a basis
of an image of the wheel and tire assembly provided by camera
sensor P and sensor O. The two methods of obtaining the data is
good and the latter prevents requiring sensor M.
[0223] The wheel 748 and tire 750 assembly is brought for balancing
weights 70 application on a conveyor 780 in the embodiment
illustrated in FIG. 34. The embodiment is directed to a conveyor
780 for transporting the wheel 748 and tire 750 assembly however
other means for transporting the wheel 748 and tire 750 assembly
like an industrial robot 636, a suspension mechanism, a rail on
which the wheel 748 and tire 750 assembly rolls to the next station
remains within the scope of the present invention. The
aforementioned description is going to focus on a conveyor
mechanism to facilitate the reading of the specification without
disclaimer or other suitable substitute systems. The wheel 748 and
tire 750 assembly is presented supported horizontally on the
conveyor 780 although the wheel 748 and tire 750 assembly could be
brought vertically or in other suitable positions, including
suspended to an appropriate mechanism, without departing from the
scope of the present application. The conveyor 780 is supported by
a frame 784 and is at a height sufficient to allow weights 70
installation from underneath. Installation of the weights 70 from
above is another non-illustrated embodiment encompassed by the
present description. The conveyor 780 of the illustrated embodiment
is equipped with a pair of wheel-supporting belts 788 selectively
actuated by a motor 792. The conveyor 780 can be actuated in
forward 808 and in reverse 812 directions to position the wheel 748
and tire 750 assembly as desired on the conveyor 780. The pair of
wheel-supporting belts 788 are supporting two sides of the wheel
748 and tire 750 assembly hence allowing miscellaneous sensing,
with sensors O and P, therebetween in addition to provide room for
the robot 636 tool 640 to reach the wheel 748 and secure the
weights 70 to the wheel 748. The motor 792 can be a servo motor, a
step motor, hydraulically or pneumatically actuated to precisely
carry the wheel 748 and tire 750 assembly in a weights-application
position 796. The illustrated embodiment includes a servo motor 800
optionally interconnected with a gearbox 804 to drive the conveyor
780. A pair of lateral rails 808 secured at proper height to the
frame 784 is optionally illustrated to provide an additional
feature to keep the wheel 748 and tire 750 assembly on the conveyor
780.
[0224] The balancing weight application apparatus is hence adapted
for automatically identifying characteristics of a wheel and
securing wheel-balancing weights thereon, the apparatus comprising
moving a wheel toward a wheel-balancing weights securing position,
sensing a wheel characteristics, sensing a wheel reference
location, providing a first predetermined quantity of
wheel-balancing weights and securing the first predetermined
quantity of wheel-balancing weights to a first position on the
wheel. The balancing weight application apparatus can sense the
wheel characteristics with a camera and/or a laser sensor, wherein
sensing of the wheel characteristics is performed while the wheel
and tire assembly is moving toward the wheel-balancing weights
application position, wherein the wheel characteristics are not
collected from a wheel and tire assembly characteristics database,
further comprising identifying a second position on a basis of the
first position for securing a second predetermined quantity of
wheel-balancing weights to the wheel on a basis of the second
position.
[0225] The conveyor 780 is functioning in cooperation with sensor O
capable of capturing the profile of the interior portion of the
wheel 748. Sensor O is embodied in FIG. 34 and FIG. 35 as a laser
proximity sensor secured to the frame 784 and directed at an angle
toward the conveyor 780. The projection beam 816 is projected
angularly to get a plurality of readings when the wheel 748 and
tire 750 assembly is moving on the conveyor 780. Sensing the
profile of the wheel 748 when the wheel 748 is moving is efficient
because the wheel 748 and tire 750 assembly does not need to stay
still for analyzing the shape of the wheel 748. The speed of the
conveyor 780 is known and used in conjunction with a belt encoder
and/or repetitive timely distance sensing between the wheel 748 and
sensor O to generate a profile 820 of the interior portion of the
wheel 748. A common time stamp is on way to put all the data
together. All data from the sensors are associated with the common
time stamp. The data associated with the same common time stamp is
put together to obtain all information required for operating the
tool 640 of the robot 636 or any other relevant equivalent system.
The profile of the interior portion of the wheel 748 is used by the
system's logic to manage the movements of the robot 636 and
position the tool 640 at desired locations to precisely secure the
weights 70 on the interior portion of the wheel 748 in accordance
with the required assembly for balancing the wheel 748 and tire 750
assembly.
[0226] Another sensor P, embodied as a camera, is operatively
located about the conveyor 780 of acquire an axial image of the
wheel 748 and tire 750 assembly. Sensor P is illustrated under the
conveyor 780 although it could be located at other locations
appropriate to get the desired image without departing from the
scope of the application. The image of the wheel 748 and tire 750
assembly is acquired by sensor P either with the wheel 748 and tire
750 assembly in movement or still on the conveyor 780. The image
obtained from sensor P can be used for a variety of purposes. Among
possible purposes, the image can be used to identify the radius of
the wheel 748, the color of the wheel 748, the part number of the
wheel, the location on the tire 750 of the indicator 824, generally
a colored dot, of the orientation of the heaviest/lightest portion
of the tire 750 that is also used to angularly locate the weights
70 required to balance the wheel 748 and tire 750 assembly. The
angular location of the weights 70 is based in reference of this
indicator 824 by the wheel-balancing analyzer apparatus (not
illustrated) and the data usable to secure the weights 70 are their
intended locations is at least partially based thereon by the
system. A plurality of weights 70 must be installed on a wheel for
dynamically balancing a wheel. A first set of weights 70 can be
located and secured on the wheel on a basis of the dot on the
wheel. The dot, or any other identification on the wheel/tire for
locating the weights thereon is used as a primary reference and the
other set(s) of weights 70 can be located and secured using a
relative position in respect with the location of the first set of
weights.
[0227] Another sensor is located on the wheel-conveying module 60
to validate a weights-installation position 828 of the wheel 748
and tire 750 assembly when the wheel 748 and tire 750 assembly are
reaching the location on the conveyor 780 where the robot 636 is
going to be accurately moving in respect with the
weights-installation position 828 of the wheel 748 and tire 750
assembly. There is a possibility the wheel 748 and tire 750
assembly slips on the conveyor 780 or that the wheel 748 and tire
750 assembly unintentionally moves on the conveyor 780 generating a
discrepancy between a calculated weights-installation position 828
of the wheel 748 and tire 750 assembly and the physical
weights-installation position 828 of the wheel 748 and tire 750
assembly. Sensor Q, illustrated in FIG. 34 and FIG. 35, is located
on a side of the conveyor 780 in a transverse projection
orientation to sense the tire 750 when the wheel 748 and tire 750
assembly are reaching the weights-installation position 828. Thus,
the physical location of the wheel 748 and tire 750 assembly is
known when sensor P is sensing the edge of the tire 750 on the
conveyor 780. This information can be used to stop the movement of
the conveyor 780 and calculate the possible discrepancy between the
calculated weights-installation position 828 of the wheel 748 and
tire 750 assembly and the physical weights-installation position
828 of the wheel 748 and tire 750 assembly. The reference position
used by the robot 636 is going to be adjusted consequently to
ensure the robot 636 is not going to interfere with the wheel 748
and tire 750 assembly and the required weights 70 are going to be
secured on the wheel 748 at the correct positions. One can
appreciate sensor Q is illustrated projecting its sensing beam at
an angle in reference with the horizontal. This is intended to help
prevent obtaining a reading from sensor Q that is undesirably
obtained with a reading of a lower portion of a threads of the tire
750. A reading from the bottom of a thread could create a
misreading of the real location of the tire 750 and cause a loss of
accuracy for installing the weights 70. Other configurations could
be possible to reach the same results however it is unlikely that a
straight thread be precisely aligned with the angle of sensor's Q
projection.
[0228] Sensor O can be calibrated to ensure proper reading of the
distance and the angle of the projection beam 816. FIG. 36
illustrates a possible calibration embodiment using two calibration
rulers 840.1 and 840.2. The first calibration ruler 840.1 is
located on a horizontal surface of the conveyor frame 784. The
second calibration ruler 840.2 is secured to a removable frame
support 844. The distance and the angle between both calibration
ruler 840.1, 840.2 is known and the reading of the sensor's
projection beam 816 on both calibration ruler 840.1, 840.2 can be
used to precisely identify the location, distance and projection
angle of sensor O in respect with the conveyor 780. The calibration
ruler 840.1 is embodied on a transparent support plate 848 through
which the projection beam 816 of the sensor O can pass and reach
the second calibration ruler 840.2. The second calibration ruler
840.2 is located on a temporary and removable support 844 at a
height over the conveyor 780 to accommodate the projection beam 816
angle required to reach the interior diameter of the wheel 748.
[0229] FIG. 37 and the following discussion provide a brief,
general description of an exemplary computer apparatus with which
at least some aspects of the present invention may rely upon to be
implemented. Some aspects of the present invention will be
described in the general context of computer-executable
instructions being executed by a computer apparatus interacting
with a robot 636. However, the methods of the present invention may
be effected by other apparatus. Program modules may include
routines, programs, objects, sequences, components, data structures
and other networked centered applications, etc. that perform a
task(s) or implement particular functions when confirmed by the
sensors described above. Moreover, those skilled in the art will
appreciate that at least some aspects of the present invention may
be practiced with other configurations, including Programmable
Logic Controller, industrial hand-held devices, multiprocessor
systems, microprocessor-based or programmable consumer electronics,
network computers, minicomputers, set top boxes, mainframe
computers and the like. At least some aspects of the present
invention may also be practiced in distributed computing
environments where tasks are performed by remote processing devices
linked through a communications network. In a distributed computing
environment, program modules may be located in local and/or remote
memory storage devices 1164.
[0230] With reference to FIG. 37, an exemplary apparatus 1100 for
implementing at least some aspects of the present invention
includes a general purpose computing device in the form of a
conventional computer 1120. The computer 1120 may include a
processing unit 1121, a system memory 1122, and a system bus 1123
that couples various system components, including the system memory
1122, to the processing unit 1121. The system bus 1123 may be any
of several types of bus structures including a memory bus or memory
controller, a peripheral bus, and a local bus using any of a
variety of bus architectures. The system memory may include read
only memory (ROM) 1124 and/or random access memory (RAM) 1125. A
basic input/output system 1126 (BIOS), containing basic routines
that help to transfer information between elements within the
computer 1120, such as during start-up, may be stored in ROM 1124.
The computer 1120 may also include a hard disk drive 1127 for
reading from and writing to a hard disk, (not shown), a magnetic
disk drive 1128 for reading from or writing to a (e.g., removable)
magnetic disk 1129, and an optical disk drive 1130 for reading from
or writing to a removable (magneto) optical disk 1131 such as a
compact disk or other (magneto) optical media. The hard disk drive
1127, magnetic disk drive 1128, and (magneto) optical disk drive
1130 may be coupled with the system bus 1123 by a hard disk drive
interface 1132, a magnetic disk drive interface 1133, and a
(magneto) optical drive interface 1134, respectively. The drives
and their associated storage media provide nonvolatile (or
persistent) storage of machine readable instructions, data
structures, program modules and other data for the computer 1120.
Although the exemplary environment described herein employs a hard
disk, a removable magnetic disk 1129 and a removable optical disk
1131, those skilled in the art will appreciate that other types of
storage media, such as magnetic cassettes, flash memory cards,
digital video disks, Bernoulli cartridges, random access memories
(RAMs), read only memories (ROM), and the like, may be used instead
of, or in addition to, the storage devices 1164 introduced
above.
[0231] A number of program modules may be stored on the hard disk
1127, magnetic disk 1129, (magneto) optical disk 1131, ROM 1124 or
RAM 1125, such as an operating system 1135 (for example,
Windows.RTM. NT.RTM. 4.0, sold by Microsoft.RTM. Corporation of
Redmond, Wash.), one or more application programs 1136, other
program modules 1137 (such as "Alice", which is a research system
developed by the User Interface Group at Carnegie Mellon University
available at www.Alice.org, OpenGL from Silicon Graphics Inc. of
Mountain View Calif., or Direct 3D from Microsoft Corp. of Bellevue
Wash.), and/or program data 1138 for example.
[0232] A user may enter commands and information into the computer
1120 through input devices, such as a keyboard 1140, a camera 1141
and pointing device 1142 for example. Other input devices (not
shown) such as a microphone, joystick, game pad, satellite dish,
scanner, a touch sensitive screen, accelerometers adapted to sense
movements of the user or movements of a device, or the like may
also be included. These and other input devices are often connected
to the processing unit 1121 through a serial port interface 1146
coupled to the system bus. However, input devices may be connected
by other interfaces, such as a parallel port, a game port, blue
tooth connection or a universal serial bus (USB). For example,
since the bandwidth of the camera 1141 may be too great for the
serial port, the video camera 1141 may be coupled with the system
bus 1123 via a video capture card (not shown). The video monitor
1147 or other type of display device may also be connected to the
system bus 1123 via an interface, such as a video adapter 1148 for
example. The video adapter 1148 may include a graphics accelerator.
One or more speaker 162 may be connected to the system bus 1123 via
a sound card 1161 (e.g., a wave table synthesizer such as product
number AWE64 Gold Card from Creative.RTM. Labs of Milpitas,
Calif.). In addition to the monitor 1147 and speaker(s) 1162, the
computer 1120 may include other peripheral output devices (not
shown), such as a printer for example. As an alternative or an
addition to the video monitor 1147, a stereo video output device,
such as a head mounted display or LCD shutter glasses for example,
could be used.
[0233] The computer 1120 may operate in a networked environment
which defines logical connections to one or more remote computers,
such as a remote computer 1149. The remote computer 1149 may be
another personal computer, a server, a router, a network PC, a peer
device or other common network node, and may include many or all of
the elements described above relative to the personal computer
1120, although only a memory storage device 1164 has been
illustrated in FIG. 37.
[0234] When used in a LAN, the computer 1120 may be connected to
the LAN 1151 through a network interface adapter (or "NIC") 1153.
When used in a WAN, such as the Internet, the computer 1120 may
include a modem 1154 or other means for establishing communications
over the wide area network 1152 (e.g. Wi-Fi, WinMax). The modem
1154, which may be internal or external, may be connected to the
system bus 1123 via the serial port interface 1146. In a networked
environment, at least some of the program modules depicted relative
to the computer 1120 may be store d in the remote memory storage
device. The network connections shown are exemplary and other means
of establishing a communications link between the computers may be
used.
[0235] Moving now to FIG. 38 depicting an exemplary control module
1066 used to manage the balancing weight application apparatus 10.
The control module 1266 is in communication with a plurality of
modules like the supplying module 1270, feeding module 1274, the
dispensing module 1278, the application module 1282 and the
conveying module 1086. Each module is operatively connected to the
control module 1266. The sensors indicated in FIG. 38 are listed in
Table 1 above with additional details.
[0236] A general flow chart of the balancing weight application
apparatus 10 is illustrated in FIG. 39. The process begins in this
case with the reception of the mass required to balance a wheel
1300. The mass required to balance a wheel is provided by another
system that rotates the wheel and tire assembly and identify the
locations and the masses required to balance the wheel and tire
assembly. The balancing weight application apparatus 10 is not
disclosing details about this stage that could be part of the
present application. Then, wheel-balancing weights 70 are supplied
1304. The weights 70 are fed 1308 in the balancing weight
application apparatus 10. The weights 70 are then dispensed in
quantity equivalent to the required balancing mass 1312. The wheel
and tire configuration is analyzed 1316 and the application
location(s) of the wheel balancing weights 70 are identified 1320.
Finally, the weights 70 are supplied and secured with the tool 640
to the wheel 748.
[0237] FIG. 40 illustrates a flow chart of an embodiment of the
invention. The embodiment is using a sensor-less tool 640 that is
using the data provided by steps 1334, 1338, 1342 and 1346 for
identifying trajectories and locations of the weights 70 to be
secured on the wheel 748. A "wait" step can be added between step
1362 and step 1358 when the condition "NO" of step 1362 is
satisfied.
[0238] A flow chart in FIG. 41 illustrating an embodiment related
to the spools management generally illustrated in FIG. 6 throughout
FIG. 10. The actions of the spools axial actuation mechanism to
receive and provide spools from the spools receptacle are
identified in an exemplary series of steps 1380 to 1416.
[0239] Steps 1420 to 1436 of FIG. 42 are exemplifying an embodiment
of the invention directed to the transversal adjustment of the
feeding module 30 when the strip 74 moves laterally when unwinding
from a wide spool.
[0240] A flow chart in FIG. 43 illustrating an embodiment related
to the strip 74 alignment is exemplified. If the strip 74 laterally
moves further than a predetermined threshold, sensed by sensors D,
as best seen in FIG. 11, the strip feeding module 30 is laterally
actuated to correct the situation. Exemplary steps are identified
between first step 1450 to the last step 1506.
[0241] The flow chart illustrated in FIG. 44 includes a series of
steps 1520 to 1580 exemplifying a feeding of a new strip 74 in the
feeding module 30 of the balancing weight application apparatus 10.
A back and forth movement of the feeding toothed wheel 412 to
properly engage the weights 70 is described.
[0242] The embodiment of the balancing weight application apparatus
10 using a toothed drive wheel 412 and the tool 640 to feed the
strip 74 could use the following steps 1600 to 1636 from FIG.
45.
[0243] FIG. 46 relates to counting of the weights 70 and the
blocking of the strip 74 prior to cutting the strip 74 as
illustrated in steps 1650 to 1666. Blocking of the strip 74 is
desirable to prevent risks of interference between the means for
cutting the strip 74 and a weight 70. Any movement of the strip 74
is also prevented when the strip 74 cutting occurs.
[0244] Another exemplary strip 74 cutting and blocking sequence is
illustrated in FIG. 47 with series of steps 1680 to 1712. A step
can be added between step 1662 and step 1666 to make the robot wait
in position before freeing the strip 74.
[0245] Strip 74 accumulation loops 378, 386 described above are
managed to keep a predetermined loop range. Steps 1720 to 1736 of
FIG. 48 and steps 1750 to 1766 of FIG. 49 are exemplifying an
embodiment of the invention.
[0246] While the invention has been described in connection with
what is presently considered to be the most practical and preferred
embodiments, it is to be understood that the invention is not to be
limited to the disclosed embodiments and elements, but, to the
contrary, is intended to cover various modifications, combinations
of features, equivalent arrangements, and equivalent elements
included within the spirit and scope of the appended claims.
Furthermore, the dimensions of limiting, and the size of the
components therein can vary from the size that may be portrayed in
the figures herein. Thus, it is intended that the present invention
covers the modifications and variations of the invention, provided
they come within the scope of the appended claims and their
equivalents.
* * * * *
References