U.S. patent application number 12/204003 was filed with the patent office on 2009-11-05 for 3-dimensional strip winding system for special giant all-steel radial otr tire.
Invention is credited to Jianhao ZHANG, Zhiquan ZHANG.
Application Number | 20090272834 12/204003 |
Document ID | / |
Family ID | 40912029 |
Filed Date | 2009-11-05 |
United States Patent
Application |
20090272834 |
Kind Code |
A1 |
ZHANG; Zhiquan ; et
al. |
November 5, 2009 |
3-DIMENSIONAL STRIP WINDING SYSTEM FOR SPECIAL GIANT ALL-STEEL
RADIAL OTR TIRE
Abstract
3-D Strip Winding System for a special giant all-steel radial
OTR tire comprising: a movable base plate, a pivoting device, a
support, a winding and applying device, and a bracket. The pivoting
device comprises a spin orbit of an external gear ring, a
positioning and rotating inner race, a support plate, a servo
motor, and a drive gear. The spin orbit of an external gear ring is
fixed on the plane of movable base plate. The positioning and
rotating inner race is flexibly attached inside the spin orbit of
an external gear ring. One end of the support plate is fixed to the
positioning and rotating inner race. The servo motor is fixedly
disposed on the support plate, the output end of which is connected
with the drive gear after passing through the support plate. The
drive gear is engaged with the outer edge of the spin orbit of the
external gear ring.
Inventors: |
ZHANG; Zhiquan; (Tianjin,
CN) ; ZHANG; Jianhao; (Tianjin, CN) |
Correspondence
Address: |
MATTHIAS SCHOLL
14781 MEMORIAL DRIVE, SUITE 1319
HOUSTON
TX
77079
US
|
Family ID: |
40912029 |
Appl. No.: |
12/204003 |
Filed: |
September 4, 2008 |
Current U.S.
Class: |
242/430 |
Current CPC
Class: |
B29D 30/30 20130101;
B29D 30/16 20130101 |
Class at
Publication: |
242/430 |
International
Class: |
B65H 54/00 20060101
B65H054/00 |
Foreign Application Data
Date |
Code |
Application Number |
May 5, 2008 |
CN |
200810052989.5 |
Claims
1. A 3-D strip winding system for a special giant all-steel radial
OTR tire, comprising: a movable base plate; a pivoting device; a
support; a winding and applying device; and a bracket for
minimizing stretch of a rubber strip, said bracket having an output
end; wherein said winding and applying device is fixed on said
support; said support is flexibly connected to said pivoting
device; said pivoting device is rotatably connected to said movable
base plate; and said output end is disposed on said support.
2. The 3-D strip winding system of claim 1, wherein said pivoting
device comprises a spin orbit for an external gear ring, a
positioning and rotating inner race, a support plate, a servo
motor, and a drive gear; said spin orbit for an external gear ring
is fixed on the upper surface plane of said movable base plate;
said positioning and rotating inner race is flexibly attached
inside said spin orbit for an external gear ring; one end of said
support plate is fixedly connected to said positioning and rotating
inner race; said drive servo motor is fixedly disposed on said
support plate; an output shaft of said drive servo motor passes
through said support plate and is fixedly connected to said drive
gear; and said drive gear is engaged with an outer edge of said
spin orbit of an external gear ring.
3. The 3-D strip winding system of claim 1, wherein said winding
and applying device comprises a floating guide, an applying and
stitching roller, a drive unit for the applying and stitching
roller cylinder, a support for the applying and stitching roller, a
non-return device, a cutter, an air discharging roller, and a
tachometer device, all connected to said supported plate of the
support; said drive unit for the applying and stitching roller
cylinder is connected to a lower front portion of said floating
guide; said support for the applying and stitching roller is
fixedly connected to the front end of said drive unit for the
applying and stitching roller cylinder; said non-return device is
flexibly connected to an upper end of said support; said applying
and stitching roller is rotatably disposed at the bottom of said
support; said cutter is connected to the bottom of said applying
and stitching roller; said air discharging roller is disposed below
said cutter; and said tachometer device is fixedly disposed below
said air discharging roller.
4. The 3-D strip winding system of claim 3, wherein said tachometer
device comprises a tachometer roller, an encoder, a link, a
cylinder bracket, a cylinder, a cylinder hinged support, a rail
adapter, rails, and slide blocks; said tachometer roller is
installed at the front end of said link; said encoder is fixed at
the side of said tachometer roller; said cylinder bracket is
connected to said link; said output end of said cylinder is hinged
with said cylinder bracket; said input end of said cylinder is
flexibly connected to said hinged support; said rails are placed
rigidly below said rail adapter; and said slide blocks are disposed
at the predetermined position of said rails and fastened to said
link.
5. The 3-D strip winding system of claim 1, wherein said bracket
comprises a group of telescopic rods, a group of servo drive
rollers for strip transportation, and a group of follow-up guide
rollers; said group of said servo drive rollers for strip
transportation and said group of said follow-up guide rollers are
installed on said telescopic rod; the front end of said bracket is
connected to said support and the back end is connected to said
movable base plate.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority benefits to Chinese Patent
Application No. 200810052989.5 filed on May 5, 2008, the contents
of all of the aforementioned specifications are incorporated herein
by reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The invention relates to a tread winding system for rubber
tire machinery, and more particularly to a 3-dimensional strip
winding system for a special giant all-steel radial OTR tire.
[0004] 2. Description of the Related Art
[0005] Giant tires, and special giant all-steel OTR (Off The Road)
tires are widely used. These tires have large diameter, wide cross
section, thick tread, and different winding shape from that of
general radial OTR tires. They also require higher winding and
applying accuracy than general radial OTR tires. Therefore,
traditional winding systems only applicable to general radial OTR
tires cannot be used with special giant all-steel OTR tires.
SUMMARY OF THE INVENTION
[0006] In view of the above-described problems, it is one objective
of the invention to provide a 3-D strip winding system for special
giant all-steel radial OTR tires, featuring high accuracy, flexible
adaption to different winding shapes, and safe and easy
operation.
[0007] To achieve the above objectives, in accordance with one
embodiment of the invention, provided is a 3-D strip winding system
for a special giant all-steel radial OTR tire, comprising: a
movable base plate, a pivoting device, a support, a winding and
applying device, and a bracket. The winding and applying device is
fixed on the support, which is flexibly connected to the pivoting
device. The pivoting device is rotatably connected with the movable
base plate. The bracket operates to minimize stretch of a rubber
strip, whose output end is disposed on the support.
[0008] The pivoting device comprises: a spin orbit of an external
gear ring, a positioning and rotating inner race, a support plate,
a servo motor, and a drive gear. The spin orbit of an external gear
ring is fixed on the upper surface plane of the movable base plate.
The positioning and rotating inner race is flexibly attached inside
the spin orbit of the external gear ring. One end of the support
plate is fixed to the positioning and rotating inner race. The
drive servo motor is rigidly disposed on the support plate, whose
output end is connected to the drive gear after passing through the
support plate. The drive gear is engaged with the outer edge of the
spin orbit for the external gear ring.
[0009] The winding and applying device comprises: a floating guide,
an applying and stitching roller, a drive unit for the applying and
stitching roller cylinder, a support for the applying and stitching
roller, a non-return device, a cutter, an air discharging roller,
and a tachometer device. All above-mentioned units are installed on
a supported plate of the support. The drive unit for the applying
and stitching roller cylinder is connected to a lower front portion
of the floating guide. The support for the applying and stitching
roller is fixed at the front end of the drive unit for the applying
and stitching roller cylinder. The non-return device is flexibly
connected to the upper end of the support. The applying and
stitching roller is rotatably disposed at the lower end of the
support. The cutter is connected to the bottom of the applying and
stitching roller. The air discharging roller is disposed below the
cutter. The tachometer device is fixedly disposed below the air
discharging roller.
[0010] The tachometer device comprises: a tachometer roller, an
encoder, a link, a cylinder bracket, a cylinder, a cylinder hinged
support, a rail adapter, rails, and slide blocks. The tachometer
roller is installed at the front end of the link. The encoder is
fixed at the side of the tachometer roller. The cylinder bracket is
fixedly connected to the link. The output end of the cylinder is
hinged with the cylinder bracket, and the input end of the cylinder
is flexibly connected to the hinged support. The rails are placed
rigidly below the rail adapter. The slide blocks are disposed at a
predetermined position on the rails and are fastened to the
link.
[0011] The bracket comprises: a group of telescopic rods for
bracket, a group of servo drive rollers for strip transportation,
and a group of follow-up guide rollers. The servo drive rollers for
strip transportation and the follow-up guide rollers are installed
at a proper position of the telescopic rods. The front end of the
bracket is connected to the support and the back end to the movable
base plate.
[0012] Advantages of the invention include:
[0013] 1) the tachometer device can detect in real time the line
speed of carcass joint point by PLC control, making the line speed
of carcass match that of strip transportation, thus improving the
uniformity of applied strip on the built carcass and guarantee the
precision requirements;
[0014] 2) the non-return device is able to prevent effectively the
rubber strip from moving back after winding and cutting;
[0015] 3) the servo drive rollers for strip transportation can
greatly reduce, at multiple spots, friction between the strip and
the follow-up guide rollers during the long travel of strip
transportation, decreasing the excessive stretch of strip during
transportation and improving the quality of winding and
applying.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Detailed description will be given below with reference to
accompanying drawings, in which
[0017] FIG. 1 is a schematic diagram of a 3-D strip winding system
for a special giant all-steel radial OTR tire according to one
embodiment of the invention;
[0018] FIG. 2 is a front view of a pivoting device according to one
embodiment of the invention as shown in FIG. 1;
[0019] FIG. 3 is a partial enlargement of a pivoting device
according to one embodiment of the invention as shown in FIG.
2;
[0020] FIG. 4 is a schematic diagram of a strip winding and
applying device according to one embodiment of the invention;
[0021] FIG. 5 is an "A" direction side view according to one
embodiment of the invention as shown in FIG. 4;
[0022] FIG. 6 is a bottom view of a tachometer device according to
one embodiment of the invention; and
[0023] FIG. 7 is a schematic diagram of a strip transportation
bracket according to one embodiment of the invention.
[0024] Legend: 1. Movable base plate, 2. Pivoting device, 2-1. Spin
orbit of an external gear ring, 2-2. Positioning and rotating inner
race, 2-3. Supported plate of pivoting device, 2-4. Drive gear,
2-5. Servo motor, 3. Support, 3-1. Supported plate of the support,
4. Winding and applying device, 4-1. Floating guide, 4-2. Drive
unit for an applying and stitching roller cylinder, 4-3. Support
for an applying and stitching roller, 4-4. non-return device, 4-5.
applying and stitching roller, 4-6. Cutter, 4-7. Air discharging
roller, 4-8. Tachometer device, 4-8-1. Tachometer roller, 4-8-2.
Encoder, 4-8-3. Link, 4-8-4. Cylinder bracket, 4-8-5. Cylinder,
4-8-6. Cylinder hinged support, 4-8-7. Rail adapter, 4-8-8. Rails,
4-8-9. Slide blocks, 5. Bracket, 5-1. Telescopic rod, 5-2. Servo
drive roller for strip transportation, 5-3. Follow-up guide
roller.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] As shown in FIGS. 1-3, a 3-D strip winding system for a
special giant all-steel radial OTR tire comprises a movable base
plate 1, a pivoting device 2, a support 3, a winding and applying
device 4 and a bracket 5. The winding and applying device 4 is
fixed on the support 3. The support 3 is flexibly connected to the
pivoting device 2. The pivoting device 2 is rotatably connected to
the movable base plate 1. The bracket 5 operates to minimize
stretch of a rubber strip, whose output end is disposed on the
support 3. The pivoting device 2 comprises a spin orbit of an
external gear ring 2-1, a positioning and rotating inner race 2-2,
a support plate 2-3, a servo motor 2-5 and drive gear 2-4. The spin
orbit of an external gear ring 2-1 is fixed on the plane of the
movable base plate 1. The positioning and rotating inner race 2-2
is flexibly attached inside the spin orbit of an external gear ring
2-1. One end of the support plate 2-3 is fixed to the positioning
and rotating inner race 2-2. The drive servo motor 2-5 is rigidly
disposed on the support plate 2-3, whose output end is connected to
the drive gear 2-4 after passing through the support plate. The
drive gear 2-4 is engaged with the outer edge of the spin orbit of
an external gear ring 2-1.
[0026] As shown in FIG. 4, the winding and applying device 4
comprises: a floating guide 4-1, an applying and stitching roller
4-5, a drive unit for the applying and stitching roller cylinder
4-2, a support for the applying and stitching roller 4-3, a
non-return device 4-4, a cutter 4-6, an air discharging roller 4-7,
and a tachometer device 4-8. All above-mentioned units are
installed on a supported plate of the support 3-1. The drive unit
for the applying and stitching roller cylinder 4-2 is connected to
a lower front portion of the floating guide 4-1. The support for
the applying and stitching roller 4-3 is fixed at the front end of
the drive unit for the applying and stitching roller cylinder 4-2.
In the embodiment, the support for the applying and stitching
roller is substantially in a triangular shape. The non-return
device 4-4 comprises a group of non-return rods, one end of which
is a wedge shape, and the other end is flexibly connected to the
upper end of the support for the applying and stitching roller 4-3.
The wedge-shaped end falls down naturally through gravity against
the applying and stitching roller 4-5, wherein the tip of the wedge
shape touches the applying and stitching roller 4-5. The applying
and stitching roller 4-5 is rotatably disposed at the bottom of the
support for an applying and stitching roller 4-3. The cutter 4-6 is
connected to the bottom of the applying and stitching roller 4-5.
The air discharging roller 4-7 is disposed below the cutter 4-6.
The tachometer device 4-8 is fixedly disposed below the air
discharging roller 4-7.
[0027] As shown is FIGS. 5 and 6, the tachometer device comprises:
a tachometer roller 4-8-1, an encoder 4-8-2, a link 4-8-3, a
cylinder bracket 4-8-4, a cylinder 4-8-5, a cylinder hinged support
4-8-6, rail adapters 4-8-7, rails 4-8-8 and slide blocks 4-8-9. The
tachometer roller 4-8-1 is installed at front end of the link
4-8-3. The encoder 4-8-2 is fixed at side of the tachometer roller
4-8-1. The cylinder bracket 4-8-4 is fixedly connected to the link
4-8-3. The output end of the cylinder 4-8-5 is hinged with the
cylinder bracket 4-8-4, and the input end of the cylinder 4-8-5 is
flexibly connected to the hinged support 4-8-6. The rails 4-8-8 are
placed rigidly below the rail adapter 4-8-7. The slide blocks 4-8-9
are disposed on a predetermined position of the rails 4-8-8 and are
fastened to the link 4-8-3.
[0028] As shown in FIGS. 1 and 7, the bracket comprises: a group of
telescopic rod for bracket 5-1, a group of servo drive rollers for
strip transportation 5-2, a group of follow-up guide rollers 5-3.
The servo drive rollers for strip transportation 5-2 and the
follow-up guide rollers 5-3 are installed at a proper position of
telescopic rod 5-1 for bracket. The front end of the bracket 5 is
connected to the support 3 and the back end to the movable base
plate 1.
[0029] The 3-D strip winding system for a special giant all-steel
radial OTR tire of the invention operates as follows:
[0030] According to required size and winding shape of the green
tire, adjust the transversal and longitudinal adjusting unit on the
movable base plate to allow the winding and applying device to run
in compliance with the tread profile. Then, adjust the pivoting
device so as to meet the turning radian required between the
sidewall and the crown. The rubber strip is fed onto the bracket by
previous sequence, as per technical requirements. The strip has to
be transported onto the winding and applying device after passing
through the guide rollers on the bracket. By the help of the
floating guide rollers, the strip is wound and applied, from
applying and stitching roller, to the preset position of the green
tire. The applying and stitching of the green tire is completed by
the applying and stitching roller and the air discharging roller,
which is used in conjunction with the movable base plate and the
pivoting device to finish the winding and applying of the required
shape for the green tire. During winding and applying, the
tachometer device can detect in real time the rotational speed of
the green tire so that the rotational speed of the green tire can
be adjusted to match that of strip transportation. After winding
and applying, the strip is cut by a cutter. Since the applied strip
on the applying and stitching roller is also underneath the
non-return device, it is possible to slightly insert a wedged-shape
tip into the strip to push forward the strip; thus, the strip does
not move back, which is convenient for next operation.
[0031] While particular embodiments of the invention have been
shown and described, it will be obvious to those skilled in the art
that changes and modifications may be made without departing from
the invention in its broader aspects, and therefore, the aim in the
appended claims is to cover all such changes and modifications as
fall within the true spirit and scope of the invention.
* * * * *