U.S. patent application number 10/237659 was filed with the patent office on 2003-03-13 for process and device for operating a synchronous winder.
This patent application is currently assigned to SUPERBA. Invention is credited to Henry, Pierre.
Application Number | 20030047637 10/237659 |
Document ID | / |
Family ID | 27248812 |
Filed Date | 2003-03-13 |
United States Patent
Application |
20030047637 |
Kind Code |
A1 |
Henry, Pierre |
March 13, 2003 |
Process and device for operating a synchronous winder
Abstract
A process and a device for operating a synchronous winding
machine, includes an assembly of shafts for driving packages,
shafts for driving fliers and a device for pre-feeding yarns. The
process comprises controlling with an electronic device a driving
in synchronism of the pre-feeding device and the drive shafts of
packages, as well as drive shafts for the fliers of packages, with
adjustment or variation of the angle of crossing of the yarns by
wobulation or electronic scrambling/jamming or by any other signal
of variation of the angle of crossing. The invention is most
particularly applicable to the field of the textile industry, in
particular winding machines for yarns and particularly synchronous
winding machines.
Inventors: |
Henry, Pierre; (Pfastatt,
FR) |
Correspondence
Address: |
YOUNG & THOMPSON
745 SOUTH 23RD STREET 2ND FLOOR
ARLINGTON
VA
22202
|
Assignee: |
SUPERBA
147 AVENUE ROBERT SCHUMAN
MULHOUSE
FR
68100
|
Family ID: |
27248812 |
Appl. No.: |
10/237659 |
Filed: |
September 10, 2002 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60324093 |
Sep 24, 2001 |
|
|
|
Current U.S.
Class: |
242/485.9 ;
242/477.6 |
Current CPC
Class: |
B65H 54/20 20130101;
B65H 54/74 20130101; B65H 2701/31 20130101; B65H 54/08 20130101;
B65H 54/52 20130101 |
Class at
Publication: |
242/485.9 ;
242/477.6 |
International
Class: |
B65H 054/42 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 12, 2001 |
FR |
01 11799 |
Claims
1. Process of operating a synchronous winding machine, comprising
an assembly of shafts for driving packages, shafts for driving
fliers and a pre-feed device for yarns, characterized in that it
consists in controlling by an electronic device a synchronous drive
of the pre-feed device and of the shafts for driving packages of
the packages, as well as the shafts for driving fliers of packages,
with adjustment, or variation of the angle of crossing of the yarns
by wobulation or electronic scrambling/jamming or by any other
signal for the variation of angle of crossing.
2. Device for practicing the process according to claim 1,
comprising an assembly of shafts for driving packages, shafts for
driving fliers and a device for pre-feed yarns, characterized in
that it is essentially constituted by at least two independent
driving motors, respectively, on the one hand shafts for driving
packages and of the pre-feed device and, on the other hand, shafts
for driving fliers, the control of these motors being ensured by
means of an electronic device.
3. Device according to claim 2, characterized in that the
electronic device is constituted by a computer assembly
programmable by means of a control panel with a graphic terminal or
tactile screen, this computer assembly being connected to
electronic inverters connected to the motors and acting on the
regime of these latter, continuously, as a function of the control
signals emitted by the computer assembly.
4. Device for practicing the process according to claim 1,
comprising an assembly of shafts for driving packages, of shafts
for driving fliers and a device for pre-feeding of yarns,
characterized in that it is essentially constituted by three
separate motors connected respectively to the shafts for driving
packages and to the devices for pre-feeding yarns and to the shafts
for driving the fliers, these motors being each supplied from a
corresponding electronic inverter and controlled by the electronic
circuit.
5. Device according to claim 4, characterized in that the motors
for driving the pre-feed device and for driving the shafts of the
fliers are each provided with a respective encoder for controlling
their respective speed of rotation, these encoders being connected
moreover to the electronic control circuit.
6. Device according to claim 2, characterized in that the device
for pre-feeding yarns is subdivided into a number of sub-devices
for pre-feeding equal to the number of stages of the synchronous
winding machine, these sub-devices being connected by a common
mechanical drive to the corresponding drive motor.
7. Device according to claim 6, characterized in that it is
provided with a specific drive motor for each pre-feed
sub-device.
8. Device according to claim 4, characterized in that it is
provided with a specific motor for each stage, for each line of
shafts for driving packages and shafts for driving the fliers.
9. Device according to claim 2, characterized in that the packages
are mounted on a gripping device controlled by the electronic
device and carrying out an application of said packages against the
corresponding shafts by means of a pressure cylinder and their
diameter being measured by means of a movement detector connected
to the electronic circuit.
10. Device according to claim 9, characterized in that the gripping
device is provided in lieu of and in place of the movement detector
or in supplement to this detector of a turn counter encoder
connected to the electronic circuit.
11. Device according to claim 4, characterized in that the device
for pre-feeding yarns is subdivided into a number of sub-devices
for pre-feeding equal to the number of stages of the synchronous
winding machine, these sub-devices being connected by a common
mechanical drive to the corresponding drive motor.
12. Device according to claim 5, characterized in that the device
for pre-feeding yarns is subdivided into a number of sub-devices
for pre-feeding equal to the number of stages of the synchronous
winding machine, these sub-devices being connected by a common
mechanical drive to the corresponding drive motor.
13. Device according to claim 4, characterized in that the packages
are mounted on a gripping device controlled by the electronic
device and carrying out an application of said packages against the
corresponding shafts by means of a pressure cylinder and their
diameter being measured by means of a movement detector connected
to the electronic circuit.
Description
[0001] The present invention relates to the field of the textile
industry, in particular machines for winding yarns and especially
synchronous winders and has for its object a process for operating
a winder. The invention also has for its object a device for
practicing this process.
[0002] At present, the operation of synchronous winders is carried
out by means of one or two drive motors acting, either in the first
case, on the package shafts and for driving the fliers and on the
drive of the pre-feed device, or, in the second case, on the one
hand on the shafts of the packages and for driving the fliers and,
on the other hand, on the pre-feed device.
[0003] The motor or motors used are connected to the corresponding
shafts by means of mechanical transmission elements such as
assemblies of pulleys and notched belts, or else by gearing.
[0004] Generally, when the drive of the shafts for the packages and
fliers is effected by a specific motor, the drive of the pre-feed
device is carried out with the interposition of a device for
wobulation or mechanical scrambling/jamming. Such a wobulation
device is adapted to carry out a rough winding avoiding the
formation of a strip which would be undesirable during unwinding
the packages.
[0005] However, these known mechanical devices of this type have
the drawback of being limited as to the possibilities of variation
of the speed of movement that they can give to the fliers, such
that a formation of strips cannot be completely avoided.
[0006] Moreover, because of the multiple passes necessary between
the pulleys and the transmission belts or the numerous gears to be
interposed between the motors and the shafts of the packages and
for driving the fliers, the size of the assembly for operating the
synchronous winding machines at present is relatively great.
Moreover, simply because of the number of intermediate elements,
the maintenance of the machine thus constituted is more
complicated.
[0007] The present invention has for its object to overcome these
drawbacks by providing a process for operating a synchronous
winding machine permitting controlling a synchronism drive of the
device for pre-feeding and for driving the packages and fliers.
[0008] To this end, the process according to the invention is
characterized in that it consists in controlling by means of an
electronic device a driving in synchronism of the pre-feed device
and the shafts of the packages, as well as the drive shaft of the
fliers of packages, with adjustment, or variation of the angle of
crossing of the yarns by wobulation or electronic
scrambling/jamming or by any other signal of variation of the angle
of the crossing.
[0009] The invention also has for its object a device for
practicing this process, characterized in that it is essentially
constituted by at least two independent drive motors, respectively,
on the one hand, for the shafts of the packages and of the pre-feed
device and, on the other hand, shafts for driving the fliers, the
control of these motors being assured by means of an electronic
device.
[0010] The invention will be better understood from the following
description, which relates to preferred embodiments, given by way
of non-limiting example, and explained with reference to the
accompanying schematic drawings, in which:
[0011] FIGS. 1 and 2 are schematic views of the principle of two
possible embodiments of the device for practicing the operating
process according to the invention, and
[0012] FIG. 3 is a fragmentary perspective view of a control panel
provided with the device according to the invention.
[0013] FIGS. 1 and 2 of the accompanying drawings show, by way of
example, an operating device for a synchronous winding machine
constituted by an assembly of package shafts 1, shafts 2 for
driving fliers 3 and by a device 4 for pre-feeding yarns 5.
[0014] According to the invention, the process for operating this
winding machine consists in controlling, by means of an electronic
device 6, a driving in synchronism of the pre-feed device 4 and the
shafts 1 for the packages, as well as the shafts 2 for driving the
fliers 3 of the packages, with adjustment or variation of the angle
of crossing of the yarns 5 by wobulation or electronic
scrambling/jamming or by any other signal of variation of the angle
of crossing.
[0015] This process is preferably carried out by the use of an
operating device which is essentially constituted by at least two
independent drive motors 7 and 8, respectively, on the one hand,
for the shafts 1 of the packages and for the device 4 for
pre-feeding and, on the other hand, the shafts 2 for driving the
fliers 3, the control of these motors 7 and 8 being ensured by
means of the electronic device 6.
[0016] The electronic device 6 is preferably constituted by a
computer assembly programmable by means of a control table 9 with a
graphic terminal or tactile screen, this computer assembly being
connected to electronic inverters 7' and 8' connected to the motors
7 and 8 and acting on the regime of these latter, continuously, as
a function of the control signals emitted by the computer assembly
6. Thus, it is possible to drive simultaneously and in synchronism
the shafts of the packages 1 and the pre-feed device 4 of the yarns
5, on the one hand, and, on the other hand, the drive shafts 2 of
the fliers 3, these shafts 2 being subjected continuously to
variable speeds, so as to carry out a continuous modification of
the angle of crossing of the yarns 5, during their winding on the
packages. The continuous variation of speed of the shafts 2 is due
to a wobulation or electronic scrambling/jamming with the feed of
the motor 8 by means of the inverter 8'.
[0017] Because of the continuous variation of the angle of crossing
of the yarns, obtained thanks to the use of the electronic inverter
8', under the surveillance of the electronic device 6, it is
possible to carry out a tighter winding of the yarns permitting an
increase in the density of the packages. As a result, for a same
volume of packages, the lengths of yarns is substantially greater,
such that the cost of transportation and storage is correspondingly
reduced.
[0018] FIG. 2 of the accompanying drawings shows a modification of
embodiment of the operating device according to the invention, in
which the operating device is constituted by three separate motors
10 to 12 connected respectively to the shaft 1 of the packages of
the device, shaft 4 for pre-feeding the yarns 5, and shafts 2 for
driving the fliers 3, these motors 10 to 12 being each supplied
from a corresponding electronic inverter 10' to 12' and controlled
by the electronic circuit 6.
[0019] Such an embodiment permits a miniaturization of the drive
motors 10 to 12, as well as a simplification of their mechanical
means by connection to the shafts 1 and 2 and to the device 4, such
that they can be housed in a relatively compact manner in a control
panel of relatively small volume.
[0020] Of course, in this embodiment, the wobulation of the drive
motor 12 for the shafts 2 of the fliers 3 is also carried out such
that a winding without risk of the formation of ribbons can be
obtained.
[0021] According to one characteristic of the invention, the motors
11 for driving the pre-feed device 4, and 12 for driving the shafts
2 of the fliers 3, are each provided with a respective encoder 11"
and 12" for controlling their respective speed of rotation, these
encoders being connected moreover to the electronic control circuit
6. Thus, the electronic circuit 6 receives simultaneously
information as to the speed of movement of the yarn 5 to be wound,
which speed can be deduced from the speed of rotation of the motor
10 controlled by the corresponding inverter 11', as well as an
indication of the curve of movement of each flier 3, which can be
deduced from the speed of rotation of the motor 12 and the curve of
the drive cam of said flier 3. As a result, the circuit 6 can at
any moment intervene as to the speed of movement of the fliers 3 by
emission of a wobulation or scrambling/jamming signal or any other
signal of the corresponding variation of angle of crossing, toward
the electronic inverter 12' associated with the motor 12, whose
speed of rotation is controlled, moreover by the encoder 12". Such
a provision of encoders 11" and 12" permits further improving the
precision of synchronization of the speeds obtained with the
inverters 10' and 12' alone.
[0022] Moreover, the electronic circuit 6 permanently manages the
speed of rotation of the motor 10, by means of the electronic
inverter 10', this speed of rotation being predetermined by
programming by means of the control panel 9. Thus, it suffices to
integrate into the electronic circuit 6 by means of the control
table 9 all the data relative to the packages to be formed, so that
said circuit 6, as a function of a given speed of the motor for
driving the shafts 1 of the packages, automatically regulates the
angle of crossing of the yarn on these packages, whilst
synchronizing the speed of the pre-feed device 4.
[0023] FIG. 3 of the accompanying drawings shows schematically a
control panel bringing together the assembly of the operating
device according to the invention.
[0024] According to another characteristic of the invention, the
pre-feed device 4 for the yarns 5 is preferably subdivided into a
number of sub-devices 4' for pre-feeding, equal in number to the
stages of the synchronous winding machine, these sub-devices being
connected by a common mechanical drive to the corresponding drive
motor 11. In the embodiment illustrated, three sub-devices 4' for
pre-feeding are provided and each is assigned to a stage of the
synchronous winding machine, such that the layers of yarns to be
distributed by each sub-device 4' for pre-feeding are of a width
substantially less than in the case of a single pre-feed device
whose layer of yarns is subdivided in the direction of the
different stages to be fed by means of simple return pulleys.
[0025] It is also possible, according to one modification of
embodiment of the invention (not shown in the accompanying
drawings), to provide a specific drive motor for each pre-feed
sub-device 4'.
[0026] Similarly, there can be provided a specific motor per stage,
for each line of shafts of packages and drive shafts for the
fliers. Thus, it is possible to provide a winding machine whose
stages are asynchronous with each other and synchronous
stage-wise.
[0027] As can be seen from FIG. 2, the motors 10 to 12 are
respectively connected, by means of simple mechanical transmission
such as pulleys and belts or gearing, to the corresponding shafts
1, sub-devices 4 and shaft 2. As a result, the corresponding
mechanical mounting can be carried out in a compact manner such
that the volume of the assembly of a control panel thus constituted
can be substantially reduced relative to existing panels of this
type.
[0028] According to another characteristic of the invention, the
packages are mounted on a gripping device 13 controlled by the
electronic device 6 and carrying out an application of said
packages against the corresponding shafts 1 by means of a pressure
cylinder 14, and their diameter is measured by means of a movement
detector 15 connected to the electronic circuit 6. Thus, the
electronic circuit 6 continuously receives information relative to
the diameter of the package and can regulate the bearing pressure
of the package on the shaft 1 as a function of said diameter and
thereby control particularly the firmness of the package.
[0029] According to a modified embodiment of the invention, the
gripping device 13 can be provided in place of the movement
detector 15 or as a complement to this detector 15, with a encoder
16 to count the turns, connected to the electronic circuit 6. Such
a encoder 16 permits, alone or in combination with the detector 15,
measuring the diameter of the package, such that the electronic
circuit 6 can regulate in an identical manner the bearing pressure
of the package on the shaft 1. In this latter case, the diameter of
the package is measured by taking into account the number of turns
of winding of the yarn.
[0030] Of course, the pressure cylinder 14 of the gripping device 3
can also be directly operated by the electronic circuit 6 by simple
taking into account of the data relative to the yarn, without
requiring a detector 15 and/or a encoder 16.
[0031] Thanks to the invention, it is possible to carry out
operation of a synchronous winding machine permitting a continuous
variation of the angle of crossing of the yarns and a perfect
synchronization between the winding and the pre-feed, such that the
packages obtained have a density substantially greater than those
known until now, and that for a same given volume, the lengths of
wound yarns are substantially greater.
[0032] Moreover, because of the improvement obtained in the winding
of the yarns, ribbons are avoided and the corresponding risks
during unwinding are also avoided.
[0033] Of course, the invention is not limited to the embodiments
described and shown in the accompanying drawings. Modifications
remain possible, particularly from the point of view of the
construction of various elements or by substitution of technical
equivalents, without thereby departing from the scope of protection
of the invention.
* * * * *