Title of Invention	APPARATUS AT A SPINNING ROOM MACHINE FOR DRAWING A CLOTHING ONTO A ROLLER
Abstract	In an apparatus at a spinning room machine, especially a card, carding machine, cleaner or the like, for drawing a clothing onto a roller using a roller drive unit, which apparatus comprises a drive motor arranged to be in drive connection with the roller drive unit or with at least one roller of the machine, the drive motor co-operates with a speed-of-rotation adjustment device. In order to allow, by simple means, automatic matching of the actual value of the speed of rotation to a prespecified value of the speed of rotation, the drive motor co-operates with a closed-loop speed-of-rotation control device which is incorporated into the control and regulation device of the spinning room machine.

Title of Invention

APPARATUS AT A SPINNING ROOM MACHINE FOR DRAWING A CLOTHING ONTO A ROLLER

Abstract

In an apparatus at a spinning room machine, especially a card, carding machine, cleaner or the like, for drawing a clothing onto a roller using a roller drive unit, which apparatus comprises a drive motor arranged to be in drive connection with the roller drive unit or with at least one roller of the machine, the drive motor co-operates with a speed-of-rotation adjustment device. In order to allow, by simple means, automatic matching of the actual value of the speed of rotation to a prespecified value of the speed of rotation, the drive motor co-operates with a closed-loop speed-of-rotation control device which is incorporated into the control and regulation device of the spinning room machine.

Full Text	Apparatus at a spinning room machine, especially a card, carding machine, cleaner or the like, for drawing a clothing onto a roller The invention relates to an apparatus at a spinning Ecw^sft- machine, especially a card, carding machine, cleaner or the like, for drawing a clothing onto a roller using a roller drive unit, which apparatus comprises a drive motor arranged to be in drive connection with the roller drive unit or with at least one roller of the machine and in which apparatus the drive motor co-operates with a speed- of-rotation adjustment device. In the area of the textile industry, especially in the case of cards and carding machines, there are a large number of rollers which have to be provided with clothings. Usually, those clothings are initially drawn on when the machines are being manufactured, that is to say when the rollers are in the uninstalled state. However, the clothings are wearing parts, which routinely have to be replaced after a certain period of operation. The replacement is usually carried out at the user's premises and with the rollers in the installed state. Very complicated equipment is required for the purpose. Amongst other things, the rollers have to be driven in a very specific manner for the clothing process, for which a separate, speed-of-rotation-controlled motor having a complicated holding means is used. In addition, the fact that the apparatus has to be mobile means that often considerable shortcomings with respect to. Inter alia, convenience, have to be accepted. In a known apparatus, there is provided a drive system for cards provided with carding flats, or carding machines, having at least one speed-of-rotation-controlled three- phase-current motor, with which there is associated an open-loop speed-of-rotation control device. Each three- phase-current motor can be controlled using a frequency converter by way of a D/A transducer. In the procedure for drawing on the all-steel clothing, one of the three-phase- current motors, the speed of rotation of which is subject to open-loop control, is arranged to be brought into drive connection mechanically with the licker-in, cylinder or doffer. Feedback of the actual value of the speed of rotation is not provided. In that apparatus, it is disadvantageous that a prespecified speed of rotation cannot be kept constant in the event of changes in the load. There is no automatic matching of the actual value of the speed of rotation to the prespecified value of the speed of rotation. In addition, the known apparatus is complicated. The problem underlying the invention is therefore to provide an apparatus of the kind described at the beginning that avoids the mentioned disadvantages and, especially, that allows automatic matching of the actual value of the speed of rotation to a prespecified value of the speed of rotation and which is simple in terms of equipment. The problem is solved by the characterising features of claim 1. In accordance with the invention, the control and regulation device of the spinning room machine is used for closed-loop control of the actual value of the speed of rotation. By that means, automatic matching of the actual speed of rotation to a prespecified actual speed of rotation is advantageously brought about by way of the internal closed-loop control device of the machine. At the same time, the actual speed of rotation is kept constant at the prespecified actual speed of rotation by the closed- loop control device even in the event of changes or variations in the load to which the roller drive unit and/or the roller is subjected. Claims 2 to 28 contain further advantageous embodiments of the invention. The invention will be described hereinafter in greater detail with reference to embodiments shown in the drawings, in which; Fig. 1 shows, in a diagrammatic side view, a carding machine with the apparatus according to the invention; Fig. 2a shows a drive arrangement having drive motors for the carding machine, the card feeder and the can coiler according to Fig. 1; Fig. 2b shows a drive arrangement having drive motors for the can coiler according to Fig, 1 and a carding machine drawing mechanism; Fig. 2c shows a drive motor, the speed of rotation of which is subject to closed- loop control; Fig. 2d shows an alternating-current drive motor, the speed of rotation of which is not subject to closed-loop control (AC drive); Fig. 3 shows a drive motor, the speed of rotation of which is subject to closed- loop control, for the cylinder and one for the doffer, which are used both during production and during clothing of the cylinder and of the doffer; Fig, 4a shows a drive motor, the speed of rotation of which is subject to closed- loop control, for the doffer whilst the doffer is in production; Fig. 4b shows the speed-of-rotation-controlled drive motor for the doffer according to Fig. 4a whilst the cylinder is being clothed; Fig. 5 shows a generalised circuit diagram with an electronic machine control and regulation device, electronic motor control and regulation devices and operating motors for the machine; Fig. 6 shows the dependence of the speed of rotation and torque of the drive motor for clothing on the drawing-on position of the clothing across the width of the roller; and Fig. 7 shows, in a diagrammatic side view, a winding-on and winding-off apparatus. Fig. 1 shows a carding machine K, for example a Triitzschler TC 03 carding machine, having a feed roller 1, feed table 2, lickers-in 3a, 3b, 3c, cylinder 4, doffer 5, stripper roller 6, nip rollers 7, 8, web-guiding element 10, draw-off rollers 11, 12, revolving card top 13 having card-top-deflecting rollers 13a, 13b and card top bars 14, can 15 and can coiler 16. Curved arrows denote the directions of rotation of the rollers. Reference letter M denotes the centre (axis) of the cylinder 4. Reference numeral 4a denotes the clothing and reference numeral 4b denotes the direction of rotation of the cylinder 4. Reference letter C denotes the direction of rotation of the revolving card top 13 at the carding location and reference letter B denotes the direction in which the card top bars 14 are moved on the reverse side. Reference numeral 17 denotes a clearer roller for the stripper roller 6 and reference numeral 18 denotes a card feeder. Fig, 2a shows, by way of example, a drive arrangement. Various drive motors and transmission elements together form the drive solution for the TC 03 carding machine. The cylinder 4 and lickers-in 3 are driven by associated three- phase-current motors. Special, maintenance-free belts ensure a long service life. A separate drive subject to closed-loop control is provided for removal of the fibre web in the case of the TC 03. Consequently, it is possible for the ideal degree of drafting to be selected for any speed. Even during starting-up and slowing-down, the degree of drafting that is correct for the speed at any given moment is always set by the control. This means that the slivers in the can are more uniform, from the first metre to the last. The motors for the draw-in roller 1, doffer 5 and web removal are associated servo drives. There are no high-maintenance gear mechanisms, for example in the doffer drive. The motors do not have brushes and consequently are completely maintenance-free. They are distinguished by very good dynamic properties and, conseguently, by a speed-of- rotation characteristic that is independent of the load. As a result, the short-wave evenness (Uster value) of the carded slivers is improved. A servo drive is additionally used in the case of optimal separate arrangement of the can coiler and can changer (see Fig. 2b). Fig. 2c shows an electric drive motor 21 wherein the speed of rotation is subject to closed-loop control, for example an AC servo motor, and Fig. 2d shows an electric drive motor 22 wherein the speed of rotation is not subject to closed-loop control, for example a non-controlled AC motor (AC = alternating current). In accordance with Fig. 2a, the following rollers are driven by a motor 21 wherein the speed of rotation is subject to closed-loop control: the intake roller 36 of the card feeder 18, by motor 23; the feed roller 1 of the carding machine K, by motor 25; the doffer 5, stripper roller 6 and nip rollers 7, 8, by motor 28; draw-off rollers 11, 12, by motor 29; rear card-top-deflecting roller 13a and clearer roller 19, by motor 30; intake and middle roller pairs of the carding machine drawing mechanism 38, by motor 33; delivery roller pair of the carding machine drawing mechanism 38, by motor 34; and can turntable, by motor 35. The following rollers are driven by a motor wherein the speed of rotation is not subject to closed-loop control: opener roller 37 of the card feeder 18, by motor 24; lickers-in 3a, 3b, 3c, by motor 26; cylinder 4, by motor 27; scraper roller 20, by motor 31; and clearer roller 17, by motor 32. In accordance with Fig. 3, the cylinder 4 is driven by a motor 39, the speed of rotation of which is subject to closed-loop control, and the doffer 5 is driven by the motor 28, the speed of rotation of which is subject to closed-loop control. On the shaft of the motor 39 there is arranged a belt wheel 40 and on the shaft of the cylinder 4 there is arranged a belt wheel 41, around which belt wheels there is looped an endless belt 42 as drive means. The outside of the belt 42 is in engagement with a guide roller 43 and a tensioning roller 44. On the shaft of the motor 28 there is arranged a belt wheel 45 and on the shaft of the doffer 5 there is arranged a belt wheel 46, around which belt wheels there is looped an endless belt 47 as drive means. The controlled motor 39, by way of an electronic motor control and regulation device 5O5, and the controlled motor 28, by way of an electronic motor control and regulation device 5O3, are in electronic communication (see Fig. 5} with an electronic machine control and regulation device 51 (see Fig. 5). In accordance with Figs. 4a, 4b, the motor 28, whose speed of rotation is subject to closed-loop control, is associated with the doffer 5. When the carding machine K is in production, the motor 28 drives the doffer 5 by way of the belt 47 (see Fig. 4a). The belt 47 loops around the belt wheels 45 and 46. When the cylinder 4 is being clothed, the motor 28 drives the cylinder 4 by way of another belt 53 {see Fig. 4b). The belt 53 loops around the belt wheels 45 and 41. By that means, a motor already present in the machine K and provided with a closed-loop speed-of-rotation control is used for driving the rollers during the clothing process at the customer's premises. That motor can be, in accordance with Fig. 3, a motor (39 or 28) which is in any case present for operation of the roller 4 or 5 in question during production. However, it is also possible, in accordance with Figs. 4a, 4b, for the doffer motor 28, which is, as standard, provided with a high-precision closed-loop speed-of-rotation control, to be used for clothing the cylinder 4, All that is required is for the drive belts 42 and 43 between the doffer motor 28 and doffer 5 and between the cylinder motor 39 and cylinder 4 to be removed and for a belt 53 or similar to be attached between the doffer motor 28 and cylinder 4 (Fig. 4b). The mechanical design of the machine is such that a drive transfer of that kind is possible and appropriate belt wheels of the correct size and type are already present. By that means it is possible very simply, rapidly and using only minimum outlay to achieve the drive for clothing the rollers. In accordance with Fig. 5, a plurality of motor control and regulation devices 50i, 5O2, 5O3, 5O4, for example servo axis controls, are provided. A drive motor, for example a motor 25, 26, 28, 29, is connected to each servo axis control 50i, 5O2, 5O3, 50^, respectively. The servo axis controls 50i, 5O2, 5O3, 50^] are connected to the electronic machine control and regulation device 51, for example a Trutzschler TMS 2. In accordance with Fig. 6, the dependence of the torque (N) and speed of rotation (rev./min.) of the drive motor, for example motor 28, during clothing of a roller, for example the cylinder 4, on the drawing-on position of the clothing wire 56 (see Fig. 7), seen across the width a of the roller, is shown. Reference numeral 52 denotes an operating and display unit, which is connected to the machine control and regulation device 51. The drawing-on apparatus shown in Fig. 7 basically comprises a holding station 54 for a supply coil 55 on which a card clothing 56 in the form of sawtooth wire is wound flat, a braking device 57 and a roller 4. The roller 4 is driven in the clockwise direction B by means of a motor 28 and a transmission device 53. The motor 28 has a control and regulation device 5O3, by means of which the speed of the roller 4 and also the direction of rotation can be controlled. The braking device 57 comprises a control and regulation device 58, which ensures a particular braking action. The control and regulation device 5O3 and the control and regulation device 58 are in operative connection with one another. In a further embodiment, they can also be used in the form of a unit for controlling both the braking device 57 and also the motor 28. The carding clothing 56 in the form of sawtooth wire is wound off from the supply coil 55 arranged on a mounting block 59 and is then passed through the braking device 57 and wound onto the outer periphery of the roller 4. After the winding~on process, the carding clothing 56 then extends around the outer periphery of the roller 4 on a helical course. The braking device 57, in co-operation with the roller 4 and in that case, especially, the roller drive, the motor 28, is intended to exert pre-tensioning in the region 60 of the carding clothing 56. That pre-tensioning ensures that the carding clothing 56 is uniformly and lastingly wound on or drawn on. The closed-loop speed-of-rotation control device is an integral part of the control and regulation system 51; 50l to 5O5. For the invention, use is made especially of the closed-loop speed-of-rotation control function of the motor control and regulation devices 50i to 50s. Commercially available closed-loop speed-of-rotation control devices can be used. Closed-loop servo control devices specifically matched to the machine K can also be used. The closed-loop servo control devices can be controlled directly by digital signals by way of a bus system, for example CANbus. Feedback of the actual value of the speed of rotation is used in the process. WE CLAIM 1. Apparatus at a spinning room machine, especially a card, carding machine, cleaner or the like, for drawi.ng a clothing onto a roller using a roller drive unit, which apparatus comprises a drive motor arranged to be in drive connection with the roller drive unit or with at least one roller of the machine and in which apparatus the drive motor co-operates with a speed-of-rotation adjustment device, characterised in that the drive motor co-operates with a closed-loop speed-of-rotation control device which is incorporated into the control and regulation system (51; 501 to 505) of the spinning room machine (K). 2. Apparatus according to claim 1, characterised in that the closed-loop speed-of-rotation control device is incorporated into the electronic machine control and regulation device (51), 3. 'Apparatus according to either claim 1 or claim 2, characterised in that the closed-loop speed-of-rotation control device is incorporated into the electronic motor control and regulation devices (50i to SOs) . 4. Apparatus according to any one of claims 1 to 3, characterised in that, for operation of the closed-loop speed-of-rotation control device, the operating device of the spinning room machine is used. 5. Apparatus according to any one of claims 1 to 4, characterised in that the display device of the spinning room machine is used. 6. Apparatus according to any one of claims 1 to 5, characterised in that, for drawing-on, an optimum drive motor torque is generated. 7. Apparatus according to any one of claims 1 to 6, characterised in that the optimum torque can be modified during drawing-on. 8. Apparatus according to any one of claims Ito 7, characterised in that the optimum torque is constant during drawing-on. 9. Apparatus according to any one of claims 1 to 8, characterised in that, by way of the display device, the operator receives instructions, observations, information and the like before, during and after drawing-on. 10. Apparatus according to any one of claims 1 to 9, characterised in that, for driving a roller to be clothed, there is used a drive motor of the carding machine which is provided for driving another roller during production. 11. Apparatus according to any one of claims 1 to 10, characterised in that the other roller is a roller of the carding machine. 12. Apparatus according to any one of claims 1 to 11, characterised in that the other roller is the roller of the device located upstream, for example of the card feeder. 13. Apparatus according to any one of claims 1 to 12, characterised in that the other roller is the roller of the device located downstream, for example of the can coiler or the carding machine drawing mechanism. 14. Apparatus according to any one of claims 1 to 13, characterised in that the doffer motor is used for driving the cylinder during the clothing process. 15. Apparatus according to any one of claims 1 to 14, characterised in that the intake motor is used for driving the cylinder during the clothing process. 16. Apparatus according to any one of claims 1 to 15, characterised in that the delivery motor is used for driving the cylinder during the clothing process. 17. Apparatus according to any one of claims 1 to 16, characterised in that the doffer motor is used for driving the doffer during the clothing process. 18. Apparatus according to any one of claims 1 to 17, characterised in that the cylinder motor is used for driving the cylinder during the clothing process. 19- Apparatus according to any one of claims 1 to 18, characterised in that the requisite functions for drawing- on of the clothings, especially the drive for the roller being clothed, are accomplished by means of the control of the machine, card or carding machine. 20. Apparatus according to any one of claims 1 to 19, characterised in that, during-the drawing-on process, the drive for the roller being clothed generates a torque which is dependent on position. 21. Apparatus according to any one of claims 1 to 20, characterised in that, during the drawing-on process, the drive for the roller being clothed generates a speed of rotation which is dependent on position. 22. Apparatus according to any one of claims 1 to 21, characterised in that in the control and regulation apparatus there is provided a specific program for the clothing process which is started up when required. 23. Apparatus according to any one of claims 1 to 22, characterised in that the program for the clothing process is capable of generating particular torques and/or speeds of rotation necessary for an optimum clothing result. 24. Apparatus according to any one of claims 1 to 23, characterised in that generation is accomplished irrespective of the drawing-on position in question. 25. Apparatus according to any one of claims 1 to 24, characterised in that, in the clothing process, for the drive motor in question a set of parameters optimising the function of the motor is loaded into the corresponding drive control. 26. Apparatus according to any one of claims 1 to 25, characterised in that a braking device is provided which comprises an adjustment device for adjusting the braking action. 27. Apparatus according to any one of claims 1 to 26, characterised in that the braking device comprises a control and/or regulation device by means of which the braking action can be automatically matched to the pretensioning for winding-on. 28. Apparatus according to any one of claims 1 to 27, characterised in that the roller drive unit is incorporated into the open-loop and/or closed-loop control circuit of the control and/or regulation unit and the roller drive unit can be subjected to. open-loop and/or closed-loop control for automatic matching to the predetermined pretensioning for winding-on. In an apparatus at a spinning room machine, especially a card, carding machine, cleaner or the like, for drawing a clothing onto a roller using a roller drive unit, which apparatus comprises a drive motor arranged to be in drive connection with the roller drive unit or with at least one roller of the machine, the drive motor co-operates with a speed-of-rotation adjustment device. In order to allow, by simple means, automatic matching of the actual value of the speed of rotation to a prespecified value of the speed of rotation, the drive motor co-operates with a closed-loop speed-of-rotation control device which is incorporated into the control and regulation device of the spinning room machine.

Full Text

Apparatus at a spinning room machine, especially a card,
carding machine, cleaner or the like, for drawing a
clothing onto a roller
The invention relates to an apparatus at a spinning Ecw^sft-
machine, especially a card, carding machine, cleaner or the
like, for drawing a clothing onto a roller using a roller
drive unit, which apparatus comprises a drive motor
arranged to be in drive connection with the roller drive
unit or with at least one roller of the machine and in
which apparatus the drive motor co-operates with a speed-
of-rotation adjustment device.
In the area of the textile industry, especially in the
case of cards and carding machines, there are a large
number of rollers which have to be provided with clothings.
Usually, those clothings are initially drawn on when the
machines are being manufactured, that is to say when the
rollers are in the uninstalled state. However, the
clothings are wearing parts, which routinely have to be
replaced after a certain period of operation. The
replacement is usually carried out at the user's premises
and with the rollers in the installed state. Very
complicated equipment is required for the purpose. Amongst
other things, the rollers have to be driven in a very
specific manner for the clothing process, for which a
separate, speed-of-rotation-controlled motor having a
complicated holding means is used. In addition, the fact
that the apparatus has to be mobile means that often
considerable shortcomings with respect to. Inter alia,
convenience, have to be accepted.
In a known apparatus, there is provided a drive system
for cards provided with carding flats, or carding machines,
having at least one speed-of-rotation-controlled three-
phase-current motor, with which there is associated an
open-loop speed-of-rotation control device. Each three-
phase-current motor can be controlled using a frequency
converter by way of a D/A transducer. In the procedure for
drawing on the all-steel clothing, one of the three-phase-
current motors, the speed of rotation of which is subject
to open-loop control, is arranged to be brought into drive
connection mechanically with the licker-in, cylinder or
doffer. Feedback of the actual value of the speed of
rotation is not provided. In that apparatus, it is
disadvantageous that a prespecified speed of rotation
cannot be kept constant in the event of changes in the
load. There is no automatic matching of the actual value of
the speed of rotation to the prespecified value of the
speed of rotation. In addition, the known apparatus is
complicated.
The problem underlying the invention is therefore to
provide an apparatus of the kind described at the beginning
that avoids the mentioned disadvantages and, especially,
that allows automatic matching of the actual value of the
speed of rotation to a prespecified value of the speed of
rotation and which is simple in terms of equipment.
The problem is solved by the characterising features of
claim 1.
In accordance with the invention, the control and
regulation device of the spinning room machine is used for
closed-loop control of the actual value of the speed of
rotation. By that means, automatic matching of the actual
speed of rotation to a prespecified actual speed of
rotation is advantageously brought about by way of the
internal closed-loop control device of the machine. At the
same time, the actual speed of rotation is kept constant at
the prespecified actual speed of rotation by the closed-
loop control device even in the event of changes or
variations in the load to which the roller drive unit
and/or the roller is subjected.
Claims 2 to 28 contain further advantageous embodiments
of the invention.
The invention will be described hereinafter in greater
detail with reference to embodiments shown in the drawings,
in which;
Fig. 1 shows, in a diagrammatic side view, a
carding machine with the apparatus
according to the invention;
Fig. 2a shows a drive arrangement having drive
motors for the carding machine, the card
feeder and the can coiler according to
Fig. 1;
Fig. 2b shows a drive arrangement having drive
motors for the can coiler according to
Fig, 1 and a carding machine drawing
mechanism;
Fig. 2c shows a drive motor, the speed of
rotation of which is subject to closed-
loop control;
Fig. 2d shows an alternating-current drive
motor, the speed of rotation of which is
not subject to closed-loop control (AC
drive);
Fig. 3 shows a drive motor, the speed of
rotation of which is subject to closed-
loop control, for the cylinder and one
for the doffer, which are used both
during production and during clothing of
the cylinder and of the doffer;
Fig, 4a shows a drive motor, the speed of
rotation of which is subject to closed-
loop control, for the doffer whilst the
doffer is in production;
Fig. 4b shows the speed-of-rotation-controlled
drive motor for the doffer according to
Fig. 4a whilst the cylinder is being
clothed;
Fig. 5 shows a generalised circuit diagram with
an electronic machine control and
regulation device, electronic motor
control and regulation devices and
operating motors for the machine;
Fig. 6 shows the dependence of the speed of
rotation and torque of the drive motor
for clothing on the drawing-on position
of the clothing across the width of the
roller; and
Fig. 7 shows, in a diagrammatic side view, a
winding-on and winding-off apparatus.
Fig. 1 shows a carding machine K, for example a
Triitzschler TC 03 carding machine, having a feed roller 1,
feed table 2, lickers-in 3a, 3b, 3c, cylinder 4, doffer 5,
stripper roller 6, nip rollers 7, 8, web-guiding
element 10, draw-off rollers 11, 12, revolving card top 13
having card-top-deflecting rollers 13a, 13b and card top
bars 14, can 15 and can coiler 16. Curved arrows denote the
directions of rotation of the rollers. Reference letter M
denotes the centre (axis) of the cylinder 4. Reference
numeral 4a denotes the clothing and reference numeral 4b
denotes the direction of rotation of the cylinder 4.
Reference letter C denotes the direction of rotation of the
revolving card top 13 at the carding location and reference
letter B denotes the direction in which the card top
bars 14 are moved on the reverse side. Reference numeral 17
denotes a clearer roller for the stripper roller 6 and
reference numeral 18 denotes a card feeder.
Fig, 2a shows, by way of example, a drive arrangement.
Various drive motors and transmission elements together
form the drive solution for the TC 03 carding machine. The
cylinder 4 and lickers-in 3 are driven by associated three-
phase-current motors. Special, maintenance-free belts
ensure a long service life. A separate drive subject to
closed-loop control is provided for removal of the fibre
web in the case of the TC 03. Consequently, it is possible
for the ideal degree of drafting to be selected for any
speed. Even during starting-up and slowing-down, the degree
of drafting that is correct for the speed at any given
moment is always set by the control. This means that the
slivers in the can are more uniform, from the first metre
to the last. The motors for the draw-in roller 1, doffer 5
and web removal are associated servo drives. There are no
high-maintenance gear mechanisms, for example in the doffer
drive. The motors do not have brushes and consequently are
completely maintenance-free. They are distinguished by very
good dynamic properties and, conseguently, by a speed-of-
rotation characteristic that is independent of the load. As
a result, the short-wave evenness (Uster value) of the
carded slivers is improved. A servo drive is additionally
used in the case of optimal separate arrangement of the can
coiler and can changer (see Fig. 2b).
Fig. 2c shows an electric drive motor 21 wherein the
speed of rotation is subject to closed-loop control, for
example an AC servo motor, and Fig. 2d shows an electric
drive motor 22 wherein the speed of rotation is not subject
to closed-loop control, for example a non-controlled AC
motor (AC = alternating current).
In accordance with Fig. 2a, the following rollers are
driven by a motor 21 wherein the speed of rotation is
subject to closed-loop control: the intake roller 36 of the
card feeder 18, by motor 23; the feed roller 1 of the
carding machine K, by motor 25; the doffer 5, stripper
roller 6 and nip rollers 7, 8, by motor 28; draw-off
rollers 11, 12, by motor 29; rear card-top-deflecting
roller 13a and clearer roller 19, by motor 30; intake and
middle roller pairs of the carding machine drawing
mechanism 38, by motor 33; delivery roller pair of the
carding machine drawing mechanism 38, by motor 34; and can
turntable, by motor 35. The following rollers are driven by
a motor wherein the speed of rotation is not subject to
closed-loop control: opener roller 37 of the card
feeder 18, by motor 24; lickers-in 3a, 3b, 3c, by motor 26;
cylinder 4, by motor 27; scraper roller 20, by motor 31;
and clearer roller 17, by motor 32.
In accordance with Fig. 3, the cylinder 4 is driven by a
motor 39, the speed of rotation of which is subject to
closed-loop control, and the doffer 5 is driven by the
motor 28, the speed of rotation of which is subject to
closed-loop control. On the shaft of the motor 39 there is
arranged a belt wheel 40 and on the shaft of the cylinder 4
there is arranged a belt wheel 41, around which belt wheels
there is looped an endless belt 42 as drive means. The
outside of the belt 42 is in engagement with a guide
roller 43 and a tensioning roller 44. On the shaft of the
motor 28 there is arranged a belt wheel 45 and on the shaft
of the doffer 5 there is arranged a belt wheel 46, around
which belt wheels there is looped an endless belt 47 as
drive means. The controlled motor 39, by way of an
electronic motor control and regulation device 5O5, and the
controlled motor 28, by way of an electronic motor control
and regulation device 5O3, are in electronic communication
(see Fig. 5} with an electronic machine control and
regulation device 51 (see Fig. 5).
In accordance with Figs. 4a, 4b, the motor 28, whose
speed of rotation is subject to closed-loop control, is
associated with the doffer 5. When the carding machine K is
in production, the motor 28 drives the doffer 5 by way of
the belt 47 (see Fig. 4a). The belt 47 loops around the
belt wheels 45 and 46. When the cylinder 4 is being
clothed, the motor 28 drives the cylinder 4 by way of
another belt 53 {see Fig. 4b). The belt 53 loops around the
belt wheels 45 and 41.
By that means, a motor already present in the machine K
and provided with a closed-loop speed-of-rotation control
is used for driving the rollers during the clothing process
at the customer's premises. That motor can be, in
accordance with Fig. 3, a motor (39 or 28) which is in any
case present for operation of the roller 4 or 5 in question
during production. However, it is also possible, in
accordance with Figs. 4a, 4b, for the doffer motor 28,
which is, as standard, provided with a high-precision
closed-loop speed-of-rotation control, to be used for
clothing the cylinder 4, All that is required is for the
drive belts 42 and 43 between the doffer motor 28 and
doffer 5 and between the cylinder motor 39 and cylinder 4
to be removed and for a belt 53 or similar to be attached
between the doffer motor 28 and cylinder 4 (Fig. 4b). The
mechanical design of the machine is such that a drive
transfer of that kind is possible and appropriate belt
wheels of the correct size and type are already present. By
that means it is possible very simply, rapidly and using
only minimum outlay to achieve the drive for clothing the
rollers.
In accordance with Fig. 5, a plurality of motor control
and regulation devices 50i, 5O2, 5O3, 5O4, for example servo
axis controls, are provided. A drive motor, for example a
motor 25, 26, 28, 29, is connected to each servo axis
control 50i, 5O2, 5O3, 50^, respectively. The servo axis
controls 50i, 5O2, 5O3, 50^] are connected to the electronic
machine control and regulation device 51, for example a
Trutzschler TMS 2.
In accordance with Fig. 6, the dependence of the
torque (N) and speed of rotation (rev./min.) of the drive
motor, for example motor 28, during clothing of a roller,
for example the cylinder 4, on the drawing-on position of
the clothing wire 56 (see Fig. 7), seen across the width a
of the roller, is shown.
Reference numeral 52 denotes an operating and display
unit, which is connected to the machine control and
regulation device 51.
The drawing-on apparatus shown in Fig. 7 basically
comprises a holding station 54 for a supply coil 55 on
which a card clothing 56 in the form of sawtooth wire is
wound flat, a braking device 57 and a roller 4. The
roller 4 is driven in the clockwise direction B by means of
a motor 28 and a transmission device 53. The motor 28 has a
control and regulation device 5O3, by means of which the
speed of the roller 4 and also the direction of rotation
can be controlled. The braking device 57 comprises a
control and regulation device 58, which ensures a
particular braking action. The control and regulation
device 5O3 and the control and regulation device 58 are in
operative connection with one another. In a further
embodiment, they can also be used in the form of a unit for
controlling both the braking device 57 and also the
motor 28.
The carding clothing 56 in the form of sawtooth wire is
wound off from the supply coil 55 arranged on a mounting
block 59 and is then passed through the braking device 57
and wound onto the outer periphery of the roller 4. After
the winding~on process, the carding clothing 56 then
extends around the outer periphery of the roller 4 on a
helical course.
The braking device 57, in co-operation with the roller 4
and in that case, especially, the roller drive, the
motor 28, is intended to exert pre-tensioning in the
region 60 of the carding clothing 56. That pre-tensioning
ensures that the carding clothing 56 is uniformly and
lastingly wound on or drawn on.
The closed-loop speed-of-rotation control device is an
integral part of the control and regulation system 51; 50l
to 5O5. For the invention, use is made especially of the
closed-loop speed-of-rotation control function of the motor
control and regulation devices 50i to 50s.
Commercially available closed-loop speed-of-rotation
control devices can be used. Closed-loop servo control
devices specifically matched to the machine K can also be
used. The closed-loop servo control devices can be
controlled directly by digital signals by way of a bus
system, for example CANbus. Feedback of the actual value of
the speed of rotation is used in the process.
WE CLAIM
1. Apparatus at a spinning room machine, especially a
card, carding machine, cleaner or the like, for drawi.ng a
clothing onto a roller using a roller drive unit, which
apparatus comprises a drive motor arranged to be in drive
connection with the roller drive unit or with at least one
roller of the machine and in which apparatus the drive
motor co-operates with a speed-of-rotation adjustment
device, characterised in that the drive motor co-operates
with a closed-loop speed-of-rotation control device which
is incorporated into the control and regulation system (51;
501 to 505) of the spinning room machine (K).
2. Apparatus according to claim 1, characterised in that
the closed-loop speed-of-rotation control device is
incorporated into the electronic machine control and
regulation device (51),
3. 'Apparatus according to either claim 1 or claim 2,
characterised in that the closed-loop speed-of-rotation
control device is incorporated into the electronic motor
control and regulation devices (50i to SOs) .
4. Apparatus according to any one of claims 1 to 3,
characterised in that, for operation of the closed-loop
speed-of-rotation control device, the operating device of
the spinning room machine is used.
5. Apparatus according to any one of claims 1 to 4,
characterised in that the display device of the spinning
room machine is used.
6. Apparatus according to any one of claims 1 to 5,
characterised in that, for drawing-on, an optimum drive
motor torque is generated.
7. Apparatus according to any one of claims 1 to 6,
characterised in that the optimum torque can be modified
during drawing-on.
8. Apparatus according to any one of claims Ito 7,
characterised in that the optimum torque is constant during
drawing-on.
9. Apparatus according to any one of claims 1 to 8,
characterised in that, by way of the display device, the

operator receives instructions, observations, information
and the like before, during and after drawing-on.
10. Apparatus according to any one of claims 1 to 9,
characterised in that, for driving a roller to be clothed,
there is used a drive motor of the carding machine which is
provided for driving another roller during production.
11. Apparatus according to any one of claims 1 to 10,
characterised in that the other roller is a roller of the
carding machine.
12. Apparatus according to any one of claims 1 to 11,
characterised in that the other roller is the roller of the
device located upstream, for example of the card feeder.
13. Apparatus according to any one of claims 1 to 12,
characterised in that the other roller is the roller of the
device located downstream, for example of the can coiler or
the carding machine drawing mechanism.
14. Apparatus according to any one of claims 1 to 13,
characterised in that the doffer motor is used for driving
the cylinder during the clothing process.
15. Apparatus according to any one of claims 1 to 14,
characterised in that the intake motor is used for driving
the cylinder during the clothing process.
16. Apparatus according to any one of claims 1 to 15,
characterised in that the delivery motor is used for
driving the cylinder during the clothing process.
17. Apparatus according to any one of claims 1 to 16,
characterised in that the doffer motor is used for driving
the doffer during the clothing process.
18. Apparatus according to any one of claims 1 to 17,
characterised in that the cylinder motor is used for
driving the cylinder during the clothing process.
19- Apparatus according to any one of claims 1 to 18,
characterised in that the requisite functions for drawing-
on of the clothings, especially the drive for the roller
being clothed, are accomplished by means of the control of
the machine, card or carding machine.
20. Apparatus according to any one of claims 1 to 19,
characterised in that, during-the drawing-on process, the
drive for the roller being clothed generates a torque which
is dependent on position.
21. Apparatus according to any one of claims 1 to 20,
characterised in that, during the drawing-on process, the
drive for the roller being clothed generates a speed of
rotation which is dependent on position.
22. Apparatus according to any one of claims 1 to 21,
characterised in that in the control and regulation
apparatus there is provided a specific program for the
clothing process which is started up when required.
23. Apparatus according to any one of claims 1 to 22,
characterised in that the program for the clothing process
is capable of generating particular torques and/or speeds
of rotation necessary for an optimum clothing result.
24. Apparatus according to any one of claims 1 to 23,
characterised in that generation is accomplished
irrespective of the drawing-on position in question.
25. Apparatus according to any one of claims 1 to 24,
characterised in that, in the clothing process, for the
drive motor in question a set of parameters optimising the
function of the motor is loaded into the corresponding
drive control.
26. Apparatus according to any one of claims 1 to 25,
characterised in that a braking device is provided which
comprises an adjustment device for adjusting the braking
action.
27. Apparatus according to any one of claims 1 to 26,
characterised in that the braking device comprises a
control and/or regulation device by means of which the
braking action can be automatically matched to the
pretensioning for winding-on.
28. Apparatus according to any one of claims 1 to 27,
characterised in that the roller drive unit is incorporated
into the open-loop and/or closed-loop control circuit of
the control and/or regulation unit and the roller drive
unit can be subjected to. open-loop and/or closed-loop
control for automatic matching to the predetermined
pretensioning for winding-on.

In an apparatus at a spinning room machine, especially a
card, carding machine, cleaner or the like, for drawing a
clothing onto a roller using a roller drive unit, which
apparatus comprises a drive motor arranged to be in drive
connection with the roller drive unit or with at least one
roller of the machine, the drive motor co-operates with a
speed-of-rotation adjustment device.
In order to allow, by simple means, automatic matching
of the actual value of the speed of rotation to a
prespecified value of the speed of rotation, the drive
motor co-operates with a closed-loop speed-of-rotation
control device which is incorporated into the control and
regulation device of the spinning room machine.

APPARATUS AT A SPINNING ROOM MACHINE FOR DRAWING A CLOTHING ONTO A ROLLER

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