CN214569491U

CN214569491U - Adopt servo drive's integrative cloth rewinder of pendulum is rolled up to drum

Info

Publication number: CN214569491U
Application number: CN202023165556.6U
Authority: CN
Inventors: 白镇宇
Original assignee: Comtech Xiamen Intelligent Control Technology Co Ltd
Current assignee: Comtech Xiamen Intelligent Control Technology Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-11-02
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses an adopt servo drive's integrative cloth rewinder of circle book pendulum belongs to the textile machinery field, including feeding mechanism, support work or material rest, pillar mechanism, tractive pendulum cloth mechanism, batching mechanism and electric cabinet, feeding mechanism fixes at pillar mechanism's top, and the support work or material rest is established in feeding mechanism's below, feeding mechanism's signal end, tractive pendulum cloth mechanism's signal end and batching mechanism's signal end respectively with the signal end electric connection of electric cabinet, according to the receipts material mode of difference, can set up tractive pendulum cloth mechanism or batching mechanism between feeding mechanism and support work or material rest to realize the swing and fold cloth ejection of compact or the rolling ejection of compact. The utility model discloses an adopt servo drive's integrative cloth rewinder of circle book pendulum is convenient for control the conveying speed of the integrative cloth rewinder of circle book pendulum reliably accurately, makes the cloth atress more balanced, guarantees that cloth transports the process more steady reliable, improves production efficiency and quality, and can receive the material mode according to the demand transform.

Description

Adopt servo drive's integrative cloth rewinder of pendulum is rolled up to drum

Technical Field

The utility model relates to the field of textile machinery, especially, relate to an adopt servo drive's integrative cloth rewinder of pendulum is rolled up to drum.

Background

The full-automatic numerical control multifunctional electronic thread-adjusting jacquard double-reverse-side circular weft knitting machine comprises a rack, a triangular mechanism, a jacquard device, a cloth rolling mechanism and a needle cylinder driving device, wherein the cloth rolling mechanism comprises a frame body, a rotary disc, a cloth rolling roller and a traction system, the frame body is fixed on a rotary shaft of the rotary disc, the traction system comprises a traction roller and a driven roller which is arranged in parallel with the traction roller, the cloth rolling torque motor and the traction torque motor are both fixed on the frame body, a belt of the cloth rolling torque motor drives the cloth rolling roller to rotate, a main shaft of the traction torque motor is fixedly provided with a synchronizing wheel, and the synchronizing wheel drives the traction roller of the traction system to rotate through a synchronous belt. However, the circular weft knitting machine winds the cloth through the cloth rolling device after the cloth is transmitted by the roller shaft, the rotating speed of each transmission roller is difficult to keep consistent, and the rotating speed of each cloth rolling roller cannot be automatically adjusted and changed along with the increase of the diameter of the cloth, so that the cloth is stressed unevenly, the problems of inconsistent cloth tightness, cloth dragging, cloth slipping, deformation and cracking and the like easily occur, the cloth transmission process is not stable and reliable enough, and the cloth rolling quality and the cloth rolling efficiency are reduced. Moreover, the drawing system is only used for driving the cloth, the receiving mode is single, and the cloth folding requirement of a user for arranging, folding and receiving the cloth is difficult to meet.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's defect, the utility model aims to solve the technical problem that an adopt servo drive's drum to roll up integrative batching machine of pendulum is proposed, adopt feeding mechanism, hold in the palm the work or material rest, prop mechanism, tractive pendulum cloth mechanism and batching mechanism combine range sensor's structure, and the servo control signal through each mechanism of electric cabinet linkage, be convenient for accurate control cylinder roll up the transfer rate of the integrative batching machine of pendulum reliably, make the cloth atress more balanced, guarantee that cloth transports the process more steady reliable, and the production efficiency and quality are improved, and can receive the material mode according to the demand transform.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a pair of adopt servo drive's integrative cloth rewinder of pendulum is rolled up to drum, including feeding mechanism, support the work or material rest, pillar mechanism, tractive pendulum cloth mechanism, batching mechanism and electric cabinet, feeding mechanism fixes at pillar mechanism's top, supports the work or material rest and establishes the below at feeding mechanism, feeding mechanism's signal end, tractive pendulum cloth mechanism's signal end and batching mechanism's signal end are connected with the signal end electric property of electric cabinet respectively, according to the material mode of receiving of difference, can set up tractive pendulum cloth mechanism or batching mechanism between feeding mechanism and support the work or material rest to realize the swing and fold cloth ejection of compact or the rolling ejection of compact.

The utility model discloses preferred technical scheme lies in, is fixed with distance measuring sensor in the pillar mechanism, and distance measuring sensor's signal end and electric cabinet's signal end electric connection, distance measuring sensor are located batching mechanism's below to measure around rolling up the cloth diameter change in batching mechanism.

The utility model discloses preferred technical scheme lies in, tractive pendulum cloth mechanism includes last roller assembly, lower roller assembly and drive assembly, goes up the roller assembly and fixes on drive assembly's outer wall, and drive assembly's signal end and electric cabinet's signal end electric connection, cloth are respectively around rolling up on last roller assembly and lower roller assembly, when drive assembly drives the lower roller assembly and is reciprocating motion, can be along with the lower roller assembly and do reciprocating motion after the tractive effect.

The utility model discloses preferred technical scheme lies in, the drive assembly includes transmission step motor, at least one roller train, the rack, guide holder and casing, transmission step motor fixes on the guide holder, the profile of tooth face of rack and the power input end of lower roller subassembly are connected with transmission step motor's power take off end transmission respectively, roller train and guide holder rotatable coupling, the roller train can be followed the axial of rack and be rolled, the rack is fixed in the casing, it fixes on the casing to go up the roller subassembly, lower roller subassembly and guide holder rotatable coupling, transmission step motor's signal end and the signal end electric connection of electric cabinet.

The utility model discloses preferred technical scheme lies in, goes up the roller assembly and includes at least one and goes up abutment roller and locating support, goes up abutment roller and locating support rotatable coupling, casing and pillar mechanism respectively with locating support looks rigid coupling.

The utility model discloses preferred technical scheme lies in, feeding mechanism includes feeding roller set and pay-off servo motor, and pay-off servo motor's power take off end is connected with the power input end transmission of feeding roller set, and pay-off servo motor fixes on prop mechanism, and pay-off servo motor's signal end and the signal end electric connection of electric cabinet.

The utility model discloses a preferred technical scheme lies in, batching mechanism includes batching roller set, batching servo motor and bullet top clamping device fix respectively in the prop mechanism, batching servo motor's power take off end is connected with the power input end transmission of batching roller set, the tip and the bullet top clamping device looks joint of batching roller set, batching servo motor's signal end and the signal end electric connection of electric cabinet, distance measuring sensor is located the below of batching roller set, change around the cloth diameter of rolling up on the batching roller set with the measurement.

The utility model has the advantages that:

the utility model provides an adopt servo driven drum to roll up integrative cloth rewinder of pendulum, feeding mechanism does the roll, conveys the next part with cloth. When an operator needs to receive materials in a swinging cloth stacking mode, the drawing and cloth placing mechanism is erected between the feeding mechanism and the material supporting frame, and can draw cloth and drive the cloth to swing back and forth, so that the cloth is collected on the material supporting frame in a swinging cloth stacking mode. When an operator needs to receive materials in a winding mode, the drawing and cloth placing mechanism is detached, the cloth rolling machine is arranged between the feeding mechanism and the material supporting frame in a framework mode, the cloth rolling mechanism rolls, and cloth is coiled on the cloth rolling mechanism from the feeding machine to form a coiled material. Wherein, feeding mechanism, batching mechanism all adopts the servo control mode to drive, the tractive is swung cloth mechanism and is adopted step signal control mode to drive, the servo control signal or the step control signal of each mechanism of operating personnel accessible electric cabinet linkage, the rotational speed of the above-mentioned part of accurate reliable control, guarantee the balanced adaptation of rotational speed between feeding mechanism and tractive pendulum cloth mechanism or between feeding mechanism and the batching mechanism, make the cloth atress more balanced, avoid or reduce cloth and skid, drag, the uneven and deformation fracture scheduling problem of atress, guarantee that cloth transports the process more steady reliable, the production efficiency and the quality are improved.

Drawings

Fig. 1 is a schematic view of an overall structure of a servo-driven circular drum rolling and swinging integrated cloth rolling machine according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a drawing and cloth swinging mechanism provided in an embodiment of the present invention;

fig. 3 is a schematic structural view of the assembly of the cloth winding mechanism and the support mechanism provided in the embodiment of the present invention.

In the figure:

1. a feeding mechanism; 11. a feeding roller set; 12. a feeding servo motor; 2. a material supporting frame; 3. a strut mechanism; 4. a cloth drawing and arranging mechanism; 41. an upper roll shaft assembly; 411. an upper support roller; 412. positioning the bracket; 42. a lower roller assembly; 43. a transmission assembly; 431. a step motor is driven; 432. a roller set; 433. a rack; 434. a guide seat; 435. a housing; 5. a cloth rolling mechanism; 51. a cloth roller set; 52. a cloth rolling servo motor; 53. a spring top clamping device; 6. an electric cabinet; 7. and a distance measuring sensor.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 3, the present embodiment provides a servo-driven cylindrical rolling and swinging integral cloth rolling machine. In order to facilitate accurate reliable control the transfer rate of the integrative cloth rewinder of cylinder roll pendulum, make the cloth atress more balanced, guarantee that the cloth transports the process more steady reliable, improve production efficiency and quality, and can receive the material mode according to the demand transform. Further, the servo-driven cylinder rolling and swinging integrated cloth rolling machine comprises a feeding mechanism 1, a material supporting frame 2, a supporting column mechanism 3, a traction cloth swinging mechanism 4, a cloth rolling mechanism 5 and an electric cabinet 6, wherein the feeding mechanism 1 is fixed at the top of the supporting column mechanism 3, the material supporting frame 2 is arranged below the feeding mechanism 1, a signal end of the traction cloth swinging mechanism 4 and a signal end of the cloth rolling mechanism 5 are respectively and electrically connected with a signal end of the electric cabinet 6, and the traction cloth swinging mechanism 4 or the cloth rolling mechanism 5 can be erected between the feeding mechanism 1 and the material supporting frame 2 according to different material receiving modes so as to realize swinging cloth stacking discharging or rolling discharging. When material is required to be received in a swinging cloth stacking mode, the drawing cloth placing mechanism 4 is erected between the feeding mechanism 1 and the material supporting frame 2, the drawing cloth placing mechanism 4 is detachably connected with the support column mechanism 3, and cloth is fed onto the drawing cloth placing mechanism 4 through the feeding mechanism 1 so as to be received on the material supporting frame 2 in a swinging cloth stacking mode; when the material needs to be collected in a winding mode, the cloth rolling mechanism 5 is erected between the feeding mechanism 1 and the material supporting frame 2, and the cloth is conveyed to the cloth rolling mechanism 5 through the feeding mechanism 1 so as to be wound and connected onto the cloth rolling mechanism 5 in the winding mode. The feeding mechanism 1 rolls to convey the cloth to the next component. When an operator needs to receive materials in a swinging cloth folding mode, the drawing cloth placing mechanism 4 is erected between the feeding mechanism 1 and the material supporting frame 2, and the drawing cloth placing mechanism 4 can draw cloth and drive the cloth to swing back and forth, so that the cloth is collected on the material supporting frame 2 in a swinging cloth folding mode. When an operator needs to receive materials in a winding mode, the drawing and cloth placing mechanism 4 is detached, the cloth rolling mechanism 5 is erected between the feeding mechanism 1 and the material supporting frame 2, the cloth rolling mechanism 5 rolls, and cloth is wound on the cloth rolling mechanism 5 in a looping mode from the feeding mechanism 1 to form a coiled material. Wherein, feeding mechanism 1, batching mechanism 5 all adopts the servo control mode to drive, the tractive is swung cloth mechanism 4 and is adopted step signal control mode to drive, the servo control signal or the step control signal of each mechanism of operating personnel accessible electric cabinet 6 linkage, the rotational speed of the above-mentioned part of accurate reliable control, guarantee the balanced adaptation of rotational speed between feeding mechanism 1 and tractive pendulum cloth mechanism 4 or between feeding mechanism 1 and batching mechanism 5, make the cloth atress more balanced, avoid or reduce cloth and skid, drag, the atress is uneven and the deformation fracture scheduling problem, guarantee that the cloth transports the process more steady reliable, and the production efficiency and the quality are improved. Along with the increase of the number of the cloth turns, the diameter of the cloth rolling can be gradually increased, and the cloth rolling speed of the cloth rolling mechanism 5 needs to be gradually reduced to realize uniform cloth rolling under the premise that the running speed of the feeding mechanism 1 is not changed. Every time the cloth is rolled for one circle by the cloth rolling mechanism 5, the electric cabinet 6 recalculates the operation rotation angle A of the servo motor of the cloth rolling mechanism 5, controls the servo motor of the cloth rolling mechanism 5 to operate at a corresponding angle, can realize reliable cloth rolling, avoids the problems of cloth dragging, overlapping, slipping and the like, ensures that the cloth rolling is stable at a constant speed, and improves the cloth rolling quality. Through the process, the conveying speed of the cylindrical rolling and swinging integrated cloth rolling machine is controlled accurately and reliably, so that the cloth is stressed more evenly, the cloth conveying process is guaranteed to be more stable and reliable, the production efficiency and the quality are improved, and the material receiving mode can be changed according to the requirement.

Preferably, a distance measuring sensor 7 is fixed on the support mechanism 3, a signal end of the distance measuring sensor 7 is electrically connected with a signal end of the electric cabinet 6, and the distance measuring sensor 7 is located below the cloth rolling mechanism 5 to measure the diameter change of cloth wound on the cloth rolling mechanism 5. Along with the increase of the number of the cloth turns, the diameter of the cloth rolling can be gradually increased, and the cloth rolling speed of the cloth rolling mechanism 5 needs to be gradually reduced to realize uniform cloth rolling under the premise that the running speed of the feeding mechanism 1 is not changed. Every batching of batching mechanism 5 is a circle, just obtain the diameter H of the batching cloth that winds on the current batching mechanism 5 through range sensor 7 remeasurement, the operation angle degree calculation mode of motor is that A equals (360X L)/(Pi X H), every batching of batching mechanism 5 is a circle, reacquire the dynamic numerical value of H after, recalculate angle A, and the corresponding angle of servo motor operation of control batching mechanism 5 can realize reliable batching, avoid appearing cloth and pull, overlap, the scheduling problem skids, guarantee that the batching is at the uniform velocity steady, improve the batching quality.

Preferably, tractive pendulum cloth mechanism 4 includes upper roller assembly 41, lower roller assembly 42 and drive assembly 43, and upper roller assembly 41 is fixed on the outer wall of drive assembly 43, and the signal end of drive assembly 43 and electric cabinet 6's signal end electric connection, and cloth is around rolling up respectively on upper roller assembly 41 and lower roller assembly 42, and when drive assembly 43 drove lower roller assembly 42 and is reciprocating motion, cloth can be along with lower roller assembly 42 and do reciprocating motion after receiving the tractive effect. After the upper roller assembly 41 transfers the cloth to the lower roller assembly 42, the transmission assembly 43 can drive the lower roller assembly 42 to move back and forth so as to drive the cloth to swing back and forth, so that the cloth can be swung, folded and received. Wherein, drive assembly 43 adopts step-by-step drive, the sexual valence relative altitude, and speed control is accurate reliable, guarantees that the pendulum cloth process is more steady reliable. Through the process, the cloth swinging and drawing mechanism can automatically draw the cloth to realize swinging, folding and collecting, and the transmission process is more stable and reliable. The user can add this tractive pendulum cloth mechanism 4 on the integrative cloth rewinder of drum book pendulum according to the demand to make the integrative cloth rewinder of drum book pendulum receive the material except realizing that the batching receives, still can realize putting the folding receipts of cloth, cloth receives the material mode abundantly more various, satisfies user's cloth and receive and release the demand.

Preferably, the transmission assembly 43 includes a transmission stepping motor 431, at least one roller set 432, a rack 433, a guide seat 434 and a machine shell 435, the transmission stepping motor 431 is fixed on the guide seat 434, a tooth surface of the rack 433 and a power input end of the lower roller assembly 42 are respectively in transmission connection with a power output end of the transmission stepping motor 431, the roller set 432 is rotatably connected with the guide seat 434, the roller set 432 can roll along an axial direction of the rack 433, the rack 433 is fixed in the machine shell 435, the upper roller assembly 41 is fixed on the machine shell 435, the lower roller assembly 42 is rotatably connected with the guide seat 434, and a signal end of the transmission stepping motor 431 is electrically connected with a signal end of the electric cabinet 6. The power output end of the transmission stepping motor 431 is meshed with the toothed surface of the rack 433 through a gear, and when the power output end of the transmission stepping motor 431 rotates, the guide seat 434 can be driven to be meshed and driven along the rack 433, so that the lower roller assembly 42 is driven to move in a reciprocating mode, and cloth is driven to swing. Wherein, the roller set 432 is jointed with the upper end surface of the rack 433 and rolls along the upper end surface of the rack 433, so as to play a guiding role and ensure that the transmission process is more stable and reliable. Chassis 435 functions as a locating feature and a guard.

Preferably, the upper roller assembly 41 includes at least one upper supporting roller 411 and a positioning bracket 412, the upper supporting roller 411 and the positioning bracket 412 are rotatably connected, and the housing 435 and the pillar mechanism 3 are respectively and fixedly connected to the positioning bracket 412. The upper support roller 411 can rotate on the positioning bracket 412 to drive the cloth, and the positioning bracket 412 is used for positioning and assembling the upper support roller 411. The upper backup roller 411 is easily assembled with the column mechanism 3 by providing the positioning bracket 412 by manually adjusting the position of the positioning bracket 412 on the column mechanism 3 to adjust the height of the upper backup roller 411.

Preferably, the feeding mechanism 1 comprises a feeding roller group 11 and a feeding servo motor 12, a power output end of the feeding servo motor 12 is in transmission connection with a power input end of the feeding roller group 11, the feeding servo motor 12 is fixed on the support mechanism 3, and a signal end of the feeding servo motor 12 is electrically connected with a signal end of the electric cabinet 6. The power output end of the feeding servo motor 12 rotates to drive the feeding roller set 11 to rotate. Wherein, pay-off servo motor 12 adopts the servo control mode, and the operating personnel of being convenient for passes through the rotational speed of electric cabinet 6 accurate control pay-off servo motor 12 to keep the tension that cloth received more balanced, guarantee that cloth conveying is more steady reliable.

Preferably, the batching mechanism 5 comprises a batching roller group 51, a batching servo motor 52 and an ejection clamping device 53, the batching servo motor 52 and the ejection clamping device 53 are respectively fixed on the pillar mechanism 3, the power output end of the batching servo motor 52 is in transmission connection with the power input end of the batching roller group 51, the end part of the batching roller group 51 is in clamping connection with the ejection clamping device 53, the signal end of the batching servo motor 52 is electrically connected with the signal end of the electric cabinet 6, and the distance measuring sensor 7 is positioned below the batching roller group 51 so as to measure the diameter change of cloth wound on the batching roller group 51. The power output end of the cloth rolling servo motor 52 rotates to drive the cloth rolling roller group 51 to rotate. Wherein, batching servo motor 52 adopts the servo control mode, and the operating personnel of being convenient for passes through the accurate rotational speed of controlling batching servo motor 52 of electric cabinet 6 to the tension that keeps cloth to receive is more balanced, guarantees that cloth conveying is more steady reliable. The spring top clamping device 53 is used for clamping and positioning the cloth rolling roller set 51, and the cloth rolling roller set 51 is conveniently disassembled and assembled.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. The utility model provides an adopt servo drive's integrative cloth rewinder of pendulum is rolled up to drum which characterized in that:

comprises a feeding mechanism (1), a material supporting frame (2), a supporting column mechanism (3), a drawing and cloth placing mechanism (4), a cloth rolling mechanism (5) and an electric cabinet (6);

the feeding mechanism (1) is fixed at the top of the support mechanism (3), the material supporting frame (2) is arranged below the feeding mechanism (1), and a signal end of the feeding mechanism (1), a signal end of the drawing and cloth placing mechanism (4) and a signal end of the cloth rolling mechanism (5) are respectively and electrically connected with a signal end of the electric cabinet (6);

according to different material receiving modes, the drawing cloth placing mechanism (4) or the cloth rolling mechanism (5) can be erected between the feeding mechanism (1) and the material supporting frame (2) so as to realize swinging cloth stacking discharging or winding discharging.

2. The servo-driven cylindrical rolling and swinging integrated cloth rolling machine according to claim 1, characterized in that:

a distance measuring sensor (7) is fixed on the strut mechanism (3);

the signal end of the distance measuring sensor (7) is electrically connected with the signal end of the electric cabinet (6), and the distance measuring sensor (7) is located below the cloth rolling mechanism (5) to measure the diameter change of cloth wound on the cloth rolling mechanism (5).

3. The servo-driven cylindrical rolling and swinging integrated cloth rolling machine according to claim 1, characterized in that:

the drawing and cloth swinging mechanism (4) comprises an upper roller assembly (41), a lower roller assembly (42) and a transmission assembly (43);

the upper roller assembly (41) is fixed on the outer wall of the transmission assembly (43), and the signal end of the transmission assembly (43) is electrically connected with the signal end of the electric cabinet (6);

cloth is respectively wound on the upper roller shaft assembly (41) and the lower roller shaft assembly (42), and when the transmission assembly (43) drives the lower roller shaft assembly (42) to do reciprocating movement, the cloth can do reciprocating swing along with the lower roller shaft assembly (42) after being pulled.

4. The servo-driven cylindrical rolling and swinging integrated cloth rolling machine according to claim 3, characterized in that:

the transmission assembly (43) comprises a transmission stepping motor (431), at least one roller group (432), a rack (433), a guide seat (434) and a machine shell (435);

the transmission stepping motor (431) is fixed on the guide seat (434), the tooth-shaped surface of the rack (433) and the power input end of the lower roller assembly (42) are respectively in transmission connection with the power output end of the transmission stepping motor (431), the roller set (432) is in rotatable connection with the guide seat (434), the roller set (432) can roll along the axial direction of the rack (433), the rack (433) is fixed in the machine shell (435), the upper roller assembly (41) is fixed on the machine shell (435), the lower roller assembly (42) is in rotatable connection with the guide seat (434), and the signal end of the transmission stepping motor (431) is electrically connected with the signal end of the electric cabinet (6).

5. The servo-driven cylindrical rolling and swinging integrated cloth rolling machine according to claim 4, characterized in that:

the upper roller assembly (41) comprises at least one upper support roller (411) and a positioning bracket (412);

the upper supporting roller (411) is rotatably connected with the positioning bracket (412), and the machine shell (435) and the supporting column mechanism (3) are fixedly connected with the positioning bracket (412) respectively.

6. The servo-driven cylindrical rolling and swinging integrated cloth rolling machine according to claim 1, characterized in that:

the feeding mechanism (1) comprises a feeding roller set (11) and a feeding servo motor (12);

the power output end of the feeding servo motor (12) is in transmission connection with the power input end of the feeding roller group (11), the feeding servo motor (12) is fixed on the support mechanism (3), and the signal end of the feeding servo motor (12) is electrically connected with the signal end of the electric cabinet (6).

7. The servo-driven cylindrical rolling and swinging integrated cloth rolling machine according to claim 2, characterized in that:

the cloth rolling mechanism (5) comprises a cloth rolling roller group (51), a cloth rolling servo motor (52) and a spring top clamping device (53);

the cloth rolling servo motor (52) and the spring top clamping device (53) are respectively fixed on the strut mechanism (3), the power output end of the cloth rolling servo motor (52) is in transmission connection with the power input end of the cloth rolling roller group (51), the end part of the cloth rolling roller group (51) is clamped with the spring top clamping device (53), and the signal end of the cloth rolling servo motor (52) is electrically connected with the signal end of the electric cabinet (6);

the distance measuring sensor (7) is positioned below the cloth roller group (51) to measure the diameter change of cloth wound on the cloth roller group (51).