A dynamic adjustment of traction force roller device and method thereof

Abstract

The application discloses a kind of traction dynamic adjustment's roller device and method, belong to the technical field of braiding machine, including support plate and the two rollers being arranged between support plate;Driving roller and driven roller are all included driving rod, driven rod, roller rubber tube, baffle, rotating shaft and traction adjustable support mechanism;Support plate is provided with roll gap adjusting mechanism, and roll gap adjusting mechanism includes two groups of adjusting components installed on support plate and synchronous component installed on adjusting component;Through the above mode, the tensioning degree of roller rubber tube can be adjusted by changing the distance of the axis of driving rod and driven rod through traction adjustable support mechanism, so as to realize the dynamic adjustment of the traction of roller, so that the traction demand of different material fabrics is adapted to roller, and through the way that roller rubber tube is tensioned through traction adjustable support mechanism after being sleeved, the replacement difficulty of roller rubber tube can be effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of knitting machines, specifically to a roller device and method for dynamically adjusting traction force. Background Technology

[0002] Rollers are an important component of computerized flat knitting machines, responsible for guiding and tensioning the yarn to ensure the smoothness and quality of the weave.

[0003] Chinese patent CN110306285B discloses a roller device for a computerized flat knitting machine. This roller device includes small rollers and large rollers, with a pressing sleeve movably connected between them. In operation, a servo motor rotates forward to drive the flattening rollers to smooth the fabric, and the servo motor rotates in reverse to drive the pressing sleeve to press the fabric. However, this roller device still has the following problems: 1. Different fabric materials require different traction forces to achieve stable transmission, and fabrics of different thicknesses also have different requirements for roller spacing; 2. When replacing the roller hose with a new one, the driven rod at the eccentric part of the roller needs to be oiled and then hammered into the inside of the roller hose to make the roller form a triangular structure similar to a flat cam. However, in order to maintain the tension of the roller hose, it is inconvenient to hammer the driven rod into the inside of the roller hose, and there is also a risk that the driven rod will damage the roller hose.

[0004] Based on this, the present invention designs a roller device and method for dynamic adjustment of traction force to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a roller device and method for dynamically adjusting traction force.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A roller device for dynamically adjusting traction force includes a support plate and two rollers disposed between the support plate; The two rollers are respectively set as the driving roller and the driven roller. The driving roller and the driven roller have the same structure, both including a driving rod, a driven rod, a roller hose, a baffle, a rotating shaft and a traction force adjustable support mechanism. The driven rod and the driving rod abut against the upper and lower ends of the traction force adjustable support mechanism, which is used to adjust the distance between the axes of the driving rod and the driven rod. The rotating shaft is fixedly connected to the driving rod, and the axes of the rotating shaft and the driving rod are collinear; The roller hose is wound around the outside of the driving rod and the driven rod; The left and right ends of the rotating shaft are symmetrically equipped with baffles. The rotating shaft is used to prevent the active rod, the driven rod and the adjustable traction support mechanism from moving along the axial direction of the rotating shaft. The support plate is equipped with a roller gap adjustment mechanism, which includes two sets of adjustment components mounted on the support plate and a synchronization component mounted on the adjustment components. Two sets of adjustment components are used to connect the active roller to the support plate and the driven roller to the support plate, respectively, and to adjust the distance between the active roller and the driven roller; The synchronization component is installed on the adjustment component. The synchronization component is used to drive the rotation shafts of the active roller and the driven roller to rotate synchronously in opposite directions to maintain the traction effect of the rollers on the fabric. The support plate is also equipped with a roller cleaning alarm mechanism for cleaning the active and driven rollers and for promptly alarming and stopping the machine when the rollers are wrapped with fabric.

[0007] Furthermore, the adjustable traction support mechanism includes a fixed support, a movable support, a limiting groove, a traction force adjusting screw, an upper inclined block, and a lower inclined block. The fixed support has a limiting groove arranged axially along the rotation axis, and the movable support is slidably connected to the limiting groove. The traction force adjusting screw is located inside the limiting groove, and the traction force adjusting screw is rotatably connected to the fixed support through a bearing. Several inclined blocks are evenly and uniformly fixedly installed on the lower side of the movable support along the length of the movable support, and the side wall of the movable support is slidably connected to the inner wall of the limiting groove. Several lower inclined blocks, each corresponding to an upper inclined block, are threadedly connected to a traction force adjusting screw via threaded sleeves. The sidewalls of the lower inclined blocks are slidably connected to the inner wall of the limiting groove, and the upper inclined blocks are slidably connected to each other.

[0008] Furthermore, the adjustment assembly includes an adjustment lever, a first fixed block, a second fixed block, and an angle adjustment screw. The two adjustment levers are symmetrically distributed on the left and right sides of the support plate. One end of the two adjustment levers is hinged to the support plate, and the inner side of the other end of the two adjustment levers is rotatably connected to the left and right ends of the rotating shaft, respectively. The first fixed block is hinged to the support plate, and the second fixed block is hinged to the middle of the adjusting lever. The angle adjusting screw is rotatably connected to the first fixed block via a bearing, and the angle adjusting screw is threadedly connected to the second fixed block via a threaded sleeve.

[0009] Furthermore, the synchronization component includes a drive gear, a first connecting rod, a second connecting rod, a first synchronization gear, and a second synchronization gear; The two drive gears are fixedly connected to the rotating shafts of the driving roller and the driven roller, respectively; One end of the first link is hinged to the rotation axis of the driving roller, one end of the second link is hinged to the rotation axis of the driven roller, and the other end of the first link is hinged to the other end of the second link. The first synchronous gear is rotatably mounted in the middle of the first connecting rod, and the second synchronous gear is rotatably mounted at the end of the first connecting rod away from the drive gear. The rotation axis of the second synchronous gear is collinear with the rotation axis of the hinged end of the first and second connecting rods. The first synchronizing gear meshes with the drive gear on the active roller side and the second synchronizing gear, while the second synchronizing gear meshes with the drive gear on the driven roller side.

[0010] Furthermore, the synchronization component also includes a first synchronization shaft, a second synchronization shaft, a first transmission gear, and a second transmission gear; The first synchronous shaft is rotatably connected to the adjusting levers on both sides of the active roller, and the rotation axis of the first synchronous shaft is collinear with the rotation axis of the adjusting lever and the hinge end of the support plate; The second synchronous shaft is rotatably connected to the adjusting levers on both sides of the driven roller, and the rotation axis of the second synchronous shaft is collinear with the rotation axis of the adjusting lever and the hinge end of the support plate; A first transmission gear is rotatably mounted in the middle of the adjusting lever on one side of the active roller. A second transmission gear is fixedly connected to the first synchronous shaft. The first transmission gear meshes with the drive gear on one side of the active roller and the second transmission gear.

[0011] Furthermore, the roller cleaning alarm mechanism includes a blade holder, a cleaning scraper, a tension spring, a swing shaft, and an alarm assembly. Two swing shafts are symmetrically fixedly installed on the front and rear sides of the inner wall of the support plate. A blade holder is rotatably mounted on the swing shaft, and a cleaning scraper for cleaning the surface of the roller hose is fixedly installed on the top of the blade holder. A tension spring is fixedly installed between the two blade holders, so that the cleaning scraper abuts against the roller hose. The alarm assembly is installed on the inner wall of the support plate.

[0012] Furthermore, the alarm assembly includes a fixing block and a sensor. Fixing blocks are symmetrically arranged on both sides of each tool holder. One end of the fixing block is fixedly connected to the support plate, and the other end of the fixing block is provided with a sensor for sensing the position of the tool holder.

[0013] To better achieve the objectives of this invention, the present invention also provides a method for using a roller device with dynamically adjustable traction force, comprising the following steps: Step 1: Rotate the traction force adjusting screw to move the lower inclined block along the rotation axis under the limiting action of the limiting groove. This changes the distance between the axes of the driving rod and the driven rod through the cooperation of the upper and lower inclined blocks, thereby adjusting the tension of the roller hose. Step 2: Rotate the angle adjustment screw to adjust the center distance between the first and second fixed blocks, so that the roller swings between the support plates through the adjustment lever to adjust the distance between the driving roller and the driven roller; Step 3: Under the action of the synchronization component, the roller hoses of the driving roller and the driven roller always rotate in opposite directions synchronously to perform the traction operation on the fabric.

[0014] Compared with the prior art, the advantages of this invention are as follows: 1. The tension of the roller hose can be adjusted by changing the distance between the axes of the active rod and the driven rod through the adjustable traction support mechanism. When the distance between the axes of the active rod and the driven rod increases, the traction force of the roller hose on the fabric increases, and vice versa. This achieves dynamic adjustment of the traction force of the roller, making the roller adaptable to the traction requirements of different fabric materials. Furthermore, by tightening the roller hose through the adjustable traction support mechanism after the roller hose is installed, the difficulty of replacing the roller hose can be effectively reduced. 2. The active roller and driven roller can be controlled separately by two sets of adjustment components, so as to adjust the distance between the active roller and driven roller, so that the roller can adapt to the traction requirements of fabrics of different thicknesses. Furthermore, the roller hoses of the active roller and driven roller are always driven to rotate synchronously in opposite directions by the synchronization component, ensuring uniform traction force. 3. Under the action of the tension spring, the cleaning scraper is always in contact with the roller tube, constantly scraping off the deposits on the roller tube to ensure the production quality of the fabric; when there are more deposits on the roller tube, the friction between the cleaning scraper and the roller tube will increase, and the scraper holder will swing outward from the roller. When the amount of residue on the roller hose exceeds the set value, the cutter holder will trigger the sensor to stop the machine and issue an alarm, allowing the operator to check and clean the roller hose in time, thereby ensuring the stable product quality of the flat knitting machine and preventing damage to the machine. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 A three-dimensional traction force dynamically adjusting roller device of the present invention Figure 1 ; Figure 2 This is a front view of a roller device for dynamic adjustment of traction force according to the present invention; Figure 3A three-dimensional traction force dynamically adjusting roller device of the present invention Figure 2 ; Figure 4 This is a right view of a roller device for dynamic adjustment of traction force according to the present invention; Figure 5 For along Figure 2 A sectional view along the AA direction; Figure 6 The structural three-dimensional representation of the adjustable traction support mechanism of the present invention. Figure 1 ; Figure 7 The structural three-dimensional representation of the adjustable traction support mechanism of the present invention. Figure 2 .

[0017] The labels in the diagram represent: 1. Support plate; 2. Roller; 2A. Driven roller; 2B. Driven roller; 21. Drive rod; 22. Driven rod; 23. Roller hose; 24. Baffle; 25. Rotating shaft; 26. Adjustable traction support mechanism; 261. Fixed support; 262. Movable support; 263. Limiting groove; 264. Traction adjusting screw; 265. Upper inclined block; 266. Lower inclined block; 3. Roller cleaning alarm mechanism; 31. Blade holder; 32. Cleaning scraper; 33. Tension spring; 34. Swing shaft; 3 5. Fixed block; 36. Sensor; 4. Roller gap adjustment mechanism; 41. Adjustment component; 411. Adjustment lever; 412. First fixed block; 413. Second fixed block; 414. Angle adjustment screw; 42. Synchronization component; 421. Drive gear; 422. First connecting rod; 423. Second connecting rod; 424. First synchronous gear; 425. Second synchronous gear; 426. First synchronous shaft; 427. Second synchronous shaft; 428. First transmission gear; 429. Second transmission gear. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0020] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-7A roller device for dynamic adjustment of traction force includes a support plate 1 and two rollers 2 disposed between the support plate 1; The two rollers 2 are respectively set as driving roller 2A and driven roller 2B. Driving roller 2A and driven roller 2B have the same structure, both including driving rod 21, driven rod 22, roller hose 23, baffle 24, rotating shaft 25 and traction force adjustable support mechanism 26. Driven rod 22 and driving rod 21 abut against the upper and lower ends of traction force adjustable support mechanism 26 respectively. Traction force adjustable support mechanism 26 is used to adjust the distance between the axes of driving rod 21 and driven rod 22. The rotating shaft 25 is fixedly connected to the driving rod 21, and the axes of the rotating shaft 25 and the driving rod 21 are collinear; Roller hose 23 is wound around the outside of drive rod 21 and driven rod 22; Baffles 24 are symmetrically arranged at the left and right ends of the rotating shaft 25. The rotating shaft 25 is used to block the active rod 21, the driven rod 22 and the traction force adjustable support mechanism 26 from moving axially along the rotating shaft 25. The rotation of the drive shaft 25 can drive the drive rod 21. With the cooperation and support of the drive rod 21 and driven rod 22 at both ends of the adjustable traction force bracket mechanism 26, the roller hose 23 rotates. The two roller hoses 23 cooperate to achieve the traction effect on the fabric. A roller gap adjustment mechanism 4 is provided on the support plate 1. The roller gap adjustment mechanism 4 includes two sets of adjustment components 41 installed on the support plate 1 and a synchronization component 42 installed on the adjustment components 41. The two sets of adjustment components 41 are used to control the connection between the active roller 2A and the support plate 1 and the connection between the driven roller 2B and the support plate 1, respectively. The adjustment components 41 can also control the roller 2 to swing, thereby adjusting the gap between the active roller 2A and the driven roller 2B. The synchronization component 42 is installed on the adjustment components 41. The synchronization component 42 is used to drive the rotation shafts 25 of the active roller 2A and the driven roller 2B to rotate synchronously in opposite directions to maintain the traction effect of the roller 2 on the fabric. The support plate 1 is also equipped with a roller cleaning alarm mechanism 3 for cleaning the active roller 2A and the driven roller 2B and for promptly alarming and stopping the machine when the roller 2 is wrapped with fabric.

[0021] In this invention, the tension of the roller hose 23 can be adjusted by changing the distance between the axes of the active rod 21 and the driven rod 22 through the adjustable traction support mechanism 26. When the distance between the axes of the active rod 21 and the driven rod 22 increases, the traction force of the roller hose 23 on the fabric increases, and vice versa. This achieves dynamic adjustment of the traction force of the roller 2, making the roller 2 adapt to the traction requirements of different fabric materials. When replacing the roller hose 23, the distance between the axes of the driving rod 21 and the driven rod 22 can be reduced by the adjustable traction support mechanism 26, so that the roller hose 23 can be easily fitted onto the outside of the driving rod 21 and the driven rod 22. After the roller hose 23 is fitted, the adjustable traction support mechanism 26 can be used to tighten the roller hose 23, thereby effectively reducing the difficulty of replacing the roller hose 23 and reducing the possibility of damaging the roller hose 23 when the driven rod 22 is knocked into the inside of the roller hose 23 due to the large friction between the driven rod 22 and the roller hose 23 during assembly. The two sets of adjustment components 41 can control the movement of the active roller 2A and the driven roller 2B respectively, so as to adjust the distance between the active roller 2A and the driven roller 2B, allowing the roller 2 to adapt to the traction requirements of fabrics of different thicknesses. Furthermore, the roller hoses 23 of the active roller 2A and the driven roller 2B are always driven to rotate synchronously in opposite directions by the synchronization component 42, ensuring uniform traction force.

[0022] The adjustable traction force support mechanism 26 includes a fixed support 261, a movable support 262, a limiting groove 263, a traction force adjusting screw 264, an upper inclined block 265, and a lower inclined block 266. The fixed support 261 has a limiting groove 263 axially arranged along the rotation axis 25. The movable support 262 is slidably connected to the limiting groove 263. The traction force adjusting screw 264 is located inside the limiting groove 263 and is rotatably connected to the fixed support 261 through a bearing. Several inclined blocks 265 are evenly and uniformly fixedly installed on the lower side of the movable bracket 262 along the length direction of the movable bracket 262, and the side wall of the movable bracket 262 is slidably connected to the inner wall of the limiting groove 263. Several lower inclined blocks 266, each corresponding to an upper inclined block 265, are threadedly connected to a traction force adjusting screw 264 via threaded sleeves. The sidewalls of the lower inclined blocks 266 are slidably connected to the inner wall of the limiting groove 263, and the upper inclined blocks 265 are slidably connected to each other. In this invention, the active rod 21, driven rod 22, fixed bracket 261 and movable bracket 262 are first assembled and then a roller hose 23 is sleeved on its outer side. Then, baffles 24 are installed at both ends of the rotating shaft 25 to limit the components inside it. Subsequently, rotating the traction force adjusting screw 264 allows the lower inclined block 266 to move along the axis of the rotating shaft 25 under the limiting action of the limiting groove 263. Thus, the cooperation of the upper inclined block 265 and the lower inclined block 266 changes the distance between the axes of the active rod 21 and the driven rod 22, thereby achieving precise control of the tension of the roller hose 23.

[0023] The adjustment assembly 41 includes an adjustment lever 411, a first fixing block 412, a second fixing block 413, and an angle adjustment screw 414. The two adjustment levers 411 are symmetrically distributed on the left and right sides of the support plate 1. One end of the two adjustment levers 411 is hinged to the support plate 1, and the inner side of the other end of the two adjustment levers 411 is rotatably connected to the left and right ends of the rotating shaft 25, respectively. The first fixing block 412 is hinged to the support plate 1, and the second fixing block 413 is hinged to the middle of the adjusting swing rod 411. The angle adjusting screw 414 is rotatably connected to the first fixed block 412 via a bearing, and the angle adjusting screw 414 is threadedly connected to the second fixed block 413 via a threaded sleeve. The synchronization assembly 42 includes a drive gear 421, a first connecting rod 422, a second connecting rod 423, a first synchronization gear 424, a second synchronization gear 425, a first synchronization shaft 426, a second synchronization shaft 427, a first transmission gear 428, and a second transmission gear 429. The two drive gears 421 are fixedly connected to the rotation shafts 25 of the driving roller 2A and the driven roller 2B, respectively. One end of the first link 422 is hinged to the rotation shaft 25 of the driving roller 2A, one end of the second link 423 is hinged to the rotation shaft 25 of the driven roller 2B, and the other end of the first link 422 is hinged to the other end of the second link 423. The first synchronizing gear 424 is rotatably mounted in the middle of the first connecting rod 422, and the second synchronizing gear 425 is rotatably mounted at the end of the first connecting rod 422 away from the drive gear 421. The rotation axis of the second synchronizing gear 425 is collinear with the rotation axis of the hinged end of the first connecting rod 422 and the second connecting rod 423. The first synchronous gear 424 is meshed with the drive gear 421 on the side of the driving roller 2A and the second synchronous gear 425. The second synchronous gear 425 is meshed with the drive gear 421 on the side of the driven roller 2B. The first synchronous shaft 426 is rotatably connected to the adjusting levers 411 on both sides of the active roller 2A, and the rotation axis of the first synchronous shaft 426 is collinear with the rotation axis of the adjusting levers 411 and the hinged end of the support plate 1. The second synchronous shaft 427 is rotatably connected to the adjusting levers 411 on both sides of the driven roller 2B, and the rotation axis of the second synchronous shaft 427 is collinear with the rotation axis of the adjusting levers 411 and the hinged end of the support plate 1. A first transmission gear 428 is rotatably mounted in the middle of the adjusting lever 411 on one side of the active roller 2A. A second transmission gear 429 is fixedly connected to the first synchronous shaft 426. The first transmission gear 428 is meshed with the drive gear 421 and the second transmission gear 429 on one side of the active roller 2A. In this invention, the center distance between the first fixed block 412 and the second fixed block 413 can be changed by rotating the lead screw 414, so that the roller 2 swings between the support plate 1 by adjusting the swing arm 411, thereby achieving precise adjustment of the distance between the active roller 2A and the driven roller 2B. During the adjustment process, the rotation centers of the drive gear 421, the first transmission gear 428, and the second transmission gear 429 on the active roller 2A side are collinear on the adjusting lever 411, so that the drive gear 421, the first transmission gear 428, and the second transmission gear 429 always maintain the meshing effect. The rotation centers of the drive gear 421, the first synchronous gear 424, and the second synchronous gear 425 on one side of the active roller 2A are collinear on the first connecting rod 422, so that the drive gear 421, the first synchronous gear 424, and the second synchronous gear 425 always maintain a meshing effect. The rotation centers of the drive gear 421 and the second synchronous gear 425 on the driven roller 2B side are collinear on the second connecting rod 423, so that the drive gear 421 and the second synchronous gear 425 always maintain the meshing effect. Thus, during the adjustment of the distance between the driving roller 2A and the driven roller 2B, by simply inputting power to the first synchronous shaft 426, the rotating shafts 25 of the driving roller 2A and the driven roller 2B can always rotate synchronously in opposite directions, maintaining a uniform traction effect on the fabric. Furthermore, the adjustment method for the distance between the driving roller 2A and the driven roller 2B is simple and easy to operate.

[0024] Example 2: In some embodiments, such as Figure 5 and Figure 7 As shown, in a preferred embodiment of the present invention, the roller cleaning alarm mechanism 3 includes a blade holder 31, a cleaning scraper 32, a tension spring 33, a swing shaft 34, a fixing block 35, and a sensor 36. Two swing shafts 34 are symmetrically fixedly installed on the front and rear sides of the inner wall of the support plate 1. The blade holder 31 is rotatably mounted on the swing shaft 34. The top of the blade holder 31 is fixedly mounted with a cleaning scraper 32 for cleaning the surface of the roller hose 23. A tension spring 33 is fixedly installed between the two blade holders 31, and the blade holders 31 cause the cleaning scraper 32 to abut against the roller hose 23. Each tool holder 31 has a fixing block 35 symmetrically arranged on both sides. One end of the fixing block 35 is fixedly connected to the support plate 1, and the other end of the fixing block 35 is provided with a sensor 36 for sensing the position of the tool holder 31. In this invention, the cleaning scraper 32 is always in contact with the roller tube 23 under the action of the tension spring 33, and continuously scrapes off the deposits on the roller tube 23 to ensure the production quality of the fabric. When there are more deposits on the roller tube 23, the friction between the cleaning scraper 32 and the roller tube 23 will increase, and the blade holder 31 will swing outward from the roller 2. When the amount of deposits on the roller hose 23 exceeds the set value, the cutter holder 31 will trigger the sensor 36 to contact and stop the machine, and issue an alarm. This allows the operator to check the roller hose 23 in time and clean it, thereby ensuring the stable product quality of the flat knitting machine and preventing damage to the machine.

[0025] Example 3: In some embodiments, such as Figures 1-7 As shown, in a preferred embodiment of the present invention, a method of using a roller device for dynamically adjusting traction force includes the following steps: Step 1: Rotate the traction force adjusting screw 264 to make the lower inclined block 266 move along the axis of the rotating shaft 25 under the limiting action of the limiting groove 263. In this way, the tension of the roller hose 23 is adjusted by changing the distance between the axes of the driving rod 21 and the driven rod 22 under the cooperation of the upper inclined block 265 and the lower inclined block 266. Step 2: Rotate the angle adjustment screw 414 to adjust the center distance between the first fixed block 412 and the second fixed block 413, so that the roller 2 swings between the support plate 1 by adjusting the swing arm 411 to adjust the distance between the active roller 2A and the driven roller 2B. Step 3: Under the action of the synchronization component 42, the roller hoses 23 of the driving roller 2A and the driven roller 2B always rotate synchronously in opposite directions to perform traction work on the fabric.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A roller device for dynamically adjusting traction force, comprising a support plate (1) and two rollers (2) disposed between the support plate (1), characterized in that: The two rollers (2) are respectively set as an active roller (2A) and a driven roller (2B). The active roller (2A) and the driven roller (2B) have the same structure, including an active rod (21), a driven rod (22), a roller hose (23), a baffle (24), a rotating shaft (25) and a traction force adjustable support mechanism (26). The driven rod (22) and the active rod (21) abut against the upper and lower ends of the traction force adjustable support mechanism (26) respectively. The traction force adjustable support mechanism (26) is used to adjust the distance between the axes of the active rod (21) and the driven rod (22). The rotating shaft (25) is fixedly connected to the driving rod (21), and the axes of the rotating shaft (25) and the driving rod (21) are collinear; Roller hose (23) is wound around the outside of the driving rod (21) and the driven rod (22); Baffles (24) are symmetrically arranged at the left and right ends of the rotating shaft (25). The baffles (24) are used to block the active rod (21), the driven rod (22) and the traction adjustable support mechanism (26) from moving axially along the rotating shaft (25). A roller gap adjustment mechanism (4) is provided on the support plate (1). The roller gap adjustment mechanism (4) includes two sets of adjustment components (41) installed on the support plate (1) and a synchronization component (42) installed on the adjustment components (41). Two sets of adjustment components (41) are used to connect the active roller (2A) to the support plate (1) and the driven roller (2B) to the support plate (1), respectively, and to adjust the distance between the active roller (2A) and the driven roller (2B); The synchronization component (42) is installed on the adjustment component (41). The synchronization component (42) is used to drive the rotating shafts (25) of the active roller (2A) and the driven roller (2B) to rotate synchronously in opposite directions to maintain the traction effect of the roller (2) on the fabric. The support plate (1) is also provided with a roller cleaning alarm mechanism (3) for cleaning the active roller (2A) and the driven roller (2B) and for promptly alarming and stopping the machine when the roller (2) wraps the fabric. The adjustable traction support mechanism (26) includes a fixed support (261), a movable support (262), a limiting groove (263), a traction adjustment screw (264), an upper inclined block (265), and a lower inclined block (266). The fixed support (261) has a limiting groove (263) arranged axially along the rotation axis (25). The movable support (262) is slidably connected to the limiting groove (263). The traction adjustment screw (264) is located inside the limiting groove (263) and is rotatably connected to the fixed support (261) through a bearing. Several inclined blocks (265) are evenly and uniformly fixedly installed on the lower side of the movable bracket (262) along the length direction of the movable bracket (262), and the side wall of the movable bracket (262) is slidably connected to the inner wall of the limiting groove (263); Several lower inclined blocks (266) corresponding one-to-one with the upper inclined block (265) are threadedly connected to the traction force adjusting screw (264) through threaded sleeves. The side wall of the lower inclined block (266) is slidably connected to the inner wall of the limiting groove (263), and the upper inclined block (265) and the lower inclined block (266) are slidably connected. The adjustment assembly (41) includes an adjustment lever (411), a first fixing block (412), a second fixing block (413), and an angle adjustment screw (414). The two adjustment levers (411) are symmetrically distributed on the left and right sides of the support plate (1). One end of the two adjustment levers (411) is hinged to the support plate (1), and the inner side of the other end of the two adjustment levers (411) is rotatably connected to the left and right ends of the rotating shaft (25), respectively. The first fixing block (412) is hinged to the support plate (1), and the second fixing block (413) is hinged to the middle of the adjusting lever (411); The angle adjusting screw (414) is rotatably connected to the first fixed block (412) through a bearing, and the angle adjusting screw (414) is threadedly connected to the second fixed block (413) through a threaded sleeve.

2. The roller device for dynamic adjustment of traction force according to claim 1, characterized in that, The synchronization component (42) includes a drive gear (421), a first connecting rod (422), a second connecting rod (423), a first synchronization gear (424), and a second synchronization gear (425). Two drive gears (421) are fixedly connected to the rotating shafts (25) of the drive roller (2A) and the driven roller (2B), respectively; One end of the first link (422) is hinged to the rotation shaft (25) of the driving roller (2A), one end of the second link (423) is hinged to the rotation shaft (25) of the driven roller (2B), and the other end of the first link (422) is hinged to the other end of the second link (423). The first synchronous gear (424) is rotatably mounted in the middle of the first connecting rod (422), and the second synchronous gear (425) is rotatably mounted at the end of the first connecting rod (422) away from the drive gear (421). The rotation axis of the second synchronous gear (425) is collinear with the rotation axis of the hinged end of the first connecting rod (422) and the second connecting rod (423). The first synchronizing gear (424) is meshed with the drive gear (421) on the side of the driving roller (2A) and the second synchronizing gear (425), and the second synchronizing gear (425) is meshed with the drive gear (421) on the side of the driven roller (2B).

3. The roller device for dynamically adjusting traction force according to claim 2, characterized in that, The synchronization component (42) further includes a first synchronization shaft (426), a second synchronization shaft (427), a first transmission gear (428), and a second transmission gear (429). The first synchronous shaft (426) is rotatably connected to the adjusting levers (411) on both sides of the active roller (2A), and the rotation axis of the first synchronous shaft (426) is collinear with the rotation axis of the adjusting lever (411) and the hinge end of the support plate (1); The second synchronous shaft (427) is rotatably connected to the adjusting levers (411) on both sides of the driven roller (2B), and the rotation axis of the second synchronous shaft (427) is collinear with the rotation axis of the adjusting lever (411) and the hinge end of the support plate (1); A first transmission gear (428) is rotatably mounted on the middle of the adjusting lever (411) on one side of the active roller (2A). A second transmission gear (429) is fixedly connected to the first synchronous shaft (426). The first transmission gear (428) meshes with the drive gear (421) on one side of the active roller (2A) and the second transmission gear (429).

4. The roller device for dynamic adjustment of traction force according to claim 3, characterized in that, The roller cleaning alarm mechanism (3) includes a blade holder (31), a cleaning scraper (32), a tension spring (33), a swing shaft (34), and an alarm assembly. Two swing shafts (34) are symmetrically fixedly installed on the front and rear sides of the inner wall of the support plate (1). The blade holder (31) is rotatably installed on the swing shaft (34). The top of the blade holder (31) is fixedly installed with a cleaning scraper (32) for cleaning the surface of the roller hose (23). A tension spring (33) is fixedly installed between the two blade holders (31). The blade holder (31) causes the cleaning scraper (32) to abut against the roller hose (23). The alarm assembly is installed on the inner wall of the support plate (1).

5. The roller device for dynamically adjusting traction force according to claim 4, characterized in that, The alarm assembly includes a fixing block (35) and a sensor (36). Each tool holder (31) has a fixing block (35) symmetrically arranged on both sides. One end of the fixing block (35) is fixedly connected to the support plate (1), and the other end of the fixing block (35) is provided with a sensor (36) for sensing the position of the tool holder (31).

6. A method of use, utilizing the roller device for dynamic adjustment of traction force as described in claim 5, characterized in that, Includes the following steps: Step 1: Rotate the traction force adjusting screw (264) to make the lower inclined block (266) move along the axis of the rotating shaft (25) under the limiting action of the limiting groove (263), thereby changing the distance between the axes of the driving rod (21) and the driven rod (22) under the cooperation of the upper inclined block (265) and the lower inclined block (266) to adjust the tension of the roller hose (23); Step 2: Rotate the angle adjustment screw (414) to adjust the center distance between the first fixed block (412) and the second fixed block (413), so that the roller (2) swings between the support plate (1) by adjusting the swing arm (411) to adjust the distance between the active roller (2A) and the driven roller (2B); Step 3: Under the action of the synchronization component (42), the roller hoses (23) of the active roller (2A) and the driven roller (2B) rotate synchronously in opposite directions to perform traction work on the fabric.

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