Roller device capable of dynamically adjusting traction force and method thereof

Abstract

The invention discloses a roller device and method for dynamically adjusting traction force, and belongs to the technical field of flat knitting machines. The roller device comprises supporting plates and two rollers arranged between the supporting plates; each of the driving roller and the driven roller comprises a driving rod, a driven rod, a roller rubber tube, a baffle plate, a rotating shaft and a traction force adjustable bracket mechanism; a roller spacing adjusting mechanism is arranged on the supporting plate and comprises two adjusting assemblies installed on the supporting plate and a synchronous assembly installed on the adjusting assemblies. According to the mode, the distance between the axis of the driving rod and the axis of the driven rod can be changed through the traction force adjustable support mechanism to adjust the tensioning degree of the roller rubber pipe, and therefore dynamic adjustment of the traction force of the roller is achieved, and the roller meets the traction requirements of fabrics made of different materials; and in addition, the roller rubber tube is tensioned through the traction force adjustable support mechanism after the roller rubber tube is sleeved, so that the replacement difficulty of the roller rubber tube can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of knitting flat knitting machines, and in particular to a roller device for dynamically adjusting traction force and a method thereof. Background Art

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

[0003] Chinese patent CN110306285B discloses a roller device of a computerized flat knitting machine, which is provided with a small roller and a large roller, and a pressing leather cover is movably connected between the small roller and the large roller. When in use, the servo motor is started to rotate forward to drive the flattening roller to smooth the cloth forward and backward, and the servo motor is reversed to drive the pressing leather cover to press the cloth. However, the roller device still has the following problems: 1. Fabrics of different materials require different traction forces to achieve stable transmission, and fabrics of different thicknesses have different requirements for roller spacing; 2. After replacing a new roller hose for the roller, it is necessary to oil the driven rod at the eccentric part of the roller and knock it into the inside of the roller hose, so that the roller forms a triangular structure similar to a flat cam. However, in order to maintain the tension of the roller hose, it is inconvenient to knock the driven rod into the inside of the roller hose, and there is also the risk of the driven rod damaging the roller hose.

[0004] Based on this, the present invention designs a roller device with dynamic traction force adjustment and a method thereof 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 is implemented through the following technical solutions: A roller device with dynamically adjusted traction force comprises a support plate and two rollers arranged between the support plates; The two rollers are respectively arranged as an active roller and a driven roller. The active roller and the driven roller have the same structure, and both include an active rod, a driven rod, a roller hose, a baffle, a rotating shaft and a traction-adjustable bracket mechanism. The driven rod and the active rod are respectively against the upper and lower ends of the traction-adjustable bracket mechanism. The traction-adjustable bracket mechanism is used to adjust the distance between the axes of the active rod and the driven rod. The rotating shaft is fixedly connected to the active rod, and the axes of the rotating shaft and the active rod are collinear; The roller hose is wound around the outside of the active rod and the driven rod; Baffles are symmetrically arranged at the left and right ends of the rotating shaft, and the rotating shaft is used to prevent the active rod, the driven rod and the traction adjustable bracket mechanism from moving axially along the rotating shaft; A roller distance adjustment mechanism is provided on the support plate, and the roller distance adjustment mechanism comprises two groups of adjustment components installed on the support plate and a synchronization component installed on the adjustment component; The two groups of adjustment components are respectively used for connecting the active roller to the support plate and the driven roller to the support plate, and adjusting the spacing between the active roller and the driven roller; The synchronization component is installed on the adjustment component, and the synchronization component is used to drive the rotating shafts of the active roller and the driven roller to always rotate synchronously in opposite directions to maintain the traction effect of the rollers on the fabric; The support plate is also provided with a roller cleaning alarm mechanism for cleaning the active roller and the driven roller and for timely alarming and stopping the machine when the rollers are wound around the fabric.

[0007] Furthermore, the traction force adjustable bracket mechanism includes a fixed bracket, a movable bracket, a limiting groove, a traction force adjustment screw, an upper inclined block and a lower inclined block. The fixed bracket is provided with a limiting groove arranged along the axial direction of the rotating shaft, and the movable bracket is limitedly and slidably connected with the limiting groove; the traction force adjustment screw is located inside the limiting groove, and the traction force adjustment screw is rotatably connected with the fixed bracket through a bearing; A plurality of upper inclined blocks are evenly and evenly fixedly installed on the lower side of the movable bracket along the length direction of the movable bracket, and the side wall of the movable bracket is limitedly and slidably connected with the inner wall of the limit groove; A plurality of lower inclined blocks corresponding to the upper inclined blocks are threadedly connected to the traction force adjusting screw rod through threaded sleeves, the side walls of the lower inclined blocks are limitedly slidably connected to the inner walls of the limiting grooves, and the upper inclined blocks are limitedly slidably connected to each other.

[0008] Furthermore, the adjustment assembly includes an adjustment swing rod, a first fixed block, a second fixed block and an angle adjustment screw rod, the two adjustment swing rods are symmetrically distributed on the left and right sides of the support plate, one end of the two adjustment swing rods is hinged to the support plate, and the inner sides of the other ends of the two adjustment swing rods are rotatably connected to the left and right ends of the rotating shaft respectively; The first fixing block is hinged to the support plate, and the second fixing block is hinged to the middle part of the adjusting swing rod; The angle adjustment screw is rotatably connected to the first fixed block through a bearing, and the angle adjustment screw is threadably connected to the second fixed block through a threaded sleeve.

[0009] Furthermore, the synchronization assembly includes a driving gear, a first connecting rod, a second connecting rod, a first synchronization gear and a second synchronization gear; The two driving gears are fixedly connected to the rotating shafts of the active roller and the driven roller respectively; One end of the first connecting rod is hinged to the rotating shaft of the active roller, one end of the second connecting rod is hinged to the rotating shaft of the driven roller, and the other end of the first connecting rod is hinged to the other end of the second connecting rod; The first synchronous gear is rotatably mounted on the middle part of the first connecting rod, and the second synchronous gear is rotatably mounted on an end of the first connecting rod away from the driving gear, and the rotation axis of the second synchronous gear is colinear with the rotation axis of the hinged end of the first connecting rod and the second connecting rod; The first synchronous gear is meshed and connected with the driving gear on one side of the active roller and the second synchronous gear, and the second synchronous gear is meshed and connected with the driving gear on one side of the driven roller.

[0010] Furthermore, the synchronization assembly further 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 swing rods on both sides of the active roller, and the rotation axis of the first synchronous shaft is colinear with the rotation axis of the adjusting swing rod and the hinged end of the support plate; The second synchronous shaft is rotatably connected to the adjusting swing rods on both sides of the driven roller, and the rotation axis of the second synchronous shaft is colinear with the rotation axis of the adjusting swing rod and the hinged end of the support plate; A first transmission gear is rotatably mounted on the middle of the adjusting swing arm on one side of the active roller, a second transmission gear is fixedly connected to the first synchronization shaft, and the first transmission gear is meshedly connected to the driving gear on one side of the active roller and the second transmission gear.

[0011] Furthermore, the roller cleaning alarm mechanism includes a knife holder, a cleaning scraper, a tension spring, a swing shaft and an alarm assembly. The two swing shafts are symmetrically fixed on the front and rear sides of the inner wall of the support plate. The knife holder is rotatably mounted on the swing shaft. A cleaning scraper for cleaning the attachments on the surface of the roller hose is fixedly mounted on the top of the knife holder. A tension spring is fixedly mounted between the two knife holders, and the knife holder makes the cleaning scraper and the roller hose collide with each other. The alarm assembly is mounted on the inner wall of the support plate.

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

[0013] In order to better achieve the purpose of the present invention, the present invention also provides a method for using a roller device with dynamic traction adjustment, comprising the following steps: Step 1: Rotate the traction force adjustment screw to make the lower inclined block move along the axis of the rotating shaft under the limiting action of the limiting groove, so as to change the axis distance between the active rod and the driven rod under the cooperation of the upper inclined block and the lower inclined block to adjust the tension of the roller hose; Step 2: Rotate the angle adjustment screw to adjust the center distance between the first fixed block and the second fixed block, so that the roller swings between the support plates by adjusting the swing rod to adjust the distance between the active roller and the driven roller; Step 3: Under the action of the synchronization component, the roller hoses of the active roller and the driven roller always rotate synchronously in opposite directions to carry out the traction operation on the fabric.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The spacing between the axes of the active rod and the driven rod can be changed by the traction force adjustable bracket mechanism to adjust the tension of the roller hose. When the spacing 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, the traction force of the roller hose on the fabric is reduced, thereby realizing dynamic adjustment of the traction force of the roller, so that the roller can adapt to the traction requirements of fabrics of different materials, and by tensioning the roller hose through the traction force adjustable bracket mechanism after the roller hose is sleeved, the difficulty of replacing the roller hose can be effectively reduced; 2. The two sets of adjustment components can control the activities of the active roller and the driven roller respectively, so as to adjust the distance between the active roller and the driven roller, so that the rollers can adapt to the traction requirements of fabrics of different thicknesses, and the roller hoses of the active roller and the driven roller are driven by the synchronization component to always rotate synchronously in opposite directions to ensure uniform traction force; 3. Under the action of the tension spring, the cleaning scraper always contacts the roller hose, and the attachments on the roller hose are continuously scraped off to ensure the production quality of the fabric; when there are many attachments on the roller hose, the friction between the cleaning scraper and the roller hose will increase, and the knife seat will swing to the outside of the roller; When the amount of attachments on the roller hose exceeds the set value, the knife seat will trigger the sensor contact to shut down the equipment and sound 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 avoiding damage to the flat knitting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A three-dimensional roller device with dynamic traction adjustment according to the present invention Figure 1 ; Figure 2 It is a front view of a roller device with dynamic traction adjustment of the present invention; Figure 3A three-dimensional roller device with dynamic traction adjustment according to the present invention Figure 2 ; Figure 4 It is a right side view of a roller device with dynamic traction adjustment of the present invention; Figure 5 For along Figure 2 AA direction cross-sectional view; Figure 6 The structure of the adjustable traction force support mechanism of the present invention is Figure 1 ; Figure 7 The structure of the adjustable traction force support mechanism of the present invention is Figure 2 .

[0017] The numbers in the figure represent: 1. Support plate; 2. Roller; 2A. Active roller; 2B. Driven roller; 21. Active rod; 22. Driven rod; 23. Roller hose; 24. Baffle; 25. Rotating shaft; 26. Traction adjustable bracket mechanism; 261. Fixed bracket; 262. Movable bracket; 263. Limiting groove; 264. Traction adjustment screw rod; 265. Upper inclined block; 266. Lower inclined block; 3. Roller cleaning alarm mechanism; 31. Knife holder; 32. Cleaning scraper; 33. Tension spring; 34. Swinging shaft; 3 5. Fixed block; 36. Sensor; 4. Roller spacing adjustment mechanism; 41. Adjustment assembly; 411. Adjustment rocker; 412. First fixed block; 413. Second fixed block; 414. Angle adjustment screw; 42. Synchronization assembly; 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 DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0020] Embodiment 1: In some embodiments, please refer to the drawings of the specification Figure 1-Figure 7, a roller device with dynamic traction adjustment, comprising a support plate 1 and two rollers 2 arranged between the support plates 1; The two rollers 2 are respectively configured as an active roller 2A and a driven roller 2B. The active roller 2A and the driven roller 2B have the same structure, and both include an active rod 21, a driven rod 22, a roller hose 23, a baffle 24, a rotating shaft 25, and a traction-adjustable bracket mechanism 26. The driven rod 22 and the active rod 21 are respectively against the upper and lower ends of the traction-adjustable bracket mechanism 26. The traction-adjustable bracket 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 active rod 21, and the axes of the rotating shaft 25 and the active rod 21 are collinear; The roller hose 23 is wound around the outside of the active rod 21 and the driven rod 22; Baffles 24 are symmetrically arranged at the left and right ends of the rotating shaft 25, and the rotating shaft 25 is used to block the active rod 21, the driven rod 22 and the traction adjustable bracket mechanism 26 from moving axially along the rotating shaft 25; The active rod 21 can be driven to rotate by driving the rotating shaft 25, and the roller hose 23 can be rotated under the cooperation and support of the active rod 21 and the driven rod 22 at both ends of the traction force adjustable bracket mechanism 26, and the two roller hoses 23 cooperate to achieve the traction effect on the fabric; A roller pitch adjustment mechanism 4 is provided on the support plate 1, and the roller pitch adjustment mechanism 4 includes two groups of adjustment components 41 installed on the support plate 1 and a synchronization component 42 installed on the adjustment component 41, and the two groups of adjustment components 41 are respectively 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, and the adjustment component 41 can also control the swing of the roller 2, so as to adjust the distance between the active roller 2A and the driven roller 2B through the adjustment component 41; the synchronization component 42 is installed on the adjustment component 41, and the synchronization component 42 is used to drive the rotating shafts 25 of the active roller 2A and the driven roller 2B to always rotate synchronously in the opposite direction 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 giving an alarm and stopping the machine in time when the roller 2 is winding the fabric.

[0021] In the present 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 traction force adjustable bracket 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, the traction force of the roller hose 23 on the fabric is reduced, thereby realizing dynamic adjustment of the traction force of the roller 2, so that the roller 2 can adapt to the traction requirements of fabrics of different materials. When replacing the roller hose 23, the distance between the axes of the active rod 21 and the driven rod 22 can be reduced by the traction-adjustable bracket mechanism 26, so that the roller hose 23 can be easily sleeved on the outside of the active rod 21 and the driven rod 22. After the roller hose 23 is sleeved, the roller hose 23 is tightened by the traction-adjustable bracket mechanism 26, 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 inner side of the roller hose 23 due to the large friction between the driven rod 22 and the roller hose 23 during assembly. The two groups of adjustment components 41 can be used to control the activities of the active roller 2A and the driven roller 2B respectively, so as to adjust the spacing between the active roller 2A and the driven roller 2B, so that the roller 2 can adapt to the traction requirements of fabrics of different thicknesses, and the roller hoses 23 of the active roller 2A and the driven roller 2B are driven by the synchronization component 42 to always rotate synchronously in opposite directions to ensure uniform traction force.

[0022] The traction force adjustable bracket mechanism 26 includes a fixed bracket 261, a movable bracket 262, a limiting groove 263, a traction force adjustment screw rod 264, an upper inclined block 265 and a lower inclined block 266. The fixed bracket 261 is provided with a limiting groove 263 arranged along the axial direction of the rotating shaft 25, and the movable bracket 262 is limitedly and slidably connected with the limiting groove 263; the traction force adjustment screw rod 264 is located inside the limiting groove 263, and the traction force adjustment screw rod 264 is rotatably connected with the fixed bracket 261 through a bearing; A plurality of upper inclined blocks 265 are evenly and evenly 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 limitedly slidably connected with the inner wall of the limiting groove 263; A plurality of lower inclined blocks 266 corresponding to the upper inclined blocks 265 are threadedly connected to the traction force adjustment screw rod 264 through threaded sleeves, and the side walls of the lower inclined blocks 266 are limitedly slidably connected to the inner walls of the limiting grooves 263, and the upper inclined blocks 265 are limitedly slidably connected to each other; In the present invention, the active rod 21, the driven rod 22, the fixed bracket 261 and the movable bracket 262 are first assembled, and then the roller hose 23 is sleeved on the outside thereof, and then the baffles 24 are installed at both ends of the rotating shaft 25 to limit the components on the inside thereof, and then the traction force adjustment screw 264 is rotated to allow the lower inclined block 266 to move along the axis of the rotating shaft 25 under the limiting action of the limiting groove 263, so that the upper inclined block 265 and the lower inclined block 266 cooperate to change the distance between the axes of the active rod 21 and the driven rod 22, thereby realizing precise control of the tension of the roller hose 23.

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

[0024] Embodiment 2: In some embodiments, Figure 5 and Figure 7 As shown, as a preferred embodiment of the present invention, the roller cleaning alarm mechanism 3 includes a knife seat 31, a cleaning scraper 32, a tension spring 33, a swing shaft 34, a fixed block 35 and a sensor 36. The two swing shafts 34 are symmetrically fixedly installed on the front and rear sides of the inner wall of the support plate 1. The knife seat 31 is rotatably installed on the swing shaft 34. The cleaning scraper 32 for cleaning the attachments on the surface of the roller hose 23 is fixedly installed on the top of the knife seat 31; a tension spring 33 is fixedly installed between the two knife seats 31, and the knife seat 31 makes the cleaning scraper 32 abut against the roller hose 23; A fixing block 35 is symmetrically arranged on both sides of each knife seat 31, 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 knife seat 31; In the present invention, under the action of the tension spring 33, the cleaning scraper 32 is always against the roller hose 23, and the attached materials on the roller hose 23 are continuously scraped off to ensure the production quality of the fabric; when there are many attached materials on the roller hose 23, the friction between the cleaning scraper 32 and the roller hose 23 will increase, and the knife seat 31 will swing to the outside of the roller 2; When the attachments on the roller hose 23 exceed the set value, the knife seat 31 will trigger the sensor 36 to contact and shut down the equipment and sound an alarm, so that the operator can check and clean the roller hose 23 in time, thereby ensuring the stable product quality of the flat knitting machine and avoiding damage to the flat knitting machine.

[0025] Embodiment 3: In some embodiments, Figure 1-Figure 7 As shown, as a preferred embodiment of the present invention, a method for using a roller device with dynamic traction adjustment comprises 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, so as to change the axis distance between the active 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 plates 1 by adjusting the swing rod 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 always rotate synchronously in opposite directions to perform the pulling operation on the fabric.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements 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 with dynamically adjusted traction force, comprising a support plate (1) and two rollers (2) arranged between the support plates (1), characterized in that: The two rollers (2) are respectively arranged as an active roller (2A) and a driven roller (2B). The active roller (2A) and the driven roller (2B) have the same structure, and both include an active rod (21), a driven rod (22), a roller hose (23), a baffle (24), a rotating shaft (25), and a traction-adjustable support mechanism (26). The driven rod (22) and the active rod (21) are respectively abutted against the upper and lower ends of the traction-adjustable support mechanism (26). The traction-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 active rod (21), and the axes of the rotating shaft (25) and the active rod (21) are collinear; The roller hose (23) is wound around the outside of the active rod (21) and the driven rod (22); Baffles (24) are symmetrically arranged at the left and right ends of the rotating shaft (25), and the rotating shaft (25) is used to prevent the active rod (21), the driven rod (22) and the traction adjustable bracket mechanism (26) from axially moving along the rotating shaft (25); A roller gap adjustment mechanism (4) is provided on the support plate (1), and the roller gap adjustment mechanism (4) comprises two groups of adjustment components (41) mounted on the support plate (1) and a synchronization component (42) mounted on the adjustment component (41); The two groups of adjustment components (41) are respectively used for connecting the active roller (2A) to the support plate (1) and for connecting the passive roller (2B) to the support plate (1), and for adjusting the distance between the active roller (2A) and the passive roller (2B); The synchronization component (42) is mounted on the adjustment component (41), and is used to drive the rotating shafts (25) of the active roller (2A) and the driven roller (2B) to always rotate synchronously in opposite directions to maintain the traction effect of the rollers (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 giving an alarm and stopping the machine when the roller (2) is wrapped around a fabric.

2. The roller device with dynamic traction adjustment according to claim 1, characterized in that: The traction force adjustable support mechanism (26) comprises a fixed support (261), a movable support (262), a limiting groove (263), a traction force adjustment screw rod (264), an upper inclined block (265) and a lower inclined block (266); the fixed support (261) is provided with a limiting groove (263) arranged along the axial direction of the rotating shaft (25); the movable support (262) is slidably connected to the limiting groove (263); the traction force adjustment screw rod (264) is located inside the limiting groove (263), and the traction force adjustment screw rod (264) is rotatably connected to the fixed support (261) via a bearing; A plurality of upper inclined blocks (265) are evenly and evenly 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 limitedly slidably connected to the inner wall of the limiting groove (263); A plurality of lower inclined blocks (266) corresponding to the upper inclined blocks (265) are threadedly connected to the traction force adjustment screw rod (264) through threaded sleeves, the side walls of the lower inclined blocks (266) are limitedly slidably connected to the inner walls of the limit grooves (263), and the upper inclined blocks (265) are limitedly slidably connected to each other.

3. The roller device with dynamic traction adjustment according to claim 2, characterized in that: The adjustment assembly (41) comprises an adjustment swing rod (411), a first fixed block (412), a second fixed block (413) and an angle adjustment screw rod (414); the two adjustment swing rods (411) are symmetrically distributed on the left and right sides of the support plate (1); one end of the two adjustment swing rods (411) is hinged to the support plate (1); and the inner sides of the other ends of the two adjustment swing rods (411) are 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 part of the adjusting swing rod (411); The angle adjustment screw rod (414) is rotatably connected to the first fixed block (412) via a bearing, and the angle adjustment screw rod (414) is threadedly connected to the second fixed block (413) via a threaded sleeve.

4. The roller device with dynamic traction adjustment according to claim 3, characterized in that: The synchronization assembly (42) comprises a driving gear (421), a first connecting rod (422), a second connecting rod (423), a first synchronization gear (424) and a second synchronization gear (425); The two driving gears (421) are respectively fixedly connected to the rotating shafts (25) of the active roller (2A) and the driven roller (2B); One end of the first connecting rod (422) is hinged to the rotating shaft (25) of the active roller (2A), one end of the second connecting rod (423) is hinged to the rotating shaft (25) of the driven roller (2B), and the other end of the first connecting rod (422) is hinged to the other end of the second connecting rod (423); The first synchronous gear (424) is rotatably mounted on the middle part of the first connecting rod (422), the second synchronous gear (425) is rotatably mounted on an end of the first connecting rod (422) away from the driving gear (421), and the rotation axis of the second synchronous gear (425) is colinear with the rotation axis of the hinged ends of the first connecting rod (422) and the second connecting rod (423); The first synchronous gear (424) is meshedly connected with the driving gear (421) on one side of the active roller (2A) and the second synchronous gear (425), and the second synchronous gear (425) is meshedly connected with the driving gear (421) on one side of the driven roller (2B).

5. The roller device with dynamic traction adjustment according to claim 4, characterized in that: The synchronization assembly (42) further comprises a first synchronization shaft (426), a second synchronization shaft (427), a first transmission gear (428) and a second transmission gear (429); The first synchronization shaft (426) is rotationally connected to the adjustment swing rods (411) on both sides of the active roller (2A), and the rotation axis of the first synchronization shaft (426) is colinear with the rotation axis of the adjustment swing rod (411) and the hinged end of the support plate (1); The second synchronization shaft (427) is rotationally connected to the adjustment swing rods (411) on both sides of the driven roller (2B), and the rotation axis of the second synchronization shaft (427) is colinear with the rotation axis of the adjustment swing rod (411) and the hinged end of the support plate (1); A first transmission gear (428) is rotatably mounted on the middle portion of the adjusting swing rod (411) on one side of the active roller (2A); the second transmission gear (429) is fixedly connected to the first synchronization shaft (426); and the first transmission gear (428) is meshingly connected to the driving gear (421) on one side of the active roller (2A) and the second transmission gear (429).

6. The roller device with dynamic traction adjustment according to claim 5, characterized in that: The roller cleaning alarm mechanism (3) comprises a knife seat (31), a cleaning scraper (32), a tension spring (33), a swing shaft (34) and an alarm component. The two swing shafts (34) are symmetrically fixedly mounted on the front and rear sides of the inner wall of the support plate (1). The knife seat (31) is rotatably mounted on the swing shaft (34). The top of the knife seat (31) is fixedly mounted with a cleaning scraper (32) for cleaning the surface of the roller rubber hose (23). A tension spring (33) is fixedly mounted between the two knife seats (31). The knife seat (31) causes the cleaning scraper (32) to abut against the roller rubber hose (23). The alarm component is mounted on the inner wall of the support plate (1).

7. The roller device with dynamic traction adjustment according to claim 6, characterized in that: The alarm assembly comprises a fixed block (35) and a sensor (36), wherein the fixed blocks (35) are symmetrically arranged on both sides of each knife seat (31), one end of the fixed block (35) is fixedly connected to the support plate (1), and the other end of the fixed block (35) is provided with a sensor (36) for sensing the position of the knife seat (31).

8. A method of use, using the roller device with dynamic traction adjustment according to claim 7, characterized in that: The following steps are involved: Step 1: Rotate the traction force adjustment screw (264) to move the lower inclined block (266) along the axis of the rotating shaft (25) under the limiting action of the limiting groove (263), thereby changing the axial distance between the active 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 plates (1) by adjusting the swing rod (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) always rotate synchronously in opposite directions to perform a pulling operation on the fabric.

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