Full-automatic cloth falling and tearing device and method for flat flexible cloth

Abstract

The application provides a full-automatic cloth falling and tearing device and method for flat flexible cloth, which is composed of a rotary cloth tearing device, a cantilever support, a cutter assembly and the like, can realize full-automatic cloth falling and tearing for flat flexible cloth, avoids adverse factors generated in the cloth production process in efficiency, stability and quality by manual operation, thereby improving production efficiency, production quality and automation degree, greatly reducing labor cost, and improving a production operation environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of open-width flexible fabric dyeing and finishing equipment, and particularly relates to an open-width flexible fabric full-automatic cloth falling and tearing device and method. BACKGROUND

[0002] Open-width flexible fabric is still a labor-intensive industry in the whole dyeing and finishing industry. Since the open-width flexible fabric has a large range of material properties such as width, thickness and elasticity, and a large variety of types, and the flexible fabric itself has poor rigidity, it is extremely difficult to realize the automation of cloth falling and tearing, especially for woven fabric, which can only be manually torn by hand to ensure the integrity of the weft at the break, thereby reducing fabric waste. However, this method has many manual interventions in the production process, and has the problems of poor production environment, high labor intensity, low production efficiency and quality, and high labor cost. Therefore, there is an urgent need for an open-width flexible fabric full-automatic cloth falling and tearing device to solve the above problems. SUMMARY

[0003] Therefore, the present application discloses an open-width flexible fabric full-automatic cloth falling and tearing device and method, and the specific scheme is as follows:

[0004] An open-width flexible fabric full-automatic cloth falling and tearing device is used for tearing off fabric, and comprises a rotary tearing device, a cantilever support, a main support, a first chuck assembly, a second chuck assembly, a cutter assembly, a guide roller and a seam head recognition system.

[0005] The cantilever support is arranged on the main support and located at the front side of the main support.

[0006] The first chuck assembly is arranged on the cantilever support, the second chuck assembly is arranged on the main support, and the first chuck assembly is arranged above the second chuck assembly.

[0007] The cutter assembly comprises a cutter support, a first cutter and a second cutter. The cutter support is arranged on the cantilever support and located between the first chuck assembly and the second chuck assembly. The first cutter and the second cutter are both arranged on the cutter support, and the first cutter is located above the second cutter.

[0008] The rotating tearing device comprises a rotating tearing chuck, a linear walking support, and a linear walking driving mechanism; the linear walking support is arranged on the main body support and comprises a tearing component track and a tearing component rack, and the tearing component rack is arranged on one side of the tearing component track; the linear walking driving mechanism comprises a tearing driving motor and a chuck support, the chuck support is arranged on the tearing component track, the tearing driving motor is arranged on the chuck support, and a gear meshing with the tearing component rack is arranged on the tearing driving motor; the rotating tearing chuck comprises a chuck fixed part, a chuck moving part, a chuck cylinder, a fixed jaw, and a moving jaw; the chuck fixed part is arranged on the chuck support, the chuck cylinder is fixedly arranged on the chuck fixed part, the chuck moving part is located on one side of the chuck fixed part, an end of a piston rod of the chuck cylinder is connected with the chuck moving part, and the chuck fixed part and the chuck moving part are located between the first cutter component and the second cutter component of the cutter component; the fixed jaw is arranged on the chuck fixed part, the moving jaw is arranged on the chuck moving part, and the moving jaw is arranged opposite to the fixed jaw; and the guide roller is arranged on the main body support and located at the rear side of the rotating tearing chuck.

[0009] The seam end recognition system comprises a seam end recognition sensor and a cloth running encoder, the seam end recognition sensor is arranged on the main body support and located at the rear side of the guide roller, and the cloth running encoder is arranged on the guide roller.

[0010] As a supplement to the technical scheme of the present application, the first chuck component and the second chuck component are structurally identical and comprise a first clamping jaw, a second clamping jaw, a bidirectional cylinder, and a cylinder support, the bidirectional cylinder comprises two groups of piston rods capable of moving in opposite directions, the first clamping jaw is arranged at an end of a first piston rod, and the second clamping jaw is arranged at an end of a second piston rod.

[0011] The rotating tearing chuck further comprises a chuck guide rod, one end of the chuck guide rod is arranged on the chuck fixed part, a guide sleeve for the chuck guide rod to pass through is arranged on the chuck moving part, and a lower part of the chuck guide rod is located in the guide sleeve on the chuck moving part.

[0012] As a supplement to the technical scheme of the present application, the cutter component further comprises a cutter track, a cutter rack, and a cutter component driving motor, the cutter track and the cutter rack are arranged on the cantilever support, the cutter support is arranged on the cutter track, the cutter component driving motor is arranged on the cutter support and connected with the cutter rack through a gear, and the distance between the first cutter and the second cutter should satisfy the following formula:

[0013] L≥2H

[0014] In the above formula, L is the distance between the first cutter and the second cutter, and H is the maximum weft inclination height of the cloth.

[0015] As a supplement to the technical scheme of the present application, the hollow rotating platform and the chuck rotating drive mechanism are both arranged on the chuck support, the hollow rotating platform is connected with the chuck fixed part through the cloth tearing chuck flange, and the chuck rotating drive mechanism comprises a rotating motor connected with the central control platform to drive the cloth tearing chuck flange to rotate and drive the chuck fixed part to rotate.

[0016] As a supplement to the technical scheme of the present application, the side edge of the chuck fixed part is in an arc-shaped structure, the side edge of the chuck moving part is in an arc-shaped structure, when the piston rod of the chuck cylinder is retracted to make the fixed jaw and the moving jaw in a cloth clamping state, the chuck fixed part and the chuck moving part are combined, and the outer periphery of the rotating cloth tearing chuck is in a circular structure.

[0017] As a supplement to the technical scheme of the present application, when the chuck fixed part and the chuck moving part are in a combined state, the diameter of the rotating cloth tearing chuck and the cloth width satisfy the following relationship:

[0018] πD≥B

[0019] In the above formula, D is the diameter of the rotating cloth tearing chuck, and B is the cloth width.

[0020] The rotating speed of the rotating cloth tearing chuck and the transverse moving speed of the rotating cloth tearing chuck satisfy the following relationship:

[0021] V 转 =V 横

[0022] In the above formula, V 转 is the linear speed of the outer periphery of the rotating cloth tearing chuck, and V 横 is the transverse moving speed of the rotating cloth tearing chuck on the track of the cloth tearing assembly.

[0023] As a supplement to the technical scheme of the present application, the second sensor is arranged on the support of the linear walking support.

[0024] As a supplement to the technical scheme of the present application, the belt walking traction assembly and the width centering assembly are further included.

[0025] The width centering assembly is arranged at the rear part of the main body support and comprises a transition roller, a first deviation correcting cylinder, a transition roller support, a transition roller slide rail, and a first light curtain sensor. The transition roller is arranged on the transition roller support, the transition roller slide rail is arranged on the main body support, and the transition roller support is arranged on the transition roller slide rail. The piston rod of the first deviation correcting cylinder is connected with the transition roller support. The first light curtain sensor is arranged on the main body support and located at one side of the transition roller. The first light curtain sensor comprises a light projector and a light receiver, and the cloth passes between the light projector and the light receiver of the first light curtain sensor.

[0026] The walking belt traction assembly is arranged at the front of the main support and above the rotary tearing device, and comprises a traction motor, a traction rotating roller, a traction cylinder, a lifting pedestal and a pressure rotating roller, the traction rotating roller is arranged on the main support and connected with the main support through a bearing, the traction motor is connected with the traction rotating roller, the traction cylinder is arranged on the main support, the lifting pedestal is arranged at the end of the piston rod of the traction cylinder, and the pressure rotating roller is arranged on the lifting pedestal and above the traction rotating roller and connected with the lifting pedestal through a bearing.

[0027] As a supplement to the technical scheme of the present application, the full-automatic cloth falling and tearing device for flat flexible cloth is characterized in that it further comprises a walking belt deviation correction assembly; the walking belt deviation correction assembly is arranged on the main support and between the walking belt traction assembly and the width centering assembly, and comprises a deviation correction shaft, a deviation correction support, a deviation correction motor, a second light curtain sensor, a deviation correction slide rail and a second deviation correction cylinder; the deviation correction shaft and the deviation correction motor are arranged on the deviation correction support, the deviation correction motor is connected with the deviation correction shaft, the deviation correction slide rail is arranged on the main support, the deviation correction support is arranged on the deviation correction slide rail, the second deviation correction cylinder is arranged on the main support, and the end of the piston rod of the second deviation correction cylinder is connected with the deviation correction support; the second light curtain sensor is arranged on the main support and at one side of the walking belt deviation correction assembly, the second light curtain sensor has the same structure as the first light curtain sensor, and the cloth passes between the light projector and the light receiver of the second light curtain sensor.

[0028] The present application further discloses a use method of the full-automatic cloth falling and tearing device for flat flexible cloth, which is characterized by comprising the following steps:

[0029] S1. turning on the deviation correction motor of the walking belt deviation correction assembly and the traction motor of the walking belt traction assembly,

[0030] The cloth first enters the width centering assembly, the width centering assembly adjusts and positions the cloth, and the first light curtain sensor cooperates with the first deviation correction cylinder to realize preliminary deviation correction of the cloth.

[0031] Then the cloth enters the walking belt deviation correction assembly, the second light curtain sensor cooperates with the second deviation correction cylinder to realize accurate walking belt deviation correction of the cloth.

[0032] Then the cloth enters the walking belt traction assembly, and the walking belt traction assembly delivers the cloth to the rotary tearing device.

[0033] S2. when the cloth selvedge is recognized by the selvedge recognition sensor, the cloth walking belt encoder measures the cloth walking belt distance, and when the cloth selvedge walks to the middle position between the first cutter and the second cutter, the deviation correction motor of the walking belt deviation correction assembly and the traction motor of the walking belt traction assembly are turned off.

[0034] The first clamp head assembly drives the upper part of the cloth to be clamped, the second clamp head assembly drives the lower part of the cloth to be clamped, the cloth tearing drive motor of the rotary cloth tearing device is started, the fixed jaw and the moving jaw are clamped to the cloth by the work of the clamp cylinder, then the first cutter of the cutter assembly cuts the cloth edge between the first clamp head assembly and the rotary cloth tearing device, and the second cutter cuts the cloth edge between the second clamp head assembly and the rotary cloth tearing device, so that the one side edge of the cloth forms two cuts; then the cloth tearing drive motor of the rotary cloth tearing device drives the rotary cloth tearing clamp to move along the track of the cloth tearing assembly, and the rotary drive mechanism of the clamp drives the rotary cloth tearing clamp to rotate, so that the rotary speed of the rotary cloth tearing clamp and the horizontal moving speed of the rotary cloth tearing clamp satisfy the following relationship:

[0035] V 转 = V 横

[0036] In the formula, V 转 is the linear speed of the outer periphery of the rotary cloth tearing clamp, and V 横 is the horizontal moving speed of the rotary cloth tearing clamp on the track of the cloth tearing assembly.

[0037] S3. After the cloth tearing is completed, the piston rod of the clamp cylinder is driven to extend, the moving jaw is away from the fixed jaw, the torn cloth falls freely, the rotary cloth tearing clamp is reset by the combined action of the rotary drive mechanism and the linear walking drive, and the first clamp head assembly and the second clamp head assembly release the clamping of the cloth.

[0038] Beneficial effects: the full-automatic cloth tearing device for flat flexible cloth disclosed by the application can realize automatic variable-speed cloth running, parking, clamping, cutting and tearing processes, and improves the cloth seam tearing efficiency. In another aspect of the application, the linear speed of the outer periphery of the rotary cloth tearing clamp is the same as the horizontal moving speed of the rotary cloth tearing clamp, so that the cloth tearing process is completed at a constant tearing angle, and the tearing quality is improved. In another aspect of the application, the cloth is centered before being torn, so that the cloth runs to the rotary cloth tearing device in a non-skewed state, and the tearing quality is affected. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a front view structural schematic diagram of the application.

[0040] Figure 2 It is a front view structural schematic diagram of the application.

[0041] Figure 3 It is a structural schematic diagram of the rotary cloth tearing device of the application.

[0042] Figure 4 Structure diagram of the rotating tearing device of the present application.

[0043] Figure 5 Structure diagram of the rotating tearing device of the present application.

[0044] Figure 6 Structure diagram of the rotating tearing device of the present application.

[0045] Figure 7 Structure diagram of the rotating tearing device of the present application.

[0046] Figure 8 Structure diagram of the rotating tearing device of the present application.

[0047] Figure 9 Structure diagram of the rotating tearing device of the present application.

[0048] In the figure: 1. rotating tearing device, 2. cantilever support, 3. rotating tearing device, 4. straight line walking support, 5. straight line walking driving mechanism, 6. main body support, 7. tearing component rack, 8. tearing component track, 9. tearing driving motor, 10. clamp support, 11. clamp fixed part, 12. clamp moving part, 13. clamp cylinder, 14. fixed jaw, 15. moving jaw, 16. clamp guide rod, 17. hollow rotating platform, 18. clamp rotating driving mechanism, 19. tearing clamp flange, 20. second sensor, 21. first clamp assembly, 22. second clamp assembly, 23. cutter support, 24. first cutter, 25. second cutter, 26. first clamping jaw, 27. second clamping jaw, 28. bidirectional cylinder, 29. cylinder support, 30. cutter track, 31. cutter rack, 32. cutter component driving motor, 33. walking traction assembly, 34. traction motor, 35. traction roller, 36. traction cylinder, 37. lifting platform, 38. pressure roller, 39. width centering assembly, 40. transition roller, 41. first deviation cylinder, 42. transition roller support, 43. transition roller slide rail, 44. first light curtain sensor, 45. walking deviation assembly, 46. deviation shaft, 47. deviation support, 48. deviation motor, 49. second light curtain sensor, 50. deviation slide rail, 51. second deviation cylinder, 52. buffer device, 53. guide roller. DETAILED DESCRIPTION

[0049] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0050] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0051] In the field of fabric processing, before entering the dyeing and finishing process, multiple sections of fabric need to be sewn together end to end, and the sewing position is the fabric seam head, so that the multiple sections of fabric form a continuous and uninterrupted state and enter the process section for dyeing and finishing. Since the materials of the multiple sections of fabric are different, after the fabric is dyed and finished, the seam heads at the sewing position of the two sections of fabric need to be torn off. In order to replace manual tearing of fabric, the present invention designs a fully automatic fabric dropping and tearing device for flat-width flexible fabric.

[0052] like Figures 1 to 9 As shown, a fully automatic cloth dropping and tearing device for flat flexible cloth comprises a rotary cloth tearing device (1), a cantilever bracket (2), a first clamping head assembly (21), a second clamping head assembly (22), a cutter assembly, a guide roller, and a seam end recognition system.

[0053] The cantilever bracket (2) is arranged on the main bracket (6) and is located on the front side of the main bracket (6).

[0054] The first chuck assembly (21) is arranged on the cantilever bracket (2), and the second chuck assembly (22) is arranged on the main bracket (6). The first chuck assembly (21) is arranged above the second chuck assembly (22). The first chuck assembly (21) is used to clamp the upper part of the cloth, and the cloth of the second chuck assembly (22) is used to clamp the lower part of the cloth. The length direction of the cloth between the first chuck assembly (21) and the second chuck assembly (22) is perpendicular to the horizontal plane. The first chuck assembly (21) and the second chuck assembly (22) have the same structure and both include two groups of clamping jaws with opposite movement directions, which can clamp the cloth.

[0055] The cutting knife assembly comprises a cutting knife support (23), a first cutting knife (24), a second cutting knife (25) and a first sensor. The cutting knife support (23) is arranged on the cantilever support (2) and located between the first chuck assembly (21) and the second chuck assembly (22). The first cutting knife (24) and the second cutting knife (25) are arranged on the cutting knife support (23), and the first cutting knife (24) is located above the second cutting knife (25). The first cutting knife (24) is used for cutting the upper edge of the cloth, and the second cutting knife (25) is used for cutting the lower edge of the cloth, so that the cloth edge forms a cut of 50mm to 100mm in length. The first cutting knife (24) and the second cutting knife (25) are each provided with a first sensor for monitoring the position of the cloth edge to ensure the cutting effect.

[0056] The rotating cloth tearing device (1) comprises a rotating cloth tearing chuck (3), a straight line walking support (4) and a straight line walking driving mechanism (5). The straight line walking support (4) is arranged on the main body support (6) and comprises a cloth tearing assembly track (8) and a cloth tearing assembly rack (7) arranged on one side of the cloth tearing assembly track (8). The straight line walking driving mechanism (5) comprises a cloth tearing driving motor (9) and a chuck support (10). The chuck support (10) is arranged on the cloth tearing assembly track (8) and is provided with a sliding block matched with the cloth tearing assembly track (8), so that the chuck support (10) can slide freely on the cloth tearing assembly track (8). The cloth tearing driving motor (9) is arranged on the chuck support (10) and is engaged with the cloth tearing assembly rack (7) through a gear, so that the cloth tearing driving motor (9) can drive the chuck support (10) to slide along the cloth tearing assembly track (8) in cooperation with the cloth tearing assembly rack (7).

[0057] The rotating cloth tearing chuck (3) comprises a chuck fixed part (11), a chuck moving part (12), a chuck cylinder (13), a fixed jaw (14) and a moving jaw (15). The chuck fixed part (11) is arranged on the chuck support (10) and can move together with the chuck support (10) on the walking support. The chuck fixed part (11) and the chuck moving part (12) are located between the first cutting knife (24) assembly and the second cutting knife (25) assembly of the cutting knife assembly. The chuck cylinder (13) is fixedly arranged on the chuck fixed part (11).

[0058] The clamp moving part (12) is located on one side of the clamp fixed part (11), and the end of the piston rod of the clamp cylinder (13) is connected with the clamp moving part (12). The clamp moving part (12) is driven to move away from or close to the clamp fixed part (11) by the extension or retraction of the piston rod of the clamp cylinder (13). The fixed jaw (14) is arranged on the clamp fixed part (11), and the moving jaw (15) is arranged on the clamp moving part (12). The moving jaw (15) is arranged opposite to the fixed jaw (14). When the piston rod of the clamp cylinder (13) retracts, the clamp moving part (12) drives the moving jaw (15) to move towards the fixed jaw (14), so that the cloth between the two jaws can be clamped. When the clamping is completed, the walking driving mechanism drives the rotating cloth tearing clamp (3) to move along the walking support, and the cloth joint after cutting is torn open.

[0059] The guide roller is arranged on the main body support (4) and located at the rear side of the rotating cloth tearing clamp (3). The guide roller is used for conveying the cloth to the position of the rotating cloth tearing clamp (3).

[0060] The joint recognition system includes a joint recognition sensor and a cloth running encoder. The joint recognition sensor is arranged on the main body support and located at the rear side of the guide roller. The joint recognition sensor can be arranged between the first cutter (24) and the second cutter (25), but the rotating cloth tearing clamp (3) will reciprocate between the first cutter (24) and the second cutter (25) during operation, which will affect the operation of the joint recognition sensor. Therefore, the joint recognition sensor is arranged on the main body support and located at the rear side of the guide roller, so as to exclude the influence of the rotating cloth tearing clamp (3). The joint recognition sensor is a CCD camera. Since the joint of the cloth has obvious stitching marks, the CCD camera can capture light signals and convert them into digital signals, so as to recognize the joint of the cloth and the joint of the cloth joint (3) and transmit the digital signals to the lower computer. The lower computer can control the operation of each device of the equipment to realize fully automatic operation.

[0061] The cloth running encoder is arranged on the guide roller and can measure the running distance of the cloth. When the joint recognition sensor recognizes the joint of the cloth during operation of the joint recognition system, the cloth running encoder starts to measure the running distance of the cloth. When the running distance of the cloth is S1, the cloth runs to the joint positioning point. The joint positioning point is the midpoint position of the first cutter (24) and the second cutter (25), and S1 is the actual running distance of the cloth from the joint recognition sensor to the joint positioning point. The actual value of S1 can be calculated in advance by measurement.

[0062] When the cloth head seam is carried to the head positioning point, first, the first clamp head assembly clamps the upper part of the cloth, and the second clamp head assembly clamps the lower part of the cloth. Then, the cloth tearing driving motor (9) of the rotary cloth tearing device (1) is started to move the fixed part (11) and the moving part (12) of the rotary cloth tearing clamp (3) to the cloth direction until the cloth edge is located between the fixed jaw (14) and the moving jaw (15), the piston rod of the clamp cylinder (13) is retracted to move the moving part (12) towards the fixed part (11), the fixed jaw (14) and the moving jaw (15) clamp the cloth, after the clamping of the cloth is completed, the first cutter (24) of the cutter assembly cuts the cloth edge between the first clamp and the rotary cloth tearing device (1), and the second cutter (25) cuts the cloth edge between the second clamp and the rotary cloth tearing device (1), so that the one side edge of the cloth forms two cuts.

[0063] Then the cloth tearing starts, the cloth tearing driving motor (9) of the rotary cloth tearing device (1) drives the rotary cloth tearing clamp (3) to move along the cloth tearing assembly track (8) to realize the cloth tearing process.

[0064] As a supplement to the above technical solution, the first clamp head assembly (21) and the second clamp head assembly (22) are the same structure, including a first clamp jaw (26), a second clamp jaw (27), a double-acting cylinder (28), and a cylinder bracket (29), the double-acting cylinder (28) is arranged on the cantilever bracket through the cylinder bracket (29), the double-acting cylinder (28) is a double-piston rod cylinder, including two groups of piston rods that can move in opposite directions, the first clamp jaw (26) is arranged at the end of the first piston rod, and the second clamp jaw (27) is arranged at the end of the second piston rod, the first clamp jaw (26) and the second clamp jaw (27) clamp the cloth through the double-acting cylinder (28).

[0065] As a preferred technical solution of the present application, the cutter assembly further comprises a cutter track (30), a cutter rack (31), and a cutter assembly driving motor (32), the cutter track (30) and the cutter rack (31) are arranged on the cantilever bracket (2).

[0066] The cutter bracket (23) is arranged on the cutter track (30) and can slide on the cutter track (30), the cutter assembly driving motor (32) is arranged on the cutter bracket (23) and connected with the cutter rack (31) through a gear, the cutter bracket (23) can be driven to slide on the cutter track (30) by the cutter assembly driving motor (32), and the length of the cut of the cloth by the first cutter (24) and the second cutter (25) is adjusted.

[0067] As a supplement to the above technical solution, the first cutter (24) and the second cutter (25) are arranged on the cutter bracket (23), the first cutter (24) and the second cutter (25) are arranged on the cutter bracket (23) and can slide on the cutter bracket (23), the first cutter (24) and the second cutter (25) are connected with the cutter rack (31) through gears, and the first cutter (24) and the second cutter (25) can be driven to slide on the cutter bracket (23) by the cutter assembly driving motor (32), and the length of the cut of the cloth by the first cutter (24) and the second cutter (25) is adjusted. Figure 6As shown, during the tearing process, the cloth fracture will extend along the length of the weft, in order to avoid the fracture extending to the cloth seam head and the range of the first clamp assembly (21) and the second clamp assembly (22), and the technical problem of affecting the tearing effect, ensuring that the stitched edge of the cloth is located at the midpoint position between the first cutter (24) and the second cutter (25), and satisfying the following formula:

[0068] L≥2H

[0069] In the above formula, L is the distance between the first cutter (24) and the second cutter (25), and H is the maximum weft inclination height of the cloth.

[0070] Through the above design, even if the cloth has weft inclination, the cloth fracture will not extend to the cloth seam head and the range of the first clamp assembly (21) and the second clamp assembly (22) during the tearing process.

[0071] As a preferred technical solution of the present application, the rotary tearing clamp (3) further comprises a clamp guide rod (16), one end of the clamp guide rod (16) is arranged on the clamp fixing part (11), and a guide sleeve for the clamp guide rod (16) to pass through is arranged on the clamp moving part (12), so that the lower part of the clamp guide rod (16) is located in the guide sleeve on the clamp moving part (12), and the clamp guide rod (16) is used for providing movement guidance for the movement of the clamp moving part (12).

[0072] As a preferred technical solution of the present application, it further comprises a hollow rotary platform (19), a clamp rotary driving mechanism (18), and a tearing clamp flange (17);

[0073] The hollow rotary platform (19) and the clamp rotary driving mechanism (18) are arranged on the clamp support (10), the hollow rotary platform (17) is connected with the clamp fixing part (11) through the tearing clamp flange (19), and the hollow rotary platform (17) rotates to drive the clamp fixing part (11) to rotate.

[0074] The clamp rotary driving mechanism comprises a rotary motor, and the rotary motor drives the hollow rotary platform (19) to rotate.

[0075] Through the arrangement of the hollow rotary platform (19) and the clamp rotary driving mechanism (18), the rotary tearing clamp (3) can realize the rotary function, under the condition that the width of the cloth is constant, the rotary tearing clamp (3) can realize the rotary and horizontal movement functions, and the seam head of the cloth can be wound on the rotary tearing clamp (3) during the rotary tearing process of the rotary tearing clamp (3).

[0076] The rotary tearing clamp (3) can realize the tearing function only by horizontal movement. The combination of rotation and horizontal movement can also be used, which can reduce the horizontal movement distance.

[0077] As a preferred technical scheme of the present application, the side edge of the chuck fixing part (11) is in an arc structure, the side edge of the chuck moving part (12) is in an arc structure, when the piston rod of the chuck cylinder (13) is retracted to make the fixed jaw (14) and the moving jaw (15) in a cloth clamping state, the chuck fixing part (11) and the chuck moving part (12) are combined, and the outer periphery of the rotary cloth tearing chuck (3) is in a circular structure.

[0078] In this structural design, the rotary cloth tearing chuck (3) adopts the combination of rotation and horizontal movement during the cloth tearing process, and when the fixed jaw (14) and the moving jaw (15) complete the cloth clamping state, the rotary cloth tearing chuck (3) rotates and horizontally moves at the same time to tear the cloth selvedge.

[0079] As a supplement to the above technical scheme, when the chuck fixing part (11) and the chuck moving part (12) are in the combined state, the diameter D of the rotary cloth tearing chuck (3) and the cloth width B satisfy the following relationship:

[0080] πD≥B

[0081] After the cloth tearing is completed, the cloth wound on the rotary cloth tearing chuck (3) is less than one turn, so that the jaw can be opened smoothly, and when the moving jaw (15) is loosened, the cloth can be freely detached from the rotary cloth tearing chuck (3).

[0082] In this process, the rotary linear speed V 转 of the rotary cloth tearing chuck (3) is set to be the same as the horizontal movement speed V 横 of the rotary cloth tearing chuck (3), so that the horizontal movement distance of the rotary cloth tearing chuck (3) is the same as the cloth width B. The cloth width is the width of the cloth. During the cloth tearing process, the cloth is wound on the outer surface of the rotary cloth tearing chuck (3). Through the above setting, the cloth tearing is completed at a constant angle α during the cloth tearing process, which ensures the stability of the cloth tearing, reduces the horizontal movement distance of the rotary cloth tearing chuck (3), saves the production cost of the equipment, and improves the space utilization. Compared with the rotary cloth tearing chuck (3) only horizontally moving for tearing, the horizontal movement distance is 2B, that is, the length of the guide rail on the straight line walking support (4) needs to be greater than 2B, and the tearing angle continuously decreases during the horizontal movement, which seriously affects the stability of the cloth tearing.

[0083] As a preferred technical scheme of the present application, the rotary cloth tearing device (1) further comprises a second sensor (20) arranged on the support of the straight line walking support (4) and used for monitoring the position of the chuck support (10) on the straight line walking support (4).

[0084] As a preferred technical scheme of the present application, the rotating tearing device (1) further comprises a third sensor arranged on the tearing chuck flange (17) of the rotating tearing device (1), which is used to detect whether the edge of the cloth selvedge reaches between the fixed jaw (14) and the moving jaw (15) on the rotating tearing chuck (3) during the movement of the rotating tearing chuck (3) towards the cloth selvedge, and when the third sensor detects the edge of the cloth selvedge, the chuck cylinder (13) retracts to make the fixed jaw (14) and the moving jaw (15) clamp the cloth selvedge.

[0085] As a preferred technical scheme of the present application, in order to realize the flat and wrinkle-free and non-skewed conveying of the cloth to the position of the rotating tearing device (1) and realize the accurate clamping of the cloth by the first chuck assembly (21) and the second chuck assembly (22), the full-automatic cloth falling and tearing device further comprises a cloth conveying traction assembly (33) and a width centering assembly (45), wherein the width centering assembly (45) comprises a transition roller (40).

[0086] The cloth conveying traction assembly (33) and the transition roller (40) are arranged on the main support (6),

[0087] The width centering assembly (45) is arranged at the rear of the main support (6) and comprises the transition roller (40), a first deviation correcting cylinder (41), a transition roller support (42), a transition roller sliding rail (43) and a first light curtain sensor (44). The transition roller (40) is arranged on the transition roller support (42), the transition roller sliding rail (43) is arranged on the main support (6), the transition roller support (42) is arranged on the transition roller sliding rail (43) and can slide on the transition roller sliding rail (43), and the piston rod of the first deviation correcting cylinder (41) is connected with the transition roller support (42) and used to drive the transition roller support (42) to slide on the transition roller sliding rail (43).

[0088] The first light curtain sensor (44) is arranged on the main support (6) and located at one side of the transition roller (40). The first light curtain sensor (44) comprises a light projector and a light receiver, and the cloth passes between the light projector and the light receiver. Since the widths of different kinds of cloth may be different, the cloth may deviate in the width direction. The first light curtain sensor (44) can monitor the deviation state of the cloth and transmit a signal to the first deviation correcting cylinder (41) to adjust the position of the transition roller support (42) so that the transition roller (40) drives the cloth to move and adjust the position of the cloth, thereby correcting the deviation of the cloth passing through the transition roller (40) and keeping the width center of the cloth on the cloth conveying center line, so as to avoid the wrinkle of the cloth during the cloth conveying.

[0089] The walking traction assembly (33) is arranged at the front of the main support (6) and above the rotary tearing device (1), and is used to deliver the cloth to the rotary tearing device (1), so that the cloth can be walked to the rotary tearing device (1) in a vertical direction. The walking traction assembly (33) comprises a traction motor (34), a traction roller (35), a traction cylinder (36), a lifting support (37) and a pressure roller (38). The traction roller (35) is arranged on the main support (6) and connected with the main support (6) through a bearing, so that the traction roller (35) can rotate freely. The traction motor (34) is connected with the traction roller (35) and drives the traction roller (35) to rotate.

[0090] The traction cylinder (36) is arranged on the main support (6), the lifting support (37) is arranged at the end of the piston rod of the traction cylinder (36), and the pressure roller (38) is arranged on the lifting support (37) and above the traction roller (35). The pressure roller (38) is connected with the lifting support (37) through a bearing, so that the pressure roller (38) can rotate freely.

[0091] The distance between the pressure roller (38) and the traction roller (35) is adjusted by the traction cylinder (36), so that sufficient traction force can be applied to the cloth.

[0092] As a supplement to the technical scheme of the application, a walking deviation correction assembly (39) is further included. During the movement of the cloth to the walking traction assembly (33), the cloth may deviate. The walking deviation correction assembly (39) is used to further correct the deviation of the cloth. The walking deviation correction assembly (39) is arranged on the main support (6) and between the door width centering assembly (45) and the walking traction assembly (33).

[0093] The walking deviation correction assembly (39) comprises a deviation correction shaft (46), a deviation correction support (47), a deviation correction motor (48), a second light curtain sensor (49), a deviation correction slide rail (50) and a second deviation correction cylinder (51).

[0094] The deviation correction shaft (46) and the deviation correction motor (48) are arranged on the deviation correction support (47). The deviation correction shaft (46) is connected with the deviation correction support (47) through a bearing, so that it can rotate freely. The deviation correction motor (48) is connected with the deviation correction shaft (46). The deviation correction slide rail (50) is arranged on the main support (6). The deviation correction support (47) is arranged on the deviation correction slide rail (50) and can slide on the deviation correction slide rail (50). The second deviation correction cylinder (51) is arranged on the main support (6), and the end of the piston rod of the second deviation correction cylinder (51) is connected with the deviation correction support (47), which is used to drive the deviation correction support (47) to slide on the deviation correction slide rail (50).

[0095] The second light curtain sensor (49) is arranged on the main body support (6) and located on one side of the walking track deviation correction assembly (39). The second light curtain sensor (49) has the same structure as the first light curtain sensor (44). The cloth passes between the light projector and the light receiver of the second light curtain sensor (49). Whether deviation occurs is monitored. When deviation occurs, the second deviation correction cylinder (51) drives the deviation correction support (47) to adjust the position and correct the deviation of the cloth.

[0096] Specifically, the deviation correction shaft (46) is provided with three groups, namely a first deviation correction shaft, a second deviation correction shaft and a third deviation correction shaft.

[0097] The walking path of the cloth on the walking track deviation correction assembly (39) is: sequentially passing through the third deviation correction shaft, the second deviation correction shaft, the first deviation correction shaft, and then entering into the walking track traction assembly (33).

[0098] The first deviation correction shaft, the second deviation correction shaft and the third deviation correction shaft are arranged on the deviation correction support (47) in the following manner: the first deviation correction shaft and the third deviation correction shaft are arranged in parallel and spaced apart from each other, the second deviation correction shaft is located between the first deviation correction shaft and the third deviation correction shaft and is located below the first deviation correction shaft and the third deviation correction shaft, the upper surfaces of the first deviation correction shaft and the third deviation correction shaft are in contact with the cloth, and the lower surface of the second deviation correction shaft is in contact with the cloth. Through the above arrangement, the contact between the deviation correction shaft (46) and the cloth is strengthened, the deviation correction effect is improved, the center of the cloth width is always on the walking center line, and wrinkles of the cloth during walking are avoided.

[0099] As a supplement to the above technical solution, a buffer device (52) is further included. The buffer device (52) is used for temporarily storing the cloth continuously produced by the production process section during the parking of the walking track deviation correction assembly (39), the walking track traction assembly (33) and the rotating cloth tearing device (1) at the position of the walking track deviation correction assembly (39). The buffer device (52) is provided with a containing space for containing the cloth, and is used for buffering the cloth.

[0100] The application further discloses a use method of the full-automatic flat flexible cloth falling and tearing device.

[0101] S1. Start the deviation correction motor (48) of the walking track deviation correction assembly (39) and the traction motor (34) of the walking track traction assembly (33).

[0102] The cloth first enters into the door width centering assembly (45). The door width centering assembly (45) adjusts and positions the door width centering of the cloth. The first light curtain sensor (44) cooperates with the first deviation correction cylinder (41) to realize the door width centering of the cloth.

[0103] Then the cloth enters into the walking track deviation correction assembly (39). The second light curtain sensor (49) cooperates with the second deviation correction cylinder (51) to realize the accurate walking track deviation correction of the cloth.

[0104] The cloth then enters into the walking belt traction assembly (33) which transports the cloth to the position of the rotary tearing device (1);

[0105] S2. When the cloth selvedge to be segmented is walked to the selvedge recognition sensor position, the cloth walking encoder starts to measure the cloth walking distance. When the cloth selvedge is walked to the selvedge positioning point, the deviation correction motor (48) of the walking deviation correction assembly (39) and the traction motor (34) of the walking traction assembly (33) are turned off, and the cloth temporarily accumulates in the buffer device (52) during the continuous production output of the production process section.

[0106] The first clamp assembly (21) clamps the upper part of the cloth, and the second clamp assembly (22) clamps the lower part of the cloth. The tearing drive motor (9) of the rotary tearing device (1) is started to move the clamp fixed part (11) and the clamp moving part (12) of the rotary tearing clamp (3) towards the cloth until the cloth edge is located between the fixed jaw (14) and the moving jaw (15). The piston rod of the clamp cylinder (13) retracts to move the clamp moving part (12) towards the clamp fixed part (11), so that the fixed jaw (14) and the moving jaw (15) clamp the cloth. After clamping the cloth, the first cutter (24) of the cutter assembly cuts the cloth edge between the first clamp assembly and the rotary tearing device (1), and the second cutter (25) cuts the cloth edge between the second clamp assembly and the rotary tearing device (1), so that the cloth edge on one side forms two cuts. Then the tearing drive motor (9) of the rotary tearing device (1) drives the rotary tearing clamp (3) to move along the tearing assembly track (8), and the clamp rotary drive mechanism (18) drives the rotary tearing clamp (3) to rotate, so that the rotary speed of the rotary tearing clamp (3) and the transverse speed of the rotary tearing clamp (3) satisfy the following relationship:

[0107] V 转 = V 横

[0108] In the above formula, V 转 is the linear speed of the outer periphery of the rotary tearing clamp (3), and V 横 is the transverse speed of the rotary tearing clamp (3).

[0109] S3. After tearing the cloth, the chuck cylinder (13) drives its piston rod to extend, so that the moving jaw (15) is away from the fixed jaw (14), so that the torn-off seam head is free to fall, the chuck rotary drive mechanism (18) and the straight-line walking drive jointly act to reset the rotary cloth tearing chuck (3); at the same time, the first chuck assembly (21) and the second chuck assembly (22) loosen the clamping of the cloth, the cloth material head clamped by the second chuck assembly (22) is free to fall into the material frame arranged below the second chuck assembly (22), and the cloth is stored; the material frame arranged below the second chuck assembly (22) is replaced with a new empty material frame for storing the next frame of cloth.

[0110] The deviation correction motor (48) of the walking belt deviation correction assembly (39) and the traction motor (34) of the walking belt traction assembly (33) are started again.

[0111] The traction motor (34) of the walking belt traction assembly (33) and the deviation correction motor (48) rotate, so that the cloth walking speed is lower than the cloth walking speed in the process section, the first material head after the cloth is torn off is stably and accurately conveyed to the new empty material frame through the cloth falling center;

[0112] The traction motor (34) of the walking belt traction assembly (33) and the deviation correction motor (48) rotate, so that the cloth walking speed is higher than the cloth walking speed in the process section, the cloth enters the unloading reciprocating material frame through the cloth falling center to stack and store at a speed higher than the vehicle speed, and at the same time, the cloth accumulated in the buffer device (52) when the vehicle stops is consumed;

[0113] The traction motor (34) of the walking belt traction assembly (33) and the deviation correction motor (48) rotate, so that the cloth walking speed is equal to the cloth walking speed in the process section, and the cloth enters the material frame through the cloth falling center to stack and store at the vehicle speed. The above-mentioned vehicle speed specifically refers to the actual production speed of the cloth.

[0114] Through the above method, the cloth is automatically changed in speed and walked, and the parking purpose is achieved.

[0115] The above is only a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A fully automatic cloth dropping and tearing device for flat flexible cloth, used for tearing cloth, characterized in that: It comprises a rotary cloth tearing device (1), a cantilever bracket (2), a main body bracket (6), a first clamping head assembly (21), a second clamping head assembly (22), a cutter assembly, a guide roller, and a seam end identification system; The cantilever bracket (2) is arranged on the main bracket (6) and is located on the front side of the main bracket (6); The first clamping assembly (21) is arranged on the cantilever bracket (2), the second clamping assembly (22) is arranged on the main bracket (6), and the first clamping assembly (21) is arranged above the second clamping assembly (22); The cutter assembly comprises a cutter support (23), a first cutter (24), and a second cutter (25); the cutter support (23) is arranged on the cantilever support (2) and is located between the first chuck assembly (21) and the second chuck assembly (22); the first cutter (24) and the second cutter (25) are both arranged on the cutter support (23); and the first cutter (24) is located above the second cutter (25); The rotary cloth-tearing device (1) comprises a rotary cloth-tearing chuck (3), a linear travel bracket (4), and a linear travel driving mechanism (5); the linear travel bracket (4) is arranged on a main body bracket (6), and comprises a cloth-tearing assembly rail (8), a cloth-tearing assembly rack (7), and the cloth-tearing assembly rack (7) is arranged on one side of the cloth-tearing assembly rail (8); the linear travel driving mechanism (5) comprises a cloth-tearing driving motor (9) and a chuck bracket (10); the chuck bracket (10) is arranged on the cloth-tearing assembly rail (8), the cloth-tearing driving motor (9) is arranged on the chuck bracket (10), and the cloth-tearing driving motor (9) is provided with a gear meshing with the cloth-tearing assembly rack (7); the rotary cloth-tearing chuck (3) comprises a chuck fixing portion (11), a chuck moving portion (12), a chuck cylinder (13), a fixed jaw (14), movable jaw (15); the chuck fixing part (11) is arranged on the chuck bracket (10), the chuck cylinder (13) is fixed on the chuck fixing part (11), the chuck moving part (12) is located on one side of the chuck fixing part (11), the end of the piston rod of the chuck cylinder (13) is connected to the chuck moving part (12), the chuck fixing part (11) and the chuck moving part (12) are both located between the first cutter (24) component and the second cutter (25) component of the cutter assembly, the fixed jaw (14) is arranged on the chuck fixing part (11), the movable jaw (15) is arranged on the chuck moving part (12), and the movable jaw (15) and the fixed jaw (14) are arranged opposite to each other; the guide roller is arranged on the main bracket (4) and is located at the rear side of the rotary cloth tearing chuck (3); The seam head recognition system includes a seam head recognition sensor and a fabric tape encoder. The seam head recognition sensor is arranged on the main body bracket and located at the rear side of the guide roller, and the fabric tape encoder is arranged on the guide roller.

2. The fully automatic cloth dropping and tearing device for open-width flexible cloth according to claim 1 is characterized in that: The first chuck assembly (21) and the second chuck assembly (22) have the same structure, comprising a first clamping jaw (26), a second clamping jaw (27), a bidirectional cylinder (28), and a cylinder bracket (29); the bidirectional cylinder (28) comprises two groups of piston rods capable of moving in opposite directions; the first clamping jaw (26) is arranged at the end of the first piston rod, and the second clamping jaw (27) is arranged at the end of the second piston rod; The rotary cloth tearing chuck (3) further comprises a chuck guide rod (16), one end of which is arranged on the chuck fixing portion (11), and a guide sleeve for the chuck guide rod (16) to pass through is provided on the chuck moving portion (12), and the lower portion of the chuck guide rod (16) is located in the guide sleeve on the chuck moving portion (12).

3. The fully automatic cloth dropping and tearing device for open-width flexible cloth according to claim 1 is characterized in that: The cutter assembly further comprises a cutter rail (30), a cutter rack (31), and a cutter assembly drive motor (32). The cutter rail (30) and the cutter rack (31) are both arranged on the cantilever bracket (2). The cutter bracket (23) is arranged on the cutter rail (30). The cutter assembly drive motor (32) is arranged on the cutter bracket (23) and is connected to the cutter rack (31) via a gear. The spacing between the first cutter (24) and the second cutter (25) should satisfy the following formula: L≥2H In the above formula, L is the distance between the first cutter (24) and the second cutter (25), and H is the maximum weft height of the cloth.

4. The fully automatic cloth dropping and tearing device for open-width flexible cloth according to claim 1 is characterized in that: The invention also includes a hollow rotating platform (19), a chuck rotating driving mechanism (18), and a cloth-tearing chuck flange (17); the hollow rotating platform (19) and the chuck rotating driving mechanism (18) are both arranged on the chuck bracket (10), and the hollow rotating platform (19) is connected to the chuck fixing part (11) through the cloth-tearing chuck flange (17); the chuck rotating driving mechanism (18) includes a rotating motor, which is connected to the hollow rotating platform (19) to drive the cloth-tearing chuck flange (17) to rotate, thereby driving the chuck fixing part (7) to rotate.

5. The fully automatic cloth dropping and tearing device for open-width flexible cloth according to claim 4 is characterized in that: The side edge of the clamp fixing portion (11) is an arc-shaped structure, and the side edge of the clamp moving portion (12) is an arc-shaped structure. When the piston rod of the clamp cylinder (13) retracts so that the fixed jaw (14) and the movable jaw (15) are in a state of clamping the cloth, the clamp fixing portion (11) and the clamp moving portion (12) are combined, and the outer periphery of the rotary cloth tearing clamp (3) is a circular structure.

6. The fully automatic cloth dropping and tearing device for open-width flexible cloth according to claim 5 is characterized in that: When the clamp fixing portion (11) and the clamp moving portion (12) are in a combined state, the relationship between the diameter of the rotary cloth-tearing clamp (3) and the cloth width satisfies: πD≥B In the above formula, D is the diameter of the rotary cloth tearing chuck (3), and B is the cloth width; The rotation speed of the rotary cloth-tearing chuck (3) and the lateral movement speed of the rotary cloth-tearing chuck (3) satisfy the following relationship: V 转 =V 横 In the above formula, V 转 V is the linear velocity of the outer periphery of the rotating cloth tearing chuck (3), 横 It is the traverse speed of the rotating cloth-tearing chuck (3) on the cloth-tearing assembly rail (8).

7. The fully automatic cloth dropping and tearing device for open-width flexible cloth according to claim 4 is characterized in that: It also includes a second sensor (20), which is arranged on a bracket of the linear travel bracket (4).

8. The fully automatic cloth dropping and tearing device for open-width flexible cloth according to claim 6 is characterized in that: It also includes a belt-walking traction component (33) and a door width centering component (45); The door width centering component (45) is arranged at the rear of the main frame (6), and includes a transition roller (40), a first deviation-correcting cylinder (41), a transition roller bracket (42), a transition roller slide rail (43), and a first light curtain sensor (44). The transition roller (40) is arranged on the transition roller bracket (42), the transition roller slide rail (43) is arranged on the main frame (6), the transition roller bracket (42) is arranged on the transition roller slide rail (43), and the piston rod of the first deviation-correcting cylinder (41) is connected to the transition roller bracket (42); the first light curtain sensor (44) is arranged on the main frame (6) and is located on one side of the transition roller (40). The first light curtain sensor (44) includes a light projector and a light receiver, and the cloth passes between the light projector and the light receiver of the first light curtain sensor (44); The tape traction assembly (33) is arranged at the front of the main frame (6) and located above the rotary cloth tearing device (1), and comprises a traction motor (34), a traction roller (35), a traction cylinder (36), a lifting platform (37), and a pressure roller (38). The traction roller (35) is arranged on the main frame (6) and connected to the main frame (6) through a bearing. The traction motor (34) is connected to the traction roller (35). The traction cylinder (36) is arranged on the main frame (6). The lifting platform (37) is arranged at the end of the piston rod of the traction cylinder (36). The pressure roller (38) is arranged on the lifting platform (37) and located above the traction roller (35). The pressure roller (38) is connected to the lifting platform (37) through a bearing.

9. The fully automatic cloth dropping and tearing device for open-width flexible cloth according to claim 8 is characterized in that: The belt deflection correction component (39) is also included; the belt deflection correction component (39) is arranged on the main frame (6) and is located between the belt traction component (33) and the door width centering component (45), and includes a deflection correction shaft (46), a deflection correction bracket (47), a deflection correction motor (48), a second light curtain sensor (49), a deflection correction slide rail (50), and a second deflection correction cylinder (51); the deflection correction shaft (46) and the deflection correction motor (48) are both arranged on the deflection correction bracket (47), the deflection correction motor (48) is connected to the deflection correction shaft (46), and the deflection correction slide rail (50) is provided. The deflection correction bracket (47) is placed on the main bracket (6), the deflection correction bracket (47) is arranged on the deflection correction slide rail (50), the second deflection correction cylinder (51) is arranged on the main bracket (6), and the end of the piston rod of the second deflection correction cylinder (51) is connected to the deflection correction bracket (47); the second light curtain sensor (49) is arranged on the main bracket (6) and is located on one side of the belt guide deflection correction component (39), the second light curtain sensor (49) has the same structure as the first light curtain sensor (44), and the cloth passes between the projector and the light receiver of the second light curtain sensor (49).

10. The method for using the fully automatic cloth dropping and tearing device for open-width flexible cloth according to claim 9, characterized in that: The following steps are involved: S1. Turn on the guide belt deflection correction component (39) of the correction motor (48) and the guide belt traction component (33) of the traction motor (34), The cloth first enters the width centering assembly (45), and the width centering assembly (45) adjusts and positions the cloth for width centering. The first light curtain sensor (44) cooperates with the first deviation correction cylinder (41) to achieve preliminary deviation correction of the cloth. The cloth then enters the belt deviation correction component (39), and the second light curtain sensor (49) cooperates with the second deviation correction cylinder (51) to achieve accurate belt deviation correction for the cloth; The cloth then enters the belt-drawing assembly (33), which transports the cloth to the position of the rotary cloth-tearing device (1); S2. When the seam head recognition sensor identifies the seam head of the fabric, the fabric tape encoder measures the distance the fabric is traveling. When the seam head of the fabric is traveling to the middle position between the first cutter (24) and the second cutter (25), the correction motor (48) of the tape correction assembly (39) and the traction motor (34) of the tape traction assembly (33) are turned off. The first clamping head assembly (21) is driven to clamp the upper part of the cloth, and the second clamping head assembly (22) is driven to clamp the lower part of the cloth. The cloth tearing driving motor (9) of the rotary cloth tearing device (1) is started, so that the clamping head fixed part (11) and the clamping head movable part (12) of the rotary cloth tearing clamping head (3) are moved toward the cloth until the edge of the cloth is located between the fixed jaw (14) and the movable jaw (15). The clamping head cylinder (13) is operated to clamp the fixed jaw (14) and the movable jaw (15) to clamp the cloth. Then, the first cutter (24) of the cutter assembly is moved to the position of the first clamping head assembly (2 1) and the rotary cloth-tearing device (1), and the second cutter (25) cuts the edge of the cloth between the second clamping head assembly (22) and the rotary cloth-tearing device (1), so that two cuts are formed on the edge of one side of the cloth; then the cloth-tearing driving motor (9) of the rotary cloth-tearing device (1) drives the rotary cloth-tearing clamping head (3) to move along the cloth-tearing assembly rail (8), and at the same time, the clamping head rotation driving mechanism (18) drives the rotary cloth-tearing clamping head (3) to rotate, so that the rotation speed of the rotary cloth-tearing clamping head (3) and the lateral movement speed of the rotary cloth-tearing clamping head (3) satisfy the following relationship: V 转 =V 横 In the above formula, V 转 V is the linear velocity of the outer periphery of the rotating cloth tearing chuck (3), 横 is the traverse speed of the rotating cloth-tearing chuck (3) on the cloth-tearing assembly rail (8); S3. After the cloth tearing is completed, the chuck cylinder (13) drives its piston rod to extend, so that the movable jaw (15) moves away from the fixed jaw (14), allowing the torn cloth to fall freely. The chuck rotation drive mechanism (18) and the linear travel drive work together to reset the rotary cloth tearing chuck (3); the first chuck assembly (21) and the second chuck assembly (22) release the grip on the cloth.

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