Cloth rolling mechanism for flame-retardant fabric

By integrating detection, ironing, and drying components into the fabric rolling mechanism, the problem of wrinkle treatment in flame-retardant fabrics has been solved, resulting in improved fabric smoothness and performance.

CN121376697APending Publication Date: 2026-01-23NANTONG 3H SAFETY TECH CO LTD
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Patent Information

Application Number
CN202511516625.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-23
Publication Date
2026-01-23

AI Technical Summary

Technical Problem

Existing fabric rolling mechanisms cannot detect and handle wrinkles in flame-retardant fabrics, resulting in poor performance of the rolled-up fabric.

Method used

A fabric rolling mechanism for flame-retardant fabrics has been designed, integrating a detection component, an ironing structure, and a drying component. It can detect wrinkles during the rolling process and iron them out using the ironing component, and then dry them using the drying component to ensure the smoothness of the fabric.

Benefits of technology

Effective detection and handling of fabric wrinkles improves fabric smoothness and performance, avoids the negative impact of wrinkles, and increases the functionality of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the field of fabrics, and discloses a cloth rolling mechanism for flame-retardant fabrics, the cloth rolling mechanism comprises a cloth rolling rack, the top of the cloth rolling rack is sequentially provided with a cloth guiding structure, an ironing structure and a driving structure, the ironing structure comprises a supporting frame for supporting, and the supporting frame is provided with a moving assembly; the moving assembly drives the support rod to move, an ironing assembly used for ironing and a drying assembly are installed on the support rod, a detection assembly is further installed on the supporting frame, and a third cloth guide roller is further arranged at one end of the supporting frame. The detection assembly and the ironing structure are arranged, the detection assembly can detect wrinkles of the fabric in the winding process, after the wrinkles are detected, the ironing assembly in the ironing structure can conduct ironing treatment on the wrinkles of the fabric, after ironing is finished, the drying assembly can conduct drying treatment on the ironed fabric, the fabric is prevented from being moist, and the fabric is not prone to being damaged. And the functionality of the equipment is improved.
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Description

Technical Field

[0001] This invention relates to the field of fabrics, and in particular to a fabric rolling mechanism for flame-retardant fabrics. Background Technology

[0002] Flame-retardant fabrics are textiles that possess fire-retardant properties through special treatment or the inherent characteristics of the material itself. After the flame-retardant fabric is processed and formed, a fabric rolling mechanism is required to roll up the flame-retardant fabric. The surface of flame-retardant fabrics may have wrinkles, which the fabric rolling mechanism cannot detect. The rolling mechanism will then roll up the wrinkled fabric, which will affect the later use effect of the flame-retardant fabric and result in insufficient functionality. Summary of the Invention

[0003] To address the problems mentioned in the background art, the present invention provides a fabric rolling mechanism for flame-retardant fabrics.

[0004] The present invention provides a fabric rolling mechanism for flame-retardant fabrics, which adopts the following technical solution: A fabric rolling mechanism for flame-retardant fabric includes a fabric rolling frame. A fabric guiding structure, an ironing structure, and a driving structure are sequentially mounted on the top of the fabric rolling frame. The ironing structure includes a support frame for support, on which a moving component is mounted. The moving component drives a support rod to move. An ironing component and a drying component for ironing are mounted on the support rod. A detection component is also mounted on the support frame. A third fabric guiding roller is provided at one end of the support frame. A guide plate is mounted on one side of the driving structure. A pressing structure for pressing and fixing the edge of the fabric is mounted on the guide plate. A communicating slot is formed on the guide plate. A cutting structure for cutting the fabric is provided at the bottom of the guide plate. A receiving frame is provided on one side of the guide plate.

[0005] Preferably, a first guide roller is installed at one end of the support frame, and a second guide roller is installed at the other end of the support frame. A connecting plate is fixedly installed between the inner walls of the support frame, and two second cylinders are installed on the top of the connecting plate. The output ends of the second cylinders are fixedly installed between the support plate and the connecting plate.

[0006] Preferably, the movable component includes a fourth fixing block installed on the outer wall of the support frame, a fifth cylinder is fixedly installed at one end of the fourth fixing block, the output end of the fifth cylinder is fixedly installed between the fifth cylinder and the guide seat, and a movable flange is provided at one end of the guide seat, and the movable flange moves in a movable groove opened on the outer wall of the support frame.

[0007] Preferably, the ironing assembly includes two first mounting blocks mounted on the top of the support rod. A second servo motor is mounted on one of the first mounting blocks, the output end of which is connected to one end of a second lead screw. The other end of the second lead screw is mounted to a bearing seat on the other first mounting block via a bearing. The second lead screw is fitted to a second thread sleeve block. A protrusion is provided on the top of the second thread sleeve block, and a guide rod extends through a through hole in the protrusion. Both ends of the guide rod are connected to corresponding positioning blocks. A sixth cylinder is mounted on the side wall of the second thread sleeve block, and the output end of the sixth cylinder is fixedly mounted to an ironing block. The air inlet on the ironing block is connected to an interface on the ironing machine via a hose.

[0008] Preferably, the drying assembly includes two second mounting blocks mounted on a support rod. A third servo motor is mounted on one of the second mounting blocks, the output end of which is connected to one end of a third lead screw. The other end of the third lead screw is mounted to a bearing seat on the other second mounting block via a bearing. The third lead screw is also fitted to a third threaded sleeve block. A protrusion is provided on the top of the third threaded sleeve block, and a guide rod extends through a through hole in the protrusion. Both ends of the guide rod are connected to corresponding positioning blocks. An eighth cylinder is provided on the side wall of the third threaded sleeve block, and the output end of the eighth cylinder is fixedly mounted to an air outlet plate. One end of the air outlet plate is connected to a flexible hot air blower.

[0009] Preferably, a seventh cylinder is mounted on the support rod, and the output end of the seventh cylinder is fixedly installed between it and the clamping bar.

[0010] Preferably, the drive structure includes a drive motor mounted on a support base, the output end of the drive motor being fixedly mounted between a drive gear and a first transmission roller, one end of the drive gear being mounted between the drive gear and a driven gear, the driven gear being mounted between the driven gear and a second transmission roller, a U-shaped frame mounted on one end of the support base, a first fixing block mounted on the top of the U-shaped frame, a first cylinder mounted on the first fixing block, the output end of the first cylinder being fixedly mounted between a pusher plate, a positioning rod fixedly mounted between the support bases, a moving block provided on the positioning rod, a limit strip provided on the top of the moving block, and a tightening bolt for tightening and fixing provided on the moving block.

[0011] Preferably, the clamping structure includes a second fixing block fixedly installed on the top of the guide plate, a third cylinder fixedly installed at one end of the second fixing block, the output end of the third cylinder fixedly installed between the third cylinder and the L-shaped block, a fourth cylinder fixedly installed on the top of the L-shaped block, the output end of the fourth cylinder fixedly installed between the fourth cylinder and the U-shaped block, and a guide groove is provided at the bottom of the U-shaped block.

[0012] Preferably, the cutting structure includes a third fixing block fixedly installed at the bottom of the guide plate. A first servo motor is fixedly installed at one end of the third fixing block. The output end of the first servo motor is connected to one end of the first lead screw. The other end of the first lead screw is installed with a bearing seat on another third fixing block through a bearing. The first lead screw and the first thread sleeve block are fitted together. A cutting blade is provided on the top of the first thread sleeve block.

[0013] In summary, the present invention has the following beneficial technical effects: 1. The present invention is equipped with a detection component and an ironing structure. The detection component can detect the wrinkles of the fabric during the winding process. After the wrinkles are detected, the ironing component in the ironing structure can iron the wrinkled parts of the fabric. After ironing, the drying component can dry the ironed fabric to avoid the fabric from being damp, thus increasing the functionality of the equipment. 2. The present invention has a pressing structure at the guide plate. The third cylinder in the pressing structure can drive the L-shaped block to move. The fourth cylinder on the L-shaped block drives the U-shaped block to move downward. The U-shaped block can press and fix the edge of the fabric, which can increase the flatness of the fabric when the cutting structure cuts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a fabric rolling mechanism for flame-retardant fabric in an embodiment of the present invention; Figure 2 This is a schematic diagram of the positional structure of the driving structure in an embodiment of the present invention; Figure 3 This is a schematic diagram of the position and structure of the support plate in an embodiment of the present invention; Figure 4 This is a schematic diagram of the position of the cutting structure in an embodiment of the present invention; Figure 5 This is an embodiment of the present invention. Figure 1 Enlarged view of the structure at point A; Figure 6 This is a schematic diagram of the ironing structure in an embodiment of the present invention.

[0015] Explanation of reference numerals in the attached drawings: 1. Fabric rolling frame; 2. Fabric guiding structure; 3. First guide roller; 4. Second guide roller; 5. Third guide roller; 6. First fixing block; 7. First cylinder; 8. Ironing structure; 81. First mounting block; 82. Fourth fixing block; 83. Guide seat; 84. Moving groove; 85. Fifth cylinder; 86. Second servo motor; 87. Second lead screw; 88. Second lead sleeve block; 89. Sixth cylinder; 810. Ironing block; 811. Support rod; 812. Seventh cylinder; 813. Second mounting block; 814. Third servo motor; 815. Third lead sleeve block; 816. Air outlet plate; 817. Eighth cylinder; 818. Three lead screws; 819. Pressing bar; 9. Push plate; 10. Receiving frame; 11. U-shaped frame; 12. Drive motor; 13. Drive gear; 14. First transmission roller; 15. Driven gear; 16. Second transmission roller; 17. Support plate; 18. Detection assembly; 19. Connecting plate; 20. Second cylinder; 21. Positioning rod; 22. Moving block; 23. Limiting bar; 24. Second fixing block; 25. Third cylinder; 26. L-shaped block; 27. Fourth cylinder; 28. U-shaped block; 29. ​​Slot; 30. Guide groove; 31. Cutting knife; 32. Third fixing block; 33. First servo motor; 34. First lead screw; 35. First lead sleeve block. Detailed Implementation

[0016] The following is in conjunction with the appendix Figures 1-6 The present invention will be described in further detail below.

[0017] Reference Figures 1-6This invention discloses a fabric rolling mechanism for flame-retardant fabrics, including a fabric rolling frame 1. A fabric guide structure 2, an ironing structure 8, and a driving structure are sequentially mounted on the top of the fabric rolling frame 1. The ironing structure 8 includes a support frame for support, on which a moving component is mounted. The moving component drives a support rod 811 to move. An ironing component and a drying component for ironing are mounted on the support rod 811. A detection component 18 is also mounted on the support frame. A third fabric guide roller 5 is provided at one end of the support frame. A guide plate is mounted on one side of the driving structure. A pressing structure for pressing and fixing the edge of the fabric is mounted on the guide plate. A communicating slot 29 is provided on the guide plate. A cutting structure for cutting the fabric is provided at the bottom of the guide plate. A receiving frame 10 is provided on one side. A first guide roller 3 is installed at one end of the support frame, and a second guide roller 4 is installed at the other end of the support frame. A connecting plate 19 is fixedly installed between the inner walls of the support frame. Two second cylinders 20 are installed on the top of the connecting plate 19. The output end of the second cylinder 20 is fixedly installed between the support plate 17 and the moving component includes a fourth fixing block 82 installed on the outer wall of the support frame. A fifth cylinder 85 is fixedly installed at one end of the fourth fixing block 82. The output end of the fifth cylinder 85 is fixedly installed between the guide seat 83 and the guide seat 83 has a moving flange at one end, and the moving flange moves within a moving groove 84 opened on the outer wall of the support frame. The ironing component includes two first mounting blocks 81 installed on the top of the support rod 811. A second servo motor 86 is mounted on one of the first mounting blocks 81. The output end of the second servo motor 86 is connected to one end of a second lead screw 87, and the other end of the second lead screw 87 is mounted to a bearing seat on another first mounting block 81 via a bearing. The second lead screw 87 is fitted to a second threaded sleeve block 88. A protrusion is provided on the top of the second threaded sleeve block 88, and a guide rod extends through a through hole in the protrusion. The two ends of the guide rod are connected to corresponding positioning blocks. A sixth cylinder 89 is mounted on the side wall of the second threaded sleeve block 88. The output end of the sixth cylinder 89 is fixedly mounted to an ironing block 810. The air inlet on the ironing block 810 is connected to an interface on an ironing machine via a hose. The drying assembly includes two components mounted on the support rod 811. The second mounting block 813 has a third servo motor 814 mounted on it. The output end of the third servo motor 814 is connected to one end of the third lead screw 818, and the other end of the third lead screw 818 is mounted to a bearing seat on another second mounting block 813 via a bearing. The third lead screw 818 is also fitted to a third threaded sleeve block 815. The top of the third threaded sleeve block 815 has a protrusion, and a guide rod passes through a through hole in the protrusion. The two ends of the guide rod are connected to corresponding positioning blocks. An eighth cylinder 817 is mounted on the side wall of the third threaded sleeve block 815. The output end of the eighth cylinder 817 is fixedly mounted to an air outlet plate 816. One end of the air outlet plate 816 is connected to a hose hot air blower.A seventh cylinder 812 is mounted on the support rod 811. The output end of the seventh cylinder 812 is fixedly installed between it and the pressing strip 819. When the detection component 18 detects wrinkles on the fabric, the alarm sounds, the equipment stops operating, and the operator manually moves the wrinkled area of ​​the fabric slowly to the position of the ironing structure 8. The second cylinder 20 on the connecting plate 19 then operates, moving the support plate 17 upward to the appropriate position. Then, the two seventh cylinders 812 on the support rod 811 operate, moving the pressing strip 819 downward, pressing the fabric against the support plate 17. The sixth cylinder 89 on the second yarn sleeve block 88 operates, moving the ironing block 810 downward, bringing it into contact with the fabric. Then, the second servo motor 86 operates, driving the second threaded block 88 to move, allowing the ironing block 810 to iron the wrinkles in the fabric. Simultaneously, the fifth cylinder 85 in the moving assembly operates, moving the guide seat 83 to adjust the position of the ironing block 810. After ironing, the moving structure operates again to adjust the position of the air outlet plate 816. Then, the third servo motor 814 on the second mounting block 813 operates, driving the third lead screw 818 to rotate. As the third lead screw 818 rotates, the corresponding third threaded block 815 moves to the appropriate position. The hot air blower operates, and the hot air from the air outlet plate 816 dries the fabric at the ironed area. After drying, the fabric rolling process continues.

[0018] See Figure 1 and Figure 2 The drive structure includes a drive motor 12 mounted on a support base, the output end of the drive motor 12 being fixedly mounted between a drive gear 13 and a first transmission roller 14, the drive gear 13 being meshed with a driven gear 15, the driven gear 15 being mounted with a second transmission roller 16, a U-shaped frame 11 mounted on one end of the support base, a first fixing block 6 mounted on the top of the U-shaped frame 11, a first cylinder 7 mounted on the first fixing block 6, the output end of the first cylinder 7 being fixedly mounted between a pusher plate 9, a positioning rod 21 fixedly mounted between the support bases, a moving block 22 mounted on the positioning rod 21, a limit strip 23 mounted on the top of the moving block 22, and a tightening bolt for tightening and fixing on the moving block 22.

[0019] See Figure 1 , Figure 4 and Figure 5The clamping structure includes a second fixing block 24 fixedly installed on the top of the guide plate. A third cylinder 25 is fixedly installed at one end of the second fixing block 24. The output end of the third cylinder 25 is fixedly installed between the third cylinder 25 and an L-shaped block 26. A fourth cylinder 27 is fixedly installed on the top of the L-shaped block 26. The output end of the fourth cylinder 27 is fixedly installed between the fourth cylinder 27 and a U-shaped block 28. A guide groove 30 is provided at the bottom of the U-shaped block 28. The cutting structure includes a third fixing block 32 fixedly installed on the bottom of the guide plate. A first servo motor 33 is fixedly installed at one end of the third fixing block 32. The output end of the first servo motor 33 is connected to one end of a first lead screw 34. The other end of the first lead screw 34 is installed with a bearing seat on another third fixing block 32 via a bearing. The lead screw 34 is fitted with the first thread sleeve block 35. The top of the first thread sleeve block 35 is equipped with a cutting blade 31. When the first cylinder 7 is working, it drives the pusher plate 9 to move and push the rolled-up fabric to the take-up frame 10. Then, the third cylinder 25 in the pressing structure is working, which drives the L-shaped block 26 to move. After the L-shaped block 26 moves to the appropriate position, the fourth cylinder 27 is working, which drives the U-shaped block 28 to move downward. The U-shaped block 28 presses the edge of the fabric. The first servo motor 33 in the cutting structure is working, which drives the first lead screw 34 to rotate. When the first lead screw 34 rotates, the corresponding first thread sleeve block 35 will move, and the cutting blade 31 on the first thread sleeve block 35 will cut the fabric.

[0020] The implementation principle of a fabric rolling mechanism for flame-retardant fabric in this embodiment of the invention is as follows: the fabric sequentially passes through the guide rollers on the guide structure 2, the first guide roller 3, the second guide roller 4, and the third guide roller 5, and is rolled up by the winding rollers on the first transmission roller 14 and the second transmission roller 16. During the winding process, when the detection component 18 detects wrinkles on the fabric, the alarm will sound, the equipment will stop running, and the operator will manually move the wrinkled part of the fabric to the position of the ironing structure 8. The second cylinder 20 on the connecting plate 19 will then operate, driving the support plate. 17 moves upward to the appropriate position, then the two seventh cylinders 812 on the support rod 811 operate, driving the pressing bar 819 downward. The pressing bar 819 will press the fabric onto the support plate 17. The sixth cylinder 89 on the second yarn sleeve block 88 operates, driving the ironing block 810 downward, so that the ironing block 810 contacts the fabric. Then, the second servo motor 86 operates, driving the second yarn sleeve block 88 to move, so that the ironing block 810 irons the wrinkles of the fabric. At the same time, the fifth cylinder 85 in the moving assembly operates, driving the guide seat 83 to move. The position of the ironing block 810 can be adjusted. After ironing, the moving structure works again to adjust the position of the air outlet plate 816. Then, the third servo motor 814 on the second mounting block 813 works, driving the third lead screw 818 to rotate. As the third lead screw 818 rotates, the corresponding third lead sleeve block 815 moves to the appropriate position. The hot air blower works, and the hot air from the air outlet plate 816 dries the fabric at the ironed area. After drying, the fabric rolling work continues. After the rolling is completed, the first cylinder 7 works, driving the pusher plate 9 to move. The first cylinder 25 in the pressing structure moves the rolled-up fabric to the take-up frame 10. Then, the third cylinder 25 in the pressing structure works, driving the L-shaped block 26 to move. After the L-shaped block 26 moves to the appropriate position, the fourth cylinder 27 works, driving the U-shaped block 28 to move downward. The U-shaped block 28 presses the edge of the fabric. The first servo motor 33 in the cutting structure works, driving the first lead screw 34 to rotate. While the first lead screw 34 rotates, the corresponding first thread sleeve block 35 moves. The cutting blade 31 on the first thread sleeve block 35 will cut the fabric, thus completing the work.

[0021] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A take-up mechanism for a flame resistant fabric comprising a take-up frame (1), characterized in that: The top of the cloth rolling frame (1) is sequentially provided with a cloth guiding structure (2), an ironing structure (8) and a driving structure, the ironing structure (8) comprises a support frame for supporting, a moving assembly is installed on the support frame, and the moving assembly drives a support rod (811) to move, an ironing assembly and a drying assembly for ironing are installed on the support rod (811), a detection assembly (18) is further installed on the support frame, one end of the support frame is further provided with a third cloth guiding roller (5), a guide plate is installed on one side of the driving structure, a pressing structure for pressing and fixing the edge of the fabric is installed on the guide plate, a communicating groove (29) is formed in the guide plate, a cutting structure for cutting the fabric is arranged at the bottom of the guide plate, and a material collecting frame (10) is arranged on one side of the guide plate.

2. A take-up mechanism for a flame resistant fabric according to claim 1, wherein: One end of the support frame is provided with a first cloth guiding roller (3), and the other end of the support frame is provided with a second cloth guiding roller (4), a connecting plate (19) is fixedly installed between the inner walls of the support frame, and two second air cylinders (20) are installed on the top of the connecting plate (19).

3. A take-up mechanism for flame resistant fabric according to claim 1, wherein: The moving assembly comprises a fourth fixed block (82) installed on the outer wall of the support frame, one end of the fourth fixed block (82) is fixedly provided with a fifth air cylinder (85), and the output end of the fifth air cylinder (85) is fixedly connected with a guide seat (83), one end of the guide seat (83) is provided with a moving flange, and the moving flange moves in the moving groove (84) formed in the outer wall of the support frame.

4. A take-up mechanism for flame resistant fabric according to claim 1, wherein: The ironing assembly comprises two first mounting blocks (81) installed on the top of the support rod (811), one of the first mounting blocks (81) is provided with a second servo motor (86), the output end of the second servo motor (86) is connected with one end of a second lead screw (87), the other end of the second lead screw (87) is connected with a bearing seat on the other first mounting block (81) through a bearing, the second lead screw (87) is adaptively connected with a second sleeve block (88), the top of the second sleeve block (88) is provided with a protruding block, a guide rod passes through the through hole formed in the protruding block, both ends of the guide rod are connected with corresponding positioning blocks, a sixth air cylinder (89) is installed on the side wall of the second sleeve block (88), the output end of the sixth air cylinder (89) is fixedly connected with an ironing block (810), and the air inlet on the ironing block (810) is connected with an interface on an ironing machine through a hose.

5. A take-up mechanism for fire resistant fabric as claimed in claim 1 wherein: The drying assembly includes two second mounting blocks (813) mounted on the support rod (811), one of which is provided with a third servo motor (814), the output end of the third servo motor (814) is connected with one end of a third lead screw (818), the other end of the third lead screw (818) is mounted on a bearing seat on the other second mounting block (813) through a bearing, and the third lead screw (818) is also mounted in a third lead screw sleeve block (815) in a matching mode, the top of the third lead screw sleeve block (815) is provided with a protruding block, a guide rod is arranged in the through hole of the protruding block, and the two ends of the guide rod are connected to corresponding positioning blocks, and the sidewall of the third lead screw sleeve block (815) is provided with an eighth cylinder (817), and the output end of the eighth cylinder (817) is fixedly connected with an air outlet plate (816).

6. A take-up mechanism for a flame resistant fabric according to claim 5, wherein: The support rod (811) is provided with a seventh cylinder (812), and the output end of the seventh cylinder (812) is fixedly connected with a pressing strip (819).

7. A take-up mechanism for flame resistant fabric according to claim 1, wherein: The driving structure includes a driving motor (12) mounted on a support seat, the output end of the driving motor (12) is fixedly connected with a driving gear (13), one end of the driving gear (13) is connected with a first transmission roller (14), the driving gear (13) is meshed with a driven gear (15), the driven gear (15) is connected with a second transmission roller (16), one end of the support seat is provided with a U-shaped frame (11), the top of the U-shaped frame (11) is provided with a first fixed block (6), the first fixed block (6) is provided with a first cylinder (7), the output end of the first cylinder (7) is fixedly connected with a pushing plate (9), the support seat is fixedly provided with a positioning rod (21), the positioning rod (21) is provided with a moving block (22), the top of the moving block (22) is provided with a limiting strip (23), and the moving block (22) is provided with a rotating bolt for rotation and fixation.

8. A take-up mechanism for flame resistant fabric according to claim 1, wherein: The pressing structure includes a second fixed block (24) fixedly mounted on the top of the guide plate, one end of the second fixed block (24) is fixedly provided with a third cylinder (25), the output end of the third cylinder (25) is fixedly connected with an L-shaped block (26), the top of the L-shaped block (26) is fixedly provided with a fourth cylinder (27), the output end of the fourth cylinder (27) is fixedly connected with a U-shaped block (28), and the bottom of the U-shaped block (28) is provided with a guide groove (30).

9. A take-up mechanism for fire resistant fabric as claimed in claim 1 wherein: The cutting structure includes a third fixed block (32) fixedly installed at the bottom of the material guide plate, one end of the third fixed block (32) is fixedly provided with a first servo motor (33), the output end of the first servo motor (33) is connected with one end of a first lead screw (34), the other end of the first lead screw (34) is installed through a bearing and a bearing seat on another third fixed block (32), the first lead screw (34) is adaptively installed with a first lead screw sleeve block (35), and the top of the first lead screw sleeve block (35) is provided with a cutting knife (31).