Slitting machine

Abstract

The utility model provides a slitting machine, and relates to the technical field of slitting machines, the slitting machine comprises a support, the left side and the right side of the top of the support are detachably and movably connected with a discharging roller and a winding roller respectively, a limiting roller is arranged between the discharging roller and the winding roller, and the surface of the limiting roller is movably connected with the top of the support through a bearing; and an adjusting roller is arranged between the two limiting rollers and can be adjusted up and down in the support, a slitting structure is arranged at the top of the adjusting roller, the rear side of the slitting structure penetrates to the rear side of the support, and a linkage structure is fixedly connected to the front side of the slitting structure. According to the slitting machine, the support, the discharging roller, the winding roller, the limiting roller, the adjusting roller, the slitting structure, the linkage structure and the adjusting and polishing structure are arranged, so that the problems that in the using process of an existing slitting machine, a cutter becomes blunt after long-term use, the cutting quality is affected, and the edge of a material is possibly irregular or the size is inaccurate are solved.

Description

Technical Field

[0001] This utility model relates to the field of slitting machine technology, and more particularly to slitting machines. Background Technology

[0002] A slitting machine, also known as a strip cutting machine, is an important piece of industrial equipment. It is used to longitudinally cut strips of material into strips of desired specifications. It is widely used in various industries such as garment manufacturing, textile processing, furniture manufacturing, and automotive interiors for automatically cutting fabrics and slitting them into strips.

[0003] In existing technologies, printing raw materials are too large and need to be slit. Slitting requires the use of a slitting machine. However, with prolonged use, the blades of existing slitting machines become dull, affecting the cutting quality and potentially causing uneven material edges or inaccurate dimensions, thus reducing the efficiency of the slitting machine. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a slitting machine that facilitates the sharpening of slitting blades and allows for blade position adjustment. This solves the problem that long-term use of existing slitting machines can lead to dull blades, affecting cutting quality and potentially resulting in uneven material edges or inaccurate dimensions.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a slitting machine, including a support, with a feeding roller and a winding roller detachably and movably connected to the left and right sides of the top of the support, respectively, and a limiting roller is provided between the feeding roller and the winding roller, the surface of the limiting roller being movably connected to the top of the support through a bearing;

[0006] An adjusting roller is provided between the two limiting rollers. The adjusting roller can be adjusted up and down within the support. A slitting structure is provided at the top of the adjusting roller. The rear side of the slitting structure extends to the rear side of the support. A linkage structure is fixedly connected to the front side of the slitting structure. The linkage structure is used for the transmission connection of the winding roller, the unwinding roller and the limiting roller.

[0007] The top of the slitting structure is provided with an adjustable grinding structure, and the bottom of the adjustable grinding structure is fixedly connected to the top of the support.

[0008] Furthermore, the slitting structure includes a servo motor, the front side of which is fixedly connected to the rear side of the support. The output end of the servo motor passes through the support and is fixedly connected to a drive shaft. A slitting blade is sleeved on the surface of the drive shaft. A limit ring is fixedly connected to one side of the slitting blade. A limit block is provided inside the limit ring. A screw is movably connected to the top of the limit block. The top of the screw passes through the limit ring and extends to the top of the limit ring. The surface of the screw is threadedly connected to the inside of the limit ring. A sliding groove for sliding the limit block is formed on the surface of the drive shaft.

[0009] Furthermore, the linkage structure includes two first gears. The front side of the drive shaft passes through the support and extends to the front side of the support. The interior of both first gears is fixedly connected to the front side of the drive shaft surface. A chain meshes with the surface of the first gear. A second gear meshes with the other side of the inner ring of the chain. A first transmission gear is fixedly connected to one side of the second gear. The rear side of the first transmission gear is movably connected to the front side of the support. A second transmission gear meshes with the bottom of the first transmission gear. The rear sides of the two second transmission gears are fixedly connected to the front sides of the feeding roller and the winding roller, respectively. A third gear meshes with the interior of the chain. The rear side of the third gear is fixedly connected to the front side of the limiting roller.

[0010] Furthermore, the adjusting grinding structure includes a crossbar, the bottom of which is fixedly connected to the top of the support. A grinding plate is fitted to the top of the surface of the slitting blade. A moving block is movably connected to the top of the grinding plate via a rotating shaft. One side of the moving block is located inside the crossbar and is movably connected to the interior of the crossbar. A guide rod is movably connected to the interior of the moving block. The front and rear sides of the guide rod are fixedly connected to the inner wall of the crossbar. A limit structure is provided on the top of the moving block.

[0011] Furthermore, a connecting plate is fixedly connected to the left side of the movable block, and a first return spring is fixedly connected to the bottom of the connecting plate. The bottom of the first return spring is fixedly connected to the top of the grinding plate.

[0012] Furthermore, the limiting structure includes a limiting post, the bottom of which is fixedly connected to the top of the moving block, the top of which extends through to the top of the crossbar, a collar sleeved on the surface of the limiting post, a locking block fixedly connected to the bottom of the collar, the bottom of the locking block engaging with the top of the crossbar, a top plate fixedly connected to the top of the limiting post, and a second return spring sleeved on the surface of the limiting post, the second return spring being located between the collar and the top plate.

[0013] Furthermore, the top of the crossbar is provided with a moving groove for the movement of the limiting post, and the top of the crossbar is provided with a locking groove for the locking block. The number of locking grooves is several and they are evenly distributed.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model, through the setting of a support, feeding roller, take-up roller, limiting roller, adjusting roller, slitting structure, linkage structure, and adjusting and grinding structure, and the detachable and movable connection design of the feeding roller and take-up roller, facilitates users to quickly change roll materials of different specifications or materials, improving the flexibility and applicability of the equipment. The setting of the limiting roller ensures the stability and accuracy of the roll material during the transmission process, avoiding problems such as roll material deviation or wrinkles. The up and down adjustment function of the adjusting roller allows users to flexibly adjust the slitting position according to the thickness of the roll material and processing requirements, further improving the processing accuracy and flexibility of the equipment. The setting of the slitting structure realizes the precise slitting of the roll material, meeting the needs of different users for roll material width. The design of the linkage structure realizes the transmission connection between the feeding roller, take-up roller, limiting roller, and adjusting roller, ensuring the coordinated work between the components and improving the overall operating efficiency and stability of the equipment. The setting of the adjusting and grinding structure can grind the surface of the slitting blade to prevent the blade from becoming dull.

[0016] 2. This utility model, through the setting of a slitting structure, can achieve precise adjustment and stable fixation of the slitting blade position. The precise control of the servo motor enables the transmission shaft and slitting blade to rotate stably, improving slitting accuracy. The combined use of the limit ring, limit block and screw not only facilitates the adjustment of the slitting blade position on the transmission shaft, but also ensures the stability of the slitting blade during operation through the threaded connection, preventing it from shifting or loosening, thereby improving slitting efficiency and product quality. The design of the sliding groove provides guidance for the sliding of the limit block, further enhancing the stability and reliability of the structure.

[0017] 3. This utility model, through the setting of a linkage structure, can realize the synchronous transmission of the unloading roller, the take-up roller, and the limiting roller. The transmission shaft drives two first gears to rotate, and transmits power to the second gear through the chain, which in turn drives the first transmission gear to rotate. The meshing of the first transmission gear and the second transmission gear enables the unloading roller and the take-up roller to work synchronously and in coordination, realizing the stable unloading and take-up of the material. The chain also has a third gear meshing inside. The rotation of the third gear drives the operation of the limiting roller, ensuring the stability and accuracy of the material during the transmission process.

[0018] 4. This utility model, through the setting of an adjustable grinding structure, provides a stable support foundation for the grinding plate by setting a crossbar and a fixed connection between the crossbar and the support. The grinding plate makes contact with the top of the slitting blade surface. The position of the grinding plate can be flexibly adjusted by a movable block connected by a rotating shaft, ensuring uniform and effective grinding of the slitting blade. The movable block is movably connected inside the crossbar, and combined with the fixed guiding effect of the guide rod, the movement of the movable block is more stable and reliable. The limiting structure at the top of the movable block can limit and fix the movable block, enabling efficient and precise grinding of the slitting blade, improving grinding efficiency and quality, while ensuring operational stability and safety.

[0019] 5. By setting a connecting plate and a first return spring, this utility model enables the grinding plate to have a certain degree of self-adaptability and stability during the grinding process. When the grinding plate is subjected to external force, the first return spring can exert its elastic effect to buffer and adjust the grinding plate, thereby maintaining uniform contact between the grinding plate and the surface to be ground, and improving the grinding effect and efficiency.

[0020] 6. This utility model, by setting a limiting structure, can limit and guide the moving block through the limiting post. At the same time, by moving the collar upward, the collar squeezes the second return spring, and the collar drives the locking block to disengage from the inside of the locking groove, thereby realizing the movement of the moving block. When the moving block drives the grinding plate to the appropriate position, the second return spring rebounds the collar and the locking block, so that the locking block is locked into the crossbar, thereby limiting and fixing the moving block.

[0021] 7. This utility model, by setting a moving groove and a locking groove, allows the limiting column to move smoothly within the moving groove, realizing the flexibility and adjustability of the structure and meeting the needs of different usage scenarios. The even distribution of the locking groove provides multiple limiting points for the locking block, enhancing the stability and reliability of the structure, effectively preventing the components from loosening or falling off, and improving the overall safety performance. Attached Figure Description

[0022] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the linkage mechanism;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the slicing structure;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the slitting blade;

[0027] Figure 5 This is a sectional perspective view of the crossbar.

[0028] In the diagram: 1. Support; 2. Feeding roller; 3. Rewinding roller; 4. Limiting roller; 5. Adjusting roller; 6. Servo motor; 7. Drive shaft; 8. Sliding blade; 9. Limiting ring; 10. Limiting block; 11. Screw; 12. Sliding groove; 13. First gear; 14. Chain; 15. Second gear; 16. First transmission gear; 17. Second transmission gear; 18. Third gear; 19. Crossbar; 20. Grinding plate; 21. Moving block; 22. Guide rod; 23. Connecting plate; 24. First return spring; 25. Limiting post; 26. Collar; 27. Locking block; 28. Top plate; 29. ​​Second return spring; 30. Moving groove; 31. Locking slot. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0030] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of this utility model.

[0031] The slitting machine includes a support 1. A feeding roller 2 and a winding roller 3 are detachably and movably connected to the left and right sides of the top of the support 1, respectively. A limit roller 4 is provided between the feeding roller 2 and the winding roller 3. The surface of the limit roller 4 is movably connected to the top of the support 1 through a bearing.

[0032] An adjusting roller 5 is provided between the two limiting rollers 4. The adjusting roller 5 can be adjusted up and down within the support 1. A slitting structure is provided at the top of the adjusting roller 5. The rear side of the slitting structure extends through to the rear side of the support 1. A linkage structure is fixedly connected to the front side of the slitting structure. The linkage structure is used for the transmission connection of the winding roller 3, the unloading roller 2 and the limiting roller 4.

[0033] The top of the slitting structure is equipped with an adjustable grinding structure, and the bottom of the adjustable grinding structure is fixedly connected to the top of the support 1.

[0034] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 2 This is a schematic diagram of the three-dimensional structure of the linkage mechanism; Figure 3 This is a schematic diagram of the three-dimensional structure of the slicing structure; Figure 4 This is a schematic diagram of the three-dimensional structure of the slitting blade; Figure 5 This is a sectional perspective view of the crossbar.

[0035] The slitting structure includes a servo motor 6, the front of which is fixedly connected to the rear of the support 1. The output end of the servo motor 6 passes through the support 1 and is fixedly connected to a drive shaft 7. A slitting blade 8 is fitted onto the surface of the drive shaft 7. A limit ring 9 is fixedly connected to one side of the slitting blade 8. A limit block 10 is provided inside the limit ring 9. A screw 11 is movably connected to the top of the limit block 10. The top of the screw 11 passes through the limit ring 9 and extends to the top of the limit ring 9. The surface of the screw 11 is threadedly connected to the inside of the limit ring 9. A sliding groove for sliding the limit block 10 is formed on the surface of the drive shaft 7. The servo motor 6 enables precise adjustment and stable fixation of the slitting blade 8. The precise control of the servo motor 6 allows the drive shaft 7 and the slitting blade 8 to rotate stably, improving slitting accuracy. The combined use of the limit ring 9, the limit block 10, and the screw 11 not only facilitates the adjustment of the position of the slitting blade 8 on the drive shaft 7, but also ensures the stability of the slitting blade 8 during operation through the threaded connection, preventing it from shifting or loosening, thereby improving slitting efficiency and product quality. The design of the sliding groove 12 provides guidance for the sliding of the limit block 10, further enhancing the stability and reliability of the structure.

[0036] The linkage structure includes two first gears 13. The front side of the drive shaft 7 passes through the support 1 and extends to the front side of the support 1. The interiors of both first gears 13 are fixedly connected to the front side of the surface of the drive shaft 7. A chain 14 meshes with the surface of the first gear 13. A second gear 15 meshes with the other side of the inner ring of the chain 14. A first transmission gear 16 is fixedly connected to one side of the second gear 15. The rear side of the first transmission gear 16 is movably connected to the front side of the support 1. A second transmission gear 17 meshes with the bottom of the first transmission gear 16. The rear sides of the two second transmission gears 17 are fixedly connected to the front sides of the feeding roller 2 and the winding roller 3, respectively. A third transmission gear 17 meshes with the interior of the chain 14. Gear 18, the rear side of the third gear 18 is fixedly connected to the front side of the limiting roller 4, which can realize the synchronous transmission of the unloading roller 2, the winding roller 3 and the limiting roller 4. The transmission shaft 7 drives the two first gears 13 to rotate, and transmits the power to the second gear 15 through the chain 14, which in turn drives the first transmission gear 16 to rotate. The meshing of the first transmission gear 16 and the second transmission gear 17 enables the unloading roller 2 and the winding roller 3 to work synchronously and in coordination, realizing the stable unloading and winding of the material. The chain 14 also has a third gear 18 meshing inside. The rotation of the third gear 18 drives the operation of the limiting roller 4, ensuring the stability and accuracy of the material during the transmission process.

[0037] The adjustable grinding structure includes a crossbar 19, the bottom of which is fixedly connected to the top of the support 1. A grinding plate 20 is fitted onto the top of the surface of the slitting blade 8. A movable block 21 is movably connected to the top of the grinding plate 20 via a pivot. One side of the movable block 21 is located inside the crossbar 19 and is movably connected to its interior. A guide rod 22 is movably connected inside the movable block 21. The front and rear sides of the guide rod 22 are fixedly connected to the inner wall of the crossbar 19. A limit structure is provided on the top of the movable block 21. The fixed connection between the crossbar 19 and the support 1 provides a limit for the grinding plate 20. A stable supporting base is provided. The grinding plate 20 contacts the top of the slitting blade 8. The moving block 21, which is movably connected by a pivot, allows for flexible adjustment of the position of the grinding plate 20, ensuring uniform and effective grinding of the slitting blade 8. The moving block 21 is movably connected inside the crossbar 19. Combined with the fixed guiding effect of the guide rod 22, the movement of the moving block 21 is more stable and reliable. The limiting structure at the top of the moving block 21 can limit and fix the moving block 21, enabling efficient and precise grinding of the slitting blade 8, improving grinding efficiency and quality, while ensuring operational stability and safety.

[0038] A connecting plate 23 is fixedly connected to the left side of the movable block 21. A first return spring 24 is fixedly connected to the bottom of the connecting plate 23. The bottom of the first return spring 24 is fixedly connected to the top of the grinding plate 20, which enables the grinding plate 20 to have a certain degree of self-adaptability and stability during the grinding process. When the grinding plate 20 is subjected to external force, the first return spring 24 can exert its elastic effect to buffer and adjust the grinding plate 20, thereby maintaining uniform contact between the grinding plate 20 and the surface to be ground, and improving the grinding effect and efficiency.

[0039] The limiting structure includes a limiting post 25, the bottom of which is fixedly connected to the top of the moving block 21. The top of the limiting post 25 extends through to the top of the crossbar 19. A collar 26 is fitted onto the surface of the limiting post 25. A locking block 27 is fixedly connected to the bottom of the collar 26, and the bottom of the locking block 27 engages with the top of the crossbar 19. A top plate 28 is fixedly connected to the top of the limiting post 25. A second return spring 29 is fitted onto the surface of the limiting post 25 and is located within the collar 26. Between the top plate 28 and the top plate 28, the moving block 21 can be limited and guided by the limiting post 25. At the same time, by moving the collar 26 upward, the collar 26 squeezes the second return spring 29. The collar 26 drives the locking block 27 to disengage from the inside of the locking groove 31, thereby realizing the movement of the moving block 21. When the moving block 21 moves the grinding plate 20 to the appropriate position, the second return spring 29 rebounds the collar 26 and the locking block 27, so that the locking block 27 is locked into the crossbar 19, thereby limiting and fixing the moving block 21.

[0040] The top of the crossbar 19 has a moving groove 30 for the movement of the limiting post 25, and the top of the crossbar 19 has a locking groove 31 for the locking block 27. There are several locking grooves 31, which are evenly distributed. The design of the moving groove 30 allows the limiting post 25 to move smoothly within it, realizing the flexibility and adjustability of the structure and meeting the needs of different usage scenarios. The even distribution of the locking grooves 31 provides multiple limiting points for the locking block 27, enhancing the stability and reliability of the structure, effectively preventing the components from loosening or falling off, and improving the overall safety performance.

[0041] Working principle: During operation, the material is first placed on the feeding roller 2, and the servo motor 6 is started. The output end of the servo motor 6 drives the transmission shaft 7 to rotate, and the slitting blade 8 sleeved on the surface of the transmission shaft 7 rotates accordingly to slit the material. By adjusting the position of the screw 11 within the limit ring 9, combined with the sliding of the limit block 10 within the sliding groove 12, the position of the slitting blade 8 can be precisely adjusted and securely fixed to ensure slitting accuracy. The transmission shaft 7 drives the two first gears 13 to rotate, and the power is transmitted to the second gear 15 through the chain 14, which in turn drives the first transmission gear 16 to rotate. The meshing with the second transmission gear 17 enables the unloading roller 2 and the winding roller 3 to work synchronously and in coordination, achieving stable unloading and winding of the material. The chain 14 also has a third gear 18 meshing inside. The rotation of the third gear 18 drives the operation of the limit roller 4, ensuring the stability and accuracy of the material during transmission. During the slitting process, the surface of the slitting blade 8 will gradually wear. At this time, the position of the grinding plate 20 can be adjusted to grind the slitting blade 8. The moving block 21 is movably connected inside the crossbar 19. Combined with the fixed guiding effect of the guide rod 22, the movement of the moving block 21 is more stable and reliable. The limiting structure at the top of the moving block 21 can limit and fix the moving block 21, ensuring that the top of the grinding plate 20 and the surface of the slitting blade 8 are in contact. When the grinding plate 20 is subjected to external force, the first return spring 24 can exert its elasticity to buffer and adjust the grinding plate 20, thereby maintaining uniform contact between the grinding plate 20 and the surface to be ground, improving the grinding effect and efficiency. By moving the collar 26 upward, the collar 26 squeezes the second return spring 29, and the collar 26 drives the locking block 27 to disengage from the inside of the slot 31, which can realize the movement of the moving block 21. When the moving block 21 moves the grinding plate 20 to the appropriate position, the second return spring 29 rebounds the collar 26 and the locking block 27, so that the locking block 27 is locked into the slot 31 in the crossbar 19, limiting and fixing the moving block 21, thereby realizing efficient and precise grinding of the slitting blade 8.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A slitting machine characterized by: Including support (1), the left side and the right side of the top of the support (1) are respectively detachably connected with the unwinding roller (2) and the winding roller (3), the unwinding roller (2) and the winding roller (3) are provided with the limiting roller (4) in the middle, the surface of the limiting roller (4) is movably connected with the top of the support (1) through the bearing; Two limiting rollers (4) are provided with the adjusting roller (5) in the middle, the adjusting roller (5) can be adjusted up and down in the support (1), the top of the adjusting roller (5) is provided with a slitting structure, the rear side of the slitting structure penetrates to the rear side of the support (1), the front side of the slitting structure is fixedly connected with a linkage structure, and the linkage structure is used for the transmission connection of the winding roller (3), the unwinding roller (2) and the limiting roller (4); The top of the slitting structure is provided with an adjusting polishing structure, and the bottom of the adjusting polishing structure is fixedly connected with the top of the support (1).

2. The slitter according to claim 1, characterized in that: The slitting structure comprises a servo motor (6), the front side of the servo motor (6) is fixedly connected with the rear side of the support (1), the output end of the servo motor (6) penetrates the support (1) and is fixedly connected with a transmission shaft (7), the surface of the transmission shaft (7) is sleeved with a slitting knife (8), one side of the slitting knife (8) is fixedly connected with a limiting ring (9), the inside of the limiting ring (9) is provided with a limiting block (10), the top of the limiting block (10) is movably connected with a screw rod (11), the top of the screw rod (11) penetrates the limiting ring (9) and extends to the top of the limiting ring (9), the surface of the screw rod (11) is screw connected with the inside of the limiting ring (9), and the surface of the transmission shaft (7) is provided with a sliding groove (12) for sliding of the limiting block (10).

3. The slitter according to claim 2, characterized in that: The linkage structure comprises two first gears (13), the front side of the transmission shaft (7) penetrates the support (1) and extends to the front side of the support (1), the inside of the two first gears (13) is fixedly connected with the front side of the surface of the transmission shaft (7), the surface of the first gear (13) is engaged with a chain (14), the other side of the inner ring of the chain (14) is engaged with a second gear (15), one side of the second gear (15) is fixedly connected with a first transmission gear (16), the rear side of the first transmission gear (16) is movably connected with the front side of the support (1), the bottom of the first transmission gear (16) is engaged with a second transmission gear (17), the rear sides of the two second transmission gears (17) are respectively fixedly connected with the front sides of the unwinding roller (2) and the winding roller (3), the inside of the chain (14) is engaged with a third gear (18), and the rear side of the third gear (18) is fixedly connected with the front side of the limiting roller (4).

4. The slitter according to claim 2, characterized in that: The adjusting and polishing structure comprises a crossbar (19), the bottom of the crossbar (19) is fixedly connected with the top of the support (1), the top of the surface of the slitting cutter (8) is in contact with a polishing plate (20), the top of the polishing plate (20) is movably connected with a moving block (21) through a rotating shaft, one side of the moving block (21) is located inside the crossbar (19) and movably connected with the crossbar (19), the inside of the moving block (21) is movably connected with a guide rod (22), the front side and the rear side of the guide rod (22) are fixedly connected with the inner wall of the crossbar (19), and the top of the moving block (21) is provided with a limiting structure.

5. The slitter according to claim 4, characterized in that: The left side of the moving block (21) is fixedly connected with a connecting plate (23), the bottom of the connecting plate (23) is fixedly connected with a first reset spring (24), and the bottom of the first reset spring (24) is fixedly connected with the top of the polishing plate (20).

6. The slitter according to claim 4, characterized in that: The limiting structure comprises a limiting column (25), the bottom of the limiting column (25) is fixedly connected with the top of the moving block (21), the top of the limiting column (25) penetrates to the top of the crossbar (19), the surface of the limiting column (25) is sleeved with a sleeve ring (26), the bottom of the sleeve ring (26) is fixedly connected with a clamping block (27), the bottom of the clamping block (27) is matched with the top of the crossbar (19), the top of the limiting column (25) is fixedly connected with a top plate (28), the surface of the limiting column (25) is sleeved with a second reset spring (29), and the second reset spring (29) is located between the sleeve ring (26) and the top plate (28).

7. The slitter according to claim 6, characterized in that: The top of the crossbar (19) is provided with a moving groove (30) for the movement of the limiting column (25), the top of the crossbar (19) is provided with a clamping groove (31) for limiting the clamping block (27), the number of the clamping groove (31) is several, and the clamping groove (31) is evenly distributed.

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