A membrane incision knife device
The automated cutting mechanism of the film cutting device uses cylinders and motors to drive the blade to move and adjust its position, which solves the accuracy and efficiency problems caused by worker fatigue and achieves efficient and convenient plastic film cutting.
Patent Information
- Application Number
- CN202522605585.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-08
AI Technical Summary
In existing technologies, workers are prone to fatigue during prolonged operation of cutting and slitting plastic films, leading to a decrease in accuracy and efficiency.
The device employs a slitting blade, which uses a cylinder to drive the blade to move within a sleeve, controlling the feed rate. It also combines a motor-driven lead screw to adjust the blade position, achieving automated slitting and reducing manual operation.
It improves the accuracy and efficiency of plastic film cutting, reduces manual labor intensity, and enhances the convenience and flexibility of operation.
Smart Images

Figure CN224928042U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of plastic film processing technology, and in particular to a film cutting knife device. Background Technology
[0002] Plastic films have basic functions such as waterproofing, moisture-proofing, dustproofing, corrosion prevention, and protection, and are widely used in agriculture, food, medical, construction, and industrial fields.
[0003] After production, existing plastic films often need to be cut and divided according to requirements. The traditional method is to cut and divide the plastic film manually. However, workers may experience fatigue after long hours of operation, which will affect the accuracy of cutting and dividing the plastic film and the processing efficiency. Utility Model Content
[0004] The purpose of this invention is to solve or at least alleviate the problem in the prior art where workers experience fatigue during long-term operation, which affects the accuracy of cutting and segmenting plastic films and processing efficiency.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a film-splitting knife device, comprising a first workbench and a second workbench, wherein a storage box for storing plastic film is fixedly installed in the first workbench, and a splitting mechanism for splitting and separating plastic film is provided on the second workbench. The slitting mechanism includes two symmetrically fixed plates, each with a corresponding second U-shaped plate. A slitting roller is rotatably mounted on one side of the two second U-shaped plates that are close to each other. A housing is fixedly mounted on the second worktable, and a lead screw is rotatably mounted inside the housing. A threaded plate is screwed onto the lead screw, and a connecting frame is fixedly mounted at the bottom of the threaded plate. An L-shaped frame is fixedly mounted on the connecting frame, and a second cylinder is fixedly mounted on the L-shaped frame. A mounting box is fixedly mounted at the output end of the second cylinder. A sleeve is fixedly mounted on one side of the L-shaped frame by external bolts, and the mounting box is located inside the sleeve. A blade for slitting the plastic film is provided inside the sleeve.
[0006] By adopting the above technical solution, the output end of the second cylinder is controlled to push the mounting box and the blade to move inside the sleeve, and the blade moves to the outside of the sleeve. The feed rate of the blade can be controlled according to the set requirements. When the blade is not in use, it is retracted inside the sleeve. This allows the multi-layer co-extruded plastic film to be cut into predetermined sizes and shapes to meet different production needs, without the need for manual operation. Therefore, it can improve work efficiency and reduce the labor intensity of manual labor.
[0007] Optionally, a support frame is fixedly installed on one side of the housing, a motor is fixedly installed on the support frame, the output end of the motor is fixedly connected to one end of the lead screw, and multiple support feet are fixedly installed at the bottom of the first workbench.
[0008] By adopting the above technical solution, the output end of the motor will drive the lead screw to rotate, and the rotation of the lead screw will drive the threaded block and the connecting frame to move. The movement of the connecting frame will drive the sleeve and the blade to move as well. Thus, the position of the blade can be adjusted according to the needs, thereby improving the convenience and flexibility of the film cutting process.
[0009] Optionally, the sleeve is located above one side of the cutting roller, and the width of the cavity inside the sleeve is greater than the width of the blade.
[0010] By adopting the above technical solution, the width of the cavity inside the sleeve must be greater than the width of the blade, thereby facilitating the movement of the blade.
[0011] Optionally, connecting blocks are fixedly installed on both sides of the first and second workbenches, and corresponding connecting columns are fixedly installed on the side of the two connecting blocks that are close to each other.
[0012] By adopting the above technical solution, the connection block can be set up to assist in the installation.
[0013] Optionally, two upright plates are symmetrically fixedly installed on the first worktable. A first U-shaped plate is fixedly installed on the side of the two upright plates that are close to each other. The same first guide roller is rotatably installed on the side of the two first U-shaped plates that are close to each other.
[0014] By adopting the above technical solution, the plastic film can be guided by setting a first guide roller.
[0015] Optionally, a support plate is fixedly installed on one side of the storage box, and two first cylinders are symmetrically fixedly installed on the top of the support plate. The output ends of the two first cylinders are fixedly installed on the same lifting frame, and a second guide roller is rotatably installed inside the lifting frame.
[0016] By adopting the above technical solution, the output end of the first cylinder is controlled to drive the lifting frame and the second guide roller to move. The position of the second guide roller can be adjusted according to the stretching progress of the plastic film, thus improving the convenience and flexibility of use.
[0017] Optionally, two clamping plates are symmetrically slidably installed inside the mounting box, and two sliding grooves are symmetrically opened on the mounting box. Sliding blocks are fixedly installed on both clamping plates, and the two sliding blocks are slidably installed in the corresponding sliding grooves.
[0018] By adopting the above technical solution, the installation can be assisted by setting a sliding groove.
[0019] Optionally, the same connecting bolt is screwed onto both sliding blocks, both clamping plates are in contact with the blade, and the bottom of the mounting box is open.
[0020] By adopting the above technical solution, the positioning and installation of the two sliding blocks and two clamping plates can be released by rotating the connecting bolts, thereby enabling the disassembly, replacement or maintenance of the blade, thus improving the convenience and flexibility of use.
[0021] In summary, the beneficial effects of this application are as follows: 1. In this invention, a blade and the like are used in conjunction with a second cylinder. The output of the second cylinder pushes the mounting box and the blade to move within the sleeve, causing the blade to move to the outside of the sleeve. The feed rate of the blade can be controlled according to set requirements. When not in use, the blade is retracted inside the sleeve. This allows the multi-layer co-extruded plastic film to be cut into predetermined sizes and shapes to meet different production needs, eliminating the need for manual operation. Therefore, it can improve work efficiency and reduce the labor intensity of manual labor.
[0022] 2. In this application, the new invention employs a connecting frame and the like. By controlling the start motor, the output end of the motor drives the lead screw to rotate. The rotation of the lead screw drives the threaded block and the connecting frame to move. The movement of the connecting frame drives the sleeve and the blade to move as well. Thus, the position of the blade can be adjusted according to the needs, thereby improving the convenience and flexibility of the cutting process. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the guiding structure of this application; Figure 3 This is a schematic diagram of the membrane structure of this application; Figure 4 This is a schematic diagram of the membrane structure of this application; Figure 5 This is a partial unfolded schematic diagram of the installation structure of this application.
[0024] Explanation of reference numerals in the attached drawings: 1. First workbench; 2. Support leg; 3. Second workbench; 4. Connecting block; 5. Connecting column; 6. Storage box; 7. Vertical plate; 8. First U-shaped plate; 9. First guide roller; 10. Lifting frame; 11. Second guide roller; 12. First cylinder; 13. Support plate; 14. Box body; 15. Fixing plate; 16. Second U-shaped plate; 17. Cutting roller; 18. Lead screw; 19. Sliding block; 20. Threaded plate; 21. Connecting frame; 22. Support frame; 23. Motor; 24. L-shaped frame; 25. Sleeve; 26. Sliding groove; 27. Second cylinder; 28. Mounting box; 29. Blade; 30. Clamping plate; 31. Connecting bolt. Detailed Implementation
[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0026] Please see Figure 1-3 A film-cutting knife device includes a first workbench 1 and a second workbench 3, a storage box 6 fixedly installed in the first workbench 1 for storing plastic film, a cutting mechanism set on the second workbench 3 for cutting and separating the plastic film, the cutting mechanism being able to cut multi-layer co-extruded plastic film according to predetermined size and shape to meet different production needs, thereby eliminating the need for manual operation, thus improving work efficiency and reducing manual labor intensity, an installation mechanism set on the cutting mechanism, and a guide mechanism set on the first workbench 1, the guide mechanism being able to adjust the position according to the stretching progress of the plastic film, thus improving the convenience and flexibility of use; The slitting mechanism includes two fixed plates 15 symmetrically fixedly installed, each fixedly installed with a corresponding second U-shaped plate 16, a slitting roller 17 rotatably installed on one side of the two second U-shaped plates 16 that are close to each other, the slitting roller 17 being driven by an external device and being existing technology in the field, so the specific usage is not described in detail, a box 14 fixedly installed on the second workbench 3, a lead screw 18 rotatably installed in the box 14, a threaded plate 20 screwed onto the lead screw 18, a connecting frame 21 fixedly installed at the bottom of the threaded plate 20, and an L-shaped frame 24 fixedly installed on the connecting frame 21; The slitting mechanism also includes a second cylinder 27 fixedly mounted on an L-shaped frame 24, a mounting box 28 fixedly mounted to the output end of the second cylinder 27, and a sleeve 25 fixedly mounted on one side of the L-shaped frame 24 by external bolts. The mounting box 28 is located inside the sleeve 25, and the sleeve 25 is provided with a blade 29 for slitting the plastic film. A support frame 22 is fixedly mounted on one side of the housing 14, and a motor 23 is fixedly mounted on the support frame 22. The output end of the motor 23 is fixedly connected to one end of the lead screw 18. Multiple support feet 2 are fixedly mounted on the bottom of the first worktable 1. The sleeve 25 is located above one side of the slitting roller 17, and the width of the cavity inside the sleeve 25 is greater than the width of the blade 29.
[0027] In use, by controlling the start of the second cylinder 27, the output end of the second cylinder 27 will push the mounting box 28 and the blade 29 to move inside the sleeve 25, and move the blade 29 to the outside of the sleeve 25. The feed rate of the blade 29 can be controlled according to the set requirements. When not in use, the blade 29 is retracted inside the sleeve 25, so that the multi-layer co-extruded plastic film can be cut according to the predetermined size and shape to meet different production needs, without the need for manual operation. Therefore, it can improve work efficiency and reduce the labor intensity of manual labor. By controlling the start motor 23, the output end of the motor 23 will drive the lead screw 18 to rotate. The rotation of the lead screw 18 will drive the threaded block 20 and the connecting frame 21 to move. The movement of the connecting frame 21 will drive the sleeve 25 and the blade 29 to move as well. Thus, the position of the blade 29 can be adjusted according to the needs, thereby improving the convenience and flexibility of the film cutting process.
[0028] Reference Figure 2-4 The guiding mechanism includes two connecting blocks 4 fixedly installed on both sides of the first workbench 1 and the second workbench 3, and corresponding connecting columns 5 fixedly installed on the side of the two connecting blocks 4 that are close to each other; two upright plates 7 symmetrically fixedly installed on the first workbench 1, and a first U-shaped plate 8 fixedly installed on the side of the two upright plates 7 that are close to each other; the same first guide roller 9 rotatably installed on the side of the two first U-shaped plates 8 that are close to each other; a support plate 13 fixedly installed on one side of the storage box 6; two first cylinders 12 symmetrically fixedly installed on the top of the support plate 13, and the same lifting frame 10 fixedly installed at the output end of the two first cylinders 12; and a second guide roller 11 rotatably installed inside the lifting frame 10.
[0029] In use, by controlling the start of the first cylinder 12, the output end of the first cylinder 12 will drive the lifting frame 10 and the second guide roller 11 to move. The position of the second guide roller 11 can be adjusted according to the stretching progress of the plastic film, thus improving the convenience and flexibility of use.
[0030] Reference Figure 4-5 The installation mechanism includes two clamping plates 30 symmetrically slidably installed in the installation box 28, two sliding grooves 26 opened on the installation box 28, and sliding blocks 19 fixedly installed on both clamping plates 30. The two sliding blocks 19 are slidably installed in the corresponding sliding grooves 26 and the same connecting bolt 31 is screwed onto the two sliding blocks 19. Both clamping plates 30 are in contact with the blade 29. The bottom of the installation box 28 is open.
[0031] In use, the sleeve 25 can be disassembled by rotating the external bolts. Then, the connecting bolts 31 can be rotated to release the positioning and installation of the two sliding blocks 19 and the two clamping plates 30, thereby completing the disassembly, replacement or maintenance of the blade 29. This improves the convenience and flexibility of use.
[0032] The implementation principle of this application is as follows: During use, the plastic film in the storage box 6 passes sequentially through the first guide roller 9, the second guide roller 11, and the cutting roller 17. At this time, the cutting roller 17 is rotated by external equipment, and the second cylinder 27 is activated by control. The output end of the second cylinder 27 pushes the mounting box 28 and the blade 29 to move inside the sleeve 25, so that the blade 29 moves to the outside of the sleeve 25. The feed rate of the blade 29 can be controlled according to the set requirements. When not in use, the blade 29 is retracted inside the sleeve 25, so that the multi-layer co-extruded plastic film can be cut according to the predetermined size and shape to meet different production needs, thereby eliminating the need for manual operation, thus improving work efficiency and reducing the labor intensity of manual labor. By controlling the start motor 23, the output end of the motor 23 will drive the lead screw 18 to rotate. The rotation of the lead screw 18 will drive the threaded block 20 and the connecting frame 21 to move. The movement of the connecting frame 21 will drive the sleeve 25 and the blade 29 to move as well. Thus, the position of the blade 29 can be adjusted according to the needs, thereby improving the convenience and flexibility of the cutting process. By controlling the start of the first cylinder 12, the output end of the first cylinder 12 will drive the lifting frame 10 and the second guide roller 11 to move. The position of the second guide roller 11 can be adjusted according to the stretching progress of the plastic film, thus improving the convenience and flexibility of use. By rotating the external bolt, the sleeve 25 can be disassembled. At this time, the connecting bolt 31 can be rotated to release the positioning installation of the two sliding blocks 19 and the two clamping plates 30, thus completing the disassembly, replacement or maintenance of the blade 29, thus improving the convenience and flexibility of use.
[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A membrane cutting device, comprising a first worktable (1) and a second worktable (3), characterized in that: The first workbench (1) is fixedly installed with a storage box (6) for storing plastic film, and the second workbench (3) is provided with a cutting mechanism for cutting and separating plastic film. The cutting mechanism includes two fixed plates (15) symmetrically fixedly installed. Each of the two fixed plates (15) is fixedly installed with a corresponding second U-shaped plate (16). The same cutting roller (17) is rotatably installed on the side of the two second U-shaped plates (16) that are close to each other. A box (14) is fixedly installed on the second worktable (3). A lead screw (18) is rotatably installed inside the box (14). A threaded plate (20) is screwed onto the lead screw (18). A connecting frame (21) is fixedly installed at the bottom of the threaded plate (20). An L-shaped frame (24) is fixedly installed on the connecting frame (21). A second cylinder (27) is fixedly installed on the L-shaped frame (24). An installation box (28) is fixedly installed at the output end of the second cylinder (27). A sleeve (25) is fixedly installed on one side of the L-shaped frame (24) by external bolts. The installation box (28) is located inside the sleeve (25). A blade (29) for cutting plastic film is provided inside the sleeve (25).
2. The membrane cutting device according to claim 1, characterized in that: A support frame (22) is fixedly installed on one side of the box (14), and a motor (23) is fixedly installed on the support frame (22). The output end of the motor (23) is fixedly connected to one end of the lead screw (18), and multiple support feet (2) are fixedly installed at the bottom of the first workbench (1).
3. The membrane cutting device according to claim 1, characterized in that: The sleeve (25) is located above one side of the cutting roller (17), and the width of the cavity inside the sleeve (25) is greater than the width of the blade (29).
4. The membrane cutting device according to claim 1, characterized in that: Connecting blocks (4) are fixedly installed on both sides of the first workbench (1) and the second workbench (3), and corresponding connecting columns (5) are fixedly installed on the side of the two connecting blocks (4) that are close to each other.
5. The membrane cutting device according to claim 1, characterized in that: Two upright plates (7) are symmetrically fixedly installed on the first workbench (1). A first U-shaped plate (8) is fixedly installed on the side of the two upright plates (7) that are close to each other. The same first guide roller (9) is rotatably installed on the side of the two first U-shaped plates (8) that are close to each other.
6. The membrane cutting device according to claim 1, characterized in that: A support plate (13) is fixedly installed on one side of the storage box (6). Two first cylinders (12) are symmetrically fixedly installed on the top of the support plate (13). The output ends of the two first cylinders (12) are fixedly installed on the same lifting frame (10). A second guide roller (11) is rotatably installed inside the lifting frame (10).
7. The membrane cutting device according to claim 1, characterized in that: Two clamping plates (30) are symmetrically slidably installed inside the mounting box (28). Two sliding grooves (26) are symmetrically opened on the mounting box (28). Sliding blocks (19) are fixedly installed on both clamping plates (30). The two sliding blocks (19) are slidably installed in the corresponding sliding grooves (26).
8. A membrane cutting device according to claim 7, characterized in that: The two sliding blocks (19) are screwed with the same connecting bolt (31), the two clamping plates (30) are in contact with the blade (29), and the bottom of the mounting box (28) is open.
