PET protective film slitting machine
By introducing a clamping plate and roller structure into the PET protective film slitting machine, combined with spring and pneumatic cylinder drive, automatic positioning and slitting of PET protective film are achieved, solving the position offset problem and improving slitting efficiency and automation.
Patent Information
- Application Number
- CN202423288251.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing PET protective film slitting machines lack a limiting mechanism, which may cause positional deviation during the pulling process, affecting slitting efficiency. Furthermore, the slitting process relies on manual operation, making it less practical.
A PET protective film slitting machine was designed, comprising a clamping plate and roller structure. Driven by springs and pneumatic cylinders, it achieves automatic positioning and slitting of PET protective film to avoid positional deviation. The slitting blades are driven by the pneumatic cylinders for automatic slitting.
It improves the efficiency and automation of PET protective film slitting, reduces positional offset, and enhances the practicality and automation level of slitting.
Smart Images

Figure CN223617790U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PET protective film technology, specifically a PET protective film slitting machine. Background Technology
[0002] PET protective film is a comprehensive packaging film with good transparency and gloss; it has good airtightness and aroma retention; moderate moisture resistance, with moisture permeability decreasing at low temperatures; and excellent mechanical properties, with the best toughness among all thermoplastics, and much higher tensile strength and impact resistance than ordinary films; it also has good stiffness and dimensional stability. Since protective film needs to be cut into strips before use, a PET protective film slitting machine is required.
[0003] When operators slit PET protective films, they often use corresponding PET protective film slitting machines. Although existing slitting machines can achieve the purpose of slitting, they lack a limiting mechanism for the protective film during actual use. This may cause positional deviation during the pulling process, thus affecting the slitting efficiency. In addition, slitting is mostly done manually, which reduces its practicality. Utility Model Content
[0004] The purpose of this utility model is to provide a PET protective film slitting machine to solve the problem mentioned in the background art. When operators slitting PET protective films, they often use corresponding PET protective film slitting machines. Although existing slitting machines can achieve the purpose of slitting, they lack a limiting mechanism for the protective film in actual use. This may cause positional deviation during the pulling process, thus affecting the slitting efficiency. Moreover, slitting is mostly done manually, which reduces its practicality.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a PET protective film slitting machine, comprising a base plate, vertical plates fixedly installed at both ends of the top of the base plate, a horizontal plate fixedly installed at the top of the vertical plates, round rods movably installed at both ends of the top of the horizontal plates, the bottom of the round rods penetrating the horizontal plates and extending to the bottom of the horizontal plates, a connecting plate fixedly installed at the bottom of the round rods, a spring fixedly installed between the connecting plate and the horizontal plate, the inner surface of the springs being movably connected to the outer surface of the round rods, clamping plates fixedly installed at both ends of the bottom of the connecting plate, and a roller rotatably installed between the clamping plates.
[0006] Preferably, a top plate is fixedly installed on the top of the round rod, a handle is hinged to the top of the top plate, a slot is provided on one side of the handle, a fixing frame is fixedly installed on the top of the horizontal plate, upright plates are fixedly installed at both ends of the top of the bottom plate, a carrying plate is fixedly installed on the top of the upright plate, and brackets are fixedly installed at the four corners of the bottom of the bottom plate.
[0007] Preferably, each of the upright plates has a vertical groove at one end, and a movable block is movably installed inside each vertical groove. A pressure plate is fixedly installed between the movable blocks, and a slitting blade is fixedly installed at the bottom of the pressure plate.
[0008] Preferably, guide rods are movably installed at both ends of the top of the carrying plate, and the bottom of the guide rods penetrates the carrying plate and is fixedly connected to the top of the pressure plate.
[0009] Preferably, a pneumatic cylinder is fixedly installed on the top of the carrying plate, and the output end of the pneumatic cylinder passes through the carrying plate and is fixedly connected to the top of the pressure plate.
[0010] Preferably, a fixing plate is fixedly installed on the top of the base plate, and a round shaft is rotatably installed on one end of the fixing plate.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] In daily use, this PET protective film slitting machine involves the operator placing the PET protective film between the top of the base plate and the vertical plate, then sliding the handle out from the outer surface of the fixed frame. The handle then causes the top plate to slide, compressing the spring. The top plate then causes the round rod to slide, which in turn causes the connecting plate to slide and the spring to rebound. Simultaneously, the connecting plate causes the clamping plate and roller to slide until the bottom of the clamping plate is placed on top of the base plate. The PET protective film then moves between the base plate and the roller to prevent positional displacement, thereby improving slitting efficiency.
[0013] This PET protective film slitting machine, during daily use, activates a pneumatic cylinder when the PET protective film is placed under the slitting blade. The operation of the pneumatic cylinder causes the pressure plate to slide, which in turn drives the guide rod to slide inside the carrier plate. At this time, the pressure plate also drives the moving block to slide inside the vertical groove. Simultaneously, the pressure plate drives the slitting blade to slide, thus automatically slitting the PET protective film, increasing its practicality. Attached Figure Description
[0014] Figure 1 This is the front view of the present invention;
[0015] Figure 2 This is a side sectional view of the present invention;
[0016] Figure 3 This is a front sectional view of the present invention;
[0017] Figure 4 This is a schematic diagram of the top structure of the base plate of this utility model;
[0018] Figure 5 This is a schematic diagram of the top structure of the horizontal plate of this utility model;
[0019] Figure 6 This is a schematic diagram of the top structure of the carrier plate of this utility model;
[0020] Figure 7 This is a schematic diagram of the bottom structure of the base plate of this utility model;
[0021] Figure 8 This is a bottom view of the present invention.
[0022] In the diagram: 1. Base plate; 2. Vertical plate; 3. Horizontal plate; 4. Round rod; 5. Connecting plate; 6. Spring; 7. Clamping plate; 8. Roller; 9. Top plate; 10. Handle; 11. Slot; 12. Fixing frame; 13. Vertical plate; 14. Loading plate; 15. Vertical groove; 16. Moving block; 17. Pressure plate; 18. Slitting blade; 19. Guide rod; 20. Pneumatic cylinder; 21. Fixing plate; 22. Round shaft; 23. Bracket. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-8This utility model provides a technical solution: a PET protective film slitting machine, including a base plate 1, vertical plates 2 fixedly installed at both ends of the top of the base plate 1, a horizontal plate 3 fixedly installed at the top of the vertical plates 2, and round rods 4 movably installed at both ends of the top of the horizontal plate 3. The bottom of the round rods 4 penetrates through the horizontal plate 3 and extends to the bottom of the horizontal plate 3. The outer surface of the round rods 4 and the inner surface of the horizontal plate 3 are both smooth, which allows the round rods 4 to slide more smoothly inside the horizontal plate 3 and reduces the occurrence of jamming. A connecting plate 5 is fixedly installed at the bottom of the round rods 4. When the round rods 4 slide, they will drive the connecting plate 5 to slide. A spring 6 is fixedly installed between the connecting plate 5 and the horizontal plate 3. The inner surface of the spring 6 is movably connected to the outer surface of the round rod 4. When the connecting plate 5 slides, the spring 6 will rebound. Clamping plates are fixedly installed at both ends of the bottom of the connecting plate 5. 7. A roller 8 is rotatably installed between the clamping plates 7. When the connecting plate 5 slides, it will cause the clamping plates 7 and the roller 8 to slide. A top plate 9 is fixedly installed on the top of the round rod 4. Due to the design of the top plate 9, the two round rods 4 can be connected. A handle 10 is hinged to the top of the top plate 9. The handle 10 can easily pull the top plate 9. A slot 11 is opened on one side of the handle 10. A fixing frame 12 is fixedly installed on the top of the horizontal plate 3. The slot 11 is adapted to the fixing frame 12. When the slot 11 is placed on the outer surface of the fixing frame 12, the spring 6 will be in a compressed state, and otherwise in a rebound state. A vertical plate 13 is fixedly installed on both ends of the top of the bottom plate 1. A carrying plate 14 is fixedly installed on the top of the vertical plate 13. A bracket 23 is fixedly installed at the four corners of the bottom of the bottom plate 1. Due to the design of the bracket 23, the machine can be more stable.
[0025] Each end of the upright plate 13 has a vertical groove 15, and a movable block 16 is movably installed inside each vertical groove 15. A pressure plate 17 is fixedly installed between the movable blocks 16. When the pressure plate 17 slides, it will cause the movable blocks 16 to slide inside the vertical groove 15. A slitting blade 18 is fixedly installed at the bottom of the pressure plate 17. When the pressure plate 17 slides, it will cause the slitting blade 18 to slide, so that the protective film can be slid by the slitting blade 18. Guide rods 19 are movably installed at both ends of the top of the carrying plate 14, and the bottom of the guide rods 19 penetrates through the carrying plate 14. It is fixedly connected to the top of the pressure plate 17. When the pressure plate 17 slides, it will drive the guide rod 19 to slide inside the carrier plate 14. A pneumatic cylinder 20 is fixedly installed on the top of the carrier plate 14, and the output end of the pneumatic cylinder 20 passes through the carrier plate 14 and is fixedly connected to the top of the pressure plate 17. When the pneumatic cylinder 20 is running, it will cause the pressure plate 17 to slide. A fixing plate 21 is fixedly installed on the top of the base plate 1, and a round shaft 22 is rotatably installed on one end of the fixing plate 21. The design of the fixing plate 21 and the round shaft 22 makes it convenient to install the PET protective film.
[0026] Working principle: First, the operator places the inner surface of the PET protective film on the outer surface of the round shaft 22, then pulls the protective film and places it between the top of the base plate 1 and the vertical plate 2. Next, the operator slides the handle 10, causing it to slide off the outer surface of the fixing frame 12. The handle 10 then causes the top plate 9 to slide, at which point the spring 6 is compressed. The top plate 9 then causes the round rod 4 to slide, which in turn causes the connecting plate 5 to slide and the spring 6 to rebound. Simultaneously, the connecting plate 5 causes the clamping plate 7 and the roller 8 to slide until the bottom of the clamping plate 7 is placed on top of the base plate 1. The PET protective film then moves between the base plate 1 and the roller 8. Next, the protective film is pulled and placed between the vertical plates 13. When the PET protective film is placed under the slitting blade 18, the pneumatic cylinder 20 is activated. The operation of the pneumatic cylinder 20 will cause the pressure plate 17 to slide. Then, the pressure plate 17 will drive the guide rod 19 to slide inside the carrier plate 14. At this time, the pressure plate 17 will also drive the moving block 16 to slide inside the vertical groove 15. At the same time, the pressure plate 17 will drive the slitting blade 18 to slide, so that the PET protective film can be automatically slitted by the slitting blade 18.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A PET protective film slitting machine, comprising a base plate (1), characterized in that: Vertical plates (2) are fixedly installed at both ends of the top of the base plate (1). A horizontal plate (3) is fixedly installed at the top of the vertical plate (2). A round rod (4) is movably installed at both ends of the top of the horizontal plate (3). The bottom of the round rod (4) passes through the horizontal plate (3) and extends to the bottom of the horizontal plate (3). A connecting plate (5) is fixedly installed at the bottom of the round rod (4). A spring (6) is fixedly installed between the connecting plate (5) and the horizontal plate (3). The inner surface of the spring (6) is movably connected to the outer surface of the round rod (4). A clamping plate (7) is fixedly installed at both ends of the bottom of the connecting plate (5), and a roller (8) is rotatably installed between the clamping plates (7).
2. A PET protective film slitting machine according to claim 1, characterized in that: A top plate (9) is fixedly installed on the top of the round rod (4), and a handle (10) is hinged to the top of the top plate (9). A slot (11) is provided on one side of the handle (10). A fixing frame (12) is fixedly installed on the top of the horizontal plate (3). A vertical plate (13) is fixedly installed on both ends of the top of the bottom plate (1). A carrying plate (14) is fixedly installed on the top of the vertical plate (13), and a bracket (23) is fixedly installed at the four corners of the bottom of the bottom plate (1).
3. A PET protective film slitting machine according to claim 2, characterized in that: Each of the upright plates (13) has a vertical groove (15) at one end. Each vertical groove (15) has a movable block (16) installed inside. A pressure plate (17) is fixedly installed between the movable blocks (16), and a slitting blade (18) is fixedly installed at the bottom of the pressure plate (17).
4. A PET protective film slitting machine according to claim 2, characterized in that: Guide rods (19) are movably installed at both ends of the top of the loading plate (14), and the bottom of the guide rods (19) penetrates the loading plate (14) and is fixedly connected to the top of the pressure plate (17).
5. A PET protective film slitting machine according to claim 2, characterized in that: A pneumatic cylinder (20) is fixedly installed on the top of the loading plate (14), and the output end of the pneumatic cylinder (20) passes through the loading plate (14) and is fixedly connected to the top of the pressure plate (17).
6. A PET protective film slitting machine according to claim 1, characterized in that: A fixing plate (21) is fixedly installed on the top of the base plate (1), and a round shaft (22) is rotatably installed on one end of the fixing plate (21).