Automatic cutting machine for protective film
Through innovative design of the cutting and cleaning components, the problem of difficulty in adjusting the cutting depth in existing automatic protective film cutting machines has been solved, achieving stable cutting and efficient cleaning of protective films of different thicknesses, thereby improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN YUMEI PHOTOELECTRIC CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-07-24
AI Technical Summary
Existing automatic protective film cutting machines have difficulty in flexibly adjusting the cutting depth of the blades, which affects production efficiency and product quality when dealing with protective films of different thicknesses.
The design incorporates a cutting component and a cleaning component. The cutting component adjusts the movement trajectory of the cutting blade through a slider and a turntable, while the cleaning component combines a scraper and a cleaning brush that work in tandem with a telescopic rod and a spring, enabling flexible cutting and efficient cleaning of protective films of different thicknesses.
It enables stable cutting and efficient cleaning of protective films of different thicknesses, improving production efficiency and product quality, and ensuring the smoothness and cleanliness of the cutting process.
Smart Images

Figure CN224544643U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of protective film cutting technology, and in particular to an automatic protective film cutting machine. Background Technology
[0002] With the rapid development of industries such as electronics manufacturing, optical screens, and packaging materials, the demand for protective films is increasing, and the requirements for their cutting accuracy, efficiency, and consistency are constantly improving. Manual cutting not only has limited capacity, but also makes it difficult to meet the strict dimensional accuracy and quality standards in mass production. At the same time, it also has problems such as large material waste and high labor costs. Against this background, automatic protective film cutting machines have emerged.
[0003] Existing automatic protective film cutting machines drive the cutting blades through mechanical transmission or servo system, and in conjunction with the feeding mechanism, position the protective film rolls according to the preset size. After the photoelectric sensor detects the material position, the control system triggers the cutting action, so that the cutting device cuts the protective film along a fixed trajectory or according to the preset program. At the same time, the receiving mechanism collects the finished products, realizing an automated process from feeding to cutting to receiving.
[0004] However, existing automatic protective film cutting machines struggle to flexibly adjust the cutting depth of the blades when dealing with protective films of different thicknesses and specifications, affecting production efficiency and product quality. Therefore, an automatic protective film cutting machine is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an automatic protective film cutting machine, which aims to improve the problem in the prior art that the equipment has difficulty in flexibly adjusting the cutting depth of the blade when dealing with protective films of different thicknesses and specifications, thus affecting production efficiency and product quality.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic protective film cutting machine, comprising a worktable, a cutting component disposed on the top of the worktable, and a cleaning component disposed on the right side of the worktable. The cutting component comprises two side plates fixedly connected to the top of the worktable. A first motor is fixedly connected to the side wall of one of the side plates. A first turntable is fixedly connected to the output end of the first motor. A slider is slidably connected inside the first turntable. A threaded rod is threadedly connected inside the slider. A second turntable is fixedly connected to the side wall of the slider. A transmission rod is slidably connected inside the second turntable. Fixing blocks are fixedly connected to the opposite side walls of the two side plates. Columns are slidably connected inside each of the two fixing blocks. A cutting blade is fixedly connected to the bottom between the two columns. A connecting rod is fixedly connected to the top between the two columns. A groove is formed on the surface of the second turntable.
[0007] As a further description of the above technical solution:
[0008] The cleaning assembly includes a mounting cavity fixedly connected to the bottom of the workbench, a plurality of telescopic rods fixedly connected inside the mounting cavity, springs sleeved on the surface of the telescopic rods, a scraper fixedly connected to one end of the springs, a second motor fixedly connected to the side wall of the workbench, and a cleaning brush fixedly connected to the output end of the second motor;
[0009] As a further description of the above technical solution:
[0010] A conveyor belt is fixedly connected inside the workbench, and a receiving hopper is fixedly connected to the left side of the workbench;
[0011] As a further description of the above technical solution:
[0012] The first turntable is rotatably connected to the side wall of the side plate, and the threaded rod is rotatably connected inside the first turntable;
[0013] As a further description of the above technical solution:
[0014] One of the columns is slidably connected to the side wall of the second turntable, and the transmission rod is slidably connected inside the slide groove;
[0015] As a further description of the above technical solution:
[0016] The slider has a trapezoidal structure, and the cutting blade abuts against the surface of the conveyor belt;
[0017] As a further description of the above technical solution:
[0018] One end of the telescopic rod is fixedly connected to the bottom of the scraper, and the scraper abuts against the surface of the conveyor belt.
[0019] As a further description of the above technical solution:
[0020] The cleaning brush abuts against the surface of the conveyor belt.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, through the structural design of the cutting component, the first motor is started to drive the first turntable to rotate. The second turntable is linked by the slider, causing the transmission rod to move in the groove, thereby driving the column to slide up and down precisely in the fixed block. This stably and efficiently drives the cutting blade to perform the cutting operation, ensuring the smoothness and stability of the cutting of the protective film. When facing protective films of different thicknesses and needing to adjust the cutting depth, the position of the slider in the first turntable can be flexibly adjusted by rotating the threaded rod, cleverly changing the center position of the second turntable, and controlling the movement trajectory of the column. This solves the problem in the prior art that the equipment is difficult to flexibly adjust the cutting depth of the blade when facing protective films of different thicknesses, which affects production efficiency and product quality.
[0023] 2. In this utility model, through the structural design of the cleaning component, the telescopic rod and spring installed in the mounting cavity work together to provide a stable and self-adjustable support structure for the scraper. The elastic deformation characteristics of the spring allow the scraper to automatically adjust the pressure according to the actual situation while adhering to the surface being cleaned, avoiding damage caused by excessive pressure or incomplete cleaning due to insufficient pressure. The drive design of the second motor provides the power source for the operation of the cleaning brush. The toothed structure of the cleaning brush is carefully designed to reach into fine places, effectively removing various stains and impurities, preventing dust and impurities from sticking to the protective film, improving product quality, and enhancing the practicality of the automatic protective film cutting machine. Attached Figure Description
[0024] Figure 1 This is a three-dimensional schematic diagram of an automatic protective film cutting machine proposed in this utility model;
[0025] Figure 2 This is a schematic diagram of the cutting component of an automatic protective film cutting machine proposed in this utility model;
[0026] Figure 3 This is a schematic diagram of the cutting component of an automatic protective film cutting machine proposed in this utility model;
[0027] Figure 4 This is a schematic diagram of the cleaning component of an automatic protective film cutting machine proposed in this utility model;
[0028] Figure 5 This is a schematic diagram of the cleaning brush of an automatic protective film cutting machine proposed in this utility model.
[0029] Legend:
[0030] 1. Workbench; 2. Cutting assembly; 3. Cleaning assembly; 4. Conveyor belt; 5. Receiving hopper; 6. Side plate; 7. First motor; 8. First turntable; 9. Slider; 10. Threaded rod; 11. Second turntable; 12. Transmission rod; 13. Fixing block; 14. Column; 15. Cutting blade; 16. Connecting rod; 17. Slide groove; 18. Mounting cavity; 19. Telescopic rod; 20. Spring; 21. Scraper; 22. Second motor; 23. Cleaning brush. Detailed Implementation
[0031] 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.
[0032] Reference Figures 1-3 This utility model provides an embodiment of an automatic protective film cutting machine, including a workbench 1. A cutting component 2 is installed on the top of the workbench 1 for cutting the protective film. A cleaning component 3 is installed on the right side of the workbench 1 for cleaning the conveyor belt 4. The cutting component 2 includes two side plates 6 fixedly connected to the top of the workbench 1. A first motor 7 is fixedly connected to the side wall of one of the side plates 6, providing a mounting base for the first motor 7. A first turntable 8 is fixedly connected to the output end of the first motor 7, providing a power source for the first turntable 8. A slider 9 is slidably connected inside the first turntable 8. A threaded rod 10 is threadedly connected inside the slider 9. The threaded rod 10 can drive the slider 9 to move inside the first turntable 8. A second turntable 11 is fixedly connected to the side wall of the slider 9. The slider 9 can drive the second turntable 11 to move, thereby changing the center position of the second turntable 11. A transmission rod 12 is slidably connected inside the second turntable 11. Fixing blocks 13 are fixedly connected to the opposite side walls of the two side plates 6. Each of the two fixing blocks 13 has a column 14 slidably connected inside. The rotation of the second turntable 11 drives the columns 14 through the transmission rod 12. 4. The cutting blade 15 is fixedly connected to the bottom of the two columns 14, and the columns 14 can drive the cutting blade 15 to move up and down to complete the cutting work. A connecting rod 16 is fixedly connected to the top of the two columns 14 to make the two columns 14 move synchronously. The surface of the second turntable 11 is provided with a sliding groove 17, which provides moving space for the transmission rod 12. A conveyor belt 4 is fixedly connected inside the worktable 1 to transport the protective film. A receiving hopper 5 is fixedly connected to the left side of the worktable 1 to collect the cut protective film. A turntable 8 is rotatably connected to the side wall of the side plate 6. The first motor 7 drives the first turntable 8 to rotate on the side wall of the side plate 6. The threaded rod 10 is rotatably connected inside the first turntable 8. One of the columns 14 is slidably connected to the side wall of the second turntable 11. The transmission rod 12 is connected to the second turntable 11 and drives the column 14 to rotate on the side wall of the second turntable 11. The transmission rod 12 is slidably connected inside the slide groove 17. The slider 9 has a trapezoidal structure to prevent the slider 9 from detaching from the inside of the first turntable 8. The cutting blade 15 abuts against the surface of the conveyor belt 4 so that the cutting blade 15 can completely cut the protective film.
[0033] Reference Figures 1-5The cleaning component 3 includes a mounting cavity 18 fixedly connected to the bottom of the workbench 1. Multiple telescopic rods 19 are fixedly connected inside the mounting cavity 18, providing a mounting base for the telescopic rods 19. A spring 20 is sleeved on the surface of the telescopic rod 19, and a scraper 21 is fixedly connected to one end of the spring 20. The elastic deformation characteristics of the spring 20 allow the scraper 21 to automatically adjust the pressure according to the actual situation while adhering to the surface to be cleaned, avoiding damage caused by excessive pressure or incomplete cleaning due to insufficient pressure. A second motor 22 is fixedly connected to the side wall of the workbench 1, and a cleaning brush 23 is fixedly connected to the output end of the second motor 22. The second motor 22 provides a power source for the cleaning brush 23. One end of the telescopic rod 19 is fixedly connected to the bottom of the scraper 21, and the scraper 21 abuts against the surface of the conveyor belt 4. The telescopic rod 19 provides a supporting base for the scraper 21, allowing the scraper 21 to adhere to the conveyor belt 4, and the cleaning brush 23 abuts against the surface of the conveyor belt 4, ensuring that the cleaning brush 23 performs deep cleaning on the conveyor belt 4.
[0034] Working principle: After the equipment is started, the conveyor belt 4 begins to operate, smoothly conveying the protective film to the top of the worktable 1. The first motor 7 is turned on, driving the first turntable 8 to rotate. The first turntable 8 is linked to the second turntable 11 through the slider 9. When the second turntable 11 rotates, it drives the transmission rod 12 to rotate in the slide groove 17, which in turn drives the column 14 to slide up and down in the fixed block 13. The column 14 drives the cutting blade 15 to move up and down, realizing the cutting action of the protective film. When it is necessary to adjust the cutting depth, the threaded rod 10 is rotated to change the position of the slider 9 in the first turntable 8, thereby adjusting the center position of the second turntable 11, controlling the movement trajectory of the column 14, and adjusting the cutting depth. During the cutting process of the protective film, the cutting depth of the cutter 15 may generate debris and other impurities. The conveyor belt 4 continues to operate, transporting the protective film towards the receiving hopper 5. The cleaning component starts working, the second motor 22 starts, and drives the cleaning brush 23 to rotate, cleaning the surface of the conveyor belt 4 and removing residual debris. At the same time, the telescopic rod 19 and the spring 20 in the mounting cavity 18 work together. Under the elastic force of the spring 20, the scraper 21 can adaptively adjust its fit with the cleaning surface. The telescopic rod 19 ensures the stability and guidance of the scraper 21's movement, further removing stubborn stains and ensuring the cleanliness of the conveyor belt 4 surface, providing good conditions for the subsequent transport of the protective film.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automatic protective film cutting machine, comprising a worktable (1), characterized in that: A cutting component (2) is provided on the top of the workbench (1), and a cleaning component (3) is provided on the right side of the workbench (1); The cutting assembly (2) includes two side plates (6) fixedly connected to the top of the workbench (1). A first motor (7) is fixedly connected to the side wall of one of the side plates (6). A first turntable (8) is fixedly connected to the output end of the first motor (7). A slider (9) is slidably connected inside the first turntable (8). A threaded rod (10) is threadedly connected inside the slider (9). A second turntable (11) is fixedly connected to the side wall of the slider (9). A transmission rod (12) is slidably connected inside the second turntable (11). Fixing blocks (13) are fixedly connected to the opposite side walls of the two side plates (6). A column (14) is slidably connected inside each of the two fixing blocks (13). A cutting blade (15) is fixedly connected to the bottom between the two columns (14). A connecting rod (16) is fixedly connected to the top between the two columns (14). A groove (17) is opened on the surface of the second turntable (11).
2. The automatic protective film cutting machine according to claim 1, characterized in that: The cleaning component (3) includes a mounting cavity (18) fixedly connected to the bottom of the workbench (1). Multiple telescopic rods (19) are fixedly connected inside the mounting cavity (18). Springs (20) are sleeved on the surface of the telescopic rods (19). A scraper (21) is fixedly connected to one end of the spring (20). A second motor (22) is fixedly connected to the side wall of the workbench (1). A cleaning brush (23) is fixedly connected to the output end of the second motor (22).
3. The automatic protective film cutting machine according to claim 1, characterized in that: The workbench (1) is fixedly connected to a conveyor belt (4), and a receiving hopper (5) is fixedly connected to the left side of the workbench (1).
4. The automatic protective film cutting machine according to claim 1, characterized in that: The first turntable (8) is rotatably connected to the side wall of the side plate (6), and the threaded rod (10) is rotatably connected inside the first turntable (8).
5. The automatic protective film cutting machine according to claim 1, characterized in that: One of the columns (14) is slidably connected to the side wall of the second turntable (11), and the transmission rod (12) is slidably connected inside the groove (17).
6. The automatic protective film cutting machine according to claim 1, characterized in that: The slider (9) has a trapezoidal structure, and the cutting blade (15) abuts against the surface of the conveyor belt (4).
7. The automatic protective film cutting machine according to claim 2, characterized in that: One end of the telescopic rod (19) is fixedly connected to the bottom of the scraper (21), and the scraper (21) abuts against the surface of the conveyor belt (4).
8. The automatic protective film cutting machine according to claim 2, characterized in that: The cleaning brush (23) abuts against the surface of the conveyor belt (4).