Convenient plastic protective film cutting machine

Abstract

The utility model discloses a portable plastic protective film cutting machine, it relates to portable protective film technical field, including box and lifting mechanism, the lifting mechanism includes the threaded rod of penetrating and threaded connection at the box top, the top of threaded rod is provided with the hand handle, the bottom of threaded rod is rotatingly connected with the first fixed plate, and the first fixed plate is fixed on the box top. A sliding rod penetrates through the top of the box body and is in sliding connection with the top of the box body, the sliding rod is fixedly connected with a second fixing plate, the second fixing plate is fixedly connected with a cutting table, and a cutting mechanism is arranged at the top of the box body 1. By arranging the cutting mechanism, the cutting depth can be automatically adjusted according to the thickness of a plastic protective film, when a thin protective film is cut, a spring is subjected to small pressure, a circular knife only cuts into a proper depth, the situation that the protective film is damaged due to excessive cutting is avoided, for a thick protective film, the spring can be properly compressed when the circular knife is subjected to large resistance, and the cutting depth is adjusted. And the circular knife is always kept in a stable cutting state.

Description

Technical Field

[0001] This utility model relates to the field of portable protective film technology, and in particular to a portable plastic protective film cutting machine. Background Technology

[0002] With the booming development of the manufacturing industry, product packaging is crucial for product protection, transportation, and sales. Plastic protective film, as a common packaging material, is widely used in many industries such as electronics, machinery, food, and chemicals.

[0003] In today's numerous industries, plastic protective film plays an indispensable role in protection and packaging. From the production, transportation, and storage of various products, including electronic products and precision instruments, to everyday consumer goods, there is a large and diverse demand for plastic protective film. As the level of precision in manufacturing continues to increase and packaging technology advances, the requirements for cutting and processing plastic protective film are becoming increasingly stringent. When dealing with plastic protective film of different thicknesses, if the cutting pressure is too high for thinner films, it is easy to cause scratches and damage to the film surface; while for thicker films, insufficient pressure will prevent the film from being cut smoothly, resulting in rough and uneven cuts, or even interruption of the cutting process. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the background art by proposing a convenient plastic protective film cutting machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A portable plastic protective film cutting machine includes a housing and a lifting mechanism. The lifting mechanism includes a threaded rod that passes through and is threadedly connected to the top of the housing. A hand handle is provided at the top of the threaded rod, and a first fixed plate is rotatably connected to the bottom of the threaded rod. A slide rod passes through and is slidably connected to the top of the housing. A second fixed plate is fixedly connected to the bottom of the slide rod, and a cutting table is fixedly connected to the side wall of the second fixed plate.

[0007] Preferably, the top of the box is provided with a cutting mechanism, the cutting mechanism including a groove opened at the center of the top of the box, a slider slidably connected in the groove, a sleeve passing through and fixedly connected to the slider, a round rod passing through and slidably connected to the sleeve, a spring fixedly connected to the top of the sleeve, the end of the spring away from the sleeve being fixedly connected to the top of the round rod, and a round blade rotatably connected to the bottom inner wall of the round rod.

[0008] Preferably, the opening end of the box is fixedly connected to two hinges, and the two hinges are fixedly connected to two boxes. The box and the boxes are connected by hinges, and handles are installed on the two boxes.

[0009] Preferably, the top of the cutting table is provided with a cutting groove, and the extending direction of the cutting groove is perpendicular to the rotation axis of the circular knife.

[0010] Preferably, an unwinding shaft is rotatably connected to the inner wall of the box side wall, and a winding shaft is rotatably connected to the inner wall of the box side wall.

[0011] Preferably, the sidewall of the cutting table is fixedly connected to the sidewall of the first fixing plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, through its cutting mechanism, can automatically adjust the cutting depth according to the thickness of the plastic protective film. When cutting thinner protective films, the spring experiences less pressure, and the circular blade only cuts to an appropriate depth, avoiding over-cutting and damage to the protective film. For thicker protective films, the spring can compress appropriately when the circular blade encounters greater resistance, ensuring the blade maintains a stable cutting state. This design allows the film cutting machine to handle plastic protective films of various thicknesses. Whether it's extremely thin cling film used for food packaging (thickness may be between 0.02-0.05mm) or thicker plastic film used for the protection of large machinery (thickness can reach 1-2mm), the spring-loaded circular blade can effectively handle both.

[0014] 2. This utility model, by setting up a lifting mechanism, can adjust according to the actual thickness of the plastic protective film. For example, when cutting a thicker industrial plastic protective film, the cutting table and fixing plate can be raised to ensure that the protective film is in the optimal tension and position state during the cutting process, ensuring that the circular blade can cut into the protective film vertically, thereby ensuring the flatness and straightness of the cut and effectively avoiding the problem of skewed cuts caused by cutting angle deviation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a convenient plastic protective film cutting machine proposed in this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the internal structure of the housing 1 of a portable plastic protective film cutting machine proposed in this utility model.

[0017] Figure 3 This is a schematic cross-sectional view of the internal structure of the sleeve of a portable plastic protective film cutting machine proposed in this utility model.

[0018] Figure 4 for Figure 3 A schematic diagram of the structure at point A.

[0019] In the diagram: 1. Box body, 2. Box door, 3. Hinge, 4. Handle, 5. Threaded rod, 6. Hand handle, 7. Slide rod, 8. First fixing plate, 9. Second fixing plate, 10. Cutting table, 11. Cutting groove, 12. Slide groove, 13. Slider, 14. Sleeve, 15. Round rod, 16. Spring, 17. Round knife, 18. Rewinding shaft, 19. Unwinding shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A portable plastic protective film cutting machine includes a housing 1 and a lifting mechanism. The lifting mechanism includes a threaded rod 5 that passes through and is threadedly connected to the top of the housing 1. A hand handle 6 is provided at the top of the threaded rod 5. The hand handle 6 and the threaded rod 5 form a stable connection, so that the hand handle 6 can effectively transmit external force to the threaded rod 5 to drive it to rotate. A first fixed plate 8 is rotatably connected to the bottom of the threaded rod 5. A slide rod 7 passes through and is slidably connected to the top of the housing 1. A second fixed plate 9 is fixedly connected to the bottom of the slide rod 7, so that the slide rod 7 can drive the second fixed plate 9 to perform synchronous up and down displacement. A cutting table 10 is fixedly connected to the side wall of the second fixed plate 9.

[0022] A cutting mechanism is provided on the top of the housing 1. The cutting mechanism includes a groove 12 opened in the center of the top of the housing 1. A slider 13 is slidably connected in the groove 12. A sleeve 14 is fixedly connected through the slider 13. This fixed connection ensures the firmness and stability of the connection between the slider 13 and the sleeve 14, so that the movement of the slider 13 can be accurately transmitted to the sleeve 14. A round rod 15 is slidably connected through the sleeve 14. A spring 16 is fixedly connected to the top of the sleeve 14. This fixed connection ensures that the spring 16 will not fall off or shift during operation. The end of the spring 16 away from the sleeve 14 is fixedly connected to the top of the round rod 15, which can provide appropriate elastic restoring force and buffering effect when the round rod 15 moves relative to the sleeve 14. A round blade 17 is rotatably connected to the bottom inner wall of the round rod 15. The rotatable connection structure between the round rod 15 and the round blade 17 adopts a bushing assembly to ensure that the round blade 17 can rotate smoothly at the bottom of the round rod 15.

[0023] Two hinges 3 are fixedly connected to the open end of the box body 1. This connection ensures that the hinges 3 will not loosen, deform or shift during long-term use, and can withstand various stresses and torques generated during the opening and closing of the box door 2. The two hinges 3 are fixedly connected to the two box doors 2. The box body 1 and the box doors 2 are connected by the hinges 3, so that the box doors 2 can open and close within an angle range of 0 to 180 degrees. Handles 4 are installed on the two box doors 2. A cutting groove 11 is provided on the top of the cutting table 10. The extension direction of the cutting groove 11 is perpendicular to the rotation axis of the circular knife 17, so as to ensure that the plastic protective film can be accurately cut along the predetermined cutting path during the cutting operation. A roll-up shaft 19 is rotatably connected to the inner wall of the side wall of the box body 1, and a take-up shaft 18 is rotatably connected to the inner wall of the side wall of the box body 1. The side wall of the cutting table 10 is fixedly connected to the side wall of the first fixed plate 8.

[0024] The detailed working process of this utility model is as follows:

[0025] First, open the box door 2, install the plastic protective film roll on the unwinding shaft 19, lead one end of the plastic protective film out from the unwinding shaft 19 and place it on the take-up shaft 18, then manually rotate the unwinding shaft 19 to release the plastic protective film. The take-up shaft 18 rotates to retract the plastic protective film until the required length is reached.

[0026] Manually turning the hand crank 6 drives the threaded rod 5 to rotate. The rotation of the threaded rod 5 causes the first fixed plate 8, the second fixed plate 9, and the cutting table 10 to move upward until the first fixed plate 8 and the second fixed plate 9 fix the unwinding shaft 19 and the rewinding shaft 18, preventing them from rotating. At the same time, the upward movement of the cutting table 10 squeezes the plastic protective film upward, keeping the plastic protective film under appropriate tension.

[0027] Manually press the round rod 15 to move it downwards until the round knife 17 comes into contact with the plastic protective film. At the same time, manually pull the slider 13 to move the sleeve 14, the round rod 15 and the round knife 17 along the slide groove 12 to cut the plastic protective film. After cutting, remove the plastic protective film from the take-up shaft 18.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A portable plastic protective film cutting machine, comprising a housing (1) and a lifting mechanism, characterized in that: The lifting mechanism includes a threaded rod (5) that passes through and is threadedly connected to the top of the housing (1). A hand handle (6) is provided at the top of the threaded rod (5). A first fixing plate (8) is rotatably connected to the bottom of the threaded rod (5). A slide rod (7) passes through and is slidably connected to the top of the housing (1). A second fixing plate (9) is fixedly connected to the bottom of the slide rod (7). A cutting table (10) is fixedly connected to the side wall of the second fixing plate (9).

2. The portable plastic protective film cutting machine according to claim 1, characterized in that: The top of the box (1) is provided with a cutting mechanism, which includes a groove (12) opened at the center of the top of the box (1). A slider (13) is slidably connected in the groove (12). A sleeve (14) is passed through and fixedly connected to the slider (13). A round rod (15) is passed through and slidably connected to the sleeve (14). A spring (16) is fixedly connected to the top of the sleeve (14). The end of the spring (16) away from the sleeve (14) is fixedly connected to the top of the round rod (15). A round knife (17) is rotatably connected to the bottom inner wall of the round rod (15).

3. The portable plastic protective film cutting machine according to claim 1, characterized in that: The box body (1) has two hinges (3) fixedly connected to its open end. The two hinges (3) are fixedly connected to two boxes (2). The box body (1) and the boxes (2) are connected by hinges (3). The two boxes (2) are equipped with handles (4).

4. The portable plastic protective film cutting machine according to claim 1, characterized in that: The top of the cutting table (10) is provided with a cutting groove (11), and the extension direction of the cutting groove (11) is perpendicular to the rotation axis of the circular knife (17).

5. A portable plastic protective film cutting machine according to claim 1, characterized in that: The inner wall of the side wall of the box (1) is rotatably connected to an unwinding shaft (19), and the inner wall of the side wall of the box (1) is rotatably connected to a rewinding shaft (18).

6. A portable plastic protective film cutting machine according to claim 1, characterized in that: The side wall of the cutting table (10) is fixedly connected to the side wall of the first fixing plate (8).

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