High-viscosity PE protective film stretching device

Abstract

The utility model relates to the technical field of protective film processing, in particular to a high-viscosity PE protective film stretching device which comprises a rack, an upper pressing plate and a mounting frame. A mounting shaft for mounting a film roll is arranged on the rack, a mounting frame and a moving mechanism a for driving the mounting frame to slide are arranged on the rack in a sliding manner, and a clamping plate assembly for fixing a film is arranged on the mounting frame; a lower pressing plate is arranged on the rack, and a telescopic mechanism used for adjusting the height of the upper pressing plate is arranged on the rack; a cutting knife and a moving mechanism b for driving the cutting knife to move are arranged on the machine frame in a sliding mode, the cutting knife is located below the lower pressing plate, and through holes are formed in the lower pressing plate and the upper pressing plate. The protective film firstly penetrates through the space between the lower pressing plate and the upper pressing plate, the protective film is pressed by the two pressing plates after being stretched out, so that the protective film can be conveniently fixed and prevented from being affected by sticky surfaces during cutting, the end close to a film roll is pressed, the protective film can be stretched again next time, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of protective film processing, in particular to a high-viscosity PE protective film stretching device. Background Art

[0002] PE protective film is a macromolecular organic compound with the simplest structure. It is based on special polyethylene plastic film. PE protective film protects the protected product from pollution, corrosion and scratches during production, transportation, storage and use, and protects the original smooth and shiny surface. High-viscosity protective film has good adhesion, good peeling performance, and no residual glue. It is suitable for fine-grained frosted boards, aluminum-plastic boards, and difficult-to-stick plastic boards.

[0003] A Chinese patent with authorization announcement number CN217295079U discloses a PE protective film stretching device, including two fixed plates, a fixed roller and a clamping plate. The two fixed plates are arranged at intervals, and the fixed roller is provided with a protective film. Slide grooves are provided on the two fixed plates, and the two ends of the clamping plate are respectively arranged in two groups of slide grooves. Fixed rods are fixedly installed in the two groups of slide grooves, and the two fixed rods pass through the clamping plates. It also includes a stretching mechanism, which is rotatably installed on one of the fixed plates. The stretching mechanism is used to pull the clamping plate to move. The utility model fixes the protective film on the fixed roller, and then merges the two limiting plates to achieve the effect of lateral movement of the limiting protective film. The sprocket and chain are driven by the rotation of the motor, so that the gear rotates to drive the rack to move, so that the clamping plate pulls the protective film to move, thereby achieving the effect of automatically stretching the protective film.

[0004] However, the above technical solution has the following defects: in the above PE protective film stretching device, two limit plates are used to press one end of the protective film and stretch it. When it is stretched to a suitable length, it needs to be manually cut and removed for use. There is no fixing device at the other end of the protective film. When it is removed, the protective film will wrinkle and stick together and cannot be used, causing waste. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and propose a high-viscosity PE protective film stretching device.

[0006] The technical solution of the utility model: a high-viscosity PE protective film stretching device, including a frame, an upper pressing plate and a mounting frame;

[0007] The frame is provided with a mounting shaft for mounting the film roll, the frame is slidably provided with a mounting frame and a moving mechanism a for driving the mounting frame to slide, and the mounting frame is provided with a clamping plate assembly for fixing the film;

[0008] A lower pressing plate is provided on the frame, and a telescopic mechanism for adjusting the height of the upper pressing plate is provided on the frame;

[0009] A cutting knife and a moving mechanism b for driving the cutting knife to move are slidably arranged on the frame. The cutting knife is located below the lower pressing plate. Through holes are arranged on the lower pressing plate and the upper pressing plate.

[0010] Preferably, the splint assembly comprises a splint;

[0011] A rotating shaft is arranged on the clamping plate, the rotating shaft is rotatably connected to the mounting frame, and a rotating component for driving the rotating shaft to rotate is arranged on the mounting frame.

[0012] Preferably, the rotating assembly includes a gear and a rack;

[0013] The gear is connected to the rotating shaft, the rack is slidably connected to the mounting frame, the rack is meshed with the gear, an electric push rod is arranged on the mounting frame, and the electric push rod is connected to the rack.

[0014] Preferably, protrusions are provided on the end surfaces where the mounting frame and the clamping plate are clamped to each other.

[0015] Preferably, the structures of the moving mechanism a and the moving mechanism b are the same, and the moving directions of the moving mechanism a and the moving mechanism b are arranged vertically.

[0016] Preferably, the moving mechanism a comprises a screw rod a;

[0017] The mounting frame is provided with a slider, the slider is slidably connected to the frame, the screw rod a is rotatably connected to the frame, a driving component a for driving the screw rod a to rotate is provided on the frame, and the slider is threadedly connected to the screw rod a;

[0018] The moving mechanism b comprises a screw rod b;

[0019] The two ends of the screw rod b are rotatably connected to the frame, a mounting block is arranged at the lower end of the cutting knife, the mounting block is slidably connected to the frame, the mounting block is threadedly connected to the screw rod b, a driving component b is arranged on the frame, and the driving component b is transmission-connected to the screw rod b.

[0020] Preferably, the upper pressing plate and the lower pressing plate are located between the mounting shaft and the mounting frame.

[0021] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0022] 1. In the utility model, the protective film first passes through the lower pressing plate and the upper pressing plate. After being stretched out, the two pressing plates press the protective film tightly to prevent the sticky surfaces from sticking together during cutting and affecting the use. The end of the film roll is pressed tightly to facilitate the next stretching of the protective film for more convenient use.

[0023] 2. In the clamping plate assembly, the electric push rod is started to drive the rack to slide on the mounting frame, the rack is meshed with the gear, the gear drives the rotating shaft and the clamping plate to rotate, the rotation of the clamping plate can clamp or loosen the end of the film, the clamping assembly has a simple structure, a high degree of automation and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of an embodiment of the utility model in use.

[0025] Figure 2 The utility model is a structural schematic diagram of a high-viscosity PE protective film stretching device.

[0026] Figure 3 This is a schematic structural diagram of a moving mechanism a in an embodiment of the present utility model.

[0027] Figure 4 for Figure 2 Schematic diagram of the structure at A in the middle.

[0028] Figure numerals: 1. frame; 2. film roll; 3. mounting shaft; 4. telescopic mechanism; 5. lower pressure plate; 6. upper pressure plate; 7. through hole; 8. clamping plate; 9. mounting frame; 10. drive component b; 11. slider; 12. screw rod a; 13. drive component a; 14. mounting block; 15. screw rod b; 16. cutting knife; 17. bump; 18. gear; 19. electric push rod; 20. rack; 21. rotating shaft. DETAILED DESCRIPTION

[0029] Embodiment 1

[0030] like Figure 1-Figure 4 As shown, a high-viscosity PE protective film stretching device proposed by the utility model includes a frame 1, an upper pressing plate 6 and a mounting frame 9;

[0031] A mounting shaft 3 for mounting the film roll 2 is rotatably provided on the frame 1, a mounting frame 9 and a moving mechanism a for driving the mounting frame 9 to slide are slidably provided on the frame 1, a clamping plate assembly for fixing the film is provided on the mounting frame 9, and the moving mechanism a drives the mounting frame 9 and the clamping plate assembly to move away from the film roll 2;

[0032] A lower pressing plate 5 is provided on the frame 1, and a telescopic mechanism 4 for adjusting the height of an upper pressing plate 6 is provided on the frame 1. The number of the telescopic mechanisms 4 is two, and the two telescopic mechanisms 4 are symmetrically distributed on the frame 1. The two telescopic mechanisms 4 are respectively connected to the two ends of the upper pressing plate 6, and the telescopic mechanisms 4 can be hydraulic cylinder mechanisms;

[0033] A cutting knife 16 and a moving mechanism b for driving the cutting knife 16 are slidably provided on the frame 1. The cutting knife 16 is located below the lower pressing plate 5. Both the lower pressing plate 5 and the upper pressing plate 6 are provided with a through hole 7. The through hole 7 is a long hole. The upper end of the cutting knife 16 passes through the through hole 7 of the lower pressing plate 5.

[0034] The upper pressing plate 6 and the lower pressing plate 5 are located between the mounting shaft 3 and the mounting frame 9 .

[0035] After the film is rolled up, the ends of the films are moved to the upper and lower pressure plates 6 and 5, and the ends of the films are clamped by the clamping plate assembly on the mounting frame 9. The moving mechanism a drives the mounting frame 9 and the ends of the films to gradually move away from the film roll 2. When the protective film of a suitable length is stretched out, the telescopic mechanism 4 drives the upper pressure plate 6 to move downward and press on the upper end of the lower pressure plate 5 and fix the film. The moving mechanism b drives the cutting knife 16 to move, and the cutting knife 16 passes through the through hole 7 of the lower pressure plate 5, and the cutting knife 16 cuts the film neatly. In the utility model, the protective film first passes through the lower pressure plate 5 and the upper pressure plate 6. After the film is stretched out, the two pressure plates press the protective film to facilitate fixation to prevent the sticky surfaces from sticking together and affecting the use during cutting. The ends of the film roll 2 are pressed tightly to facilitate the use of the protective film when it is stretched again.

[0036] Embodiment 2

[0037] like Figure 2-Figure 4 As shown, the high-viscosity PE protective film stretching device proposed by the utility model, compared with the first embodiment, the clamping plate assembly in this embodiment includes a clamping plate 8;

[0038] A rotating shaft 21 is provided on the clamping plate 8 , and the rotating shaft 21 is rotatably connected to the mounting frame 9 , and a rotating component for driving the rotating shaft 21 to rotate is provided on the mounting frame 9 .

[0039] The rotating assembly includes a gear 18 and a rack 20;

[0040] The gear 18 is connected to the rotating shaft 21 , the rack 20 is slidably connected to the mounting frame 9 , the rack 20 is meshed and connected to the gear 18 , and an electric push rod 19 is provided on the mounting frame 9 , and the electric push rod 19 is connected to the rack 20 .

[0041] Furthermore, the end surfaces of the mounting frame 9 and the clamping plate 8 that are clamped to each other are both provided with protrusions 17, and the protrusions 17 increase the friction between the film and the clamping plate 8 and the mounting frame 9 to facilitate clamping of the film.

[0042] In this embodiment, the electric push rod 19 is started to drive the rack 20 to slide on the mounting frame 9, and the rack 20 is meshed with the gear 18. The gear 18 drives the rotating shaft 21 and the clamping plate 8 to rotate. The rotation of the clamping plate 8 can clamp or loosen the end of the film.

[0043] Embodiment 3

[0044] like Figure 3 As shown, the utility model proposes a high-viscosity PE protective film stretching device. Compared with the first embodiment, the structures of the moving mechanism a and the moving mechanism b in this embodiment are the same, and the moving directions of the moving mechanism a and the moving mechanism b are vertically arranged.

[0045] The moving mechanism a includes a screw rod a12;

[0046] The mounting frame 9 is provided with a slider 11, the slider 11 is slidably connected to the frame 1, the screw rod a12 is rotatably connected to the frame 1, the frame 1 is provided with a driving assembly a13 for driving the screw rod a12 to rotate, and the slider 11 is threadedly connected to the screw rod a12;

[0047] The moving mechanism b includes a screw rod b15;

[0048] The two ends of the screw rod b15 are rotatably connected to the frame 1, and the lower end of the cutting knife 16 is provided with a mounting block 14, which is slidably connected to the frame 1, and the mounting block 14 is threadedly connected to the screw rod b15. A driving component b10 is provided on the frame 1, and the driving component b10 is transmission-connected to the screw rod b15;

[0049] The axial direction of the screw rod a12 is the stretching direction of the film, and the axis of the screw rod b15 is perpendicular to the axis of the screw rod a12.

[0050] In this embodiment, the driving component a13 is started to drive the screw rod a12 to rotate, the slider 11 moves along the axial direction of the screw rod a12, the slider 11 drives the mounting frame 9 to slide on the frame 1, and the clamping plate assembly clamps the end of the film and moves away from the mounting shaft 3; the driving component b10 is started to drive the screw rod b15 to start, the mounting block 14 drives the cutting knife 16 to move along the axial direction of the screw rod b15, and the cutting knife 16 cuts the film.

[0051] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A high-viscosity PE protective film stretching device, characterized in that: It comprises a frame (1), an upper pressing plate (6) and a mounting frame (9); The frame (1) is provided with a mounting shaft (3) for mounting a film roll (2), the frame (1) is slidably provided with a mounting frame (9) and a moving mechanism a for driving the mounting frame (9) to slide, and the mounting frame (9) is provided with a clamping plate assembly for fixing the film; A lower pressing plate (5) is provided on the frame (1), and a telescopic mechanism (4) for adjusting the height of an upper pressing plate (6) is provided on the frame (1); A cutting knife (16) and a moving mechanism b for driving the cutting knife (16) to move are slidably provided on the frame (1); the cutting knife (16) is located below the lower pressing plate (5); and through holes (7) are provided on both the lower pressing plate (5) and the upper pressing plate (6).

2. A high-viscosity PE protective film stretching device according to claim 1, characterized in that: The splint assembly comprises a splint (8); A rotating shaft (21) is provided on the clamping plate (8), and the rotating shaft (21) is rotatably connected to the mounting frame (9). The mounting frame (9) is provided with a rotating assembly for driving the rotating shaft (21) to rotate.

3. A high-viscosity PE protective film stretching device according to claim 2, characterized in that: The rotating assembly includes a gear (18) and a rack (20); The gear (18) is connected to the rotating shaft (21), the rack (20) is slidably connected to the mounting frame (9), the rack (20) is meshedly connected to the gear (18), and the mounting frame (9) is provided with an electric push rod (19), which is connected to the rack (20).

4. A high-viscosity PE protective film stretching device according to claim 2, characterized in that: The end surfaces of the mounting frame (9) and the clamping plate (8) that are clamped to each other are both provided with projections (17).

5. The high-viscosity PE protective film stretching device according to claim 1, characterized in that: The structures of the moving mechanism a and the moving mechanism b are the same, and the moving directions of the moving mechanism a and the moving mechanism b are arranged vertically.

6. A high-viscosity PE protective film stretching device according to claim 5, characterized in that: The moving mechanism a comprises a screw rod a (12); The mounting frame (9) is provided with a slider (11), the slider (11) is slidably connected to the frame (1), the screw rod a (12) is rotatably connected to the frame (1), the frame (1) is provided with a driving assembly a (13) for driving the screw rod a (12) to rotate, and the slider (11) is threadedly connected to the screw rod a (12); The moving mechanism b comprises a screw rod b (15); The two ends of the screw rod b (15) are rotatably connected to the frame (1); the lower end of the cutting knife (16) is provided with a mounting block (14); the mounting block (14) is slidably connected to the frame (1); the mounting block (14) is threadedly connected to the screw rod b (15); a driving component b (10) is provided on the frame (1); and the driving component b (10) is transmission-connected to the screw rod b (15).

7. The high-viscosity PE protective film stretching device according to claim 1, characterized in that: The upper pressing plate (6) and the lower pressing plate (5) are located between the mounting shaft (3) and the mounting frame (9).

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