Pre-pressing mechanism and degradable film laminating device for paper packaging box

Abstract

The utility model relates to the technical field of paper packing box film covering devices, in particular to a prepressing mechanism and a paper packing box degradable film covering device.The prepressing mechanism comprises an extrusion roller, the extrusion roller is connected with a limiting block through a rotating shaft, the side face of the limiting block is provided with an upper connecting plate, the upper connecting plate penetrates through a limiting hole formed in an upper moving plate to be connected with a fixed plate, and the upper moving plate is provided with a pressing plate; a spring is arranged on the fixing plate; the device has the beneficial effects that a spring pulls a fixing plate, so that a limiting rod moves downwards along a limiting hole, an upper connecting plate, a limiting block and an extrusion roller move downwards, the extrusion roller extrudes a film all the time, the film makes close contact with a paper packaging box, the situation that the film at the concave position of the paper packaging box is subjected to insufficient pressure, and consequently the film covering quality is affected is avoided, and the product quality is improved; the device can be adaptively adjusted when meeting uneven positions of the paper packaging box, and the using effect of the device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of paper packaging box coating device, specifically a pre-pressing mechanism and a paper packaging box biodegradable film coating device. Background Technology

[0002] Paper packaging boxes are a widely used material for packaging various products. They are favored by many industries because of their environmental friendliness, cost-effectiveness, and strong customizability. Paper packaging boxes need to be covered with a film before use.

[0003] In the prior art, a film laminating device is usually used to laminate paper packaging boxes, and during the process, the extrusion roller on the pre-pressing mechanism is used to press the film to cover the paper packaging box for pre-pressing.

[0004] However, traditional pre-pressing mechanisms cannot adapt to the indentations on paper packaging boxes, and the height of the extrusion rollers cannot be adjusted. This results in insufficient pressure on the biodegradable film in the indentations of the paper packaging box, which in turn affects the quality of the paper packaging box lamination and reduces the product qualification rate. To address this problem, this utility model proposes a pre-pressing mechanism and a biodegradable film lamination device for paper packaging boxes. Utility Model Content

[0005] The purpose of this invention is to provide a pre-compression mechanism and a biodegradable film coating device for paper packaging boxes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pre-pressing mechanism, including a pressing roller, the pressing roller being connected to a limiting block via a rotating shaft, an upper connecting plate being provided on the side of the limiting block, the upper connecting plate being connected to a fixed plate through a limiting hole opened on an upper movable plate, and a spring being provided on the fixed plate.

[0007] Preferably, the limiting block has a convex plate-like structure, and the limiting block is stuck in the limiting groove opened on the inner side of the main body of the film coating device, and the limiting groove has a convex groove-like structure.

[0008] Preferably, the limiting block is fixedly connected to the upper connecting plate, the upper connecting plate has a square plate structure, a connecting block is fixedly connected to the side of the upper connecting plate, the connecting block is rotatably connected to the rotating shaft, and extrusion rollers are installed at both ends of the rotating shaft.

[0009] Preferably, a plurality of limiting rods are fixedly connected to the upper surface of the upper connecting plate. The limiting rods are cylindrical in shape and pass through the limiting holes opened on the upper movable plate to be fixedly connected to the fixing plate. The fixing plate is circular in shape.

[0010] Preferably, one end of the spring is fixedly connected to the fixed plate and the other end is fixedly connected to the upper moving plate. A side connecting plate is fixedly connected to the side of the upper moving plate, and a servo motor is fixedly installed on the side of the side connecting plate.

[0011] Preferably, a hydraulic cylinder is fixedly installed on the inner side of the main body of the film coating device, and the telescopic end of the hydraulic cylinder is fixedly connected to the upper surface of the upper moving plate.

[0012] Preferably, the drive shaft of the servo motor is fixedly connected to the rotating shaft of the extrusion roller, and the extrusion roller is rotatably connected to the limiting block through the rotating shaft, and the limiting block can slide along the limiting groove.

[0013] A biodegradable film coating device for paper packaging boxes includes the aforementioned pre-pressing mechanism.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention discloses a pre-compression mechanism and a biodegradable film coating device for paper packaging boxes. A spring pulls a fixed plate, causing a limiting rod to move downwards along a limiting hole. This causes the upper connecting plate, limiting block, and extrusion roller to move downwards, ensuring that the extrusion roller constantly compresses the film, ensuring close contact between the film and the paper packaging box. This prevents insufficient pressure on the film in recessed areas of the paper packaging box, thus avoiding affecting the coating quality. The device can be made adaptively adjustable, so even when encountering uneven areas of the paper packaging box, the device can effectively pre-compress the film. Furthermore, the extrusion roller compresses the edges of the paper packaging box, preventing the film from curling up at the edges and improving the device's performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the device structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 3 for Figure 1 Enlarged structural diagram at point B;

[0019] Figure 4 This is a partial structural diagram of the device of this utility model;

[0020] Figure 5 for Figure 4 Enlarged structural diagram at point C.

[0021] In the diagram: 1. Main body of the film coating device; 2. Limiting groove; 3. Limiting block; 4. Upper connecting plate; 5. Extrusion roller; 6. Limiting rod; 7. Upper moving plate; 8. Limiting hole; 9. Fixing plate; 10. Spring; 11. Hydraulic cylinder; 12. Connecting block; 13. Rotating shaft; 14. Side connecting plate; 15. Servo motor; 16. Extrusion wheel. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example 1

[0023] Please see Figures 1 to 5 This utility model provides a technical solution: a pre-compression mechanism, including a compression roller 5, the compression roller 5 being connected to a limiting block 3 via a rotating shaft, an upper connecting plate 4 being provided on the side of the limiting block 3, the upper connecting plate 4 being connected to a fixed plate 9 through a limiting hole 8 opened on an upper moving plate 7, and a spring 10 being provided on the fixed plate 9; a paper packaging box biodegradable film coating device, including the aforementioned pre-compression mechanism.

[0024] In practical use, the biodegradable film is squeezed by the extrusion roller 5 to cover the surface of the paper packaging box. When encountering uneven parts of the paper packaging box, the extrusion roller 5, the limiting block 3, and the upper connecting plate 4 can move up and down, so that when the extrusion roller 5 squeezes the film, the film always adheres to the surface of the paper packaging box, avoiding uneven pressure distribution and thus affecting the film coating quality. Example 2

[0025] Based on Embodiment 1, in order to avoid uneven pressure distribution and thus affect the film coating quality, a servo motor 15 is provided. The drive shaft of the servo motor 15 is fixedly connected to the rotating shaft of the extrusion roller 5. The extrusion roller 5 is rotatably connected to the limiting block 3 through the rotating shaft. The limiting block 3 can slide along the limiting groove 2. The servo motor 15 fixedly installed on the side connecting plate 14 can drive the extrusion roller 5 to rotate, and drive the paper packaging box with the pre-pressed film to continue to move.

[0026] Several limiting rods 6 are fixedly connected to the upper surface of the upper connecting plate 4. The limiting rods 6 are cylindrical in shape and pass through the limiting holes 8 opened on the upper moving plate 7 to be fixedly connected to the fixed plate 9. The fixed plate 9 is circular in shape. When the extrusion roller 5 presses the film onto the paper packaging box and encounters uneven sections on the paper packaging box, the extrusion roller 5, the limiting block 3, the upper connecting plate 4 and the limiting rods 6 can move up and down along the limiting holes 8 opened on the upper moving plate 7 to make adaptive adjustments.

[0027] One end of the spring 10 is fixedly connected to the fixed plate 9, and the other end is fixedly connected to the upper moving plate 7. A side connecting plate 14 is fixedly connected to the side of the upper moving plate 7, and a servo motor 15 is fixedly installed on the side of the side connecting plate 14. The spring 10 is always in a taut state and always provides a downward pulling force to the fixed plate 9. In conjunction with the spring 10 pulling the fixed plate 9, it provides a downward pushing force to the limiting rod 6. When the extrusion roller 5 encounters the concave part of the cardboard, the spring 10 pulls the fixed plate 9 and the limiting rod 6 to move downward along the limiting hole 8, so that the upper connecting plate 4, the limiting block 3, and the extrusion roller 5 extrude the film downward. This can make the film and the paper packaging box come into close contact, avoid insufficient pressure on the film at the concave part of the paper packaging box, and thus avoid affecting the quality of the lamination and improve the effect of the device. Example 3

[0028] Based on Embodiment 2, in order to improve the use effect of the device, a film-coating device body 1 is provided. A hydraulic cylinder 11 is fixedly installed on the inner side of the film-coating device body 1. The telescopic end of the hydraulic cylinder 11 is fixedly connected to the upper surface of the upper moving plate 7. When the hydraulic cylinder 11 fixedly installed on the inner side of the film-coating device body 1 is activated, it pushes the upper moving plate 7 to move downward. The limiting rod 6 pulls the fixed plate 9, so that the limiting rod 6 moves downward along the limiting hole 8 opened on the upper moving plate 7. The limiting block 3 has a "convex" plate-shaped structure. The limiting block 3 is stuck in the limiting groove 2 opened on the inner side of the film-coating device body 1. The limiting groove 2 has a "convex" groove-shaped structure, so that the upper connecting plate 4 and the limiting block 3 move downward. The squeezing roller 5 connected to the limiting block 3 by the rotating shaft contacts the film and squeezes the film to cover the surface of the paper packaging box.

[0029] The limiting block 3 is fixedly connected to the upper connecting plate 4. The upper connecting plate 4 has a square plate structure. A connecting block 12 is fixedly connected to the side of the upper connecting plate 4. The connecting block 12 is rotatably connected to the rotating shaft 13. The rotating shaft 13 has extrusion rollers 16 installed at both ends. The connecting block 12 has an "L" shaped plate structure. After the extrusion roller 5 completes the pre-pressing of the film on the surface of the paper packaging box, the paper packaging box continues to move. The extrusion rollers 16 installed on the rotating shaft 13 rotatably connected to the connecting block 12 extrude pressure on the edge of the paper packaging box, which can make the film edge tightly cover the paper packaging box, thus improving the effect of the device.

[0030] Working principle: In actual use, the spring 10 pulls the fixed plate 9, causing the limiting rod 6 to move downward along the limiting hole 8, which in turn moves the upper connecting plate 4, the limiting block 3, and the squeezing roller 5 downward. This allows the squeezing roller 5 to continuously squeeze the film, ensuring close contact between the film and the paper packaging box. This prevents insufficient pressure on the film in recessed areas of the paper packaging box, which would affect the quality of the lamination and improve the device's effectiveness. The device can be made to adapt to uneven areas of the paper packaging box, allowing it to pre-press the film effectively. Furthermore, the squeezing roller 16 mounted on the rotating shaft 13 squeezes the edges of the paper packaging box, preventing the film from lifting at the edges and improving the device's performance.

[0031] 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 pre-compression mechanism, comprising a compression roller (5), characterized in that: The extrusion roller (5) is connected to the limiting block (3) via a rotating shaft. The limiting block (3) has an upper connecting plate (4) on its side. The upper connecting plate (4) passes through the limiting hole (8) on the upper moving plate (7) and is connected to the fixed plate (9). The fixed plate (9) has a spring (10).

2. The pre-compression mechanism according to claim 1, characterized in that: The limiting block (3) has a "convex" plate-shaped structure. The limiting block (3) is stuck in the limiting groove (2) opened on the inner side of the main body (1) of the film covering device. The limiting groove (2) has a "convex" groove-shaped structure.

3. The pre-compression mechanism according to claim 1, characterized in that: The limiting block (3) is fixedly connected to the upper connecting plate (4). The upper connecting plate (4) has a square plate structure. A connecting block (12) is fixedly connected to the side of the upper connecting plate (4). The connecting block (12) is rotatably connected to the rotating shaft (13). Extrusion wheels (16) are installed at both ends of the rotating shaft (13).

4. A pre-compression mechanism according to claim 1, characterized in that: The upper connecting plate (4) has several limiting rods (6) fixedly connected to its upper surface. The limiting rods (6) are cylindrical in shape and pass through the limiting holes (8) opened on the upper moving plate (7) to be fixedly connected to the fixing plate (9). The fixing plate (9) is circular in shape.

5. A pre-compression mechanism according to claim 1, characterized in that: One end of the spring (10) is fixedly connected to the fixed plate (9) and the other end is fixedly connected to the upper moving plate (7). A side connecting plate (14) is fixedly connected to the side of the upper moving plate (7), and a servo motor (15) is fixedly installed on the side of the side connecting plate (14).

6. A pre-compression mechanism according to claim 2, characterized in that: A hydraulic cylinder (11) is fixedly installed on the inner side of the main body (1) of the film covering device, and the telescopic end of the hydraulic cylinder (11) is fixedly connected to the upper surface of the upper moving plate (7).

7. A pre-compression mechanism according to claim 5, characterized in that: The drive shaft of the servo motor (15) is fixedly connected to the rotating shaft of the extrusion roller (5). The extrusion roller (5) is rotatably connected to the limiting block (3) through the rotating shaft. The limiting block (3) can slide along the limiting groove (2).

8. A biodegradable film coating device for paper packaging boxes, characterized in that: Includes the pre-compression mechanism described in any one of claims 1-7 above.

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