A laminating and cutting device for packaging paper boxes

Abstract

This utility model discloses a laminating and cutting device for packaging cartons, including a mounting frame, a mounting horizontal plate, a first electric push rod, a second electric push rod, a cutter, a pressing plate, a sleeve, a guide frame, and a controller. The guide frame has two guide rollers on its inner wall. The mounting horizontal plate has vertical plates on both side walls, with the lower end of each vertical plate fixedly connected to the upper end of the cutter. A sleeve is fitted onto the side wall of the output end of the first electric push rod, and a pressing plate is fixedly connected to the lower end of the sleeve. The first electric push rod is connected to the sleeve via a first connecting mechanism. This utility model features a first connecting mechanism; the vertical position of the guide frame can be adjusted by rotating a threaded rod, thereby adjusting the height of the two guide rollers. When packaging cartons of different heights, the position of the heat-shrink film passing through the guide rollers can be changed accordingly, eliminating the need for the cutter to drop from an excessively high position to cut, shortening the cutter stroke, and improving cutting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of packaging paper box technology, and in particular to a film-coating and cutting device for packaging paper boxes. Background Technology

[0002] In the modern packaging industry, cardboard boxes, as an important carrier for product packaging, are widely used in many industries such as food, pharmaceuticals, and electronics due to their excellent protective properties, processability, and aesthetic appeal. The lamination process of cardboard boxes is a key step in improving their quality. Currently, most assembled packaging boxes are laminated using heat-shrink film. This involves wrapping the packaging box with heat-shrink film and then heating it to shrink it, achieving both protection and aesthetic decoration.

[0003] In the workflow of a laminating machine, the cutting device is an indispensable component. Traditional cutting devices typically have a pressing plate in front of the cutter, driven by an electric push rod, used to press and fix the heat shrink film on the packaging box surface. However, when dealing with packaging boxes with small heights, the traditional pressing plate needs to fall from a high position to the packaging box surface, and then rise back to the initial position after pressing. During this process, the falling and rising heights of the pressing plate are too large, resulting in a prolonged laminating time for a single packaging box, which seriously affects the laminating efficiency of a batch of packaging boxes. This has obvious drawbacks in actual production. To solve the above problems, we have proposed this laminating and cutting device for packaging boxes. Utility Model Content

[0004] The main objective of this invention is to provide a film-coating and cutting device for packaging paper boxes, which can effectively solve the problems in the background art.

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

[0006] A laminating and cutting device for packaging paper boxes includes a mounting frame, a mounting horizontal plate, a first electric push rod, a second electric push rod, a cutter, a pressing plate, a sleeve, a guide frame, and a controller. The guide frame has two guide rollers on its inner wall. The mounting horizontal plate has vertical plates on both sides, with the lower end of each vertical plate fixedly connected to the upper end of the cutter. A sleeve is fitted onto the side wall of the output end of the first electric push rod, and a pressing plate is fixedly connected to the lower end of the sleeve. The first electric push rod is connected to the sleeve via a first connecting mechanism, which includes two first bolts fixedly connected to the side walls of the output end of the first electric push rod, each bolt having a first nut. The sleeve is slidably connected to the output end of the first electric push rod. The mounting horizontal plate is connected to the vertical plates via a second connecting mechanism.

[0007] Preferably, the second connecting mechanism includes a second bolt fixedly connected to the side wall of the mounting plate, and the side wall of the second bolt is provided with a second nut.

[0008] Preferably, a drive frame is fixedly connected to both sides of the mounting frame, and a limiting rod and a threaded rod are respectively provided on the top of the two drive frames, and the threaded rod is threadedly connected to the guide frame.

[0009] Preferably, a plurality of vertical rods are installed at the top of the cutter, and a movable block is installed at the lower end of the vertical rods via a telescopic rod. The lower end of the vertical rods is elastically connected to the upper end of the movable block via a spring.

[0010] Preferably, the first bolt is provided with a first washer, and the second bolt is provided with a second washer.

[0011] Preferably, the lower end of the pressing plate is provided with a plurality of ball bearings, and the plurality of ball bearings are arranged at equal intervals.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This device is equipped with a first connecting mechanism. The vertical position of the guide frame can be adjusted by rotating the threaded rod, thereby adjusting the height of the two guide rollers. When packaging paper boxes of different heights, the position of the heat shrink film passing through the guide rollers can be changed accordingly, so that the cutter does not need to fall from an excessively high position to cut, shortening the cutter stroke and improving cutting efficiency.

[0014] 2. This device is equipped with a second connecting mechanism. Loosening the second nut adjusts the position of the vertical plate on the mounting horizontal plate, thereby changing the initial height of the cutter. Combined with the height adjustment of the pressing plate, the downward stroke of the cutter can be shortened simultaneously, making the cutting action of the heat-shrink film more efficient, the further shrinking action more efficient, and further reducing the overall cutting time.

[0015] 3. This device is equipped with a vertical rod, spring and movable block inside the cutter. When the cutter contacts the heat shrink film, the movable block presses down on the heat shrink film first. When the cutter cuts and leaves, the spring keeps the movable block pressing the heat shrink film. The movable block is released only after the cutter has completely left, which prevents the heat shrink film from sticking to the cutter after cutting and prevents the packaging quality from deteriorating due to film adhesion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a film-coating and cutting device for packaging paper boxes proposed in this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of the structure at point A;

[0018] Figure 3 This is a side view of a film-coating and cutting device for packaging paper boxes proposed in this utility model;

[0019] Figure 4 for Figure 1 A sectional view;

[0020] Figure 5 for Figure 4 Enlarged view of the structure at point B;

[0021] Figure 6 This is another side view of a film-coating and cutting device for packaging paper boxes proposed in this utility model.

[0022] In the diagram: 1 Mounting bracket, 2 Mounting horizontal plate, 3 First electric push rod, 4 Second electric push rod, 5 Cutting tool, 6 Pressing plate, 7 Sleeve, 8 Guide roller, 9 Guide frame, 10 First bolt, 11 First nut, 12 First washer, 13 Second nut, 14 Second bolt, 15 Vertical plate, 16 Second washer, 17 Limiting rod, 18 Controller, 19 Drive frame, 20 Threaded rod, 21 Telescopic rod, 22 Vertical rod, 23 Spring, 24 Movable block, 25 Ball bearing. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1-6 As shown, a film-coating and cutting device for packaging paper boxes includes a mounting frame 1, a mounting horizontal plate 2, a first electric push rod 3, a second electric push rod 4, a cutter 5, a pressing plate 6, a sleeve 7, a guide frame 9, and a controller 18. The controller 18 is used to coordinate the timing of the actions of the first electric push rod 3 and the second electric push rod 4. The guide frame 9 is slidably connected to the mounting frame 1, and the controller 18 is fixedly connected to the mounting frame 1. Two guide rollers 8 (rotatably connected) are provided on the inner wall of the guide frame 9. Vertical plates 15 (slidably connected) are provided on both sides of the mounting horizontal plate 2. The lower end of the vertical plate 15 is fixedly connected to the upper end of the cutter 5. A sleeve 7 is sleeved on the side wall of the output end of the first electric push rod 3, and the lower end of the sleeve 7 is fixedly connected to the pressing plate 6.

[0025] The first electric push rod 3 is connected to the sleeve 7 through the first connecting mechanism. The first connecting mechanism includes two first bolts 10 fixedly connected to the two side walls of the output end of the first electric push rod 3. The first bolts 10 are provided with first nuts 11. The sleeve 7 is slidably connected to the output end of the first electric push rod 3. The mounting plate 2 is connected to the vertical plate 15 through the second connecting mechanism.

[0026] In this utility model, the second connecting mechanism includes a second bolt 14 fixedly connected to the side wall of the mounting plate 2, and a second nut 13 is provided on the side wall of the second bolt 14.

[0027] In this utility model, drive frames 19 are fixedly connected to both sides of the mounting frame 1. The top of the two drive frames 19 are respectively provided with a limiting rod 17 and a threaded rod 20. The threaded rod 20 is threadedly connected to the guide frame 9, and the limiting rod 17 is fixedly connected to the adjacent drive frame 19. The limiting rod 17 restricts the movement direction of the guide frame 9, so that the guide frame 9 can only move vertically when the threaded rod 20 rotates. This allows the positions of the two guide rollers 8 to be adjustable, so that when the packaging machine is packaging a small-height cardboard box, the heat shrink film enters the right side of the mounting frame 1 at a lower position. The cutter 5 does not need to fall from a high position. The cutter 5 only needs to descend near the adjusted guide roller 8 to cut the heat shrink film, thereby improving the cutting efficiency.

[0028] In this invention, multiple vertical rods 22 are installed on the top of the cutter 5. A movable block 24 is installed at the lower end of the vertical rod 22 via a telescopic rod 21. The lower end of the vertical rod 22 is elastically connected to the upper end of the movable block 24 via a spring 23. This allows the cutter 5 to press down on the heat-shrink film when it contacts it. When the cutter 5 cuts and leaves the heat-shrink film, the movable block 24 will remain pressed on the heat-shrink film under the elastic action of the spring 23. Finally, the movable block 24 will leave the heat-shrink film only after the cutter 5 has completely left. This prevents the heat-shrink film from sticking to the cutter 5 after cutting, which would affect the quality of the packaging box. It is worth noting that the corners on both sides of the movable block 24 are rounded to avoid scratching the heat-shrink film.

[0029] In this utility model, a first washer 12 is provided on the first bolt 10, and a second washer 16 is provided on the second bolt 14. The first washer 12 and the second washer 16 can increase the contact area between the nut and the connecting parts, disperse the pressure, and prevent the first nut 11 and the second nut 13 from loosening due to vibration and other factors during long-term operation of the device, thus ensuring the stability and reliability of the connection structure.

[0030] In this invention, the lower end of the pressing plate 6 is provided with a plurality of ball bearings 25. The ball bearings 25 are arranged at equal intervals. The presence of the ball bearings 25 changes the contact between the pressing plate 6 and the heat shrink film from surface contact to point contact, reducing frictional resistance, preventing the heat shrink film from adsorbing at the lower end of the pressing plate 6, ensuring that the pressing plate 6 presses down and rises smoothly, and does not affect the position and state of the heat shrink film.

[0031] In the initial state, the mounting frame 1 is installed inside the packaging machine frame. The heat shrink film passes through the two guide rollers 8 as shown in the figure, wraps around the packaging box, and wraps from the bottom of the packaging box to the right side of the packaging box.

[0032] When in use, after the packaging box is moved to the mounting frame 1, the first electric push rod 3 and the second electric push rod 4 are started in sequence. The output end of the first electric push rod 3 extends the pressing plate 6 to press the heat shrink film on the packaging box, and the output end of the second electric push rod 4 extends to drive the cutter 5 to cut the heat shrink film below.

[0033] For packaging boxes that are taller or smaller, multiple first nuts 11 can be loosened, and the sleeve 7 can be moved up or down on the output end of the first electric push rod 3. Then the first nuts 11 can be tightened, so that the first electric push rod 3 can press the top of the packaging box in a shorter stroke, thus shortening the cutting time.

[0034] For packaging boxes that are taller or smaller, multiple second nuts 13 can be loosened to move the sleeve 7 up or down on the output end of the first electric push rod 3, and then the second nuts 13 can be tightened to shorten the downward stroke of the cutter 5, thereby reducing the upper cutting time.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A film-coating and cutting device for packaging cartons, comprising a mounting frame (1), a mounting cross plate (2), a first electric push rod (3), a second electric push rod (4), a cutting tool (5), a pressing plate (6), a sleeve (7), a guide frame (9), and a controller (18), characterized in that, The inner wall of the guide frame (9) is provided with two guide rollers (8), and the two side walls of the mounting horizontal plate (2) are provided with vertical plates (15). The lower end of the vertical plate (15) is fixedly connected to the upper end of the cutter (5). The side wall of the output end of the first electric push rod (3) is fitted with a sleeve (7). The lower end of the sleeve (7) is fixedly connected with a pressing plate (6). The first electric push rod (3) is connected to the sleeve (7) through a first connecting mechanism. The first connecting mechanism includes two first bolts (10) fixedly connected to the two side walls of the output end of the first electric push rod (3). The first bolts (10) are provided with first nuts (11). The sleeve (7) is slidably connected to the output end of the first electric push rod (3). The mounting horizontal plate (2) is connected to the vertical plate (15) through a second connecting mechanism.

2. The laminating and cutting device for packaging paper boxes according to claim 1, characterized in that, The second connecting mechanism includes a second bolt (14) fixedly connected to the side wall of the mounting plate (2), and the side wall of the second bolt (14) is provided with a second nut (13).

3. The laminating and cutting device for packaging paper boxes according to claim 2, characterized in that, The mounting frame (1) has drive frames (19) fixedly connected to both sides of the mounting frame (1). The top of each of the two drive frames (19) is provided with a limiting rod (17) and a threaded rod (20). The threaded rod (20) is threadedly connected to the guide frame (9).

4. The laminating and cutting device for packaging paper boxes according to claim 3, characterized in that, Multiple vertical rods (22) are installed at the top of the cutter (5). A movable block (24) is installed at the lower end of the vertical rod (22) via a telescopic rod (21). The lower end of the vertical rod (22) is elastically connected to the upper end of the movable block (24) via a spring (23).

5. The laminating and cutting device for packaging paper boxes according to claim 2, characterized in that, The first bolt (10) is provided with a first washer (12), and the second bolt (14) is provided with a second washer (16).

6. The laminating and cutting device for packaging paper boxes according to claim 1, characterized in that, The lower end of the pressing plate (6) is provided with a plurality of ball bearings (25), and the plurality of ball bearings (25) are arranged at equal intervals.

Images