Film covering device for packaging bag production

Abstract

The utility model discloses a film laminating device for packaging bag production, which comprises a film laminating box, the inner side wall of the film laminating box is provided with a packaging bag guide roller, a film pasting guide roller, a tightening deviation rectifying structure, a film laminating assembly and a wind-up roller, and the packaging bag guide roller and the film pasting guide roller are both rotatably connected to the inner side wall of the film laminating box; and the tightening deviation rectifying structure comprises a connecting frame movably connected to the inner side wall of the film covering box, the side wall of the connecting frame is rotationally connected with a tightening roller, and the top end of the inner side wall of the connecting frame is movably connected with a deviation rectifying roller. In conclusion, the packaging bag film laminating device overcomes the defects in the prior art, is reasonable in design, improves the film laminating quality by tightening and flattening the packaging bag base film or the sticking film and avoiding the deviation of the packaging bag base film or the sticking film in the moving process, and has higher social use value and application prospect.

Description

A laminating device for packaging bag production Technical Field

[0001] This utility model relates to the field of packaging bag production technology, and in particular to a film coating device for packaging bag production. Background Technology

[0002] In the production process of plastic packaging bags, in order to improve the performance of the packaging bags, it is usually necessary to coat the surface of the base film.

[0003] Existing packaging bag laminating devices generally have the following drawbacks: First, existing devices cannot compress the conveyed substrate, leading to looseness during transport and causing wrinkles in the lamination process. Second, misalignment may occur during the movement of the packaging bag base film and the laminating film, resulting in incomplete adhesion. To solve these problems, a packaging bag production laminating device is provided that can taut and flatten the packaging bag base film and the laminating film and automatically correct any deviations. Summary of the Invention

[0004] In order to solve the problems mentioned in the background art, the present invention provides a film coating device for packaging bag production.

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

[0006] A laminating device for producing packaging bags includes a laminating box. The inner side wall of the laminating box is equipped with a packaging bag guide roller, a film-applying guide roller, a tightening and correction structure, a laminating assembly, and a winding roller. The packaging bag guide roller and the film-applying guide roller are both rotatably connected to the inner side wall of the laminating box.

[0007] The tightening and correction structure includes a connecting frame movably connected to the inner wall of the film-coating box, a tightening roller rotatably connected to the side wall of the connecting frame, and a correction roller movably connected to the top of the inner wall of the connecting frame.

[0008] Preferably, the side wall of the film-coating box is provided with a sliding groove, and the outer side wall of the connecting frame is provided with a slider, which is slidably connected in the sliding groove.

[0009] Preferably, a spring is provided inside the groove, and the movable end of the spring is fixedly connected to the slider.

[0010] Preferably, a threaded rod is rotatably connected to the connecting frame near the top, the threaded rod is threadedly connected to a movable block, the bottom end of the movable block is provided with a fixed plate, and the correction roller is rotatably connected to the fixed plate.

[0011] Preferably, the coating assembly includes an upper pressure roller and a lower pressure roller rotatably connected to the side wall of the coating box, with the upper pressure roller positioned above the lower pressure roller.

[0012] Preferably, the side wall of the laminating box is provided with an export roller between the laminating assembly and the winding roller, and the export roller guides the laminated packaging bag.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: after the packaging bag base film or film passes through the tightening roller, it then enters the laminating assembly for lamination. The tightening roller can support the packaging bag base film or film, and under the action of the spring, it can keep the packaging bag base film or film in a taut and flat state. The straightening roller abuts against both sides of the packaging bag base film or film, which can limit the packaging bag base film or film to prevent its position from shifting and causing it to not be fully adhered during lamination, thereby improving the lamination quality.

[0014] In summary, this utility model overcomes the shortcomings of the prior art, has a reasonable design, and improves the coating quality by taut and flattening the base film or film of the packaging bag and preventing it from shifting during movement. It has high social use value and application prospects. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 2 is a schematic diagram of the overall structure of this utility model;

[0018] Figure 3 is a schematic diagram of the tightening and correction structure of this utility model.

[0019] In the diagram: 1. Laminating box, 11. Packaging bag guide roller, 12. Film application guide roller, 2. Tightening and correction structure, 3. Laminating assembly, 31. Upper pressure roller, 32. Lower pressure roller, 5. Outgoing roller, 6. Rewinding roller, 13. Slide groove, 131. Spring, 201. Slider, 21. Connecting frame, 22. Tightening roller, 23. Threaded rod, 231. Moving block, 232. Fixing plate, 233. Correction roller. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Example 1

[0022] Referring to Figures 1-3, a laminating device for packaging bag production includes a laminating box 1. A packaging bag guide roller 11, a film-applying guide roller 12, a tightening and correcting structure 2, a laminating assembly 3, and a winding roller 6 are installed on the inner wall of the laminating box 1. The packaging bag guide roller 11 and the film-applying guide roller 12 are rotatably connected to the inner wall of the laminating box 1, and the film-applying guide roller 12 is located above the packaging bag guide roller 11. The tightening and correcting structure 2 is used to tighten the packaging bag base film and the film-applying film, and to prevent the packaging bag and the film-applying film from shifting, which would result in poor laminating effect.

[0023] The base film and the film for the packaging bag are respectively guided into the laminating box 1 by the packaging bag guide roller 11 and the film guide roller 12. After being tightened and corrected by the tightening and correction structure 2, the film is applied by the laminating assembly 3, and then the film is wound up by the winding roller 6.

[0024] Furthermore, a guide roller 5 is provided on the side wall of the laminating box 1 between the laminating assembly 3 and the winding roller 6. The guide roller 5 guides the laminating packaging bag to facilitate winding.

[0025] The side wall of the film-coating box 1 is provided with a slide groove 13, and a spring 131 is provided inside the slide groove 13.

[0026] The tightening and correction structure 2 includes a slider 201 slidably connected in the slide groove 13. The slider 201 is fixedly connected to the movable end of the spring 131. The inner side wall of the slider 201 is provided with a connecting frame 21. The connecting frame 21 is L-shaped. A tightening roller 22 is rotatably connected to the side wall of the connecting frame 21. After the packaging bag or film passes through the tightening roller 22, it then enters the film coating assembly 3 for film coating. The tightening roller 22 can support the base film or film of the packaging bag. Under the action of the spring 131, the base film or film of the packaging bag can always be kept taut and flat, which facilitates film coating.

[0027] A threaded rod 23 is rotatably connected to the top of the connecting frame 21. The threaded rod 23 is threadedly connected to a moving block 231. A fixed plate 232 is provided at the bottom of the moving block 231. A straightening roller 233 is vertically rotatably connected to the fixed plate 232. The straightening roller 233 abuts against both sides of the packaging bag or film, which can limit the position of the base film or film of the packaging bag to prevent it from shifting and causing it to not be fully adhered when laminating.

[0028] Furthermore, the laminating assembly 3 includes an upper pressure roller 31 and a lower pressure roller 32 rotatably connected to the side wall of the laminating box 1. The upper pressure roller 31 is positioned above the lower pressure roller 32 and is used to laminate the base film and the adhesive film of the packaging bag.

[0029] Working principle: The base film and the film for packaging bags are respectively guided into the laminating box 1 by the packaging bag guide roller 11 and the film guide roller 12;

[0030] After passing through the tightening roller 22, the packaging bag or film then enters the film coating assembly 3 for film coating. The tightening roller 22 can support the base film or film of the packaging bag, and under the action of the spring 131, it can keep the packaging bag or film in a taut and flat state.

[0031] The alignment roller 233 abuts against both sides of the packaging bag base film or film, which can limit the position of the packaging bag base film or film to prevent it from shifting and causing it to not be fully adhered during lamination.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0035] 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 laminating device for producing packaging bags, characterized in that, The system includes a laminating box (1), on which a packaging bag guide roller (11), a film-applying guide roller (12), a tightening and correcting structure (2), a laminating assembly (3), and a winding roller (6) are installed on the inner wall. The packaging bag guide roller (11) and the film-applying guide roller (12) are rotatably connected to the inner wall of the laminating box (1). The tightening and correcting structure (2) includes a connecting frame (21) movably connected to the inner wall of the laminating box (1). A tightening roller (22) is rotatably connected to the side wall of the connecting frame (21), and a correcting roller (233) is movably connected to the top of the inner wall of the connecting frame (21).

2. The laminating device for packaging bag production according to claim 1, characterized in that: The side wall of the film-coating box (1) is provided with a sliding groove (13), and the outer side wall of the connecting frame (21) is provided with a slider (201), which is slidably connected in the sliding groove (13).

3. The laminating device for packaging bag production according to claim 2, characterized in that: The slide (13) is equipped with a spring (131), and the movable end of the spring (131) is fixedly connected to the slider (201).

4. A laminating device for packaging bag production according to claim 1, characterized in that: The connecting frame (21) is rotatably connected to a threaded rod (23) near the top. The threaded rod (23) is threadedly connected to a moving block (231). The bottom end of the moving block (231) is provided with a fixed plate (232). The correction roller (233) is rotatably connected to the fixed plate (232).

5. A laminating device for packaging bag production according to claim 1, characterized in that: The coating assembly (3) includes an upper pressure roller (31) and a lower pressure roller (32) rotatably connected to the side wall of the coating box (1), with the upper pressure roller (31) positioned above the lower pressure roller (32).

6. A laminating device for packaging bag production according to claim 1, characterized in that: The side wall of the film-coating box (1) is provided with an export roller (5) between the film-coating assembly (3) and the winding roller (6), and the export roller (5) guides the film-coated packaging bag.

Images