A paper product interlayer bonding glue coating device

Abstract

This utility model discloses an interlayer adhesive coating device for paper products, belonging to the field of paper product manufacturing technology. The device, used to coat the surface of paper products with adhesive, includes a conveyor belt, an adhesive application assembly, and a coating assembly. The paper product is placed on the upper side of the conveyor belt for directional conveying. At least one gap exists between the conveyor belts for accommodating the adhesive application assembly and the coating assembly. The adhesive application assembly includes a metering roller and an adhesive application roller arranged sequentially, with a gap between the rollers for the paper product to pass through. The adhesive application roller is coated with adhesive. The coating assembly is placed after the adhesive application assembly and includes at least one horizontally arranged leveling roller, the surface of which abuts against the lower side of the paper product. This device allows for adjustment of the appropriate amount of adhesive, resulting in a more uniform coating of adhesive on the paper product surface and improving the coating effect.

Description

Technical Field

[0001] This utility model belongs to the field of paper product manufacturing technology, and more specifically, relates to a paper product interlayer bonding adhesive coating device. Background Technology

[0002] In the production of multi-layered paper products (such as cardboard, corrugated paper, and specialty paper), the application of interlayer adhesive is a key process step to ensure a strong bond between the layers. Current paper production processes typically involve controlling the gap between the metering roller and the coating roller to adjust the amount of adhesive applied, ensuring even distribution of the adhesive on the paper surface. The amount of adhesive applied to the paper surface significantly impacts subsequent production; insufficient adhesive can lead to delamination, while excessive adhesive may cause penetration or deformation. Existing coating equipment commonly suffers from uneven adhesive distribution on the coating roller, resulting in inconsistent adhesive distribution on the paper surface and poor coating performance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a paper product interlayer adhesive coating device, which can adjust the appropriate amount of adhesive to make the adhesive coating on the surface of the paper product more uniform and improve the coating effect of the adhesive.

[0004] This utility model discloses a paper product interlayer adhesive coating device for coating adhesive on the surface of paper products. It includes a conveyor belt, an adhesive application assembly, and a coating assembly. The paper product is placed on the upper side of the conveyor belt for directional conveying. At least one gap exists between the conveyor belts to accommodate the adhesive application assembly and the coating assembly. The adhesive application assembly includes a metering roller and an adhesive application roller arranged sequentially, with a gap between the adhesive application roller and the metering roller for the paper product to pass through. The surface of the adhesive application roller is covered with adhesive. The coating assembly is placed after the adhesive application assembly and includes at least one horizontally arranged leveling roller, the surface of which abuts against the lower side of the paper product.

[0005] As a further improvement of this utility model, the glue application assembly includes a support frame; the support frame is fixedly disposed on the lower side of the glue application roller, and an arc-shaped glue groove is opened on the upper side of the support frame, and a bonding glue is disposed in the glue groove; at least a portion of the surface of the glue application roller is immersed in the bonding glue surface.

[0006] As a further improvement of this utility model, it also includes a back pressure roller; a support column is vertically fixed on the upper left side of the support frame, the lower end of the support column is fixedly connected to the surface of the support frame, and the upper end of the support column is fixedly connected to the end of the back pressure roller; an arc-shaped surface is opened on the upper surface of the back pressure roller, the top of the arc-shaped surface abuts against the lower side of the paper product, and the top of the arc-shaped surface is on the same horizontal plane as the surface of the conveyor belt.

[0007] As a further improvement of this utility model, both the metering roller and the coating roller are fixedly connected to the output end of an external rotating motor so that they can rotate independently around their respective axes.

[0008] As a further improvement of this utility model, the coating assembly includes several coating units, each coating unit including a mounting rod and a mounting frame. Each coating unit is connected to the output end of a translation motor for horizontal reciprocating movement. One end of the mounting rod is fixedly connected to the mounting frame, and the mounting rod is located on the lower side of the mounting frame. The scraper roller is embedded at both ends of the mounting frame and can rotate around its axis. When in working condition, the scraper roller rolls horizontally relative to the lower side of the paper product.

[0009] As a further improvement of this utility model, the mounting frame includes a frame body and a frame; the frame is symmetrically arranged on both sides of the frame body, and a leveling roller is provided on each side of the frame body; the two ends of the leveling roller are rotatably connected to the frame.

[0010] As a further improvement of this utility model, there are two coating units, which are located on the same horizontal straight line; the coating units are located on the left and right sides of the paper product respectively.

[0011] As a further improvement of this utility model, the conveyor belt includes a feed belt and a discharge belt, with a gap between the feed belt and the discharge belt; the feed belt is located before the adhesive coating assembly, and the discharge belt is located after the coating assembly.

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

[0013] By setting up a coating component, the leveling roller moves in a directional reciprocating motion and comes into contact with the side of the paper product coated with the bonding adhesive. This allows for adjustment of the appropriate amount of adhesive, making the bonding adhesive on the surface of the paper product more uniform and improving the coating effect. By setting up a back pressure roller, which is positioned before the coating component, the contact pressure between the coating roller and the paper product is stabilized, preventing wrinkles from forming on the surface of the paper product. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a partial enlarged view of the back pressure roller of this utility model;

[0016] Figure 3 This is a schematic diagram of the coating component of this utility model;

[0017] Figure 4 This is a schematic diagram of the coating component of this utility model.

[0018] Explanation of the labels in the diagram:

[0019] 1. Conveyor belt, 11. Feeding belt, 12. Discharge belt, 2. Glue coating assembly, 21. Metering roller, 22. Glue coating roller, 23. Glue tank, 24. Support frame, 3. Coating assembly, 31. Mounting rod, 32. Mounting frame, 33. Scraper roller, 4. Back pressure roller, 41. Support column, 5. Paper products. Detailed Implementation

[0020] Specific Implementation Example 1: Please refer to... Figures 1-4 A paper product interlayer adhesive coating apparatus for coating adhesive on the surface of paper product 5, comprising a conveyor belt 1, an adhesive coating assembly 2, a coating assembly 3, and a back pressure roller 4.

[0021] Paper product 5 is disposed on the upper side of conveyor belt 1 for directional conveying. At least one gap exists between conveyor belts 1 for accommodating the gluing assembly 2 and the coating assembly 3. In this embodiment, conveyor belt 1 includes a feed belt 11 and a discharge belt 12, with a gap between them. The feed belt 11 is located before the gluing assembly 2, and the discharge belt 12 is located after the coating assembly 3.

[0022] The gluing assembly 2 includes a metering roller 21 and a gluing roller 22 arranged sequentially. Both the metering roller 21 and the gluing roller 22 are fixedly connected to the output end of an external rotary motor, allowing them to rotate independently around their respective axes. It should be noted that using an external rotary motor to drive the metering roller 21 and the gluing roller 22 is a conventional technique; their specific connections and working principles will not be elaborated here. A gap is provided between the gluing roller 22 and the metering roller 21 for the paper product 5 to pass through. The size of the gap is preset according to the type of adhesive (e.g., starch adhesive, PVA), the basis weight, and the type of the paper product. The surface of the gluing roller 22 is coated with adhesive. The coating assembly 3 is arranged after the gluing assembly 2. The coating assembly 3 includes at least one horizontally arranged leveling roller 33, the surface of which abuts against the lower side of the paper product 5.

[0023] The adhesive application assembly 2 includes a support frame 24. The support frame 24 is fixedly disposed on the lower side of the adhesive application roller 22, and an arc-shaped adhesive groove 23 is formed on the upper side of the support frame 24, in which bonding adhesive is disposed. At least a portion of the surface of the adhesive application roller 22 is immersed in the bonding adhesive surface.

[0024] A support column 41 is vertically fixed on the upper left side of the support frame 24. The lower end of the support column 41 is fixedly connected to the surface of the support frame 24, and the upper end of the support column 41 is fixedly connected to the end of the back pressure roller 4. The upper surface of the back pressure roller 4 has an arc-shaped surface. The top of the arc-shaped surface abuts against the lower side of the paper product 5, and the top of the arc-shaped surface is on the same horizontal plane as the surface of the conveyor belt 1.

[0025] The coating assembly 3 includes several coating units, each comprising a mounting rod 31 and a mounting frame 32. Each coating unit is connected to the output end of a translation motor for horizontal reciprocating movement. One end of the mounting rod 31 is fixedly connected to the mounting frame 32, and the mounting rod 31 is located on the lower side of the mounting frame 32. A leveling roller 33 is embedded at both ends of the mounting frame 32 and can rotate around its axis. In operation, the leveling roller 33 rolls horizontally relative to the lower side of the paper product 5.

[0026] The mounting frame 32 includes a frame body and a frame. The frame is symmetrically arranged on both sides of the frame body, and a leveling roller 33 is provided on each side of the frame body. The two ends of the leveling roller 33 are rotatably connected to the frame.

[0027] Preferably, in this embodiment, such as Figure 1 As shown, there are two coating units, which are located on the same horizontal line. The coating units are located on the left and right sides of the paper product 5, respectively, and the translation motor drives the coating units to move horizontally back and forth.

[0028] Working principle:

[0029] Paper product 5 enters through feed belt 11. One end of paper product 5 enters glue coating assembly 2 through back pressure roller 4. Back pressure roller 4 abuts against paper product 5, stabilizing the contact pressure between glue coating roller 22 and paper product 5, thus preventing wrinkles from forming on the surface of paper product 5. Glue coating roller 22 applies the bonding adhesive in glue tank 23 to paper product. The other end of paper product 5 is conveyed through discharge belt 12. Coating units are located on the left and right sides of paper product 5, respectively. Translation motor drives the coating units to move horizontally back and forth. Scraper roller 33 abuts against the lower side of paper product 5, making the bonding adhesive coated on the surface of paper product more uniform, improving the coating effect of bonding adhesive, and avoiding problems such as delamination or deformation.

Claims

1. A paper product interlayer adhesive coating apparatus for coating adhesive on the surface of a paper product (5), characterized in that: The system includes a conveyor belt (1), a glue application assembly (2), and a coating assembly (3); a paper product (5) is disposed on the upper side of the conveyor belt (1) for directional conveying of the paper product (5); there is at least one gap between the conveyor belts (1) for setting up the glue application assembly (2) and the coating assembly (3); the glue application assembly (2) includes a metering roller (21) and a glue application roller (22) arranged in sequence, and a gap is provided between the glue application roller (22) and the metering roller (21) for the paper product (5) to pass through; the surface of the glue application roller (22) is covered with a bonding adhesive; the coating assembly (3) is disposed after the glue application assembly (2), and the coating assembly (3) includes at least a horizontally arranged flattening roller (33), the surface of which abuts against the lower side of the paper product (5).

2. A paper product interlayer bonding glue coating device according to claim 1, characterized in that: The adhesive application assembly (2) includes a support frame (24); the support frame (24) is fixedly disposed on the lower side of the adhesive application roller (22), and an arc-shaped adhesive groove (23) is opened on the upper side of the support frame (24), and the adhesive groove (23) is provided with bonding adhesive; at least part of the surface of the adhesive application roller (22) is immersed in the bonding adhesive surface.

3. A paper product interlayer bonding glue coating device according to claim 2, characterized in that: It also includes a back pressure roller (4); a support column (41) is vertically fixed on the upper left side of the support frame (24), the lower end of the support column (41) is fixedly connected to the surface of the support frame (24), and the upper end of the support column (41) is fixedly connected to the end of the back pressure roller (4); an arc-shaped surface is opened on the upper surface of the back pressure roller (4), the top of the arc-shaped surface abuts against the lower side of the paper product (5), and the top of the arc-shaped surface is on the same horizontal plane as the surface of the conveyor belt (1).

4. A paper product interlayer bonding glue coating apparatus according to claim 1, characterized in that: Both the metering roller (21) and the glue-applying roller (22) are fixedly connected to the output end of the external rotating motor so that they can rotate independently around their corresponding axes.

5. A paper product interlayer bonding glue coating apparatus according to claim 1, characterized in that: The coating assembly (3) includes several coating units, each of which includes a mounting rod (31) and a mounting frame (32). Each coating unit is connected to the output end of a translation motor for horizontal reciprocating movement. One end of the mounting rod (31) is fixedly connected to the mounting frame (32), and the mounting rod (31) is located on the lower side of the mounting frame (32). The leveling roller (33) is embedded at both ends of the mounting frame (32), and the leveling roller (33) can rotate around its axis. When in working condition, the leveling roller (33) rolls horizontally relative to the lower side of the paper product (5).

6. A paper product interlayer bonding glue coating apparatus according to claim 5, characterized in that: The mounting frame (32) includes a frame body and a frame; the frame is symmetrically arranged on both sides of the frame body, and a leveling roller (33) is provided on each side of the frame body; the two ends of the leveling roller (33) are rotatably connected to the frame.

7. A paper product interlayer bonding glue coating apparatus according to claim 5, characterized in that: There are two coating units, which are located on the same horizontal line; the coating units are located on the left and right sides of the paper product (5).

8. A paper product interlayer bonding glue coating apparatus according to claim 1, characterized in that: The conveyor belt (1) includes a feed belt (11) and a discharge belt (12), with a gap between the feed belt (11) and the discharge belt (12); the feed belt (11) is located before the adhesive coating assembly (2), and the discharge belt (12) is located after the coating assembly (3).

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