Automatic bottom sealing device for environment-friendly paper bag

Abstract

The utility model discloses an automatic bottom sealing device for environment-friendly paper bags, which belongs to the technical field of environment-friendly paper bag production and comprises a workbench, a guide plate and a limiting block are arranged on one side of the inner wall of the workbench, and a connecting plate is arranged at one end of the limiting block. Through the design of a spring, a limiting plate and a pressing roller in the rolling assembly, pressure can be automatically adjusted according to the thickness of a paper bag, it is ensured that the pressing roller makes full contact with the paper bag, glue is evenly distributed and firmly pasted, a transformer and a resistance wire heat the pressing roller, glue curing is accelerated, the sealing firmness is further enhanced, and the product quality is improved; therefore, when the bottom of the environment-friendly paper bag bears certain tension and pressure, the sealing position is not prone to cracking, various packaging requirements can be met, the solidified glue does not have fluidity any more, even if the paper bag is extruded or rubbed in the follow-up storage or transportation process, the adhesion phenomenon does not occur, and storage and use of the paper bag are facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of environmentally friendly paper bag production technology, specifically relating to an automatic bottom sealing device for environmentally friendly paper bags. Background Technology

[0002] With growing environmental awareness, paper bags have gradually become a popular choice in the packaging industry due to their biodegradable and recyclable characteristics. Paper bags can decompose relatively quickly in the natural environment, usually within a few months to a few years, with a relatively small impact on the environment. In order to respond to the call for environmental protection, meet consumer needs, and enhance their corporate image, companies have begun to use paper bags as product packaging.

[0003] In the production process of existing eco-friendly paper bags, the bottom of the paper bag is usually sealed by applying glue. However, after the glue is applied and the cardboard is sealed, the glue is in a flowing state, which can easily cause the glue to leak out of the cardboard. This can cause the paper bags to stick together when stored, making them inconvenient for subsequent use. Therefore, an automatic bottom sealing device for eco-friendly paper bags is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an environmentally friendly paper bag automatic bottom sealing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic sealing device for environmentally friendly paper bags, comprising a workbench, a guide plate and a limiting block on one side of the inner wall of the workbench, a connecting plate at one end of the limiting block, a roller pressing assembly at the bottom of the connecting plate, a glue tank on one side of the workbench, the roller pressing assembly including a placement box, a spring provided at the bottom of the placement box through a groove, a limiting plate at the bottom of the spring, a pressure roller rotatably connected between the two limiting plates, and a transformer provided at the top of the placement box through a groove, the transformer being connected to a resistance wire via an electrical wire.

[0006] In a preferred embodiment, the guide plate is generally arched, one side of the guide plate is an inclined surface, and one end of the guide plate is located below the limiting block.

[0007] In a preferred embodiment, a glue delivery pump is provided on one side of the glue tank, and a glue nozzle is provided at one end of the glue delivery pump, with the bottom of the glue nozzle being flat.

[0008] In a preferred embodiment, a limiting groove is provided between the guide plate and the limiting block, an adhesive application chamber is provided inside the guide plate, a baffle is provided on one side of the adhesive application chamber, one side of the baffle is connected to the guide plate, and the bottom of the guide plate is connected to the top of the worktable.

[0009] In a preferred embodiment, a conveyor belt is provided on the top inner side of the workbench, and the conveyor belt is located below the guide plate.

[0010] In a preferred embodiment, the inside of the pressure roller is connected to the resistance wire, the number of pressure rollers is three, and the bottom of the connecting plate is connected to the top of the placement box.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention, through the design of springs, limiting plates, and pressure rollers in the roller pressing assembly, can automatically adjust the pressure according to the thickness of the paper bag, ensuring full contact between the pressure roller and the paper bag, so that the adhesive is evenly distributed and firmly bonded. The transformer and resistance wire heat the pressure roller, accelerating the curing of the adhesive, further enhancing the sealing strength and improving product quality. As a result, the bottom of the environmentally friendly paper bag is not prone to cracking at the seal when subjected to certain tension and pressure, which can meet various packaging needs. Moreover, the cured adhesive is no longer fluid, so even if the paper bag is squeezed or rubbed during subsequent storage or transportation, it will not stick together, which facilitates the storage and use of the paper bag.

[0013] This invention features a flat glue nozzle design that ensures uniform and precise glue application, preventing excessive or insufficient glue. The guide plate is arched with one side inclined, facilitating the smooth entry of the paper bag into the folding area and guiding the cardboard at the bottom of the bag to fold up. It also works in conjunction with a limiting block to accurately position the cardboard above the bottom of the paper bag, ensuring the accuracy of glue application and cardboard folding. Furthermore, the guide plate separates the cardboard from the paper bag, preventing the folded cardboard from falling onto the paper tape during glue application, which could affect glue application and subsequent sealing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of this utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional side structure of the main body of this utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the guide plate of this utility model;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the limiting block of this utility model;

[0018] Figure 5 This utility model Figure 4 A schematic diagram of the enlarged three-dimensional structure of A.

[0019] In the diagram: 1. Workbench; 2. Guide plate; 3. Limiting block; 4. Connecting plate; 5. Roller assembly; 6. Glue tank; 7. Glue delivery pump; 8. Glue nozzle; 9. Conveyor belt; 10. Baffle; 11. Limiting groove; 12. Glue application chamber; 501. Placement box; 502. Spring; 503. Limiting plate; 504. Pressure roller; 505. Transformer; 506. Resistance wire. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0022] Please see Figure 1-5 This utility model provides an automatic bottom sealing device for environmentally friendly paper bags, including a workbench 1. A guide plate 2 and a limiting block 3 are provided on one side of the inner wall of the workbench 1. A connecting plate 4 is provided at one end of the limiting block 3, and a roller pressing assembly 5 is provided at the bottom of the connecting plate 4. A glue tank 6 is provided on one side of the workbench 1. The roller pressing assembly 5 includes a placement box 501. A spring 502 is provided at the bottom of the placement box 501 through a groove. A limiting plate 503 is provided at the bottom of the spring 502. A pressure roller 504 is rotatably connected between the two limiting plates 503. A variable pressure roller 504 is provided at the top of the placement box 501 through a groove. The pressure unit 505 and transformer 505 are connected to a resistance wire 506 via wires. After the paper bag is coated with glue, the guide plate 2 and the limiting block 3 work together to press the folded part of the paper bag back and connect the paper bag with the glue. The spring 502, the limiting plate 503 and the pressure roller 504 in the roller pressing assembly 5 are designed to automatically adjust the pressure according to the thickness of the paper bag, ensuring that the pressure roller 504 is in full contact with the paper bag, so that the glue is evenly distributed and firmly bonded. The transformer 505 and the resistance wire 506 heat the pressure roller 504 to accelerate the curing of the glue and further enhance the sealing firmness.

[0023] The guide plate 2 is in the shape of an arch bridge, with one side of the guide plate 2 being an inclined surface, and one end of the guide plate 2 being located below the limiting block 3.

[0024] A glue delivery pump 7 is provided on one side of the glue tank 6, and a glue nozzle 8 is provided at one end of the glue delivery pump 7. The bottom of the glue nozzle 8 is flat.

[0025] A limiting groove 11 is provided between the guide plate 2 and the limiting block 3. An adhesive application chamber 12 is provided inside the guide plate 2. A baffle 10 is provided on one side of the adhesive application chamber 12. One side of the baffle 10 is connected to the guide plate 2. The bottom of the guide plate 2 is connected to the top of the workbench 1.

[0026] A conveyor belt 9 is provided on the inner top of the workbench 1, and the conveyor belt 9 is located below the guide plate 2.

[0027] The inside of the pressure roller 504 is connected to the resistance wire 506. There are three pressure rollers 504. The bottom of the connecting plate 4 is connected to the top of the placement box 501. The flat design of the glue nozzle 8 ensures the uniformity and accuracy of glue application. The guide plate 2 is arched and has an inclined surface on one side, which facilitates the smooth entry of the paper bag into the folding area and guides the cardboard at the bottom of the paper bag to fold up. The design of the baffle 10 can prevent external dust from entering the glue application chamber 12, affecting the use of glue and thus affecting the sealing of the bottom of the paper bag.

[0028] The working principle and usage process of this utility model are as follows: First, the paper bag is conveyed to the bottom of the guide plate 2 by the conveyor belt 9. The arched and inclined design of the guide plate 2 can fold up the cardboard at the bottom of the paper bag. Then, the glue in the glue tank 6 is applied to the bottom of the paper bag by the glue nozzle 8 through the glue delivery pump 7. Finally, the cardboard of the folded part of the paper bag is pressed back by the cooperation of one end of the guide plate 2 and the limiting block 3, and the paper bag is connected to the glue. Through the design of the spring 502, the limiting plate 503 and the pressure roller 504 in the roller pressing assembly 5, the pressure can be automatically adjusted according to the thickness of the paper bag to ensure that the pressure roller 504 is in full contact with the paper bag, so that the glue is evenly distributed and firmly bonded. The pressure roller 504 is heated by the transformer 505 and the resistance wire 506 to accelerate the curing of the glue and further enhance the firmness of the seal.

[0029] 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. An automatic bottom sealing device for environmentally friendly paper bags, comprising a workbench (1), characterized in that: The inner wall of the workbench (1) is provided with a guide plate (2) and a limiting block (3). One end of the limiting block (3) is provided with a connecting plate (4). The bottom of the connecting plate (4) is provided with a roller pressing assembly (5). One side of the workbench (1) is provided with a glue tank (6). The roller pressing assembly (5) includes a placement box (501). The bottom of the placement box (501) is provided with a spring (502) through a groove. The bottom of the spring (502) is provided with a limiting plate (503). A pressure roller (504) is rotatably connected between the two limiting plates (503). The top of the placement box (501) is provided with a transformer (505) through a groove. The transformer (505) is connected to a resistance wire (506) through an electric wire.

2. The automatic bottom sealing device for environmentally friendly paper bags according to claim 1, characterized in that: The guide plate (2) is in the shape of an arch bridge. One side of the guide plate (2) is an inclined surface. One end of the guide plate (2) is located below the limiting block (3).

3. The automatic bottom sealing device for environmentally friendly paper bags according to claim 1, characterized in that: The glue tank (6) is provided with a glue delivery pump (7) on one side, and a glue nozzle (8) is provided at one end of the glue delivery pump (7). The bottom of the glue nozzle (8) is flat.

4. The automatic bottom sealing device for environmentally friendly paper bags according to claim 1, characterized in that: A limiting groove (11) is provided between the guide plate (2) and the limiting block (3). An adhesive application chamber (12) is provided inside the guide plate (2). A baffle (10) is provided on one side of the adhesive application chamber (12). One side of the baffle (10) is connected to the guide plate (2). The bottom of the guide plate (2) is connected to the top of the workbench (1).

5. The automatic bottom sealing device for environmentally friendly paper bags according to claim 1, characterized in that: The workbench (1) has a conveyor belt (9) on its top inner side, and the conveyor belt (9) is located below the guide plate (2).

6. The automatic bottom sealing device for environmentally friendly paper bags according to claim 1, characterized in that: The inside of the pressure roller (504) is connected to the resistance wire (506), and there are three pressure rollers (504). The bottom of the connecting plate (4) is connected to the top of the placement box (501).

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