Paperboard gluing mechanism

Abstract

The utility model discloses a paperboard gluing mechanism, and relates to the field of box pasting machines, the paperboard gluing mechanism comprises two U-shaped frames and a material storage barrel, the material storage barrel is provided with a gluing assembly used for smearing glue on a paper box, and the U-shaped frames are provided with a limiting assembly used for preventing the paper box from tilting and a pressing assembly used for pressing the material storage barrel to make the gluing assembly make contact with the paper box; through cooperative arrangement of the sliding groove, the fixing rod, the first spring and other structures, during use, the first spring downwards presses the sliding block to enable the sliding block to move downwards, the storage barrel is downwards pressed, the gluing assembly installed on the storage barrel abuts against paper boxes with different thicknesses, the paper boxes are glued, and it is avoided as much as possible that when the paper boxes are thin, the paper boxes are glued, and the gluing efficiency is greatly improved. The abutting force between the glue coating wheel and the paper box is reduced, so that friction is reduced, the glue coating wheel can not rotate, and the problem that glue coating is not uniform is solved.

Description

Technical Field

[0001] This application relates to the field of gluing machines, and more particularly to a cardboard gluing mechanism. Background Technology

[0002] In the packaging and printing industry, the application of box gluing machines is the final step in packaging box processing. It involves folding and gluing printed, die-cut cardboard into its final shape. Machine gluing replaces manual gluing, reducing labor costs and increasing efficiency. A box gluing machine consists of a paper feeding section, a pre-folding section, a bottom-gluing section, a forming section, and a pressing section. Box gluing machines are categorized by function, such as straight-gluing gluing machines and bottom-gluing gluing machines. Most box gluing machines do not have bottom-gluing functionality or even pre-folding; better ones do. Of course, most box gluing machines now have pre-folding. To make bottom-gluing boxes, a bottom-gluing gluing machine is necessary. More advanced gluing machines can also produce hexagonal and irregularly shaped boxes, but these require a glue spraying system and other equipment.

[0003] The utility model patent with announcement number CN214646251U proposes a gluing mechanism for a semi-automatic box gluing machine, including a box limiting component, a limiting frame, and a gluing component. The box limiting component includes a connecting plate, and a shock-absorbing spring is fixedly connected to the lower end of the connecting plate by a snap-fit ​​method. The shock-absorbing springs are evenly distributed, and a rotating wheel limiting component is provided at the bottom end of the shock-absorbing spring. The rotating wheel limiting component and the shock-absorbing spring are fixedly connected by a snap-fit ​​method. An extrusion wheel is rotatably connected to the inner side of the rotating wheel limiting component. The extrusion wheels are evenly distributed. Limiting frames are provided at both ends of the box limiting component, and the limiting frames are fixedly connected to the box limiting component. The gluing component is fixedly connected to the side of the limiting frame.

[0004] The aforementioned semi-automatic gluing machine uses a gluing mechanism that connects the cardboard box to the gluing wheel, causing the wheel to rotate. This rotation of the gluing wheel allows the drive groove and trigger rod to make intermittent contact, which in turn causes the sealing assembly to move up and down. This allows the glue in the glue storage tank to drip onto the gluing wheel through a guide pipe, thus applying the glue to the cardboard box. However, when the cardboard box is thin, the contact force between the gluing wheel and the box decreases, reducing friction and potentially causing the gluing wheel to fail to rotate, resulting in uneven glue application. Utility Model Content

[0005] To achieve the above objectives, this application provides a paperboard coating mechanism.

[0006] The paperboard coating mechanism provided in this application adopts the following technical solution:

[0007] A cardboard coating mechanism includes two U-shaped frames and a storage cylinder. The storage cylinder is provided with a coating component for applying glue to a cardboard box. The U-shaped frames are provided with a limiting component for preventing the cardboard box from tilting and a pressing component for pressing down the storage cylinder to bring the coating component into contact with the cardboard box. The pressing component includes two grooves formed on one side of one of the U-shaped frames. A fixing rod is fixedly connected to each groove. A slider is sleeved on the fixing rod. A first spring is fixedly connected to the upper surface of the slider. The end of the first spring away from the slider is fixedly connected to the top wall of the groove. The ends of the slider away from the groove are fixedly connected to the storage cylinder.

[0008] By adopting the above technical solution, during use, two U-shaped frames are installed above the external conveyor belt, allowing the conveyor belt to transport the cardboard boxes to the bottom of the storage cylinder. The limiting component prevents the cardboard boxes from shaking or tilting. Then, the first spring presses down the slider, causing the slider to move downward and press down the storage cylinder. This allows the glue-applying component installed on the storage cylinder to come into contact with cardboard boxes of different thicknesses, applying glue to the cardboard boxes. This minimizes the problem that when the cardboard box is thin, the contact force between the glue-applying wheel and the cardboard box will decrease, reducing friction and potentially causing the glue-applying wheel to fail to rotate, resulting in uneven glue application.

[0009] Preferably, the adhesive application assembly includes two fixed plates respectively fixedly connected to both sides of the bottom end of the storage cylinder, an adhesive application wheel is rotatably connected between the fixed plates, a discharge pipe is fixedly connected to the bottom end of the storage cylinder, and the bottom end of the discharge pipe is located above the adhesive application wheel and is equipped with a solenoid valve.

[0010] By adopting the above technical solution, the glue in the storage cylinder can be sprayed onto the coating wheel by activating the solenoid valve to open the discharge pipe. When the coating wheel comes into contact with the cardboard box, the movement of the cardboard box drives the coating wheel to rotate, so that the coating wheel applies the glue onto the cardboard box.

[0011] Preferably, the limiting component includes sliding grooves formed on the opposite sidewalls of the two U-shaped frames. A bidirectional screw is rotatably connected in one of the sliding grooves, and a limiting rod is fixedly connected in the other sliding groove. Two parallel connecting plates are provided between the two U-shaped frames. The two ends of the connecting plates are slidably disposed in the sliding grooves, one end of the connecting plate is sleeved on the limiting rod, and the other end of the connecting plate is threadedly connected to the bidirectional screw. A U-shaped plate is provided on the lower surface of each connecting plate, and multiple pressure rollers are rotatably connected to the bottom end of each U-shaped plate. Multiple equidistantly distributed second springs are fixedly connected between the connecting plate and the U-shaped plate.

[0012] By adopting the above technical solution, the pressure roller can be made to contact the paper box by pressing down the U-shaped plate with the second spring, preventing the paper box from tilting during transportation. At the same time, by rotating the bidirectional screw, the connecting plate can move relative to or in relation to the sliding groove and the limiting rod, adjusting the distance between the two connecting plates so that the pressure roller can press down paper boxes of different widths.

[0013] Preferably, an electric heating wire is wound around the outer wall of the discharge pipe.

[0014] By adopting the above technical solution, the discharge pipe can be heated by the heating wire to prevent the glue remaining in the discharge pipe from hardening and causing blockage.

[0015] Preferably, the top of the U-shaped frame is fixedly connected to two first guide rods above the slide groove. Each of the first guide rods is fitted with a connecting block, and one end of each connecting block is fixedly connected to the storage cylinder.

[0016] By adopting the above technical solution, the stability of the lifting and lowering of the storage cylinder can be improved through the first guide rod and the connecting block, and the shaking of the storage cylinder can be prevented.

[0017] Preferably, each of the second springs is provided with a second guide rod, one end of which is fixedly connected to the U-shaped plate, and the other end of which passes through the connecting plate and forms a sliding arrangement.

[0018] By adopting the above technical solution, the stability of the second spring can be improved by using the second guide rod, preventing the second spring from bending and causing the connecting plate to swing.

[0019] Preferably, the top ends of both the first guide rod and the second guide rod are fixedly connected to a limiting plate.

[0020] By adopting the above technical solution, the limiting plate can prevent the connecting block from falling off the first guide rod and the second guide rod from detaching from the connecting plate.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. This application utilizes the coordinated arrangement of structures such as a chute, a fixed rod, and a first spring. In use, two U-shaped frames are installed above the external conveyor belt, allowing the conveyor belt to transport the cardboard box to the bottom of the storage cylinder. A limiting component prevents the cardboard box from shaking or tilting. Then, the first spring presses down on the slider, causing it to move downwards and press down the storage cylinder. This allows the gluing component installed on the storage cylinder to come into contact with cardboard boxes of different thicknesses, applying glue to the cardboard box. This minimizes the problem that when the cardboard box is thin, the contact force between the gluing wheel and the cardboard box may decrease, reducing friction and potentially causing the gluing wheel to fail to rotate, resulting in uneven glue application.

[0023] 2. By pressing down the U-shaped plate with the second spring, the pressure roller can contact the paper box to prevent the paper box from tilting during transport. At the same time, by rotating the bidirectional screw, the connecting plate can move relative to or in relation to the sliding groove and the limiting rod, adjusting the distance between the two connecting plates so that the pressure roller can press down paper boxes of different widths. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a cardboard coating mechanism according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram illustrating the structure of the pressure-down component, which is the main feature of this application embodiment.

[0026] Figure 3 This is a schematic diagram illustrating the structure of the adhesive coating component, as shown in the embodiments of this application.

[0027] Figure 4 The embodiments of this application mainly embody Figure 1 A schematic diagram of the enlarged structure of region A in the middle.

[0028] Reference numerals: 1. U-shaped frame; 2. Storage cylinder; 3. Slide groove; 4. Fixed rod; 5. Slider; 6. First spring; 7. Fixed plate; 8. Glue-applying wheel; 9. Discharge pipe; 10. Solenoid valve; 11. Sliding groove; 12. Bidirectional screw; 13. Limiting rod; 14. Connecting plate; 15. U-shaped plate; 16. Lower pressure wheel; 17. Second spring; 18. Heating wire; 19. First guide rod; 20. Connecting block; 21. Second guide rod; 22. Limiting plate. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0030] This application discloses a cardboard coating mechanism.

[0031] Reference Figure 1 and Figure 2 A cardboard coating mechanism includes two U-shaped frames 1 and a storage cylinder 2. The storage cylinder 2 is provided with a coating component for applying glue to the cardboard box. The U-shaped frames 1 are provided with a limiting component for preventing the cardboard box from tilting up and a pressing component for pressing down the storage cylinder 2 to make the coating component contact the cardboard box. The pressing component includes a slide groove 3, a fixing rod 4, a slider 5, and a first spring 6.

[0032] Two chutes 3 are provided on the side wall of one of the U-shaped frames 1 away from the other U-shaped frame 1. The two chutes 3 are vertical and parallel. Two fixing rods 4 are provided and fixedly connected to the chutes 3 respectively. Two sliders 5 are provided and are respectively sleeved on the fixing rods 4 and adapted to the chutes 3. Two first springs 6 are provided and are respectively sleeved on the fixing rods 4. The two ends of the first springs 6 are fixedly connected to the upper surface of the slider 5 and the top wall of the chutes 3 respectively. The ends of the sliders 5 away from the chutes 3 are fixedly connected to the storage cylinder 2.

[0033] Reference Figure 3 The glue application assembly includes two fixed plates 7 respectively fixedly connected to the two sides of the bottom end of the storage cylinder 2. A glue application wheel 8 is rotatably connected between the fixed plates 7. A discharge pipe 9 is fixedly connected to the bottom end of the storage cylinder 2. The bottom end of the discharge pipe 9 is located above the glue application wheel 8 and is equipped with a solenoid valve 10. By activating the solenoid valve 10 to open the discharge pipe 9, the glue in the storage cylinder 2 can be sprayed onto the glue application wheel 8. When the glue application wheel 8 comes into contact with the cardboard box, the movement of the cardboard box drives the glue application wheel 8 to rotate, so that the glue application wheel 8 applies the glue onto the cardboard box.

[0034] Reference Figure 1 and Figure 4 The limiting assembly includes sliding grooves 11 formed on opposite sidewalls of the two U-shaped frames 1. A bidirectional screw 12 is rotatably connected in one sliding groove 11. One end of the bidirectional screw 12 passes through the sidewall of the sliding groove 11 and is fixedly connected to a turntable for rotating the bidirectional screw 12. A limiting rod 13 is fixedly connected in the other sliding groove 11. Two parallel connecting plates 14 are provided between the two U-shaped frames 1. Both ends of the connecting plates 14 are slidably disposed in the sliding grooves 11. One end of the connecting plate 14 is sleeved on the limiting rod 13, and the other end of the connecting plate 14 is threadedly connected to the bidirectional screw 12. Each connecting plate 14 has a U-shaped plate 15 on its lower surface. Each U-shaped plate 15 has multiple pressure rollers 16 rotatably connected to its bottom end. Multiple equally spaced second springs 17 are fixedly connected between the connecting plate 14 and the U-shaped plate 15. By pressing down on the U-shaped plate 15 through the second springs 17, the pressure rollers 16 can come into contact with the paper box, preventing the paper box from tilting during transport. At the same time, by rotating the bidirectional screw 12 through the turntable, the connecting plate 14 moves relative to or in relation to the sliding groove 11 and the limiting rod 13, adjusting the distance between the two connecting plates 14 so that the pressure rollers 16 can press down on paper boxes of different widths.

[0035] Reference Figure 3 The outer wall of the discharge pipe 9 is wrapped with an electric heating wire 18. The electric heating wire 18 can heat the discharge pipe 9 to prevent the glue remaining in the discharge pipe 9 from hardening and causing the discharge pipe 9 to become blocked.

[0036] Reference Figure 2Two first guide rods 19 are fixedly connected to the top of the U-shaped frame 1 above the slide 3. Each first guide rod 19 is fitted with a connecting block 20. One end of each connecting block 20 is fixedly connected to the storage cylinder 2. The stability of the lifting and lowering of the storage cylinder 2 can be improved by the first guide rods 19 and the connecting blocks 20, and the shaking of the storage cylinder 2 can be prevented.

[0037] Reference Figure 1 Each second spring 17 is provided with a second guide rod 21. One end of the second guide rod 21 is fixedly connected to the U-shaped plate 15, and the other end of the second guide rod 21 passes through the connecting plate 14 and forms a sliding arrangement. The second guide rod 21 can improve the stability of the second spring 17 and prevent the second spring 17 from bending, which would cause the connecting plate 14 to swing.

[0038] Reference Figure 1 The top ends of the first guide rod 19 and the second guide rod 21 are fixedly connected to the limiting plate 22. The limiting plate 22 can prevent the connecting block 20 from falling off the first guide rod 19 and the second guide rod 21 from separating from the connecting plate 14.

[0039] The implementation principle of a cardboard coating mechanism according to an embodiment of this application is as follows: In use, the user first installs two U-shaped frames 1 above the external conveyor belt, allowing the conveyor belt to transport the cardboard box to the bottom of the storage cylinder 2. Simultaneously, the user rotates the bidirectional screw 12 via a turntable, causing the connecting plate 14 to move relative to or in conjunction with the sliding groove 11 and the limiting rod 13, adjusting the distance between the two connecting plates 14. The second spring 17 then presses down on the U-shaped plate 15, causing the pressure roller 16 to contact the cardboard box. This allows the pressure roller 16 to press down cardboard boxes of different widths, preventing the cardboard box from shaking or tilting. Then, the first spring... 6. Press down slider 5 to move slider 5 downward, pressing down storage cylinder 2, so that the coating wheel 8 installed at the bottom of storage cylinder 2 comes into contact with cardboard of different thicknesses. At the same time, start solenoid valve 10 to open discharge pipe 9, so that the glue in storage cylinder 2 can be sprayed onto coating wheel 8. When coating wheel 8 comes into contact with cardboard, the movement of cardboard drives coating wheel 8 to rotate, so that coating wheel 8 can apply glue to cardboard. This avoids the problem that when cardboard is thin, the contact force between coating wheel 8 and cardboard will decrease, resulting in reduced friction and the coating wheel 8 may not be able to rotate, resulting in uneven glue application.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cardboard coating mechanism, comprising two U-shaped frames (1) and a storage cylinder (2), wherein the storage cylinder (2) is provided with a coating component for applying glue to a cardboard box, and the U-shaped frames (1) are provided with a limiting component for preventing the cardboard box from tilting and a pressing component for pressing down the storage cylinder (2) to make the coating component contact the cardboard box, characterized in that: The pressing assembly includes two slide grooves (3) opened on one side of one of the U-shaped frames (1). A fixed rod (4) is fixedly connected in each slide groove (3). A slider (5) is sleeved on the fixed rod (4). A first spring (6) is fixedly connected to the upper surface of the slider (5). The end of the first spring (6) away from the slider (5) is fixedly connected to the top wall of the slide groove (3). The end of the slider (5) away from the slide groove (3) is fixedly connected to the storage cylinder (2).

2. The cardboard coating mechanism according to claim 1, characterized in that: The adhesive application assembly includes two fixed plates (7) respectively fixedly connected to the two sides of the bottom end of the storage cylinder (2). An adhesive application wheel (8) is rotatably connected between the fixed plates (7). A discharge pipe (9) is fixedly connected to the bottom end of the storage cylinder (2). The bottom end of the discharge pipe (9) is located above the adhesive application wheel (8) and is equipped with a solenoid valve (10).

3. The cardboard coating mechanism according to claim 2, characterized in that: The limiting component includes sliding grooves (11) formed on opposite sidewalls of the two U-shaped frames (1). A bidirectional screw (12) is rotatably connected in one of the sliding grooves (11), and a limiting rod (13) is fixedly connected in the other sliding groove (11). Two parallel connecting plates (14) are provided between the two U-shaped frames (1). Both ends of the connecting plates (14) are slidably disposed in the sliding grooves (11). One end of the connecting plate (14) is sleeved on the limiting rod (13), and the other end of the connecting plate (14) is threadedly connected to the bidirectional screw (12).

4. The cardboard coating mechanism according to claim 3, characterized in that: The lower surface of the connecting plate (14) is provided with a U-shaped plate (15), and the bottom end of the U-shaped plate (15) is rotatably connected with a plurality of pressure rollers (16). A plurality of second springs (17) are fixedly connected between the connecting plate (14) and the U-shaped plate (15).

5. A cardboard coating mechanism according to claim 4, characterized in that: The outer wall of the discharge pipe (9) is wound with an electric heating wire (18).

6. A cardboard coating mechanism according to claim 5, characterized in that: The top of the U-shaped frame (1) is fixedly connected to two first guide rods (19) above the slide groove (3). Each of the first guide rods (19) is fitted with a connecting block (20), and one end of each connecting block (20) is fixedly connected to the storage cylinder (2).

7. A cardboard coating mechanism according to claim 6, characterized in that: Each of the second springs (17) is provided with a second guide rod (21). One end of the second guide rod (21) is fixedly connected to the U-shaped plate (15), and the other end of the second guide rod (21) passes through the connecting plate (14) and forms a sliding arrangement.

8. A cardboard coating mechanism according to claim 7, characterized in that: The top ends of the first guide rod (19) and the second guide rod (21) are both fixedly connected to a limiting plate (22).

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