Pneumatic touch pressure structure of sizing roller

Abstract

The utility model relates to the technical field of gas drying discloses a kind of sizing roller pneumatic touch pressure structure, including sizing roller, sizing roller side is provided with paper pressing assembly, the paper pressing assembly includes multiple independently operated paper pressing board, multiple the paper pressing board upper end is connected with pneumatic part, the pneumatic part is used to top pressure the paper pressing board and press to sizing roller. Multiple independently operated paper pressing board is used, and the corrugated board needing touch pressure is touched pressure in subarea, avoid the middle drop caused by using traditional integrated forming paper pressing roller, and then make the situation that middle pressure is big and both sides pressure is small, and pneumatic part is connected on each paper pressing board, each paper pressing board can be independently operated, so that gluing is more uniform, and reduces the rate of defective products.

Description

Technical Field

[0001] This utility model relates to the field of corrugated paper production equipment, specifically, a pneumatic pressing structure for a sizing roller. Background Technology

[0002] Corrugated paper is a widely used packaging material in the packaging industry. In the production process, one step involves applying glue to the corrugated core of single-faced corrugated cardboard before bonding it to the face sheet. Currently, the pressure rollers used for this glue application are typically one-piece, long cylindrical rollers. Due to limitations in the roller's material or manufacturing precision, after prolonged use, the roller body tends to develop a banana-shaped bend, meaning the middle section sags. This results in a thicker glue coating in the center of the corrugated paper, which contacts the sizing roller, while the coating on the sides is thinner or even nonexistent. This leads to delamination and peeling of the finished corrugated cardboard during subsequent bonding. While reducing the gap between the pressure roller and the sizing roller allows the sides of the corrugated paper to contact the sizing roller, it also causes the corrugated core in the center to collapse, reducing the corrugated paper's load-bearing capacity. Utility Model Content

[0003] In order to overcome the defects of the existing technology, this utility model provides a pneumatic contact structure for the sizing roller to solve the problems in the existing technology.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a pneumatic pressing structure for a sizing roller, including a sizing roller, a paper pressing assembly is provided on one side of the sizing roller, the paper pressing assembly includes multiple independently operable pressing plates, and a pneumatic part is connected to the upper end of the multiple pressing plates. The pneumatic part is used to press the pressing plates against the sizing roller.

[0005] In the above-mentioned pneumatic pressing structure of the sizing roller, the pneumatic part includes a back plate disposed above the pressing paperboard, a support plate connected to the lower end of the back plate, a cylinder disposed at the upper end of the support plate, a push rod disposed in the cylinder, the push rod extending from the lower end of the cylinder and abutting against the pressing paperboard.

[0006] In the above-mentioned pneumatic pressing structure of the sizing roller, a hinge seat is fixedly connected to the upper end of the pressing board, a fixed plate is connected to the hinge seat, the hinge seat and the fixed plate are rotatably connected through a hinge shaft, and the fixed plate is detachably connected to the back plate.

[0007] In the above-mentioned pneumatic pressing structure of the sizing roller, a screw is provided on one side of the fixed plate, a nut is provided on the screw, a stop block is provided at the lower end of the nut, a spring is abutted at the lower end of the stop block, and the lower end of the spring abuts against the pressing paper.

[0008] In the above-mentioned pneumatic pressing structure of the sizing roller, two adjacent pressing plates are in contact with each other.

[0009] In the above-mentioned pneumatic pressing structure for a sizing roller, an air pipe is connected above multiple cylinders, and a control valve is connected to one end of the air pipe.

[0010] In the above-mentioned pneumatic pressing structure of the sizing roller, a bending section is provided at one end of the pressing paper near the abutment rod. The bending section bends towards the abutment rod, so that a funnel-shaped opening is formed between the bending section and the sizing roller.

[0011] The beneficial effects of this utility model are that it uses multiple independently operating pressing plates to press the corrugated cardboard in different areas, avoiding the situation caused by the central sagging that occurs when using a traditional one-piece pressing roller, which results in greater pressure in the middle and less pressure on the sides. In addition, each pressing plate is connected to a pneumatic unit, which can control the independent operation of each pressing plate, making the glue application more uniform and reducing the defect rate. Attached Figure Description

[0012] Figure 1 This is a reference diagram showing the usage state of the pneumatic pressure structure of the sizing roller of this utility model.

[0013] Figure 2 This is a schematic diagram of the pneumatic pressing structure of the sizing roller of this utility model.

[0014] Figure 3 This is a schematic diagram of the paper pressing assembly of this utility model.

[0015] In the diagram: 1. Sizing roller; 2. Pressing assembly; 3. Pressing board; 4. Back plate; 5. Support plate; 6. Cylinder; 7. Abutment; 8. Hinge seat; 9. Fixing plate; 10. Hinge shaft; 11. Screw; 12. Nut; 13. Abutment block; 14. Spring; 15. Air pipe; 16. Control valve; 17. Bending section; 18. Corrugated cardboard; 19. First guide shaft; 20. Sizing roller; 21. Second guide shaft. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0017] like Figure 1 As shown, the corrugated cardboard 18 is first conveyed through the first paper guide shaft 19 to the paper pressing assembly 2 and the sizing roller 1. Under the action of the sizing roller 20, the sizing roller 1 evenly applies glue to the corrugated cardboard 18. The glued corrugated cardboard 18 is then conveyed through the second paper guide shaft 21 to the next process.

[0018] Combination Figures 2 to 3The pneumatic pressing structure of the sizing roller shown includes a sizing roller 1, a paper pressing assembly 2 on one side of the sizing roller 1, and a plurality of independently operable pressing plates 3. The upper ends of the plurality of pressing plates 3 are connected to pneumatic units, which are used to press the pressing plates 3 against the sizing roller 1. By using a plurality of independently operable pressing plates 3, the corrugated cardboard 18 areas that need to be pressed are pressed, avoiding the situation of the middle sagging caused by the use of traditional one-piece forming pressing rollers, which results in the middle pressure being high and the pressure on both sides being low. Moreover, each pressing plate 3 is connected to a pneumatic unit, which can control the independent operation of each pressing plate 3, making the glue coating more uniform and reducing the defect rate.

[0019] Preferably, the pneumatic unit in this embodiment includes a back plate 4 disposed above the pressure plate 3, a support plate 5 connected to the lower end of the back plate 4, a cylinder 6 disposed at the upper end of the support plate 5, and a stop rod 7 disposed in the cylinder 6. The stop rod 7 extends from the lower end of the cylinder 6 and abuts against the pressure plate 3. When the cylinder 6 is running, the gas pushes the stop rod 7 to extend from the bottom of the cylinder 6 and abut against the pressure plate 3, causing the pressure plate 3 to press down on the corrugated cardboard 18. Moreover, the gas volume of the cylinder 6 can be adjusted according to the thickness of the corrugated cardboard 18, thereby adjusting the length of the stop rod 7 extending out of the cylinder 6, and thus affecting the pressure of the stop rod 7 pressing against the pressure plate 3.

[0020] It is worth noting that, in this embodiment, the upper end of the pressing plate 3 is fixedly connected to a hinge seat 8, and a fixing plate 9 is connected to the hinge seat 8. The hinge seat 8 and the fixing plate 9 are rotatably connected through a hinge shaft 10, and the fixing plate 9 is detachably connected to the back plate 4. One end of the pressing plate 3 is connected to the fixing plate 9 through the hinge seat 8. In this way, while the abutment 7 presses down on one end of the pressing plate 3, the other end of the pressing plate 3 can move up and down moderately with the hinge shaft 10 as the limiting center. Therefore, when the impact of the abutment 7 on the pressing plate 3 is too great, the range of motion of the pressing plate 3 will not be too large, thus preventing the paperboard from deforming.

[0021] In this embodiment, a screw 11 is provided on one side of the fixing plate 9, and a nut 12 is threaded through the screw 11. A stop block 13 is provided at the lower end of the nut 12, and a spring 14 abuts against the lower end of the stop block 13. The lower end of the spring 14 abuts against the pressure plate 3. When the contact pressure of the stop rod 7 on the pressure plate 3 is too large, the range of motion of the other end of the pressure plate 3 increases accordingly. Since the spring 14 abuts against the pressure plate 3, the spring 14 can buffer the movement of the pressure plate 3. At the same time, by adjusting the height of the nut 12, the tension of the spring 14 can be adjusted to accommodate corrugated cardboard 18 of different thicknesses.

[0022] Preferably, two adjacent pressing plates 3 are in contact with each other; the sides of each pressing plate 3 abut together, which can fully cover the corrugated cardboard 18 that needs to be pressed, so that the corrugated cardboard 18 has more comprehensive contact with the sizing roller 1 and the glue coating is more uniform.

[0023] Specifically, multiple cylinders 6 are connected to air pipes 15, and one end of the air pipes 15 is connected to a control valve 16. The control valve 16 controls the gas to enter the air pipes 15, and then enters the air pump 6 from the air outlet in the air pipes 15 to make the air pump 6 run. The overall design is simple and does not require the use of multiple control components and multiple air pipes, thus reducing costs.

[0024] It is worth noting that, in this embodiment, the end of the pressing board 3 near the abutment 7 is provided with a bending section 17. The bending section 17 bends towards the abutment 7, so that a flared opening is formed between the bending section 17 and the sizing roller 1. The flared opening makes it easier for the corrugated cardboard 18 to enter between the pressing board 3 and the sizing roller 1.

[0025] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A pneumatic pressing structure for a sizing roller, characterized in that: It includes a sizing roller (1), and a paper pressing assembly (2) is provided on one side of the sizing roller (1). The paper pressing assembly (2) includes multiple independently operable pressing plates (3). The upper ends of the multiple pressing plates (3) are connected to a pneumatic unit, which is used to press the pressing plates (3) against the sizing roller (1). The pneumatic unit includes a back plate (4) disposed above the pressing plate (3), a support plate (5) connected to the lower end of the back plate (4), a cylinder (6) disposed at the upper end of the support plate (5), a push rod (7) disposed in the cylinder (6), the push rod (7) extends from the lower end of the cylinder (6) and abuts against the pressing plate (3).

2. The pneumatic pressing structure for a sizing roller according to claim 1, characterized in that: The upper end of the pressure plate (3) is fixedly connected to a hinge seat (8), and a fixing plate (9) is connected to the hinge seat (8). The hinge seat (8) and the fixing plate (9) are rotatably connected through a hinge shaft (10). The fixing plate (9) is detachably connected to the back plate (4).

3. The pneumatic pressing structure for a sizing roller according to claim 2, characterized in that: A screw (11) is provided on one side of the fixing plate (9), a nut (12) is provided on the screw (11), a stop block (13) is provided at the lower end of the nut (12), a spring (14) is abutted at the lower end of the stop block (13), and the lower end of the spring (14) abuts against the pressure plate (3).

4. The pneumatic pressing structure for a sizing roller according to claim 1, characterized in that: The two adjacent pressure plates (3) are in contact with each other.

5. The pneumatic pressing structure for a sizing roller according to claim 4, characterized in that: A gas pipe (15) is connected above the plurality of cylinders (6), and a control valve (16) is connected to one end of the gas pipe (15).

6. The pneumatic pressing structure for a sizing roller according to claim 2, characterized in that: The pressure plate (3) is provided with a bending section (17) at one end near the abutment (7). The bending section (17) bends towards the abutment (7) to form a flared opening between the bending section (17) and the sizing roller (1).

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