Printing press suction paper feeding table air volume adjustment device

Abstract

This utility model discloses an airflow adjustment device for a printing press suction paper feeding table, specifically relating to the field of printing press technology. It includes a side frame with a conveyor belt and multiple suction holes. A suction pump is located on one side of the side frame, and a suction pipe is connected to one side of the suction pump. One end of the suction pipe is connected to multiple connecting pipes, and the top of the connecting pipes is connected to multiple dispersing pipes. A sealing assembly and an adjustment mechanism are located on one side of the side frame. This utility model, by setting up the sealing assembly and adjustment mechanism, can provide a double-layer seal at the connection between the connecting pipe and the connecting cylinder, thereby reducing air leakage during suction and ensuring the paper remains flat during feeding. Simultaneously, the apertures inside the first and second adjustment plates can block suction energy, allowing for adjustment of the suction airflow required for different types of paper during printing, thus adapting to diverse printing needs.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, and more specifically, to a printing press suction paper feeding table air volume adjustment device. Background Technology

[0002] The suction feeder, also known as a paper feeder, paper platform, or positioning platform, is a key component of sheet-fed printing presses (such as offset printing presses) between the feeder (paper feeding device) and the printing unit. It can accurately position and transport the paper from the feeder in a very short time, ensuring that the paper enters the printing unit in a completely accurate position, flat state, and stable speed.

[0003] Existing printers use exhaust fans to directly draw air from the suction box. The entire conveyor belt is attached to the platform, and the suction force holds the conveyor belt tightly to the platform surface, resulting in high friction when the conveyor belt moves. In addition, there are fine powder particles on the paper surface, which are sucked into the suction equipment, affecting its operation.

[0004] A search revealed that Chinese patent CN223239261U discloses a suction structure for the paper feeding platform of a digital printing machine. Through the interaction of structures such as a dispersing suction component, rotating rods, suction holes, connecting pipes, concentrating pipes, dispersing air holes, suction holes, and cleaning rollers, the suction force can be evenly distributed on the surface of the conveyor belt. With the help of multiple rotating rods, the friction of the conveyor belt can be reduced, and powder on the surface of the paper can be cleaned, resulting in a good suction and conveying effect.

[0005] In actual use, the suction structure of the paper feeding platform of the aforementioned digital printing press is often sealed with a simple sealing ring at the connection between the suction pump and the connecting pipe during the suction process. This can easily lead to gas leakage due to insufficient sealing, which in turn affects the suction pressure in various areas of the paper feeding platform and thus affects the printing effect of the paper. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a printing press suction paper feeding table air volume adjustment device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A printing press suction paper feeding table air volume adjustment device includes a side frame, a conveyor belt is provided on the side frame, multiple suction holes are opened on the conveyor belt, a suction pump is provided on one side of the side frame, a suction pipe is connected to one side of the suction pump, multiple connecting pipes are connected to one end of the suction pipe, multiple dispersing pipes are connected to the top of the connecting pipes, and a sealing component and an adjustment mechanism are provided on one side of the side frame. The sealing assembly includes a connecting pipe that communicates with the output end of the suction pump. A fixing ring is fixedly connected to the outside of the connecting pipe, and connecting rods are fixedly connected to both sides of the fixing ring. A first rotating cylinder is rotatably connected to the outside of the connecting pipe. A second rotating ring is fixedly connected to one end of the first rotating cylinder, and a first sealing ring is fixedly connected to the other end of the first rotating cylinder. A second rotating cylinder is rotatably connected to the outside of the connecting pipe, and a sealing gasket is fixedly connected to one end of the second rotating cylinder. The outside of the second rotating cylinder is threadedly connected to the inside of the second rotating ring. A connecting cylinder is fixedly connected to one side of the suction pipe, and the connecting cylinder is threadedly connected to the outside of the first rotating cylinder. A second sealing ring is fixedly connected to one side of the suction pipe. Two connecting blocks are fixedly connected to one side of the suction pipe, and a first threaded rod is threadedly connected inside the connecting block. The first threaded rod is threadedly connected to the inside of the connecting rod.

[0008] By adopting the above technical solution, a double-layer seal can be provided inside the connecting cylinder, which can reduce suction leakage and maintain stable suction during the printing process.

[0009] As a further description of the above technical solution: the adjustment mechanism includes an exhaust box, inside which a first adjustment plate and a second adjustment plate are slidably connected, and a connecting shell is fixedly connected to one side of the suction pipe. Inside the connecting shell, two second threaded rods are rotatably connected, and the two second threaded rods are respectively threadedly connected to the inside of the first adjustment plate and the second adjustment plate.

[0010] By adopting the above technical solution, the suction force can be blocked in the suction pipe by moving the first and second adjusting plates, thereby adjusting the suction force.

[0011] The technical effects and advantages of this utility model are as follows: 1. By setting a sealing component, a double seal can be provided at the connection between the connecting pipe and the connecting cylinder compared with the existing technology. This can reduce air leakage during the suction process and reduce energy loss of airflow during transmission, so that the paper can remain flat during the paper feeding process. At the same time, the connecting pipe and the suction pipe can be quickly installed and disassembled, so as to simplify the installation process and facilitate regular cleaning of the inside of the connecting pipe and the suction pipe. 2. By setting an adjustment mechanism, compared with the existing technology, the first and second adjustment plates can move inside the suction pipe, and the suction energy can be blocked by the aperture inside the first and second adjustment plates. This allows for the adjustment of the suction air volume required for different types of paper during printing, thereby adapting to diverse printing needs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the inner structure of the conveyor belt of this utility model.

[0014] Figure 3 This is a partial structural diagram of the connecting pipe joint of this utility model.

[0015] Figure 4 This is a partial structural diagram of the second rotating ring connection of this utility model.

[0016] Figure 5 This is a schematic diagram of the internal structure of the suction tube of this utility model.

[0017] Figure 6 This is a partial structural diagram of the connection point of the first adjusting plate of this utility model.

[0018] The attached diagram is labeled as follows: 1. Side frame; 2. Conveyor belt; 3. Suction port; 4. Suction pump; 5. Suction pipe; 6. Connecting pipe; 7. Dispersing pipe; 8. Connecting pipe; 9. Fixing ring; 10. Connecting rod; 11. First rotating drum; 12. Second rotating ring; 13. First sealing ring; 14. Second rotating drum; 15. Sealing air cushion; 16. Second sealing ring; 17. Connecting block; 18. First threaded rod; 19. Connecting cylinder; 20. Exhaust box; 21. First adjusting plate; 22. Second adjusting plate; 23. Second threaded rod; 24. Connecting shell. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The embodiments disclosed in this application are as follows: Figure 1-6 The air volume adjustment device for the suction paper feeding table of the printing press shown includes a side frame 1, a conveyor belt 2 on the side frame 1, multiple suction holes 3 on the conveyor belt 2, a suction pump 4 on one side of the side frame 1, a suction pipe 5 connected to one side of the suction pump 4, multiple connecting pipes 6 connected to one end of the suction pipe 5, multiple dispersing pipes 7 connected to the top end of the connecting pipes 6, and a sealing component and adjustment mechanism on one side of the side frame 1. The sealing assembly includes a connecting pipe 8, which is connected to the output end of the suction pump 4. A fixing ring 9 is fixedly connected to the outside of the connecting pipe 8, and connecting rods 10 are fixedly connected to both sides of the fixing ring 9. A first rotating cylinder 11 is rotatably connected to the outside of the connecting pipe 8. A second rotating ring 12 is fixedly connected to one end of the first rotating cylinder 11, and a first sealing ring 13 is fixedly connected to the other end of the first rotating cylinder 11. A second rotating cylinder 14 is rotatably connected to the outside of the connecting pipe 8, and a sealing gasket 15 is fixedly connected to one end of the second rotating cylinder 14. The outside of the second rotating cylinder 14 is threadedly connected to the inside of the second rotating ring 12. A connecting cylinder 19 is fixedly connected to one side of the suction pipe 5, and the connecting cylinder 19 is threadedly connected to the outside of the first rotating cylinder 11. A second sealing ring 16 is fixedly connected to one side of the suction pipe 5, and two connecting blocks 17 are fixedly connected to one side of the suction pipe 5. The first threaded rod 18 is internally threaded to the block 17. The first threaded rod 18 is internally threaded to the connecting rod 10. By rotating the second rotating ring 12, the second rotating ring 12 is threaded to the connecting cylinder 19. The second rotating ring 12 can drive the first rotating cylinder 11 to move, causing the first rotating cylinder 11 to squeeze the first sealing ring 13 and the second sealing ring 16 together. This provides an initial seal at the connection between the connecting pipe 8 and the suction pipe 5. Then, by rotating the second rotating cylinder 14, the second rotating cylinder 14 can squeeze the sealing air cushion 15 inside the second rotating ring 12, causing the sealing air cushion 15 to extend outward and fill the gap between the second rotating ring 12 and the connecting pipe 8, thus providing a secondary seal. This reduces air leakage during suction, allowing the paper to remain flat during the paper feeding process.

[0021] Reference Figure 5 and 6 As shown, the adjustment mechanism includes an exhaust box 20, inside which a first adjustment plate 21 and a second adjustment plate 22 are slidably connected. A connecting shell 24 is fixedly connected to one side of the suction pipe 5. Inside the connecting shell 24, two second threaded rods 23 are rotatably connected. The two second threaded rods 23 are respectively threadedly connected to the inside of the first adjustment plate 21 and the second adjustment plate 22. By using the second adjustment plate 22 and the first adjustment plate 21 to slide inside the exhaust box 20, the gaps inside the first adjustment plate 21 and the second adjustment plate 22 can coincide with the gaps in the exhaust box 20, thereby blocking the suction energy. This allows for adjustment of the suction air volume required for different types of paper during printing, thus adapting to diverse printing needs.

[0022] Working principle of this utility model: This utility model designs an air volume adjustment device for the suction paper feeding table of a printing press. The specific structure is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, through the cooperation of various structures, suction is generated by the suction pump 4 and connected to multiple connecting pipes 6 through the suction pipe 5, thereby dispersing the suction to multiple connecting pipes 6. The multiple connecting pipes 6 can hold the paper through the suction holes 3 on the conveyor belt 2. When it is necessary to adjust the suction volume, one of the second threaded rods 23 is rotated. The second threaded rod 23 can drive the first adjusting plate 21 to move through the thread, so that the gap between the first adjusting plates 21 and the gap of the suction box 20 can be adjusted, thereby blocking the suction and thus adjusting the suction. Similarly, rotating the other second threaded rod 23 can drive the second adjusting plate 22 to move, which can further adjust the suction. When it is necessary to disassemble and clean the connecting pipe 8, the two second threaded rods 23 are disassembled in sequence, and then the second rotating ring 12 is rotated, so that the second rotating ring 1 2. Separate from the connecting cylinder 19, and then the connecting pipe 8 can be pulled out from the inside of the connecting cylinder 19, thereby completing the disassembly of the connecting pipe 8. When it is necessary to install the connecting pipe 8, first align the connecting pipe 8 with the connecting cylinder 19, and insert the two connecting rods 10 into the connecting block 17. Use the connecting cylinder 19 to connect the connecting block 17 and the connecting rods 10. Then rotate the second rotating ring 12, and use the second rotating ring 12 to drive the first rotating cylinder 11 to move, so that the first rotating cylinder 11 can drive the first sealing ring 13 to squeeze the second sealing ring 16, thereby providing an initial seal inside the connecting cylinder 19. Then rotate the second rotating cylinder 14, and use the threaded connection between the second rotating cylinder 14 and the inner side of the second rotating ring 12, so that the second rotating cylinder 14 can squeeze the sealing air cushion 15 inside the second rotating ring 12, thereby filling the gap between the second rotating ring 12 and the connecting pipe 8 through the sealing air cushion 15, thereby providing a secondary seal, thus ensuring the sealing performance during the suction process.

[0023] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures and will not be described here. In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A printing press suction paper feeding table air volume adjustment device, including a side frame (1), characterized in that: A conveyor belt (2) is provided on the side frame (1), and multiple air suction holes (3) are opened on the conveyor belt (2). A suction pump (4) is provided on one side of the side frame (1), and a suction pipe (5) is connected to one side of the suction pump (4). Multiple connecting pipes (6) are connected to one end of the suction pipe (5), and multiple dispersing pipes (7) are connected to the top of the connecting pipe (6). A sealing component and an adjustment mechanism are provided on one side of the side frame (1). The sealing assembly includes a connecting pipe (8), which is connected to the output end of the suction pump (4). A fixing ring (9) is fixedly connected to the outside of the connecting pipe (8), and a connecting rod (10) is fixedly connected to both sides of the fixing ring (9).

2. The air volume regulating device for the suction paper feeding table of a printing press according to claim 1, characterized in that: The outer side of the connecting pipe (8) is rotatably connected to a first rotating cylinder (11), one end of the first rotating cylinder (11) is fixedly connected to a second rotating ring (12), and the other end of the first rotating cylinder (11) is fixedly connected to a first sealing ring (13).

3. The air volume regulating device for the suction paper feeding table of the printing press according to claim 1, characterized in that: The outer side of the connecting pipe (8) is rotatably connected to a second rotating cylinder (14), and a sealing gasket (15) is fixedly connected to one end of the second rotating cylinder (14). The outer side of the second rotating cylinder (14) is threadedly connected to the inner side of the second rotating ring (12).

4. The air volume regulating device for the suction paper feeding table of a printing press according to claim 1, characterized in that: A connecting cylinder (19) is fixedly connected to one side of the suction pipe (5). The connecting cylinder (19) is threadedly connected to the outer side of the first rotating cylinder (11). A second sealing ring (16) is fixedly connected to one side of the suction pipe (5).

5. The air volume regulating device for the suction paper feeding table of a printing press according to claim 1, characterized in that: Two connecting blocks (17) are fixedly connected to one side of the suction pipe (5). The connecting block (17) has a first threaded rod (18) internally threaded, and the first threaded rod (18) is internally threaded with the connecting rod (10).

6. The air volume regulating device for the suction paper feeding table of a printing press according to claim 1, characterized in that: The adjustment mechanism includes an exhaust box (20), and a first adjustment plate (21) and a second adjustment plate (22) are slidably connected inside the exhaust box (20).

7. The air volume regulating device for the suction paper feeding table of a printing press according to claim 1, characterized in that: The suction pipe (5) is fixedly connected to a connecting shell (24) on one side. The connecting shell (24) has two second threaded rods (23) rotatably connected inside. The two second threaded rods (23) are respectively threadedly connected to the first adjusting plate (21) and the second adjusting plate (22).

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