A cleaning device for printing machine screens

Abstract

This utility model discloses a cleaning device for screen printing plates of a printing press, including a collection box, a limiting frame connected to the outer wall of the collection box, a matching screen printing frame inside the limiting frame, and guide grooves on the outer walls of both the screen printing frame and the limiting frame. Movable seats are provided opposite to each other on the outer sides of the screen printing frame, and nozzles for cleaning and rinsing are provided on opposite sides of the two movable seats. This utility model achieves automatic cleaning of the screen printing plate surface by setting up automatically movable seats, drive rollers, and flexible brushes, in conjunction with cleaning agents sprayed from the nozzles. Compared with traditional manual wiping methods, this device can automatically complete the entire process of cleaning, rinsing, and drying, significantly improving cleaning efficiency and reducing labor intensity. It is suitable for large-scale continuous production scenarios. At the same time, the flexible brush makes uniform contact with the plate surface, avoiding wear caused by uneven force during manual operation and effectively extending the service life of the screen printing plate.

Description

Technical Field

[0001] This utility model relates to the field of cleaning device technology, specifically a cleaning device for screen printing plates of a printing press. Background Technology

[0002] Screen printing is a printing technology widely used in electronics, textiles, ceramics, advertising and other fields. It transfers ink or paint to the surface of the substrate through a screen printing plate. The screen printing plate is usually composed of a frame and a screen stretched on it. During the printing process, the ink is transferred to the printing material through the mesh. After printing, ink or paint will remain on the surface of the printing plate. If it is not cleaned in time, it will affect the quality of subsequent printing. Therefore, the printing plate needs to be effectively cleaned.

[0003] Currently, screen printing plate cleaning is mostly done manually. Operators first use a scraper to remove excess coating from the plate, then spray a cleaning agent, and finally wipe both sides of the plate with a soft cloth. While this method can achieve basic cleaning, it has many shortcomings: First, the manual operation is cumbersome and inefficient, making it difficult to meet the needs of mass production; second, it is difficult to control the force during manual wiping, which can easily damage the screen due to uneven force or repeated friction, affecting the lifespan of the printing plate and the printing accuracy.

[0004] Therefore, a cleaning device for screen printing plates of a printing press is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a cleaning device for screen printing plates of a printing press, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cleaning device for screen printing plates of a printing press, comprising a collection box, a limiting frame connected to the outer wall of the collection box, a matching screen printing frame provided inside the limiting frame, guide grooves provided on the outer walls of both the screen printing frame and the limiting frame, movable seats provided opposite to each other on the outer sides of the screen printing frame, nozzles for cleaning and rinsing provided on opposite sides of the two movable seats, self-moving drive rollers connected to one side of each of the two movable seats, connecting members connected to the outer walls of the two drive rollers, covering pads provided on the outer walls of the two connecting members, flexible brushes connected to the outer walls of the two covering pads, and multiple telescopic pressure rods matching the outer walls of the screen printing frame connected to the outer walls of the two movable seats for pressing the screen printing frame against the inside of the limiting frame before cleaning, and hot air pipes connected to the outer walls of the two drive rollers.

[0007] Preferably, both connectors are Velcro, and the outer walls of both drive rollers are connected to the covering pad via corresponding Velcro.

[0008] Preferably, both of the connecting pieces are magnetic absorbing pieces, and the outer walls of the two drive rollers are connected to the covering pads through corresponding magnetic absorbing pieces, which facilitates the disassembly and cleaning of the flexible brush. The interior of the two covering pads is provided with drying holes, which are connected to the interior of the drive rollers and the hot air pipe, for drying treatment after the screen printing frame is cleaned.

[0009] Preferably, the other end of each of the multiple nozzles is connected to a feed pipe, and the other end of a corresponding set of feed pipes passes through the corresponding movable seat and is connected to a control valve for controlling the cleaning agent's decontamination and the pure water's rinsing treatment.

[0010] Preferably, the other ends of the two hot air pipes are connected to a hot air device for generating hot air to dry the surface of the cleaned screen printing plate.

[0011] Preferably, a first screw is rotatably connected inside the collection box, and the interiors of the two movable seats are threadedly connected to the wall of the first screw. One end of the first screw is connected to a first motor, and a distance sensor is connected to the opposite side of each of the two movable seats. Both movable seats are slidably connected inside the collection box.

[0012] Preferably, each of the two movable seats is rotatably connected to a second screw, the walls of the two second screws are threadedly connected to a movable platform, one side of each of the two movable platforms is connected to a connecting seat, the two drive rollers are rotatably connected to the interior of the corresponding connecting seats, the tops of the two drive rollers pass through the corresponding connecting seats and are connected to a third motor, and one end of each of the two second screws passes through the corresponding movable seat and is connected to a second motor.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model achieves automatic cleaning of the screen printing plate surface by setting up an automatically movable seat, drive roller and flexible brush, in conjunction with the cleaning agent sprayed from the nozzle. Compared with the traditional manual wiping method, this device can automatically complete the entire process of cleaning, rinsing and drying, which significantly improves cleaning efficiency, reduces labor intensity and is suitable for large-scale continuous production scenarios. At the same time, the flexible brush makes uniform contact with the plate surface, avoiding the wear of the plate surface caused by uneven force during manual operation, and effectively extending the service life of the screen printing plate.

[0015] 2. In addition, the device is equipped with hot air pipes and drying holes, which can quickly dry the printing plate with hot air after cleaning, avoiding water stains from affecting printing quality. The design of the separate control valve realizes the segmented control of cleaning agent and pure water, improving the cleaning effect and resource utilization. The overall structure is compact and the operation is highly automated. It not only improves the cleaning quality, but also enhances the versatility and practicality of the equipment, and has good prospects for promotion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of the present utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of the covering pad, connector and flexible brush of this utility model.

[0019] In the diagram: 1. Collection box; 2. Limiting frame; 3. Screen printing frame; 4. Guide channel; 5. Drive roller; 6. Covering pad; 7. Connector; 8. Flexible brush; 9. Drying hole; 10. Nozzle; 11. Hot air pipe; 12. Moving seat; 13. First screw; 14. First motor; 15. Second screw; 16. Moving table; 17. Second motor; 18. Connecting seat; 19. Telescopic pressure rod; 20. Feed pipe; 21. Sub-control valve; 22. Hot air device; 23. Distance sensor. Detailed Implementation

[0020] 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.

[0021] Example 1: Please refer to Figures 1-3This utility model provides a technical solution: a cleaning device for screen printing plates of a printing press, including a collection box 1, a limiting frame 2 connected to the outer wall of the collection box 1, a matching screen printing frame 3 provided inside the limiting frame 2, a guide groove 4 provided on the outer wall of both the screen printing frame 3 and the limiting frame 2, movable seats 12 provided opposite to each other on the outer side of the screen printing frame 3, nozzles 10 for cleaning and rinsing provided on opposite sides of the two movable seats 12, a self-moving drive roller 5 connected to one side of each of the two movable seats 12, a connecting piece 7 connected to the outer wall of each of the two drive rollers 5, a covering pad 6 provided on the outer wall of each of the two connecting pieces 7, a flexible brush 8 connected to the outer wall of each of the two covering pads 6, and multiple telescopic pressure rods 19 matched to the outer wall of the screen printing frame 3 connected to the outer wall of each of the two movable seats 12 for pressing the screen printing frame 3 against the limiting frame before cleaning. Inside the 2, the outer walls of the two drive rollers 5 are connected to hot air pipes 11. Before cleaning, excess ink on the plate is scraped off, and the plate and screen printing frame 3 are slid into the interior of the limiting frame 2. The two moving seats 12 move relative to each other, controlling the drive rollers 5 and the connected flexible brushes 8 to move to the plate surface. The third motor controls the corresponding brush to rotate, and the cleaning agent sprayed from the nozzle 10 first softens and cleans the stains. Then, the second screw 15 and the moving table 16 drive the flexible brushes 8 to move along the plate surface to achieve cleaning. At the same time, water is sprayed from the corresponding nozzle 10 to rinse, thus completing the plate cleaning. Finally, hot air is transmitted through the hot air pipe 11 to the drying hole 9 through the inside of the drive roller 5, and finally sprayed out with the gaps of the flexible brushes 8 to dry the plate. The process is automated and highly efficient.

[0022] In this embodiment, both connectors 7 are Velcro, and the outer walls of both drive rollers 5 are connected to the covering pad 6 via corresponding Velcro.

[0023] Both connectors 7 are magnetic plates. The outer walls of the two drive rollers 5 are connected to the covering pads 6 through corresponding magnetic plates, which facilitates the disassembly and cleaning of the flexible brushes 8 and facilitates long-term use. Both covering pads 6 have drying holes 9 inside, which are connected to the inside of the drive rollers 5 and the hot air pipe 11 for drying after the screen printing frame 3 is cleaned.

[0024] In this embodiment, the other end of each of the multiple nozzles 10 is connected to a feed pipe 20. The other end of a corresponding set of feed pipes 20 passes through the corresponding movable seat 12 and is connected to a control valve 21, which is used to control the cleaning agent for decontamination and the rinsing treatment with pure water, resulting in better treatment effect.

[0025] In this embodiment, the other ends of the two hot air pipes 11 are connected to a hot air device 22, which is used to generate hot air to dry the surface of the cleaned screen printing plate. The dried plate can be put into use quickly, saving time.

[0026] In this embodiment, a first screw 13 is rotatably connected inside the collection box 1, and the interiors of the two movable seats 12 are threadedly connected to the rod wall of the first screw 13. One end of the first screw 13 is connected to a first motor 14, and a distance sensor 23 is connected to the opposite side of the two movable seats 12. The two movable seats 12 are slidably connected inside the collection box 1, and the first screw 13 is used to control the relative or opposite movement of the movable seats 12.

[0027] In this embodiment, a second screw 15 is rotatably connected inside each of the two movable seats 12. A movable platform 16 is threadedly connected to the wall of each of the two second screws 15. A connecting seat 18 is connected to one side of each of the two movable platforms 16. Two drive rollers 5 are rotatably connected inside the corresponding connecting seats 18. The tops of the two drive rollers 5 pass through the corresponding connecting seats 18 and are connected to a third motor. One end of each of the two second screws 15 passes through the corresponding movable seat 12 and is connected to a second motor 17. The second screws 15 are used to control the horizontal movement of the movable platform 16 and the flexible brush 8, which facilitates all-round cleaning of the surface. It should be noted that only a portion of the third motor is shown in the accompanying drawings for illustrative purposes.

[0028] The working principle is as follows: First, the screen printing frame 3 to be cleaned is slid into the limiting frame 2, and the screen printing frame 3 is pressed and fixed by the telescopic pressure rod 19 to ensure stable position during the cleaning process. Then, the first motor 14 is started to drive the first screw 13 to rotate, which drives the two moving seats 12 to move relative to each other, so that the flexible brush 8 set on the moving seat 12 is close to the surface of the screen printing frame 3. At this time, the third motor drives the drive roller 5 to rotate, which drives the flexible brush 8 to rotate. At the same time, the nozzle 10 sprays cleaning agent through the feed pipe 20 and the control valve 21 to soften the stains on the plate. The flexible brush 8 moves back and forth along the plate surface under the drive of the second screw 15 and the moving table 16 to achieve comprehensive cleaning. After cleaning, the control valve 21 switches to the clean water mode, and the nozzle 10 sprays out cleaning agent. The screen printing plate is rinsed with pure water to remove residual cleaning agent. The dirt generated during cleaning flows into the collection box 1 through the guide channel 4 for centralized treatment. Finally, the hot air device 22 delivers hot air to the drive roller 5 through the hot air pipe 11 and blows it out evenly through the drying holes 9 on the covering pad 6 to quickly dry the cleaned screen printing plate. Throughout the process, the distance sensor 23 monitors the distance between the moving seat 12 and the screen printing frame 3 in real time to ensure cleaning accuracy and safety. This device realizes integrated operation of cleaning, rinsing and drying through automated control, effectively replacing manual cleaning, improving cleaning efficiency, reducing labor intensity, and avoiding damage to the screen printing plate caused by uneven wiping force. It significantly improves the service life of the screen printing plate and the printing quality.

[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. A cleaning device for screen printing plates of a printing press, comprising a collection box (1), characterized in that: The outer wall of the collection box (1) is connected to a limiting frame (2). A matching screen printing frame (3) is provided inside the limiting frame (2). Both the screen printing frame (3) and the limiting frame (2) have guide grooves (4) on their outer walls. Movable seats (12) are provided opposite to each other on the outer side of the screen printing frame (3). Each of the two movable seats (12) has a nozzle (10) on one side for cleaning and rinsing. Each of the two movable seats (12) has a self-moving drive roller (5) connected to one side. The outer walls of the drive rollers (5) are connected to connectors (7), the outer walls of the two connectors (7) are provided with covering pads (6), the outer walls of the two covering pads (6) are connected to flexible brushes (8), the outer walls of the two moving seats (12) are connected to multiple telescopic pressure rods (19) that match the outer walls of the screen printing frame (3), which are used to press the screen printing frame (3) against the inside of the limiting frame (2) before cleaning, and the outer walls of the two drive rollers (5) are connected to hot air pipes (11).

2. The cleaning device for screen printing plates of a printing press according to claim 1, characterized in that: Both connectors (7) are Velcro, and the outer walls of both drive rollers (5) are connected to the covering pad (6) via corresponding Velcro.

3. The cleaning device for screen printing plates of a printing press according to claim 2, characterized in that: Both of the connectors (7) are magnetic absorbing sheets. The outer walls of the two drive rollers (5) are connected to the covering pads (6) through corresponding magnetic absorbing sheets, which facilitates the disassembly and cleaning of the flexible brush (8). The two covering pads (6) are provided with drying holes (9) inside, and are connected to the inside of the drive rollers (5) and the hot air pipe (11) for drying after the screen printing frame (3) is cleaned.

4. The cleaning device for screen printing plates of a printing press according to claim 1, characterized in that: The other end of each of the multiple nozzles (10) is connected to a feed pipe (20). The other end of a corresponding set of feed pipes (20) passes through the corresponding movable seat (12) and is connected to a control valve (21) for controlling the cleaning agent's decontamination and the rinsing treatment with pure water.

5. The cleaning device for a screen printing plate of a printing press according to claim 1, characterized in that: The other ends of the two hot air pipes (11) are connected to a hot air device (22) for generating hot air to dry the surface of the cleaned screen printing plate.

6. The cleaning device for screen printing plates of a printing press according to claim 1, characterized in that: The inside of the collection box (1) is rotatably connected to a first screw (13), and the inside of the two movable seats (12) is threadedly connected to the rod wall of the first screw (13). One end of the first screw (13) is connected to a first motor (14), and a distance sensor (23) is connected to the opposite side of the two movable seats (12). The two movable seats (12) are slidably connected inside the collection box (1).

7. A cleaning device for a screen printing plate of a printing press according to claim 6, characterized in that: The interior of each of the two movable seats (12) is rotatably connected to a second screw (15), the walls of the two second screws (15) are threadedly connected to a movable platform (16), one side of each of the two movable platforms (16) is connected to a connecting seat (18), the two drive rollers (5) are rotatably connected to the interior of the corresponding connecting seat (18), the tops of the two drive rollers (5) pass through the corresponding connecting seat (18) and are connected to a third motor, and one end of each of the two second screws (15) passes through the corresponding movable seat (12) and is connected to a second motor (17).

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