Flexible printing roller self-cleaning device

Abstract

The utility model discloses a flexographic printing roller self-cleaning device which comprises an installation frame and a fixing frame, a driving assembly is installed on the top of the installation frame, two supporting blocks are fixedly connected to the top of the fixing frame, a printing roller is fixedly connected between the two supporting blocks, a scraping plate is fixedly connected to the inner wall of the fixing frame, and the scraping plate is fixedly connected to the bottom of the fixing frame. The end of the scraping plate makes contact with the outer wall of the printing roller, and the tops of the two supporting blocks are fixedly connected with a water storage box. Wherein one conveying pump injects water into a water storage box through a hose, the water in the water storage box drops onto a cleaning roller through a plurality of droppers, meanwhile, the situation that the water on a printing roller drops into a printing machine due to the fact that the water drops directly drop onto the printing roller is avoided, a scraping plate can guide water stains on the surface of the printing roller into a fixing frame, and the printing efficiency is improved. According to the design, the printing roller can be cleaned, and the situation that cleaning liquid on the surface of the printing roller drips and pollutes the interior of the printing machine is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of flexographic printing plate roller cleaning, and more specifically to a flexographic printing plate roller self-cleaning device. Background Art

[0002] The printing roller is one of the accessories of the offset printing machine. During the printing process, some residual impurities accumulate on the rubber surface of the rubber roller, so the printing roller needs to be cleaned.

[0003] After searching, it was found that the document with publication number CN220447477U specifically discloses a printing roller with automatic cleaning function. In this document, the device cleans the printing roller body through a brush plate, and at the same time, the cleaning liquid is directly sprayed on the printing roller body through a nozzle. Although the printing roller can be cleaned, the cleaning liquid on the surface of the printing roller will drip and cause pollution to the inside of the printing machine. For this reason, we propose a self-cleaning device for flexographic printing plate roller. Utility Model Content

[0004] The utility model provides a flexographic printing plate roller self-cleaning device, which can clean the printing roller and prevent the cleaning liquid on the surface of the printing roller from dripping and causing pollution to the inside of the printing machine.

[0005] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a self-cleaning device for a flexographic printing plate roller, comprising a mounting frame and a fixed frame, a driving assembly is installed on the top of the mounting frame, two support blocks are fixedly connected to the top of the fixed frame, a printing roller is fixedly connected between the two support blocks, a scraper is fixedly connected to the inner wall of the fixed frame, and the end of the scraper is in contact with the outer wall of the printing roller.

[0006] Preferably, a water storage box is fixedly connected to the top of the two support blocks, and a plurality of droppers are fixedly connected to the bottom of the water storage box, and the plurality of droppers are all located above the cleaning roller.

[0007] Preferably, two delivery pumps are fixedly connected to the top of the mounting frame, and the ends of the two delivery pumps are fixedly connected to hoses, one of the hose ends is fixedly connected to the water storage box, and the other hose end is fixedly connected to the fixing frame.

[0008] Preferably, the driving assembly comprises a fixing frame, an end of the fixing frame is fixedly connected to the mounting frame, a cylinder is fixedly connected to the inner wall of the fixing frame, a slider is slidably connected to the inner wall of the mounting frame, and an output end of the cylinder is fixedly connected to the slider.

[0009] Preferably, two push rods are fixedly connected to the top of the slider, two support plates are fixedly connected to the top of the mounting frame, a rotating shaft is rotatably connected between the two support plates, both ends of the two rotating shafts respectively penetrate the support plates and extend to the outside thereof, both ends of the rotating shafts are respectively sleeved with torsion springs, both ends of the rotating shafts are respectively fixedly connected to limiting sleeves, a connecting arm is fixedly connected to the circumferential outer wall of the rotating shaft, the bottom of the connecting arm is fixedly connected to the water storage box, and a gear rod is fixedly connected to the inner wall of the connecting arm.

[0010] Preferably, one end of the torsion spring is fixedly connected to the limiting sleeve, and the other end of the torsion spring is fixedly connected to the support plate.

[0011] The beneficial effects of the present invention are:

[0012] 1. One of the delivery pumps injects water into the water storage box through a hose. The water in the water storage box drips onto the cleaning roller through multiple droppers to moisten the cleaning roller. When the printing roller rotates, it can generate friction with the outer wall of the cleaning roller, so that the surface of the printing roller can be cleaned, while avoiding water dripping directly onto the printing roller, causing the water on the printing roller to drip into the printing machine. When the printing roller rotates, the scraper can guide the water stains on the surface of the printing roller to the inside of the fixed frame. This design can clean the printing roller and avoid the cleaning liquid on the surface of the printing roller from dripping, which causes pollution to the inside of the printing machine.

[0013] 2. The cylinder drives the slider to move in the opposite direction. At this time, the push rod is separated from the squeezing of the gear lever. At this time, under the action of the torsion spring, the connecting arm drives the rotating shaft to rotate in the opposite direction. The cylinder can realize the separation of the cleaning roller and the scraper from the contact with the printing roller, thereby realizing the automatic cleaning of the printing roller.

[0014] 3. By installing multiple droppers on the water storage box, water can be evenly dripped onto the surface of the cleaning roller, so that the water can quickly and evenly contact the cleaning roller. Another delivery pump pumps out the accumulated water inside the fixed frame through a hose to prevent the accumulated water inside the fixed frame from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the cleaning roller of the utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the connecting arm of the utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of the scraper of the utility model.

[0020] In the figure: 1. mounting frame; 2. printing roller; 3. delivery pump; 4. hose; 5. fixing frame; 6. support block; 7. water storage box; 8. dropper; 9. cleaning roller; 10. scraper; 11. connecting arm; 12. fixing frame; 13. cylinder; 14. slider; 15. push rod; 16. support plate; 17. rotating shaft; 18. torsion spring; 19. limit sleeve; 20. gear lever. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, a flexographic plate roller self-cleaning device includes a mounting frame 1 and a fixed frame 5, a driving assembly is installed on the top of the mounting frame 1, two support blocks 6 are fixedly connected to the top of the fixed frame 5, a printing roller 2 is fixedly connected between the two support blocks 6, a scraper 10 is fixedly connected to the inner wall of the fixed frame 5, and the end of the scraper 10 contacts the outer wall of the printing roller 2, a water storage box 7 is fixedly connected to the top of the two support blocks 6, and a plurality of droppers 8 are fixedly connected to the bottom of the water storage box 7, and the plurality of droppers 8 are all located above the cleaning roller 9, and two delivery pumps 3 are fixedly connected to the top of the mounting frame 1, and the ends of the two delivery pumps 3 are fixedly connected to hoses 4, one end of the hose 4 is fixedly connected to the water storage box 7, and the other end of the hose 4 is fixedly connected to the water storage box 7. 4 ends are fixedly connected to the fixed frame 5; one of the delivery pumps 3 injects water into the water storage box 7 through the hose 4, and the water in the water storage box 7 drips onto the cleaning roller 9 through multiple droppers 8 to wet the cleaning roller 9. When the printing roller 2 rotates, it can generate friction with the outer wall of the cleaning roller 9, so that the surface of the printing roller 2 can be cleaned, and at the same time, it is avoided that water drops directly on the printing roller 2, causing the water on the printing roller 2 to drop into the printing machine. When the printing roller 2 rotates, the scraper 10 can guide the water stains on the surface of the printing roller 2 to the inside of the fixed frame 5. This design can clean the printing roller 2 and avoid the cleaning liquid on the surface of the printing roller 2 from dripping and causing pollution to the inside of the printing machine.

[0023] like Figure 1 , Figure 2 and Figure 3As shown, the driving assembly includes a fixed frame 12, the end of the fixed frame 12 is fixedly connected to the mounting frame 1, the inner wall of the fixed frame 12 is fixedly connected to a cylinder 13, the inner wall of the mounting frame 1 is slidably connected to a slider 14, the output end of the cylinder 13 is fixedly connected to the slider 14, the top of the slider 14 is fixedly connected to two push rods 15, the top of the mounting frame 1 is fixedly connected to two support plates 16, a rotating shaft 17 is rotatably connected between the two support plates 16, the two ends of the two rotating shafts 17 respectively penetrate the support plates 16 and extend to the outside thereof, the two ends of the rotating shaft 17 are respectively sleeved with torsion springs 18, and the two ends of the rotating shaft 17 are respectively fixedly connected to limited position sleeves 19, the outer circumferential wall of the rotating shaft 17 is fixedly connected with a connecting arm 11, the bottom of the connecting arm 11 is fixedly connected to the water storage box 7, the inner wall of the connecting arm 11 is fixedly connected with a shift rod 20, one end of the torsion spring 18 is fixedly connected to the limit sleeve 19, and the other end of the torsion spring 18 is fixedly connected to the support plate 16, and the cylinder 13 drives the slider 14 to move in the reverse direction. At this time, the push rod 15 is separated from the squeezing of the shift rod 20. At this time, under the action of the torsion spring 18, the connecting arm 11 drives the rotating shaft 17 to rotate in the reverse direction, and the cleaning roller 9 and the scraper 10 can be separated from the contact with the printing roller 2 through the cylinder 13, thereby realizing automatic cleaning of the printing roller 2.

[0024] Working principle: The cylinder 13 drives the slider 14 to slide, and the slider 14 drives the lever 15 to move, and the lever 15 pushes the lever 20 on the connecting arm 11 to produce extrusion. At this time, the lever 20 slides upward along the lever 15, and the connecting arm 11 drives the rotating shaft 17 to rotate, so that the connecting arm 11 drives the water storage box 7 to rotate, and the water storage box 7 drives the scraper 10 inside the fixed frame 5 to contact the outer wall of the printing roller 2 through the support block 6, and at the same time, the cleaning roller 9 contacts the outer wall of the printing roller 2;

[0025] One of the delivery pumps 3 injects water into the water storage box 7 through a hose 4, and the water in the water storage box 7 drips onto the cleaning roller 9 through a plurality of droppers 8 to wet the cleaning roller 9. When the printing roller 2 rotates, it can generate friction with the outer wall of the cleaning roller 9, so that the surface of the printing roller 2 can be cleaned, and at the same time, it is avoided that the water drops directly onto the printing roller 2, causing the water on the printing roller 2 to drop into the printing machine;

[0026] When the printing roller 2 rotates, the scraper 10 can guide the water stains on the surface of the printing roller 2 to the inside of the fixed frame 5, and another delivery pump 3 pumps out the accumulated water inside the fixed frame 5 through the hose 4;

[0027] The cylinder 13 drives the slider 14 to move in the reverse direction, and the push rod 15 is now freed from squeezing the gear lever 20 . Under the action of the torsion spring 18 , the connecting arm 11 drives the rotating shaft 17 to rotate in the reverse direction, so that the cleaning roller 9 and the scraper 10 are out of contact with the printing roller 2 .

[0028] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexographic printing plate roller self-cleaning device, comprising a mounting frame (1) and a fixing frame (5), characterized in that: A driving assembly is installed on the top of the mounting frame (1); two support blocks (6) are fixedly connected to the top of the fixed frame (5); a printing roller (2) is fixedly connected between the two support blocks (6); a scraper (10) is fixedly connected to the inner wall of the fixed frame (5); and an end of the scraper (10) contacts the outer wall of the printing roller (2).

2. The flexographic printing plate roller self-cleaning device according to claim 1, characterized in that: The tops of the two support blocks (6) are fixedly connected with a water storage box (7), and the bottom of the water storage box (7) is fixedly connected with a plurality of droppers (8), and the plurality of droppers (8) are all located above the cleaning roller (9).

3. The flexographic printing plate roller self-cleaning device according to claim 2, characterized in that: Two delivery pumps (3) are fixedly connected to the top of the mounting frame (1), and the ends of the two delivery pumps (3) are fixedly connected to hoses (4), one end of the hose (4) is fixedly connected to a water storage box (7), and the other end of the hose (4) is fixedly connected to a fixing frame (5).

4. The flexographic printing plate roller self-cleaning device according to claim 3, characterized in that: The driving assembly comprises a fixed frame (12), an end of the fixed frame (12) is fixedly connected to the mounting frame (1), an inner wall of the fixed frame (12) is fixedly connected to a cylinder (13), an inner wall of the mounting frame (1) is slidably connected to a slider (14), and an output end of the cylinder (13) is fixedly connected to the slider (14).

5. The flexographic printing plate roller self-cleaning device according to claim 4, characterized in that: Two push rods (15) are fixedly connected to the top of the slider (14); two support plates (16) are fixedly connected to the top of the mounting frame (1); a rotating shaft (17) is rotatably connected between the two support plates (16); two ends of the two rotating shafts (17) respectively penetrate the support plates (16) and extend to the outside thereof; torsion springs (18) are respectively sleeved on the two ends of the rotating shaft (17); and limiting sleeves (19) are respectively fixedly connected to the two ends of the rotating shaft (17); a connecting arm (11) is fixedly connected to the circumferential outer wall of the rotating shaft (17); the bottom of the connecting arm (11) is fixedly connected to the water storage box (7); and a shift rod (20) is fixedly connected to the inner wall of the connecting arm (11).

6. The flexographic printing plate roller self-cleaning device according to claim 5, characterized in that: One end of the torsion spring (18) is fixedly connected to the limiting sleeve (19), and the other end of the torsion spring (18) is fixedly connected to the support plate (16).

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