Automatic cleaning equipment for printing plate of printing machine

Abstract

The application discloses a kind of automatic cleaning equipment of printing press printing board, including sequentially arranged: pre-cleaning mechanism, by mechanical arm and print the board and realize double-sided cleaning by turning over;Double-sided wiping mechanism, including two groups of upper and lower oppositely arranged movable frame, print the board and pass between two groups of movable frame;Printed surface dust removal mechanism, including the dust removal film that can be automatically wound, the adhering side of the dust removal film always contacts the printed surface of print;The pre-cleaning mechanism, double-sided wiping mechanism and printed surface dust removal mechanism are all conveyed by conveying belt, the pre-cleaning mechanism includes cleaning tank, the inside of the cleaning tank is provided with two oppositely arranged inclined surfaces, a plurality of vacuum suction cups are arranged on each inclined surface;The automatic cleaning equipment of printing press printing board when using not only can double-sided cleaning wipe, but also can further adhere to the dust removal of printed surface, improve the overall cleaning efficiency and the printing quality of printed surface, suitable for use widely.

Description

Technical Field

[0001] This invention relates to the field of printing press technology, and in particular to an automatic cleaning device for printing press printing plates. Background Technology

[0002] Printing plates are the core substrate for ink transfer and image reproduction. Depending on the printing process, mainstream printing plates include four types: offset printing plates, flexographic printing plates, gravure printing plates, and screen printing plates. Different materials of printing plates are suitable for different printing scenarios and have differentiated functional characteristics.

[0003] Offset printing plates are mostly made of aluminum base with photosensitive or thermal coating. They achieve image transfer by relying on the principle of water-ink separation, with high dot reproduction accuracy, and are suitable for book and magazine printing and conventional packaging printing. During production, storage and transportation, dust and processing residues are easily attached to the surface of various printing plates. At the same time, protective coatings are usually applied to the plates to prevent oxidation and scratches. However, such impurities and protective layers can directly damage the ink adhesion characteristics of the plate surface. Therefore, printing plates must undergo a cleaning process before being put into printing operations.

[0004] Traditional automatic cleaning equipment can only clean one side. For printing plates that require double-sided cleaning, manual flipping and transfer are required, which is cumbersome and cannot achieve full automation. In addition, fine dust and fiber debris are still easily left on the surface of the printing plates after the initial cleaning. Most existing equipment lacks a subsequent targeted dust removal process, which will directly lead to printing defects such as white spots and smearing during the printing process, reducing the product yield.

[0005] Therefore, there is an urgent need for a cleaning device that can clean and wipe both sides, remove dust from the printed surface, improve cleaning efficiency, and ensure printing quality. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned problems by providing an automatic cleaning device for printing press printing plates that can perform double-sided cleaning and wiping, dust removal and adhesion on the printed surface, improve cleaning efficiency and ensure printing quality.

[0007] To achieve the above objectives, the technical solution of the present invention is: an automatic cleaning device for printing plates of a printing press, comprising, in sequence: The pre-cleaning mechanism uses a robotic arm to flip the printed circuit board over to achieve double-sided cleaning. The double-sided wiping mechanism includes two sets of movable frames arranged vertically opposite each other, and the printing plate passes between the two sets of movable frames; A dust removal mechanism for the printing surface includes an automatically retractable dust removal film, wherein the adhesive side of the dust removal film is always in contact with the printing surface of the printing plate. The pre-cleaning mechanism, double-sided wiping mechanism, and printing surface dust removal mechanism are all transported together by conveyor belts.

[0008] Preferably, the pre-cleaning mechanism includes a cleaning box with two opposing inclined surfaces inside, the two inclined surfaces being V-shaped. Each inclined surface is provided with multiple vacuum suction cups. The outside of the cleaning box is provided with air extraction holes communicating with the vacuum suction cups. During cleaning, the printing plate is attached to one of the inclined surfaces. The bottom of the cleaning box has a circular cavity along its length. An adjusting shaft is provided in the circular cavity. The adjusting shaft is rotatably connected to a baffle. The outer wall of the adjusting shaft has a limiting groove along its length. The width of the limiting groove is consistent with the thickness of the printing plate. When the adjusting shaft is flipped, the printing plate is flipped onto the other inclined surface.

[0009] Preferably, a water distributor is provided on the upper part of both slopes, the surface of the water distributor is provided with water distribution holes, and the inner side of the water distributor is provided with an extended cleaning groove; the printing plate is pre-cleaned by a cleaning disc, the cleaning disc includes an internal drive box, the bottom surface of the cleaning disc is provided with multiple mounting grooves, a motor is provided in the mounting groove, the output shaft end of the motor is provided with a turntable for cleaning the printing plate, and the surface of the cleaning disc is connected to the robotic arm through a connecting rod.

[0010] Preferably, the outer end of each movable frame is provided with a groove, and the two movable frames arranged vertically are provided with hinge frames at both ends. The ends of the hinge frames are hinged in the grooves. A pivot is provided between the two hinge frames on the same side. A vertical rod is vertically connected to the pivot, and the top of the vertical rod is fixedly connected to the inner top wall of the outer box.

[0011] Preferably, the movable frame is provided with a limiting groove on the opposite side, and an extension plate is provided between the two limiting grooves. The extension plate is always slidably connected in the limiting groove, and the surface of the extension plate is provided with a connecting block for connecting the outer box. The surfaces of the two movable frames above are provided with cylinders, and the cylinders are fixed to the inner top wall of the outer box. After the cylinders are run, the corresponding two movable frames are misaligned and translated.

[0012] Preferably, the movable frame is provided with a plurality of protrusions in an array, and a rotatable cleaning roller is provided below the protrusions. A cleaning felt is provided below the cleaning roller, and the cleaning felt is arranged in a Z-shape.

[0013] Preferably, transition rollers are provided on both sides of the protrusion, the cleaning felt is set through the transition rollers, one end of the movable frame is provided with a felt-releasing roller, and the other end is provided with a felt-receiving roller. The felt-releasing roller, the felt-receiving roller and the transition roller are all rotatably connected to the extension plate, and the rotating plate is integrally set with the movable frame.

[0014] Preferably, the movable frame is provided with a connecting pipe along its own length, and the protrusion is provided with a connecting branch pipe connected to the connecting pipe; the outer casing is provided with a cleaning pipe connected to the connecting pipe, and the cleaning pipe is connected to an external cleaning solution.

[0015] Preferably, the dust removal mechanism for the printing surface includes a frame mounted on a conveyor belt frame. A vibrating motor is installed on the inner top wall of the frame. The bottom end of the vibrating motor is connected to a connecting plate. A pressure plate is provided below the connecting plate. A telescopic rod is provided between the pressure plate and the connecting plate. A spring is provided around the telescopic rod. A film feeding roller and a limiting roller are provided on one side of the vibrating motor, and a film taking roller and a limiting roller are provided on the other side. The dust removal film extends from the film feeding roller, passes through the limiting roller, and connects to the film taking roller via the bottom surface of the pressure plate.

[0016] Preferably, the pressing plate has upward-curved edges on both sides, and the dust removal film is adhered to the printing surface of the printing plate through the pressing plate.

[0017] The automatic cleaning equipment for printing plates disclosed in this invention has the following advantages compared with the prior art: 1. By sequentially setting a pre-cleaning mechanism, a double-sided wiping mechanism, and a printing surface dust removal mechanism, the double-sided pre-cleaning, wiping, and final dust removal steps of the printing plate can be automatically completed. No manual flipping is required throughout the process, and the entire plate can be thoroughly cleaned in one go, effectively improving the cleaning efficiency of the printing plate and reducing manual labor intensity. 2. The upper and lower opposing movable plates can simultaneously contact both sides of the printing plate. A cylinder pushes the upper movable frame to shift and offset, allowing the cleaning roller to completely cover the surface of the printing plate. Combined with an automatically replaceable cleaning felt, it maintains the ability to clean and wipe the surface of the printing plate at all times, preventing residual stains from repeatedly contaminating the plate surface and ensuring the uniformity and effectiveness of the wiping and cleaning. 3. Finally, the dust removal film is pressed onto the printing surface of the printing plate by a vibrating pressure plate. The dust removal film can pick up the small impurities and fibers remaining on the printing surface. The take-up roller gradually rolls up the dust removal film to continuously refresh the adhesive surface, ensuring that each position can be cleaned by the clean dust removal film, further improving the cleanliness of the printing surface of the printing plate and meeting the accuracy requirements of subsequent printing operations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an automatic cleaning device for printing plates of a printing press according to the present invention.

[0019] Figure 2 This is a schematic diagram of the pre-cleaning mechanism in an automatic cleaning device for printing plates of a printing press according to the present invention. Figure 1 .

[0020] Figure 3 This is a schematic diagram of the pre-cleaning mechanism in an automatic cleaning device for printing plates of a printing press according to the present invention. Figure 2 .

[0021] Figure 4 For the present invention Figure 3 A schematic diagram of the structure at point B.

[0022] Figure 5 This is a schematic diagram of the internal structure of the cleaning disc in this invention.

[0023] Figure 6 This is a schematic diagram of the internal structure of the double-sided wiping mechanism in an automatic cleaning device for printing plates of a printing press according to the present invention.

[0024] Figure 7 For the present invention Figure 1 A magnified structural diagram of point A in the middle.

[0025] Figure 8 For the present invention Figure 6 A magnified structural diagram at point C.

[0026] Figure 9 This is a schematic diagram of the reciprocating double-sided wiping of two sets of movable frames in this invention.

[0027] Figure 10 This is a schematic diagram of the movable frame in an automatic cleaning device for printing plates of a printing press according to the present invention. Figure 1 .

[0028] Figure 11 This is a schematic diagram of the movable frame in an automatic cleaning device for printing plates of a printing press according to the present invention. Figure 2 .

[0029] Figure 12 A schematic diagram of the movable frame in an automatic cleaning device for printing plates of a printing press according to the present invention. Figure 3 .

[0030] Figure 13 For invention Figure 12 A magnified structural diagram at point D.

[0031] Figure 14 This is a schematic diagram of the dust removal mechanism for the printing surface in an automatic cleaning device for printing plates of a printing press according to the present invention.

[0032] In the diagram: 1. Pre-cleaning mechanism; 11. Cleaning tank; 12. Baffle; 13. Vacuum suction cup; 14. Air extraction port; 15. Water distributor; 16. Cleaning tank; 17. Water injection port; 18. Cleaning tray; 181. Drive box; 182. Mounting slot; 183. Motor; 184. Turntable; 19. Robotic arm; 101. Circular cavity; 102. Adjusting shaft; 103. Limiting slot; 2. Conveyor belt; 3. Double-sided wiping mechanism; 31. Movable frame; 3111. Cylinder; 311. Groove; 312. Limiting slot; 313. Extension plate; 31 4. Connecting pipe; 3141. Connecting branch pipe; 315. Felt release roller; 316. Felt take-up roller; 317. Protrusion; 318. Transition shaft roller; 319. Cleaning roller; 310. Cleaning felt; 32. Hinge frame; 33. Rotating shaft; 34. Upright pole; 35. Limiting plate; 36. Connecting block; 37. Outer housing; 38. Connecting groove; 39. Cleaning pipe; 4. Printing surface dust removal mechanism; 41. Vibration motor; 42. Connecting plate; 43. Telescopic rod; 44. Pressing plate; 45. Film release roller; 46. Film take-up roller; 47. Limiting roller; 48. Dust removal membrane. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0034] Please refer to Figure 1-14 An automatic cleaning device for printing plates of a printing press, comprising: The pre-cleaning mechanism 1 uses a robotic arm 19 to flip the printing plate over to achieve double-sided cleaning. During this process, the printing plate is always tilted, which ensures that the water flow can wash away the stains in time and avoid secondary adhesion. The double-sided wiping mechanism 3 includes two sets of movable frames 31 arranged vertically opposite each other. The printing plate passes between the two sets of movable frames 31. When passing through, the wiping surface of the movable frame 31 contacts the upper and lower surfaces of the printing plate and wipes it to remove residual materials and cleaning residue, so as to avoid leaving marks. The dust removal mechanism 4 for the printing surface includes a dust removal film 48 that can be automatically rolled up. The adhesive side of the dust removal film 48 is always in contact with the printing surface of the printing plate. During this process, the dust removal film 48 is continuously rolled up and in contact with the printing surface, thereby preventing tiny dust particles from sticking to the printing surface. After the dust particles are removed, the printing surface is then subjected to a protective film application in the subsequent process. In this embodiment, the pre-cleaning mechanism 1, the double-sided wiping mechanism 3, and the printing surface dust removal mechanism 4 are all conveyed by the conveyor belt 2. After the printing plate is pre-cleaned on both sides by the pre-cleaning mechanism 1, it is lifted by a robotic arm and an external suction cup to the conveyor belt 2 and sequentially fed into the double-sided wiping mechanism 3 and the printing surface dust removal mechanism 4 for subsequent processing. The pre-cleaning mechanism 1 realizes automatic flipping and pre-cleaning of the printing plate, which can effectively remove large particles of impurities and residual ink attached to the surface. Then, the double-sided wiping mechanism 3 uses an automatically renewable cleaning felt to wipe the top and bottom sides of the printing plate in a staggered manner to further remove stubborn stains and water stains. Finally, the printing surface is treated with a dust removal film that can be automatically rolled up to remove dust, which effectively avoids the impact of residual impurities on the surface of the printing plate on the subsequent printing effect. The entire cleaning process has a high degree of automation, stable cleaning effect, and can adapt to the cleaning operation of printing plates of different thicknesses, meeting the cleaning needs of large-scale printing production.

[0035] Please refer to this again. Figure 2-5 The pre-cleaning mechanism 1 includes a cleaning tank 11. The cleaning tank 11 has two opposing inclined surfaces, forming a V-shape. Each inclined surface is equipped with multiple vacuum suction cups 13. The exterior of the cleaning tank 1 has extraction holes 14 communicating with the vacuum suction cups 13. During vacuuming, the vacuum suction cups firmly adhere the printing plate to the inclined surfaces, facilitating stable cleaning of the printing plate by the cleaning disc. During cleaning, the printing plate adheres to one of the inclined surfaces. The bottom of the cleaning tank 11 has a circular cavity 101 along its length, and the circular cavity 101 contains a self-driven adjustment mechanism. The adjusting shaft 102 is rotatably connected to the baffle 12. The outer wall of the adjusting shaft 102 is provided with a limiting groove 103 along the length direction. The width of the limiting groove 103 is consistent with the thickness of the printing plate. After cleaning one side, the vacuum suction cup on that side stops vacuuming, the adjusting shaft 102 drives the baffle 12 to flip, and the lower end of the printing plate is inserted into the limiting groove 103. As the adjusting shaft rotates, the printing plate is flipped to another slope. The vacuum suction cup on the other slope is vacuumed again and fixed, so that the other side can be cleaned, realizing automatic flipping pre-cleaning without manual intervention.

[0036] Each of the two inclined surfaces is equipped with a water distributor 15. The surface of the water distributor 15 has multiple evenly distributed water distribution holes. The inner side of the water distributor 15 has a downwardly extending cleaning trough 16. The cleaning water discharged from the water distributor can flow downward along the cleaning trough and rinse the inclined surface of the printing plate in time, thus removing the dirt from the surface of the plate. The printing plate is pre-cleaned by a cleaning disc 18. The cleaning disc 18 includes an internal drive box 181. The bottom surface of the cleaning disc 18 has multiple mounting slots 182. A motor 183 is fixedly installed in the mounting slots 182. The output shaft end of the motor 183 is fixedly equipped with a turntable for cleaning the printing plate. The surface of the turntable is equipped with flexible cleaning bristles. The surface of the cleaning disc 18 is connected to a robotic arm 19 through a connecting rod. The robotic arm drives the cleaning disc to move along the inclined surface of the printing plate to complete the brushing operation of the entire surface. Multiple turntables work simultaneously to improve brushing efficiency and cleaning coverage.

[0037] In this way, the pre-cleaning mechanism 1 can automatically complete the entire process of single-sided adsorption and fixation, brushing, flipping and fixing and brushing of the printed board. The V-shaped slope design allows the cleaning wastewater to flow directly into the bottom of the cleaning tank along the surface of the board, without accumulating on the surface of the board and causing secondary adhesion of stains, thus ensuring the cleanliness of the pre-cleaning.

[0038] Please refer to this again. Figure 6-13 Each movable frame 31 has a groove 311 at its outer end. Two movable frames, arranged vertically, have hinge frames 32 at both ends. The ends of the hinge frames 32 are hinged within the grooves 311. A pivot 33 is located between the two hinge frames on the same side. A vertical rod 34 is vertically connected to the pivot 33. The top of the vertical rod 34 is fixedly connected to the inner top wall of the outer casing 37, allowing the movable frame 31 to move horizontally within the outer casing. Limiting grooves 312 are formed on opposite sides of the movable frame 31. An extension plate 313 is located between the two limiting grooves 312 and is always slidably connected within the limiting grooves 312. A connecting block 36 for connecting to the outer casing is provided on the surface of the extension plate 313. Cylinders 3111 are connected to the surfaces of the two upper movable frames 31. The cylinders 3111 are fixed to the inner top wall of the outer casing 37. When the cylinders operate, they can drive the corresponding two movable frames to move in a staggered manner, cooperating with the cleaning felt to complete the reciprocating wiping action.

[0039] like Figure 9 As shown, during use, the printing plate is fed into the space between the upper and lower movable frames via conveyor belt 2. The upper and lower cleaning felts are simultaneously attached to the upper and lower surfaces of the printing plate. The cylinder drives the two upper movable frames to continuously move back and forth in a staggered manner, causing the cleaning felt to rub against the surface of the printing plate, wiping away the stubborn stains and water stains remaining after pre-cleaning. The cleaning felt is always kept taut, adaptable to printing plates of different thicknesses, and the wiping effect is not affected by changes in plate thickness.

[0040] Furthermore, the movable frame 3 is arrayed with multiple protrusions 317, and a rotatable cleaning roller 319 is correspondingly provided below the protrusions 317. A cleaning felt 310 is provided below the cleaning roller 319, and the cleaning felt 310 is arranged in a Z-shape. The bottom of the protrusions 317 is pressed down and adhered to the surface of the printing plate by the cleaning roller 319. The Z-shape arrangement allows the cleaning felt 310 to have sufficient room to move, which can adapt to the slight thickness fluctuations of the printing plate and always maintain a close and wiping state.

[0041] The protrusion 317 has transition rollers 318 on both sides, and the cleaning felt 310 is set through the transition rollers 318. One end of the movable frame 31 is provided with a felt-releasing roller 315, and the other end is provided with a felt-retracting roller 316. The felt-releasing roller 315, the felt-retracting roller 316, and the transition rollers 318 are all rotatably connected to the extension plate 313. The felt-retracting roller 316 can be driven by an external motor to rotate at a constant speed, continuously winding up the used cleaning felt 310 and bringing out the unused clean cleaning felt on the felt-releasing roller 310, ensuring that a clean section is always in contact with the printing plate during wiping, avoiding cross-contamination of stains. With this setting, each wiping operation ensures that a clean cleaning felt section is in contact with the printing plate, avoiding secondary contamination of the clean printing plate by old cleaning felt that has been contaminated with stains, maintaining a stable wiping cleaning effect, eliminating the need for frequent manual replacement of cleaning felt, and reducing manual maintenance costs.

[0042] Furthermore, the movable frame is provided with a connecting pipe 314 along its own length direction, and the protrusion 317 is provided with a connecting branch pipe 3141 connected to the connecting pipe; the outer casing 37 is provided with a cleaning pipe 39 connected to the connecting pipe on the outside, and the cleaning pipe is connected to an external cleaning liquid. The cleaning liquid can be delivered to the cleaning roller through the connecting pipe 314 and the connecting branch pipe 3141. Since the cleaning roller 319 is in contact with the cleaning felt 310, it can wet the cleaning felt 310, continuously supplying clean cleaning liquid during the wiping process, helping to dissolve stubborn stains, and further improving the wiping effect.

[0043] In this embodiment, the cleaning solution is preferably a volatile solvent, such as ethanol or isopropanol. These solvents can quickly dissolve the cured ink remaining on the surface of the printing plate, and can evaporate quickly after wiping, leaving no water stains or solvent traces on the surface of the printing plate, thus avoiding stains from affecting subsequent printing operations.

[0044] As a preferred option, the cleaning felt 310 is preferably made of a blend of polyester fiber and polyamide fiber. This material not only has good fiber toughness and is not prone to shedding lint during wiping, but also has good adsorption properties, which can quickly absorb and dissolve stains and cleaning residues. It is not likely to cause scratches on the surface of the printing plate and can maintain stable wiping performance for a long time, which is suitable for long-term automated operation and reduces the frequency of replacement.

[0045] Based on this, in this embodiment, the felt-releasing roller 315 and the felt-receiving roller 316 are detachable. When all the cleaning felt on the felt-releasing roller is used up, the felt-receiving roller and the felt-releasing roller can be directly disassembled and replaced as a whole. The replacement operation is simple and quick, and can be completed with only a short downtime, without causing long delays to large-scale continuous production.

[0046] like Figure 14 As shown, the printing surface dust removal mechanism 4 includes a frame mounted on the conveyor belt 2 frame. A vibration motor 41 is installed on the inner top wall of the frame. The output end of the vibration motor 41 is connected to a connecting plate 42. The bottom of the connecting plate 42 is connected to the pressure plate 44 through a telescopic rod 43. A support spring is sleeved on the outside of the telescopic rod 43, so that the pressure plate 44 can adapt to slight height changes and always press the dust removal film 48 against the printing surface of the printing plate. Limiting rollers 47 are rotatably installed on both sides of the pressure plate 44. Inside the frame, a film feeding roller 45 and a film taking roller 45 are rotatably mounted at both ends. The dust removal film 48 passes sequentially through the film feeding roller 45, one side limiting roller 47, the bottom of the pressure plate 44, and the other side limiting roller 47 before being wound onto the film taking roller 46. The film taking roller 46 is driven by an external drive motor to wind up at a uniform speed, ensuring that there is always unused clean dust removal film in contact with the printing surface at the bottom of the pressure plate, continuously completing the dust removal operation and preventing secondary contamination of the printing surface by the old film that has been contaminated with dust. When the vibration motor is working, it can drive the pressure plate and the dust removal film to generate slight vibrations, which allows the dust removal film to better adsorb the tiny floating dust in the gaps on the surface of the printing plate, further improving the dust removal cleanliness. Finally, after completing the entire automated cleaning process of the printing plate, it is output by the conveyor belt to enter the next process.

[0047] The pressure plate 44 has upward-curved edges on both sides. The dust removal film 48 is adhered to the printing surface of the printing plate through the pressure plate 44. The curled edges effectively protect the dust removal film from external pulling, keeping it intact and covering the printing surface of the printing panel. During use, with the vibration of the vibrating motor, the pressure plate 44 can make the dust removal film 48 continuously contact the printing surface of the printing plate at a high frequency, thereby removing residual dust from the surface. After removal, the take-up roller drives the dust removal film to rewind, taking away the film segment with dust. The next clean film segment automatically moves to the bottom of the pressure plate, waiting for the dust removal operation of the next printing plate. The whole process is completed automatically without manual replacement of the dust removal film, effectively ensuring the cleanliness of the printing surface and avoiding residual fine dust from affecting the subsequent printing quality.

[0048] In this embodiment, the action logic of each mechanism can be uniformly programmed and controlled by an external PLC. The pre-cleaning time, wiping speed, and dust removal film winding speed can be adjusted according to the specifications of the printing board to adapt to the cleaning needs of different production rhythms. The overall structure of the equipment is reasonably designed, the connection between each process is smooth, the degree of automation is high, and the manual intervention is minimal. The surface of the cleaned printing board is clean and free of impurities. Compared with traditional manual cleaning and single-process cleaning equipment, the cleaning effect is more stable and the cleaning efficiency is significantly improved, which can meet the actual use needs of large-scale board cleaning in printing plants.

[0049] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An automatic cleaning device for printing plates of a printing press, characterized in that, Including the following settings in sequence: The pre-cleaning mechanism uses a robotic arm to flip the printed circuit board over to achieve double-sided cleaning. The double-sided wiping mechanism includes two sets of movable frames arranged vertically opposite each other, and the printing plate passes between the two sets of movable frames; A dust removal mechanism for the printing surface includes an automatically retractable dust removal film, wherein the adhesive side of the dust removal film is always in contact with the printing surface of the printing plate. The pre-cleaning mechanism, double-sided wiping mechanism, and printing surface dust removal mechanism are all transported together by conveyor belts.

2. The automatic cleaning equipment for printing plates of a printing press according to claim 1, characterized in that, The pre-cleaning mechanism includes a cleaning tank with two opposing inclined surfaces inside, forming a V-shape. Each inclined surface is equipped with multiple vacuum suction cups. The exterior of the cleaning tank has air extraction holes communicating with the vacuum suction cups. During cleaning, the printed material is adhered to one of the inclined surfaces. The bottom of the cleaning tank has a circular cavity along its length, and an adjusting shaft is installed inside the circular cavity. The adjusting shaft is rotatably connected to a baffle. The outer wall of the adjusting shaft has a limiting groove along its length, and the width of the limiting groove is consistent with the thickness of the printed material. When the adjusting shaft is flipped, the printed material is flipped onto the other inclined surface.

3. The automatic cleaning equipment for printing plates of a printing press according to claim 2, characterized in that, Both of the two inclined surfaces are equipped with water distributors. The surface of the water distributors is provided with water distribution holes, and the inner side of the water distributors is provided with protruding cleaning grooves. The printing plate is pre-cleaned by a cleaning disc. The cleaning disc includes an internal drive box. The bottom surface of the cleaning disc is provided with multiple mounting grooves. A motor is installed in the mounting groove. The output shaft end of the motor is provided with a turntable for cleaning the printing plate. The surface of the cleaning disc is connected to the robotic arm through a connecting rod.

4. The automatic cleaning equipment for printing plates of a printing press according to claim 1, characterized in that, The outer ends of the movable frame are provided with grooves. The two movable frames arranged vertically are provided with hinge frames at both ends. The ends of the hinge frames are hinged in the grooves. A pivot is provided between the two hinge frames on the same side. A vertical rod is vertically connected to the pivot. The top of the vertical rod is fixedly connected to the inner top wall of the outer box.

5. The automatic cleaning equipment for printing plates of a printing press according to claim 4, characterized in that, The movable frame is provided with limiting grooves on opposite sides, and an extension plate is provided between the two limiting grooves. The extension plate is always slidably connected in the limiting groove. The surface of the extension plate is provided with a connecting block for connecting the outer box. The surfaces of the two movable frames above are provided with cylinders. The cylinders are fixed to the inner top wall of the outer box. After the cylinders are run, the corresponding two movable frames are misaligned and translated.

6. The automatic cleaning equipment for printing plates of a printing press according to claim 1, 4 or 5, characterized in that, The movable frame is provided with an array of protrusions, and a rotatable cleaning roller is provided below the protrusions. A cleaning felt is provided below the cleaning roller, and the cleaning felt is arranged in a Z-shape.

7. The automatic cleaning equipment for printing plates of a printing press according to claim 6, characterized in that, Both sides of the protrusion are provided with transition rollers, the cleaning felt is set through the transition rollers, one end of the movable frame is provided with a felt-releasing roller, and the other end is provided with a felt-receiving roller. The felt-releasing roller, the felt-receiving roller and the transition roller are all rotatably connected to the extension plate, and the rotating plate is integrally set with the movable frame.

8. The automatic cleaning equipment for printing plates of a printing press according to claim 7, characterized in that, The movable frame has a connecting pipe along its own length, and the protrusion has a connecting branch pipe connected to the connecting pipe; the outer casing has a cleaning pipe connected to the connecting pipe, and the cleaning pipe is connected to an external cleaning solution.

9. The automatic cleaning equipment for printing plates of a printing press according to claim 1, characterized in that, The dust removal mechanism for the printing surface includes a frame mounted on a conveyor belt, a vibrating motor installed on the inner top wall of the frame, the bottom end of the vibrating motor connected to a connecting plate, a pressure plate provided below the connecting plate, a telescopic rod provided between the pressure plate and the connecting plate, and springs provided around the telescopic rod; a film feeding roller and a limiting roller are provided on one side of the vibrating motor, and a film taking roller and a limiting roller are provided on the other side, the dust removal film extends from the film feeding roller, passes through the limiting roller and the bottom surface of the pressure plate and connects to the film taking roller.

10. The automatic cleaning equipment for printing plates of a printing press according to claim 9, characterized in that, The pressure plate has upward-curved edges on both sides, and the dust removal membrane is adhered to the printing surface of the printing plate through the pressure plate.

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