Automatic plate wiping device of printing machine

Abstract

The utility model discloses an automatic plate wiping device of a printing machine, which comprises a bearing bottom plate, an industrial computer used for controlling the whole device and a multi-shaft mechanical arm used for cleaning are respectively mounted on two sides of the front end of the upper surface of the bearing bottom plate, and a flannelette cleaning turntable is arranged at the end part of the multi-shaft mechanical arm; and a negative pressure air exhaust plate is fixedly installed at the top end of the negative pressure connecting box, a matched porous rubber pad is fixedly connected to the upper surface of the negative pressure air exhaust plate, and a printing plate is arranged on the upper surface of the matched porous rubber pad. According to the utility model, the industrial computer is responsible for coordinating all key components, thereby realizing full-process automation; the high-definition camera scans the surface of the printing plate material, collects stain position and degree data in real time and uploads the stain position and degree data to the industrial computer, and the industrial computer intelligently plans the optimal cleaning track and the spraying amount and position of the cleaning liquid according to the stain position and degree data, so that cleaning by experience or blind cleaning is avoided, and the precision and efficiency are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, and in particular to an automatic plate wiping device for printing presses. Background Technology

[0002] In existing technologies, flexographic printing presses require very strict and sensitive control over the cleaning of printing plates, as this directly affects the quality of the print. Low ambient humidity can cause the printing plates to dry out, resulting in distorted or missing prints.

[0003] A search revealed Chinese patent application number 202323240108.1, which discloses a flexographic printing press and its automatic plate-cleaning device. This device uses a rotating assembly to rotate a guide rail, causing a brush head assembly on the guide rail to move towards the printing plate. A drive device within the guide rail drives the brush head assembly to slide along the guide rail, thus cleaning the printing plate. This effectively solves the problem of needing to stop the machine and disassemble the printing plate for cleaning, significantly reducing the difficulty and cost of cleaning flexographic printing press plates. However, in actual use, the plate-cleaning device requires a complete cleaning of the printing plate, and also cleans areas that don't need cleaning, reducing the cleaning speed and potentially leading to excessive use of cleaning agents. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic printing plate erasing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic plate-cleaning device for a printing press, comprising:

[0007] The supporting base plate has an industrial computer for controlling the overall device and a multi-axis robotic arm for cleaning installed on both sides of the front end of its upper surface. The end of the multi-axis robotic arm is provided with a cloth cleaning turntable.

[0008] A negative pressure connection box has a negative pressure suction plate fixedly installed at its top. A matching porous rubber pad is fixedly connected to the upper surface of the negative pressure suction plate, and a printing plate is provided on the upper surface of the matching porous rubber pad.

[0009] A top mounting frame is positioned above the supporting base plate, with a high-definition camera for collecting data on the surface of the printing plate installed at one end of the top of the top mounting frame, and a miniature liquid pump and spray head for spraying cleaning agent onto the surface of the printing plate installed in the middle.

[0010] As a further improvement of this utility model: a vacuum pump is fixedly installed at the bottom of one end of the negative pressure connection box, and a vacuum pipe is fixedly installed at one end of the vacuum pump.

[0011] As a further improvement of this utility model: a solenoid valve tube is fixedly installed at one end of the air extraction conduit, and the solenoid valve tube is fixedly installed at one end of the negative pressure connection box.

[0012] As a further improvement of this utility model: both sides of the negative pressure connection box are fixedly installed with screw fitting sleeves, and the internal threads of the screw fitting sleeves are fitted with transmission screws.

[0013] As a further improvement of this utility model: both ends of the transmission screw are rotatably mounted with end mounting brackets, and one end of the two transmission screws is connected to a servo motor via a sprocket and chain drive.

[0014] As a further improvement of this utility model: both sides of the micro pump are fixedly installed with sliding rod sleeves, and guide rods are slidably installed inside the sliding rod sleeves.

[0015] As a further improvement of this utility model: both ends of the two guide slide rods are fixedly installed with end mounting plates, and a transverse cylinder is fixedly installed on one side of one of the end mounting plates.

[0016] As a further embodiment of this utility model: multiple support columns are fixedly installed at equal intervals on both sides of the bottom end of the top mounting frame, and the multiple support columns are fixedly installed on the bearing base plate.

[0017] Compared with the prior art, this utility model provides an automatic plate-cleaning device for printing presses, which has the following beneficial effects:

[0018] 1. The automatic plate-cleaning device of this printing press uses an industrial computer to coordinate all key components, achieving full-process automation. A high-definition camera scans the surface of the printing plate, collects data on the location and extent of stains in real time, and uploads it to the industrial computer. Based on this data, the industrial computer intelligently plans the optimal cleaning trajectory and the amount and location of cleaning fluid spray, avoiding cleaning based on experience or blindly, and greatly improving accuracy and efficiency.

[0019] 2. This automatic plate-cleaning device for printing presses, through a negative pressure system consisting of a porous rubber pad, vent holes, a negative pressure connection box, and an air pump, can reliably and contactlessly fix the printing plate. The opening of the solenoid valve and the air pump instantly creates suction force, and the solenoid valve immediately closes to cut off the air pump after the negative pressure is formed. The low pressure is maintained by the sealing system, which significantly reduces the continuous running time and noise of the air pump, reduces energy consumption, and extends the equipment life. The porous rubber pad provides soft contact, effectively protecting the surface of the printing plate from scratches.

[0020] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0021] Figure 1 Schematic diagram of the three-dimensional structure of the overall assembly of this utility model Figure 1 ;

[0022] Figure 2 Schematic diagram of the three-dimensional structure of the overall assembly of this utility model Figure 2 ;

[0023] Figure 3 Schematic diagram of the three-dimensional structure of the overall assembly of this utility model Figure 3 .

[0024] In the diagram: 1. Support base plate; 2. Industrial computer; 3. End mounting bracket; 4. Servo motor; 5. Transmission screw; 6. Screw fitting sleeve; 7. Negative pressure connection box; 8. Negative pressure extraction plate; 9. Fitting porous rubber pad; 10. Printing plate; 11. Support column; 12. Top mounting frame; 13. Mounting arm; 14. High-definition camera; 15. Liquid storage tank; 16. End mounting plate; 17. Guide slide rod; 18. Slide rod sleeve; 19. Miniature liquid pump; 20. Spray head; 21. Lateral movement cylinder; 22. Multi-axis robotic arm; 23. Air pump; 24. Air extraction conduit; 25. Solenoid valve tube; 26. Cloth cleaning turntable. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] An automatic plate-cleaning device for a printing press, such as Figures 1 to 3 As shown, it includes: a support base plate 1 for supporting the entire device, an industrial computer 2 for controlling the entire device, a multi-axis robotic arm 22 for cleaning, and a negative pressure connection box 7 for fixing and moving the printing plate 10.

[0027] Two end mounting brackets 3 are fixedly installed at both ends of the upper surface of the bearing base plate 1. A transmission screw 5 is rotatably installed on both sides between the two end mounting brackets 3. A screw fitting sleeve 6 is threaded onto the outer wall of the transmission screw 5. The two screw fitting sleeves 6 are fixedly installed on both sides of the negative pressure connection box 7.

[0028] One of the end mounting brackets 3 has a servo motor 4 at its bottom end. The servo motor 4 has a motor base fixedly mounted at its bottom end. The motor base is fixedly mounted on the upper surface of the bearing base plate 1. The output shaft of the servo motor 4 is connected to two transmission screws 5 through a sprocket and chain, so that the two transmission screws 5 rotate synchronously. Then, through the screw engagement sleeve 6, the negative pressure connection box 7 moves horizontally and slowly at a uniform speed.

[0029] A negative pressure suction plate 8 is fixedly installed on the top of the negative pressure connection box 7. Multiple ventilation holes are equidistantly opened on the upper surface of the negative pressure suction plate 8, and the ventilation holes are connected to the inner cavity of the negative pressure connection box 7. Furthermore, a matching porous rubber pad 9 is fixedly connected to the upper surface of the negative pressure suction plate 8. The holes of the matching porous rubber pad 9 correspond to the ventilation holes, which facilitates the extraction of air.

[0030] The printing plate 10 is placed on the upper surface of the porous rubber pad 9. The thickness of the porous rubber pad 9 is set to one to two millimeters, which can not only fully protect the printing plate 10, but also facilitate the negative pressure connecting box 7 to fix the printing plate 10.

[0031] A vacuum pump 23 is fixedly installed at one end of the negative pressure connection box 7. A vacuum pipe 24 is fixedly installed at one end of the vacuum pump 23. A solenoid valve pipe 25 is fixedly installed at one end of the vacuum pipe 24. The solenoid valve pipe 25 is fixedly installed at one end of the negative pressure connection box 7. The solenoid valve pipe 25 includes a pipe and a solenoid valve.

[0032] When the solenoid valve is opened, the air pump 23 draws air from inside the negative pressure connection box 7 through the air extraction pipe 24, and then draws air from the vent and the holes of the mating porous rubber pad 9 to form a negative pressure, which fixes the printing plate 10 on the mating porous rubber pad 9. After the negative pressure is formed, the solenoid valve is closed to maintain the low pressure inside the negative pressure connection box 7 and prevent the air pump 23 from running for a long time. At the same time, if it is necessary to contact the fixing of the printing plate 10, the solenoid valve is opened to allow air to flow back to the negative pressure connection box 7 so that the internal and external air pressures are consistent.

[0033] Multiple support columns 11 are equidistantly arranged on both the front and back sides of the negative pressure connection box 7. The multiple support columns 11 are fixedly installed on the bearing base plate 1, and a top mounting frame 12 is fixedly installed on the top of the multiple support columns 11.

[0034] A mounting arm 13 is fixedly installed at one end of the top of the top mounting frame 12. A high-definition camera 14 for collecting data on the surface of the printing plate 10 is fixedly installed inside the mounting arm 13. A miniature liquid pump 19 and a spray head 20 for spraying cleaning agent onto the surface of the printing plate 10 are provided in the middle of the top of the top mounting frame 12. The spray head 20 is fixedly installed on the bottom outlet of the miniature liquid pump 19.

[0035] Both sides of the miniature liquid pump 19 are fixedly installed with sliding rod sleeves 18. Guide rods 17 are slidably installed inside the sliding rod sleeves 18. End mounting plates 16 are fixedly installed at both ends of the two guide rods 17. The end mounting plates 16 are fixedly installed on the two side frames of the top mounting frame 12. A transverse cylinder 21 (existing mature technology, which will not be described in detail in this application) is fixedly installed on one side of one of the end mounting plates 16. The telescopic end of the transverse cylinder 21 passes through the end mounting plate 16 and is fixedly installed on the front of the miniature liquid pump 19.

[0036] A liquid storage tank 15 is fixedly installed at the top of the top mounting frame 12 between the mounting arm 13 and one of the end mounting plates 16. The liquid storage tank 15 contains cleaning fluid. A miniature pump 19 draws the cleaning fluid through the liquid storage tank 15 via a connecting hose and then sprays it onto the upper surface of the printing plate 10 through a spray head 20.

[0037] A multi-axis robotic arm 22 (various types are available on the market, and the choice depends on the actual needs) is set on the side of the miniature liquid pump 19 away from the high-definition camera 14 and is fixedly installed on the upper surface of the support base plate 1. A motor is fixedly installed at the end of the multi-axis robotic arm 22, and a cloth cleaning turntable 26 is fixedly installed on the output shaft of the motor. The cloth cleaning turntable 26 cleans the upper surface of the printing plate 10 during high-speed rotation.

[0038] Industrial computer 2 and multi-axis robotic arm 22 are both located on the front of negative pressure connection box 7 and respectively at both ends of the support base plate 1. Industrial computer 2 controls the start and stop of vacuum pump 23 and the opening and closing of solenoid valve, and at the same time controls the output speed of servo motor 4 to achieve the purpose of controlling the moving speed of printing plate 10. High-definition camera 14 transmits the data collected on the upper surface of printing plate 10 to industrial computer 2. Industrial computer 2 determines the position of printing plate 10 that needs to be cleaned, determines the spray trajectory of cleaning liquid and the cleaning trajectory of printing plate 10 based on the collected data, and then quickly adjusts the position of micro liquid pump 19 through transverse cylinder 21 and determines the amount of cleaning liquid sprayed by micro liquid pump 19. At the same time, multi-axis robotic arm 22 moves cloth cleaning turntable 26 according to the cleaning trajectory, and cleans printing plate 10 during the rotation.

[0039] Working principle:

[0040] Please refer to Figures 1 to 3 Assemble the device as shown in the figure;

[0041] When using this device, the printing plate 10 is first placed on the mating porous rubber pad 9. The industrial computer 2 controls the opening of the solenoid valve and the start of the vacuum pump 23. The vacuum pump 23 draws air from the inside of the negative pressure connection box 7 through the vacuum pipe 24, and then draws air from the vent and the holes of the mating porous rubber pad 9 to form a negative pressure, which fixes the printing plate 10 on the mating porous rubber pad 9. After the negative pressure is formed, the solenoid valve closes to maintain the low pressure inside the negative pressure connection box 7. The industrial computer 2 controls the start of the servo motor 4, which drives the negative pressure connection box 7 to move stably at a low speed through the transmission screw 5. First, the high-definition camera 14 transmits the data collected from the upper surface of the printing plate 10 to the industrial computer 2. Based on the collected data, the industrial computer 2 determines the location of the printing plate 10 that needs cleaning, the spray trajectory of the cleaning fluid, and the cleaning trajectory of the printing plate 10. Then, the position of the micro-pump 19 is quickly adjusted by the transverse cylinder 21, and the amount of cleaning fluid sprayed by the micro-pump 19 is determined, and the cleaning fluid is sprayed onto the upper surface of the printing plate 10. Finally, the multi-axis robotic arm 22 moves the cloth cleaning turntable 26 along the cleaning trajectory, and cleans the printing plate 10 during the rotation.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A printing press automatic blanket cleaning apparatus characterized by, Include: The upper surface of the bearing bottom plate (1) is provided with an industrial computer (2) for controlling the whole device and a multi-axis mechanical arm (22) for cleaning on both sides of the front end, and the end of the multi-axis mechanical arm (22) is provided with a velvet cleaning turntable (26); The top end of the negative pressure connection box (7) is fixedly provided with a negative pressure air suction plate (8), the upper surface of the negative pressure air suction plate (8) is fixedly connected with a matching porous rubber pad (9), and the upper surface of the matching porous rubber pad (9) is provided with a printing plate (10); The top mounting frame (12) is arranged above the bearing bottom plate (1), and one end of the top of the top mounting frame (12) is provided with a high-definition camera (14) for collecting surface data of the printing plate (10), and the middle part is provided with a micro liquid pump (19) and a spray head (20) for spraying cleaning agent to the surface of the printing plate (10).

2. A print machine automatic blanket cleaning device as claimed in claim 1 wherein: One end of the negative pressure connection box (7) is fixedly provided with an air suction pump (23), and one end of the air suction pump (23) is fixedly provided with an air suction pipe (24).

3. A print machine automatic blanket cleaning device as claimed in claim 2, wherein: One end of the air suction pipe (24) is fixedly provided with an electromagnetic valve pipe (25), and the electromagnetic valve pipe (25) is fixedly installed on one end of the negative pressure connection box (7).

4. A print machine automatic blanket cleaning device as claimed in claim 1, wherein: Both sides of the negative pressure connection box (7) are fixedly provided with a screw rod matching sleeve (6), and the inside of the screw rod matching sleeve (6) is threadedly matched with a transmission screw rod (5).

5. A print er automatic squeegee device as claimed in claim 4, wherein: Both ends of the transmission screw rod (5) are rotatably provided with an end mounting frame (3), and one end of the two transmission screw rods (5) is connected with a servo motor (4) through a chain wheel and chain transmission.

6. A print machine automatic blanket cleaning device as claimed in claim 1, wherein: Both sides of the micro liquid pump (19) are fixedly provided with a sliding rod sleeve (18), and the inside of the sliding rod sleeve (18) is slidably provided with a guide sliding rod (17).

7. A print er automatic squeegee device as claimed in claim 6, wherein: Both ends of the two guide sliding rods (17) are fixedly provided with an end mounting plate (16), and one side of one of the end mounting plates (16) is fixedly provided with a transverse moving cylinder (21).

8. A print machine automatic blanket cleaning device as claimed in claim 1, wherein: Both sides of the bottom end of the top mounting frame (12) are fixedly provided with a plurality of support columns (11) at equal intervals, and the plurality of support columns (11) are fixedly installed on the bearing bottom plate (1).

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