Automatic cleaning equipment for PCB (printed circuit board) film stripping

Abstract

The invention relates to the technical field of circuit board cleaning, and discloses PCB (printed circuit board) film stripping automatic cleaning equipment which comprises an ultrasonic cleaning machine, a cleaning pool is arranged on the ultrasonic cleaning machine, a plurality of lifting mechanisms are arranged on the outer wall of the cleaning pool at equal intervals, and a fixing frame is fixedly connected below each lifting mechanism; two U-shaped plates are fixedly connected to the outer walls of the two sides of the bottom of the fixing frame, a PCB is arranged between the two U-shaped plates, first through grooves are formed in the outer walls of the two sides of each U-shaped plate, and a vertical plate is arranged on one side of each first through groove. According to the PCB cleaning device, PCBs in the cleaning pool can be separated, the PCBs can be completely exposed in the cleaning pool, in the cleaning process, the PCBs can be intermittently clamped through rubber rotating rollers on all first fixing sleeves, meanwhile, when the rubber rotating rollers move, oil films at the contact positions can be scraped, and therefore the cleaning effect is improved. And the PCB can be fully cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board cleaning, and in particular to a PCB circuit board film stripping automatic cleaning device. Background Art

[0002] PCB, also known as printed circuit board, is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. During the production process, oil will remain on the surface of the circuit board to form an oil film, so it needs to be cleaned. A Chinese patent with patent publication number CN115811837B discloses a PCB circuit board film stripping and cleaning device, which belongs to the field of circuit board cleaning and includes an ultrasonic cleaning machine body, an ultrasonic cleaning tank is arranged inside the ultrasonic cleaning machine body, and a placing device is arranged in the ultrasonic cleaning tank of the ultrasonic cleaning machine body. The placing device includes a clamping frame, a lifting bracket and an electric telescopic rod, and a lifting bracket is arranged inside the clamping frame, and the lifting bracket is movably installed inside the clamping frame. The first partition plate, the second partition plate and the third partition plate in the lifting bracket divide the clamping chamber of the assembly frame into multiple placement chambers, and then the circuit boards to be cleaned are placed one by one in each placement chamber in the clamping chamber. The way the circuit boards are placed in the clamping chamber can improve the disadvantages of centralized placement of circuit boards, such as reducing the trouble of incomplete cleaning caused by the circuit boards sticking to each other after being wet, and the stacking of circuit boards at the bottom of the ultrasonic cleaning tank of the ultrasonic cleaning machine body will also prolong the cleaning time; however, during the cleaning process, oil stains are very easy to adhere to the mesh plate, which can easily cause secondary pollution to the circuit board. At the same time, the circuit board in the clamping chamber is not clamped and fixed, and it is easy to tip over, so that the circuit board contacts and scratches the corners of the clamping chamber, which can easily cause damage to the circuit board.

[0003] In view of this, the present invention proposes an automatic film stripping and cleaning device for PCB circuit boards to solve the problems existing in the above-mentioned prior art. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatic cleaning device for PCB circuit board film stripping.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A PCB circuit board film stripping automatic cleaning device comprises an ultrasonic cleaning machine, wherein the ultrasonic cleaning machine is provided with a cleaning pool, a plurality of lifting mechanisms are equidistantly arranged on the outer wall of the cleaning pool, and a fixing frame is fixedly connected below each lifting mechanism, two U-shaped plates are fixedly connected to the outer walls on both sides of the bottom of the fixing frame, and a PCB circuit board is arranged between the two U-shaped plates, a through slot is opened on the outer walls on both sides of each of the U-shaped plates, and a vertical plate is arranged on one side of the through slot, a plurality of convex plates are fixedly connected to the outer wall of one side of the vertical plate close to the through slot at equal distances, a plurality of rotating shafts are rotatably connected to the inner side of the through slot at equal distances through a torsion spring, and a fixing sleeve is fixedly connected to the outer wall of the middle part of the rotating shaft, a plurality of pressing mechanisms are equidistantly arranged on the outer wall of one side of the fixing sleeve close to the PCB circuit board, and a toggle plate is fixedly connected to the outer wall of the other side of the fixing sleeve.

[0006] Furthermore, the lifting mechanism includes two electric telescopic rods, which are respectively fixedly connected to the outer walls at both ends of the cleaning pool, and the telescopic ends of the two electric telescopic rods are fixedly connected to the same lifting plate, and the fixing frame is fixedly connected to the outer wall at the bottom of the lifting plate.

[0007] Furthermore, the pressing mechanism includes a plurality of fixed blocks, a accommodating chamber 2 is arranged inside the fixed block, and a piston plate is sealingly and slidably connected inside the accommodating chamber 2, two connecting springs 1 are fixedly connected between the piston plate and the accommodating chamber 2, and a through hole is opened in the middle of the piston plate, and a one-way liquid inlet is arranged on the outer wall on one side of the top of the accommodating chamber 2 close to the fixed sleeve 1.

[0008] Furthermore, the fixing block is sealingly and slidingly connected to the outer wall of one side of the PCB circuit board with a hollow sliding rod, and one end of the hollow sliding rod is sealingly and fixedly connected to the inner wall of the through hole, the other end of the hollow sliding rod is fixedly connected to a mounting frame, and a rubber roller is rotatably connected inside the mounting frame.

[0009] Furthermore, a first accommodating chamber is provided inside the mounting frame, the hollow sliding rod is connected to the first accommodating chamber, and a plurality of liquid outlet holes are provided on the outside of the first accommodating chamber close to the rubber roller.

[0010] Furthermore, a through groove 2 is provided on the outer wall of one side of the bottom of each U-shaped plate close to the inner wall of the cleaning tank, and a plurality of rotating shafts 2 are rotatably connected at equal distances on the outer wall of the through groove 2 close to the PCB circuit board, one end of each rotating shaft 2 is fixedly connected to a gear, and the same rack is meshed under the plurality of gears.

[0011] Furthermore, the rack is slidably connected to the outer wall of the bottom of the second through groove, and the outer wall on the side of the rack closest to the inner wall of the cleaning tank is fixedly connected with a magnetic plate 2, a connecting spring 2 is fixedly connected between the magnetic plate 2 and the U-shaped plate, and one side of the magnetic plate 2 is provided with a plurality of magnetic plates 1 that are mutually exclusive with the magnetic plate 2, and the plurality of magnetic plates 1 are fixedly connected to the inner wall of the cleaning tank at equal distances.

[0012] Furthermore, the other end of the second rotating shaft is fixedly connected to a second fixing sleeve, and the upper outer wall of the second fixing sleeve is symmetrically fixedly connected to two elastic telescopic columns, and the top of each elastic telescopic column is provided with a ball, and the surface of the ball contacts the bottom outer wall of the PCB circuit board.

[0013] Furthermore, two mounting plates are fixedly connected to the outer walls of the top and bottom of the mounting frame, and a rotating shaft three is rotatably connected between the two mounting plates. A transmission mechanism is arranged between the rotating shaft three and the rubber roller, and the transmission mechanism includes a pulley one, a belt and a pulley two. The pulley one is fixedly connected to the outer wall of one side of the rotating shaft three, and the pulley two is fixedly connected to the outer wall of one side of the rubber roller. The belt is sleeved on the outer walls of the pulley one and the pulley two.

[0014] Furthermore, a plurality of fixed plates are fixedly connected to the outer walls of the three rotating shafts at equal distances, and three accommodating cavities are provided inside the fixed plates. Scrapers are slidably connected to the outer walls of the three accommodating cavities, and three connecting springs are fixedly connected between the scrapers and the inner walls of the three accommodating cavities, and one of the scrapers is in contact with the surface of the rubber roller.

[0015] The beneficial effects of the present invention are: 1. The present invention can separate the PCB circuit boards in the cleaning tank, and can make the circuit boards completely exposed in the cleaning tank. In the cleaning process, the rubber rollers on each fixed sleeve can intermittently clamp the PCB circuit boards. At the same time, when the rubber rollers move, they can scrape the oil film at the contact point, so that the PCB circuit boards can be fully cleaned.

[0016] 2. Through the elastic telescopic column, the bottom of the PCB circuit board can be supported in turn to maintain the stability of the PCB circuit board and avoid detachment when moving up and down.

[0017] 3. The scraper can scrape off the oil stains on the rubber roller to prevent the oil stains from adhering to the rubber roller and causing secondary pollution to the PCB circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a PCB circuit board stripping automatic cleaning device proposed in Example 1; Figure 2 This is a partial structural schematic diagram of a PCB circuit board stripping automatic cleaning device proposed in Example 1; Figure 3 This is a schematic diagram of the bottom structure of a fixed frame of a PCB circuit board stripping automatic cleaning device proposed in Example 1; Figure 4 A PCB circuit board stripping automatic cleaning device proposed in Example 1 Figure 3The schematic diagram of the structure section at A in the middle; Figure 5 A schematic diagram of a top-view cross-sectional structure of a fixed block of a PCB circuit board stripping and automatic cleaning device proposed in Example 1; Figure 6 A schematic diagram of the side cross-sectional structure of a PCB circuit board stripping automatic cleaning device proposed in Example 2; Figure 7 A PCB circuit board stripping automatic cleaning device proposed in Example 2 Figure 6 Schematic diagram of the structure at B in the middle; Figure 8 A schematic diagram of the cross-sectional structure of the through slot of a PCB circuit board stripping automatic cleaning device proposed in Example 2; Fig. 9 This is a schematic diagram of the external structure of a mounting frame of a PCB circuit board stripping automatic cleaning device proposed in Example 3; Fig.10 This is a schematic diagram of the cross-sectional structure of a fixed block of a PCB circuit board stripping automatic cleaning device proposed in Example 3.

[0019] In the figure: 1. Ultrasonic cleaning machine; 2. Electric telescopic rod; 3. Cleaning pool; 4. Lifting plate; 5. Vertical plate; 6. Convex plate; 7. PCB circuit board; 8. Fixing frame; 9. U-shaped plate; 10. Through slot 1; 11. Rotating shaft 1; 12. Toggle plate; 13. Hollow slide bar; 14. Fixing block; 15. Mounting frame; 16. Rubber roller; 17. One-way liquid inlet; 18. Fixing sleeve 1; 19. Connecting spring 1; 20. Piston plate; 21. Liquid outlet; 2 2. Accommodating chamber one; 23. Through hole; 24. Accommodating chamber two; 25. Magnetic plate one; 26. Magnetic plate two; 27. Connecting spring two; 28. Through slot two; 29. ​​Elastic telescopic column; 30. Ball; 31. Fixed sleeve two; 32. Rotating shaft two; 33. Rack; 34. Gear; 35. Rotating shaft three; 36. Pulley one; 37. Belt; 38. Pulley two; 39. Fixed plate; 40. Scraper; 41. Mounting plate; 42. Accommodating chamber three; 43. Connecting spring three. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0021] Example 1: Reference Figure 1-Figure 5, a PCB circuit board film stripping automatic cleaning equipment, including an ultrasonic cleaning machine 1, a cleaning pool 3 is arranged on the ultrasonic cleaning machine 1, and a plurality of lifting mechanisms are arranged at equal distances on the outer wall of the cleaning pool 3, and a fixing frame 8 is fixedly connected under each lifting mechanism, and two U-shaped plates 9 are fixedly connected to the outer walls on both sides of the bottom of the fixing frame 8, and a PCB circuit board 7 is arranged between the two U-shaped plates 9, and a through groove 10 is opened on the outer wall on both sides of each U-shaped plate 9, and a vertical plate 5 is arranged on one side of the through groove 10, and a plurality of convex plates 6 are fixedly connected to the outer wall of the vertical plate 5 close to the through groove 10 at equal distances, and the through groove 10 A plurality of rotating shafts 11 are rotatably connected inside by torsion springs at equal intervals, and a fixing sleeve 18 is fixedly connected to the outer wall of the middle part of the rotating shaft 11, and a plurality of pressing mechanisms are arranged at equal intervals on the outer wall of the fixing sleeve 18 on one side close to the PCB circuit board 7, and a toggle plate 12 is fixedly connected to the outer wall of the other side of the fixing sleeve 18, and the cleaning liquid is poured into the cleaning tank 3 in the ultrasonic cleaning machine 1, and then the U-shaped plate 9 on the fixing frame 8 is moved upward by each lifting mechanism, so that the upper half of the U-shaped plate 9 is exposed from the cleaning tank 3, and then each PCB circuit board 7 is inserted between the corresponding two U-shaped plates 9, so that The PCB circuit board 7 can be clamped by the pressing mechanism on each fixing sleeve 18. After the PCB circuit board 7 is clamped and fixed, each PCB circuit board 7 is moved downward by the lifting mechanism, so that the cleaning liquid in the cleaning tank 3 immerses the PCB circuit board 7, so that the PCB circuit board 7 is completely exposed to the cleaning liquid, and then each PCB board is moved up and down in the cleaning liquid again by the lifting mechanism, and the ultrasonic cleaning machine 1 is started at the same time, so that the PCB circuit board 7 can be cleaned; and in the process of the U-shaped plate 9 moving up and down, each toggle plate 12 will contact with the convex plate 6 on the corresponding vertical plate 5. The rotating shaft 11 is touched, and the rotating shaft 11 is rotated. Since the rotating shaft 11 is rotatably connected to the inside of the through slot 10 through the torsion spring, the torsion spring on the rotating shaft 11 is deformed by force, and at the same time, the multiple pressing mechanisms on the fixed sleeve 18 will move, so that the rotating shaft 11 brings the multiple pressing mechanisms to swing back and forth, so that each pressing mechanism can intermittently clamp the PCB circuit board 7 to avoid that the contact between the pressing mechanism and the PCB circuit board 7 cannot be cleaned. At the same time, when the ultrasonic cleaning machine 1 is working, the PCB circuit board 7 can be thrown through the lifting mechanism, so that the PCB circuit board 7 can be fully cleaned.

[0022] As a further solution in the present invention, the lifting mechanism includes two electric telescopic rods 2, which are respectively fixedly connected to the outer walls at both ends of the cleaning pool 3, and the telescopic ends of the two electric telescopic rods 2 are fixedly connected to the same lifting plate 4, and the fixed frame 8 is fixedly connected to the outer wall at the bottom of the lifting plate 4. The electric telescopic rods 2 can move the fixed frame 8 under the lifting plate 4 up and down, thereby causing the U-shaped plate 9 to move synchronously.

[0023] As a further solution in the present invention, the pressing mechanism includes a plurality of fixed blocks 14, a second accommodating chamber 24 is arranged inside the fixed block 14, and a piston plate 20 is sealed and slidably connected inside the second accommodating chamber 24, two connecting springs 19 are fixedly connected between the piston plate 20 and the second accommodating chamber 24, and a through hole 23 is opened in the middle of the piston plate 20, and a one-way liquid inlet 17 is arranged on the outer wall on one side of the top of the second accommodating chamber 24 close to the fixed sleeve 18.

[0024] As a further solution of the present invention, the fixing block 14 is sealingly and slidingly connected with a hollow slide bar 13 on the outer wall of one side close to the PCB circuit board 7, and one end of the hollow slide bar 13 is sealingly and fixedly connected to the inner wall of the through hole 23, and the other end of the hollow slide bar 13 is fixedly connected with a mounting frame 15, and a rubber roller 16 is rotatably connected inside the mounting frame 15. When the PCB circuit board 7 is inserted between the corresponding two U-shaped plates 9, the surface of the PCB circuit board 7 will first contact the surface of the rubber roller 16 in the mounting frame 15. As the PCB circuit board 7 moves downward, the fixing sleeve 18 rotates with the rotating shaft 11. At this time, the torsion spring is deformed by force. At the same time, the rubber roller 16 pushes the hollow slide bar 13 to retract into the accommodating chamber 2 24. At this time, the piston plate 20 compresses the multiple connecting springs 19, so that the PCB circuit board 7 can be clamped and fixed under the action of the rebound force of the multiple torsion springs and the multiple connecting springs 19.

[0025] As a further solution of the present invention, a receiving chamber 22 is provided inside the mounting frame 15, the hollow sliding rod 13 is connected to the receiving chamber 22, and a plurality of liquid outlet holes 21 are provided on the outside of the receiving chamber 22 near the rubber roller 16. When the rotating shaft 11 swings back and forth with the plurality of pressing mechanisms, each rubber roller 16 will contact the surface of the PCB circuit board 7, so that under the action of friction, the rubber roller 16 will rotate and can scrape the oil film at the contact point on the surface of the PCB circuit board 7, and in the above process, the oil film in the receiving chamber 24 The piston plate 20 will move back and forth under the force. When the piston plate 20 squeezes the connecting spring 19, the cleaning liquid in the space where the connecting spring 19 is located will enter the hollow slide rod 13 through the through hole 23, and then enter the accommodating cavity 22 of the mounting frame 15, and finally be sprayed out through the multiple liquid outlet holes 21. When the piston plate 20 is reset, the external cleaning liquid can enter the space where the connecting spring 19 is located through the one-way liquid inlet 17. This cycle is repeated to rinse the surface of the rubber roller 16 and remove the oil stains attached to the surface of the rubber roller 16.

[0026] Working principle: Pour cleaning liquid into the cleaning tank 3 in the ultrasonic cleaning machine 1, and then the fixed frame 8 under the lifting plate 4 can be moved up and down by the electric telescopic rod 2, so that the U-shaped plate 9 moves synchronously until the upper half of the U-shaped plate 9 is exposed from the cleaning tank 3, and then each PCB circuit board 7 is inserted between the corresponding two U-shaped plates 9, and the surface of the PCB circuit board 7 will first contact the surface of the rubber roller 16 in the mounting frame 15, and as the PCB circuit board 7 moves downward, the fixed sleeve 18 rotates with the rotating shaft 11, and the torsion spring is deformed by force. At the same time, the rubber roller 16 pushes the hollow slide rod 13 to retract into the accommodating chamber 2 24, and the piston plate 20 compresses the multiple connecting springs 19, so that the PCB circuit board 7 can be clamped and fixed under the action of the rebound force of the multiple torsion springs and the multiple connecting springs 19. After the PCB circuit board 7 is clamped and fixed, each PCB circuit board 7 is moved downward by the electric telescopic rod 2, so that the cleaning liquid in the cleaning tank 3 will The PCB circuit board 7 is immersed, so that the PCB circuit board 7 is completely exposed to the cleaning liquid, and then the electric telescopic rod 2 is used to make each PCB board move up and down in the cleaning liquid again, and the ultrasonic cleaning machine 1 is started at the same time, so that the PCB circuit board 7 can be cleaned; and in the process of the U-shaped plate 9 moving up and down, each toggle plate 12 will contact the convex plate 6 on the corresponding vertical plate 5, so that the rotating shaft 11 is rotated. Because the rotating shaft 11 is connected to the inside of the through groove 10 through the torsion spring, the torsion spring on the rotating shaft 11 is deformed by force, and at the same time, the multiple pressing mechanisms on the fixed sleeve 18 will move, so that the rotating shaft 11 swings back and forth with the multiple pressing mechanisms, so that each pressing mechanism can intermittently clamp the PCB circuit board 7, avoiding that the contact between the pressing mechanism and the PCB circuit board 7 cannot be cleaned, and at the same time, when the ultrasonic cleaning machine 1 is working, the PCB circuit board 7 can be thrown through the lifting mechanism, so that the PCB circuit board 7 can be fully cleaned.

[0027] Example 2: Reference Figure 1-Figure 8 , a PCB circuit board film stripping automatic cleaning equipment, compared with Example 1, on the basis of Example 1, a through groove 28 is provided on the outer wall of one side of the bottom of each U-shaped plate 9 close to the inner wall of the cleaning tank 3, and the through groove 28 is rotatably connected with multiple rotating shafts 2 32 at equal distances on the outer wall of the PCB circuit board 7, one end of the rotating shaft 32 is fixedly connected with a gear 34, and the same rack 33 is meshed under the multiple gears 34.

[0028] As a further solution in the present invention, the rack 33 is slidably connected to the outer wall at the bottom of the through groove 28, and the outer wall on the side of the rack 33 closest to the inner wall of the cleaning tank 3 is fixedly connected with a magnetic plate 26, a connecting spring 27 is fixedly connected between the magnetic plate 26 and the U-shaped plate 9, and one side of the magnetic plate 26 is provided with a plurality of magnetic plates 25 that are mutually exclusive with the magnetic plate 26, and the plurality of magnetic plates 25 are fixedly connected to the inner wall of the cleaning tank 3 at equal distances.

[0029] As a further solution in the present invention, the other end of the rotating shaft 32 is fixedly connected with a fixed sleeve 31, and two elastic telescopic columns 29 are symmetrically fixedly connected to the outer wall above the fixed sleeve 31. The top of the elastic telescopic column 29 is provided with a ball 30, and the surface of the ball 30 contacts the outer wall of the bottom of the PCB circuit board 7. When the PCB circuit board 7 moves up and down in the cleaning liquid, the magnetic plate 1 26 on the rack 33 will intermittently intersect with the magnetic plate 25 on the inner wall of the cleaning tank 3. Because the magnetic plate 1 26 and the magnetic plate 25 repel each other, when they intersect, the magnetic plate 1 26 can compress the connecting spring 27 away from the magnetic plate 25, so that the rack 33 in the through groove 28 moves. Because the rack 33 is meshed with the gears 34 on each rotating shaft 32, when the rack 33 moves, the rotating shaft 32 can be rotated at a small angle through the gear 34. The balls 30 at the top of the two elastic telescopic columns 29 on 1 are in contact with the bottom of the PCB circuit board 7, so that when the rotating shaft 2 32 rotates at a small angle, one of the elastic telescopic columns 29 can make the PCB circuit board 7 move slightly upward, and when the magnetic plate 1 26 no longer intersects with the magnetic plate 25, the rack 33 is reset under the rebound force of the connecting spring 27, and the PCB circuit board 7 is also reset and slightly moved upward again under the action of the other elastic telescopic column 29, and so on and so forth, causing it to shake, so that the elastic telescopic column 29 can take turns to support the bottom of the PCB circuit board 7, maintain the stability of the PCB circuit board 7, avoid separation during the up and down reciprocating movement, and in the process of the up and down reciprocating movement of the PCB circuit board 7, the PCB circuit board 7 can be continuously shaken, thereby greatly improving the cleaning effect of the PCB circuit board 7.

[0030] Working principle: When the PCB circuit board 7 moves back and forth up and down in the cleaning liquid, the magnetic plate 1 26 on the rack 33 will intermittently intersect with the magnetic plate 2 25 on the inner wall of the cleaning tank 3. Because the magnetic plate 1 26 and the magnetic plate 25 repel each other, when they intersect, the magnetic plate 1 26 can compress the connecting spring 27 away from the magnetic plate 25, so that the rack 33 in the through groove 28 moves. Because the rack 33 is engaged with the gears 34 on each rotating shaft 2 32, when the rack 33 moves, the rotating shaft 2 32 can be rotated at a small angle through the gear 34. Because the balls 30 at the top of the two elastic telescopic columns 29 on the fixed sleeve 2 31 are in contact with the bottom of the PCB circuit board 7, when the rotating shaft 2 32 rotates at a small angle, One of the elastic telescopic columns 29 can make the PCB circuit board 7 move slightly upwards, and when the magnetic plate 1 26 no longer intersects with the magnetic plate 2 25, the rack 33 is reset under the action of the rebound force of the connecting spring 27. At this time, the PCB circuit board 7 will also be reset and move slightly upwards again under the action of another elastic telescopic column 29. This cycle is repeated to make it shake, so that the elastic telescopic column 29 can support the bottom of the PCB circuit board 7 in turn to maintain the stability of the PCB circuit board 7 and avoid separation during the up and down reciprocating movement. In addition, during the up and down reciprocating movement of the PCB circuit board 7, the PCB circuit board 7 can be continuously shaken, thereby greatly improving the cleaning effect of the PCB circuit board 7.

[0031] Example 3: Reference Figure 1-Figure 10 , a PCB circuit board film stripping automatic cleaning equipment, compared with Example 2, on the basis of Example 2, two mounting plates 41 are fixedly connected to the top and bottom outer walls of the mounting frame 15, and a rotating shaft 35 is rotatably connected between the two mounting plates 41, and a transmission mechanism is arranged between the rotating shaft 35 and the rubber roller 16, and the transmission mechanism includes a pulley 1 36, a belt 37 and a pulley 2 38, the pulley 1 36 is fixedly connected to the outer wall of one side of the rotating shaft 35, the pulley 2 38 is fixedly connected to the outer wall of one side of the rubber roller 16, and the belt 37 is sleeved on the outer walls of the pulley 1 36 and the pulley 2 38. When the rubber roller 16 rotates due to friction, the rotating shaft 35 can be rotated synchronously through the transmission of the belt 37, the pulley 1 36 and the pulley 2 38.

[0032] As a further solution of the present invention, a plurality of fixed plates 39 are fixedly connected to the outer wall of the rotating shaft 35 at equal distances, and a receiving cavity 3 42 is arranged inside the fixed plates 39. The outer wall of the receiving cavity 3 42 is slidably connected to a scraper 40, and a connecting spring 3 43 is fixedly connected between the scraper 40 and the inner wall of the receiving cavity 3 42. One of the scrapers 40 contacts the surface of the rubber roller 16, so that when the rotating shaft 35 rotates, the plurality of fixed plates 39 on its outer wall will rotate at the same time, so that the scrapers 40 on the fixed plates 39 are intermittently It contacts the surface of the rubber roller 16. When the scraper 40 contacts the surface of the rubber roller 16, the connecting spring three 43 is compressed, so that under the action of the rebound force of the connecting spring three 43, the scraper 40 is tightly attached to the surface of the rubber roller 16, thereby scraping off the attached oil stains. When the scraper 40 is separated from the surface of the rubber roller 16, under the action of the rebound force of the connecting spring three 43, the scraper 40 is quickly reset, so that the cleaning liquid can rinse the surface of the scraper 40, remove the oil stains on the scraper 40, and keep the scraper 40 clean.

[0033] Working principle: When the rubber roller 16 rotates due to friction, the transmission of the belt 37, the pulley one 36 and the pulley two 38 can make the rotating shaft three 35 rotate synchronously, so that when the rotating shaft three 35 rotates, the multiple fixed plates 39 on its outer wall will rotate simultaneously, so that the scraper 40 on the fixed plate 39 intermittently contacts the surface of the rubber roller 16. When the scraper 40 contacts the surface of the rubber roller 16, the connecting spring three 43 is compressed, so that under the action of the rebound force of the connecting spring three 43, the scraper 40 is tightly attached to the surface of the rubber roller 16, so as to scrape off the attached oil stains, and when the scraper 40 is separated from the surface of the rubber roller 16, under the action of the rebound force of the connecting spring three 43, the scraper 40 is quickly reset, so that the cleaning liquid can rinse the surface of the scraper 40, remove the oil stains on the scraper 40, and keep the scraper 40 clean.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic cleaning device for stripping a PCB circuit board, comprising an ultrasonic cleaning machine (1), wherein the ultrasonic cleaning machine (1) is provided with a cleaning tank (3), characterized in that: The outer wall of the cleaning pool (3) is provided with a plurality of lifting mechanisms at equal distances, and a fixing frame (8) is fixedly connected below each lifting mechanism, two U-shaped plates (9) are fixedly connected to the outer walls on both sides of the bottom of the fixing frame (8), and a PCB circuit board (7) is provided between the two U-shaped plates (9), a through slot (10) is opened on the outer walls on both sides of each U-shaped plate (9), and a vertical plate (5) is provided on one side of the through slot (10), and a plurality of convex plates (6) are fixedly connected to the outer wall of the vertical plate (5) on the side close to the through slot (10) at equal distances, a plurality of rotating shafts (11) are rotatably connected to the inner part of the through slot (10) via torsion springs, and a fixing sleeve (18) is fixedly connected to the outer wall of the middle part of the rotating shaft (11), a plurality of pressing mechanisms are arranged on the outer wall of the fixing sleeve (18) on the side close to the PCB circuit board (7), and a toggle plate (12) is fixedly connected to the outer wall of the other side of the fixing sleeve (18); The pressing mechanism comprises a plurality of fixed blocks (14), wherein a second accommodating chamber (24) is provided inside the fixed blocks (14), and a piston plate (20) is sealingly and slidably connected inside the second accommodating chamber (24), two connecting springs (19) are fixedly connected between the piston plate (20) and the second accommodating chamber (24), and a through hole (23) is provided in the middle of the piston plate (20), and a one-way liquid inlet (17) is provided on the outer wall of one side of the top of the second accommodating chamber (24) close to the first fixed sleeve (18); The fixing block (14) is sealingly and slidably connected to the outer wall of one side close to the PCB circuit board (7) with a hollow slide rod (13), and one end of the hollow slide rod (13) is sealingly and fixedly connected to the inner wall of the through hole (23), and the other end of the hollow slide rod (13) is fixedly connected to a mounting frame (15), and a rubber roller (16) is rotatably connected inside the mounting frame (15).

2. The PCB circuit board stripping automatic cleaning device according to claim 1 is characterized in that: The lifting mechanism comprises two electric telescopic rods (2), the two electric telescopic rods (2) being fixedly connected to the outer walls at both ends of the cleaning pool (3), respectively, and the telescopic ends of the two electric telescopic rods (2) being fixedly connected to the same lifting plate (4), and the fixing frame (8) being fixedly connected to the outer wall at the bottom of the lifting plate (4).

3. The PCB circuit board stripping automatic cleaning device according to claim 2 is characterized in that: The mounting frame (15) is provided with a first accommodating chamber (22) inside, the hollow sliding rod (13) is connected to the first accommodating chamber (22), and a plurality of liquid outlet holes (21) are provided on the outside of the first accommodating chamber (22) near the rubber roller (16).

4. The PCB circuit board stripping automatic cleaning device according to claim 1 is characterized in that: A second through slot (28) is provided on the outer wall of one side of the bottom of each U-shaped plate (9) close to the inner wall of the cleaning tank (3), and a plurality of second rotating shafts (32) are rotatably connected at equal distances on the outer wall of the second through slot (28) close to the PCB circuit board (7), one end of each second rotating shaft (32) is fixedly connected to a gear (34), and a common rack (33) is meshed below the plurality of gears (34).

5. The PCB circuit board stripping automatic cleaning device according to claim 4 is characterized in that: The rack (33) is slidably connected to the outer wall at the bottom of the second through groove (28), and the outer wall of the rack (33) closest to the inner wall of the cleaning tank (3) is fixedly connected to the second magnetic plate (26), and a connecting spring (27) is fixedly connected between the second magnetic plate (26) and the U-shaped plate (9), and a plurality of magnetic plates (25) that are mutually exclusive with the second magnetic plate (26) are arranged on one side of the second magnetic plate (26), and the plurality of magnetic plates (25) are fixedly connected to the inner wall of the cleaning tank (3) at equal distances.

6. The PCB circuit board stripping automatic cleaning device according to claim 5 is characterized in that: The other end of the second rotating shaft (32) is fixedly connected to a second fixing sleeve (31), and the upper outer wall of the second fixing sleeve (31) is symmetrically fixedly connected to two elastic telescopic columns (29), and the tops of the elastic telescopic columns (29) are each provided with a ball (30), and the surface of the ball (30) is in contact with the bottom outer wall of the PCB circuit board (7).

7. The PCB circuit board stripping automatic cleaning device according to claim 3 is characterized in that: Two mounting plates (41) are fixedly connected to the top and bottom outer walls of the mounting frame (15), and a rotating shaft (35) is rotatably connected between the two mounting plates (41). A transmission mechanism is provided between the rotating shaft (35) and the rubber roller (16), and the transmission mechanism comprises a pulley (36), a belt (37) and a pulley (38). The pulley (36) is fixedly connected to the outer wall of one side of the rotating shaft (35), the pulley (38) is fixedly connected to the outer wall of one side of the rubber roller (16), and the belt (37) is sleeved on the outer walls of the pulley (36) and the pulley (38).

8. The PCB circuit board stripping automatic cleaning device according to claim 7 is characterized in that: The outer wall of the rotating shaft three (35) is fixedly connected with a plurality of fixed plates (39) at equal distances, and each of the fixed plates (39) is provided with a receiving cavity three (42) inside. The outer wall of each of the receiving cavities three (42) is slidably connected with a scraper (40), and a connecting spring three (43) is fixedly connected between the scraper (40) and the inner wall of the receiving cavity three (42), and one of the scrapers (40) is in contact with the surface of the rubber roller (16).

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