Base material pretreatment device for circuit board processing

Abstract

The invention relates to the technical field of circuit board processing, and discloses a circuit board processing base material pretreatment device which comprises a grinding table, a movable column is arranged on one side of the grinding table, electric sliding rails are fixedly connected to the two sides of the movable column, electric sliding blocks are slidably connected to the inner walls of the electric sliding rails, and fixing plates are fixedly connected to the bottoms of the electric sliding blocks. A grinding wheel is rotationally connected between the two fixing plates, a lifting assembly and a turnover assembly which drive the circuit board to turn over are arranged on the side face of the circuit board, a scraping assembly for treating chippings is arranged above the grinding table, and the chippings on the surface of the grinding table can be treated through the scraping assembly when the circuit board ascends and turns over. And in the descending process, chippings, falling to the position above the grinding table, on the circuit board can be cleaned again, chipping accumulation can be prevented, the cleanliness of the grinding table is kept, residual chippings on the surface of the cleaned workbench are reduced, and scratches or damage caused by the chippings to the surface of the circuit board are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of circuit board processing: specifically, it relates to a substrate pretreatment device for circuit board processing. Background Art

[0002] A substrate pretreatment device for circuit board processing is a device specifically used for preprocessing circuit board substrates. Through processes such as fixing, cutting, and grinding, it provides substrates that meet the requirements for subsequent circuit board processing. This device has broad application prospects in the electronics industry and is of great significance for improving the production efficiency and quality of circuit boards.

[0003] Some solutions have also been proposed in the prior art: for example, a patent with the publication number CN117584035A discloses a grinding device for circuit board pretreatment and its grinding method, including a processing table horizontally placed on the ground. A conveying seat is provided on the top of the processing table, and opposite conveyor belts are provided on the conveying seat. A grinding device for grinding the circuit board is also provided on the top of the processing table, and the grinding device is located above the conveying seat. The surface of the circuit board is ground by the grinding device, and during the grinding process, the circuit board can remove the waste chips generated by grinding and can clean the waste chips that fall onto the conveying rollers, so as not to affect the subsequent conveyed circuit boards.

[0004] When processing a circuit board substrate, burrs on its surface are ground to maintain the smoothness of the circuit board. After the burrs on one side are processed, the circuit board needs to be turned over to process the burrs on the other side. Since debris will be generated on the surface of the circuit board during the processing of the burrs on the first side, these debris will all fall onto the workbench after the circuit board is turned over. When the other side of the circuit board is placed on the workbench again for grinding, the debris will scratch or embed into the surface that has already been ground, resulting in damage to the circuit board.

[0005] Therefore, the present invention provides a substrate pretreatment device for circuit board processing. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art: solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A substrate pretreatment device for printed circuit board processing according to the present invention includes a grinding table. On one side of the grinding table, there is a movable column. On both sides of the movable column, there are fixedly connected electric slide rails. Inside the inner walls of the electric slide rails, there are slidably connected electric sliders. At the bottoms of the electric sliders, there are fixedly connected fixing plates. Between the two fixing plates, there is a rotatably connected grinding wheel. On the outer wall of the shaft rod of the grinding wheel, there are symmetrically fixedly connected first gears. The teeth of the first gears are all engaged with a first rack plate. The first rack plate is fixedly installed on one side of the electric slide rail. Above the grinding table, there is a printed circuit board. On the side of the printed circuit board, there is a lifting component and a flipping component for driving the printed circuit board to turn over. Above the grinding table, there is a scraping component for processing debris.

[0008] Preferably, the lifting component includes two fixed seats. Inside the inner walls of the fixed seats, there are slidably connected lifting blocks. Inside the inner walls of the lifting blocks, there are rotatably connected rotating rods. At one ends of the rotating rods, there are rotatably connected connecting seats. On one side of each connecting seat, there is fixedly connected a telescopic rod. There is a fixed connection between the rotating rod and the telescopic rod. At the end of the telescopic rod away from the connecting seat, there is fixedly connected a clamping piece. On the side of the grinding table, there are symmetrically fixedly installed receiving plates. On the tops of the receiving plates, there are fixedly installed telescopic cylinders. The output shafts of the telescopic cylinders are respectively fixedly connected to the bottoms of the lifting blocks.

[0009] Preferably, the scraping component includes two double-port hinge seats. The two double-port hinge seats are respectively fixedly installed on the tops of the connecting seats. At the shaft rods at both ends of the double-port hinge seats, there are hinged hinge rods. At the ends of the hinge rods away from the double-port hinge seats, there are hinged fixed rods. On the outer walls of the fixed rods, there are fixedly connected scraping plates. The bottoms of the scraping plates are in contact with the top of the grinding table.

[0010] Preferably, at both ends of the two fixed rods, there are rotatably connected inner sliders. At the bottoms of the inner sliders, there are slidably connected limit seats. The limit seats are all fixedly installed on the side of the grinding table. On both sides of the connecting seat, there are fixedly connected angle springs. The ends of the angle springs away from the connecting seat are fixedly connected to the bottoms of the hinge rods.

[0011] Preferably, the flipping component includes two second gears. The two second gears are respectively fixedly connected to one end of the rotating rod. Above one side of each second gear, there is a second rack plate. When the second gear rises, its teeth can be engaged with the teeth of the second rack plate. The number of teeth of the second rack plate is one-fourth of the number of teeth of the second gear.

[0012] Preferably, between the tops of the two fixed seats, there is a fixedly connected fixing frame. At the bottom of the fixing frame, there is a fixedly connected scraping plate. On one side of the second rack plate, there is a position-changing component for changing the position of the second rack plate.

[0013] Preferably, the transposition assembly includes two fixed sliding seats, which are respectively fixedly installed on the tops of the two receiving plates. A moving block is slidably connected inside the fixed sliding seat. One end of each moving block is rotatably connected to a movable rod. A third gear is fixedly connected to the outer wall of each movable rod. One end of each of the two movable rods is fixedly connected to the middle side of one of the two rack plates. The teeth of the third gear are all engaged with a third rack plate, and the third rack plate is fixedly connected to the bottom side of the fixed sliding seat.

[0014] Preferably, the number of teeth of the third rack plate is half of the number of teeth of the third gear. An electromagnet is fixedly installed on the inner wall surface of the fixed sliding seat, and the moving block is made of ferromagnetic material.

[0015] Preferably, a return spring is fixedly connected to the side of the moving block away from the electromagnet, and the end of the return spring away from the moving block is fixedly connected to the inner wall surface of the fixed sliding seat.

[0016] Preferably, inclined platforms are fixedly installed on both sides of the grinding table. A collection groove is formed in the middle top surface of the grinding table, and an inclined plate is arranged inside the collection groove.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. For the substrate pretreatment device for circuit board processing of the present invention, through the lifting assembly and the flipping assembly, the circuit board can be easily turned over, so as to realize the grinding of both sides of the circuit board. Through the scraping component, when the circuit board rises and flips, the debris on the surface of the grinding table can be processed, and when it descends, the debris that has fallen above the grinding table on the circuit board can be cleaned again, which helps to prevent the accumulation of debris, keep the grinding table clean, and reduce the residue of debris on the surface of the workbench after cleaning, avoiding scratches or damages to the surface of the circuit board caused by debris, which helps to ensure the quality and reliability of the circuit board during the processing process.

[0019] 2. For the substrate pretreatment device for circuit board processing of the present invention, when the circuit board is flipped 90 degrees by the flipping assembly, it will remain perpendicular to the horizontal plane. At this time, the lifting assembly continues to drive the circuit board to rise. When continuing to rise, one side of the circuit board will be attached to one side of the scraping plate, and the scraping plate can scrape off the debris on the surface of the circuit board. The scraped debris will scatter at any position on the upper surface of the grinding table, avoiding the situation where when some debris adheres to the surface of the circuit board, these debris cannot fall naturally under the action of gravity through the flipping method. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is the overall three-dimensional view of the present invention;

[0022] Figure 2It is a schematic structural diagram of the grinding table in the present invention;

[0023] Figure 3 It is a schematic structural diagram of the collection tank in the present invention;

[0024] Figure 4 It is a schematic structural diagram of the scraper in the present invention;

[0025] Figure 5 It is a schematic structural diagram of the connecting seat in the present invention;

[0026] Figure 6 It is a schematic structural diagram of the material scraping plate in the present invention;

[0027] Figure 7 It is a schematic structural diagram of the fixed seat in the present invention;

[0028] Figure 8 It is a schematic structural diagram of the fixed sliding seat in the present invention;

[0029] Figure 9 It is a schematic structural diagram of the grinding wheel in the present invention.

[0030] In the figure: 1, grinding table; 2, movable column; 3, electric slide rail; 4, electric slider; 5, fixed plate; 6, first gear; 7, grinding wheel; 8, first rack plate; 9, connecting seat; 10, double-port hinge seat; 11, hinge rod; 12, scraper; 13, fixed rod; 14, limit seat; 15, inner slider; 16, angle spring; 17, telescopic rod; 18, clamping member; 19, lifting block; 20, second gear; 21, rotating rod; 22, fixed seat; 23, telescopic cylinder; 24, receiving plate; 25, second rack plate; 26, movable rod; 27, third gear; 28, moving block; 29, third rack plate; 30, fixed sliding seat; 31, through electromagnet; 32, return spring; 33, collection tank; 34, inclined plate; 35, inclined table; 36, fixed frame; 37, material scraping plate. Detailed implementation manners

[0031] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0032] Such as Figures 1 to 9As shown in the figure, the present invention provides a technical solution: a substrate pretreatment device for circuit board processing, including a grinding table 1. On one side of the grinding table 1, there is a movable column 2. On both sides of the movable column 2, there are fixedly connected electric slide rails 3. The inner walls of the electric slide rails 3 are slidably connected with electric sliders 4. At the bottoms of the electric sliders 4, there are fixedly connected fixing plates 5. Between the two fixing plates 5, there is a rotatably connected grinding wheel 7. On the outer wall of the shaft rod of the grinding wheel 7, there are symmetrically fixedly connected first gears 6. The teeth of the first gears 6 are all engaged with a first rack plate 8. The first rack plate 8 is fixedly installed on one side of the electric slide rail 3. Above the grinding table 1, there is a circuit board. On the side of the circuit board, there is a lifting component and a flipping component for driving the circuit board to turn over. Above the grinding table 1, there is a scraping component for processing debris.

[0033] During operation: Place the circuit board to be processed and ground above the grinding table 1. When grinding the circuit board, move the movable column 2 to one side of the grinding table 1. Pass an electric current through the electric slide rail 3 to control the electric slider 4 to slide along the inner wall of the electric slide rail 3. During the movement of the electric slide rail 3, the grinding wheel 7 will be driven to move through the fixing plate 5. During the movement of the grinding wheel 7, its outer wall will be in contact with the upper surface of the circuit board. And during the movement of the grinding wheel 7, the teeth of the first gear 6 connected to its shaft will mesh with the teeth of the first rack plate 8. Therefore, when the grinding wheel 7 moves along the surface of the circuit board, it will rotate, thereby processing the burrs on the surface of the circuit board. After processing the debris, move the entire grinding component away from above the grinding table 1 by moving the movable column 2. During the burr treatment process, debris will be generated. A small part of the debris will fall on the top surface of the grinding table 1, and most of the debris will fall on the upper surface of the circuit board. Through the lifting component, the circuit board can be driven to rise. During the rising process of the circuit board, it will be flipped under the action of the flipping component. During the flipping process of the circuit board, the debris on its surface will automatically fall off. After the debris falls off, it will fall to any position on the top of the grinding table 1. Through the set scraping component, while the lifting component drives the circuit board to rise, the scraping component can move. First, clean the debris on the surface of the grinding table 1 due to grinding. After the circuit board is turned over, the lifting component drives the circuit board to descend. During the descending process, the scraping component continues to move and then cleans the debris that has fallen on the upper surface of the grinding table 1 during the turning process of the circuit board. When the circuit board is turned over and descends to the surface of the grinding table 1, then move the movable column 2 to grind the second side of the circuit board. After grinding, rise and turn it over again for debris treatment. After completion, take out the circuit board and prepare for the next round of work. In the above embodiment, through the lifting component and the flipping component, the circuit board can be easily turned over, thereby realizing the grinding of both sides of the circuit board. Through the scraping component, when the circuit board rises and flips, the debris on the surface of the grinding table 1 can be processed, and when it descends, the debris that has fallen on the upper part of the grinding table 1 from the circuit board can be cleaned again, which helps to prevent debris accumulation and keep the grinding table 1 clean. The residual debris on the surface of the cleaned workbench is reduced, avoiding scratches or damage to the surface of the circuit board caused by the debris, which helps to ensure the quality and reliability of the circuit board during the processing process.

[0034] As Figures 6 to 7As shown in the figure, the lifting assembly includes two fixed seats 22. The inner walls of the fixed seats 22 are both slidably connected with lifting blocks 19. The inner walls of the lifting blocks 19 are both rotatably connected with rotating rods 21. One ends of the rotating rods 21 are both rotatably connected with connecting seats 9. One sides of the connecting seats 9 are both fixedly connected with telescopic rods 17. The rotating rods 21 are fixedly connected with the telescopic rods 17. The ends of the telescopic rods 17 far away from the connecting seats 9 are fixedly connected with clamping members 18. The sides of the grinding table 1 are symmetrically and fixedly installed with receiving plates 24. The tops of the receiving plates 24 are both fixedly installed with telescopic cylinders 23. The output shafts of the telescopic cylinders 23 are respectively fixedly connected with the bottoms of the lifting blocks 19.

[0035] During operation: When one side of the circuit board is ground, the telescopic rod 17 drives the clamping member 18 to approach the outer wall of the circuit board to clamp both sides of the circuit board. Then the telescopic cylinder 23 is started, and its output shaft will drive the lifting block 19 to slide upward along the inner wall of the fixed seat 22. During the upward sliding of the lifting block 19, it will drive the connecting seat 9 to move upward through the rotating rod 21. The connecting seat 9 will drive the circuit board to move upward through the telescopic rod 17 and the clamping member 18. After the circuit board moves upward to a position where it can be flipped, it will be flipped under the action of the flipping assembly, thus realizing the effect of flipping the circuit board for grinding both sides.

[0036] As Figures 3 to 5 shown in the figure, the scraping component includes two double-port hinge seats 10. The two double-port hinge seats 10 are respectively fixedly installed on the tops of the connecting seats 9. The shaft rods at both ends of the double-port hinge seats 10 are both hinged with hinge rods 11. The ends of the hinge rods 11 far away from the double-port hinge seats 10 are both hinged with fixed rods 13. The outer walls of the fixed rods 13 are both fixedly connected with scraping plates 12. The bottoms of the scraping plates 12 are in contact with the top of the grinding table 1.

[0037] During operation: When the lifting assembly drives the circuit board to rise and flip, it will drive the double-port hinge seats 10 to rise. During the rising of the double-port hinge seats 10, the hinge rods 11 will rotate hingedly with the double-port hinge seats 10 at the closer ends. When the hinge rods 11 rotate hingedly, they will pull the scraping plates 12 to move downward along the surface of the grinding table 1. During the movement of the scraping plates 12, they will first centrally collect a small amount of debris on the surface of the grinding table 1. And when the circuit board rises and flips, the debris on its surface will fall on the surface of the grinding table 1. At this time, when the lifting assembly drives the connecting seat 9 to descend, it can make the scraping plates 12 slide reversely and reset along both sides of the grinding table 1. During the reset, the scraping plates 12 push the debris scattered on the surface of the grinding table 1 to both sides of the grinding table 1 again, causing the debris to leave the surface of the grinding table 1, thus completing the cleaning of the debris and avoiding scratches or damages to the surface of the circuit board caused by the debris when the circuit board descends and resets for grinding the second side.

[0038] As Figures 4 to 5As shown in the figure, both ends of the two fixed rods 13 are rotatably connected with inner sliders 15. The bottoms of the inner sliders 15 are all slidably connected with limit seats 14. The limit seats 14 are all fixedly installed on the side surface of the grinding table 1. Angle springs 16 are fixedly connected to both sides of the connecting seat 9. The ends of the angle springs 16 far away from the connecting seat 9 are fixedly connected to the bottom of the hinge rod 11.

[0039] During operation: When the connecting seat 9 rises and pulls the scraper 12 to move through the hinge rod 11, through the arranged limit seats 14 and inner sliders 15, when the two scrapers 12 are pulled by the hinge rod 11 and move towards the middle of the grinding table 1, the bottom of the scraper 12 always fits on the top of the grinding table 1, so that all the debris can be gathered at the middle position of the grinding table 1 for processing during the movement of the scraper 12; through the arranged angle springs 16, when the connecting seat 9 rises and falls, the hinge rod 11 will squeeze or stretch the angle springs 16 to deform when it is hinged and rotated, improving the stability and smoothness of the connecting seat 9 driving the scraper 12 to move through the hinge rod 11 during the lifting and lowering process.

[0040] As Figures 6 to 7 shown in the figure, the flipping assembly includes two second gears 20. The two second gears 20 are respectively fixedly connected to one end of the rotating rod 21. On one side above the second gears 20, there are second rack plates 25 arranged. When the second gears 20 rise, their teeth can mesh with the teeth of the second rack plates 25. The number of teeth of the second rack plates 25 is one-fourth of the number of teeth of the second gears 20.

[0041] During operation: When the lifting block 19 drives the circuit board to move upward along the inner wall of the fixed seat 22, when the circuit board rises to a large enough position, the second gear 20 will mesh with the teeth of the second rack plate 25. And because the number of teeth of the second rack plate 25 is one-fourth of the number of teeth of the second gear 20, the second gear 20 will rotate 90 degrees. The second gear 20 will drive the telescopic rod 17 to rotate through the rotating rod 21. The telescopic rod 17 drives the circuit board to rotate 90 degrees through the clamping member 18. After the circuit board rotates 90 degrees, it will first maintain a state perpendicular to the horizontal plane. At this time, a part of the debris will naturally fall onto the surface of the grinding table 1 under the action of gravity.

[0042] As Figure 2 and Figure 6 shown in the figure, a fixed frame 36 is fixedly connected between the tops of the two fixed seats 22. A scraping plate 37 is fixedly connected to the bottom of the fixed frame 36. A position-changing assembly is arranged on one side of the second rack plate 25. The position-changing assembly is used to change the position of the second rack plate 25.

[0043] During operation: When the circuit board is flipped 90 degrees by the flipping component, it will remain perpendicular to the horizontal plane. At this time, the lifting component continues to drive the circuit board to rise. When continuing to rise, one side of the circuit board will be in contact with one side of the scraping plate 37. The scraping plate 37 can scrape off the debris on the surface of the circuit board. The scraped debris will fall at any position on the upper surface of the grinding table 1, preventing some debris from adhering to the surface of the circuit board. By means of flipping, these debris cannot naturally fall under the action of gravity; and through the transposition component to transpose the second rack plate 25, when the circuit board descends, the second gear 20 continues to mesh with the second rack plate 25 to complete the final turning process.

[0044] As Figures 7 to 8 shown, the transposition component includes two fixed sliding seats 30, which are respectively fixedly installed on the tops of the two receiving plates 24. A moving block 28 is slidably connected inside the fixed sliding seat 30. One end of the moving block 28 is rotatably connected to a movable rod 26. A third gear 27 is fixedly connected to the outer wall of the movable rod 26. One end of the two movable rods 26 is respectively fixedly connected to the middle side of the two second rack plates 25. The teeth of the third gear 27 are all meshed with a third rack plate 29, and the third rack plate 29 is fixedly connected to the bottom side of the fixed sliding seat 30.

[0045] During operation: After the second gear 20 meshes with the second rack plate 25 to flip the circuit board 90 degrees, during the continuous rising process of the circuit board, the moving block 28 is driven to slide along the inner wall of the fixed sliding seat 30. During the sliding process, the teeth of the third gear 27 will mesh with the teeth of the third rack plate 29, causing the third gear 27 to rotate. The third gear 27 drives the second rack plate 25 to rotate through the movable rod 26. The second rack plate 25 moves along with the moving block 28 and rotates itself, so that the second rack plate 25 moves to the other side of the second gear 20 and keeps the teeth aligned with the teeth of the second gear 20, so that the second gear 20 can still mesh with the teeth of the second rack plate 25 when descending. During this meshing, the circuit board continues to rotate 90 degrees, in the same direction as the first rotation. When the circuit board returns to the surface of the grinding table 1, it just rotates 180 degrees, thus completing the final turning process.

[0046] As Figures 7 to 8 shown, the number of teeth of the third rack plate 29 is half of the number of teeth of the third gear 27. An electromagnet 31 is fixedly installed on the inner wall surface of the fixed sliding seat 30, and the moving block 28 is made of ferromagnetic material.

[0047] During operation: The electromagnet 31 is energized, generating a suction force that causes the moving block 28 made of ferromagnetic material to move closer to it. When the moving block 28 generates the suction force, it drives the third gear 27 and the second rack plate 25 to move. Since the number of teeth of the third rack plate 29 is half that of the third gear 27, the third gear 27 rotates 180 degrees during the movement, so that the second rack plate 25 also rotates 180 degrees after moving. The teeth of the rotated second rack plate 25 can just be aligned with the teeth of the second gear 20, so that both can mesh when descending.

[0048] As Figures 7 to 8 shown, a return spring 32 is fixedly connected to the side of the moving block 28 away from the electromagnet 31, and the end of the return spring 32 away from the moving block 28 is fixedly connected to the inner wall surface of the fixed slide 30.

[0049] During operation: When the suction force of the electromagnet 31 moves the moving block 28 closer to it, the return spring 32 will be stretched and deformed. When the circuit board completes the first flip and returns to the top of the grinding table 1, the electromagnet 31 is powered off. At this time, the moving block 28 will be reset under the action of the return spring 32. During the reset process, the third gear 27 can still mesh with the third rack plate 29, causing the second rack plate 25 to reset, facilitating the preparation for the subsequent circuit board flipping work.

[0050] As Figures 2 to 3 shown, inclined platforms 35 are fixedly installed on both sides of the grinding table 1, and a collection groove 33 is formed on the top surface of the middle part of the grinding table 1, and an inclined plate 34 is arranged inside the collection groove 33.

[0051] During operation: Through the provided collection groove 33, when the two scraping plates 12 move closer to the middle of the grinding table 1, a small amount of debris on the surface of the grinding table 1 can be pushed into the collection groove 33. The provided inclined plate 34 supports the bottom of the grinding table 1, enhancing the stability during the grinding process. When the two scraping plates 12 move towards the outside of the grinding table 1, the debris scattered on the surface of the grinding table 1 can be pushed onto the inclined platforms 35, no longer affecting the grinding work on the surface of the grinding table 1.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A substrate pretreatment device for circuit board processing, comprising a grinding table, characterized in that: A movable column is provided on one side of the grinding table, and electric slide rails are fixedly connected on both sides of the movable column, and electric sliders are slidably connected to the inner walls of the electric slide rails, and fixed plates are fixedly connected to the bottoms of the electric sliders, and a grinding wheel is rotatably connected between the two fixed plates, and a gear one is symmetrically fixedly connected to the outer wall of the shaft of the grinding wheel, and the teeth of the gear one are meshed with a rack plate one, and the rack plate one is fixedly installed on one side of the electric slide rail, and a circuit board is provided directly above the grinding table, and a lifting component and a flipping component for driving the circuit board to turn over are provided on the side of the circuit board, and a scraping component for processing debris is provided above the grinding table.

2. A substrate pretreatment device for circuit board processing according to claim 1, characterized in that: The lifting assembly includes two fixed seats, the inner walls of the fixed seats are slidably connected to the lifting blocks, the inner walls of the lifting blocks are rotatably connected to the rotating rods, one end of the rotating rods is rotatably connected to the connecting seats, one side of the connecting seats is fixedly connected to the telescopic rods, the rotating rods and the telescopic rods are fixedly connected, the end of the telescopic rods away from the connecting seats is fixedly connected to the clamping parts, the side surfaces of the grinding table are symmetrically fixedly installed with receiving plates, the tops of the receiving plates are fixedly installed with telescopic cylinders, and the output shafts of the telescopic cylinders are respectively fixedly connected to the bottoms of the lifting blocks.

3. A substrate pretreatment device for circuit board processing according to claim 2, characterized in that: The scraper assembly includes two double-mouth articulated seats, which are respectively fixedly installed on the top of the connecting seat. The two end shafts of the double-mouth articulated seats are hinged with articulated rods, and the ends of the articulated rods away from the double-mouth articulated seats are hinged with fixed rods. The outer walls of the fixed rods are fixedly connected with scrapers, and the bottoms of the scrapers are in contact with the top of the grinding table.

4. The substrate pretreatment device for circuit board processing according to claim 3, characterized in that: Both ends of the two fixed rods are rotatably connected with inner sliders, the bottoms of the inner sliders are slidably connected with limit seats, the limit seats are fixedly installed on the sides of the grinding table, and both sides of the connecting seat are fixedly connected with angle springs, and the end of the angle spring away from the connecting seat is fixedly connected to the bottom of the hinged rod.

5. The substrate pretreatment device for circuit board processing according to claim 4, characterized in that: The flip assembly includes two gears 2, which are respectively fixedly connected to one end of the rotating rod. A rack plate 2 is provided on one side above the gear 2. When the gear 2 rises, its teeth can engage with the teeth of the rack plate 2. The number of teeth of the rack plate 2 is one-fourth of the number of teeth of the gear 2.

6. A substrate pretreatment device for circuit board processing according to claim 5, characterized in that: A fixing frame is fixedly connected between the tops of the two fixing seats, a scraper plate is fixedly connected to the bottom of the fixing frame, and a transposition component is arranged on one side of the rack plate 2, and the transposition component is used to transpose the position of the rack plate 2.

7. A substrate pretreatment device for circuit board processing according to claim 6, characterized in that: The shifting assembly includes two fixed slides, which are respectively fixedly installed on the top of the two receiving plates. The fixed slides are internally slidably connected with moving blocks, one end of the moving blocks are rotatably connected with movable rods, the outer walls of the movable rods are fixedly connected with gear three, one end of the two movable rods are respectively fixedly connected to one side of the middle part of the two rack plates two, the teeth of the gear three are meshed with rack plates three, and the rack plate three is fixedly connected to the bottom side of the fixed slide.

8. The substrate pretreatment device for circuit board processing according to claim 7, characterized in that: The number of teeth of rack plate three is half of the number of teeth of gear three, an electromagnet is fixedly installed on the inner wall surface of the fixed slide, and the moving block is made of ferrous material.

9. A substrate pretreatment device for circuit board processing according to claim 8, characterized in that: A return spring is fixedly connected to one side of the moving block away from the electromagnet, and one end of the return spring away from the moving block is fixedly connected to the inner wall surface of the fixed slide seat.

10. The substrate pretreatment device for circuit board processing according to claim 9, characterized in that: Inclined tables are fixedly installed on both sides of the grinding table, a collecting groove is opened on the middle top surface of the grinding table, and an inclined plate is arranged inside the collecting groove.

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