A flipping device for circuit board processing

Abstract

This invention relates to the field of circuit board processing technology, specifically to a circuit board processing flipping device, comprising a support, a flipping mechanism for flipping circuit boards mounted on the support, the flipping mechanism including a movable seat that moves on the support, a flipping box rotatably mounted on the movable seat, a pre-tightening mechanism for maintaining stability during the flipping process of the circuit board mounted on the flipping box, a rectangular connecting tube connected to the flipping box, and a suction cup gripper for adsorbing and fixing the edge of the circuit board connected to the connecting tube; the purpose of this invention is to provide a circuit board processing flipping device that uses suction cup grippers to stably adsorb and then automatically flips the circuit board, and then returns it to its initial position, thereby ensuring that the circuit board remains stable and does not shift during the flipping process, and maintains its initial position when reset to the conveyor track, making subsequent conveying work more stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board processing, in particular to a turnover device for circuit board processing. BACKGROUND

[0002] The name of the circuit board has: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high-frequency board, thick copper plate, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed (copper etching technology) circuit board, etc.; The circuit board miniaturizes the circuit, and is intuitive. It plays an important role in the batch production of fixed circuits and the optimization of electric appliance layout.

[0003] At present, the circuit board needs to be turned over in the process of circuit board processing. However, in the process of turning over the circuit board by the current circuit board turnover device, the circuit board is easy to deviate due to its own gravity, and then the position of the circuit board changes after turning over, and even the circuit board cannot be transferred subsequently, which affects the processing of the circuit board. SUMMARY

[0004] The purpose of the present application is to provide a turnover device for circuit board processing, which uses a suction cup clamp hand to stabilize adsorption and then automatically turns over, and then returns to the initial position, so that the circuit board can always remain stable and not deviate during the turning over process, and the initial position can be kept unchanged when returning to the conveying track, thereby making the subsequent conveying work more stable.

[0005] In order to achieve the above object, the present application provides the following technical scheme: A turnover device for circuit board processing, comprising a support, a turnover mechanism for turning over the circuit board is arranged on the support, the turnover mechanism comprises a moving seat moving on the support, a turnover box is rotatably arranged on the moving seat, a pre-tightening mechanism for assisting the circuit board to turn over and keeping stable during the process is arranged on the turnover box, a rectangular connecting pipe is communicated with the turnover box, a suction disc clamp hand for adsorbing and fixing the edge of the circuit board is communicated with the connecting pipe; a cleaning mechanism for stably clamping the circuit board on one side of the support in cooperation with the suction disc clamp hand; the cleaning mechanism comprises a collecting box located on one side of the support, an air pump is arranged in the collecting box, an air cushion located in the collecting box is mounted on the air outlet end of the air pump, an air outlet pipe is communicated with the air outlet end of the air pump, an air inlet pipe is mounted on the air inlet end of the air pump, a top rod is mounted in the air outlet pipe and the air inlet pipe, a transition pipe is communicated with the connecting pipe, and a sealing rod is slidably arranged in the transition pipe; the air pump sends gas to the inside of the air cushion to make it expand, when the circuit board is transported to a certain position by the conveying track, the turnover box approaches the circuit board on the support through the moving seat, the connecting pipe and the suction disc clamp hand move synchronously driven by the turnover box, when the transition pipe on the connecting pipe moves to a certain position and contacts the air inlet pipe, the top rod in the air inlet pipe extends into the transition pipe and lifts the sealing rod, the air inlet pipe communicates with the connecting pipe to perform air extraction on the suction disc clamp hand, so that the suction disc clamp hand is stably adsorbed and connected with the circuit board; the pre-tightening mechanism comprises a sealing block sliding in the turnover box, a second magnetic block is arranged on one side of the sealing block, a first magnetic block is arranged on the outside of the turnover box and slides along the outside of the turnover box, and the first magnetic block moves by magnetic adsorption and connection with the second magnetic block when the first magnetic block slides to drive the sealing block to move; when the turnover box drives the circuit board to turn over, the first magnetic block slides along the outside of the turnover box due to its own gravity, the first magnetic block drives the second magnetic block to move by magnetic force, the second magnetic block drives the sealing block to move in the turnover box, and the sealing block further extracts the gas in the connecting pipe by using the turnover box during the movement of the sealing block.

[0006] Preferably, a motor a is fixed on the support, a threaded shaft is fixedly mounted on the output end of the motor a, the threaded shaft rotates on the support, and the moving seat is connected with the outside of the threaded shaft through a ball nut pair in a threaded manner.

[0007] Preferably, a motor b for driving the turnover box to turn over is mounted on one side of the moving seat, and the output end of the motor b is connected with a power shaft.

[0008] Preferably, the connecting pipe is two groups respectively communicated with two ends of the turnover box, and the suction disc clamp hand is four and arranged on the two groups of connecting pipes.

[0009] Preferably, one end of each of the two groups of connecting pipes is communicated with the transition pipe.

[0010] Preferably, an air jet frame is fixed to the outer side of the air cushion, and an air jet nozzle is provided at the edge of the air jet frame.

[0011] Preferably, the outer side of the flip box has a slider for mounting the first magnetic block, and rollers are mounted at both the upper and lower ends of the slider.

[0012] Preferably, the flipping box has a limiting groove for the movement of the rollers.

[0013] Preferably, a compression spring is fixed inside the flip box, and one end of the compression spring is fixedly connected to the sealing block.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention utilizes a suction cup to stably adsorb the circuit board and then automatically flip it over before returning it to its initial position. This ensures that the circuit board remains stable and does not shift during the flipping process. When reset to the conveyor track, it maintains its initial position, thus making its subsequent conveying operation more stable.

[0016] 2. During the process of the flipping box moving the suction cup gripper downwards towards the circuit board, the air pump is activated. The air outlet of the air pump inflates the air cushion. Since the air cushion is located below the circuit board, it can play a preventive role during the flipping or resetting of the circuit board. If the circuit board falls from the conveyor track or suction cup gripper during the flipping process, the air cushion can provide a cushioning effect, preventing the circuit board from falling directly to the ground, causing damage and increasing costs.

[0017] 3. This invention utilizes a suction tube connected to a top rod to evacuate air from inside the suction cup gripper, making the suction cup gripper adhere more firmly to the circuit board. Thus, while the suction cup gripper and the circuit board are adhered together, the air evacuation tube further improves the stability of the connection between the suction cup gripper and the circuit board, and enhances the stability of the circuit board flipping operation. Attached Figure Description

[0018] Figure 1 This is one of the overall structural schematic diagrams of the present invention;

[0019] Figure 2 This is a second schematic diagram of the overall structure of the present invention;

[0020] Figure 3 This is a partial cross-sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of a portion of the cleaning mechanism of the present invention;

[0022] Figure 5This is a partial cross-sectional view of the pre-tightening mechanism of the present invention;

[0023] Figure 6 This is a partial cross-sectional view of the cleaning mechanism of the present invention;

[0024] Figure 7 This is a second cross-sectional view of the cleaning mechanism of the present invention.

[0025] In the diagram: 1. Bracket; 2. Tilting mechanism; 21. Motor a; 22. Threaded shaft; 23. Power shaft; 24. Moving seat; 25. Tilting box; 26. Suction cup gripper; 28. Connecting pipe; 3. Cleaning mechanism; 31. Collection box; 32. Air pump; 33. Air cushion; 34. Air outlet pipe; 35. Air extraction pipe; 36. Air jet frame; 37. Transition pipe; 38. Top rod; 39. Sealing rod; 4. Pre-tightening mechanism; 41. Sealing block; 42. Slider; 43. First magnetic block; 44. Roller; 45. Limiting groove; 46. Second magnetic block; 47. Compression spring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] This invention provides a circuit board processing flipping device, including a support 1, a flipping mechanism 2 for flipping circuit boards mounted on the support 1, a movable seat 24 that moves on the support 1, a flipping box 25 rotatably mounted on the movable seat 24, a pre-tightening mechanism 4 for maintaining stability during the flipping process of the circuit board mounted on the flipping box 25, a rectangular connecting tube 28 connected to the flipping box 25, and a suction cup gripper 26 for adsorbing and fixing the edge of the circuit board connected to the connecting tube 28; a cleaning machine for stably holding the circuit board with the suction cup gripper 26 on one side of the support 1. Structure 3; a motor a21 is fixed on the bracket 1, and a threaded shaft 22 is fixedly installed on the output end of the motor a21. The threaded shaft 22 rotates on the bracket 1, and the movable seat 24 is connected to the outer thread of the threaded shaft 22 through a ball nut pair. A motor b that drives the flip box 25 to flip is installed on one side of the movable seat 24. The output end of the motor b is connected to the power shaft 23. There are two sets of connecting pipes 28 that are respectively connected to both ends of the flip box 25. Four suction cup grippers 26 are distributed on the two sets of connecting pipes 28. One end of each set of connecting pipes 28 is connected to the transition pipe 37.

[0028] See Figures 1 to 3As shown, after the circuit board is transported to a certain position via the conveyor track, motor a21 is started. The output end of motor a21 drives the threaded shaft 22 to rotate. Since the moving seat 24 is connected to the outer thread of the threaded shaft 22 through a ball nut pair, the moving seat 24 moves downward along the threaded shaft 22 during the rotation of the threaded shaft 22. At the same time, the moving seat 24 drives the flipping box 25 to move. The flipping box 25 drives the suction cup gripper 26 to move through the connecting pipe 28 until the suction cup gripper 26 moves to contact and adsorb the circuit board. This allows the circuit board to be clamped. Then, the threaded shaft 22 is controlled to reverse, and the moving seat 24 drives the flipping box 25 to move in the opposite direction. The circuit board is moved upward by the suction cup gripper 26, and then the motor b is started. The output end of the motor b drives the power shaft 23 to rotate, and the power shaft 23 drives the flipping box 25 to rotate. The flipping box 25 flips the circuit board by the suction cup gripper 26. After the circuit board is flipped, the threaded shaft 22 drives the moving seat 24 to move downward again, so that the circuit board driven by the flipping box 25 returns to the initial position. In this way, the flipping work of the circuit board can be completed automatically, saving manpower and improving the processing efficiency of the circuit board. In addition, the suction cup gripper 26 is used to attach to the circuit board, which not only makes the clamping more stable, but also avoids damage to the circuit board.

[0029] The cleaning mechanism 3 includes a collection box 31 located on one side of the support 1. An air pump 32 is installed inside the collection box 31. An air cushion 33 located inside the collection box 31 is installed at the air outlet of the air pump 32. An air outlet pipe 34 is connected to the air outlet of the air pump 32, and an air extraction pipe 35 is installed at the air extraction end of the air pump 32. A push rod 38 is installed inside both the air outlet pipe 34 and the air extraction pipe 35. A transition pipe 37 is connected to the connecting pipe 28, and a sealing rod 39 slides inside the transition pipe 37. The air outlet of the air pump 32 delivers gas to the air cushion 33, causing it to expand. A conveying track transports the circuit board to a designated location. When in place, the flip box 25 moves closer to the circuit board on the bracket 1 via the movable seat 24. The flip box 25 drives the connecting pipe 28 and the suction cup gripper 26 to move synchronously. When the transition pipe 37 on the connecting pipe 28 moves to a certain position, it contacts the suction pipe 35. At this time, the push rod 38 inside the suction pipe 35 extends into the transition pipe 37 and pushes up the sealing rod 39. The suction pipe 35 evacuates the suction cup gripper 26 through the connection with the connecting pipe 28, so that the suction cup gripper 26 is stably adsorbed and connected to the circuit board. An air jet frame 36 is fixed on the outside of the air cushion 33, and an air jet nozzle is opened at the edge of the air jet frame 36.

[0030] See Figures 3 to 6As shown, during the process of the flip box 25 moving the suction cup gripper 26 downwards and approaching the circuit board, the air pump 32 is activated. The air outlet of the air pump 32 inflates the air cushion 33, causing the air cushion 33 to expand. Since the air cushion 33 is located below the circuit board, it can play a preventive role during the flipping or resetting of the circuit board. If the circuit board falls from the conveyor track or suction cup gripper 26 during the flipping process, the air cushion 33 can play a cushioning role, preventing the circuit board from falling directly to the ground, causing damage and increasing costs.

[0031] When the flip box 25 drives the suction cup gripper 26 to a certain position, the push rod 38 inside one end of the suction pipe 35 will extend into the interior of the transition tube 37, and the push rod 38 will lift the sealing rod 39 inside the transition tube 37. When the suction cup gripper 26 contacts the circuit board, the push rod 38 will lift the sealing rod 39 to the top of the transition tube 37, at which point the transition tube 37 will be connected to the two sets of push rods 38. Since one end of the suction pipe 35 also gradually extends into the interior of the transition tube 37 and connects with the push rod 38, and since the suction pipe 35 is connected to the exhaust end of the air pump 32, by using one end of the suction pipe 35 to connect with the push rod 38, air can be extracted from the inside of the suction cup gripper 26, making the suction cup gripper 26 adhere more firmly to the circuit board. Thus, while the suction cup gripper 26 and the circuit board are adsorbed together, the air extraction of the inside of the suction cup gripper 26 by the suction pipe 35 can further improve the stability of the connection between the suction cup gripper 26 and the circuit board, and improve the stability of the circuit board flipping operation.

[0032] Additionally, it should be noted that the suction pipe 35 is designed in an L-shape and can draw air from both ends. One end of the suction pipe 35 is pressure-reducing to prevent excessive suction pressure during the connection between the suction end of the suction pipe 35 and the connecting pipe 28, which could cause the suction cup gripper 26 to adhere excessively to the circuit board and affect the quality of the circuit board.

[0033] As the flip box 25 moves the circuit board upward through the suction cup gripper 26, the push rod 38 inside one end of the suction pipe 35 gradually moves out of the interior of the transition pipe 37. At this time, the sealing rod 39 inside the transition pipe 37 gradually resets. The reset of the sealing rod 39 can seal the transition pipe 37 and the connecting pipe 28 again, thereby maintaining the sealing between the connecting pipe 28 and the suction cup gripper 26 and maintaining the adsorption stability between the suction cup gripper 26 and the circuit board.

[0034] After the rotating box 25 moves the circuit board upward to a certain position via the suction cup gripper 26, motor b is started. Motor b drives the rotating box 25 to rotate via the power shaft 23. The rotating box 25 then drives the circuit board to rotate via the suction cup gripper 26. After the circuit board completes its rotation, the rotating box 25 again drives the circuit board downward via the suction cup gripper 26. During the process of the circuit board moving onto the conveyor track, since the transition tube 37 is not on the axis of the power shaft 23, after the transition tube 37 rotates with the circuit board, it is no longer in its original position. At this time, the transition tube 37 will be located above the air outlet pipe 34. When the transition tube 37 moves downward with the circuit board, the air outlet pipe 34... The top rod 38 of the part will extend into the transition tube 37 and lift the sealing rod 39 until the air outlet pipe 34 extends into the transition tube 37 and connects the air outlet pipe 34 to the connecting pipe 28 through the transition tube 37. Since the air outlet pipe 34 is connected to the air outlet end of the air pump 32, the air outlet pipe 34 will supply air to the inside of the connecting pipe 28, thereby causing the suction cup gripper 26 to lose its adsorption connection with the circuit board. This will automatically disconnect the circuit board, allowing the circuit board to automatically flip and reset to the conveyor track. In addition, one end of the air outlet pipe 34 is also depressurized to reduce its air pressure, which will allow the suction cup gripper 26 to slowly lose its adsorption connection with the circuit board.

[0035] The suction cup gripper 26 stably adsorbs the circuit board and then automatically flips it over before returning it to its initial position. This ensures that the circuit board remains stable and does not shift during the flipping process. When it is reset to the conveyor track, it can maintain its initial position, thus making its subsequent conveying work more stable.

[0036] During the operation of the air pump 32, the air outlet of the air pump 32 expands the air cushion 33 while continuously inflating the inside of the air cushion 33. The gas inside the air cushion 33 will be ejected through the air nozzle on the air jet frame 36. Since the air nozzle is located below the circuit board, the circuit board can be continuously cleaned to avoid the dust on the circuit board affecting subsequent processing.

[0037] The pre-tightening mechanism 4 includes a sealing block 41 that slides inside the flip box 25. A second magnetic block 46 is provided on one side of the sealing block 41, and a first magnetic block 43 that slides along the outside of the flip box 25 is provided on the outside of the flip box 25. When the first magnetic block 43 slides, it drives the sealing block 41 to move by magnetically adsorbing the second magnetic block 46. When the flip box 25 drives the circuit board to flip, the first magnetic block 43 slides along the outside of the flip box 25 due to its own weight, and the first magnetic block 43 drives the second magnetic block 46 to move by magnetic attraction. The second magnetic block 46 drives the sealing block 41 to move inside the flip box 25. During the movement of the sealing block 41, the flip box 25 will further extract the gas inside the connecting pipe 28. A slider 42 for installing the first magnetic block 43 is slidable on the outside of the flip box 25. Rollers 44 are installed at both the upper and lower ends of the slider 42. A limiting groove 45 for the movement of the rollers 44 is opened on the flip box 25. A compression spring 47 is fixed inside the flip box 25. One end of the compression spring 47 is fixedly connected to the sealing block 41.

[0038] See Figures 4 to 7 As shown, during the process of the circuit board being flipped by the flip box 25, the circuit board and the flip box 25 deflect. At this time, the slider 42 and the first magnetic block 43 on the outside of the flip box 25 will move along the limiting groove 45 via the roller 44 due to their own gravity. Since the first magnetic block 43 and the second magnetic block 46 are magnetically connected, the slider 42 moves while the second magnetic block 46 moves using magnetic force. While the second magnetic block 46 moves, it drives the sealing block 41 to move inside the flip box 25. At the same time, the sealing block 41 compresses the spring 47. See reference. Figure 4 As shown, for example, when the flip box 25 drives the circuit board to flip counterclockwise, the sealing block 41 will move along the flipping direction of the circuit board. Simultaneously, the movement of the sealing block 41 will utilize the flip box 25 to extract a certain amount of gas from the connecting pipe 28. This increases the suction force between the right-side suction cup gripper 26 and the circuit board during the flipping process, providing a pre-tightening effect. This prevents the left and right suction cup grippers 26 from being on different horizontal planes during the flipping process, which could lead to different suction forces on the circuit board and potentially cause it to shift. The magnetic attraction of the first magnetic block 43 and the second magnetic block 46 is much greater than the squeezing force of the sealing block 41 on the compression spring 47. Therefore, as the slider 42 moves along the outside of the flip box 25, the magnetic attraction of the first magnetic block 43 and the second magnetic block 46 is sufficient to drive the sealing block 41 to squeeze the compression spring 47. In addition, if the slider 42 does not move along the outside of the flip box 25 during the flipping process of the circuit board, it can be concluded that the suction cup gripper 26 has sufficient adsorption force on the circuit board, and the sealing block 41 can no longer use the flip box 25 to extract the gas inside the connecting pipe 28.

[0039] Working principle: After the circuit board is transported to a certain position via the conveyor track, motor a21 is started. The output end of motor a21 drives the threaded shaft 22 to rotate. Since the moving seat 24 is connected to the outer thread of the threaded shaft 22 through a ball nut pair, the moving seat 24 moves downward along the threaded shaft 22 during the rotation of the threaded shaft 22. At the same time, the moving seat 24 drives the flipping box 25 to move. The flipping box 25 drives the suction cup gripper 26 to move through the connecting pipe 28 until the suction cup gripper 26 moves to contact and adsorb the circuit board. As the flipping box 25 drives the suction cup gripper 26 downward towards the circuit board, the air pump 32 is started. The air outlet of the air pump 32 inflates the air cushion 33, causing the air cushion 33 to expand. Since the air cushion 33 is located below the circuit board, it can play a preventive role during the flipping or resetting of the circuit board. The flipping box 25 drives the suction cup gripper 26 to move. When the suction tube 35 reaches a certain position, the push rod 38 inside one end of the suction tube 35 will extend into the interior of the transition tube 37, and the push rod 38 will lift the sealing rod 39 inside the transition tube 37. When the suction cup gripper 26 contacts the circuit board, the push rod 38 will lift the sealing rod 39 to the top of the transition tube 37. At this time, the transition tube 37 will be connected to the two sets of push rods 38. Since one end of the suction tube 35 also gradually extends into the interior of the transition tube 37 and connects with the push rod 38, and since the suction tube 35 is connected to the exhaust end of the air pump 32, by connecting one end of the suction tube 35 with the push rod 38, air can be extracted from the interior of the suction cup gripper 26, making the suction cup gripper 26 adhere more firmly to the circuit board. Thus, while the suction cup gripper 26 and the circuit board are adsorbed together, the suction tube 35 can be used to extract air from the interior of the suction cup gripper 26, which can further improve the stability of the connection between the suction cup gripper 26 and the circuit board.

[0040] Then, the threaded shaft 22 is reversed, and the moving seat 24 drives the flipping box 25 to move in the opposite direction. The flipping box 25 drives the circuit board upward through the suction cup gripper 26. During the upward movement of the circuit board by the flipping box 25 and the suction cup gripper 26, the push rod 38 inside one end of the suction pipe 35 gradually moves out of the interior of the transition pipe 37. At this time, the sealing rod 39 inside the transition pipe 37 gradually resets. The reset of the sealing rod 39 can re-seal the transition pipe 37 and the connecting pipe 28, thereby maintaining the sealing between the connecting pipe 28 and the suction cup gripper 26 and maintaining the adsorption stability between the suction cup gripper 26 and the circuit board. Then, the motor b is started, and the output end of the motor b drives the power shaft 23. Rotation: The power shaft 23 drives the tilting box 25 to rotate, and the tilting box 25 tilts the circuit board via the suction cup gripper 26. During the tilting process, the circuit board and the tilting box 25 deflect. At this time, the slider 42 and the first magnetic block 43 on the outside of the tilting box 25 move along the limiting groove 45 via the roller 44 due to their own gravity. Since the first magnetic block 43 and the second magnetic block 46 are magnetically connected, the slider 42 moves while the second magnetic block 46 moves, and the second magnetic block 46 moves while the sealing block 41 moves inside the tilting box 25. At the same time, the sealing block 41 compresses the spring 47. (See reference...) Figure 4 As shown, for example, the flip box 25 drives the circuit board to flip counterclockwise, and the sealing block 41 will move along the flip direction of the circuit board. At the same time, the movement of the sealing block 41 will use the flip box 25 to extract a certain amount of gas from the inside of the connecting pipe 28, thereby increasing the adsorption force between the right suction cup gripper 26 and the circuit board during the flip process, which can play a pre-tightening role.

[0041] After the circuit board is flipped, the flipping box 25 moves the circuit board downward again through the suction cup gripper 26. During the process of the circuit board moving to the conveyor track, since the transition tube 37 is not on the axis of the power shaft 23, it will no longer be in its original position after the circuit board is flipped. At this time, the transition tube 37 will be above the air outlet tube 34. When the transition tube 37 moves downward with the circuit board, the push rod 38 inside the air outlet tube 34 will extend into the transition tube 37 and push up the sealing rod 39 until the air outlet tube 34 extends into the transition tube 37 and connects the air outlet tube 34 to the connecting tube 28 through the transition tube 37. Since the air outlet tube 34 is connected to the air outlet of the air pump 32, the air outlet tube 34 will supply air to the inside of the connecting tube 28. This will allow the suction cup gripper 26 to disconnect from the circuit board, thus automatically disconnecting the circuit board and allowing the circuit board to automatically flip and reset to the conveyor track.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for turning over a circuit board to be processed, comprising a support (1), characterized in that, The support (1) is provided with a turnover mechanism (2) for overturning the circuit board, the turnover mechanism (2) comprises a moving seat (24) moving on the support (1), a turnover box (25) is rotatably arranged on the moving seat (24), a pre-tightening mechanism (4) for keeping the auxiliary circuit board stable during turnover is arranged on the turnover box (25), a rectangular connecting pipe (28) is communicated with the turnover box (25), and a suction disc clamp hand (26) for adsorbing and fixing the edge of the circuit board is communicated with the connecting pipe (28); and a cleaning mechanism (3) for stably clamping the circuit board is arranged on one side of the support (1) in cooperation with the suction disc clamp hand (26). The cleaning mechanism (3) comprises a collecting box (31) arranged on one side of the support (1), an air pump (32) is arranged in the collecting box (31), an air cushion (33) is arranged in the collecting box (31) and connected to the air pump (32), an air outlet pipe (34) is communicated with the air pump (32), an air inlet pipe (35) is arranged on the air pump (32), a top rod (38) is arranged in the air outlet pipe (34) and the air inlet pipe (35), a transition pipe (37) is communicated with the connecting pipe (28), and a sealing rod (39) is slidably arranged in the transition pipe (37); the air pump (32) sends air to the air cushion (33) to make it expand, when the circuit board is conveyed to a certain position by the conveying track, the turnover box (25) moves towards the circuit board on the support (1) through the moving seat (24), the turnover box (25) drives the connecting pipe (28) and the suction disc clamp hand (26) to move synchronously, the transition pipe (37) on the connecting pipe (28) moves to a certain position and is in contact with the air inlet pipe (35), at this moment, the top rod (38) in the air inlet pipe (35) extends into the transition pipe (37) and lifts the sealing rod (39), and the air inlet pipe (35) communicates with the connecting pipe (28) to suck the air of the suction disc clamp hand (26), so that the suction disc clamp hand (26) is stably adsorbed and connected with the circuit board; The pre-tightening mechanism (4) comprises a sealing block (41) slidably arranged in the turnover box (25), a second magnetic block (46) is arranged on one side of the sealing block (41), a first magnetic block (43) is slidably arranged on the outside of the turnover box (25), and the first magnetic block (43) is magnetically adsorbed and connected with the second magnetic block (46) to drive the sealing block (41) to move when the first magnetic block (43) slides; when the turnover box (25) drives the circuit board to overturn, the first magnetic block (43) slides along the outside of the turnover box (25) due to its own gravity, the first magnetic block (43) drives the second magnetic block (46) to move through magnetic force, the second magnetic block (46) drives the sealing block (41) to move in the turnover box (25), and the sealing block (41) further extracts the air in the connecting pipe (28) by using the turnover box (25) during movement.

2. The turnover device for processing a circuit board according to claim 1, wherein The support (1) is fixed with a motor a (21), the output end of the motor a (21) is fixedly installed with a threaded shaft (22), the threaded shaft (22) rotates on the support (1), and the moving seat (24) is connected with the outer side of the threaded shaft (22) through a ball nut pair.

3. The turnover device for processing a circuit board according to claim 1, wherein One side of the moving seat (24) is provided with a motor b for driving the overturning of the overturning box (25), and the output end of the motor b is connected with the power shaft (23).

4. The turnover device for processing a circuit board according to claim 1, wherein The connecting pipe (28) is two groups, which are respectively communicated with two ends of the overturning box (25), and the suction cup clamp hand (26) is four, which are distributed on the two groups of connecting pipes (28).

5. The turnover device for processing a circuit board according to claim 1, wherein One end of the two groups of connecting pipes (28) is communicated with the transition pipe (37).

6. The turnover device for processing a circuit board according to claim 1, wherein The outer side of the air cushion (33) is fixed with a jet frame (36), and the edge of the jet frame (36) is provided with a jet nozzle.

7. The turnover device for processing a circuit board according to claim 1, wherein The outer side of the overturning box (25) is slidably provided with a sliding block (42) for mounting a first magnetic block (43), and the upper and lower ends of the sliding block (42) are both provided with a roller (44).

8. The turnover device for processing a circuit board according to claim 7, wherein The overturning box (25) is provided with a limiting groove (45) for the movement of the roller (44).

9. The turnover device for processing a circuit board according to claim 1, wherein The inside of the overturning box (25) is fixed with a compression spring (47), one end of the compression spring (47) is fixedly connected with a sealing block (41).

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