A circuit board etching apparatus

Abstract

This invention relates to the field of circuit board etching technology and discloses a circuit board etching device. The device includes four sets of support columns symmetrically fixed at the four corners of the bottom of the device housing. A filtration assembly is used to filter impurities inside the etching solution. The filtration assembly includes a second base plate fixed to the opposite side of the four support columns. A filter box is fixed to the top of the second base plate. A second pipe is fixed to the right outer wall of the filter box. A filter screen is fixed to the inner wall of the filter box. A filter membrane is fixed to the inner wall of the filter box near the filter screen. An activated carbon filter screen is fixed to the inner wall of the filter box near the filter membrane. The filter screen, filter membrane, and activated carbon filter screen are arranged at equal intervals. A flipping assembly is used to flip the circuit board. A transmission assembly is used to drive the flipping assembly to move at a uniform speed. A pick-and-place assembly is used to pick up and place the circuit board. Compared with the prior art, this application can achieve filtration and secondary recycling of the etching solution, saving resources and reducing costs.

Description

Technical Field

[0001] This invention relates to the field of circuit board etching technology, specifically to a circuit board etching device. Background Technology

[0002] Circuit board etching is a crucial process in circuit board manufacturing used to create precise circuit patterns. It works by using chemical or physical methods to remove unwanted copper foil from the copper-clad laminate, retaining only the parts needed to form the circuit, thus obtaining a precise circuit pattern. For example, etchants such as ferric chloride solutions react chemically with copper, dissolving the copper that is not protected by resist.

[0003] In existing technologies, circuit boards are mostly placed directly on the worktable during etching, and the etching is carried out step by step with mechanical transmission. However, this method often results in the circuit board shifting midway, thus reducing etching efficiency. Secondly, after etching, there are impurities in the etching solution, which often affect the etching efficiency. Usually, the etching solution is changed regularly, but the efficiency of treating and reusing the waste solution is low. Finally, when etching a circuit board, it is often only possible to etch one side, and the back side is difficult to treat well. Therefore, we propose a circuit board etching device. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a circuit board etching apparatus that has the advantages of filtering and treating etching solutions and utilizing secondary raw materials. Furthermore, it can fix circuit boards and flip them over, thus solving a series of problems in existing technologies, such as low efficiency in treating and utilizing etching solutions and the displacement and difficulty in flipping circuit boards during etching.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a circuit board etching apparatus, comprising,

[0006] The equipment housing has four sets of support columns symmetrically fixed at the four corners of its bottom.

[0007] A filtration assembly is used to filter impurities inside the etching solution. The filtration assembly includes a second base plate fixed to four sets of supporting columns facing each other. A filter box is fixed to the top of the second base plate. A second pipe is fixed to the right outer wall of the filter box. A filter screen is fixed to the inner wall of the filter box. A filter membrane is fixed to the inner wall of the filter box near the filter screen. An activated carbon filter screen is fixed to the inner wall of the filter box near the filter membrane. The filter screen, filter membrane, and activated carbon filter screen are arranged at equal intervals. A trapezoidal collecting plate is fixed to the inner wall of the filter box near the activated carbon filter screen. A cylindrical filter cylinder is fixed to the bottom of the filter box. The bottom of the trapezoidal collecting plate is adapted to the top of the cylindrical filter cylinder. A first motor is fixed to the bottom of the second base plate. The output end of the first motor is fixedly connected to the cylindrical filter cylinder.

[0008] A flipping assembly for flipping a circuit board;

[0009] A transmission assembly, which drives the tilting assembly to move at a constant speed;

[0010] A pick-and-place assembly for picking up and placing circuit boards.

[0011] Preferably, a first through hole is provided on the bottom right side of the inner wall of the equipment box, an inclined plate is fixed to the bottom of the inner wall of the equipment box, a liquid outlet pipe is fixed to the bottom of the first through hole, a filter pipe is fixed to the left side of the liquid outlet pipe, a third pipe is fixed to the left side of the filter pipe, a second vacuum pump is fixed to the top of the second base plate, the output end of the second vacuum pump is fixedly connected to the end of the third pipe, a second pipe is fixed to the left side of the second vacuum pump, the end of the second pipe away from the second vacuum pump is connected to the filter box, and a first base plate is fixed on the opposite side of the two sets of support columns on the left.

[0012] Preferably, a collection box is fixed to the top of the first base plate, a first pipe is fixed to the front side of the collection box, a fourth pipe is fixed to the right outer wall of the collection box, and the end of the fourth pipe away from the collection box is connected to the filter box.

[0013] Preferably, a first vacuum pump is fixed to the top of the equipment housing, the output end of the first vacuum pump is connected to a first pipe, a nozzle base is fixed to the top of the inner wall of the equipment housing, and several sets of nozzles are arranged at equal intervals at the bottom of the nozzle base. The other end of the first vacuum pump is connected to the nozzle base through a pipe.

[0014] Preferably, the transmission assembly includes two sets of rotating shafts symmetrically rotatably connected to the left and right sides of the inner wall of the equipment housing. Two sets of first synchronous pulleys are symmetrically and coaxially fixed at the front and rear ends of the rotating shaft on the left side, and two sets of second synchronous pulleys are coaxially fixed at the front and rear ends of the rotating shaft on the right side. The two sets of first synchronous pulleys are connected to the two sets of second synchronous pulleys one-to-one by a synchronous belt. A second motor is fixed to the right side of the front outer wall of the equipment housing, and the output end of the second motor is fixedly connected to the second synchronous pulleys.

[0015] Preferably, the flipping assembly includes two sets of first support plates symmetrically fixed to the front and rear sides of the inner wall of the equipment housing. A first rack is fixed to the top of the two sets of first support plates. Two sets of second support plates are symmetrically fixed to the front and rear sides of the right side of the inner wall of the equipment housing. A second rack is fixed to the top of the two sets of second support plates. Several sets of fixing blocks are equidistantly fixed to the outer walls of the two sets of synchronous belts. Two sets of gears are symmetrically rotatably connected to the opposite side of the several sets of fixing blocks. A rectangular frame is fixedly connected to the opposite side of the gears. A groove is fixed in the center of the inner wall of the rectangular frame. Four sets of grippers are symmetrically fixed on the left and right sides of the groove. The gears mesh with the second rack and the gears mesh with the first rack.

[0016] Preferably, the pick-and-place assembly includes a third base plate fixed to the outer wall of the rear side of the equipment housing. Two sets of robotic arms are symmetrically fixed at the left and right ends of the third base plate. The output ends of the two sets of robotic arms are fixedly connected to negative pressure plates. The outer walls of the two sets of negative pressure plates are provided with several sets of negative pressure suction blocks.

[0017] Preferably, two sets of second through holes are symmetrically provided on the left and right sides of the equipment housing.

[0018] Compared with the prior art, the present invention provides a circuit board etching apparatus, which has the following beneficial effects:

[0019] 1. This circuit board etching equipment, by setting up an equipment housing and filter components, allows the etching solution to enter the equipment housing when the circuit board enters. As etching progresses, the etching solution enters the outlet pipe through the first through hole at the bottom of the equipment housing. With the activation of the second vacuum pump, the etched solution is gradually transported to the filter housing. After being filtered through layers of filter screens, filter membranes, and activated carbon filters, it finally enters the cylindrical filter cartridge. At this time, the first motor is activated, driving the cylindrical filter cartridge to rotate at high speed. Finally, the filtered etching solution is transported to the collection tank through the fourth pipe for collection, and then transported to the nozzle for secondary etching by the first vacuum pump. Through the above design, the etching solution can be filtered and recycled, saving resources and reducing costs.

[0020] 2. This circuit board etching equipment, by setting up an equipment housing, transmission components, and flipping components, allows the circuit board to be placed in the groove during use. At this time, four sets of grippers will firmly fix the circuit board, and then the second motor will be started to move the circuit board. When the gear meshes with the second rack, the rectangular frame will rotate 180° to flip the circuit board. As the movement continues, the gear will mesh with the first rack, and the rectangular frame will rotate 180° to return to the initial state, bringing the processed circuit board to the second through hole on the left side of the equipment housing. Through the above design, the circuit board can be flipped, improving the etching efficiency.

[0021] 3. This circuit board etching equipment, by setting up a pick-and-place component, during use, uses a robotic arm with a negative pressure plate to adsorb the circuit board and place it at the second through hole on the right side of the equipment body. When the gripper clamps, it immediately releases, and this process is repeated to achieve rapid placement of the circuit board. The robotic arm on the left side of the equipment body will quickly remove the processed circuit board through the negative pressure plate. Through the above design, automatic picking and placing can be achieved, improving work efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the filter component structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the filter housing of the present invention;

[0025] Figure 4 This is a schematic diagram of a partial unfolded structure of the filter housing of the present invention;

[0026] Figure 5 This is a schematic diagram of the transmission component structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the flip component structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the pick-and-place component structure of the present invention;

[0029] Figure 8 This is a schematic diagram of a three-dimensional partial structure of the present invention.

[0030] In the diagram: 1. Equipment housing; 2. Filter assembly; 3. Transmission assembly; 4. Tilting assembly; 5. Picking and placing assembly; 6. First base plate; 7. Second base plate; 8. Support column; 9. Negative pressure plate; 10. First vacuum pump; 11. Robotic arm; 12. Third base plate; 13. First pipe; 14. Second pipe; 15. Filter tube; 16. Liquid outlet pipe; 17. Third pipe; 18. Second vacuum pump; 19. Filter housing; 20. First motor; 21. Fourth pipe; 22. Collection box; 23. Filter screen; 4. Filter membrane; 25. Activated carbon filter screen; 26. Nozzle base; 27. Trapezoidal collecting plate; 28. Columnar filter cartridge; 29. ​​First synchronous pulley; 30. Rotating shaft; 31. Synchronous belt; 32. Inclined plate; 33. Second motor; 34. Second synchronous pulley; 35. Nozzle; 37. First rack; 38. First support plate; 39. Second rack; 40. Second support plate; 41. Rectangular frame; 42. Gripper; 43. Gear; 44. Fixing block; 45. Groove; 46. First through hole; 47. Second through hole. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a circuit board etching apparatus.

[0033] In one typical implementation of this application, such as Figure 1-8 As shown, a circuit board etching device includes a device housing 1, and four sets of support columns 8 are symmetrically fixed at the four corners of the bottom of the device housing 1.

[0034] Before use, the bottom of the equipment box 1 is provided with four sets of support columns 8, which are mainly used for support. A second base plate 7 is provided on the inner wall of the support column 8 facing each other, and a filter assembly 2 is provided on the top of it. A first base plate 6 is provided on the two sets of support columns 8 on the left side. The function of the first base plate 6 is to support the collection box 22. Secondly, the equipment box 1 has second through holes 47 on the left and right sides. The second through hole 47 on the left side is the discharge port, and the second through hole 47 on the right side is the inlet port. Picking and placing components 5 are provided at both ends of the equipment box 1 for picking and placing the circuit board.

[0035] In the above, the pick-and-place component 5 includes a third base plate 12 fixed to the outer wall of the rear side of the equipment box 1. Two sets of robotic arms 11 are symmetrically fixed at the left and right ends of the third base plate 12. The output ends of the two sets of robotic arms 11 are fixedly connected to negative pressure plates 9. Several sets of negative pressure suction blocks are provided on the outer walls of the two sets of negative pressure plates 9.

[0036] It should be noted that the two sets of robotic arms 11 are respectively set at the left and right ends of the third base plate 12. A negative pressure plate 9 is set at the output end of the robotic arm 11. It should be noted that one end of the negative pressure plate 9 performs vacuum adsorption through the output of the cylinder. The specific working process will not be described in detail here, as this technology is existing technology. It should be mentioned that the placement speed and retrieval speed of the robotic arm 11 are matched with the transmission component 3 and the flipping component 4 to achieve automated design, improve work efficiency and reduce costs.

[0037] In a preferred embodiment of this example, the filter assembly 2 is used to filter impurities inside the etching solution. The filter assembly 2 includes a second base plate 7 fixed to one side of four sets of support columns 8 facing each other. A filter box 19 is fixed to the top of the second base plate 7. A second pipe 14 is fixed to the outer right side of the filter box 19. A filter screen 23 is fixed to the inner wall of the filter box 19. A filter membrane 24 is fixed to the inner wall of the filter box 19 near the filter screen 23. An activated carbon filter screen 25 is fixed to the inner wall of the filter box 19 near the filter membrane 24. The filter screen 23 and the filter membrane... The filter screens 24 and 25 are arranged at equal intervals. A trapezoidal collecting plate 27 is fixed to the inner wall of the filter box 19 near the activated carbon filter screen 25. A cylindrical filter cartridge 28 is fixed to the bottom of the filter box 19. The bottom of the trapezoidal collecting plate 27 is adapted to the top of the cylindrical filter cartridge 28. A first motor 20 is fixed to the bottom of the second base plate 7. The output end of the first motor 20 is fixedly connected to the cylindrical filter cartridge 28. A first through hole 46 is opened on the right side of the bottom of the inner wall of the equipment box 1. An inclined plate 32 is fixed to the bottom of the inner wall of the equipment box 1. A liquid outlet pipe 16 is fixed to the bottom of the first base plate 6. A filter pipe 15 is fixed to the left side of the liquid outlet pipe 16. A third pipe 17 is fixed to the left side of the filter pipe 15. A second vacuum pump 18 is fixed to the top of the second base plate 7. The output end of the second vacuum pump 18 is fixedly connected to the end of the third pipe 17. A second pipe 14 is fixed to the left side of the second vacuum pump 18. The end of the second pipe 14 away from the second vacuum pump 18 is connected to the filter box 19. A first base plate 6 is fixed to the opposite side of the two sets of support columns 8 on the left side. A receiving device is fixed to the top of the first base plate 6. The collection box 22 has a first pipe 13 fixed to its front side and a fourth pipe 21 fixed to its right outer wall. The end of the fourth pipe 21 away from the collection box 22 is connected to the filter box 19. The top of the equipment box 1 has a first vacuum pump 10 fixed and the output end of the first vacuum pump 10 is connected to the first pipe 13. The top of the inner wall of the equipment box 1 has a nozzle base 26 fixed and several sets of nozzles 35 are arranged at equal intervals at the bottom of the nozzle base 26. The other end of the first vacuum pump 10 is connected to the nozzle base 26 through a pipe.

[0038] Specifically, when etching begins inside the equipment housing 1, the etching solution after the chemical reaction will flow along the inclined plate 32 to the first through hole 46. The function of the inclined plate 32 is to quickly collect the etching solution after the reaction. After the etching solution is collected, it will be concentrated at the outlet pipe 16. Then, the second vacuum pump 18 will be started. At this time, the etching solution will first pass through the filter pipe 15 for preliminary filtration and screening, and then enter the interior of the filter housing 19 through the second pipe 14. The main function of the filter pipe 15 is preliminary screening, which is to screen large particles of impurities. Then, after the etching solution after the reaction enters the interior of the filter housing 19, it will gradually fall from the top of the filter housing 19 to the bottom. During this process, it will pass through the filter screen 23, the filter membrane 24 and the activated carbon filter screen 25 in sequence, and finally be collected by the third pipe 17 and enter the cylindrical filter cartridge 28.

[0039] It is worth mentioning that the diameter of the filter screen 23 is 0.3mm and the gap width is precisely set to 100μm. This design can efficiently intercept large-sized impurities such as copper foil debris and equipment wear particles generated during the circuit board etching process. The filter membrane 24 is a polyvinylidene fluoride (PVDF) microporous filter membrane, and the filter membrane 24 ranges from 1 to 100μm. The outer pore size is approximately 100 μm, and its main purpose is to initially intercept medium-sized particles. Finally, the interior of the activated carbon filter 25 is filled with granular coconut shell activated carbon with a particle size of 0.8 to 1.2 mm. The main purpose of this design is to adsorb impurities such as organic matter and pigments in the etching solution. The treated etching solution will enter the cylindrical filter cartridge 28. At this time, the first motor 20 is started, and the final screening and filtration are carried out through high-speed centrifugation to obtain a usable secondary etching solution. This solution flows into the collection box 22 through the fourth pipe 21 and is then collected. Subsequently, the first vacuum pump 10 is started, and the solution is sprayed evenly onto the surface of the circuit board from the nozzle 35. The above design can realize the screening and filtration of the etching solution, as well as the secondary recovery and utilization of energy, reducing energy consumption.

[0040] Furthermore, in the above scheme, the transmission assembly 3 includes two sets of rotating shafts 30 symmetrically rotatably connected to the left and right sides of the inner wall of the equipment housing 1. Two sets of first synchronous pulleys 29 are symmetrically and coaxially fixed at the front and rear ends of the left rotating shaft 30, and two sets of second synchronous pulleys 34 are coaxially fixed at the front and rear ends of the right rotating shaft 30. The two sets of first synchronous pulleys 29 are connected to the two sets of second synchronous pulleys 34 one-to-one through a synchronous belt 31. A second motor 33 is fixed to the right side of the front outer wall of the equipment housing 1, and the output end of the second motor 33 is fixedly connected to the second synchronous pulleys 34. The tilting assembly 4 includes two sets of first support plates 3 symmetrically fixed to the front and rear sides of the inner wall of the equipment housing 1. 8. The top of the two sets of first support plates 38 is fixed with a first rack 37. The inner wall of the equipment box 1 is symmetrically fixed with two sets of second support plates 40 on the front and back sides. The top of the two sets of second support plates 40 is fixed with a second rack 39. The outer walls of the two sets of synchronous belts 31 are equidistantly fixed with several sets of fixing blocks 44. The opposing sides of the several sets of fixing blocks 44 are symmetrically rotatably connected with two sets of gears 43. The opposing sides of the gears 43 are fixedly connected with a rectangular frame 41. The inner wall of the rectangular frame 41 is centrally fixed with a groove 45. Four sets of grippers 42 are symmetrically fixed on the left and right sides of the groove 45. The gears 43 mesh with the second rack 39 and the first rack 37.

[0041] In this embodiment, the circuit board is placed in the groove 45 at a constant speed by the robotic arm 11. It should be noted that when the negative pressure plate 9 on the robotic arm 11 places the circuit board in the groove 45, the four sets of grippers 42 will quickly clamp the circuit board. At the same time, the negative pressure plate 9 will release the suction of the circuit board, and the robotic arm 11 will pick up another circuit board. This process is repeated to achieve automatic feeding. On the left side of the equipment housing 1, when the etched circuit board reaches the second through hole 47, the robotic arm 11 will quickly make the negative pressure plate 9 contact and suction the circuit board. At this time, the four sets of grippers 42 will release the fixation of the circuit board, so that the robotic arm 11 can quickly carry the processed circuit board away through the negative pressure plate 9 and place it on the next processing equipment. This process is repeated to achieve rapid unloading.

[0042] Finally, it should be mentioned that when the circuit board is driven by the robotic arm 11 to place the negative pressure plate 9 into the groove 45 and then fixed in place, the second motor 33 will start synchronously, driving the second synchronous wheel 34 to rotate. This, in turn, causes the first synchronous wheel 29 to rotate via the synchronous belt 31. Several sets of fixing blocks 44 are equidistantly arranged on the outer wall of the synchronous belt 31, with two sets of gears 43 on their opposing sides. The gears 43 are rotatably connected to the fixing blocks 44 and are fixedly connected to the rectangular frame 41. Therefore, when the gears 43 rotate, the rectangular frame 41 will rotate accordingly. Two sets of second support plates 40 are arranged on the inner wall of the equipment housing 1, with a second rack 39 on their top. Similarly, on the inner wall of the equipment housing 1... The internal structure has two sets of first support plates 38, with a first rack 37 on top. It should be noted that both the first rack 37 and the second rack 39 mesh with the gear 43. When the gear 43 meshes with the second rack 39 first, the rectangular frame 41 starts to rotate. When the gear 43 disengages from the second rack 39, the rectangular frame 41 rotates 180° to flip over. Then, as the rectangular frame 41 continues to move forward, the gear 43 meshes with the first rack 37 and rotates. When the gear 43 disengages from the first rack 37, the rectangular frame 41 rotates 180° back to its initial state, and the robotic arm 11 drives the negative pressure plate 9 to remove the etched circuit board. This process is repeated to improve etching efficiency.

[0043] Working principle of the invention: When etching begins inside the equipment housing 1, the etching solution after chemical reaction will flow along the inclined plate 32 to the first through hole 46. The function of the inclined plate 32 is to quickly collect the etching solution after the reaction. After the etching solution is collected, it will be concentrated at the outlet pipe 16. Then, the second vacuum pump 18 will be started. At this time, the etching solution will first pass through the filter pipe 15 for preliminary filtration and screening, and then enter the interior of the filter housing 19 through the second pipe 14. The main function of the filter pipe 15 is preliminary screening, which is to screen large particles of impurities. Then, after the etching solution after the reaction enters the interior of the filter housing 19, it will gradually fall from the top of the filter housing 19 to the bottom. During this process, it will pass through the filter screen 23, filter membrane 24 and activated carbon filter screen 25 in sequence, and finally be collected by the third pipe 17 and enter the cylindrical filter cartridge 28.

[0044] It is worth mentioning that the diameter of the filter screen 23 is 0.3mm and the gap width is precisely set to 100μm. This design can efficiently intercept large-sized impurities such as copper foil debris and equipment wear particles generated during the circuit board etching process. The filter membrane 24 is a polyvinylidene fluoride (PVDF) microporous filter membrane, and the filter membrane 24 ranges from 1 to 100μm. The outer pore size is approximately 100 μm, and its main purpose is to initially intercept medium-sized particles. Finally, the interior of the activated carbon filter 25 is filled with granular coconut shell activated carbon with a particle size of 0.8 to 1.2 mm. The main purpose of this design is to adsorb impurities such as organic matter and pigments in the etching solution. The treated etching solution will enter the cylindrical filter cartridge 28. At this time, the first motor 20 is started, and the final screening and filtration are carried out through high-speed centrifugation to obtain a usable secondary etching solution. This solution flows into the collection box 22 through the fourth pipe 21 and is then collected. Subsequently, the first vacuum pump 10 is started, and the solution is sprayed evenly onto the surface of the circuit board from the nozzle 35. The above design can realize the screening and filtration of the etching solution, as well as the secondary recovery and utilization of energy, reducing energy consumption.

[0045] 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. A circuit board etching apparatus, comprising an apparatus housing, wherein four sets of support columns are symmetrically fixed at the four corners of the bottom of the apparatus housing; and a filter assembly for filtering impurities inside the etching solution, the filter assembly comprising a second base plate fixed to one side of the four sets of support columns facing each other, a filter chamber fixed to the top of the second base plate, a second pipe fixed to the right outer wall of the filter chamber, a filter screen fixed to the inner wall of the filter chamber, a filter membrane fixed to the inner wall of the filter chamber near the filter screen, and an activated carbon filter screen fixed to the inner wall of the filter chamber near the filter membrane. The filter screen, filter membrane, and activated carbon filter screen are arranged at equal intervals. A trapezoidal collecting plate is fixed to the inner wall of the filter box near the activated carbon filter screen. A cylindrical filter cylinder is fixed to the bottom of the filter box. The bottom of the trapezoidal collecting plate is adapted to the top of the cylindrical filter cylinder. A first motor is fixed to the bottom of the second base plate. The output end of the first motor is fixedly connected to the cylindrical filter cylinder. A flipping assembly is used to flip the circuit board. A transmission assembly is used to drive the flipping assembly to move at a constant speed. A pick-and-place assembly is used to pick up and place the circuit board. A first through hole is provided on the bottom right side of the inner wall of the equipment box. An inclined plate is fixed to the bottom of the inner wall of the equipment box. A liquid outlet pipe is fixed to the bottom of the first through hole. A filter pipe is fixed to the left side of the liquid outlet pipe. A third pipe is fixed to the left side of the filter pipe. A second vacuum pump is fixed to the top of the second base plate. The output end of the second vacuum pump is fixedly connected to the end of the third pipe. A second pipe is fixed to the left side of the second vacuum pump. The end of the second pipe away from the second vacuum pump is connected to the filter box. A first base plate is fixed on the opposite side of the two sets of support columns on the left side. The transmission assembly includes two sets of rotating shafts symmetrically rotatably connected to the left and right sides of the inner wall of the equipment housing. Two sets of first synchronous pulleys are symmetrically and coaxially fixed at the front and rear ends of the rotating shaft on the left side, and two sets of second synchronous pulleys are coaxially fixed at the front and rear ends of the rotating shaft on the right side. The two sets of first synchronous pulleys are connected to the two sets of second synchronous pulleys one-to-one by a synchronous belt. A second motor is fixed to the right side of the front outer wall of the equipment housing, and the output end of the second motor is fixedly connected to the second synchronous pulley. The flipping assembly includes two sets of first support plates symmetrically fixed to the front and rear sides of the inner wall of the equipment box. A first rack is fixed to the top of the two sets of first support plates. Two sets of second support plates are symmetrically fixed to the front and rear sides of the right side of the inner wall of the equipment box. A second rack is fixed to the top of the two sets of second support plates. Several sets of fixing blocks are equidistantly fixed to the outer walls of the two sets of synchronous belts. Two sets of gears are symmetrically rotatably connected to the opposite side of the several sets of fixing blocks. A rectangular frame is fixedly connected to the opposite side of the gears. A groove is fixed in the center of the inner wall of the rectangular frame. Four sets of grippers are symmetrically fixed on the left and right sides of the groove. The gears mesh with the second rack and the gears mesh with the first rack.

2. The circuit board etching apparatus according to claim 1, characterized in that: A collection box is fixed to the top of the first base plate, a first pipe is fixed to the front side of the collection box, a fourth pipe is fixed to the right outer wall of the collection box, and the end of the fourth pipe away from the collection box is connected to the filter box.

3. The circuit board etching apparatus according to claim 2, characterized in that: A first vacuum pump is fixed to the top of the equipment housing. The output end of the first vacuum pump is connected to a first pipe. A nozzle base is fixed to the top of the inner wall of the equipment housing. Several sets of nozzles are arranged at equal intervals at the bottom of the nozzle base. The other end of the first vacuum pump is connected to the nozzle base through a pipe.

4. The circuit board etching apparatus according to claim 1, characterized in that: The pick-and-place assembly includes a third base plate fixed to the outer wall of the rear side of the equipment housing. Two sets of robotic arms are symmetrically fixed at the left and right ends of the third base plate. The output ends of the two sets of robotic arms are fixedly connected to negative pressure plates. Several sets of negative pressure suction blocks are provided on the outer walls of the two sets of negative pressure plates.

5. The circuit board etching apparatus according to claim 1, characterized in that: The equipment housing has two sets of second through holes symmetrically opened on the left and right sides.

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