PCB processing device

Abstract

The invention belongs to the technical field of PCB processing, particularly relates to a PCB processing device, and aims to solve the problem that liquid medicine still remains on the surface of an existing PCB after one step is completed, the PCB processing device comprises a processing pool, a plurality of liquid medicine grooves and a plurality of spraying grooves are formed in the processing pool and are arranged in a staggered mode, and the processing pool is provided with a plurality of spraying grooves. A rectangular frame is arranged at the top end of the treatment tank, and the two sides of the top end of the rectangular frame are slidably sleeved with moving sleeves. When a moving frame lifts a PCB clamped by a clamping piece from a liquid medicine tank or a spraying tank along with stretching and retracting of a hydraulic push rod, a distance sensor monitors the distance between a bridge frame and the moving frame, a second transmission assembly and a third transmission assembly work in a matched mode, a driving gear drives two driven gears to rotate, and the driving gear drives the two driven gears to rotate; the U-shaped toothed plate drives the jet flow frame and the flow raising plate to move downwards along the rectangular hole, and the air pump works in a matched mode, so that air flow jetted by the jet flow frame and the flow raising plate blows liquid medicine on the surface of the PCB downwards, and downward flowing and back dripping of the liquid medicine are accelerated.

Description

Technical Field

[0001] This invention relates to the field of PCB board processing technology, and in particular to a PCB board processing apparatus. Background Technology

[0002] A PCB, also known as a printed circuit board, is a crucial electronic component. It serves as the support for electronic components and the carrier for their electrical interconnections. Almost every electronic device, from small items like watches and calculators to large systems like computers, communication devices, and military weaponry, utilizes a PCB to enable electrical interconnection between integrated circuits and other electronic components. PCBs replace complex wiring, simplifying assembly and soldering, reducing traditional wiring work, and significantly alleviating worker fatigue. They also reduce overall size, lower costs, and improve the quality and reliability of electronic devices. Furthermore, they offer good product consistency and standardized design, facilitating mechanization and automation in production. Currently, PCBs are widely used in the manufacturing of electronic products.

[0003] Copper plating is a key process in circuit board manufacturing. After drilling, the PCB board undergoes an oxidation-reduction reaction in a copper plating bath to form a copper layer, thus metallizing the holes and depositing copper onto the originally insulating substrate surface, achieving interlayer electrical connectivity. The standard copper plating process includes four stages: pretreatment, activation, chemical copper plating, and post-treatment. Pretreatment includes removing adhesive residue, neutralization, and micro-etching; activation includes colloidal palladium adsorption and adhesive removal; chemical copper plating includes copper plating and board plating; and post-treatment includes backlight testing and water washing and drying. Each adjacent process step requires thorough rinsing of the circuit board to prepare for the next step.

[0004] However, the following drawbacks still need to be addressed: after completing one of the steps, the PCB board still has residual chemicals on its surface, and there are also accumulated chemical droplets at the bottom. Direct rinsing would result in waste of chemicals. Summary of the Invention

[0005] To address the technical problem that existing PCB boards still have chemical residues on their surface after completing one of the steps, this invention proposes a PCB board processing device.

[0006] This invention proposes a PCB board processing device, comprising a processing tank containing multiple chemical tanks and spray tanks arranged alternately. A rectangular frame is mounted at the top of the processing tank, with movable sleeves slidably fitted onto both sides of the top of the rectangular frame. A bridge is fixedly installed between the opposite ends of the two movable sleeves. Hydraulic push rods are fixedly installed on both sides of the bottom of the bridge, and a movable frame is fixedly installed between the movable bottom ends of the two hydraulic push rods. A distance sensor is fixedly installed in the middle of the top of the movable frame, and multiple clamping devices are provided at the bottom of the movable frame. The component has rectangular holes on both sides of the movable frame. A drive gear is rotatably installed in the middle of the rectangular hole, and driven gears are rotatably installed at both ends of the rectangular hole. The circumference of the drive gear in each group meshes with the circumferences of the two driven gears. A U-shaped toothed plate is provided between the inner walls of both ends of each rectangular hole and the opposite ends of the circumferences of the two driven gears. An L-shaped plate is fixedly connected to the bottom ends of the U-shaped toothed plate. A jet frame is fixedly installed at the bottom ends of the two L-shaped plates in each row, and a blower plate is rotatably installed at the opposite ends of the bottom ends of the two jet frames. An air pump is fixedly installed in the middle of the outer walls of the opposite ends of the two jet frames.

[0007] Preferably, side plates are fixedly installed on both sides of the bottom end of the bridge frame, and a traveling gear is rotatably installed on the upper end of the opposite end of the two side plates. Rollers are rotatably installed on both ends of the lower end of the opposite end of the two side plates. A guide tooth plate is fixedly installed between the bottom ends of the two ends of the rectangular frame, and the bottom circumference of the traveling gear meshes with the top end of the guide tooth plate. The top circumference of the two rollers is in contact with the bottom end of the guide tooth plate. A drive motor is fixedly installed on the input end of the traveling gear.

[0008] Preferably, a T-shaped rod is fixedly installed at the middle of the bottom ends of the two movable sleeves, and the two sides of the movable frame are slidably sleeved with the T-shaped rod. A support spring is fixedly installed between the circumference of the T-shaped rod and the movable frame.

[0009] Preferably, the movable frame has an installation cavity inside, and the bottom of the installation cavity has multiple equally spaced rectangular openings. Multiple equally spaced bidirectional threaded rods are rotatably installed inside the installation cavity. The two ends of the bidirectional threaded rods are rotatably installed with two clamping members, and each bidirectional threaded rod is located at the top of the rectangular opening in the same column. A first transmission assembly is provided between the input ends of the multiple bidirectional threaded rods.

[0010] Preferably, each of the rectangular holes is located between the hydraulic push rods and T-shaped rods in the same row, and the two jet frames are located on the outer sides of the two ends of the movable frame, respectively.

[0011] Preferably, a second transmission component is provided on the outer wall of one end of the movable frame, and both the first and second transmission components are composed of multiple sprockets and transmission chains connected together. A third transmission component is provided between the two sprockets of the second transmission component and the two driving gears respectively, and the third transmission component is an intersecting shaft gear transmission. A driving component is fixedly installed at the input end of one of the sprockets of the first and second transmission components.

[0012] Preferably, the U-shaped toothed plate is sleeved with the outer side of the bridge frame, the outer walls at both ends of the U-shaped toothed plate are slidably sleeved with the inner walls on both sides of the rectangular hole, and the inner walls at both ends of the U-shaped toothed plate are circumferentially meshed with the driven gear.

[0013] Preferably, multiple equidistant jet pipes are fixedly arranged at opposite ends of the two jet frames, and multiple equidistant jet channels are arranged at opposite ends of the two jet vanes.

[0014] Preferably, a first air pipe is fixedly connected between the output end of each group of air pumps and the top of the jet frame, and a second air pipe is fixedly connected between the output end of each group of air pumps and the input end of the blower plate, and a booster valve is fixedly installed around the circumference of the second air pipe.

[0015] Preferably, a reciprocating cylinder is rotatably installed on the outer side of the bottom end of each jet frame and the middle of the top end of the jet plate.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The PCB board processing device proposed in this invention has a rectangular frame at the top of the processing tank, and a bridge and a movable frame slidably mounted at the bottom of the rectangular frame. When the movable frame lifts the PCB board held by the clamping member from the chemical tank and / or spray tank with the extension and retraction of the hydraulic push rod, the distance sensor monitors the distance between the bridge and the movable frame. The second and third transmission components work together to make the driving gear drive two driven gears to rotate. The U-shaped toothed plate moves the spray frame and the flow-lifting plate downward along the rectangular hole. The air pump works in conjunction to make the airflow sprayed by the spray frame and the flow-lifting plate blow the chemical solution on the surface of the PCB board downward, accelerating the downward flow and back dripping of the chemical solution. Similarly, it can also accelerate the downward flow and back dripping of the cleaning water. This can reduce chemical waste, avoid chemical dilution and pollution, and improve the cleaning spraying efficiency. In addition, the reciprocating cylinder can make the flow-lifting plate cyclically adjust the air outlet angle, and the pressure boosting valve can make the air outlet speed of the flow-lifting plate faster, further enhancing the effect of removing liquid from the PCB board.

[0018] 2. The PCB board processing device proposed in this invention has a guide tooth plate fixedly installed between the bottom ends of the two ends of a rectangular frame, and the bottom end of the circumference of the traveling gear meshes with the top end of the guide tooth plate. When the drive motor works, the traveling gear can move the bridge and the moving frame along the guide tooth plate. At the same time, two moving sleeves move along the rectangular frame. The extension and retraction of two hydraulic push rods can make the moving frame move up and down with multiple sets of clamping parts and the PCB board, so as to achieve the immersion effect of the PCB board in the chemical tank and the spray tank. The two T-shaped rods help to enhance the stability of the moving frame when it moves up or down, and the support spring helps to control the speed and reset of the moving frame. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a PCB board processing device proposed in this invention;

[0020] Figure 2 This is a schematic diagram of the rectangular frame structure of a PCB board processing device proposed in this invention;

[0021] Figure 3 This is a schematic diagram of the structure of a PCB board processing device bridge proposed in this invention;

[0022] Figure 4 This is a schematic diagram of the moving frame of a PCB board processing device proposed in this invention;

[0023] Figure 5 This is a bottom view of the moving frame of a PCB board processing device proposed in this invention.

[0024] Figure 6 This is a schematic diagram of the structure of a U-shaped toothed plate in a PCB board processing device proposed in this invention;

[0025] Figure 7 This is a bottom view of the flow plate structure of a PCB board processing device proposed in this invention.

[0026] In the diagram: 1. Treatment tank, 2. Chemical tank, 3. Spray tank, 4. Rectangular frame, 5. Guide toothed plate, 6. Moving sleeve, 7. T-shaped rod, 8. Support spring, 9. Bridge frame, 10. Moving frame, 11. Distance sensor, 12. Side plate, 13. Hydraulic push rod, 14. Travel gear, 15. Drive motor, 16. Roller, 17. Mounting cavity, 18. Rectangular opening, 19. Bidirectional threaded rod, 20. Clamping component, 21. First transmission assembly, 22. Rectangular hole, 23. Drive gear, 24. Driven gear, 25. Second transmission assembly, 26. U-shaped toothed plate, 27. L-shaped plate, 28. Spray frame, 29. Flow booster plate, 30. Reciprocating cylinder, 31. Third transmission assembly, 32. Air pump, 33. First air pipe, 34. Second air pipe, 35. Pressure booster valve, 36. Jet pipe. Detailed Implementation

[0027] Reference Figure 1-7 A PCB board processing device includes a processing tank 1, which contains multiple chemical tanks 2 and spray tanks 3 arranged alternately. A rectangular frame 4 is mounted at the top of the processing tank 1. Movable sleeves 6 are slidably fitted onto both sides of the top of the rectangular frame 4. A bridge frame 9 is fixedly installed between the opposite ends of two movable sleeves 6. Hydraulic push rods 13 are fixedly installed on both sides of the bottom of the bridge frame 9. A movable frame 10 is fixedly installed between the movable bottom ends of two hydraulic push rods 13. A distance sensor 11 is fixedly installed in the middle of the top of the movable frame 10. Multiple sets of clamping parts 20 are provided at the bottom of the movable frame 10. The movable frame 10 has openings on both sides. A rectangular hole 22 is provided. A drive gear 23 is rotatably installed in the middle of the rectangular hole 22. Driven gears 24 are rotatably installed at both ends of the rectangular hole 22. The circumference of the drive gear 23 in each group meshes with the circumference of the two driven gears 24. A U-shaped toothed plate 26 is provided between the inner walls at both ends of each rectangular hole 22 and the opposite ends of the circumference of the two driven gears 24. L-shaped plates 27 are fixedly connected to the bottom ends of the U-shaped toothed plate 26. A jet frame 28 is fixedly installed at the bottom end of each row of two L-shaped plates 27. A blower plate 29 is rotatably installed at the opposite ends of the bottom ends of the two jet frames 28. An air pump 32 is fixedly installed in the middle of the outer wall at the opposite ends of the two jet frames 28.

[0028] In this invention, side plates 12 are fixedly installed on both sides of the bottom end of the bridge frame 9, and a traveling gear 14 is rotatably installed on the upper end of the opposite end of the two side plates 12. Rollers 16 are rotatably installed on both ends of the lower end of the opposite end of the two side plates 12. A guide tooth plate 5 is fixedly installed between the bottom ends of the two ends of the rectangular frame 4, and the bottom circumference of the traveling gear 14 meshes with the top end of the guide tooth plate 5. The top circumference of the two rollers 16 is in contact with the bottom end of the guide tooth plate 5. A drive motor 15 is fixedly installed on the input end of the traveling gear 14. By working with the drive motor 15, the traveling gear 14 can move the bridge frame 9 and the moving frame 10 along the guide tooth plate 5. At the same time, the two moving sleeves 6 move along the rectangular frame 4. The extension and retraction of the two hydraulic push rods 13 can make the moving frame 10 move up and down with multiple sets of clamping parts 20 and the PCB board, so as to achieve the immersion effect of the PCB board in the chemical tank 2 and the spray tank 3. The two T-shaped rods 7 help to enhance the stability of the moving frame 10 when it moves up or down. The support spring 8 helps the moving frame 10 control the speed and reset.

[0029] A T-shaped rod 7 is fixedly installed at the bottom middle of the two movable sleeves 6, and the two sides of the movable frame 10 are slidably sleeved with the T-shaped rod 7. A support spring 8 is fixedly installed between the circumference of the T-shaped rod 7 and the movable frame 10.

[0030] The movable frame 10 has a mounting cavity 17 inside, and the bottom of the mounting cavity 17 has multiple equally spaced rectangular openings 18. Multiple equally spaced bidirectional threaded rods 19 are rotatably mounted inside the mounting cavity 17. The two ends of the bidirectional threaded rods 19 are rotatably mounted to two clamping members 20, and each bidirectional threaded rod 19 is located at the top of the rectangular openings 18 in the same column. A first transmission assembly 21 is provided between the input ends of the multiple bidirectional threaded rods 19. Through the transmission of the first transmission assembly 21, the multiple bidirectional threaded rods 19 can be rotated, thereby causing multiple sets of clamping members 20 to clamp the PCB board, so as to achieve the purpose of processing multiple PCB boards at one time.

[0031] Each rectangular hole 22 is located between the hydraulic push rod 13 and the T-shaped rod 7 in the same row, and the two jet frames 28 are located on the outer sides of both ends of the moving frame 10 respectively;

[0032] A second transmission assembly 25 is provided on the outer wall of one end of the movable frame 10. Both the first transmission assembly 21 and the second transmission assembly 25 are composed of multiple sprockets and transmission chains connected together. A third transmission assembly 31 is provided between the two sprockets of the second transmission assembly 25 and the two driving gears 23, and the third transmission assembly 31 is an intersecting shaft gear transmission. A driving component is fixedly installed at the input end of one of the sprockets of the first transmission assembly 21 and the second transmission assembly 25. Through the transmission of the second transmission assembly 25, the third transmission assembly 31 can be driven, thereby causing the driving gear 23 to drive the two driven gears 24 to rotate. The U-shaped toothed plate 26, along with the spray frame 28 and the booster plate 29, can be moved downward along the rectangular hole 22. The air pump 32 works in conjunction to make the airflow sprayed by the spray frame 28 and the booster plate 29 blow the liquid on the PCB board surface downward, accelerating the downward flow and dripping of the liquid. Similarly, it can also accelerate the downward flow and dripping of the cleaning water. This can reduce the waste of liquid and avoid the dilution and contamination of the liquid, and also improve the cleaning spray efficiency. In addition, the reciprocating cylinder 30 can make the booster plate 29 adjust the air outlet angle in a cycle, and the pressure booster valve 35 can make the air outlet speed of the booster plate 29 faster, further enhancing the effect of removing liquid from the PCB board.

[0033] The U-shaped toothed plate 26 is sleeved on the outside of the bridge frame 9. The outer walls at both ends of the U-shaped toothed plate 26 are slidably sleeved with the inner walls on both sides of the rectangular hole 22. The inner walls at both ends of the U-shaped toothed plate 26 are circumferentially meshed with the driven gear 24.

[0034] Two jet frames 28 are fixedly provided with multiple jet pipes 36 at equal intervals at opposite ends, and two jet boosters 29 are provided with multiple jet channels at equal intervals at opposite ends;

[0035] A first air pipe 33 is fixedly connected between the output end of each air pump 32 and the top of the jet frame 28, and a second air pipe 34 is fixedly connected between the output end of each air pump 32 and the input end of the blower plate 29, and a booster valve 35 is fixedly installed around the circumference of the second air pipe 34.

[0036] Each jet frame 28 has a reciprocating cylinder 30 rotatably mounted on the outer bottom end and the middle top of the jet plate 29.

[0037] Working principle: A rectangular frame 4 is set at the top of the treatment tank 1, and a bridge 9 and a moving frame 10 are slidably set at the bottom of the rectangular frame 4. When the moving frame 10 extends and retracts with the hydraulic push rod 13, it lifts the PCB board held by the clamping member 20 from the chemical tank 2 and / or the spray tank 3. The distance sensor 11 detects the distance between the bridge 9 and the moving frame 10. The second transmission component 25 and the third transmission component 31 work together to make the driving gear 23 drive the two driven gears 24 to rotate. The U-shaped toothed plate 26 carries the spray frame 28 and the jetting plate 2. 9. Moving downwards along the rectangular hole 22, the air pump 32 works in conjunction, causing the airflow from the spray frame 28 and the blower plate 29 to blow the liquid on the PCB board surface downwards, accelerating the downward flow and dripping of the liquid. Similarly, it can also accelerate the downward flow and dripping of the cleaning water, which can reduce the waste of liquid and avoid the dilution and pollution of the liquid, and also improve the cleaning spray efficiency. In addition, the reciprocating cylinder 30 can make the blower plate 29 adjust the air outlet angle in a cycle, and the pressure booster valve 35 can make the air outlet speed of the blower plate 29 faster, further enhancing the effect of removing liquid from the PCB board.

[0038] Guide toothed plates 5 are fixedly installed between the bottom ends of the rectangular frame 4, and the bottom circumference of the traveling gear 14 meshes with the top of the guide toothed plate 5. When the drive motor 15 works, the traveling gear 14 can move the bridge frame 9 and the moving frame 10 along the guide toothed plate 5. At the same time, the two moving sleeves 6 move along the rectangular frame 4. The extension and retraction of the two hydraulic push rods 13 can make the moving frame 10 move up and down with multiple sets of clamping parts 20 and PCB board, so as to achieve the immersion effect of the PCB board inside the chemical tank 2 and the spray tank 3. The two T-shaped rods 7 help to enhance the stability of the moving frame 10 when it moves up or down, and the support spring 8 helps the moving frame 10 control the speed and reset.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A PCB board processing apparatus, comprising a processing tank (1), wherein the processing tank (1) is provided with a plurality of chemical tanks (2) and spray tanks (3), and the plurality of chemical tanks (2) and spray tanks (3) are arranged alternately, and a rectangular frame (4) is provided at the top of the processing tank (1), characterized in that, The rectangular frame (4) has movable sleeves (6) slidably fitted on both sides of its top end, and a bridge frame (9) is fixedly installed between the opposite ends of the two movable sleeves (6). Hydraulic push rods (13) are fixedly installed on both sides of the bottom end of the bridge frame (9), and a movable frame (10) is fixedly installed between the movable bottom ends of the two hydraulic push rods (13). A distance sensor (11) is fixedly installed in the middle of the top of the movable frame (10). Multiple sets of clamping parts (20) are provided at the bottom of the movable frame (10). Rectangular holes (22) are opened on both sides of the movable frame (10). A drive gear (23) is rotatably installed in the middle of the rectangular hole (22). The internal end of the rectangular hole (22) is rotatably mounted with driven gears (24), and the circumference of the driving gear (23) of each group meshes with the circumference of the two driven gears (24). A U-shaped toothed plate (26) is provided between the inner wall of each end of the rectangular hole (22) and the opposite ends of the circumference of the two driven gears (24). An L-shaped plate (27) is fixedly connected to the bottom end of the U-shaped toothed plate (26). A jet frame (28) is fixedly mounted at the bottom end of each row of two L-shaped plates (27), and a jet pump (29) is rotatably mounted at the opposite ends of the bottom ends of the two jet frames (28). An air pump (32) is fixedly mounted in the middle of the outer wall of the opposite ends of the two jet frames (28).

2. The PCB board processing apparatus according to claim 1, characterized in that, Side plates (12) are fixedly installed on both sides of the bottom end of the bridge frame (9), and a traveling gear (14) is rotatably installed on the upper end of the opposite end of the two side plates (12). Rollers (16) are rotatably installed on both ends of the lower end of the opposite end of the two side plates (12). A guide tooth plate (5) is fixedly installed between the bottom ends of both ends of the rectangular frame (4), and the bottom circumference of the traveling gear (14) meshes with the top end of the guide tooth plate (5). The top circumference of the two rollers (16) is in contact with the bottom end of the guide tooth plate (5). A drive motor (15) is fixedly installed on the input end of the traveling gear (14).

3. The PCB board processing apparatus according to claim 1, characterized in that, A T-shaped rod (7) is fixedly installed at the middle of the bottom of the two movable sleeves (6), and the two sides of the movable frame (10) are slidably sleeved with the T-shaped rod (7). A support spring (8) is fixedly installed between the circumference of the T-shaped rod (7) and the movable frame (10).

4. The PCB board processing apparatus according to claim 1, characterized in that, The movable frame (10) is provided with an installation cavity (17), and the bottom end of the installation cavity (17) is provided with multiple rectangular openings (18) at equal distances. Multiple bidirectional threaded rods (19) at equal distances are rotatably installed inside the installation cavity (17). The two ends of the bidirectional threaded rods (19) are rotatably installed with two clamping parts (20), and each bidirectional threaded rod (19) is located at the top of the rectangular openings (18) in the same column. A first transmission assembly (21) is provided between the input ends of multiple bidirectional threaded rods (19).

5. The PCB board processing apparatus according to claim 3, characterized in that, Each of the rectangular holes (22) is located between the hydraulic push rods (13) and T-shaped rods (7) in the same row, and the two jet frames (28) are located on the outer sides of the two ends of the movable frame (10).

6. The PCB board processing apparatus according to claim 4, characterized in that, The outer wall of one end of the movable frame (10) is provided with a second transmission component (25), and both the first transmission component (21) and the second transmission component (25) are composed of multiple sprockets and transmission chains connected together. A third transmission component (31) is provided between the two sprockets of the second transmission component (25) and the two drive gears (23), and the third transmission component (31) is an intersecting shaft gear transmission. A drive component is fixedly installed at the input end of one of the sprockets of the first transmission component (21) and the second transmission component (25).

7. The PCB board processing apparatus according to claim 1, characterized in that, The U-shaped toothed plate (26) is sleeved on the outside of the bridge frame (9), the outer walls of both ends of the U-shaped toothed plate (26) are slidably sleeved on the inner walls of both sides of the rectangular hole (22), and the inner walls of both ends of the U-shaped toothed plate (26) are circumferentially meshed with the driven gear (24).

8. The PCB board processing apparatus according to claim 1, characterized in that, Multiple jet pipes (36) are fixedly arranged at equal distances at opposite ends of the two jet frames (28), and multiple jet channels are arranged at equal distances at opposite ends of the two jet vanes (29).

9. The PCB board processing apparatus according to claim 1, characterized in that, A first air pipe (33) is fixedly connected between the output end of each air pump (32) and the top of the jet frame (28), and a second air pipe (34) is fixedly connected between the output end of each air pump (32) and the input end of the blower plate (29), and a booster valve (35) is fixedly installed on the circumference of the second air pipe (34).

10. A PCB board processing apparatus according to claim 1, characterized in that, Each jet frame (28) has a reciprocating cylinder (30) rotatably mounted on the outer bottom of the jet frame (28) and the middle top of the jet plate (29).

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