A display PCB circuit board wet etching machine

Abstract

This application relates to the field of PCB circuit board processing technology and discloses a wet etching machine for display PCB circuit boards, including a machine body, an adjustment mechanism, two sets of circuit board clamping mechanisms, and a rinsing mechanism. A mounting groove is formed at the center of the top of the machine body, an etching chamber is formed on the left side of the top of the machine body to hold acidic copper chloride etching solution, and a rinsing chamber is formed on the right side of the top of the machine body. The etching chamber and the rinsing chamber are symmetrically distributed on the left and right sides of the mounting groove. The adjustment mechanism is mounted on the machine body. Both sets of circuit board clamping mechanisms are mounted on the adjustment mechanism and are symmetrically distributed. This application has the following advantages and effects: it can simultaneously etch and clean multiple PCB circuit boards, ensures comprehensive and efficient rinsing of the PCB circuit boards without blind spots, and allows the etching and rinsing processes to be carried out in parallel, rationally allocating and utilizing working time, and significantly improving work efficiency.

Description

Technical Field

[0001] This application relates to the field of PCB circuit board processing technology, and in particular to a wet etching machine for display PCB circuit boards. Background Technology

[0002] PCB circuit boards are the core carrier of display hardware circuits. The etching process is a key step in PCB production to form conductive lines, requiring an etching machine. Its principle is to dissolve excess copper foil without resist film protection on the surface of the copper-clad laminate using an etching solution, retaining only the pre-set circuitry and pads. The efficiency and cleanliness of wet etching directly determine the precision of the display PCB circuitry and the yield rate of the finished product.

[0003] In existing technologies, traditional wet etching machines for display PCB circuit boards are mostly single-station structures with only a single etching chamber. Because etching solution remains on the surface of the etched PCB circuit boards, the etching and rinsing processes cannot be carried out simultaneously. After one batch of PCB circuit boards is etched, it is necessary to wait for manual transfer and rinsing before the next batch can be etched. The etching waiting time and rinsing time overlap, resulting in low equipment capacity utilization, unreasonable work time allocation, long production cycles, and low work efficiency when processing large batches of PCB circuit boards. Therefore, we propose a wet etching machine for display PCB circuit boards to solve the above problems. Summary of the Invention

[0004] The purpose of this application is to provide a wet etching machine for display PCB circuit boards, which can simultaneously etch and clean multiple PCB circuit boards, ensure comprehensive and efficient rinsing of PCB circuit boards without rinsing blind spots, and allow the etching and rinsing processes to be carried out in parallel, thus rationally allocating and utilizing working time and significantly improving work efficiency.

[0005] The above-mentioned technical objective of this application is achieved through the following technical solution: a wet etching machine for display PCB circuit boards, comprising a body, an adjustment mechanism, two sets of circuit board clamping mechanisms, and a rinsing mechanism; a mounting groove is provided at the center of the top of the body, an etching chamber is provided on the left side of the top of the body for holding acidic copper chloride etching solution, and a rinsing chamber is provided on the right side of the top of the body, the etching chamber and the rinsing chamber being symmetrically distributed on the left and right sides of the mounting groove; the adjustment mechanism is provided on the body; both sets of circuit board clamping mechanisms are provided on the adjustment mechanism and are symmetrically distributed, the adjustment mechanism is used to adjust the height and position of the circuit board clamping mechanisms, and the circuit board clamping mechanisms are used to clamp multiple PCB circuit boards simultaneously; the rinsing mechanism is provided in the rinsing chamber, and the rinsing mechanism is used to simultaneously rinse the multiple PCB circuit boards after etching.

[0006] Optionally, the adjustment mechanism includes a motor, a column, two crossbeams, two L-shaped hangers, two electric actuators, and an angle sensor; the motor is fixedly installed on the bottom inner wall of the mounting groove; the column is fixedly installed on the output shaft end of the motor, with the top of the column extending outside the mounting groove; both crossbeams are fixedly installed on the top of the column and are symmetrically distributed; the two L-shaped hangers are respectively fixedly installed on the top of the corresponding crossbeams; the two electric actuators are respectively fixedly installed on the corresponding L-shaped hangers; and the angle sensor is fixedly installed on the column and located inside the mounting groove.

[0007] Optionally, a cover plate is fixedly fitted on the column, and the bottom of the cover plate is slidably and sealingly fitted with the top of the machine body.

[0008] Optionally, reinforcing plates are fixedly installed on both sides of the column, the bottom of the two reinforcing plates is fixedly connected to the top of the cover plate, and the top of the two reinforcing plates is fixedly connected to the bottom of the corresponding crossbeam.

[0009] Optionally, both sets of circuit board clamping mechanisms include a horizontal plate, two L-shaped brackets, two electric push rods, a pressure sensor, an H-shaped lifting plate, multiple U-shaped rods, multiple movable clamping strips, and multiple fixed clamping strips. The horizontal plate is fixedly installed on the telescopic ends of the two electric push rods. The two L-shaped brackets are fixedly installed on the top of the horizontal plate and are symmetrically arranged. The electric push rod is fixedly installed on one end of the two L-shaped brackets that is close to each other. The pressure sensor is fixedly installed on the telescopic end of the electric push rod. The H-shaped lifting plate is fixedly installed on the bottom of the pressure sensor. The multiple U-shaped rods are fixedly installed in two rows on the left and right sides of the H-shaped lifting plate, and the multiple U-shaped rods slide through the horizontal plate. The multiple movable clamping strips are located below the horizontal plate and are evenly distributed, and the two ends of the movable clamping strips are fixedly connected to one end of the corresponding U-shaped rod. The multiple fixed clamping strips are fixedly installed at the bottom of the horizontal plate and are evenly distributed, and the multiple fixed clamping strips are located directly above the corresponding movable clamping strips. The bottom of the multiple fixed clamping strips and the top of the multiple movable clamping strips are provided with clamping grooves.

[0010] Optionally, the top of the H-shaped lifting plate has two clearance holes, and two L-shaped brackets pass through the corresponding clearance holes.

[0011] Optionally, the rinsing mechanism includes a hollow water distribution plate, a water inlet pipe, a solenoid valve, multiple spray pipes, and multiple spherical nozzles; the hollow water distribution plate is fixedly installed on the right inner wall of the rinsing chamber; the water inlet pipe is fixedly connected to the right side of the hollow water distribution plate, and the right end of the water inlet pipe extends to the outside of the machine body; the solenoid valve is fixedly installed on the water inlet pipe; multiple spray pipes are all fixedly connected to the left side of the hollow water distribution plate, and the multiple spray pipes are arranged in an array; multiple spherical nozzles are fixedly installed on multiple spray pipes and are evenly distributed, and the spherical nozzles located on the same spray pipe are symmetrically distributed in two rows.

[0012] Optionally, heat dissipation channels are provided on both the front and rear sides of the body, and both heat dissipation channels are connected to the mounting slot.

[0013] Optionally, a drain pipe is fixedly installed on the left side of the machine body, the drain pipe is connected to the etching chamber, and a drain valve is fixedly installed on the drain pipe.

[0014] Optionally, a drain pipe is fixedly installed on the right side of the machine body, and the drain pipe is connected to the rinsing chamber.

[0015] The operating steps of the wet etching machine for the display PCB circuit board in this application are as follows:

[0016] S1: Complete the pre-processing of the PCB circuit board in advance, apply anti-corrosion dry film or photosensitive adhesive to the copper line area of ​​the PCB circuit board that needs to be retained to form an anti-corrosion protective layer, and add an appropriate amount of acidic copper chloride etching solution into the etching chamber. Connect the water inlet pipe to the high-pressure clean water pipeline, and connect the sewage pipe of the etching chamber and the drainage pipe of the rinsing chamber to the waste liquid and sewage recovery tank respectively. Check the power supply status of the equipment and confirm that the equipment is fault-free and in standby mode.

[0017] S2: Manually place multiple display PCB circuit boards to be etched vertically between the fixed and movable clamping bars of the left-side circuit board clamping mechanism. Control the electric push rod two to retract and rise, driving the pressure sensor and H-shaped lifting plate to move upward synchronously. The H-shaped lifting plate lifts all the movable clamping bars upward and closes them to the corresponding fixed clamping bars through the U-shaped rod, so that the clamping slots clamp the PCB circuit boards. The pressure sensor collects the clamping pressure in real time. After reaching the preset safety threshold, the electric push rod two stops moving, completing the synchronous and stable clamping of multiple PCB circuit boards to avoid damage or board falling off.

[0018] S3: Control the left electric push rod to extend downwards, causing the left circuit board clamping mechanism and the firmly clamped PCB circuit board to descend vertically and be completely immersed in the acidic copper chloride etching solution in the etching chamber. This allows the PCB circuit board to be immersed in the etching solution for etching reaction. Excess copper foil without protective film is corroded and dissolved, leaving only the conductive lines with the anti-etching layer. During the etching reaction, the operation of step S2 is executed simultaneously to clamp and fix another batch of PCB circuit boards to be etched on the right circuit board clamping mechanism, completing the material preparation work before etching.

[0019] S4: After the etching reaction is completed, control the left electric push rod to retract and reset, lift the etched PCB circuit board away from the etching liquid surface, and then start the motor to drive the column to rotate. The angle sensor monitors the rotation angle in real time. After the column rotates precisely 180°, control the motor to stop working, so that the two sets of circuit board clamping mechanisms complete the work position exchange. The original etched PCB circuit board on the left is located above the rinsing chamber, and the PCB circuit board prepared on the right is located above the etching chamber on the left.

[0020] S5: Control the extension of the electric actuator on the left to immerse the prepared PCB circuit board to be etched into the etching solution in the etching chamber, starting a new round of etching reaction. Control the extension of the electric actuator on the right to send the etched PCB circuit board into the rinsing chamber. Open the solenoid valve to send high-pressure clean water into the hollow water distribution plate, which is then distributed to multiple nozzles in the array. Finally, the water is sprayed out through multiple spherical nozzles to spray and rinse the PCB circuit board from all directions. The clean water thoroughly rinses away the residual acidic copper chloride etching solution on the board surface, terminating the corrosion reaction. The rinsing wastewater is discharged through the drain pipe.

[0021] S6: After rinsing, close the solenoid valve, control the right electric push rod one to retract and reset, lift the cleaned PCB circuit board to the top of the rinsing chamber, drive the right electric push rod two to extend and run, push the H-shaped lifting plate and U-shaped rod to drive the movable clamping bar to descend, release the PCB circuit board in the clamping groove, and then take out the rinsed PCB circuit board to complete the single batch material removal.

[0022] S7: Repeat steps S2-S6 to continuously complete the PCB circuit board clamping, etching, station switching, rinsing, and material unloading cycle to achieve uninterrupted batch processing.

[0023] This application includes at least one of the following beneficial technical effects:

[0024] This application designs a circuit board clamping mechanism that can securely clamp and fix multiple PCB circuit boards at the same time, so as to etch and process multiple PCB circuit boards at the same time, and to clean multiple etched PCB circuit boards at the same time. The design also includes an adjustment mechanism that can adjust the height of the two sets of circuit board clamping mechanisms separately, and can also interchange the positions of the two sets of circuit board clamping mechanisms.

[0025] This application designs a rinsing mechanism that can simultaneously rinse and clean multiple etched PCB circuit boards, ensuring comprehensive and efficient rinsing of the PCB circuit boards without any blind spots, and quickly removing residual acidic copper chloride etching solution adhering to the surface of the PCB circuit boards.

[0026] This application designs an adjustment mechanism that works in conjunction with two sets of circuit board clamping mechanisms and a rinsing mechanism. By using a motor to drive the column to rotate precisely 180°, the positions of the two sets of circuit board clamping mechanisms can be interchanged and adjusted. This allows one set of circuit board clamping mechanisms to immerse and etch the PCB circuit board in the etching chamber while the other set of circuit board clamping mechanisms completes a thorough water wash of the PCB circuit board in the rinsing chamber. This ensures that the etching and rinsing processes can be carried out in parallel, rationally allocating and utilizing working time, and significantly improving work efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0029] Figure 2 This is a front view sectional three-dimensional structural schematic diagram of this embodiment.

[0030] Figure 3 This is a three-dimensional structural diagram of the adjustment mechanism and the two sets of circuit board clamping mechanisms.

[0031] Figure 4 This is a three-dimensional structural diagram of the adjustment mechanism.

[0032] Figure 5 This is a top-view three-dimensional structural diagram of the circuit board clamping mechanism.

[0033] Figure 6 This is a bottom-view three-dimensional structural diagram of the circuit board clamping mechanism.

[0034] Figure 7 This is a three-dimensional structural diagram of the rinsing mechanism.

[0035] In the diagram: 1. Body; 2. Mounting slot; 3. Etching chamber; 4. Flushing chamber; 5. Adjustment mechanism; 51. Motor; 52. Column; 53. Crossbeam; 54. L-shaped hanger; 55. Electric actuator one; 56. Angle sensor; 57. Cover plate; 58. Reinforcing plate; 6. Circuit board clamping mechanism; 61. Horizontal plate; 62. L-shaped bracket; 63. Electric actuator two; 64. Pressure sensor; 65. H-shaped lifting plate; 66. U-shaped rod; 67. Movable clamping bar; 68. Fixed clamping bar; 69. Clamping groove; 610. Clearance hole; 7. Flushing mechanism; 71. Hollow water distribution plate; 72. Water inlet pipe; 73. Solenoid valve; 74. Spray pipe; 75. Ball nozzle; 8. Heat dissipation channel; 9. Sewage pipe; 10. Sewage valve; 11. Drain pipe. Detailed Implementation

[0036] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0037] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 This application provides a wet etching machine for display PCB circuit boards, including a body 1, an adjustment mechanism 5, two sets of circuit board clamping mechanisms 6, and a rinsing mechanism 7. A mounting groove 2 is provided at the top center of the body 1, an etching chamber 3 is provided on the top left side of the body 1, the etching chamber 3 is used to hold acidic copper chloride etching solution, and a rinsing chamber 4 is provided on the top right side of the body 1. The etching chamber 3 and the rinsing chamber 4 are symmetrically distributed on the left and right sides of the mounting groove 2. The adjustment mechanism 5 is mounted on the body 1. Both sets of circuit board clamping mechanisms 6 are mounted on the adjustment mechanism 5 and are symmetrically distributed. The adjustment mechanism 5 is used to adjust the height and position of the circuit board clamping mechanisms 6. The height and position of the two sets of circuit board clamping mechanisms 6 can be adjusted separately, or the positions of the two sets of circuit board clamping mechanisms 6 can be interchanged. The circuit board clamping mechanisms 6 are used to clamp multiple PCB circuit boards simultaneously. The rinsing mechanism 7 is located in the rinsing chamber 4 and is used to simultaneously rinse the etched multiple PCB circuit boards.

[0038] In this embodiment, the adjustment mechanism 5 includes a motor 51, a column 52, two crossbeams 53, two L-shaped hangers 54, two electric actuators 55, and an angle sensor 56. The motor 51 is fixedly installed on the bottom inner wall of the mounting groove 2. The column 52 is fixedly installed on the output shaft end of the motor 51, and the top end of the column 52 extends outside the mounting groove 2. The two crossbeams 53 are both fixedly installed on the top end of the column 52 and are symmetrically distributed. The two L-shaped hangers 54 are respectively fixedly installed on the top of the corresponding crossbeams 53. The two electric actuators 55 are respectively fixedly installed on the corresponding L-shaped hangers 54. The angle sensor 56 is fixedly installed on the column 52 and located inside the mounting groove 2. The motor 51 is a reversible servo motor used to drive the column 52 to rotate, so that the two crossbeams 53 and the two L-shaped hangers 55 can rotate. The frame 54 and two electric actuators 55 rotate accordingly. The rotation angle of the column 52 can be detected by the angle sensor 56, which ensures that the column 52 rotates 180° every time the motor 51 rotates forward or backward. This ensures that one set of circuit board clamping mechanisms 6 is located directly above the etching chamber 3 and the other set is located directly above the rinsing chamber 4, thus realizing dual-station operation. During the etching process, multiple PCB circuit boards clamped and fixed on one set of circuit board clamping mechanisms 6 are sent into the etching chamber 3, while multiple PCB circuit boards etched on the other set of circuit board clamping mechanisms 6 are sent into the rinsing chamber 4 for comprehensive rinsing. This rational allocation of working time improves work efficiency.

[0039] In this embodiment, a cover plate 57 is fixedly sleeved on the column 52. The bottom of the cover plate 57 is slidably and sealed to the top of the body 1. The cover plate 57 is used to seal and cover the top opening of the mounting groove 2 to prevent acidic copper chloride etching solution and rinsing water from entering the mounting groove 2 and causing the motor 51 to corrode or become damp.

[0040] In this embodiment, reinforcing plates 58 are fixedly installed on both sides of the column 52. The bottom of the two reinforcing plates 58 is fixedly connected to the top of the cover plate 57, and the top of the two reinforcing plates 58 is fixedly connected to the bottom of the corresponding crossbeam 53. By using the two reinforcing plates 58, the stability and load-bearing strength of the crossbeam 53 can be improved.

[0041] In this embodiment, both sets of circuit board clamping mechanisms 6 include a horizontal plate 61, two L-shaped brackets 62, electric push rods 63, a pressure sensor 64, an H-shaped lifting plate 65, multiple U-shaped rods 66, multiple movable clamping bars 67, and multiple fixed clamping bars 68. The horizontal plate 61 is fixedly installed on the telescopic ends of the two electric push rods 65. The two L-shaped brackets 62 are fixedly installed on the top of the horizontal plate 61 and are symmetrically arranged. The electric push rods 63 are fixedly installed on the ends of the two L-shaped brackets 62 that are close to each other. The pressure sensor 64 is fixedly installed on the telescopic end of the electric push rods 63. The H-shaped lifting plate 65 is fixedly installed on the bottom of the pressure sensor 64. The multiple U-shaped rods 66 are fixedly installed in two rows on the left and right sides of the H-shaped lifting plate 65, and the multiple U-shaped rods 66 slide through the horizontal plate 61. The multiple movable clamping bars 67 are located below the horizontal plate 61 and are evenly distributed. Both ends are fixedly connected to one end of the corresponding U-shaped rod 66; multiple fixed clamping bars 68 are fixedly installed at the bottom of the horizontal plate 61 and are evenly distributed. The multiple fixed clamping bars 68 are located directly above the corresponding movable clamping bars 67. Clamping grooves 69 are provided at the bottom of the multiple fixed clamping bars 68 and the top of the multiple movable clamping bars 67. An electric push rod 63 is used to drive the H-shaped lifting plate 65 to rise and fall vertically, so that the multiple U-shaped rods 66 rise and fall synchronously with the H-shaped lifting plate 65. This allows adjustment of the height of the multiple movable clamping bars 67 and changes the distance between the movable clamping bars 67 and the fixed clamping bars 68. This is suitable for effectively clamping PCB circuit boards of various sizes. A pressure sensor 64 is used to detect the clamping force applied to the PCB circuit board by the movable clamping bars 67 in real time, avoiding excessive clamping force that could damage the PCB circuit board, and also avoiding insufficient clamping force that would result in an unreliable clamping of the PCB circuit board. Figure 5 As shown, electric actuator 263 is in the extended state.

[0042] In this embodiment, the top of the H-shaped lifting plate 65 has two clearance holes 610, and two L-shaped brackets 62 pass through the corresponding clearance holes 610 respectively. The design of the clearance holes 610 can ensure that the H-shaped lifting plate 65 can smoothly lift vertically.

[0043] In this embodiment, the rinsing mechanism 7 includes a hollow water distribution plate 71, a water inlet pipe 72, a solenoid valve 73, multiple spray pipes 74, and multiple spherical nozzles 75. The hollow water distribution plate 71 is fixedly installed on the right inner wall of the rinsing chamber 4. The water inlet pipe 72 is fixedly connected to the right side of the hollow water distribution plate 71, and the right end of the water inlet pipe 72 extends to the outside of the body 1. The solenoid valve 73 is fixedly installed on the water inlet pipe 72. The multiple spray pipes 74 are all fixedly connected to the left side of the hollow water distribution plate 71, and the multiple spray pipes 74 are arranged in an array. The multiple spherical nozzles 75 are fixedly installed on the multiple spray pipes 74 and are evenly distributed. The spherical nozzles 75 located on the same spray pipe 74 are symmetrically distributed in two rows. The right end of the water inlet pipe 72 is fixedly connected to an external clean water pressure pipe. The system is connected to the hollow water distribution plate 71 via the inlet pipe 72. The water is then distributed into multiple nozzles 74, allowing water to be sprayed from multiple spherical nozzles 75. This achieves a comprehensive and efficient rinsing and cleaning of the etched PCB circuit boards, removing residual acidic copper chloride etching solution from the PCB circuit board surface. It should be noted that the multiple nozzles 74 and multiple movable clamps 67, located on the same horizontal plane, are arranged in a staggered manner to ensure that the etched PCB circuit boards can smoothly enter the rinsing chamber 4, preventing the PCB circuit boards from colliding with the nozzles 74 and spherical nozzles 75. The water sprayed from the spherical nozzles 75 can thoroughly rinse and clean the PCB circuit boards.

[0044] In this embodiment, heat dissipation channels 8 are provided on both the front and rear sides of the body 1. Both heat dissipation channels 8 are connected to the mounting slot 2. The design of the heat dissipation channels 8 helps the air to circulate and facilitates the heat dissipation of the motor 51.

[0045] In this embodiment, a drain pipe 9 is fixedly installed on the left side of the body 1. The drain pipe 9 is connected to the etching chamber 3. A drain valve 10 is fixedly installed on the drain pipe 9. The design of the drain pipe 9 and the drain valve 10 facilitates the discharge of the acidic copper chloride etching solution in the etching chamber 3, so as to facilitate the replacement of the acidic copper chloride etching solution. A drain pipe 11 is fixedly installed on the right side of the body 1. The drain pipe 11 is connected to the rinsing chamber 4. The drain pipe 11 is used to discharge the wastewater generated by rinsing the PCB circuit board. The drain pipe 11 is fixedly connected to an external recycling box, so that the wastewater can be collected and reprocessed in a unified manner.

[0046] In this embodiment, the motor 51, the two electric actuators 55, the angle sensor 56, the two electric actuators 63, the two pressure sensors 64, and the solenoid valve 73 are all electrically connected to the external controller. The wiring connection method and control method are conventional technical means that can be reasonably selected and implemented by those skilled in the art based on their ordinary technical knowledge without creative labor, so they will not be described in detail here.

[0047] Based on the above structure, the working principle of the wet etching machine for display PCB circuit boards provided in this application is as follows:

[0048] Coat the copper foil portion of the outer layer of the PCB circuit board to be processed with a layer of photosensitive material (such as photosensitive adhesive or resist dry film), pre-fill the etching chamber 3 with an appropriate amount of acidic copper chloride etching solution, and after the preparation work is completed, the PCB circuit board etching process can be carried out.

[0049] First, multiple PCBs to be etched are manually placed vertically between the fixed clamping bar 68 and the movable clamping bar 67 located below the left-side PCB clamping mechanism 6. The electric push rod 63 is controlled to retract and reset, which drives the pressure sensor 64 and the H-shaped lifting plate 65 to rise. The H-shaped lifting plate 65 drives multiple U-shaped rods 66 and multiple movable clamping bars 67 to rise, so that the movable clamping bars 67 move upward to close to the fixed clamping bar 68. The clamping groove 69 clamps the PCB. During this process, the pressure sensor 64 collects the clamping pressure in real time. After the preset safety pressure is reached, the electric push rod 63 stops running to prevent damage to the PCB. This completes the synchronous clamping of multiple PCBs.

[0050] Then, control the extension of the electric push rod 55 on the left side, which will drive the circuit board clamping mechanism 6 on the left side and the multiple PCB circuit boards clamped and fixed to descend vertically into the etching chamber 3. The multiple PCB circuit boards are vertically immersed in the acidic copper chloride etching solution in the etching chamber 3. When the multiple PCB circuit boards are completely submerged, stop the operation of the electric push rod 55. The etching reaction can be performed on multiple PCB circuit boards at the same time to remove excess copper foil and form circuits.

[0051] During the etching reaction of multiple PCB circuits on the left circuit board clamping mechanism 6, according to the above operating principle, multiple PCB circuit boards to be etched are manually picked up and clamped and fixed on the right circuit board clamping mechanism 6, thus completing the preparation work before etching.

[0052] After the PCB board etching reaction on the left-side circuit board clamping mechanism 6 is completed, the left-side electric push rod 55 is retracted and reset, lifting the left-side circuit board clamping mechanism 6 and the etched PCB board back to the top of the machine body 1. Then, the motor 51 is controlled to rotate forward or reverse, driving the column 52 to rotate, causing the two crossbeams 53, two L-shaped hangers 54, two electric push rods 55, and two sets of circuit board clamping mechanisms 6 to rotate synchronously. At the same time, when the angle sensor 56 detects that the column 52 has rotated 180°, the motor 51 stops running. At this time, the positions of the two sets of circuit board clamping mechanisms 6 are swapped by 180°, so that the etched PCB board is located above the rinsing chamber 4, and the PCB board to be etched is located above the etching chamber 3. Then, the two electric push rods 55 are controlled to extend, lowering the two sets of circuit board clamping mechanisms 6 into the etching chamber 3 and the rinsing chamber 4 respectively. The PCB board entering the etching chamber 3 continues to undergo etching. By opening the solenoid valve 73, high-pressure clean water flows into the hollow water distribution plate 71, then is distributed to multiple nozzles 74 arranged in an array, and finally sprayed out from multiple spherical nozzles 75. This sprays and rinses all the PCB circuit boards that have been etched in the rinsing chamber 4 from all directions, cleaning the acidic etching solution remaining on the surface of the PCB circuit boards. After rinsing, the solenoid valve 73 is closed, and the electric push rod 55 on the right side is controlled to retract and reset, which can lift the circuit board clamping mechanism 6 and the rinsed PCB circuit boards to the top of the machine body 1. Then, the electric push rod 63 on the right side is controlled to extend and run, pushing the pressure sensor 64 and the H-shaped lifting plate 65 to rise, and multiple U-shaped rods 66 and multiple movable clamping bars 67 to descend, so that multiple rinsed PCB circuit boards can be removed. Following the above operating principle, multiple PCB circuit boards to be etched are manually picked up and clamped and fixed on the circuit board clamping mechanism 6 on the right side, which can once again prepare for the etching process, thus realizing the parallel operation of etching and rinsing processes.

[0053] The above provides a detailed description of a wet etching machine for display PCB circuit boards provided in this application. Specific embodiments have been used to illustrate the principles and implementation methods of this application. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A wet etching machine for display PCB circuit boards, characterized in that, include: The body (1) has an installation groove (2) at the top center, an etching cavity (3) on the top left side of the body (1) for holding acidic copper chloride etching solution, and a rinsing cavity (4) on the top right side of the body (1). The etching cavity (3) and the rinsing cavity (4) are symmetrically distributed on the left and right sides of the installation groove (2). An adjustment mechanism (5) is provided on the body (1); Two sets of circuit board clamping mechanisms (6) are both set on the adjustment mechanism (5) and are symmetrically distributed. The adjustment mechanism (5) is used to adjust the height and position of the circuit board clamping mechanism (6). The circuit board clamping mechanism (6) is used to clamp multiple PCB circuit boards at the same time. A rinsing mechanism (7) is provided in the rinsing chamber (4). The rinsing mechanism (7) is used to rinse multiple PCB circuit boards that have been etched at the same time.

2. The wet etching machine for display PCB circuit boards according to claim 1, characterized in that, The adjustment mechanism (5) includes: The motor (51) is fixedly installed on the bottom inner wall of the mounting slot (2); A column (52) is fixedly installed at the output shaft end of the motor (51), and the top end of the column (52) extends outside the mounting groove (2); Two crossbeams (53) are fixedly installed at the top of the column (52) and are symmetrically distributed; Two L-shaped hangers (54) are fixedly installed on the top of the corresponding crossbeams (53); Two electric actuators (55) are fixedly installed on the corresponding L-shaped hangers (54); An angle sensor (56) is fixedly installed on the column (52) and located in the mounting groove (2).

3. The wet etching machine for a display PCB circuit board according to claim 2, characterized in that, A cover plate (57) is fixedly fitted on the column (52), and the bottom of the cover plate (57) slides and seals against the top of the body (1).

4. The wet etching machine for display PCB circuit boards according to claim 3, characterized in that, The two sides of the column (52) are fixedly installed with reinforcing plates (58), the bottom of the two reinforcing plates (58) are fixedly connected to the top of the cover plate (57), and the top of the two reinforcing plates (58) are fixedly connected to the bottom of the corresponding crossbeam (53).

5. A wet etching machine for display PCB circuit boards according to claim 2, characterized in that, Both sets of the circuit board clamping mechanisms (6) include: A horizontal plate (61) is fixedly installed at the telescopic end of the two electric actuators (55); Two L-shaped brackets (62) are fixedly installed on the top of the horizontal plate (61) and arranged symmetrically; Electric actuator 2 (63) is fixedly installed at one end of the two L-shaped brackets (62) that are close to each other; A pressure sensor (64) is fixedly installed at the telescopic end of the electric actuator (63); The H-shaped lifting plate (65) is fixedly installed at the bottom of the pressure sensor (64); Multiple U-shaped rods (66) are fixedly installed in two rows on the left and right sides of the H-shaped lifting plate (65), and all of the multiple U-shaped rods (66) slide through the horizontal plate (61). Multiple movable clamps (67) are located below the horizontal plate (61) and are distributed at equal intervals. The two ends of the movable clamps (67) are respectively fixedly connected to one end of the corresponding U-shaped rod (66). Multiple fixed clamping strips (68) are fixedly installed at the bottom of the horizontal plate (61) and are distributed at equal intervals. The multiple fixed clamping strips (68) are respectively located directly above the corresponding movable clamping strips (67). The bottom of the multiple fixed clamping strips (68) and the top of the multiple movable clamping strips (67) are provided with clamping grooves (69).

6. The wet etching machine for a display PCB circuit board according to claim 5, characterized in that, The top of the H-shaped lifting plate (65) has two clearance holes (610), and the two L-shaped brackets (62) pass through the corresponding clearance holes (610).

7. A wet etching machine for display PCB circuit boards according to claim 1, characterized in that, The rinsing mechanism (7) includes: A hollow water distribution plate (71) is fixedly installed on the inner right side wall of the flushing chamber (4); The water inlet pipe (72) is fixedly connected to the right side of the hollow water distribution plate (71), and the right end of the water inlet pipe (72) extends to the outside of the body (1); A solenoid valve (73) is fixedly installed on the water inlet pipe (72); Multiple nozzles (74) are fixedly connected to the left side of the hollow water distribution plate (71), and the multiple nozzles (74) are arranged in an array; Multiple spherical nozzles (75) are fixedly installed on multiple nozzles (74) and are evenly distributed. The spherical nozzles (75) located on the same nozzle (74) are symmetrically distributed in two rows.

8. A wet etching machine for display PCB circuit boards according to claim 1, characterized in that, The front and rear sides of the body (1) are provided with heat dissipation channels (8), and both heat dissipation channels (8) are connected to the mounting slot (2).

9. A wet etching machine for display PCB circuit boards according to claim 1, characterized in that, A drain pipe (9) is fixedly installed on the left side of the body (1). The drain pipe (9) is connected to the etching cavity (3). A drain valve (10) is fixedly installed on the drain pipe (9).

10. A wet etching machine for display PCB circuit boards according to claim 1, characterized in that, A drain pipe (11) is fixedly installed on the right side of the body (1), and the drain pipe (11) is connected to the flushing chamber (4).

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