Etching machine and etching process method for PCB (printed circuit board) processing

Abstract

The invention belongs to the technical field of PCB (printed circuit board) processing, particularly relates to an etching machine for PCB processing and an etching process method, and provides the following scheme aiming at prolonging the etching time of a PCB and reducing the etching effect due to the fact that part of copper foil is not completely etched because etching liquid is easily and incompletely contacted with the PCB: the etching machine comprises an etching box body; the observation window is arranged on one side of the etching box body; the feeding conveying roller and the discharging conveying roller are respectively arranged at a feeding hole and a discharging hole of the etching box body; and the etching auxiliary module is arranged in the etching box body. According to the etching machine for PCB processing and the etching process method disclosed by the invention, the etching liquid is enabled to be in complete contact with the PCB, and the situation that part of copper foil is not completely etched, residues are left, and the conductivity of a circuit and the integrity of the circuit are influenced is avoided, so that the etching time of the PCB is shortened, and the etching effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB board processing, and particularly relates to an etching machine and an etching process method for PCB board processing. Background Art

[0002] The Chinese name of PCB is printed circuit board, also known as printed wiring board. It is an important electronic component, a support for electronic components, and a carrier for the electrical connection of electronic components. Etching is to remove the unnecessary copper layer through chemical reaction to form the required circuit pattern. Through continuous improvement and the development of process equipment, it can also be used for the processing of precision-etched products of electronic thin parts in the fields of aviation, machinery, and chemical industry. Especially in the semiconductor manufacturing process, etching is an indispensable technology.

[0003] The existing PCB board etching is mainly completed by contacting the PCB board with the alkaline etching solution. Since the etching solution is likely to be in incomplete contact with the PCB board when spraying the etching solution, some copper foils cannot be completely etched off, leaving residues, which affects the electrical conductivity of the circuit and the integrity of the circuit, thereby increasing the etching time of the PCB board and reducing the etching effect. Summary of the Invention

[0004] The present invention discloses an etching machine and an etching process method for PCB board processing, aiming to solve the technical problem that the etching solution is likely to be in incomplete contact with the PCB board in the background art, resulting in some copper foils not being completely etched off, thereby increasing the etching time of the PCB board and reducing the etching effect.

[0005] An etching machine for PCB board processing proposed by the present invention includes an etching box body; An observation window, which is arranged on one side of the etching box body; An etching auxiliary module, which is arranged inside the etching box body. The etching auxiliary module includes a conveying frame, and circular holes 1 are equidistantly arranged on both sides of the conveying frame. The same conveying roller is connected through bearings inside the opposite two circular holes 1. One ends of multiple conveying rollers are fixedly connected with linkage gears. The two linkage gears on the same side are meshed with each other. The outer parts of the multiple conveying rollers on the upper side are fixedly connected with linkage belt pulleys. The outer parts of the multiple linkage belt pulleys are drivingly connected with the same belt 1. One side of the conveying frame is fixedly connected with a driving box, and the driving end of the driving box is connected to one end of one of the conveying rollers through a coupling. Through the etching auxiliary module, the etching solution is in complete contact with the PCB board, avoiding some copper foils not being completely etched off and leaving residues, which affects the electrical conductivity of the circuit and the integrity of the circuit, thereby reducing the etching time of the PCB board and improving the etching effect.

[0006] In a preferred embodiment, the etching auxiliary module further includes a tooling support plate, which is fixedly connected to the inside of the etching box body. On the side of the tooling support plate facing the conveying frame, support seats are fixedly connected at equal intervals. Two limiting round holes are provided on one side of each of the plurality of support seats. Limiting cylinders are slidably connected inside the plurality of limiting round holes. One ends of the limiting cylinders on the same side are fixedly connected to the same shaking support frame. Two reset springs I are fixedly connected to both sides of the two shaking support frames. One side of the reset spring I is fixedly connected to one side of the support seat. The reset spring I is wound around the outside of the limiting cylinder. The feed inlet and the discharge outlet of the etching box body are respectively provided with a feed conveying roller and a discharge conveying roller.

[0007] In a preferred embodiment, two guiding cylinders are fixedly connected to the opposite sides of the two shaking support frames. A vibration support block is slidably connected to the outside of the two guiding cylinders on the same shaking support frame. Two reset springs II are fixedly connected to both sides of the two vibration support blocks. One side of the reset spring II is fixedly connected to one side of the shaking support frame. The reset spring II is wound around the outside of the guiding cylinder.

[0008] In a preferred embodiment, round holes II are provided on one side of each of the two vibration support blocks. Rotary round rods are connected to the inside of the two round holes II through bearings. Cams are fixedly connected to one ends of the two rotary round rods. Driving motors are fixedly connected to the sides of the two vibration support blocks away from the cams. The driving ends of the driving motors are connected to one side of the rotary round rods through couplings. Two tooling fixing rods are bolted to one side of each of the two vibration support blocks. One side of the tooling fixing rod is fixedly connected to one side of the conveying frame.

[0009] In a preferred embodiment, through holes are provided at equal intervals on both sides of the conveying frame. Clamping cylinders are slidably connected inside the plurality of through holes. Rubber clamping plates are fixedly connected to one ends of the plurality of clamping cylinders. The same telescopic spring is fixedly connected to the opposite sides of the plurality of clamping cylinders and the conveying frame. The telescopic spring is wound around the outside of the clamping cylinder. Two limiting rods are fixedly connected to one side of each of the plurality of through holes. The same guiding wheel I is connected to one side of the two limiting rods on the same side through a bearing. Guiding wheels II are movably connected at equal intervals on both sides of the conveying frame. Round holes III are provided on both sides of the conveying frame. The same rotary cylinder is connected to the inside of the two round holes III through a bearing. Winding discs are fixedly connected to the outside of the rotary cylinder at equal intervals. Winding ropes are fixedly connected to one ends of the plurality of clamping cylinders. The other ends of the winding ropes are wound inside the winding discs. A U-shaped mounting seat is fixedly connected to one side of the conveying frame. A winding motor is fixedly connected to one side of the U-shaped mounting seat. The winding end of the winding motor is connected to one side of the rotary cylinder through a coupling.

[0010] In a preferred embodiment, a spraying module is disposed inside the etching box body, and the spraying module includes a limiting block. Circular holes four are equally spaced on both sides of the etching box body. The same spraying delivery pipe is connected inside the two opposite circular holes four through bearings. A plurality of spraying nozzles are equally spaced on the outer part of the plurality of spraying delivery pipes, and spraying heads are fixedly connected inside the plurality of spraying nozzles.

[0011] In a preferred embodiment, one end of each of the plurality of spraying delivery pipes is fixedly connected with a belt pulley, and the outer parts of the plurality of belt pulleys are drivingly connected with the same second belt. A two-way motor is disposed on one side of the outer part of the etching box body. The driving end of the two-way motor is connected to one end of one of the spraying delivery pipes through a coupling. One side of each of the plurality of limiting blocks is fixedly connected with a shunt pipe, and the shunt pipe is movably connected inside the spraying delivery pipe.

[0012] In a preferred embodiment, one end of each of the plurality of shunt pipes is fixedly connected with the same hollow delivery frame. A pump body is fixedly connected to one side of the outer part of the etching box body. The discharge end of the pump body is connected to the inside of the hollow delivery frame through a connecting pipe. The feed end of the pump body is connected to the lower inside of the etching box body through a circulation pipe. A chute is opened on one side of the etching box body, and a sieve plate is slidably connected inside the chute. The sieve plate is located below the tooling support plate.

[0013] In a preferred embodiment, tooling cover plates are connected to both sides of the etching box body through hinges.

[0014] A using method of an etching machine for PCB board processing, using the etching machine for PCB board processing as described above, includes the following steps: Step 1: The PCB board is conveyed into the inside of the conveying frame through the feed conveying roller of the etching box body. When the PCB board moves to the area to be sprayed with etching solution, start the winding motor, drive the rotating cylinder to rotate through the winding motor, and unwind the winding rope body through the winding disc on the rotating cylinder, so as to realize the reset through the elasticity of the telescopic spring, and flexibly clamp and fix the PCB board through the rubber clamping plate at one end of the clamping cylinder. Step 2: Then spray the etching solution on the PCB board. Start the driving motor, drive the rotating round rod through the driving motor to make the cam rotate. When the cam rotates, at this time, the first reset spring and the limiting cylinder limit the shaking support frame left and right, and the second reset spring and the guiding cylinder limit the vibrating support block up and down, so that the PCB board on the conveying frame vibrates left and right and up and down when contacting the etching solution, thereby improving the permeability of the etching solution to the PCB board. Step 3: After the etching is completed, release the clamping and fixing of the PCB, and then start the drive box to convey the PCB board into the discharge conveying roller through the conveying roller for discharging.

[0015] As can be seen from the above, an etching machine for PCB board processing provided by the present invention enables the etching solution to come into complete contact with the PCB board, avoiding incomplete etching of some copper foils and leaving residues, which affects the electrical conductivity of the circuit and the integrity of the circuit, thereby reducing the etching time of the PCB board and improving the beneficial effect of etching. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic diagram of the main structure of an etching machine for PCB board processing proposed by the present invention; Figure 2 FIG. is a schematic side view structure diagram of an etching machine for PCB board processing proposed by the present invention; Figure 3 FIG. is a schematic front view structure diagram of an etching machine for PCB board processing proposed by the present invention; Figure 4 FIG. is a schematic diagram of the etching auxiliary module structure of an etching machine for PCB board processing proposed by the present invention; Figure 5 FIG. is a partial structure schematic diagram of the etching auxiliary module of an etching machine for PCB board processing proposed by the present invention; Figure 6 FIG. is a schematic diagram of the conveying frame structure of an etching machine for PCB board processing proposed by the present invention; Figure 7 is Figure 5 an enlarged structure schematic diagram of part A; Figure 8 is Figure 5 an enlarged structure schematic diagram of part B; Figure 9 FIG. is a schematic diagram of the spraying module structure of an etching machine for PCB board processing proposed by the present invention; Figure 10 FIG. is a partial structure schematic diagram of the spraying module of an etching machine for PCB board processing proposed by the present invention.

[0017] In the figure: 1, etching box body; 2, observation window; 3, feeding conveying roller; 4, discharging conveying roller; 5, tooling cover plate; 6, etching auxiliary module; 601, tooling support plate; 602, conveying frame; 603, conveying roller; 604, belt one; 605, linkage gear; 606, drive box; 607, U-shaped mounting seat; 608, winding motor; 609, rotating cylinder; 610, winding disc; 611, winding rope body; 612, limiting rod; 613, guide wheel one; 614, guide wheel two; 615, clamping cylinder; 616, telescopic spring; 617, rubber clamping plate; 618, support seat; 619, limiting cylinder; 620, reset spring one; 621, shaking support frame; 622, vibration support block; 623, tooling fixing rod; 624, drive motor; 625, guide cylinder; 626, reset spring two; 627, rotating round rod; 628, cam; 7, spraying module; 701, sieve plate; 702, spraying conveying pipe; 703, spray head; 704, belt pulley; 705, belt two; 706, hollow conveying frame; 707, limiting block; 708, shunt pipe; 709, connecting pipe; 710, pump body; 711, circulation pipe; 712, bidirectional motor. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] An etching machine for PCB board processing disclosed by the present invention is mainly applied to the scenario where the etching solution is not easily in complete contact with the PCB board, resulting in incomplete etching of some copper foils, thereby increasing the etching time of the PCB board and reducing the etching effect.

[0020] Refer to Figures 1 - 8 , an etching machine for PCB board processing, including an etching box body 1; An observation window 2, and the observation window 2 is arranged on one side of the etching box body 1; The etching assistance module 6 is arranged inside the etching box body 1. The etching assistance module 6 includes a conveying frame 602. Circular holes one are equidistantly arranged on both sides of the conveying frame 602, and the same conveying roller 603 is connected inside opposite two circular holes one through bearings. One end of each of the plurality of conveying rollers 603 is fixedly connected with a linkage gear 605. Two linkage gears 605 on the same side are meshed with each other. Linkage belt pulleys are fixedly connected to the outside of the plurality of conveying rollers 603 on the upper side, and the outside of the plurality of linkage belt pulleys is drivingly connected with the same belt one 604. One side of the conveying frame 602 is fixedly connected with a driving box 606. The driving end of the driving box 606 is connected to one end of one of the conveying rollers 603 through a coupling. Through the etching assistance module 6, the etching solution can be in complete contact with the PCB board, avoiding that some copper foils cannot be completely etched away, leaving residues, which affects the electrical conductivity of the circuit and the integrity of the circuit, thereby reducing the etching time of the PCB board and improving the etching effect.

[0021] Refer to Figures 1 - 8 Moreover, the etching assistance module 6 further includes a tooling support plate 601, and the tooling support plate 601 is fixedly connected inside the etching box body 1. Support seats 618 are fixedly connected equidistantly on one side of the tooling support plate 601 facing the conveying frame 602. Two limiting circular holes are opened on one side of each of the plurality of support seats 618, and limiting cylinders 619 are slidably connected inside the plurality of limiting circular holes. One end of each of the plurality of limiting cylinders 619 on the same side is fixedly connected with the same shaking support frame 621. Two reset springs one 620 are fixedly connected to both sides of the two shaking support frames 621. One side of the reset spring one 620 is fixedly connected to one side of the support seat 618. The reset spring one 620 is wound around the outside of the limiting cylinder 619. The feeding conveying roller 3 and the discharging conveying roller 4 are respectively arranged at the feeding port and the discharging port of the etching box body 1.

[0022] Refer to Figures 1 - 8 Moreover, two guiding cylinders 625 are fixedly connected to the opposite sides of the two shaking support frames 621, and the same vibration support block 622 is slidably connected to the outside of the two guiding cylinders 625 on the same shaking support frame 621. Two reset springs two 626 are fixedly connected to both sides of the two vibration support blocks 622. One side of the reset spring two 626 is fixedly connected to one side of the shaking support frame 621. The reset spring two 626 is wound around the outside of the guiding cylinder 625.

[0023] Refer to Figures 1 - 8, on one side of each of the two vibration support blocks 622, round holes two are provided, and inside each of the two round holes two, a rotating round rod 627 is connected through a bearing. At one end of each of the two rotating round rods 627, a cam 628 is fixedly connected. On the side of each of the two vibration support blocks 622 away from the cam 628, a driving motor 624 is fixedly connected. The driving end of the driving motor 624 is connected to one side of the rotating round rod 627 through a coupling. On one side of each of the two vibration support blocks 622, two tooling fixing rods 623 are connected by bolts, and one side of the tooling fixing rod 623 is fixedly connected to one side of the conveying frame 602.

[0024] Refer to Figures 1 - 8 , on both sides of the conveying frame 602, through holes are equidistantly provided, and inside each of the multiple through holes, a clamping cylinder 615 is slidably connected. At one end of each of the multiple clamping cylinders 615, a rubber clamping plate 617 is fixedly connected. On the opposite side of each of the multiple clamping cylinders 615 and the conveying frame 602, the same telescopic spring 616 is fixedly connected. The telescopic spring 616 surrounds the outside of the clamping cylinder 615. On one side of each of the multiple through holes, two limiting rods 612 are fixedly connected. On one side of the two limiting rods 612 on the same side, the same guide wheel one 613 is connected through a bearing. On both sides of the conveying frame 602, guide wheels two 614 are movably connected at equal distances. On both sides of the conveying frame 602, round holes three are provided. Inside the two round holes three, the same rotating cylinder 609 is connected through a bearing. On the outside of the rotating cylinder 609, winding discs 610 are fixedly connected at equal distances. At one end of each of the multiple clamping cylinders 615, a winding rope body 611 is fixedly connected. The other end of the winding rope body 611 is wound inside the winding disc 610. On one side of the conveying frame 602, a U-shaped mounting seat 607 is fixedly connected. On one side of the U-shaped mounting seat 607, a winding motor 608 is fixedly connected. The winding end of the winding motor 608 is connected to one side of the rotating cylinder 609 through a coupling.

[0025] In a specific application scenario, the PCB board is conveyed into the interior of the conveying frame 602 through the feeding conveying roller 3 of the etching box body 1. When the PCB board moves to the area where the etching solution is to be sprayed, the winding motor 608 is started. The rotation cylinder 609 is driven to rotate by the winding motor 608, and the winding rope body 611 is unwound through the winding disc 610 on the rotation cylinder 609, so that the reset is realized through the elasticity of the telescopic spring 616. The PCB board is flexibly clamped and fixed by the rubber clamping plate 617 at one end of the clamping cylinder 615. Then, the etching solution is sprayed on the PCB board. The driving motor 624 is started, and the rotation round bar 627 is driven by the driving motor 624 to make the cam 628 rotate. When the cam 628 rotates, at this time, the first reset spring 620 and the limit cylinder 619 limit the shaking support frame 621 left and right, and the second reset spring 626 and the guiding cylinder 625 limit the vibration support block 622 up and down, so that the PCB board on the conveying frame 602 vibrates left and right and up and down when contacting the etching solution, thereby improving the permeability of the etching solution to the PCB board. After the etching is completed, the clamping and fixing of the PCB is released, and then the driving box 606 is started. The PCB board is conveyed into the discharging conveying roller 4 through the conveying roller 603 for discharging. Through the etching auxiliary module 6, the etching solution contacts the PCB board completely, avoiding that some copper foils are not completely etched off, leaving residues, which affect the conductivity of the circuit and the integrity of the circuit, thereby reducing the etching time of the PCB board and improving the etching effect.

[0026] Refer to Figure 1 、 Figure 9 and Figure 10 As shown in FIGS.

[0027] Refer to Figure 1 、 Figure 9 and Figure 10 As shown in FIGS.

[0028] Refer to Figure 1 、 Figure 4 、 Figure 9 and Figure 10, one end of multiple shunt pipes 708 is fixedly connected to the same hollow conveying frame 706. One side of the outside of the etching box body 1 is fixedly connected with a pump body 710. The discharging end of the pump body 710 is connected to the inside of the hollow conveying frame 706 through a connecting pipe 709. The feeding end of the pump body 710 is connected to the lower inside of the etching box body 1 through a circulating pipe 711. A sliding groove is formed on one side of the etching box body 1. A sieve plate 701 is slidably connected inside the sliding groove. The sieve plate 701 is located below the tooling support plate 601.

[0029] In a specific application scenario, when spraying the etching solution, at this time, the pump body 710 sucks the etching solution at the bottom of the etching box body 1, transports the etching solution to the inside of the hollow conveying frame 706 through the connecting pipe 709, transports the etching solution to the inside of the spraying conveying pipe 702 through multiple shunt pipes 708, and then sprays the etching solution onto the PCB board through multiple spray heads 703. At the same time, the bidirectional motor 712 is started, and one of the spraying conveying pipes 702 is driven to rotate bidirectionally through the bidirectional motor 712, so that the belt two 705 drives the remaining spraying conveying pipes 702 to rotate bidirectionally at the same time, so that the etching solution uniformly covers the surface of the PCB board, ensuring the etching uniformity. At the same time, the reacted solution is filtered through the sieve plate 701 for secondary utilization of the etching solution.

[0030] Refer to Figure 1 , both sides of the etching box body 1 are connected with tooling cover plates 5 through hinges.

[0031] A using method of an etching machine for PCB board processing, using an etching machine for PCB board processing as described above, including the following steps: Step 1: The PCB board is transported to the inside of the conveying frame 602 through the feeding conveying roller 3 of the etching box body 1. When the PCB board moves to the area to be sprayed with the etching solution, the winding motor 608 is started, the rotating cylinder 609 is driven to rotate through the winding motor 608, and the winding rope body 611 on the winding disc 610 on the rotating cylinder 609 is unwound, so that the telescopic spring 616 realizes reset through its telescopic property, and the rubber clamping plate 617 at one end of the clamping cylinder 615 realizes flexible clamping and fixing of the PCB board; Step 2: Then, the etching solution is sprayed on the PCB board. The driving motor 624 is started, the rotating round rod 627 is driven by the driving motor 624 to make the cam 628 rotate. When the cam 628 rotates, at this time, the first reset spring 620 and the limiting cylinder 619 realize left and right limits for the shaking support frame 621, and the second reset spring 626 and the guiding cylinder 625 realize up and down limits for the vibrating support block 622, so that the PCB board on the conveying frame 602 vibrates left and right and up and down when contacting the etching solution, thereby improving the permeability of the etching solution to the PCB board; Step 3: After the etching is completed, release the clamping and fixing of the PCB, and then start the driving box 606 to convey the PCB to the discharge conveying roller 4 through the conveying roller 603 for discharging.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An etching machine for PCB board processing, characterized in that, Including an etching box body (1); An observation window (2), the observation window (2) is arranged on one side of the etching box body (1); An etching auxiliary module (6), the etching auxiliary module (6) is arranged inside the etching box body (1), the etching auxiliary module (6) includes a conveying frame (602), and circular holes one are equidistantly arranged on both sides of the conveying frame (602), and the same conveying roller (603) is connected inside the two opposite circular holes one through bearings. One end of each of the plurality of conveying rollers (603) is fixedly connected with a linkage gear (605). The two linkage gears (605) on the same side are meshed with each other. Linkage pulleys are fixedly connected to the outside of the plurality of conveying rollers (603) on the upper side, and the outside of the plurality of linkage pulleys is drivingly connected with the same belt one (604). One side of the conveying frame (602) is fixedly connected with a driving box (606), and the driving end of the driving box (606) is connected to one end of one of the conveying rollers (603) through a coupling. Through the etching auxiliary module (6), the etching solution can be in complete contact with the PCB board, avoiding the situation that some copper foils cannot be completely etched and leaving residues, which affects the electrical conductivity of the circuit and the integrity of the circuit, thereby reducing the etching time of the PCB board and improving the etching effect.

2. An etching machine for PCB board processing according to claim 1, characterized in that, The etching auxiliary module (6) further includes a tooling support plate (601), and the tooling support plate (601) is fixedly connected to the inside of the etching box body (1). Support seats (618) are equidistantly fixedly connected to the side of the tooling support plate (601) facing the conveying frame (602). Two limiting circular holes are arranged on one side of each of the plurality of support seats (618), and limiting cylinders (619) are slidably connected inside the plurality of limiting circular holes. One end of the plurality of limiting cylinders (619) on the same side is fixedly connected with the same shaking support frame (621). Two reset springs one (620) are fixedly connected to both sides of the two shaking support frames (621). One side of the reset spring one (620) is fixedly connected to the side of the support seat (618), and the reset spring one (620) surrounds the outside of the limiting cylinder (619). The feeding port and the discharging port of the etching box body (1) are respectively provided with a feeding conveying roller (3) and a discharging conveying roller (4).

3. An etching machine for PCB board processing according to claim 2, characterized in that, Two guiding cylinders (625) are fixedly connected to the opposite sides of the two shaking support frames (621), and the same vibration support block (622) is slidably connected to the outside of the two guiding cylinders (625) on the same shaking support frame (621). Two reset springs two (626) are fixedly connected to both sides of the two vibration support blocks (622). One side of the reset spring two (626) is fixedly connected to the side of the shaking support frame (621), and the reset spring two (626) surrounds the outside of the guiding cylinder (625).

4. An etching machine for PCB board processing according to claim 3, characterized in that, On one side of each of the two vibration support blocks (622), a second round hole is provided, and a rotating round rod (627) is connected inside each of the two second round holes through a bearing. One end of each of the two rotating round rods (627) is fixedly connected to a cam (628). On the side of each of the two vibration support blocks (622) away from the cam (628), a driving motor (624) is fixedly connected. The driving end of the driving motor (624) is connected to one side of the rotating round rod (627) through a coupling. On one side of each of the two vibration support blocks (622), two tooling fixing rods (623) are connected by bolts, and one side of the tooling fixing rod (623) is fixedly connected to one side of the conveying frame (602).

5. An etching machine for PCB board processing according to claim 4, characterized in that, On both sides of the conveying frame (602), through holes are equidistantly provided, and a clamping cylinder (615) is slidably connected inside each of the multiple through holes. One end of each of the multiple clamping cylinders (615) is fixedly connected to a rubber clamping plate (617). On the opposite side of each of the multiple clamping cylinders (615) and the conveying frame (602), the same telescopic spring (616) is fixedly connected. The telescopic spring (616) surrounds the outside of the clamping cylinder (615). On one side of each of the multiple through holes, two limiting rods (612) are fixedly connected. On one side of the two limiting rods (612) on the same side, the same guide wheel one (613) is connected through a bearing. Guide wheels two (614) are equidistantly movably connected to both sides of the conveying frame (602). On both sides of the conveying frame (602), third round holes are provided. Inside the two third round holes, the same rotating cylinder (609) is connected through a bearing. On the outside of the rotating cylinder (609), winding discs (610) are fixedly connected equidistantly. One end of each of the multiple clamping cylinders (615) is fixedly connected to a winding rope body (611), and the other end of the winding rope body (611) is wound inside the winding disc (610). On one side of the conveying frame (602), a U-shaped mounting seat (607) is fixedly connected. On one side of the U-shaped mounting seat (607), a winding motor (608) is fixedly connected. The winding end of the winding motor (608) is connected to one side of the rotating cylinder (609) through a coupling.

6. An etching machine for PCB board processing according to claim 5, characterized in that, A spraying module (7) is arranged inside the etching box body (1), and the spraying module (7) includes a limiting block (707). On both sides of the etching box body (1), fourth round holes are equidistantly provided. Inside the two opposite fourth round holes, the same spraying conveying pipe (702) is connected through a bearing. On the outside of the multiple spraying conveying pipes (702), spraying ports are equidistantly provided. Inside each of the multiple spraying ports, a spray head (703) is fixedly connected.

7. An etching machine for PCB board processing according to claim 6, characterized in that, One end of each of the plurality of spraying and conveying pipes (702) is fixedly connected with a pulley (704), and the outside of the plurality of pulleys (704) is drivingly connected with the same second belt (705). A bidirectional motor (712) is arranged on one side of the outside of the etching box body (1). The driving end of the bidirectional motor (712) is connected to one end of one of the spraying and conveying pipes (702) through a coupling. One side of each of the plurality of limiting blocks (707) is fixedly connected with a shunt pipe (708), and the shunt pipe (708) is movably connected to the inside of the spraying and conveying pipe (702).

8. An etching machine for PCB board processing according to claim 7, characterized in that, One end of each of the plurality of shunt pipes (708) is fixedly connected with the same hollow conveying frame (706). A pump body (710) is fixedly connected to one side of the outside of the etching box body (1). The discharge end of the pump body (710) is connected to the inside of the hollow conveying frame (706) through a connecting pipe (709). The feed end of the pump body (710) is connected to the lower inside of the etching box body (1) through a circulating pipe (711). A chute is formed on one side of the etching box body (1), and a sieve plate (701) is slidably connected to the inside of the chute. The sieve plate (701) is located below the tooling support plate (601).

9. An etching machine for PCB board processing according to claim 8, characterized in that, Both sides of the etching box body (1) are connected with tooling cover plates (5) through hinges.

10. A method for using an etching machine for PCB board processing, using an etching machine for PCB board processing as described in claim 9, characterized in that, Including the following steps: Step 1: The PCB board is conveyed into the inside of the conveying frame (602) through the feed conveying roller (3) of the etching box body (1). When the PCB board moves to the area where the etching solution is to be sprayed, the winding motor (608) is started. The rotating cylinder (609) is driven to rotate by the winding motor (608). The winding rope body (611) is paid out through the winding disc (610) on the rotating cylinder (609), so that the telescopic spring (616) realizes reset through its telescopic property. The PCB board is flexibly clamped and fixed through the rubber clamping plate (617) at one end of the clamping cylinder (615). Step 2: Then, the etching solution is sprayed on the PCB board. The driving motor (624) is started. The rotating round rod (627) is driven by the driving motor (624) to make the cam (628) rotate. When the cam (628) rotates, at this time, the first reset spring (620) and the limiting cylinder (619) limit the shaking support frame (621) left and right, and the second reset spring (626) and the guiding cylinder (625) limit the vibrating support block (622) up and down, so that the PCB board on the conveying frame (602) vibrates left and right and up and down when contacting the etching solution, thereby improving the permeability of the etching solution to the PCB board. Step 3: After the etching is completed, the clamping and fixing of the PCB are released, and then the driving box (606) is started, and the PCB board is conveyed into the discharge conveying roller (4) through the conveying roller (603) for discharging.

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