Circuit board etching device

Abstract

The utility model relates to the technical field of circuit board etching, in particular to a circuit board etching device, which comprises a base, a conveying mechanism, a turnover mechanism and a plurality of atomizing nozzles, and is characterized in that the conveying mechanism comprises an adjusting assembly, two mounting seats, two first motors, two connecting assemblies and four conveying belts; the overturning mechanism comprises a driving assembly, two rotating discs and four clamping grooves, and through the arrangement of the overturning mechanism, when the circuit board on the conveying belt enters the clamping grooves in the overturning mechanism after being etched by the atomizing nozzles, the circuit board can be driven to overturn by the overturning mechanism, so that the circuit board is turned from a horizontal state to a vertical state, and the circuit board is prevented from being damaged. According to the utility model, the circuit board in the vertical state can be overturned to the horizontal rotary table again, so that the reacted etching liquid accumulated in the central area above the circuit board cannot quickly flow out of the board, the adverse effect on the circuit board caused by the accumulation phenomenon is avoided, and the circuit board in the vertical state can be overturned to the horizontal rotary table again, thereby facilitating the conveying of the circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board etching, in particular to a circuit board etching device. Background Art

[0002] Circuit board etching is a key process in manufacturing printed circuit boards (PCBs), which involves pre-plating a layer of anti-corrosion on the PCB and then removing the unwanted copper layer by chemical methods to leave the circuit pattern.

[0003] The existing Chinese utility model patent with patent announcement number CN219068518U discloses a circuit board etching device, including: a support plate, a conveying assembly, and a spray module. There are two support plates, which are arranged symmetrically, and a plurality of conveying rollers are arranged between the support plates. Two adjacent conveying rollers are connected by belts, and one of the conveying rollers is connected to the output end of the power mechanism; the conveying assembly includes a plurality of conveying rollers arranged above the conveying rollers, and both ends of the conveying rollers are sleeved with a bearing plate that moves toward each other, and the other end of the bearing plate is sleeved on the conveying roller, and the bearing plate is provided with a first roller and a second roller that rotate around its own axis respectively, the first roller is sleeved on the conveying roller, and the second roller is sleeved on the conveying roller, which is used to convey the circuit board; the spray module is arranged above the support plate.

[0004] The above-mentioned circuit board etching device has the following shortcomings:

[0005] 1. After the spray module sprays the etching liquid onto the upper surface of the circuit board, the etching liquid in the central area above the circuit board cannot flow out of the board quickly, resulting in a large amount of etching liquid remaining in the center of the board, affecting the quality of the circuit board;

[0006] 2. Only one side of the circuit board can be etched at a time. When both sides need to be etched, it is necessary to reciprocate between the two sides, which is inefficient;

[0007] In view of the above problems, a circuit board etching device is now provided. Utility Model Content

[0008] The purpose of the utility model is to provide a circuit board etching device to solve the problems raised in the above background technology.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A circuit board etching device comprises a base, a conveying mechanism, a turning mechanism and a plurality of atomizing nozzles;

[0011] The conveying mechanism includes an adjustment component, two mounting seats, two first motors, two connecting components and four conveyor belts. The two mounting seats are symmetrically arranged at the top of the base, and every two conveyor belts are installed inside a mounting seat. Each connecting component is located between two conveyor belts at the same end. The two first motors are installed on one side of one of the mounting seats. The output ends of the two first motors are respectively connected to the transmission shafts on the two conveyor belts. The adjustment component is used to adjust the positions of the two mounting seats, and the adjustment component is located between the base and the two mounting seats.

[0012] The flip mechanism includes a driving assembly, two turntables and four slots. The two turntables are symmetrically arranged between two mounting seats. The surface of each turntable is provided with two symmetrically arranged slots. The driving assembly is located between the base and the two turntables.

[0013] As a further solution of the utility model: the driving assembly includes a rotating rod, a second motor and two vertical plates;

[0014] The two vertical plates are respectively located on the sides of the two mounting seats that are away from each other. The two vertical plates are fixedly mounted on the top of the base. The rotating rod is rotatably set between the two vertical plates. The second motor is fixedly mounted on one side of one of the vertical plates. The output end of the second motor is fixedly connected to one end of the rotating rod. The two turntables are fixedly set on the rotating rod.

[0015] As a further solution of the utility model: a position sensor is provided on one side of one of the turntables, and the position sensor is installed on a vertical plate away from the side of the second motor.

[0016] As a further solution of the utility model: each connecting assembly includes a fixing seat, a rotating drum, a limiting groove and two limiting protrusions;

[0017] The fixed seat is located in the middle of one end of the two mounting seats, the fixed seat is fixedly installed on the top of the base, the rotating drum is rotatably set on the fixed seat through the bearing, the two transmission shafts on the conveyor belts on both sides are inserted into the two ends of the rotating drum at one end close to the rotating drum, and the transmission shaft is slidably set inside the rotating drum, the limiting groove is opened on the inner wall of the rotating drum, the two limiting protrusions are respectively slidably set inside the limiting groove, and the two limiting protrusions are respectively fixed on the surfaces of the two transmission shafts.

[0018] As a further solution of the utility model: the adjustment assembly includes a rotating component, two fixed frames, two bidirectional screw rods and four slide blocks;

[0019] Two fixed frames are fixedly installed on the top of the base, each bidirectional screw rod is rotatably set inside a fixed frame, each two sliders are slidably set in a fixed frame, and the two sliders are respectively sleeved on both sides of the bidirectional screw rod and matched with the bidirectional screw rod thread, the top ends of the two sliders inside the same fixed frame are respectively fixedly connected to one end of the two mounting seats, and the rotating part is located between the two bidirectional screw rods.

[0020] As a further solution of the utility model: the rotating component includes a third motor, two driven wheels, two driving wheels and two transmission belts, one end of each bidirectional screw rod passes through a fixed frame and is fixedly connected to a driven wheel, the third motor is fixedly installed on one side of the base, the two driving wheels are fixed to the output end of the third motor, and each transmission belt is sleeved on a driving wheel and a driven wheel.

[0021] As shown in Figure - Figure, two mounting frames are symmetrically installed on both sides of the top of the base, and multiple water distribution pipes arranged in two rows are installed between the two mounting frames. The two rows of water distribution pipes are respectively located above and below the mounting seat. Several atomizing nozzles are installed on the surface of each water distribution pipe, and the output end of each atomizing nozzle is arranged toward the mounting seat.

[0022] As a further solution of the utility model: two connecting pipes are provided on one side of one mounting frame, one end of multiple water distribution pipes in the same row are connected to one connecting pipe, a main pipe is provided on one side of the two connecting pipes, one end of the two connecting pipes are connected to one end of the main pipe, and the other end of the main pipe is connected to a device for conveying etching liquid.

[0023] As a further solution of the utility model: a material receiving trough is provided at the top of the base and below the turntable, and both ends of the material receiving trough extend to below the conveyor belts on both sides.

[0024] As a further solution of the utility model: an avoidance groove for avoiding the impact is provided on the upper surface of each mounting seat, and each avoidance groove is located between two conveyor belts in the middle of a mounting seat.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] 1. A circuit board etching device of the utility model is provided with a flipping mechanism. When the circuit board on the conveyor belt enters the inside of the card slot in the flipping mechanism after being etched by the atomizing nozzle, the flipping mechanism can drive the circuit board to flip, so that the circuit board is turned from a horizontal state to a vertical state, so that the etching liquid accumulated in the central area above the circuit board after the reaction cannot flow out of the board quickly, avoiding the adverse effect of the accumulation on the circuit board. At the same time, the circuit board in the vertical state can be flipped again to the horizontal turntable, which is convenient for conveying the circuit board.

[0027] 2. A circuit board etching device of the utility model can realize simultaneous etching of both sides of the circuit board by arranging multiple atomizing nozzles on the upper and lower sides of the circuit board. Compared with the prior art that can only etch one side at a time, the present application can greatly reduce the operation steps of circuit board etching, which is conducive to improving processing efficiency.

[0028] 3. A circuit board etching device of the utility model is provided with a position sensor. When the position sensor detects that the circuit board has entered into one of the slots, the position sensor sends a signal to the controller. The controller can control the second motor to rotate to realize automatic flipping, which is convenient for use.

[0029] 4. A circuit board etching device of the utility model can achieve fine adjustment of the distance between the two mounting seats by setting an adjustment component, so that the distance between the conveyor belts on both sides can be adapted to the width of the circuit board, which is convenient for etching circuit boards of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the utility model.

[0031] Figure 2 It is a structural schematic diagram of the conveying mechanism in the utility model.

[0032] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure of part A.

[0033] Figure 4 It is a structural schematic diagram of the mounting frame in the utility model.

[0034] Figure 5 It is a structural schematic diagram of the turning mechanism in the utility model.

[0035] Figure 6 It is a side view of the utility model.

[0036] Figure 7 It is a top view of the utility model.

[0037] Among them: 11. base; 12. mounting seat; 13. conveyor belt; 14. fixing seat; 15. rotating drum; 16. limiting groove; 17. limiting protrusion; 18. transmission shaft; 19. first motor; 20. avoidance groove; 21. vertical plate; 22. rotating rod; 23. turntable; 24. card slot; 25. position sensor; 26. second motor; 27. fixing frame; 28. slider; 29. ​​two-way screw rod; 30. driving wheel; 31. driven wheel; 32. transmission belt; 33. third motor; 34. mounting frame; 35. water distribution pipe; 36. atomizing nozzle; 37. main pipe; 38. connecting pipe; 39. receiving trough. DETAILED DESCRIPTION

[0038] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0039] The utility model provides the following preferred embodiments:

[0040] Embodiment 1, as Figure 1-Figure 7 As shown, a circuit board etching device includes a base 11, a conveying mechanism, a flipping mechanism and a plurality of atomizing nozzles 36;

[0041] The conveying mechanism includes an adjusting component, two mounting seats 12, two first motors 19, two connecting components and four conveyor belts 13. The two mounting seats 12 are symmetrically arranged at the top of the base 11, and every two conveyor belts 13 are installed inside a mounting seat 12. Each connecting component is located between the two conveyor belts 13 at the same end. The two first motors 19 are installed on one side of one of the mounting seats 12. The output ends of the two first motors 19 are respectively connected to the transmission shafts 18 on the two conveyor belts 13. Specifically, when in use, the controller controls the two first motors 19 to work synchronously, and the first motor 19 can drive the transmission shafts 18 output therewith when working. The transmission shaft 18 at the outlet end is fixedly connected, and the conveyor belt 13 matched with the transmission shaft 18 can realize transmission. At the same time, under the action of the two connecting components, the transmission shafts 18 on the two conveyor belts 13 on the other side can be driven to rotate, that is, the four conveyor belts 13 can realize synchronous transmission, so as to realize the transmission of the circuit board. The adjustment component is used to adjust the position of the two mounting seats 12. The adjustment component is located between the base 11 and the two mounting seats 12. The adjustment component can fine-tune the distance between the two mounting seats 12, so that the distance between the conveyor belts 13 on both sides can be adapted to the width of the circuit board, which is convenient for etching circuit boards of different widths.

[0042] The flip mechanism includes a driving assembly, two turntables 23 and four slots 24. The two turntables 23 are symmetrically arranged between the two mounting seats 12. The surface of each turntable 23 is provided with two symmetrically arranged slots 24. The driving assembly is located between the base 11 and the two turntables 23.

[0043] When working, the driving component can drive the two turntables 23 to rotate, so that the slots 24 on the turntables 23 can rotate. When the circuit board moves between two of the slots 24, when the turntable 23 rotates, it can drive the circuit board to flip, so that the circuit board is turned from a horizontal state to a vertical state, so that the etching liquid accumulated in the central area above the circuit board cannot flow out of the board quickly after the reaction, avoiding the accumulation phenomenon and causing adverse effects on the circuit board. At the same time, the circuit board in the vertical state can be flipped again to the horizontal turntable, which is convenient for conveying the circuit board.

[0044] like Figure 1-Figure 7 As shown, the driving assembly includes a rotating rod 22, a second motor 26 and two vertical plates 21;

[0045] The two vertical plates 21 are respectively located at the sides of the two mounting seats 12 that are away from each other. The two vertical plates 21 are fixedly mounted on the top of the base 11. The rotating rod 22 is rotatably arranged between the two vertical plates 21. The second motor 26 is fixedly mounted on one side of one of the vertical plates 21. The output end of the second motor 26 is fixedly connected to one end of the rotating rod 22. The two rotating disks 23 are fixedly arranged on the rotating rod 22.

[0046] When in use, in the initial state, the four slots 24 on the two turntables 23 are all arranged horizontally, that is, the circuit board on the conveyor belt 13 can be moved between two of the slots 24 when moving;

[0047] When the circuit board is inserted into the slot 24 under the action of the conveyor belt 13 after etching, the controller controls the second motor 26 to work, and the second motor 26 can drive the rotating rod 22 to rotate between the two vertical plates 21. At this time, the two rotating disks 23 can rotate, and the circuit board is turned over through the slot 24, so that the circuit board can be turned from a horizontal state to a vertical state, and then from a vertical state to a horizontal state;

[0048] When the circuit board is turned from a horizontal state to a vertical state, the etching liquid accumulated in the central area above the circuit board cannot flow out of the board quickly, avoiding the adverse effects of the accumulation on the circuit board.

[0049] When the circuit board is installed from a vertical state to a horizontal state again, the circuit board can be moved to the two conveyor belts 13 on the other side, so as to facilitate the subsequent conveying work of the circuit board.

[0050] like Figure 1-Figure 7 As shown, a position sensor 25 is provided on one side of one of the turntables 23. The position sensor 25 is installed on the vertical plate 21 away from the side of the second motor 26. In the initial state, the detection end of the position sensor 25 corresponds to one end of two of the slots 24 close to the rotating rod 22. It should be noted that in actual use, the position sensor 25 is electrically connected to the controller. When the position sensor 25 detects that the circuit board enters one of the slots 24, the position sensor 25 sends a signal to the controller, and the controller can control the second motor 26 to rotate, realize automatic flipping, and facilitate use.

[0051] like Figure 1-Figure 7 As shown, each connecting assembly includes a fixing seat 14, a rotating drum 15, a limiting groove 16 and two limiting protrusions 17;

[0052] The fixing seat 14 is located in the middle of one end of the two mounting seats 12, and the fixing seat 14 is fixedly mounted on the top of the base 11. The rotating drum 15 is rotatably mounted on the fixing seat 14 through a bearing. The two transmission shafts 18 on the conveyor belts 13 on both sides are inserted at both ends of the rotating drum 15 at one end close to the rotating drum 15, and the transmission shaft 18 is slidably mounted inside the rotating drum 15. The limiting groove 16 is provided on the inner wall of the rotating drum 15, and the two limiting protrusions 17 are respectively slidably mounted inside the limiting groove 16, and the two limiting protrusions 17 are respectively fixed on the surfaces of the two transmission shafts 18;

[0053] When the transmission shaft 18 connected to the first motor 19 rotates, due to the action of the limiting protrusion 17 and the limiting groove 16, the transmission shaft 18 can drive the rotating drum 15 to rotate inside the fixed seat 14 when rotating. At the same time, when the rotating drum 15 rotates, it can drive the transmission shaft 18 at the other end of the rotating drum 15 to rotate, so that the conveyor belt 13 at the other end of the rotating drum 15 can realize transmission;

[0054] At the same time, since the transmission shaft 18 can slide inside the rotating drum 15, the limiting protrusion 17 can slide inside the limiting groove 16, so that the two transmission shafts 18 can be telescopically moved at both ends of the rotating drum 15, so as to facilitate the subsequent adjustment of the position of the mounting seat 12, so that the conveyor belts 13 on both sides can move and rotate synchronously.

[0055] like Figure 1-Figure 7 As shown, the adjustment assembly includes a rotating component, two fixed frames 27, two bidirectional screw rods 29 and four sliders 28;

[0056] Two fixed frames 27 are fixedly installed on the top of the base 11, each bidirectional screw rod 29 is rotatably arranged inside a fixed frame 27, and each two sliders 28 are slidably arranged in a fixed frame 27, and the two sliders 28 are respectively sleeved on both sides of the bidirectional screw rod 29 and threadedly matched with the bidirectional screw rod 29, and the top ends of the two sliders 28 in the same fixed frame 27 are respectively fixedly connected to one end of the two mounting seats 12, and the rotating component is located between the two bidirectional screw rods 29;

[0057] When in use, when the rotating component is working, it can drive the two bidirectional screw rods 29 to rotate synchronously. Since the bidirectional screw rod 29 and the slider 28 are threadedly matched, and the slider 28 is slidably set in the fixed frame 27, when the bidirectional screw rod 29 rotates, it can drive the two sliders 28 to move closer to or away from each other inside the fixed frame 27, and then the position of the two mounting seats 12 can be fine-tuned, so that the distance between the conveyor belts 13 on both sides can be adapted to the width of the circuit board, which is convenient for etching circuit boards of different widths.

[0058] like Figure 1-Figure 7As shown, the rotating parts include a third motor 33, two driven wheels 31, two driving wheels 30 and two transmission belts 32, one end of each bidirectional screw rod 29 passes through the fixed frame 27 and is fixedly connected to a driven wheel 31, the third motor 33 is fixedly mounted on one side of the base 11, the two driving wheels 30 are fixed to the output ends of the third motor 33, and each transmission belt 32 is sleeved on a driving wheel 30 and a driven wheel 31;

[0059] When the distance between the two mounting seats 12 needs to be adjusted to suit the width of the circuit board, the third motor 33 is controlled to work. The third motor 33 can drive the driving wheel 30 to rotate. Under the action of the transmission belt 32, the driven wheels 31 on both sides can rotate, and then the bidirectional screw rod 29 can be driven to rotate to achieve subsequent adjustment work.

[0060] like Figure 1-Figure 7 As shown, two mounting frames 34 are symmetrically installed on both sides of the top of the base 11, and a plurality of water distribution pipes 35 arranged in two rows are installed between the two mounting frames 34. The two rows of water distribution pipes 35 are respectively located above and below the mounting seat 12, and a plurality of atomizing nozzles 36 are installed on the surface of each water distribution pipe 35. The output end of each atomizing nozzle 36 is arranged toward the mounting seat 12, that is, a plurality of atomizing nozzles 36 are arranged on the upper and lower sides of the circuit board, so that the two sides of the circuit board can be etched synchronously and evenly. Compared with the prior art that can only etch one side at a time, the present application can greatly reduce the operation steps of circuit board etching, which is beneficial to improving processing efficiency.

[0061] like Figure 1-Figure 7 As shown, two connecting pipes 38 are provided on one side of one mounting frame 34, one end of each of the multiple water distribution pipes 35 in the same row is connected to one connecting pipe 38, a main pipe 37 is provided on one side of the two connecting pipes 38, one end of each of the two connecting pipes 38 is connected to one end of the main pipe 37, and the other end of the main pipe 37 is connected to a device for conveying etching liquid;

[0062] It should be noted here that in actual use, the etching delivery equipment can be used to deliver the etching liquid to the two connecting pipes 38 through the main pipe 37, and then the etching liquid can be delivered to the atomizing nozzle 36 and sprayed onto the surface of the circuit board through the atomizing nozzle 36 using multiple water distribution pipes 35, thereby realizing the processing of the circuit board.

[0063] like Figure 1-Figure 7 As shown, a material receiving trough 39 is provided at the top of the base 11 and below the turntable 23, and both ends of the material receiving trough 39 extend to below the conveyor belts 13 on both sides. The setting of the material receiving trough 39 can collect the etching liquid flowing out when the circuit board is turned over, avoiding random flow and affecting the processing environment.

[0064] like Figure 1-Figure 7As shown, the upper surface of each mounting seat 12 is provided with an avoidance groove 20 for avoiding the rotating rod 22 . Each avoidance groove 20 is located between two conveyor belts 13 in the middle of a mounting seat 12 . Specifically, the avoidance groove 20 is used to avoid the rotating rod 22 .

[0065] The beneficial effects of the present invention are specifically embodied in that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A circuit board etching device, comprising a base (11), characterized in that: It also includes a conveying mechanism, a turning mechanism and a plurality of atomizing nozzles (36); The conveying mechanism comprises an adjustment component, two mounting seats (12), two first motors (19), two connecting components and four conveyor belts (13), the two mounting seats (12) are symmetrically arranged at the top end of the base (11), each two conveyor belts (13) are installed inside one mounting seat (12), each connecting component is located between two conveyor belts (13) at the same end, the two first motors (19) are installed on one side of one of the mounting seats (12), the output ends of the two first motors (19) are respectively connected to the transmission shafts (18) on the two conveyor belts (13), the adjustment component is used to adjust the position of the two mounting seats (12), and the adjustment component is located between the base (11) and the two mounting seats (12); The turning mechanism comprises a driving assembly, two rotating disks (23) and four card slots (24); the two rotating disks (23) are symmetrically arranged between two mounting seats (12); the surface of each rotating disk (23) is provided with two symmetrically arranged card slots (24); and the driving assembly is located between the base (11) and the two rotating disks (23).

2. A circuit board etching device according to claim 1, characterized in that: The driving assembly comprises a rotating rod (22), a second motor (26) and two vertical plates (21); The two vertical plates (21) are respectively located on the sides of the two mounting seats (12) that are away from each other. The two vertical plates (21) are fixedly mounted on the top of the base (11). The rotating rod (22) is rotatably arranged between the two vertical plates (21). The second motor (26) is fixedly mounted on one side of one of the vertical plates (21). The output end of the second motor (26) is fixedly connected to one end of the rotating rod (22). The two rotating disks (23) are fixedly arranged on the rotating rod (22).

3. A circuit board etching device according to claim 2, characterized in that: A position sensor (25) is provided on one side of one of the rotating disks (23), and the position sensor (25) is mounted on a vertical plate (21) on a side away from the second motor (26).

4. A circuit board etching device according to claim 3, characterized in that: Each connecting assembly comprises a fixing seat (14), a rotating drum (15), a limiting groove (16) and two limiting protrusions (17); The fixing seat (14) is located at the middle of one end of the two mounting seats (12), the fixing seat (14) is fixedly mounted on the top of the base (11), the rotating drum (15) is rotatably arranged on the fixing seat (14) through a bearing, the two transmission shafts (18) on the conveyor belts (13) on both sides are inserted at both ends of the rotating drum (15) at one end close to the rotating drum (15), and the transmission shaft (18) is slidably arranged inside the rotating drum (15), the limiting groove (16) is opened on the inner wall of the rotating drum (15), the two limiting protrusions (17) are respectively slidably arranged inside the limiting groove (16), and the two limiting protrusions (17) are respectively fixed on the surfaces of the two transmission shafts (18).

5. A circuit board etching device according to claim 4, characterized in that: The adjustment assembly comprises a rotating component, two fixed frames (27), two bidirectional screw rods (29) and four slide blocks (28); Two fixed frames (27) are fixedly mounted on the top of the base (11), each bidirectional screw rod (29) is rotatably arranged inside a fixed frame (27), each two sliders (28) are slidably arranged inside a fixed frame (27), and the two sliders (28) are respectively sleeved on both sides of the bidirectional screw rod (29) and threadedly matched with the bidirectional screw rod (29), the top ends of the two sliders (28) inside the same fixed frame (27) are respectively fixedly connected to one end of the two mounting seats (12), and the rotating component is located between the two bidirectional screw rods (29).

6. A circuit board etching device according to claim 5, characterized in that: The rotating component comprises a third motor (33), two driven wheels (31), two driving wheels (30) and two transmission belts (32); one end of each bidirectional screw rod (29) passes through a fixed frame (27) and is fixedly connected to a driven wheel (31); the third motor (33) is fixedly mounted on one side of the base (11); the two driving wheels (30) are fixed to the output ends of the third motor (33); and each transmission belt (32) is sleeved on a driving wheel (30) and a driven wheel (31).

7. A circuit board etching device according to claim 6, characterized in that: Two mounting frames (34) are symmetrically mounted on both sides of the top of the base (11); a plurality of water distribution pipes (35) arranged in two upper and lower rows are mounted between the two mounting frames (34); the two rows of water distribution pipes (35) are respectively located above and below the mounting seat (12); a plurality of atomizing nozzles (36) are mounted on the surface of each water distribution pipe (35); and the output end of each atomizing nozzle (36) is arranged toward the mounting seat (12).

8. A circuit board etching device according to claim 7, characterized in that: Two connecting pipes (38) are provided on one side of one of the mounting frames (34), one end of each of the plurality of water distribution pipes (35) in the same row is connected to one connecting pipe (38), a main pipe (37) is provided on one side of the two connecting pipes (38), one end of each of the two connecting pipes (38) is connected to one end of the main pipe (37), and the other end of the main pipe (37) is connected to a device for conveying etching liquid.

9. A circuit board etching device according to claim 8, characterized in that: A material receiving trough (39) is provided at the top end of the base (11) and below the rotating disk (23), and both ends of the material receiving trough (39) extend to below the conveyor belts (13) on both sides.

10. A circuit board etching device according to claim 9, characterized in that: An avoidance groove (20) for avoiding traffic is provided on the upper surface of each mounting seat (12), and each avoidance groove (20) is located between two conveyor belts (13) in the middle of a mounting seat (12).

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