Etching device for new energy vehicle printed circuit board

Abstract

The invention relates to an etching device for printed circuit boards of new energy vehicles, which is applied to the field of circuit board etching. The device comprises an etching liquid tank, which is cylindrical and is equipped with a driving motor. A rotating rod is equipped at the output end of the driving motor. A sliding assembly is installed between the rotating rod and the etching liquid tank. A linkage mechanism comprising a mounting seat, a clamp, a slow gear and a transmission assembly is installed on the sliding assembly. A slow tooth track meshing with the slow gear is installed on the inner wall of the lower half of the etching liquid tank. The driving motor drives the mounting seat to perform circular motion, which facilitates continuous etching and pick-and-place operations of the circuit board. After the circuit board moves into the etching liquid inside the etching liquid tank along with the mounting seat, the slow gear rotates under the meshing action of the slow gear and the slow tooth track. The rotating slow gear causes the clamp to rotate with the circuit board through the transmission assembly, thereby enhancing the fluidity of the etching liquid on the surface of the circuit board or in the etching tank, thereby ensuring a sufficient etching effect.

Description

Technical Field

[0001] The present invention relates to an etching device, in particular to an etching device for a new energy vehicle printed circuit board applied in the field of circuit board etching. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source. They have become widely popular today, greatly reducing exhaust emissions. As a result, many factories have begun to produce accessories for new energy vehicles, mainly including printed circuit boards, components and other major parts.

[0003] During the etching process of a printed circuit board (PCB) production line, etching liquid is required to etch the PCB. During this etching process, an etching section is provided on the PCB production line, and an etching liquid storage container is provided on the etching section to store the etching liquid. During the etching process, etching is generally performed by spraying the etching liquid onto the moving PCB. During this etching process, residual etching liquid may remain on the surface of the PCB or in the etching tank. As the etching proceeds, the concentration of the residual etching liquid gradually decreases. This results in the etching efficiency being higher when no residual etching liquid is present than when residual etching liquid is present, which in turn affects the etching quality of the PCB, resulting in a decrease in the overall quality of the PCB.

[0004] In order to improve the above problems, after searching, the patent publication number CN105208782B provides an automatic etching device for circuit boards, in which a plurality of suction holes are provided on the etching conveying roller. The suction holes are used to generate negative pressure and absorb the etching liquid on the circuit board. In this way, the etching liquid can be prevented from remaining on the surface of the circuit board or in the etching groove, thereby avoiding the problem of different local etching degrees of the circuit board, ensuring the uniformity of the circuit board etching process, and improving the etching quality of the circuit board. On this basis, the patent publication number CN117241482B discloses an etching device for circuit board production, including a conveying component, an etching component and a cleaning component. The conveying component is used to convey the circuit board, and the etching component is used to spray the etching liquid onto the circuit board on the conveying component. The conveying component includes multiple suction rollers parallel to each other, each suction roller is provided with multiple suction roller wheels, and the suction roller wheels are provided with suction holes. The cleaning component is used to clean the suction holes on the side of the suction roller away from the circuit board. The system also includes a liquid suction assembly and a control assembly. The liquid suction assembly is connected to the liquid suction holes on each liquid suction roller via a liquid suction air path. The liquid suction air path is equipped with a negative pressure sensor for detecting the suction pressure. This effectively prevents clogging of the negative pressure liquid suction holes for sucking the etching liquid, thereby improving the uniformity of the circuit board etching process.

[0005] Based on the above search and in combination with the prior art, it was found that during the etching process, the circuit boards of the existing circuit board etching devices mostly move slowly in a translational manner, and the etching liquid on the surface of the circuit board or in the etching tank has poor fluidity. As the etching progresses, the concentration of the etching liquid decreases, resulting in incomplete etching. Among them, a few adopt the liquid absorption structure disclosed above, but this structure is relatively complex and the etching energy consumption is high. Therefore, an etching device for printed circuit boards of new energy vehicles is proposed to improve the above-mentioned problems. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that during the etching process of the existing circuit board etching device, the circuit board mostly moves slowly in a translational manner, and the etching liquid on the surface of the circuit board or in the etching tank has poor fluidity. As the etching proceeds, the concentration of the etching liquid decreases, resulting in incomplete etching.

[0007] To solve the above problems, the present invention provides an etching device for printed circuit boards of new energy vehicles, comprising an etching liquid tank, the etching liquid tank being cylindrical, with the axis of the etching liquid tank arranged horizontally, a support frame being installed at the bottom end of the circumference of the etching liquid tank, and an operation port being provided on one side of the upper end of the etching liquid tank;

[0008] A driving motor is installed at the center of the outer wall of one side of the etching liquid tank. The output end of the driving motor passes through the etching liquid tank and is vertically installed with a rotating rod. A sliding assembly is installed between the end of the rotating rod away from the output end of the driving motor and the etching liquid tank.

[0009] A linkage mechanism is installed on the sliding assembly, and the linkage mechanism includes a mounting seat, a fixture, a slow gear and a transmission assembly;

[0010] The mounting base is fixed on the sliding assembly, and one end of the mounting base away from the sliding assembly extends to the path where the axis of the etching liquid tank is located, and is rotatably connected to the clamp through the first rotating shaft. The slow gear is rotatably mounted on the sliding assembly through the second rotating shaft, and the transmission assembly is installed between the first rotating shaft and the second rotating shaft.

[0011] A slow tooth track is installed on the inner wall of the lower half of the etching liquid tank. The slow tooth track is in an arc shape and is coaxial with the etching liquid tank. The slow gear is meshed with the slow tooth track.

[0012] In the etching device for printed circuit boards of new energy vehicles, the circuit board is clamped and fixed at the operating port by the clamp through the coordinated arrangement of the drive motor, the mounting seat, the fixture, the slow gear, the slow tooth path and the transmission assembly, and the drive motor drives the mounting seat to perform circular motion, which facilitates the continuous etching and pick-up and placement operations of the circuit board. At the same time, after the circuit board moves into the etching liquid inside the etching liquid tank along with the mounting seat, the slow gear rotates under the meshing action of the slow gear and the slow tooth path. The rotating slow gear causes the fixture to rotate with the circuit board through the transmission assembly, thereby enhancing the fluidity of the etching liquid on the surface of the circuit board or in the etching tank, thereby ensuring sufficient etching.

[0013] As a further supplement to the present application, the sliding assembly includes a slider fixed to the rotating rod, and an annular slide rail fixed to the inner wall of the etching liquid tank, and the slider and the annular slide rail are slidably engaged;

[0014] The mounting seat and the second rotating shaft are both connected to the slider.

[0015] As a further supplement to the present application, the transmission assembly includes a transmission sprocket and a transmission chain. There are two transmission sprockets, and the two transmission sprockets are coaxially fixed to the rotating shaft one and the rotating shaft two respectively. The transmission chain is connected between the two transmission sprockets.

[0016] As another improvement of the present application, a fast tooth track is installed on the inner wall of the upper half of the etching liquid tank on the side away from the operation port. The fast tooth track is also in the shape of an arc and is arranged coaxially with the etching liquid tank. The diameter of the fast tooth track is larger than the diameter of the slow tooth track, and the tooth block density on the fast tooth track is greater than the tooth block density on the slow tooth track.

[0017] The linkage mechanism also includes a fast gear, which is coaxially fixed on the second rotating shaft and meshes with the fast tooth track. Through the cooperation of the fast gear and the fast tooth track, after the etching of the circuit board is completed and the circuit board moves above the etching liquid level along with the mounting seat, the slow gear disengages from the slow tooth track, and the fast gear meshes with the fast tooth track at this time. As the mounting seat continues to move, the fast gear rotates on its own, thereby rapidly rotating the fixture and the circuit board through the transmission assembly. The etching liquid attached to the circuit board separates from the circuit board under the action of centrifugal force and flows down along the inner wall of the etching liquid tank for recovery. Compared with negative pressure suction, the design in this scheme is simpler, energy-saving and reliable.

[0018] As another improvement of the present application, a straightening baffle is installed on the inner wall of the upper half of the etching liquid tank, the straightening baffle is located between the slow tooth path and the operating port, and the straightening baffle is located in the etching liquid tank near the rotating shaft 1; after the clamp moves with the circuit board along the mounting seat until the fast gear disengages from the fast tooth path, the straightening baffle can straighten the circuit board, making it convenient to take and place the circuit board at a fixed angle later.

[0019] As another improvement supplement to the present application, a splash shield is also installed on the inner wall of the upper half of the etching liquid tank, and the splash shield is located between the straightening baffle and the operating port, and the splash shield and the straightening baffle are symmetrically arranged about the rotating axis; the straightening baffle and the splash shield can play a certain shielding role at the operating port, effectively preventing the etching liquid thrown out during the rapid rotation of the circuit board from splashing out from the operating port.

[0020] As another improvement and supplement to the present application, the bottom of the end faces of the righting baffle and the splash guard away from the operating port are both provided with arc-shaped guide grooves, and the grooves on both sides of the arc-shaped guide grooves are arranged downward; during the rapid rotation of the circuit board, the etching liquid splashed on the righting baffle and the splash guard flows along the arc-shaped guide grooves toward the inner walls on both sides of the etching liquid tank, preventing the etching liquid from flowing vertically downward and falling back onto the circuit board.

[0021] As a further supplement to this application, the operating port is covered with a dustproof cover, which is an arc-shaped plate and is slidably installed on the circumferential outer wall of the etching liquid tank; after use, the dustproof cover can be used to cover the operating port to prevent external dust and other debris from falling into the etching liquid tank. In addition, the dustproof cover can also be used to cover the operating port during the etching process to further prevent the etching liquid thrown out during the rapid rotation of the circuit board from splashing out of the operating port.

[0022] In summary, by coordinating the driving motor, mounting base, fixture, slow gear, slow tooth path and transmission assembly, the circuit board is clamped and fixed at the operating port by the fixture, and the driving motor drives the mounting base to make circular motion, which facilitates the continuous etching and pick-up and placement operations of the circuit board. At the same time, after the circuit board moves into the etching liquid inside the etching liquid tank along with the mounting base, the slow gear rotates under the meshing action of the slow gear and the slow tooth path. The rotating slow gear causes the fixture to rotate with the circuit board through the transmission assembly, thereby enhancing the fluidity of the etching liquid on the surface of the circuit board or in the etching tank. Thus, sufficient etching effect is ensured; and through the cooperation of the fast gear and the fast tooth track, after the etching of the circuit board is completed and the circuit board moves above the etching liquid level with the mounting base, the slow gear disengages from the slow tooth track, and the fast gear is now meshed with the fast tooth track. As the mounting base continues to move, the fast gear rotates, thereby rapidly rotating the circuit board held by the clamp through the transmission assembly. The etching liquid attached to the circuit board is separated from the circuit board under the action of centrifugal force and flows down along the inner wall of the etching liquid tank for recovery. Compared with negative pressure suction, the design of this solution is simpler, more energy-efficient, and more reliable.

[0023] In addition, after the fixture moves with the circuit board along with the mounting seat until the fast gear disengages from the fast tooth path, the straightening baffle can straighten the circuit board, making it convenient to pick up and place the circuit board at a fixed angle later; and the straightening baffle and the splash-proof baffle can play a certain shielding role at the operation port, effectively preventing the etching liquid thrown out during the rapid rotation of the circuit board from splashing out from the operation port, and the etching liquid splashed on the straightening baffle and the splash-proof baffle during the rapid rotation of the circuit board flows along the arc-shaped guide groove toward the inner walls on both sides of the etching liquid tank, preventing the etching liquid from flowing vertically downward and falling back onto the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure from one side perspective of a specific embodiment of the present application;

[0025] Figure 2 A schematic diagram of the internal structure of a specific embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of the overall three-dimensional structure of a specific embodiment of the present application from another side perspective;

[0027] Figure 4 A schematic cross-sectional view of a specific embodiment of the present application;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the drive motor, rotating rod, slider and linkage mechanism of a specific embodiment of the present application;

[0029] Figure 6 A schematic diagram of the three-dimensional structure of the linkage mechanism of a specific embodiment of the present application;

[0030] Figure 7 A schematic diagram of the three-dimensional structure of a centralizing baffle according to a specific embodiment of the present application;

[0031] Figure 8 This is a schematic diagram of the planar structure of a circuit board during etching according to a specific embodiment of the present application;

[0032] Figure 9 for Figure 8 Schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 10 This is a schematic diagram of the planar structure of the process of automatically removing etching liquid from a circuit board in a specific embodiment of the present application;

[0034] Figure 11 for Figure 10 Schematic diagram of the enlarged structure at B in the middle;

[0035] Figure 12 This is a schematic top view of the structure of the righting baffle and the splash baffle of a specific embodiment of the present application.

[0036] Description of the numbers in the figure:

[0037] 1. Etching liquid tank; 101. Operation port; 2. Support frame; 3. Drive motor; 4. Rotating rod; 5. Slider; 6. Annular slide rail; 7. Linkage mechanism; 71. Mounting seat; 72. Clamp; 73. Drive sprocket; 74. Drive chain; 75. Slow gear; 76. Fast gear; 8. Circuit board; 9. Slow gear track; 10. Fast gear track; 11. Straightening baffle; 1101. Arc guide groove; 12. Splash baffle; 13. Dust cover. DETAILED DESCRIPTION

[0038] The following describes three implementation methods of the present application in detail with reference to the accompanying drawings.

[0039] The first implementation method:

[0040] The present invention provides an etching device for a new energy vehicle printed circuit board. Figure 1-6 , including an etching liquid tank 1, the etching liquid tank 1 is cylindrical, and the axis of the etching liquid tank 1 is arranged horizontally, a support frame 2 is installed at the bottom end of the circumference of the etching liquid tank 1, an operation port 101 is provided on one side of the upper end of the etching liquid tank 1, a driving motor 3 is installed at the center of the outer wall of one side of the etching liquid tank 1, the output end of the driving motor 3 passes through the etching liquid tank 1 and is vertically installed with a rotating rod 4, a sliding component is installed between the end of the rotating rod 4 away from the output end of the driving motor 3 and the etching liquid tank 1, and a linkage mechanism 7 is installed on the sliding component, and the linkage mechanism 7 includes an installation The mounting seat 71, the clamp 72, the slow gear 75 and the transmission assembly, the mounting seat 71 is fixed on the sliding assembly, the mounting seat 71 extends to the path of the axis of the etching liquid tank 1 at one end away from the sliding assembly, and is rotatably connected to the clamp 72 through the rotating shaft 1, the slow gear 75 is rotatably mounted on the sliding assembly through the rotating shaft 2, and the transmission assembly is installed between the rotating shaft 1 and the rotating shaft 2. A slow gear track 9 is installed on the inner wall of the lower half of the etching liquid tank 1. The slow gear track 9 is an arc-shaped arc arranged coaxially with the etching liquid tank 1, and the slow gear 75 is engaged with the slow gear track 9.

[0041] Among them, the sliding assembly includes a slider 5 fixed to the rotating rod 4, and an annular slide rail 6 fixed to the inner wall of the etching liquid tank 1. The slider 5 slides with the annular slide rail 6, and the mounting seat 71 and the second rotating shaft are both connected to the slider 5. The transmission assembly includes a transmission sprocket 73 and a transmission chain 74. There are two transmission sprockets 73, and the two transmission sprockets 73 are coaxially fixed to the first rotating shaft and the second rotating shaft respectively. The transmission chain 74 is connected between the two transmission sprockets 73.

[0042] The etching device for the printed circuit board of the new energy vehicle is equipped with a driving motor 3, a mounting seat 71, a clamp 72, a slow gear 75, a slow tooth path 9, a transmission sprocket 73 and a transmission chain 74. The circuit board 8 is clamped and fixed at the operation port 101 by the clamp 72, and the mounting seat 71 is driven by the driving motor 3 to make a circular motion, which facilitates the continuous etching and pick-up and placement operations of the circuit board 8. At the same time, after the circuit board 8 moves into the etching liquid inside the etching liquid tank 1 along with the mounting seat 71, the slow gear 75 rotates under the meshing action of the slow gear 75 and the slow tooth path 9. The rotating slow gear 75 causes the clamp 72 to rotate with the circuit board 8 through the transmission action of the transmission sprocket 73 and the transmission chain 74. Figure 8 and Figure 9 As shown, the fluidity of the etching liquid on the surface of the circuit board 8 or in the etching tank is enhanced, thereby ensuring sufficient etching effect.

[0043] Second implementation method:

[0044] This embodiment is based on the embodiment 1, and the following structure is added to enable the present application to automatically remove the etching liquid on the circuit board 8. The specific configuration is as follows: Figure 2 、 Figure 4 、 Figure 5 and Figure 6 As shown, a fast gear track 10 is installed on the inner wall of the upper half of the etching liquid tank 1 away from the operation port 101. The fast gear track 10 is also in the shape of an arc and is arranged coaxially with the etching liquid tank 1. The diameter of the fast gear track 10 is larger than the diameter of the slow gear track 9. The tooth block density on the fast gear track 10 is greater than the tooth block density on the slow gear track 9. The linkage mechanism 7 also includes a fast gear 76, which is coaxially fixed to the rotating shaft 2 and meshes with the fast gear track 10.

[0045] In this solution, through the cooperation of the fast gear 76 and the fast tooth track 10, after the etching of the circuit board 8 is completed and the circuit board 8 moves above the etching liquid level along with the mounting base 71, the slow gear 75 disengages from the slow tooth track 9, and the fast gear 76 is now engaged with the fast tooth track 10. As the mounting base 71 continues to move, the fast gear 76 rotates, thereby rapidly rotating the circuit board 8 with the fixture 72 through the transmission assembly. Figure 10 and Figure 11 As shown, the etching liquid attached to the circuit board 8 is separated from the circuit board 8 under the action of centrifugal force, and flows downward along the inner wall of the etching liquid tank 1 for recovery. Compared with negative pressure suction, the design in this solution is simpler, energy-saving and reliable.

[0046] Among them, Figure 8 As shown, under the meshing action of the slow gear 75 and the slow tooth path 9, the slow gear 75 rotates at a speed of n1. Figure 10It is shown that under the meshing action of the fast gear 76 and the fast gear track 10, the fast gear 76 rotates at a speed of n2, where n2>n1.

[0047] The third implementation method:

[0048] This embodiment is based on the embodiment 1 and the embodiment 2, and the following structure is added to facilitate the application of taking and placing the circuit board 8 at a fixed angle. The specific configuration is as follows: Figure 2 and Figure 4 As shown, a straightening baffle 11 is installed on the inner wall of the upper half of the etching liquid tank 1. The straightening baffle 11 is located between the slow gear path 9 and the operation port 101, and the straightening baffle 11 is located at a position of the etching liquid tank 1 close to the rotating shaft 1.

[0049] The clamp 72 carries the circuit board 8 and moves along the mounting base 71 until the fast gear 76 is separated from the fast gear path 10. The straightening baffle 11 can straighten the circuit board 8. Figure 12 As shown, it is convenient to take and place the circuit board 8 at a fixed angle later.

[0050] like Figure 2 and Figure 4 As shown, a splash shield 12 is installed on the inner wall of the upper half of the etching liquid tank 1. The splash shield 12 is located between the centralizing shield 11 and the operation port 101. The splash shield 12 and the centralizing shield 11 are symmetrically arranged about the rotation axis.

[0051] The righting baffle 11 and the anti-splash baffle 12 can provide a certain shielding effect on the operation port 101 , effectively preventing the etching liquid thrown out during the rapid rotation of the circuit board 8 from splashing out of the operation port 101 .

[0052] like Figure 7 As shown, the bottom of the end surfaces of the straightening baffle 11 and the anti-splash baffle 12 away from the operation port 101 are both provided with an arc-shaped guide groove 1101, and the notches on both sides of the arc-shaped guide groove 1101 are set downward. During the rapid rotation of the circuit board 8, the etching liquid splashed on the straightening baffle 11 and the anti-splash baffle 12 flows along the arc-shaped guide groove 1101 toward the inner walls on both sides of the etching liquid tank 1, preventing the etching liquid from flowing vertically downward and falling back onto the circuit board 8.

[0053] In addition, the operation port 101 is covered with a dustproof cover 13, which is an arc-shaped plate and is slidably mounted on the circumferential outer wall of the etching liquid tank 1. After use, the dustproof cover 13 can be used to cover the operation port 101 to prevent external dust and other debris from falling into the etching liquid tank 1. In addition, the dustproof cover 13 can also be used to cover the operation port 101 during the etching process to further prevent the etching liquid thrown out during the rapid rotation of the circuit board 8 from splashing out of the operation port 101.

[0054] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. An etching device for a new energy vehicle printed circuit board, comprising an etching liquid tank (1), characterized in that: The etching liquid tank (1) is cylindrical, and the axis of the etching liquid tank (1) is arranged horizontally. A support frame (2) is installed at the bottom end of the circumference of the etching liquid tank (1), and an operation port (101) is provided on one side of the upper end of the etching liquid tank (1); A driving motor (3) is installed at the center of the outer wall of one side of the etching liquid tank (1); the output end of the driving motor (3) passes through the etching liquid tank (1) and is vertically mounted with a rotating rod (4); a sliding component is installed between the end of the rotating rod (4) away from the output end of the driving motor (3) and the etching liquid tank (1); A linkage mechanism (7) is installed on the sliding assembly, and the linkage mechanism (7) includes a mounting seat (71), a clamp (72), a slow gear (75) and a transmission assembly; The mounting seat (71) is fixed on the sliding assembly, and one end of the mounting seat (71) away from the sliding assembly extends to the path where the axis of the etching liquid tank (1) is located, and is rotatably connected to the clamp (72) via a rotating shaft 1, and the slow gear (75) is rotatably mounted on the sliding assembly via a rotating shaft 2, and the transmission assembly is mounted between the rotating shaft 1 and the rotating shaft 2; A slow tooth track (9) is installed on the inner wall of the lower half of the etching liquid tank (1), and the slow tooth track (9) is in the shape of an arc and is arranged coaxially with the etching liquid tank (1). The slow gear (75) is meshed with the slow tooth track (9); A fast tooth track (10) is installed on the inner wall of the upper half of the etching liquid tank (1) away from the operating port (101), and the fast tooth track (10) is also in the shape of an arc arranged coaxially with the etching liquid tank (1), and the diameter of the fast tooth track (10) is greater than the diameter of the slow tooth track (9), and the tooth block density on the fast tooth track (10) is greater than the tooth block density on the slow tooth track (9); The linkage mechanism (7) further includes a fast gear (76), the fast gear (76) being coaxially fixed on the second rotating shaft, and the fast gear (76) being meshed with the fast tooth track (10).

2. The etching device for a new energy vehicle printed circuit board according to claim 1, characterized in that: The sliding assembly comprises a slider (5) fixed to the rotating rod (4), and an annular slide rail (6) fixed to the inner wall of the etching liquid tank (1), and the slider (5) and the annular slide rail (6) are in sliding engagement; The mounting seat (71) and the second rotating shaft are both connected to the slider (5).

3. The etching device for a new energy vehicle printed circuit board according to claim 2, characterized in that: The transmission assembly comprises a transmission sprocket (73) and a transmission chain (74), two transmission sprockets (73) are provided, and the two transmission sprockets (73) are coaxially fixed to the first rotating shaft and the second rotating shaft respectively, and the transmission chain (74) is transmission-connected between the two transmission sprockets (73).

4. The etching device for a new energy vehicle printed circuit board according to claim 3, characterized in that: A straightening baffle (11) is installed on the inner wall of the upper half of the etching liquid tank (1), and the straightening baffle (11) is located between the slow tooth path (9) and the operation port (101), and the straightening baffle (11) is located at a position of the etching liquid tank (1) close to the rotating shaft 1.

5. The etching device for a new energy vehicle printed circuit board according to claim 4, characterized in that: A splash shield (12) is also installed on the inner wall of the upper half of the etching liquid box (1), and the splash shield (12) is located between the straightening shield (11) and the operation port (101). The splash shield (12) and the straightening shield (11) are symmetrically arranged about the rotation axis.

6. The etching device for a new energy vehicle printed circuit board according to claim 5, characterized in that: The bottoms of the end surfaces of the straightening baffle (11) and the anti-splash baffle (12) away from the operating port (101) are both provided with arc-shaped guide grooves (1101), and the notches on both sides of the arc-shaped guide grooves (1101) are arranged downward.

7. The etching device for a new energy vehicle printed circuit board according to claim 1, characterized in that: The operating port (101) is covered with a dustproof cover plate (13), which is an arc-shaped plate and is slidably mounted on the circumferential outer wall of the etching liquid tank (1).

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