Etching device for printed circuit board of new energy automobile

Abstract

The invention relates to an etching device for a printed circuit board of a new energy automobile, which is applied to the field of circuit board etching and comprises a cylindrical etching liquid box, a driving motor is mounted on the etching liquid box, a rotating rod is mounted at the output end of the driving motor, and a sliding assembly is mounted between the rotating rod and the etching liquid box. A linkage mechanism comprising a mounting seat, a clamp, a slow gear and a transmission assembly is mounted on the sliding assembly, a slow gear path meshed with the slow gear is mounted on the inner wall of the lower half part of the etching liquid box, and the mounting seat is driven by a driving motor to do circular motion, so that continuous etching and taking and placing operation of a circuit board are facilitated; after the circuit board moves into the etching liquid on the inner side of the etching liquid box along with the mounting seat, the slow gear rotates under the meshing action of the slow gear and the slow tooth path, and the rotating slow gear enables the clamp to drive the circuit board to rotate through the transmission assembly, so that the fluidity of the etching liquid on the surface of the circuit board or in the etching groove is enhanced; therefore, a sufficient etching effect is ensured.

Description

Technical Field

[0001] The 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] In the etching process of the printed circuit board production line, an etching liquid is required to etch the printed circuit board. In the etching process, an etching section is set on the printed circuit board production line, and an etching liquid storage container is set on the etching section to store the etching liquid. In the etching process, the etching operation is generally performed by spraying the etching liquid on the circuit board in motion. In the etching operation of the etching liquid spraying, since the etching liquid will remain on the surface of the circuit board or in the etching tank, as the etching proceeds, the concentration of the residual etching liquid will gradually decrease, which results in the etching efficiency without the residual etching liquid being greater than the etching efficiency with the residual etching liquid, which in turn affects the etching quality of the circuit board, resulting in a decrease in the overall quality of the circuit board.

[0004] In order to improve the above problems, after searching, the patent publication number CN105208782B provides an automatic etching device for a circuit board, in which a plurality of suction holes are arranged on the etching conveying roller, and the suction holes are used to generate negative pressure and absorb the etching liquid on the circuit board, so that 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, and 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, the etching component is used to spray the etching liquid onto the circuit board on the conveying component, the conveying component includes a plurality of suction rollers parallel to each other, each suction roller is provided with a plurality of suction roller wheels, and the suction roller wheels are provided with suction holes, and the cleaning component is used to clean the suction holes on the side of the suction roller away from the circuit board. The device also includes a liquid suction component and a control component. The liquid suction component is connected to the liquid suction holes on each liquid suction roller through a liquid suction gas path. A negative pressure sensor for detecting the suction pressure is provided on the liquid suction gas path. This effectively avoids the blockage of the negative pressure liquid suction holes for absorbing 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 is found that in 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. Among them, a few adopt the liquid absorption structure disclosed above, but this structure is relatively complex and the etching energy consumption is large. Therefore, an etching device for a new energy vehicle printed circuit board is proposed to improve the above 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 solution on the surface of the circuit board or in the etching tank has poor fluidity. As the etching proceeds, the concentration of the etching solution decreases, resulting in incomplete etching.

[0007] In order to solve the above problems, the present invention provides an etching device for a printed circuit board of a new energy vehicle, comprising an etching liquid tank, the etching liquid tank is cylindrical, and the axis of the etching liquid tank is arranged horizontally, a support frame is installed at the bottom end of the circumference of the etching liquid tank, and an operation port is arranged on one side of the upper end of the etching liquid tank; 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 a rotating rod is vertically installed, and a sliding component is installed between the end of the rotating rod away from the output end of the driving motor and the etching liquid tank; 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; The mounting seat is fixed on the sliding assembly, one end of the mounting seat 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 rotating shaft 1, the slow gear 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 is installed on the inner wall of the lower half of the etching liquid box. The slow gear track is in an arc shape and is arranged coaxially with the etching liquid box. The slow gear is meshed with the slow gear track.

[0008] In the etching device for the printed circuit board of the new energy vehicle mentioned above, the circuit board is clamped and fixed at the operation port by the clamp through the coordinated arrangement of the driving motor, the mounting seat, the fixture, the slow gear, the slow tooth path and the transmission assembly, and the driving motor is used to drive the mounting seat 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 with the mounting seat, the slow gear rotates under the meshing action of the slow gear and the slow tooth path, and the rotating slow gear causes the fixture to rotate with the circuit board through the transmission assembly, so that the fluidity of the etching liquid on the surface of the circuit board or in the etching tank is enhanced, thereby ensuring sufficient etching action.

[0009] As a further supplement to the present application, the sliding assembly includes a sliding block fixed to the rotating rod, and an annular slide rail fixed to the inner wall of the etching liquid tank, and the sliding block and the annular slide rail are slidably matched; The mounting seat and the second rotating shaft are both connected with the sliding block.

[0010] 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.

[0011] 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 away from the operation port, the fast tooth track is also in the shape of an arc arranged coaxially with the etching liquid tank, and the diameter of the fast tooth track is greater 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; 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 with the mounting seat, the slow gear is disengaged from the slow tooth track, and the fast gear is meshed with the fast tooth track at this time. As the mounting seat continues to move, the fast gear rotates, thereby quickly rotating the circuit board with the fixture through the transmission component. The etching liquid attached to the circuit board is separated from the circuit board under the action of centrifugal force, and flows downward 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.

[0012] 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 near the rotating shaft 1 of the etching liquid tank; 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.

[0013] As another improvement supplement of the present application, a splash shield is also installed on the inner wall of the upper half of the etching liquid box, and the splash shield is located between the righting baffle and the operating port, and the splash shield and the righting baffle are symmetrically arranged about the rotating axis; the righting 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 of the operating port.

[0014] As another improvement supplement to the present application, the bottom of the end surfaces 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.

[0015] As a further supplement to the present application, the operating port is covered with a dust cover, which is an arc-shaped plate and is slidably installed on the circumferential outer wall of the etching liquid tank; after use, the dust 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 dust 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.

[0016] In summary, by coordinating the driving motor, the mounting seat, the fixture, the slow gear, the slow tooth path and the transmission assembly, the circuit board is clamped and fixed at the operation port by the fixture, and the mounting seat is driven by the driving motor to make a 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, so that the fluidity of the etching liquid on the surface of the circuit board or in the etching tank is enhanced. 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 with the mounting seat to above the etching liquid level, the slow gear can be separated from the slow tooth track, and the fast gear is meshed with the fast tooth track at this time. As the mounting seat continues to move, the fast gear rotates, so that the circuit board held by the clamp rotates rapidly through the transmission component, and 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 in this scheme is simpler, energy-saving and reliable; In addition, after the fixture moves with the circuit board along with the mounting seat until the fast gear is out of the fast tooth track, the straightening baffle can straighten the circuit board, making it convenient to take 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 on the operation port, effectively preventing the etching liquid thrown out during the rapid rotation of the circuit board from splashing out of 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

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure from one side perspective of a specific implementation method of the present application; Figure 2 It is a schematic diagram of the internal structure of a specific implementation method of the present application; Figure 3 It is a schematic diagram of the overall three-dimensional structure from another side perspective of a specific embodiment of the present application; Figure 4 It is a schematic diagram of the cutaway structure of a specific implementation method of the present application; Figure 5 It is a schematic diagram of the three-dimensional structure of the driving motor, rotating rod, slider and linkage mechanism of the specific implementation mode of the present application; Figure 6 It is a schematic diagram of the three-dimensional structure of the linkage mechanism of a specific implementation method of the present application; Figure 7 A schematic diagram of the three-dimensional structure of a centralizing baffle according to a specific embodiment of the present application; Figure 8 A schematic diagram of the planar structure of a circuit board during etching according to a specific embodiment of the present application; Fig. 9 for Figure 8 A schematic diagram of the enlarged structure at A in the middle; Fig.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; Fig.11 for Fig.10 A schematic diagram of the enlarged structure at B in the middle; Fig.12 It is a schematic diagram of the top view of the structure of the righting baffle and the splash baffle of the specific implementation mode of the present application.

[0018] Description of the numbers in the figure: 1. Etching liquid tank; 101. Operation port; 2. Support frame; 3. Driving motor; 4. Rotating rod; 5. Sliding block; 6. Annular slide rail; 7. Linkage mechanism; 71. Mounting seat; 72. Clamp; 73. Transmission sprocket; 74. Transmission chain; 75. Slow gear; 76. Fast gear; 8. Circuit board; 9. Slow tooth track; 10. Fast tooth track; 11. Straightening baffle; 1101. Arc guide groove; 12. Splash baffle; 13. Dust cover. DETAILED DESCRIPTION

[0019] The following is a detailed description of three implementation methods of the present application in conjunction with the accompanying drawings.

[0020] The first implementation method: The present invention provides an etching device for a new energy vehicle printed circuit board. Figure 1-6, including an etching liquid box 1, the etching liquid box 1 is cylindrical, and the axis of the etching liquid box 1 is arranged horizontally, a support frame 2 is installed at the bottom end of the circumference of the etching liquid box 1, an operation port 101 is arranged on one side of the upper end of the etching liquid box 1, a driving motor 3 is installed at the center of the outer wall of one side of the etching liquid box 1, the output end of the driving motor 3 passes through the etching liquid box 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 box 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, 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 with the clamp 72 through the rotating shaft 1, the slow gear 75 is rotatably mounted on the sliding assembly through the rotating shaft 2, 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 in the shape of a circular arc arranged coaxially with the etching liquid tank 1, and the slow gear 75 is meshed with the slow gear track 9.

[0021] 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 and the annular slide rail 6 are slidably matched, 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, 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.

[0022] The etching device for the printed circuit board of the new energy vehicle is configured by the cooperation of the driving motor 3, the mounting seat 71, the fixture 72, the slow gear 75, the slow tooth track 9, the transmission sprocket 73 and the transmission chain 74. The circuit board 8 is clamped and fixed at the operation port 101 by the fixture 72, and the mounting seat 71 is driven by the driving motor 3 to make a circular motion, which facilitates the continuous etching and the picking and placing operation 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 with the mounting seat 71, the slow gear 75 rotates under the meshing action of the slow gear 75 and the slow tooth track 9. The rotating slow gear 75 causes the fixture 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 Fig. 9 As shown, the fluidity of the etching solution on the surface of the circuit board 8 or in the etching tank is enhanced, thereby ensuring sufficient etching effect.

[0023] Second implementation method: Based on the first embodiment, the present embodiment adds the following structure, so that the present application can automatically remove the etching liquid on the circuit board 8, and 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 part of the etching liquid tank 1 away from the operation port 101. The fast gear track 10 is also an arc shape coaxially arranged with the etching liquid tank 1, and the diameter of the fast gear track 10 is greater 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 on the rotating shaft 2 and meshes with the fast gear track 10.

[0024] 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 seat 71, the slow gear 75 disengages from the slow tooth track 9, and the fast gear 76 is meshed with the fast tooth track 10 at this time. As the mounting seat 71 continues to move, the fast gear 76 rotates, thereby quickly rotating the circuit board 8 with the fixture 72 through the transmission assembly, as shown in FIG. Fig.10 and Fig.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.

[0025] Among them, Figure 8 As shown in FIG. 1 , under the meshing action of the slow gear 75 and the slow tooth track 9, the slow gear 75 rotates at a speed of n1. Fig.10 It is shown that under the meshing action between the fast gear 76 and the fast gear track 10, the fast gear 76 rotates at a speed of n2, where n2>n1.

[0026] The third implementation method: This embodiment adds the following structure on the basis of Embodiment 1 and Embodiment 2, so that the present application is convenient for taking and placing the circuit board 8 at a fixed angle, and 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, and 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.

[0027] The clamp 72 carries the circuit board 8 and moves along the mounting seat 71 until the fast gear 76 is separated from the fast gear path 10, and the straightening baffle 11 can straighten the circuit board 8. Fig.12 As shown, it is convenient to take and place the circuit board 8 at a fixed angle later.

[0028] like Figure 2 and Figure 4 As shown, a splash shield 12 is also installed on the inner wall of the upper half of the etching liquid box 1. 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.

[0029] The righting baffle 11 cooperates with the splash-proof baffle 12 to shield the operation port 101 to a certain extent, and effectively prevents the etching liquid thrown out during the rapid rotation of the circuit board 8 from splashing out of the operation port 101 .

[0030] 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 arranged 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.

[0031] In addition, the operation port 101 is covered with a dust cover 13, which is an arc-shaped plate and is slidably installed on the circumferential outer wall of the etching liquid tank 1; after use, the dust 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 dust 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 from the operation port 101.

[0032] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. 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 scope of protection of the present invention.

Claims

1. An etching device for a printed circuit board of a new energy vehicle, comprising an etching liquid tank (1), characterized in that: The etching liquid box (1) is cylindrical, and the axis of the etching liquid box (1) is arranged horizontally. A support frame (2) is installed at the bottom end of the circumference of the etching liquid box (1), and an operation port (101) is arranged on one side of the upper end of the etching liquid box (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); A linkage mechanism (7) is installed on the sliding assembly, and the linkage mechanism (7) comprises 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, 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 rotationally connected to the clamp (72) via a first rotating shaft, the slow gear (75) is rotationally mounted on the sliding assembly via a second rotating shaft, and the transmission assembly is mounted between the first rotating shaft and the second rotating shaft; A slow tooth track (9) is installed on the inner wall of the lower half of the etching liquid tank (1), the slow tooth track (9) is in the shape of an arc and is arranged coaxially with the etching liquid tank (1), and the slow gear (75) meshes with the slow tooth track (9).

2. The etching device for a new energy vehicle printed circuit board according to claim 1, characterized in that: The sliding assembly comprises a sliding block (5) fixed to the rotating rod (4), and an annular sliding rail (6) fixed to the inner wall of the etching liquid tank (1), and the sliding block (5) and the annular sliding rail (6) are slidably matched; The mounting seat (71) and the second rotating shaft are both connected to the sliding block (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 is characterized in that: A fast tooth 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 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 comprises a fast gear (76), wherein the fast gear (76) is coaxially fixed on the second rotating shaft, and the fast gear (76) is meshed with the fast tooth track (10).

5. The etching device for a new energy vehicle printed circuit board according to claim 4, characterized in that: 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 tooth path (9) and the operating port (101), and the straightening baffle (11) is located at a position of the etching liquid tank (1) close to the rotating shaft 1.

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

7. The etching device for a new energy vehicle printed circuit board according to claim 6, 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 groove (1101) are arranged downwards.

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

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