Multi-stage corrosion device for improving uniformity of corrosion holes of low-voltage anode aluminum foil

Abstract

The utility model discloses a multi-stage corrosion device for improving the uniformity of low-voltage anode aluminum foil corrosion holes, which comprises a bottom plate, four sliding rods fixedly connected to the upper surface of the bottom plate, a corrosion box slidably connected to the outer walls of the four sliding rods, two partition plates fixedly connected to the inner surface of the corrosion box, and a top plate fixedly connected to the upper ends of the sliding rods. A sliding groove is formed in the top plate, a sliding table is slidably connected to the inner surface of the sliding groove, a supporting rod is fixedly connected to the lower surface of the sliding table, a containing plate is fixedly connected to the lower end of the supporting rod, and the upper surface of the top plate communicates with a filtering box. And harmful substances in the waste gas can be absorbed, so that the waste gas is purified, after the waste gas is purified, the waste gas returns to the corrosion box through the return pipe to realize internal circulation purification, the pollution of the harmful gas to the environment in the corrosion process is effectively reduced, and the health of operators is protected.

Description

Technical Field

[0001] This utility model relates to the field of low-pressure anode aluminum foil corrosion hole technology, and in particular to a multi-stage corrosion device for improving the uniformity of low-pressure anode aluminum foil corrosion holes. Background Technology

[0002] Existing multi-stage corrosion equipment for creating corrosion pits in low-pressure anode aluminum foil is used to etch the aluminum foil during its production process to form a large number of tiny pores, thereby increasing the specific surface area of ​​the aluminum foil and optimizing the performance indicators of aluminum electrolytic capacitors, such as capacitance and equivalent series resistance.

[0003] However, in traditional applications, the aluminum foil is directly immersed in an etchant of a single or mixed concentration. This results in a lack of gradual corrosion formation on the foil surface. In the initial stages, the corrosion may be too intense, leading to inconsistent and disordered pit sizes and distributions. This fails to provide a good foundation for subsequent high-concentration corrosion, affecting the uniformity of pit distribution. Furthermore, the corrosion process generates waste gases containing harmful substances, which are directly released into the surrounding environment. This not only pollutes the atmosphere but also endangers the health of operators. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil. A partition divides the corrosion chamber into three spaces, each containing a different concentration of corrosive liquid. Through the cooperation of the slide table and the placement plate, and the corrosion chamber and the sliding rod, workpieces on the placement plate are sequentially placed into the corrosion chamber according to their concentration, enabling progressive pit formation. The low-concentration corrosive liquid initially forms relatively uniform micro-pits on the aluminum foil surface. Due to the relatively uniform initial pit distribution, subsequent corrosion in the high-concentration solution proceeds on this relatively uniform basis, resulting in a uniform pit distribution across the entire aluminum foil surface. Fan blades draw the waste gas generated during corrosion into a filter chamber, where activated carbon absorbs harmful substances, purifying the waste gas. After purification, the waste gas returns to the corrosion chamber through a return pipe, achieving internal circulation purification. This effectively reduces environmental pollution from harmful gases during corrosion and protects the health of operators.

[0005] This utility model also provides a multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil, comprising: a base plate, four sliding rods fixedly connected to the upper surface of the base plate, a corrosion chamber slidably connected to the outer walls of the four sliding rods, two partitions fixedly connected to the inner surface of the corrosion chamber, a top plate fixedly connected to the upper end of each sliding rod, a sliding groove provided on the top plate, a sliding platform slidably connected to the inner surface of the sliding groove, a support rod fixedly connected to the lower surface of the sliding platform, a placement plate fixedly connected to the lower end of the support rod, and a filter box communicating with the upper surface of the top plate. A support frame is movably connected to the inner surface of the filter box. Two filter plates are slidably connected to the inner surface of the support frame. Multiple activated carbon particles are placed between the two filter plates. An air duct is connected to the upper surface of the filter box. A valve is connected to the upper end of the air duct. An external pipe is connected to the upper end of the valve. A connector is fixedly connected to the outer wall of the external pipe. A bracket is fixedly connected to the inner wall of the air duct. A motor is fixedly connected to the inner surface of the bracket. A fan blade is fixedly connected to the output end of the motor. A return pipe is connected to the side surface of the air duct. The other end of the return pipe is connected to the upper surface of the top plate.

[0006] According to the present invention, a multi-stage corrosion device for improving the uniformity of corrosion holes in low-pressure anode aluminum foil is provided, wherein a side plate is fixedly connected to the rear surface of the corrosion chamber, and a threaded sleeve is connected through the inner surface of the side plate.

[0007] According to the present invention, a multi-stage corrosion device for improving the uniformity of corrosion holes in low-pressure anode aluminum foil is provided, wherein a screw is rotatably connected to the upper surface of the base plate, and the screw is threadedly connected to the inner surface of the threaded sleeve.

[0008] According to the present invention, a multi-stage corrosion device for improving the uniformity of corrosion holes in low-pressure anode aluminum foil is provided, wherein a second motor is fixedly connected to the lower surface of the base plate, and the screw is driven by the second motor.

[0009] According to the present invention, a multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil is provided, wherein a handle is fixedly connected to the side surface of the support frame, and a protective sleeve is fixedly connected to the outer surface of the handle.

[0010] According to the present invention, a multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil is provided, wherein a lead screw is rotatably connected to the inner surface of the top plate, and the lead screw is threadedly connected to the inner surface of the slide table.

[0011] According to the present invention, a multi-stage corrosion device for improving the uniformity of corrosion holes in low-pressure anode aluminum foil is provided, wherein a servo motor is fixedly connected to the side surface of the top plate, and the lead screw is driven by the servo motor.

[0012] According to the present invention, a multi-stage corrosion device for improving the uniformity of corrosion holes in low-pressure anode aluminum foil is provided, wherein a sealing strip is fixedly connected to the lower surface of the top plate, and the sealing strip is movably connected to the upper surface of the corrosion chamber.

[0013] Compared with existing technologies, this multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil uses a partition to divide the corrosion chamber into three spaces. Different concentrations of corrosive solutions are placed in these spaces. Through the cooperation of the slide table and the placement plate, and the corrosion chamber and the sliding rod, the workpieces on the placement plate are sequentially placed into the corrosion chamber according to their concentration, enabling progressive pit formation. The low-concentration corrosive solution initially forms some tiny pits relatively evenly on the aluminum foil surface. Because the initial pit distribution is relatively uniform, subsequent corrosion in the high-concentration solution proceeds on this relatively uniform foundation, resulting in a uniform pit distribution across the entire aluminum foil surface. Fan blades draw the waste gas generated during corrosion into a filter chamber, where activated carbon absorbs harmful substances, purifying the waste gas. After purification, the waste gas returns to the corrosion chamber through a return pipe, achieving internal circulation purification. This effectively reduces environmental pollution from harmful gases during corrosion and protects the health of operators. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a front view of the multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to this utility model;

[0016] Figure 2 This is a front cross-sectional view of the multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to this utility model.

[0017] Figure 3 This is a right-side cross-sectional view of the multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to this utility model.

[0018] Figure 4 This is a right-side structural view of the multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to this utility model.

[0019] Legend:

[0020] 1. Air duct; 2. Handle; 3. Sheath; 4. Threaded sleeve; 5. Motor II; 6. Return pipe; 7. Filter box; 8. Top plate; 9. Sealing strip; 10. Slide rod; 11. Partition plate; 12. Corrosion box; 13. Base plate; 14. Support frame; 15. Slide table; 16. Support rod; 17. Placement plate; 18. Fan blade; 19. Motor I; 20. Bracket; 21. Activated carbon granules; 22. Filter plate; 23. Slide groove; 24. Servo motor; 25. Lead screw; 26. Screw; 27. Side plate; 28. Valve; 29. ​​External pipe; 30. Connector. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4 This utility model provides a multi-stage corrosion device for improving the uniformity of corrosion holes in low-pressure anode aluminum foil. The device includes: a base plate 13; four sliding rods 10 are fixedly connected to the upper surface of the base plate 13; a corrosion chamber 12 is slidably connected to the outer wall of the four sliding rods 10; a side plate 27 is fixedly connected to the rear surface of the corrosion chamber 12; a threaded sleeve 4 is threaded through the inner surface of the side plate 27; a screw 26 is rotatably connected to the upper surface of the base plate 13; the screw 26 is threadedly connected to the inner surface of the threaded sleeve 4; and a second motor 5 is fixedly connected to the lower surface of the base plate 13, with the screw 26 driven by the second motor 5.

[0023] Specifically: When motor 25 starts, it drives screw 26 to rotate. Screw 26 is threadedly connected to threaded sleeve 4 on the inner surface of side plate 27. Side plate 27 is fixed to the rear surface of corrosion chamber 12. As screw 26 rotates, threaded sleeve 4 will move linearly on screw 26, thereby driving corrosion chamber 12 to slide up and down on four vertically fixed slide bars 10. By controlling the forward and reverse rotation of motor 25, the position of corrosion chamber 12 on slide bars 10 can be adjusted so that the placement plate 17 containing low-pressure anode aluminum foil can be immersed in corrosion solution of different concentrations for corrosion treatment.

[0024] Two partitions 11 are fixedly connected to the inner surface of the corrosion chamber 12. A top plate 8 is fixedly connected to the upper end of the slide rod 10. A sealing strip 9 is fixedly connected to the lower surface of the top plate 8. The sealing strip 9 is movably connected to the upper surface of the corrosion chamber 12.

[0025] Specifically: Two partitions 11 are used to divide the corrosion chamber 12 into three spaces, so that different concentrations of corrosive liquid can be added to the three spaces. A sealing strip 9 is fixedly connected to the lower surface of the top plate 8. When the corrosion chamber 12 moves to a position where it is in sealed contact with the top plate 8, the sealing strip 9 is movably connected to the upper surface of the corrosion chamber 12 to form a sealed space, which can prevent the corrosion waste gas from leaking out during the corrosion process.

[0026] A slide groove 23 is provided on the top plate 8. A slide table 15 is slidably connected to the inner surface of the slide groove 23. A lead screw 25 is rotatably connected to the inner surface of the top plate 8. The lead screw 25 is threaded through and connected to the inner surface of the slide table 15. A servo motor 24 is fixedly connected to the side surface of the top plate 8. Specifically, it is based on the control principle of PLC (Programmable Logic Controller). The PLC accurately controls the servo system to achieve precise adjustment of position, speed and torque. The control principle of PLC (Programmable Logic Controller) is a mature existing technology, so it will not be elaborated in this article. The lead screw 25 is driven by the servo motor 24. A support rod 16 is fixedly connected to the lower surface of the slide table 15. A placement plate 17 is fixedly connected to the lower end of the support rod 16.

[0027] Specifically: When the servo motor 24 starts, the lead screw 25 begins to rotate. The lead screw 25 passes through and is threadedly connected to the inner surface of the slide table 15. The slide table 15 is slidably connected to the groove 23 on the upper surface of the top plate 8. The rotation of the lead screw 25 will drive the slide table 15 to make linear motion in the groove 23, thereby realizing the precise movement of the placement plate 17 in the horizontal direction. By controlling the rotation angle and number of rotations of the servo motor 24, the movement distance of the slide table 15 and the placement plate 17 can be precisely controlled, so that the placement plate 17 can enter the corrosion tank 12 with different concentrations of corrosion solution in a preset order and position for treatment. The upper end of the support rod 16 is connected to the slide table 15, and the lower end is connected to the placement plate 17, which plays the role of supporting and fixing the placement plate 17, ensuring the stability of the placement plate 17 during the movement. The placement plate 17 is used to place low-pressure anode aluminum foil.

[0028] The upper surface of the top plate 8 is connected to a filter box 7. The inner surface of the filter box 7 is movably connected to a support frame 14. The side surface of the support frame 14 is fixedly connected to a handle 2. The outer surface of the handle 2 is fixedly connected to a protective sleeve 3. The inner surface of the support frame 14 is slidably connected to two filter plates 22. Multiple activated carbon particles 21 are placed between the two filter plates 22. The upper surface of the filter box 7 is connected to a duct 1. The upper end of the duct is connected to a valve. The upper end of the valve is connected to an external pipe. The outer wall of the external pipe is fixedly connected to a connector. The inner wall of the duct 1 is fixedly connected to a bracket 20. The inner surface of the bracket 20 is fixedly connected to a motor 19. The output end of the motor 19 is fixedly connected to a fan blade 18. The side surface of the duct 1 is connected to a return pipe 6. The other end of the return pipe 6 is connected to the upper surface of the top plate 8.

[0029] Specifically: When motor 19 starts, fan blade 18 begins to rotate, creating a negative pressure in duct 1. This draws the waste gas generated during the corrosion process into filter box 7 through duct 1. Support frame 14 is movably connected to the inner surface of filter box 7 and can be pulled out or pushed in using handle 2. Two filter plates 22 are slidably connected inside support frame 14, with multiple activated carbon particles 21 placed between the two filter plates 22. After the waste gas enters filter box 7, it passes through the activated carbon particle layer 21 between the two filter plates 22. Activated carbon has strong adsorption properties and can effectively absorb harmful substances in the waste gas, thereby purifying the waste gas. The waste gas purified by activated carbon particles 21 returns to corrosion box 12 through return pipe 6 to achieve internal circulation purification, which can reduce waste gas emissions and reduce environmental pollution. In addition, an external waste gas pipeline can be connected to connector 30, and valve 28 can be opened to transport the waste gas to external waste gas treatment equipment for further treatment.

[0030] Working principle: Before use, different concentrations of etching solution are placed in the three spaces separated by the partition 11 inside the etching chamber 12. Then, the low-pressure anode aluminum foil is placed on the placement plate 17. The motor 25 drives the screw 26 to rotate. As the screw 26 rotates, the threaded sleeve 4 will move linearly on the screw 26, thereby causing the etching chamber 12 to slide downward on the four vertically fixed slide rods 10. The placement plate 17 containing the low-pressure anode aluminum foil is immersed in the low-concentration etching solution for etching treatment. When the etching time is up, the etching chamber 12 descends, and the servo motor 24 drives the lead screw 25 to start rotating. The rotation of the lead screw 25 will cause the slide table 15 to move linearly in the slide groove 23, thereby achieving precise horizontal movement of the placement plate 17, so that the placement plate 17 reaches above the higher concentration etching solution in the etching chamber 12. Then, the etching chamber 12 rises to immerse the workpiece in the etching solution, realizing the gradual etching of holes.

[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil, characterized in that, include: A base plate (13) is provided, and four sliding rods (10) are fixedly connected to the upper surface of the base plate (13). A corrosion chamber (12) is slidably connected to the outer wall of the four sliding rods (10). Two partitions (11) are fixedly connected to the inner surface of the corrosion chamber (12). A top plate (8) is fixedly connected to the upper end of the sliding rods (10). A sliding groove (23) is provided on the top plate (8). A sliding table (15) is slidably connected to the inner surface of the sliding groove (23). A support rod (16) is fixedly connected to the lower surface of the slide (15), and a placement plate (17) is fixedly connected to the lower end of the support rod (16). A filter box (7) is connected to the upper surface of the top plate (8). A support frame (14) is movably connected to the inner surface of the filter box (7). Two filter plates (22) are slidably connected to the inner surface of the support frame (14). Multiple activated carbon particles (21) are placed between the two filter plates (22). The upper surface of the filter box (7) is connected to a duct (1), the upper end of the duct (1) is connected to a valve (28), the upper end of the valve (28) is connected to an external pipe (29), the outer wall of the external pipe (29) is fixedly connected to a connector (30), the inner wall of the duct (1) is fixedly connected to a bracket (20), the inner surface of the bracket (20) is fixedly connected to a motor (19), the output end of the motor (19) is fixedly connected to a fan blade (18), the side surface of the duct (1) is connected to a return pipe (6), and the other end of the return pipe (6) is connected to the upper surface of the top plate (8).

2. The multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to claim 1, characterized in that, A side plate (27) is fixedly connected to the rear surface of the corrosion chamber (12), and a threaded sleeve (4) is connected through the inner surface of the side plate (27).

3. The multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to claim 2, characterized in that, A screw (26) is rotatably connected to the upper surface of the base plate (13), and the screw (26) is threadedly connected to the inner surface of the threaded sleeve (4).

4. The multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to claim 3, characterized in that, The lower surface of the base plate (13) is fixedly connected to a motor (5), and the screw (26) is driven by the motor (5).

5. The multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to claim 1, characterized in that, A handle (2) is fixedly connected to the side surface of the support frame (14), and a protective sleeve (3) is fixedly connected to the outer surface of the handle (2).

6. The multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to claim 1, characterized in that, The inner surface of the top plate (8) is rotatably connected to a lead screw (25), which is threaded through the inner surface of the slide (15).

7. The multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to claim 6, characterized in that, A servo motor (24) is fixedly connected to the side surface of the top plate (8), and the lead screw (25) is driven by the servo motor (24).

8. The multi-stage corrosion device for improving the uniformity of corrosion pits in low-pressure anode aluminum foil according to claim 1, characterized in that, A sealing strip (9) is fixedly connected to the lower surface of the top plate (8), and the sealing strip (9) is movably connected to the upper surface of the corrosion box (12).

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