Preparation device and method of aluminum oxide film

Abstract

The invention relates to the technical field of aluminum oxide film preparation, in particular to a preparation device and method of an aluminum oxide film. According to the technical scheme, the preparation device for the aluminum oxide film comprises a workbench, a placement box, a hoisting assembly, a pre-cleaning assembly, an air drying assembly, an electrolytic tank and a storage box; the lifting assemblies can slide to proper positions to lift the storage box, the displacement continuity performance is improved, and the placement box is located between the two lifting assemblies and can be used for storing aluminum parts for displacement. The pre-cleaning assembly is used for pre-cleaning stains, the air drying assembly is used for air drying of water stains to facilitate subsequent electrolysis, the electrolytic tank is used for aluminum piece anode electrolysis to form an aluminum oxide film, and the storage box is used for storing the aluminum piece with the aluminum oxide film and is sequentially and linearly arranged in the middle of the workbench. The overall cleaning effect is improved, and the film layer quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum oxide film preparation, and in particular to a device and method for preparing an aluminum oxide film. Background Art

[0002] Aluminum oxide film is a dense aluminum oxide film formed naturally or obtained through artificial treatment on the surface of aluminum. This film has multiple functions, including preventing further oxidation and corrosion of aluminum, improving wear resistance, providing electrical insulation properties, and giving aluminum products a variety of colors through dyeing technology.

[0003] The existing aluminum oxide film is usually mixed and cleaned in a single box during the preparation process. The mixed treatment easily leads to incomplete cleaning of the aluminum parts used as the anode, which then causes white spots to appear on the film layer during preparation, affecting coloring and reducing the preparation effect.

[0004] Therefore, the above-mentioned existing aluminum oxide film is usually subjected to mixed cleaning treatment in a single box during the preparation process. The mixed treatment easily leads to incomplete cleaning of the aluminum parts serving as the anode, which then leads to white spots on the film layer during preparation, affecting the coloring and reducing the preparation effect. A preparation device and method for aluminum oxide film can be designed to solve the above-mentioned problems. Summary of the invention

[0005] In order to overcome the existing aluminum oxide film, during the preparation process, a mixed cleaning treatment is usually performed in a single box. The mixed treatment easily leads to incomplete cleaning of the aluminum parts used as the anode, and then during the preparation, white spots appear on the film layer, affecting the coloring and reducing the preparation effect.

[0006] The technical solution of the present invention is: a device for preparing aluminum oxide film, including a workbench, a placement box, a lifting component, a pre-cleaning component, an air-drying component, an electrolytic cell and a storage box; lifting components for lifting the storage box are symmetrically arranged on both sides of the workbench, and a placement box for storing aluminum parts for displacement is arranged between the two groups of lifting components; a pre-cleaning component for pre-cleaning stains, an air-drying component for air-drying water stains for subsequent electrolysis, an electrolytic cell for anodic electrolysis of aluminum parts to form aluminum oxide film, and a storage box for storing aluminum parts forming aluminum oxide film are linearly arranged in the middle of the workbench.

[0007] Preferably, a box is placed between the two groups of lifting components to store aluminum parts for displacement, a pre-cleaning component for pre-cleaning stains, an air-drying component for air-drying water stains for subsequent electrolysis, an electrolytic cell for anodic electrolysis of aluminum parts to form an aluminum oxide film, and a storage box for storing aluminum parts with aluminum oxide film formed are linearly arranged in the middle of the workbench in sequence, which can perform continuous and rapid preparation operations, increase the overall cleaning effect, and improve the quality of the film layer.

[0008] Preferably, the middle part of the workbench is linearly provided with a first storage hole, a second storage hole and a third storage hole for installing a pre-cleaning component, an air-drying component and an electrolytic cell, brackets are provided at the corners around the bottom of the workbench, installation holes are provided at the corners around the third storage hole on the workbench, and slide grooves are symmetrically provided on both sides of the workbench.

[0009] Preferably, a chassis is provided at the bottom of the placement box, support columns are provided in the middle of both sides of the placement box, a mounting sleeve is provided on the top of the support column, a through hole is provided in the center of the mounting sleeve, and water filtering holes are distributed on the surrounding surfaces of the placement box and the bottom of the chassis.

[0010] Preferably, the lifting assembly includes a connecting rod, a guide sleeve, a cylinder, a sliding sleeve, a first power supply, a guide wheel, an extension frame, a plug-in sleeve and a camera. The upper end of the connecting rod is provided with a guide sleeve, the top of the guide sleeve is provided with a cylinder, the outer end of the guide sleeve is provided with an extension frame, the cylinder drives the guide sleeve to drive the extension frame to rise and fall, the lower end of the connecting rod is provided with a sliding sleeve, the bottom of the sliding sleeve is linearly provided with a guide wheel, the outer end of the guide wheel is provided with a first power supply, a camera is provided on the extension frame, and the outer end of the first power supply is provided with a signal receiver.

[0011] Preferably, the pre-cleaning assembly includes a drive motor, a rotating column, an extension rod, a cleaning brush, an ultrasonic cleaner, a second power supply, a first electromagnetic control valve, a second electromagnetic control valve, a water inlet pipe, a drain pipe and a tank body. An ultrasonic cleaner is provided on the inner side of the tank body in an annular direction, a second power supply is provided on the outer end of the ultrasonic cleaner, and a signal receiver is provided on the outer end of the second power supply.

[0012] Preferably, a first electromagnetic control valve is provided on the upper outer part of the tank body, a water inlet pipe is provided at the center of the first electromagnetic control valve, a second electromagnetic control valve is provided on the lower outer part of the tank body, a drain pipe is provided at the center of the second electromagnetic control valve, a rotating column is provided at the bottom center of the tank body, an extension rod is provided in a circumferential direction at the outer end of the rotating column, a positioning hole is linearly opened on the extension rod, a cleaning brush is provided inside the positioning hole, and a driving motor drives the rotating column to drive the extension rod to rotate.

[0013] Preferably, the air-drying component includes ventilation holes, air blowing ports, a balancing frame, fixed columns, a ring box and a control end. Ventilation holes are opened along the top edge of the ring box, air blowing ports are opened along the bottom edge of the ring box, a balancing frame is provided at the lower end of the ring box, a control end is provided at the end of the ring box, an air pump and a controller are provided inside the control end, and fixed columns are symmetrically provided on the balancing frame.

[0014] Preferably, pillars are provided at the corners around the bottom of the electrolytic cell, a drain plug is provided at the center of the bottom of the electrolytic cell, a third electromagnetic control valve is provided at the outer end of the electrolytic cell, a liquid inlet pipe is provided at the center of the third electromagnetic control valve, a temperature sensor is provided on the side wall of the electrolytic cell, a thermometer is provided at the outer end of the temperature sensor, a heating rod and a discharge rod are respectively provided inside the electrolytic cell, and the outer sides of the heating rod and the discharge rod are electrically connected to a third power supply.

[0015] According to another aspect of the present invention, a device and method for preparing an aluminum oxide film are provided, comprising the following steps:

[0016] S1. Put the aluminum part into the placement box, open the first electromagnetic control valve and use the water inlet pipe to let the water enter the tank, install a suitable cleaning brush in the positioning hole, and the signal receiver receives the signal to control the second power supply to drive the ultrasonic cleaner to operate, and the driving motor drives the rotating column to drive the extension rod to rotate;

[0017] S2. The signal receiver receives the signal, the first power supply drives the guide wheel inside the sliding sleeve to reach the appropriate position along the sliding groove, the cylinder drives the guide sleeve to drive the extension frame to rise and fall to the appropriate position, the camera performs detection, the hoisting placement box enters the tank, the surface of the aluminum part is cleaned, grease, dust and other pollutants are removed to ensure the surface is clean, and it is lifted up after cleaning;

[0018] S3, the first power supply drives the guide wheel inside the sliding sleeve along the sliding groove to the air-drying component position, the controller drives the air pump to use the air outlet to clean the water stains on the surface of the cleaned aluminum part, and then the cylinder drives the guide sleeve to drive the extension frame to descend into the electrolytic cell;

[0019] S4, the third electromagnetic control valve is opened, the acid electrolyte enters the liquid inlet pipe, and the third power supply electrically controls the heating rod and the discharge rod. By applying current, an oxidation reaction occurs on the aluminum surface to form an aluminum oxide film, keeping the power supply output current constant. The general current density is 10A / dm 2 The reaction temperature is controlled at about 30°C, and the cylinder drives the guide sleeve to drive the extension frame to lift the aluminum parts into the storage box for storage.

[0020] Beneficial effects of the present invention:

[0021] 1. According to the previous aluminum oxide film, during the preparation process, a single box is usually used for mixed cleaning. The mixed treatment is easy to cause the aluminum parts used as the anode to be incompletely cleaned, and then during the preparation, white spots appear on the film layer, affecting the coloring and reducing the preparation effect. The difference is that the lifting component can be slid to a suitable position for lifting the storage box to increase the displacement continuity. The placement box is located between two groups of lifting components and can be used to store aluminum parts for displacement. The pre-cleaning component for pre-cleaning stains, the air-drying component for air-drying water stains for subsequent electrolysis, the electrolytic cell for anode electrolysis of aluminum parts to form aluminum oxide film, and the storage box for storing aluminum parts forming aluminum oxide film are linearly arranged in the middle of the workbench in sequence, which can perform continuous and rapid preparation operations, increase the overall cleaning effect, and improve the film quality.

[0022] 2. When cleaning is in progress, the signal receiver receives the signal, and the first power supply drives the guide wheel inside the sliding sleeve to reach the appropriate position along the sliding groove to increase the adjustment flexibility. The cylinder drives the guide sleeve to drive the extension frame to rise and fall to the appropriate position. The camera performs detection, and the hoisting placement box enters the tank body to clean the surface of the aluminum parts, remove grease, dust and other pollutants to ensure the surface is clean. After cleaning, it is lifted up to improve the overall cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the preparation device of the present invention;

[0024] Figure 2 It is a schematic diagram of a working table of the preparation device of the present invention;

[0025] Figure 3 It is a schematic diagram of placing a box for preparing the device of the present invention;

[0026] Figure 4 It is a schematic diagram of the hoisting assembly of the preparation device of the present invention;

[0027] Figure 5 This is a schematic diagram of the pre-cleaning components of the preparation device of the present invention;

[0028] Figure 6 This is a schematic diagram of the air-drying component of the preparation device of the present invention;

[0029] Figure 7 A schematic diagram of an electrolytic cell for preparing an apparatus according to the present invention;

[0030] Figure 8 This is a schematic diagram from another angle of the electrolytic cell of the preparation device of the present invention.

[0031] Description of reference numerals: 1. workbench; 2. placement box; 3. lifting assembly; 4. pre-cleaning assembly; 5. air drying assembly; 6. electrolytic cell; 7. storage box; 101. bracket; 102. first storage hole; 103. second storage hole; 104. third storage hole; 105. mounting hole; 106. slideway; 201. chassis; 202. water filter hole; 203. support column; 204. mounting sleeve; 205. positioning bolt; 301. connecting rod; 302. guide sleeve; 303. cylinder; 304. sliding sleeve; 305. first power supply; 306. guide wheel; 307. extension frame; 308. plug sleeve; 309. camera; 40 1. Drive motor; 402. Rotating column; 403. Extension rod; 404. Cleaning brush; 405. Ultrasonic cleaner; 406. Second power supply; 407. First electromagnetic control valve; 408. Second electromagnetic control valve; 409. Water inlet pipe; 410. Drain pipe; 411. Tank body; 501. Ventilation hole; 502. Air outlet; 503. Balancing frame; 504. Fixed column; 505. Ring box; 506. Control end; 601. Drain plug; 602. Liquid inlet pipe; 603. Third electromagnetic control valve; 604. Support column; 605. Third power supply; 606. Heating rod; 607. Discharge rod; 608. Thermometer. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] See also Figure 1-3 The present invention provides an embodiment: a device for preparing aluminum oxide film, comprising a workbench 1, a placement box 2, a hanging assembly 3, a pre-cleaning assembly 4, an air-drying assembly 5, an electrolytic cell 6 and a storage box 7; hanging assemblies 3 for hanging the storage box 7 are symmetrically arranged on both sides of the workbench 1, a placement box 2 for storing aluminum parts for displacement is arranged between the two groups of hanging assemblies 3, and a pre-cleaning assembly 4 for pre-cleaning stains, an air-drying assembly 5 for air-drying water stains for subsequent electrolysis, an electrolytic cell 6 for performing anodic electrolysis of aluminum parts to form aluminum oxide film, and a storage box 7 for storing aluminum parts forming aluminum oxide film are linearly arranged in the middle of the workbench 1 in sequence.

[0034] See also Figure 1-4In the present embodiment, a first storage hole 102, a second storage hole 103 and a third storage hole 104 for installing a pre-cleaning component 4, an air-drying component 5 and an electrolytic cell 6 are linearly opened in the middle of the workbench 1 in sequence, and brackets 101 are provided at the corners around the bottom of the workbench 1. Installation holes 105 are provided at the corners around the third storage hole 104 on the workbench 1. Slide grooves 106 are symmetrically opened on both sides of the workbench 1. The slide grooves 106 can be used to increase the adjustment flexibility. A chassis 201 is provided at the bottom of the placement box 2, and support columns 203 are provided in the middle of both sides of the placement box 2. A mounting sleeve 204 is provided on the top of the support column 203, and a through hole is opened in the center of the mounting sleeve 204. Water filter holes 202 are distributed on the surrounding surfaces of the placement box 2 and the bottom of the chassis 201, and water can flow through the water filter holes 202.

[0035] See also Figure 3-5 In this embodiment, the hoisting assembly 3 includes a connecting rod 301, a guide sleeve 302, a cylinder 303, a sliding sleeve 304, a first power supply 305, a guide wheel 306, an extension frame 307, a plug sleeve 308 and a camera 309. The upper end of the connecting rod 301 is sleeved with a guide sleeve 302, the top of the guide sleeve 302 is provided with a cylinder 303, the outer end of the guide sleeve 302 is provided with an extension frame 307, the cylinder 303 drives the guide sleeve 302 to drive the extension frame 307 to rise and fall, the lower end of the connecting rod 301 is provided with a sliding sleeve 304, the bottom of the sliding sleeve 304 is linearly provided with a guide wheel 306, the outer end of the guide wheel 306 is provided with a first power supply 305, and the extension frame 307 is provided with a camera 309. A signal receiver is provided at the outer end of the first power supply 305, and the monitoring effect can be increased through the camera 309. The pre-cleaning component 4 includes a driving motor 401, a rotating column 402, an extension rod 403, a cleaning brush 404, an ultrasonic cleaner 405, a second power supply 406, a first electromagnetic control valve 407, a second electromagnetic control valve 408, a water inlet pipe 409, a drain pipe 410 and a tank body 411. An ultrasonic cleaner 405 is provided in a circumferential direction on the inner side of the tank body 411, and a second power supply 406 is provided at the outer end of the ultrasonic cleaner 405. A signal receiver is provided at the outer end of the second power supply 406. The ultrasonic cleaner 405 is controlled by the second power supply 406 to increase the cleaning effect.

[0036] See also Figure 4-6In this embodiment, a first electromagnetic control valve 407 is provided at the upper outer part of the tank body 411, a water inlet pipe 409 is provided at the center of the first electromagnetic control valve 407, a second electromagnetic control valve 408 is provided at the lower outer part of the tank body 411, a drain pipe 410 is provided at the center of the second electromagnetic control valve 408, a rotating column 402 is provided at the bottom center of the tank body 411, an extension rod 403 is provided in a circumferential direction at the outer end of the rotating column 402, a positioning hole is linearly opened on the extension rod 403, a cleaning brush 404 is provided inside the positioning hole, and a driving motor 401 drives the rotating column 402 to drive the extension rod 403 to rotate. The cleaning effect can be enhanced by using the cleaning brush 404. The air-drying component 5 includes a ventilation hole 501, an air outlet 502, a balance frame 503, a fixed column 504, a ring box 505 and a control terminal 506. The top edge of the ring box 505 is provided with a ventilation hole 501, the bottom edge of the ring box 505 is provided with an air outlet 502, the lower end of the ring box 505 is provided with a balance frame 503, the end of the ring box 505 is provided with a control terminal 506, an air pump and a controller are provided inside the control terminal 506, and the fixed column 504 is symmetrically provided on the balance frame 503. The air pump is driven by the controller to perform air drying.

[0037] See also Figure 1-8 In this embodiment, pillars 604 are provided at the corners around the bottom of the electrolytic cell 6, a drain plug 601 is provided at the center of the bottom of the electrolytic cell 6, a third electromagnetic control valve 603 is provided at the outer end of the electrolytic cell 6, a liquid inlet pipe 602 is provided at the center of the third electromagnetic control valve 603, a temperature sensor is provided on the side wall of the electrolytic cell 6, a thermometer 608 is provided at the outer end of the temperature sensor, a heating rod 606 and a discharge rod 607 are provided inside the electrolytic cell 6, and the outer sides of the heating rod 606 and the discharge rod 607 are electrically connected to a third power supply 605 to control the concentration, temperature, current density and electrolysis time of the electrolyte to obtain an ideal oxide film thickness and performance. The general current density is 10A / dm 2 , the reaction temperature is controlled at about 30°C, the frequency, duty cycle and reaction time can be adjusted according to specific needs, the common frequency is 200-1000Hz, the duty cycle is 10%-30%, and the reaction time is 4-10 minutes.

[0038] According to another aspect of the present invention, a device and method for preparing an aluminum oxide film are provided, comprising the following steps:

[0039] S1, put the aluminum part into the placement box 2, open the first electromagnetic control valve 407 and use the water inlet pipe 409 to let the water enter the tank 411, install a suitable cleaning brush 404 in the positioning hole, and the signal receiver receives the signal to control the second power supply 406 to drive the ultrasonic cleaner 405 to operate, and the driving motor 401 drives the rotating column 402 to drive the extension rod 403 to rotate;

[0040] S2, the signal receiver receives the signal, the first power supply 305 drives the guide wheel 306 inside the sliding sleeve 304 to reach the appropriate position along the sliding groove 106, the cylinder 303 drives the guide sleeve 302 to drive the extension frame 307 to rise and fall to the appropriate position, the camera 309 performs detection, the hoisting placement box 2 enters the tank 411, cleans the surface of the aluminum part, removes pollutants such as grease and dust, ensures that the surface is clean, and lifts it up after cleaning;

[0041] S3, the first power supply 305 drives the guide wheel 306 inside the sliding sleeve 304 to reach the position of the air-drying component 5 along the sliding groove 106, and the controller drives the air pump to use the air port 502 to clean the water stains on the surface of the cleaned aluminum part, and then the cylinder 303 drives the guide sleeve 302 to drive the extension frame 307 to descend into the electrolytic cell 6;

[0042] S4, the third electromagnetic control valve 603 is opened, the acid electrolyte enters the liquid inlet pipe 602, and the third power supply 605 electrically controls the heating rod 606 and the discharge rod 607. By applying current, an oxidation reaction occurs on the aluminum surface to form an aluminum oxide film, and the power supply output current is kept constant. Generally, the current density is 10A / dm 2 The reaction temperature is controlled at about 30° C. The cylinder 303 drives the guide sleeve 302 to drive the extension frame 307 to lift the aluminum part into the storage box 7 for storage.

[0043] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A device for preparing an aluminum oxide film, comprising a workbench (1); characterized in that: The invention also comprises a placement box (2), a hoisting assembly (3), a pre-cleaning assembly (4), an air-drying assembly (5), an electrolytic cell (6) and a storage box (7); hoisting assemblies (3) for hoisting the storage box (7) are symmetrically arranged on both sides of the workbench (1); a placement box (2) for storing aluminum parts for displacement is arranged between the two sets of hoisting assemblies (3); a pre-cleaning assembly (4) for pre-cleaning stains, an air-drying assembly (5) for air-drying water stains for subsequent electrolysis, an electrolytic cell (6) for performing anodic electrolysis of aluminum parts to form an aluminum oxide film, and a storage box (7) for storing aluminum parts with an aluminum oxide film formed thereon are arranged linearly in the middle of the workbench (1).

2. The device for preparing an aluminum oxide film according to claim 1, characterized in that: A first storage hole (102), a second storage hole (103) and a third storage hole (104) for installing a pre-cleaning component (4), an air drying component (5) and an electrolytic cell (6) are linearly provided in sequence in the middle of the workbench (1); brackets (101) are provided at the corners around the bottom of the workbench (1); installation holes (105) are provided at the corners around the third storage hole (104) on the workbench (1); and slide grooves (106) are symmetrically provided on both sides of the workbench (1).

3. The device for preparing an aluminum oxide film according to claim 1, characterized in that: A bottom plate (201) is provided at the bottom of the placement box (2), support columns (203) are provided in the middle of both sides of the placement box (2), a mounting sleeve (204) is provided at the top of the support column (203), a through hole is provided at the center of the mounting sleeve (204), and water filtering holes (202) are distributed on the surrounding surfaces of the placement box (2) and the bottom of the bottom plate (201).

4. The device for preparing an aluminum oxide film according to claim 1, characterized in that: The hoisting assembly (3) comprises a connecting rod (301), a guide sleeve (302), a cylinder (303), a sliding sleeve (304), a first power supply (305), a guide wheel (306), an extension frame (307), a plug sleeve (308) and a camera (309). The upper end of the connecting rod (301) is sleeved with a guide sleeve (302), the top of the guide sleeve (302) is provided with a cylinder (303), the outer end of the guide sleeve (302) is provided with an extension frame (307), the cylinder (303) drives the guide sleeve (302) to drive the extension frame (307) to rise and fall, the lower end of the connecting rod (301) is provided with a sliding sleeve (304), the bottom of the sliding sleeve (304) is linearly provided with a guide wheel (306), the outer end of the guide wheel (306) is provided with a first power supply (305), the extension frame (307) is provided with a camera (309), and the outer end of the first power supply (305) is provided with a signal receiver.

5. The device for preparing an aluminum oxide film according to claim 1, characterized in that: The pre-cleaning assembly (4) comprises a driving motor (401), a rotating column (402), an extension rod (403), a cleaning brush (404), an ultrasonic cleaner (405), a second power supply (406), a first electromagnetic control valve (407), a second electromagnetic control valve (408), a water inlet pipe (409), a drain pipe (410) and a tank body (411). An ultrasonic cleaner (405) is provided in a circumferential direction on the inner side of the tank body (411), a second power supply (406) is provided at the outer end of the ultrasonic cleaner (405), and a signal receiver is provided at the outer end of the second power supply (406).

6. The device for preparing an aluminum oxide film according to claim 5, characterized in that: A first electromagnetic control valve (407) is provided at the upper outer portion of the tank body (411), a water inlet pipe (409) is provided at the center of the first electromagnetic control valve (407), a second electromagnetic control valve (408) is provided at the lower outer portion of the tank body (411), a drainage pipe (410) is provided at the center of the second electromagnetic control valve (408), a rotating column (402) is provided at the bottom center of the tank body (411), an extension rod (403) is provided circumferentially at the outer end of the rotating column (402), a positioning hole is linearly opened on the extension rod (403), a cleaning brush (404) is provided inside the positioning hole, and a driving motor (401) drives the rotating column (402) to drive the extension rod (403) to rotate.

7. The device for preparing an aluminum oxide film according to claim 1, characterized in that: The air-drying component (5) includes a ventilation hole (501), an air outlet (502), a balancing frame (503), a fixing column (504), a ring box (505) and a control end (506). The top of the ring box (505) is provided with a ventilation hole (501), the bottom of the ring box (505) is provided with an air outlet (502), the lower end of the ring box (505) is provided with a balancing frame (503), the end of the ring box (505) is provided with a control end (506), an air pump and a controller are provided inside the control end (506), and the fixing columns (504) are symmetrically provided on the balancing frame (503).

8. The device for preparing an aluminum oxide film according to claim 1, characterized in that: Support pillars (604) are provided at the corners around the bottom of the electrolytic cell (6), a drain plug (601) is provided at the center of the bottom of the electrolytic cell (6), a third electromagnetic control valve (603) is provided at the outer end of the electrolytic cell (6), a liquid inlet pipe (602) is provided at the center of the third electromagnetic control valve (603), a temperature sensor is provided on the side wall of the electrolytic cell (6), a thermometer (608) is provided at the outer end of the temperature sensor, a heating rod (606) and a discharge rod (607) are respectively provided inside the electrolytic cell (6), and the outer sides of the heating rod (606) and the discharge rod (607) are electrically connected to a third power supply (605).

9. A device and method for preparing an aluminum oxide film, comprising the device for preparing an aluminum oxide film according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Place the aluminum part in the placement box (2), open the first electromagnetic control valve (407) to allow water to enter the tank (411) through the water inlet pipe (409), install a suitable cleaning brush (404) in the positioning hole, receive a signal from the signal receiver to control the second power supply (406) to drive the ultrasonic cleaner (405) to operate, and drive the motor (401) to drive the rotating column (402) to drive the extension rod (403) to rotate; S2, the signal receiver receives the signal, the first power supply (305) drives the guide wheel (306) inside the sliding sleeve (304) to reach a suitable position along the sliding groove (106), the cylinder (303) drives the guide sleeve (302) to drive the extension frame (307) to rise and fall to a suitable position, the camera (309) performs detection, the hoisting placement box (2) enters the tank body (411), cleans the surface of the aluminum part, removes pollutants such as grease and dust, ensures that the surface is clean, and lifts it up after cleaning; S3, the first power supply (305) drives the guide wheel (306) inside the sliding sleeve (304) along the sliding groove (106) to reach the position of the air-drying component (5), and the controller drives the air pump to use the air outlet (502) to clean the water stains on the surface of the cleaned aluminum part, and then the cylinder (303) drives the guide sleeve (302) to drive the extension frame (307) to descend into the electrolytic cell (6); S4, the third electromagnetic control valve (603) is opened, the acid electrolyte enters the liquid inlet pipe (602), and the third power supply (605) electrically controls the heating rod (606) and the discharge rod (607), and an oxidation reaction occurs on the aluminum surface by applying current to form an aluminum oxide film, and the power supply output current is kept constant, and the general current density is 10A / dm 2 The reaction temperature is controlled at about 30° C. The cylinder (303) drives the guide sleeve (302) to drive the extension frame (307) to lift the aluminum part into the storage box (7) for storage.

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