Aluminum alloy surface anodic oxidation uniform treatment device
By setting up auxiliary devices in the aluminum alloy anodizing treatment equipment, the concentration polarization problem caused by uneven electrolyte temperature was solved, achieving more uniform electrolyte stirring and electric field distribution, and improving the uniformity and stability of the oxide film.
Patent Information
- Application Number
- CN202520620724.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-02
AI Technical Summary
In the existing technology, water-cooled pipes are only installed on both sides of the bottom of the inner wall of the electrolytic cell, resulting in incomplete cooling of the electrolyte. This leads to temperature differences in the electrolyte, which may cause concentration polarization and bubble adhesion, resulting in oxide film defects.
A device for uniform anodizing of aluminum alloy surfaces was designed. By setting auxiliary devices in the tank, including a slide bar, shaft, stirring plate and arc-shaped negative electrode plate, uniform stirring of electrolyte and electric field distribution are achieved, reducing local current density and electric field intensity concentration and preventing bubble adhesion.
It achieves uniform electrolyte temperature distribution, reduces concentration polarization, improves the uniformity and stability of aluminum alloy surface oxidation treatment, and avoids oxide film defects.
Smart Images
Figure CN223951229U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to aluminum anodic oxidation technical field, concretely is a kind of aluminium alloy surface anodic oxidation uniform treatment device. BACKGROUND
[0002] Aluminium alloy anodic oxidation is a kind of surface treatment technology by electrochemical method to form an oxide film on the surface of aluminium alloy, and the anodic oxide film has high hardness and wear resistance, and the corrosion resistance of aluminium alloy can be effectively improved by attaching the anodic oxide film on the surface of aluminium alloy.
[0003] When aluminium alloy is anodized, the aluminium alloy is clamped by clamp and placed in electrolytic cell, the clamp is in contact with power anode, and the cathode material in electrolytic cell is connected with power negative pole, and water cooling is needed to cool electrolyte during anodic oxidation process, but since water cooling pipe is usually installed only at the inner wall bottom end of electrolytic cell, electrolyte in electrolytic cell is not cooled comprehensively, resulting in temperature difference of electrolyte at different positions, and color concentration difference polarization may occur, which causes bubble to adhere to the surface of workpiece and causes oxide film defect. UTILITY MODEL CONTENTS
[0004] (I) technical problem solved
[0005] In order to overcome the above-mentioned defects of prior art, the utility model provides an aluminium alloy surface anodic oxidation uniform treatment device, which solves the problem that since water cooling pipe is usually installed only at the inner wall bottom end of electrolytic cell, electrolyte in electrolytic cell is not cooled comprehensively, resulting in temperature difference of electrolyte at different positions, and color concentration difference polarization may occur, which causes bubble to adhere to the surface of workpiece and causes oxide film defect.
[0006] (II) technical scheme
[0007] In order to achieve the above object, the utility model provides the following technical scheme: an aluminium alloy surface anodic oxidation uniform treatment device, including pool body and power, the top of pool body is provided with positive pole rod and negative pole rod, the inner wall both sides of pool body are provided with a plurality of negative pole plate, and the negative pole plate is installed on the side of negative pole rod through bolt, the power is located at one side of pool body, and the positive pole and the negative pole of power are connected with the positive pole rod and the negative pole rod of the top of pool body through line respectively, one side of pool body is provided with pump machine, one end of pump machine is connected with cold water pipe, the cold water pipe penetrates the inner wall of pool body, one side of pool body is provided with auxiliary device, the auxiliary device includes frame rod, the outer surface of frame rod is connected with slide rod slidingly, the bottom of slide rod is fixedly connected with connecting rod, the bottom of connecting rod is rotatably connected with shaft, one end of shaft is provided with coil spring, the both ends of coil spring are fixedly connected with the inner wall side of connecting rod and the side of shaft respectively, one end of shaft is fixedly connected with round roller, the outer surface of round roller is fixedly connected with a plurality of stirring blades, the end of shaft away from round roller is fixedly connected with gear, the inner wall side of pool body is fixedly connected with a plurality of toothed rods, the toothed rods are linearly distributed on the inner wall side of pool body, and the outer surface of gear is engaged with the bottom of toothed rod.
[0008] As a further scheme of the utility model: the outer surface shape of the stirring blade is S-shaped.
[0009] As a further scheme of the utility model: the edge of the end of the stirring blade away from the round roller is arc-shaped.
[0010] As a further scheme of the utility model: one side of the connecting rod is fixedly connected with a support rod, and the outer surface part of the shaft is rotatable in the inner wall of the end of the support rod away from the connecting rod.
[0011] As a further scheme of the utility model: the top of the slide rod is fixedly connected with an auxiliary plate, and the outer surface of the auxiliary plate is provided with a through groove.
[0012] As a further scheme of the utility model: the outer surface of the negative pole plate is provided with a plurality of through holes, and the through holes are linearly and uniformly distributed on the outer surface of the negative pole plate.
[0013] As a further scheme of the utility model: the edges of the two sides of the negative pole plate are arc-shaped, and the surface of the negative pole plate is arc-shaped.
[0014] (Three) beneficial effects
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] 1. The aluminum alloy surface anodic oxidation uniform treatment device, through the setting auxiliary device, when anodic oxidation treatment is carried out to the aluminum alloy workpiece, the sliding rod can be pushed to control the sliding rod to move back and forth on the outer surface of the frame rod, the gear on the one end of the shaft rod enters or is away from the outer surface of the toothed rod to drive the shaft rod to rotate in two directions, the stirring piece on the outer surface of the round roller stirs the electrolyte, promotes the flow of the electrolyte to make the electrolyte of different temperatures in the pool body distribute uniformly, and reduces the concentration polarization, prevents the bubbles from being attached to the surface of the aluminum alloy workpiece to cause the uneven film layer, and improves the uniformity and stability of the treatment device to the aluminum alloy workpiece surface anodic oxidation treatment.
[0017] 2. The aluminum alloy surface anodic oxidation uniform treatment device, by setting a plurality of through holes on the outer surface of the negative plate, the contact area of the negative plate and the electrolyte can be enlarged, the local current density is reduced, and the electric field distribution is more uniform.
[0018] 3. The aluminum alloy surface anodic oxidation uniform treatment device, by setting the surface of the negative plate as an arc surface, the curvature radius of the surface of the negative plate is increased, the electric field intensity concentration at the negative plate is reduced, and the local discharge phenomenon caused by sharp corners or edges is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a three-dimensional structure schematic view of the utility model;
[0020] Figure 2 It is a structure schematic view of the pool body;
[0021] Figure 3 It is a local section structure schematic view of the pool body;
[0022] Figure 4 It is a structure schematic view of the sliding rod.
[0023] In the drawing: 1, pool body; 2, auxiliary device; 21, frame rod; 22, sliding rod; 23, connecting rod; 24, shaft rod; 25, round roller; 26, stirring piece; 27, coil spring; 28, gear; 29, toothed rod; 210, support rod; 211, auxiliary plate; 3, negative plate; 4, power supply; 5, negative rod; 6, positive rod; 7, pump; 8, cold water pipe. DETAILED DESCRIPTION
[0024] The technical scheme of the patent will be further described in detail in combination with specific embodiments.
[0025] For example, Figures 1-4The utility model provides a technical scheme: an aluminium alloy surface anodic oxidation even processing apparatus, including pool body 1 and power 4, the top of pool body 1 is provided with positive pole rod 6 and negative pole rod 5, and the inner wall both sides of pool body 1 are provided with a plurality of negative pole plate 3, and negative pole plate 3 is installed at one side of negative pole rod 5 through bolt, and power 4 is located at one side of pool body 1, and the positive pole and negative pole of power 4 are connected with positive pole rod 6 and negative pole rod 5 at the top of pool body 1 through line respectively, and one side of pool body 1 is provided with pump machine 7, and one end of pump machine 7 is connected with cold water pipe 8, and cold water pipe 8 penetrates the inner wall of pool body 1, and one side of pool body 1 is provided with auxiliary device 2, and auxiliary device 2 includes frame rod 21, and the outer surface of frame rod 21 is slidably connected with sliding rod 22, and the bottom of sliding rod 22 is fixedly connected with connecting rod 23, and the bottom of connecting rod 23 is rotatably connected with shaft 24, and one end of shaft 24 is provided with coil spring 27, and the both ends of coil spring 27 are fixedly connected with the inner wall one side of connecting rod 23 and the one side of shaft 24 respectively, and one end of shaft 24 is fixedly connected with circular roller 25, and the outer surface of circular roller 25 is fixedly connected with a plurality of stirring blades 26, and one end of shaft 24 away from circular roller 25 is fixedly connected with gear 28, and the inner wall one side of pool body 1 is fixedly connected with a plurality of toothed rods 29, and toothed rods 29 are linearly distributed at the inner wall one side of pool body 1, and the outer surface of gear 28 is engaged with the bottom of toothed rods 29, by setting circular roller 25, when using anodic oxidation treatment device to carry out surface treatment to aluminium alloy work piece, using clamp clamps aluminium alloy work piece and hangs in positive pole rod 6, makes aluminium alloy work piece immerse in the electrolyte inside in pool body 1, then connects one end of pump machine 7 with the water supply pipeline of cold water machine through pipeline, connects the end of cold water pipe 8 away from pump machine 7 with the inlet pipeline of cold water machine through pipeline, then opens power 4, makes positive pole rod 6 and negative pole rod 5 electrify, makes the surface of aluminium alloy oxidize and produce alumina film, simultaneously operates cold water machine and pump machine 7 during the processing, by pump machine 7, the cold water output at cold water machine is sent into the inside of cold water pipe 8 and moves in the inside of pool body 1 and carries out the cooling of electrolyte in the inside of pool body 1, and by one end of cold water pipe 8 enters the inside of cold water machine again, simultaneously can hold the outer surface of sliding rod 22 and push sliding rod 22 and slide on the outer surface of frame rod 21 from one end to the other end, when sliding rod 22 moves, the gear 28 of the one side of shaft 24 at the bottom of connecting rod 23 and the surface of toothed rods 29 contact and rotate, by gear 28, shaft 24 and circular roller 25 rotate and make coil spring 27 deform, then after gear 28 is away from the outer surface of toothed rods 29, coil spring 27 restores original shape and drives shaft 24 and circular roller 25 to rotate towards the original direction, by the stirring blade 26 on the outer surface of circular roller 25, the electrolyte in the inside of pool body 1 is stirred, makes the electrolyte of different temperature in the inside of pool body 1 distribute evenly, after processing for a period of time, closes power 4 and cold water machine, unscrews the clamp and takes out the clamp and aluminium alloy work piece from the inside of pool body 1, by setting auxiliary device 2, when carrying out anodic oxidation treatment to aluminium alloy work piece, can push sliding rod 22 and control sliding rod 22 and move back and forth on the outer surface of frame rod 21,The gear 28 at one end of the shaft 24 is driven to rotate in two directions by entering or moving away from the outer surface of the toothed rod 29, the stirring piece 26 on the outer surface of the circular roller 25 stirs the electrolyte, promotes the flow of the electrolyte, makes the electrolyte at different temperatures in the pool body 1 uniformly distributed, reduces the concentration polarization, prevents bubbles from adhering to the surface of the aluminum alloy workpiece to cause uneven film layer, and improves the uniformity and stability of the anodic oxidation treatment of the aluminum alloy workpiece surface by the treatment device.
[0026] Specifically, as shown in Figures 2-4 The outer surface shape of the stirring piece 26 is S-shaped, the stirring piece 26 is arranged to be S-shaped, so that the stirring piece 26 is more easily pushed when stirring the electrolyte, and the stirring effect of the electrolyte is better, and the edge of the end of the stirring piece 26 away from the circular roller 25 is arc-shaped, so that bubbles are not easily attached to the surface of the stirring piece 26 during stirring of the electrolyte.
[0027] Specifically, as shown in Figures 2-4 One side of the connecting rod 23 is fixedly connected with a supporting rod 210, and the outer surface of the shaft 24 is rotatable on the inner wall of the end of the supporting rod 210 away from the connecting rod 23. The supporting rod 210 can further limit the angle between the shaft 24 and the connecting rod 23, and can avoid the angle of the end of the shaft 24 away from the connecting rod 23 from being skewed as much as possible. The top end of the sliding rod 22 is fixedly connected with an auxiliary plate 211, and the outer surface of the auxiliary plate 211 is provided with a through groove. Holding the through groove on the outer surface of the auxiliary plate 211 can more conveniently control the auxiliary plate 211 to push or pull the sliding rod 22 to move.
[0028] Specifically, as shown in Figures 1-4 The outer surface of the negative plate 3 is provided with a plurality of through holes, and the through holes are linearly and uniformly distributed on the outer surface of the negative plate 3. By providing a plurality of through holes on the outer surface of the negative plate 3, the contact area of the negative plate 3 with the electrolyte can be increased, the local current density can be reduced, and the electric field distribution can be more uniform. The two side edges of the negative plate 3 are arc-shaped, and the surface of the negative plate 3 is arc-shaped. By arranging the surface of the negative plate 3 to be arc-shaped, the radius of curvature of the surface of the negative plate 3 is increased, the electric field intensity at the negative plate 3 is reduced, and local discharge caused by sharp corners or edges is avoided.
[0029] The working principle of the utility model is:
[0030] When the aluminum alloy workpiece is treated by the anodic oxidation treatment device, the aluminum alloy workpiece is clamped by the clamp and hung on the positive pole rod 6, so that the aluminum alloy workpiece is immersed in the electrolyte inside the pool body 1, then one end of the pump 7 is connected with the water supply pipeline of the cold water machine through the pipeline, one end of the cold water pipe 8 is connected with the water inlet pipeline of the cold water machine through the pipeline, then the power supply 4 is turned on, the positive pole rod 6, the negative pole rod 5 and the negative pole plate 3 are electrified, the surface of the aluminum alloy is oxidized to generate an aluminum oxide film, and the cold water machine and the pump 7 are operated at the same time during the treatment process, the cold water output from the cold water machine is sent into the cold water pipe 8 through the pump 7, moves inside the pool body 1 and cools the electrolyte inside the pool body 1, and the cold water pipe 8 is inserted into the cold water machine again, and the slide rod 22 can be held and pushed on the outer surface of the slide rod 22 to slide on the outer surface of the frame rod 21 from one end to the other end, when the slide rod 22 moves, the gear 28 on one side of the shaft 24 at the bottom end of the connecting rod 23 is in contact with the surface of the toothed rod 29, and the gear 28 rotates, the shaft 24 and the round roller 25 are driven to rotate by the gear 28, and the coil spring 27 is deformed, then the gear 28 is away from the outer surface of the toothed rod 29, the coil spring 27 restores to the original state and drives the shaft 24 and the round roller 25 to rotate in the original direction, the stirring piece 26 on the outer surface of the round roller 25 stirs the electrolyte inside the pool body 1, the electrolyte of different temperatures in the pool body 1 is uniformly distributed, after a period of treatment, the power supply 4 and the cold water machine are turned off, the clamp is unscrewed, and the clamp and the aluminum alloy workpiece are taken out of the pool body 1.
[0031] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0032] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary skilled in the art without departing from the purpose of the present application.
Claims
1. An apparatus for uniform treatment of anodizing of an aluminum alloy surface, comprising a cell body (1) and a power supply (4), characterized in that: The top end of the pool body (1) is provided with a positive pole rod (6) and a negative pole rod (5), the inner wall of the pool body (1) is provided with a plurality of negative pole plates (3) on both sides, the negative pole plates (3) are installed on one side of the negative pole rod (5) through bolts, the power supply (4) is located on one side of the pool body (1), the positive pole and the negative pole of the power supply (4) are connected with the positive pole rod (6) and the negative pole rod (5) at the top end of the pool body (1) through lines, one end of the pump (7) is connected with a cold water pipe (8), the cold water pipe (8) penetrates the inner wall of the pool body (1), one side of the pool body (1) is provided with an auxiliary device (2), the auxiliary device (2) comprises a frame rod (21), the outer surface of the frame rod (21) is slidably connected with a sliding rod (22), the bottom end of the sliding rod (22) is fixedly connected with a connecting rod (23), the bottom end of the connecting rod (23) is rotatably connected with a shaft rod (24), one end of the shaft rod (24) is provided with a coil spring (27), the two ends of the coil spring (27) are fixedly connected with one side of the inner wall of the connecting rod (23) and one side of the shaft rod (24) respectively, one end of the shaft rod (24) is fixedly connected with a circular roller (25), the outer surface of the circular roller (25) is fixedly connected with a plurality of stirring blades (26), one end of the shaft rod (24) away from the circular roller (25) is fixedly connected with a gear (28), one side of the inner wall of the pool body (1) is fixedly connected with a plurality of toothed rods (29), the toothed rods (29) are linearly distributed on one side of the inner wall of the pool body (1), and the outer surface of the gear (28) is meshed with the bottom end of the toothed rods (29).
2. The device for uniform treatment of anodized surface of aluminum alloy according to claim 1, characterized in that: The outer surface shape of the stirring blade (26) is S-shaped.
3. The apparatus for uniform anodizing treatment of an aluminum alloy surface according to claim 2, characterized in that: The edge of one end of the stirring blade (26) away from the circular roller (25) is arc-shaped.
4. The apparatus for uniform anodizing treatment of an aluminum alloy surface according to claim 2, characterized in that: One side of the connecting rod (23) is fixedly connected with a support rod (210), and the outer surface part of the shaft rod (24) is rotatable on the inner wall of one end of the support rod (210) away from the connecting rod (23).
5. The apparatus for uniform anodizing of aluminum alloy surfaces according to claim 2, wherein: The top end of the sliding rod (22) is fixedly connected with an auxiliary plate (211), and the outer surface of the auxiliary plate (211) is provided with a through groove.
6. The apparatus for uniform anodizing of aluminum alloy surfaces of claim 1, wherein: A plurality of through holes are formed in the outer surface of the negative pole plate (3), and the through holes are linearly and uniformly distributed on the outer surface of the negative pole plate (3).
7. The apparatus for uniform anodizing treatment of an aluminum alloy surface according to claim 6, characterized in that: The edges of the two sides of the negative pole plate (3) are arc-shaped, and the surface of the negative pole plate (3) is an arc surface.