Aluminum alloy anodizing production line and anodizing process

Abstract

The present invention belongs to the technical field of aluminum alloy processing, and provides an aluminum alloy anodizing production line and an anodizing process. The production line comprises a first water washing tank, an electrolytic tank, a second water washing tank, a dyeing tank, a high-temperature closed tank, a ash removal tank, an ultrasonic water washing tank, a drying tank, and a mounting assembly that drives the aluminum alloy to move into each tank body, which are arranged in sequence, so as to solve the technical problem in the prior art that impurities generated during the oxidation process collide with or adhere to the surface of the aluminum alloy workpiece, resulting in poor oxidation quality of the aluminum alloy workpiece. The electrolyte is driven to rotate by a stirring assembly. Since the electrolyte is in a rotating flow state, the electrolyte will drive the impurities generated by the oxidation of the aluminum alloy workpiece to move and away from the aluminum alloy workpiece. The electrolyte will pass through a rear filter plate and the impurities will be retained after contacting the filter plate, thereby intercepting impurities in the electrolyte. The present invention is widely used in operating scenarios where impurities in the liquid are prevented from damaging the workpiece.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum alloy processing, and in particular relates to an aluminum alloy anodizing production line and an anodizing process. Background Art

[0002] In order to ensure that the aluminum alloy workpieces have the characteristics of corrosion resistance, good visual effects and durability during the production process, the aluminum alloy workpieces are often subjected to oxidation treatment. When the existing aluminum alloy workpieces are subjected to oxidation treatment, electrolysis is often used to oxidize the aluminum alloy workpieces.

[0003] After the aluminum alloy workpiece is oxidized, it needs to be transferred to a water pool for cleaning. During the process of the aluminum alloy workpiece moving upward and being transferred to the water pool, part of the electrolyte will be driven out of the electrolytic cell, and the electrolyte will splash everywhere, resulting in a waste of electrolyte. In response to the above technical problems, the applicant has retrieved some prior art, such as the Chinese patent with patent publication number CN116791166A, which uses two sets of protective plates on both sides of the electrolytic cell to shield the aluminum alloy workpiece when it leaves the electrolytic cell to avoid random splashing of the electrolyte. When the aluminum alloy workpiece is oxidized, impurities will be generated, and the impurities Will remain in the electrolyte, and the two sets of filter plates move towards each other to make the impurities gather above the push plate, and then the push plate is moved upward to remove the impurities on the push plate. The impurities are removed when the electrolytic cell is not in use. However, in the process of anodizing, in order to maintain the uniformity of the electrolyte and ensure that an oxide film can be evenly formed on the surface of the aluminum alloy, the electrolyte flow is usually stirred. The flow of the electrolyte will drive the impurities to move, so that the impurities collide with the aluminum alloy workpiece or adhere to the surface of the aluminum alloy workpiece during the movement, which will result in poor gloss and appearance of the surface of the aluminum alloy profile after oxidation. Summary of the invention

[0004] The purpose of the present invention is to provide an aluminum alloy anodizing production line and an anodizing process, aiming to solve the technical problem in the prior art that impurities generated during the oxidation process collide with or adhere to the surface of the aluminum alloy workpiece, resulting in poor oxidation quality of the aluminum alloy workpiece.

[0005] The present invention is implemented as follows: an aluminum alloy anodizing production line comprises a first water washing tank, an electrolytic tank, a second water washing tank, a dyeing tank, a high-temperature sealing tank, a ash removal tank, an ultrasonic water washing tank, a drying tank, and a mounting assembly for driving the aluminum alloy to move into each tank body;

[0006] The electrolytic cell is a cylindrical structure and a stirring assembly is arranged in the middle of the electrolytic cell. Multiple groups of filter plates are fixedly installed in the electrolytic cell. The multiple groups of filter plates are distributed in a circular array around the axis of the electrolytic cell. One end of the filter plate contacts the side wall of the electrolytic cell and the other end deviates from the axis of the electrolytic cell.

[0007] Further technical solution: The mounting assembly includes a mobile frame, which is driven by external power to move along the distribution direction of the tank body. A telescopic part is fixedly installed on the mobile frame, and the telescopic part drives the M-shaped structure bracket to move up and down. Each end of the bracket is provided with a hanger, and the hanger is detachably connected to the bracket. After the hanger enters the electrolytic cell, it is located on the back water side of the filter plate.

[0008] Further technical solution: The stirring assembly includes a top plate, which is fixedly mounted on the end surface of the electrolytic cell and has a first rotating power component fixedly mounted on the top plate. The first rotating power component drives the stirring shaft to rotate. The stirring shaft is coaxially arranged with the electrolytic cell and has a plurality of groups of spaced stirring blades arranged on the stirring shaft. The bottom end of the stirring shaft does not contact the bottom surface of the electrolytic cell.

[0009] Further technical solution: Multiple groups of transverse plates are fixedly installed in the electrolytic cell, and the multiple groups of transverse plates are distributed in a circular array around the axis of the electrolytic cell. The number of transverse plates is the same as the number of filter plates and the positions of the two correspond one to one. The transverse plates extend along the length direction of the upper end faces of the filter plates, and multiple groups of rotating frames are rotatably installed on the transverse plates. The rotating frames are linearly spaced along the length direction of the transverse plates, and support plates are rotatably installed in the rotating frames. A power component that drives the multiple groups of rotating frames to rotate synchronously is provided in the electrolytic cell.

[0010] Further technical solution: the rotating frame is a U-shaped structure with the opening facing away from the filter plate close to it, the rotating frame does not contact the filter plate, a rotating shaft is fixedly installed on the upper end surface of the rotating frame, the rotating shaft is rotatably connected to the cross plate, and the rotating axis of the support plate is parallel to the rotating shaft and is located at the end of the rotating frame away from the rotating shaft.

[0011] Further technical solution: an arc-shaped bar is fixedly installed on the top of the support plate, the center of the arc-shaped bar is located on the rotation axis of the support plate, and the arc-shaped bar is slidably connected to a limit block fixedly installed on the rotating frame.

[0012] Further technical solution: The power assembly includes a rack, which is parallel to the cross plate and slidably installed on the cross plate, the rack is meshed with a first gear fixedly installed on the end of the rotating shaft, and a second rotating power component that drives the rack to reciprocate is fixedly installed on the top plate.

[0013] Further technical solution: the second rotating power member drives the third gear to rotate, the third gear is meshed with the ring gear rotatably installed on the stirring shaft, the ring gear is meshed with multiple groups of second gears fixedly installed on different horizontal plates, and the second gear is eccentrically connected to a connecting rod, which is rotatably connected to the end of the rack.

[0014] Further technical solution: the electrolytic cell is connected to a circulation tank through a circulation pipe, the circulation pipe is connected to the middle of the bottom surface of the electrolytic cell, a circulation pump for extracting electrolyte from the circulation tank and transporting it to the electrolytic cell is fixedly installed on the circulation tank, a filter is fixedly installed in the circulation tank, and the filter is located above the connection position between the circulation pipe and the circulation tank.

[0015] The present invention also provides an aluminum alloy anodizing process, which is applied to the aluminum alloy anodizing production line described above, and comprises the following steps:

[0016] Step S1: Pre-treating the aluminum alloy workpiece by mechanical polishing, sandblasting or brushing, and then performing other surface treatments such as degreasing and pickling, and mounting the treated aluminum alloy workpiece on a hanger;

[0017] Step S2: The hanger drives the aluminum alloy workpiece into the first water washing tank for washing. After washing, the aluminum alloy workpiece enters the electrolytic tank for oxidation;

[0018] Step S3: After the oxidation of the aluminum alloy workpiece is completed, it enters the second washing tank for further cleaning, and then enters the dyeing tank and the high-temperature sealing tank for dyeing and sealing respectively;

[0019] Step S4: the aluminum alloy workpiece then enters a dust removal tank to remove surface impurities, and then enters an ultrasonic water washing tank for deep cleaning. The cleaned aluminum alloy workpiece enters a drying tank for drying.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The electrolyte is driven to rotate by the stirring component. Since the electrolyte is in a rotating flow state, the electrolyte will drive the impurities generated by the oxidation of the aluminum alloy workpiece to move away from the aluminum alloy workpiece. The electrolyte will pass through the rear filter plate and the impurities will be intercepted after contacting the filter plate, preventing the impurities from moving with the electrolyte and causing impact on the rear aluminum alloy workpiece and adhering to the rear aluminum alloy workpiece, thereby ensuring the oxidation quality of the aluminum alloy workpiece.

[0022] 2. The rotation of the electrolyte will cause the impurities therein to be affected by the centrifugal force. This force will cause the impurities to move toward the center of the vortex, especially near the center of the vortex. The water rotates slowly, while the edge rotates faster. This speed difference will produce a centripetal force, pushing the impurities to the central area. Since the density of impurities is greater than that of the electrolyte, the impurities will accumulate in the middle area at the bottom of the electrolytic cell, reducing the number of impurities in the outer circle electrolyte of the electrolytic cell, thereby reducing the probability of impurities colliding with and adhering to the aluminum alloy workpiece, and improving the quality of the oxide film formed on the surface of the aluminum alloy workpiece.

[0023] 3. When the support plate and the rotating frame rotate back and forth and form a complete plane, the support plate and the rotating frame will push part of the electrolyte on the front side of the filter plate (the side impacted by the electrolyte) to move to the inside of the electrolytic cell. The electrolyte moving to the inside of the electrolytic cell will quickly enter the inner circle of the electrolytic cell with impurities, and then gather in the middle area of ​​the electrolytic cell under the action of the electrolyte eddy current, further accelerating the impurities to converge to the middle of the electrolytic cell and reducing the number of impurities in the electrolyte in the outer circle of the electrolytic cell.

[0024] 4. The electrolyte moving toward the inside of the electrolytic cell will flush the filter surface of the filter plate, thereby detaching the impurities adhering to the filter plate due to the rotating flow of the electrolyte. The detached impurities follow the electrolyte to gather in the middle area of ​​the electrolytic cell, realizing automatic cleaning of the filter plate, avoiding clogging of the filter plate, ensuring that the electrolyte can pass through the filter plate evenly and stably, further ensuring the uniformity of the electrolyte in the electrolyte, and improving the oxidation quality of the aluminum alloy workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the structure of the electrolytic cell in the present invention.

[0027] Figure 3 It is a schematic diagram of the cross-sectional structure of the electrolytic cell in the present invention.

[0028] Figure 4 It is a structural schematic diagram of the horizontal plate in the present invention.

[0029] Figure 5 It is a structural schematic diagram of the rotating frame in the present invention.

[0030] Figure 6 for Figure 2 A magnified schematic diagram of the A1 region in the middle.

[0031] Figure 7 for Figure 4 A magnified schematic diagram of the A2 region in the middle.

[0032] In the attached drawings: 1. first water washing tank; 2. electrolytic tank; 3. circulation tank; 4. second water washing tank; 5. dyeing tank; 6. high temperature closed tank; 7. ash removal tank; 8. ultrasonic water washing tank; 9. drying tank; 10. movable frame; 11. telescopic member; 12. bracket; 13. hanger; 14. filter plate; 15. cross plate; 16. rotating shaft; 17. rotating frame; 18. support plate; 19. arc strip; 20. limit block; 21. first gear; 22. rack; 23. second gear; 24. connecting rod; 25. top plate; 26. first rotating power member; 27. stirring shaft; 28. stirring blade; 29. ​​gear ring; 30. second rotating power member; 31. third gear; 32. circulating pump; 33. filter screen; 34. circulating pipe; 35. mounting assembly; 36. stirring assembly; 37. power assembly. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0035] like Figure 1-Figure 7 As shown, an aluminum alloy anodizing production line provided by the present invention includes a first water washing tank 1, an electrolytic tank 2, a second water washing tank 4, a dyeing tank 5, a high-temperature sealing tank 6, a ash removal tank 7, an ultrasonic water washing tank 8, a drying tank 9, and a mounting assembly 35 that drives the aluminum alloy to move into each tank body.

[0036] The electrolytic cell 2 is a cylindrical structure and a stirring assembly 36 is arranged in the middle of the electrolytic cell 2. Multiple groups of filter plates 14 are fixedly installed in the electrolytic cell 2. The multiple groups of filter plates 14 are distributed in a circular array around the axis of the electrolytic cell 2. One end of the filter plate 14 contacts the side wall of the electrolytic cell 2 and the other end deviates from the axis of the electrolytic cell 2.

[0037] In actual application of this embodiment, the pretreated aluminum alloy workpiece is mounted by the mounting component 35, and then the mounting component 35 drives the aluminum alloy workpiece to enter the first water washing tank 1 for water washing. After the water washing is completed, the aluminum alloy workpiece enters the electrolytic tank 2 for oxidation, and the electrolyte in the electrolytic tank 2 is stirred by the stirring component 36, so that the electrolyte is in a vortex rotating state, and the side surface with a larger angle between the filter plate 14 and the inner wall of the electrolytic tank 2 is impacted by the electrolyte. After the aluminum alloy workpiece enters the electrolytic tank 2, it is distributed on the back water side of the filter plate 14. During oxidation, impurities will be generated on the surface of the aluminum alloy workpiece. Since the electrolyte is in a rotating flow state, the electrolyte will drive the impurities to move away from the aluminum alloy workpiece. The electrolyte will pass through the rear filter plate 14 and the impurities will be trapped after contacting the filter plate 14, so as to prevent the impurities from following the electrolyte to impact and adhere to the aluminum alloy workpiece on the rear side, thereby ensuring the aluminum alloy workpiece The oxidation quality of the vortex is improved, and the rotation of the electrolyte will cause the impurities therein to be affected by the centrifugal force. This force will cause the impurities to move to the center of the vortex, especially near the center of the vortex, where the water rotates slowly and the edge rotates faster. This speed difference will generate a centripetal force to push the impurities to the central area. Since the impurity density is greater than the density of the electrolyte, the impurities will accumulate in the middle area at the bottom of the electrolytic cell 2, reducing the number of impurities in the outer circle electrolyte in the electrolytic cell 2, thereby reducing the probability of impurities colliding with and adhering to the aluminum alloy workpiece, and improving the formation quality of the oxide film on the surface of the aluminum alloy workpiece. After the oxidation is completed, the aluminum alloy workpiece enters the subsequent second water washing tank 4 for cleaning. After the cleaning is completed, various processing operations in the subsequent dyeing tank 5, high-temperature sealing tank 6, ash removal tank 7, ultrasonic water washing tank 8 and drying tank 9 are completed in sequence. After the processing is completed, the aluminum alloy workpiece can be removed.

[0038] like Figure 1 , Figure 2 As shown, an aluminum alloy anodizing production line provided by the present invention, the mounting assembly 35 includes a movable frame 10, the movable frame 10 is driven by external power to move along the distribution direction of the tank body, a telescopic member 11 is fixedly installed on the movable frame 10, the telescopic member 11 drives the M-shaped structure bracket 12 to move up and down, each end of the bracket 12 is provided with a hanger 13, the hanger 13 is detachably connected to the bracket 12, and the hanger 13 is located on the back water side of the filter plate 14 after entering the electrolytic cell 2.

[0039] In actual application of this embodiment, the pre-treated aluminum alloy workpiece is installed on the hanger 13, and then the hanger 13 is installed at the end of the bracket 12. The bracket 12 can be fixed by fixing screws or by plugging. After the installation is completed, the movable frame 10 is driven to move by an external power device. The power device can be a screw slider module or a motor-driven gear with a rack. At this time, the movable frame 10 can drive the aluminum alloy workpiece to move to the top of each trough body in turn. When the aluminum alloy workpiece moves to the top of a trough body, it stops moving. At this time, the telescopic member 11 drives the bracket 12 to move downward, so that the aluminum alloy workpiece moves downward into the trough body for processing. After the processing is completed, the telescopic member 11 drives the aluminum alloy workpiece to reset, and then the movable frame 10 drives the aluminum alloy workpiece to move to the top of the next trough body. Repeat the above steps to complete various processing of the aluminum alloy workpiece.

[0040] In one embodiment of the present invention, the telescopic member 11 is an electric telescopic rod, and of course it can also be other components that can actively change the length, such as a hydraulic cylinder. The electric telescopic rod drives the aluminum alloy workpiece to move up and down, thereby completing various processing of the aluminum alloy workpiece.

[0041] like Figure 2 , Figure 3 As shown, an aluminum alloy anodizing production line provided by the present invention, the stirring assembly 36 includes a top plate 25, the top plate 25 is fixedly mounted on the end surface of the electrolytic cell 2 and a first rotating power member 26 is fixedly mounted on the top plate 25, the first rotating power member 26 drives a stirring shaft 27 to rotate, the stirring shaft 27 is coaxially arranged with the electrolytic cell 2 and a plurality of groups of spaced stirring blades 28 are arranged on the stirring shaft 27, and the bottom end of the stirring shaft 27 does not contact the bottom surface of the electrolytic cell 2.

[0042] In actual application of this embodiment, the first rotating power member 26 drives the stirring blade 28 to rotate through the stirring shaft 27. The stirring blade 28 stirs the electrolyte in the electrolytic cell 2, so that the electrolyte generates a vortex. The stirring blade 28 rotates at a constant speed. Through stirring, the concentration gradient in the electrolyte can be reduced, which helps to maintain the consistency of ion concentration in the solution, thereby promoting the uniform distribution of the electrolyte, so that an oxide film can be uniformly formed on the surface of the aluminum alloy workpiece, and the formation quality of the oxide film is improved. At the same time, stirring is conducive to the dissipation of heat in the electrolyte, preventing overheating from affecting the quality and thickness of the oxide film. The flow of the electrolyte helps the hydrogen bubbles generated during the anodizing process and attached to the surface of the aluminum alloy workpiece to detach, ensuring the uniform formation of the oxide film and avoiding the generation of pores in the oxide film. Stirring can also help remove impurities and precipitates generated during the electrolysis process to prevent them from adhering to the surface of the aluminum alloy and affecting the quality and appearance of the oxide film.

[0043] The electrolyte rotates driven by the stirring blades 28, and the rotation of the electrolyte causes the impurities therein to be affected by the centrifugal force. This force causes the impurities to move toward the center of the vortex, especially near the center of the vortex, where the water rotates slower and the edge rotates faster. This speed difference generates a centripetal force that pushes the impurities toward the central area, and since the density of the impurities is greater than that of the electrolyte, the impurities accumulate in the middle area at the bottom of the electrolytic cell 2, reducing the number of impurities in the outer circle electrolyte in the electrolytic cell 2, thereby reducing the probability of impurities colliding with and adhering to the aluminum alloy workpiece, and improving the quality of the oxide film formed on the surface of the aluminum alloy workpiece.

[0044] In one embodiment of the present invention, the first rotating power component 26 is a first motor, and of course it can also be other components capable of outputting rotating power, such as a hydraulic motor. The first motor drives the stirring blade 28 to rotate, thereby rotating the electrolyte to form a vortex.

[0045] like Figure 4-Figure 7 As shown, an aluminum alloy anodizing production line provided by the present invention is provided, wherein a plurality of sets of transverse plates 15 are fixedly installed in the electrolytic cell 2, and the plurality of sets of transverse plates 15 are distributed in a circular array around the axis of the electrolytic cell 2, and the number of the transverse plates 15 is the same as the number of the filter plates 14 and the positions of the two correspond one to one, and the transverse plates 15 extend along the length direction of the upper end surface of the filter plate 14, and a plurality of sets of rotating frames 17 are rotatably installed on the transverse plates 15, and the rotating frames 17 are linearly spaced along the length direction of the transverse plates 15, and a support plate 18 is rotatably installed in the rotating frame 17, and a power assembly 37 for driving the plurality of rotating frames 17 to rotate synchronously is provided in the electrolytic cell 2.

[0046] Specifically, the rotating frame 17 is a U-shaped structure with its opening facing away from the filter plate 14 close to it. The rotating frame 17 does not contact the filter plate 14. A rotating shaft 16 is fixedly installed on the upper end surface of the rotating frame 17. The rotating shaft 16 is rotatably connected to the cross plate 15. The rotating axis of the support plate 18 is parallel to the rotating shaft 16 and is located at the end of the rotating frame 17 away from the rotating shaft 16.

[0047] Specifically, an arc-shaped bar 19 is fixedly installed on the top of the support plate 18 , the center of the arc-shaped bar 19 is located on the rotation axis of the support plate 18 , and the arc-shaped bar 19 is slidably connected to a limit block 20 fixedly installed on the rotating frame 17 .

[0048] Specifically, the power assembly 37 includes a rack 22, which is parallel to the cross plate 15 and slidably mounted on the cross plate 15, the rack 22 is meshed with a first gear 21 fixedly mounted on the end of the rotating shaft 16, and a second rotating power member 30 is fixedly mounted on the top plate 25 to drive the rack 22 to reciprocate.

[0049] Specifically, the second rotating power member 30 drives the third gear 31 to rotate, and the third gear 31 is meshed with the ring gear 29 rotatably mounted on the stirring shaft 27. The ring gear 29 is meshed with multiple groups of second gears 23 respectively fixedly mounted on different cross plates 15. The second gear 23 is eccentrically connected to a connecting rod 24, and the connecting rod 24 is rotatably connected to the end of the rack 22.

[0050] In actual application of this embodiment, the second rotating power member 30 drives the ring gear 29 to rotate through the third gear 31, and the ring gear 29 drives the second gear 23 to rotate. Since the connecting rod 24 is eccentrically connected to the second gear 23, when the second gear 23 rotates, it can drive the rack 22 to perform reciprocating linear motion through the connecting rod 24. The rack 22 drives the rotating shaft 16 to reciprocate through the meshing first gear 21, thereby causing the rotating frame 17 to reciprocate. When the rotating frame 17 rotates, the angle between the plane where the rotating frame 17 is located and the surface of the filter plate 14 varies between 0-30 degrees;

[0051] When the angle of the filter plate 14 surface of the rotating frame 17 changes from 0 degrees to 30 degrees, the electrolyte on the front side of the rotating frame 17 in the rotating direction will push the support plate 18 to rotate until the end of the arc strip 19 contacts the limit block 20. The rotation of the support plate 18 will generate a gap between the rotating frame 17 and the rotating frame 17, and then a large amount of electrolyte can pass through the rotating frame 17 from the gap during the rotation of the rotating frame 17, reducing the effect of the rotating frame 17 and the support plate 18 on pushing the electrolyte to move toward the wall of the electrolytic cell 2, thereby reducing the number of impurities pushed to the outer circle of the electrolytic cell 2 by the rotating frame 17 and the support plate 18;

[0052] When the angle of the filter plate 14 surface of the rotating frame 17 changes from 30 degrees to 0 degrees, the electrolyte on the front side of the rotating frame 17 in the rotating direction will push the support plate 18 to rotate in the opposite direction until the end of the arc strip 19 contacts the limit block 20. At this time, the support plate 18 and the rotating frame 17 form a complete plane, and then the rotating frame 17 and the support plate 18 push part of the electrolyte on the front side of the filter plate 14 to move to the inside of the electrolytic cell 2. The electrolyte moving to the inside of the electrolytic cell 2 will carry impurities and quickly enter the inner circle of the electrolytic cell 2. Then, under the action of the electrolyte eddy current, it will gather in the middle area of ​​the electrolytic cell 2, further accelerating the impurities to converge to the middle of the electrolytic cell 2, and reducing the number of impurities in the electrolyte in the outer circle of the electrolytic cell 2.

[0053] At the same time, the electrolyte moving toward the inner side of the electrolytic cell 2 will flush the filtering surface of the filter plate 14, thereby detaching impurities adhered to the filter plate 14 due to the rotating flow of the electrolyte. The detached impurities follow the electrolyte to gather in the middle area of ​​the electrolytic cell 2, thereby realizing automatic cleaning of the filter plate 14, avoiding clogging of the filter plate 14, ensuring that the electrolyte can pass through the filter plate 14 evenly and stably, further ensuring the uniformity of the electrolyte in the electrolyte, and improving the oxidation quality of the aluminum alloy workpiece.

[0054] In one embodiment of the present invention, the second rotating power member 30 is a second motor, and of course, it can also be other components capable of outputting rotating power, such as a hydraulic motor. The second motor drives the ring gear 29 to rotate, thereby enabling the rotating frame 17 and the support plate 18 to reciprocate.

[0055] like Figure 1 , Figure 2 As shown, an aluminum alloy anodizing production line provided by the present invention, the electrolytic cell 2 is connected to the circulation tank 3 through a circulation pipe 34, the circulation pipe 34 is connected to the middle of the bottom surface of the electrolytic cell 2, and a circulation pump 32 is fixedly installed on the circulation tank 3 to extract the electrolyte in the circulation tank 3 and transport it to the electrolytic cell 2.

[0056] Specifically, a filter screen 33 is fixedly installed in the circulation tank 3 , and the filter screen 33 is located above the connection position between the circulation pipe 34 and the circulation tank 3 .

[0057] In actual application of this embodiment, the electrolytic cell 2 and the circulation cell 3 form a communicating vessel through the circulation pipe 34, and the electrolyte levels inside the two are always kept at the same height. When the aluminum alloy workpiece is oxidized, the electrolyte in the circulation cell 3 is extracted by the circulation pump 32 and transported to the electrolytic cell 2. At this time, the electrolyte in the electrolytic cell 2 drives the impurities gathered in the middle to enter the circulation cell 3 through the circulation pipe 34, thereby completing the cleaning of impurities, further reducing the content of impurities in the electrolytic cell 2, reducing the probability of collision between impurities and the aluminum alloy workpiece, and improving the oxidation quality of the aluminum alloy workpiece. The impurities at the bottom of the circulation cell 3 are filtered through the filter 33 to prevent the impurities from returning to the electrolytic cell 2 again.

[0058] like Figure 1-Figure 7 As shown, an aluminum alloy anodizing process provided by the present invention is applied to the aluminum alloy anodizing production line described above, comprising the following steps:

[0059] Step S1: Pre-treating the aluminum alloy workpiece by mechanical polishing, sandblasting or brushing, and then performing other surface treatments such as degreasing and pickling, and mounting the treated aluminum alloy workpiece on the hanger 13;

[0060] Step S2: the hanger 13 drives the aluminum alloy workpiece into the first washing tank 1 for washing. After washing, the aluminum alloy workpiece enters the electrolytic tank 2 for oxidation.

[0061] Step S3: After the aluminum alloy workpiece is oxidized, it enters the second washing tank 4 for further washing, and then enters the dyeing tank 5 and the high-temperature sealing tank 6 for dyeing and sealing respectively;

[0062] Step S4: the aluminum alloy workpiece then enters the dust removal tank 7 to remove surface impurities, and then enters the ultrasonic water washing tank 8 for deep cleaning. The cleaned aluminum alloy workpiece enters the drying tank 9 for drying.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0064] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An aluminum alloy anodizing production line, comprising a first water washing tank (1), an electrolytic tank (2), a second water washing tank (4), a dyeing tank (5), a high temperature sealing tank (6), a ash removal tank (7), an ultrasonic water washing tank (8), a drying tank (9), and a mounting assembly (35) for driving the aluminum alloy to move into each tank, wherein: The electrolytic cell (2) is of a cylindrical structure and a stirring assembly (36) is arranged in the middle of the electrolytic cell (2). A plurality of groups of filter plates (14) are fixedly installed in the electrolytic cell (2). The plurality of groups of filter plates (14) are distributed in a circular array around the axis of the electrolytic cell (2). One end of the filter plate (14) is in contact with the side wall of the electrolytic cell (2) and the other end is offset from the axis of the electrolytic cell (2). A plurality of sets of transverse plates (15) are fixedly installed in the electrolytic cell (2), and the plurality of sets of transverse plates (15) are distributed in a circular array around the axis of the electrolytic cell (2). The number of the transverse plates (15) is the same as the number of the filter plates (14), and the positions of the two are one-to-one corresponding. The transverse plates (15) extend along the length direction of the upper end surface of the filter plate (14). A plurality of sets of rotating frames (17) are rotatably installed on the transverse plates (15), and the rotating frames (17) are linearly spaced along the length direction of the transverse plates (15). A support plate (18) is rotatably installed in the rotating frame (17). A power assembly (37) for driving the plurality of sets of rotating frames (17) to rotate synchronously is provided in the electrolytic cell (2); The rotating frame (17) is a U-shaped structure with an opening facing away from the filter plate (14) close to it. The rotating frame (17) does not contact the filter plate (14). A rotating shaft (16) is fixedly mounted on the upper end surface of the rotating frame (17). The rotating shaft (16) is rotatably connected to the cross plate (15). The rotating shaft of the support plate (18) is parallel to the rotating shaft (16) and is located at an end of the rotating frame (17) away from the rotating shaft (16). An arc strip (19) is fixedly mounted on the top of the support plate (18), the center of the arc strip (19) is located on the rotation axis of the support plate (18), and the arc strip (19) is slidably connected to a limit block (20) fixedly mounted on the rotating frame (17); The mounting assembly (35) comprises a movable frame (10), the movable frame (10) being driven by external power to move along the distribution direction of the tank body, a telescopic member (11) being fixedly mounted on the movable frame (10), the telescopic member (11) driving a bracket (12) of a cross-shaped structure to move up and down, each end of the bracket (12) being provided with a hanger (13), the hanger (13) being detachably connected to the bracket (12), and the hanger (13) being located on the backwater side of the filter plate (14) after entering the electrolytic tank (2).

2. The aluminum alloy anodizing production line according to claim 1, characterized in that: The stirring assembly (36) comprises a top plate (25), the top plate (25) being fixedly mounted on the end surface of the electrolytic cell (2) and having a first rotating power member (26) fixedly mounted on the top plate (25), the first rotating power member (26) driving a stirring shaft (27) to rotate, the stirring shaft (27) being coaxially arranged with the electrolytic cell (2) and having a plurality of groups of stirring blades (28) arranged at intervals on the stirring shaft (27), the bottom end of the stirring shaft (27) not contacting the bottom surface of the electrolytic cell (2).

3. The aluminum alloy anodizing production line according to claim 1, characterized in that: The power assembly (37) comprises a rack (22) which is parallel to the horizontal plate (15) and slidably mounted on the horizontal plate (15). The rack (22) is meshed with a first gear (21) fixedly mounted on the end of the rotating shaft (16). A second rotating power member (30) is fixedly mounted on the top plate (25) and drives the rack (22) to reciprocate.

4. The aluminum alloy anodizing production line according to claim 3, characterized in that: The second rotating power member (30) drives the third gear (31) to rotate, and the third gear (31) meshes with a gear ring (29) rotatably mounted on the stirring shaft (27), and the gear ring (29) meshes with a plurality of groups of second gears (23) respectively fixedly mounted on different transverse plates (15), and a connecting rod (24) is eccentrically rotatably connected to the second gear (23), and the connecting rod (24) is rotatably connected to the end of the rack (22).

5. The aluminum alloy anodizing production line according to claim 1, characterized in that: The electrolytic cell (2) is connected to a circulation tank (3) via a circulation pipe (34). The circulation pipe (34) is connected to the middle of the bottom surface of the electrolytic cell (2). A circulation pump (32) is fixedly installed on the circulation tank (3) for extracting electrolyte from the circulation tank (3) and transporting it to the electrolytic cell (2). A filter screen (33) is fixedly installed in the circulation tank (3). The filter screen (33) is located above the connection position between the circulation pipe (34) and the circulation tank (3).

6. An aluminum alloy anodizing process, applied to an aluminum alloy anodizing production line as claimed in any one of claims 1 to 5, comprising the following steps: Step S1: Pre-treating the aluminum alloy workpiece by mechanical polishing, sandblasting or brushing, then performing degreasing and pickling surface treatment, and mounting the treated aluminum alloy workpiece on a hanger (13); Step S2: the hanger (13) drives the aluminum alloy workpiece into the first water washing tank (1) for washing. After washing, the aluminum alloy workpiece enters the electrolytic tank (2) for oxidation. Step S3: After the oxidation of the aluminum alloy workpiece is completed, it enters the second washing tank (4) for further washing, and then enters the dyeing tank (5) and the high-temperature sealing tank (6) for dyeing and sealing respectively; Step S4: the aluminum alloy workpiece then enters a dust removal tank (7) to remove surface impurities, and then enters an ultrasonic water washing tank (8) for deep cleaning. The cleaned aluminum alloy workpiece enters a drying tank (9) for drying.

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