Aluminum oxidation production line for automobile parts

Abstract

The present application discloses an aluminum oxidation production line for automobile parts, comprising a formation mechanism, a first cleaning mechanism, a surface treatment mechanism, a second cleaning mechanism, and a drying mechanism. The surface treatment mechanism comprises an electroplating tank body, the top of which is provided with an anode copper rod and a cathode terminal; a circulation device, which is used to circulate the plating solution in the electroplating tank body, the circulation device is provided with a cooling unit and a pair of filtering units, the circulation device comprises a circulation bin, the top of the inner cavity of which is connected to the inner cavity of the electroplating tank body through a liquid inlet pipe; a reflux pipe, one end of which is connected to the bottom of the electroplating tank body through the cooling unit, and is provided with a circulation pump; a shunt unit, which is used to guide the plating solution entering the inner cavity of the circulation bin to one of the filtering units. In daily use, by adopting the above technical solution, the circulation pump runs continuously, so that the plating solution in the electroplating tank body passes through the shunt unit and flows through one of the filtering units for filtration, and then is cooled by the cooling unit and finally returns to the electroplating tank body.

Description

Technical Field

[0001] This invention relates to an aluminum anodizing production line for automotive parts. Background Art

[0002] Anodizing an aluminum alloy is a process in which aluminum or aluminum alloy products are placed in an electrolyte solution within an anodizing tank and subjected to electrolysis to form a thin film of aluminum oxide on their surface. This process is called anodizing of aluminum and aluminum alloys. After anodizing, an oxide film of several to hundreds of micrometers can be formed on the surface of automotive aluminum parts. Compared to the natural oxide film of aluminum alloys, its corrosion resistance, wear resistance, and decorative properties are significantly improved. The anodizing process for automotive aluminum parts involves steps such as formation, cleaning, surface treatment, and drying.

[0003] Chinese invention patent CN114694982B, "Aluminum Guide Foil Production System with Four-Sided Oxide Film Full Coverage," discloses a sequentially arranged unwinding mechanism, slitting mechanism, formation mechanism, cleaning mechanism one, surface treatment mechanism, cleaning mechanism two, drying mechanism, and winding mechanism. Its drawback is:

[0004] 1. Existing surface treatment facilities release a lot of heat during the anodizing process of aluminum. If the temperature of the electrolyte in the oxidation tank is too high and cannot be maintained within the specified range, it will affect the quality of the finished product during the aluminum oxidation process.

[0005] 2. Wastewater generated from aluminum electrolysis contains a large amount of highly soluble salts and suspended solids, which need to be treated before discharge. The existing treatment method is to adsorb and filter the wastewater with chemicals. However, the amount of wastewater generated from aluminum electrolysis is large, and the filter plates need to be replaced frequently during filtration. Existing wastewater filtration equipment is not convenient for replacing filter plates during filtration, which will affect the filtration efficiency of the wastewater. Summary of the Invention

[0006] The present invention aims to solve one of the technical problems existing in the prior art.

[0007] This application provides an aluminum anodizing production line for automotive parts, including a formation mechanism, a first cleaning mechanism, a surface treatment mechanism, a second cleaning mechanism, and a drying mechanism. The surface treatment mechanism includes:

[0008] The electroplating tank has an anode copper rod and a cathode terminal block at its top;

[0009] A circulation device, used to circulate the electroplating solution within the electroplating tank;

[0010] The circulation device includes a cooling unit and a pair of filter units.

[0011] The circulation device includes:

[0012] The circulation chamber has its inner top connected to the inner cavity of the electroplating tank via an inlet pipe.

[0013] The return pipe, one end of which is connected to the bottom of the electroplating tank through a cooling unit, is equipped with a circulation pump;

[0014] The diversion unit is used to direct the electroplating solution entering the circulation chamber to one of the filtration units.

[0015] The splitter unit includes:

[0016] The flow divider has one open end and the other end fixed to the end of the inlet pipe;

[0017] The partition divides the inner cavity of the circulation chamber into two filtration chambers.

[0018] The diversion hood is driven to rotate by a motor, the liquid inlet pipe is rotatably connected to the electroplating tank body, and each filter unit is respectively installed on the left and right sides of the partition.

[0019] The filter unit includes:

[0020] Slots are provided on the side walls of the partition;

[0021] A slot provided on a side wall of the circulation chamber;

[0022] The filter plate is slidably inserted into the slots;

[0023] A sealing unit is used to seal the filter chamber on that side when the filter plate is pulled out.

[0024] The enclosed unit includes:

[0025] An opening and closing baffle, one end of which is hinged to the bottom of the partition via a hinge pin;

[0026] A retaining edge, which is fixed on one side of the inner cavity of the circulation chamber;

[0027] The transmission component is partially movably installed in the slot and moves in conjunction with the inner end of the filter plate, while the other part is connected to the opening and closing baffle.

[0028] Transmission parts include:

[0029] A floating block is installed in the slot so as to float up and down via a spring;

[0030] A connecting rod has one end hinged to the floating block and the other end hinged to the opening and closing baffle.

[0031] The opening and closing baffle includes:

[0032] A flip plate, one end of which is hinged to the bottom of the partition through a hinge shaft;

[0033] A chute is located at the outer end of the tilting plate;

[0034] Telescopic plate, which can be slidably inserted into the slide groove;

[0035] The rocker arm has one end hinged to the top of the telescopic plate, and the other end is rotatably installed in the filter chamber via a hinge shaft.

[0036] The filter unit also includes:

[0037] The side groove is located on the outer wall of the circulation chamber and is connected to the slot in the middle.

[0038] The side panel is height-adjustable and installed in the side groove, with three springs at the bottom;

[0039] The limiting groove is located in the middle of the side plate and can engage with the outer end of the filter plate when the side plate is lowered.

[0040] The linkage unit is used to engage / disengage the limiting groove with the filter plate when the filter chamber adjacent to it at the lower end of the flow divider is connected or disconnected.

[0041] The linkage unit includes:

[0042] An arc-shaped opening connects the top of the side groove to the inner cavity of the circulation chamber;

[0043] The arc plate is fixed to the bottom of the diverter shroud and can be slidably installed in the arc-shaped opening;

[0044] The notch is located at the outer end of the bottom surface of the arc plate, and the top of the side plate can be inserted into it.

[0045] The cooling unit includes:

[0046] Several branch pipes connect the bottom of the circulation chamber to the return pipe;

[0047] Several branch pipes are fixed between each other, parallel and spaced apart;

[0048] Several semiconductor cooling chips are installed at intervals on the front and back sides of each manifold, with the cooling surface in contact with the manifold.

[0049] Cooling fans are used to supply airflow between the various distribution pipes.

[0050] The beneficial effects of the present invention are as follows:

[0051] 1. By setting up several distribution pipes, several semiconductor cooling chips and heat dissipation fans, the electroplating solution flowing through the distribution pipes is cooled down, so that the electroplating solution in the electroplating tank is kept at a suitable working temperature.

[0052] 2. By setting up a circulation chamber, return pipe, circulation pump, diversion hood, baffle, two filter chambers and a pair of filter units, the electroplating solution entering the circulation chamber can flow through one of the filter units at will. When the filter unit needs to be cleaned, the diversion hood is moved and the electroplating solution passes through the other filter unit, so that the staff can clean the filter unit that needs to be cleaned.

[0053] 3. By setting slots, slots, filter plates, opening and closing baffles, baffles, floating blocks, connecting rods, side grooves, side plates, limiting grooves, arc-shaped openings, arc plates, and notches, the opening and closing baffles corresponding to the filter chambers connected to the bottom of the diverter hood block the bottom of the filter chamber on that side, and the limiting grooves are separated from the outer ends of the corresponding filter plates, so that the filter plates can be replaced while the equipment is running.

[0054] 4. By setting up a tilting plate, chute, telescopic plate and rocker arm, when the tilting plate descends / rises around the hinge axis, the telescopic plate moves towards / away from the partition at the same time, so that when it is opened, a flow channel with a sufficient cross-sectional area can be quickly formed between the telescopic plate and the inner wall of the circulation chamber. Attached Figure Description

[0055] Figure 1 This is a front view of the aluminum anodizing production line for automotive parts in an embodiment of this application;

[0056] Figure 2 This is a schematic diagram of the internal structure of the circulation device in an embodiment of this application;

[0057] Figure 3 for Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0058] Reference numerals

[0059] 100-Chemical formation mechanism, 200-Cleaning mechanism 1, 300-Surface treatment mechanism, 400-Cleaning mechanism 2, 500-Drying mechanism, 1-Electroplating tank, 2-Anode copper rod, 3-Cathode terminal, 4-Circulation device, 41-Circulation bin, 42-Liquid inlet pipe, 43-Return pipe, 44-Circulation pump, 5-Cooling unit, 51-Diverter pipe, 52-Heat sink, 53-Semiconductor refrigeration sheet, 54-Heat dissipation fan, 6-Filter unit, 61-Slot, 62-Through slot, 63-Filter plate, 64-Side slot, 6 5-Side plate, 66-Spring 3, 67-Restriction groove, 7-Enclosure unit, 71-Opening and closing baffle, 711-Flipping plate, 712-Slide groove, 713-Telescopic plate, 714-Rock arm, 715-Spring 2, 716-Anti-detachment groove, 717-Restriction insert block, 72-Partition plate, 73-Transmission component, 731-Floating block, 732-Spring 1, 733-Connecting rod, 74-Filter chamber, 8-Linkage unit, 81-Arc-shaped opening, 82-Arc plate, 83-Notch, 9-Diverter unit, 91-Diverter hood, 92-Partition plate. Detailed Implementation

[0060] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0061] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0062] The aluminum anodizing production line for automotive parts provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0063] Example 1:

[0064] like Figures 1 to 2 As shown in the figure, this application provides an aluminum oxidation production line for automotive parts, including a formation mechanism 100, a first cleaning mechanism 200, a surface treatment mechanism 300, a second cleaning mechanism 400, and a drying mechanism 500. The surface treatment mechanism 300 includes an electroplating tank 1, with an anode copper rod 2 and a cathode terminal 3 on its top; and a circulation device 4, which is used to circulate the electroplating solution in the electroplating tank 1. The circulation device 4 is provided with a cooling unit 5 and a pair of filter units 6.

[0065] Furthermore, the circulation device 4 includes a circulation chamber 41, the top of which is connected to the inner cavity of the electroplating tank 1 through a liquid inlet pipe 42; a reflux pipe 43, one end of which is connected to the bottom of the electroplating tank 1 through a cooling unit 5 and is provided with a circulation pump 44; and a diversion unit 9, which is used to guide the plating liquid entering the inner cavity of the circulation chamber 41 to one of the filter units 6.

[0066] In this embodiment of the application, due to the above-described structure, the automotive aluminum parts to be electroplated are hung on a bracket, which is then hung on the anode copper rod 2, allowing each automotive aluminum part to be immersed in the electroplating solution in the electroplating tank 1. The lower end of the cathode terminal 3 extends into the electroplating tank 1, and when energized, oxidation is performed. Simultaneously, the circulation pump 44 operates, allowing the electroplating solution and impurities in the inner cavity of the electroplating tank 1 to be immersed together from the inlet pipe 42 into the circulation chamber 41. After being filtered by the filter unit 6 and cooled by the cooling unit 5, the solution returns to the electroplating tank 1 through the return pipe 43.

[0067] Example 2:

[0068] like Figure 2 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the diversion unit 9 includes a diversion cover 91, one end of which is open and the other end is fixedly connected to the end of the liquid inlet pipe 42; a partition 92, which divides the middle part of the inner cavity of the circulation chamber 41 into two filter chambers 74, the diversion cover 91 is driven to rotate by a motor, the liquid inlet pipe 42 is rotatably connected to the electroplating tank body 1, and each filter unit 6 is respectively installed on the left and right sides of the partition 92.

[0069] Furthermore, the filter unit 6 includes a slot 61, which is arranged on the side wall of the partition 92; a slot 62, which is arranged on the side wall of the circulation chamber 41; a filter plate 63, which can be slidably inserted in the slot 61 and the slot 62; and a closing unit 7, which is used to seal the side filter chamber 74 when the filter plate 63 is pulled out.

[0070] Furthermore, the closed unit 7 includes an opening and closing baffle 71, one end of which is hinged to the bottom end of the partition 92 through a hinge shaft; a baffle 72, which is fixed on one side of the inner cavity of the circulation chamber 41; a transmission member 73, part of which is movably installed in the slot 61 and moves in coordination with the inner end of the filter plate 63, and the other part is transmission-connected to the opening and closing baffle 71.

[0071] Furthermore, the transmission component 73 includes a floating block 731, which is mounted in the slot 61 and can float up and down by a spring 732; and a connecting rod 733, one end of which is hinged to the floating block 731 and the other end of which is hinged to the opening and closing baffle 71.

[0072] In this embodiment of the application, due to the above-described structure, the high-temperature electroplating solution carrying impurities flows through the inlet pipe 42, the diversion hood 91, one of the filter chambers 74, and the corresponding filter plate 63, and then enters the cooling unit 5. At the lowest position of the floating block 731 corresponding to the filter chamber 74, the corresponding spring 732 is compressed and shortened. Under the push of the corresponding connecting rod 733, the top surface of the corresponding opening / closing baffle 71 disengages from the bottom surface of the partition 92 and the bottom surface of the corresponding baffle 72, forming a flow channel between it and the side wall of the circulation chamber 41. Coolant can then enter the circulation chamber from this flow channel. 41. At the bottom of the inner cavity, it enters the cooling unit 5. At this time, the spring 732 on the other side releases elastic potential energy, and the corresponding floating block 731 is at the highest position. Under the pull of the corresponding connecting rod 733, the top surface of the corresponding opening and closing baffle 71 abuts against the bottom surface of the partition 92 and the bottom surface of the baffle 72, so that the corresponding filter plate 63 is pushed out of the slot 61, making it convenient for the staff to take out the filter plate 63 on this side. Both sides contact the inner wall of the circulation chamber 41, so that the corresponding filter chamber 74 and the bottom of the inner cavity of the circulation chamber 41 are sealed, and the high-temperature electroplating liquid will not enter the filter chamber 74 on this side.

[0073] Example 3:

[0074] like Figures 2 to 3 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the opening and closing baffle 71 includes a flip plate 711, one end of which is hinged to the bottom of the partition 92 through a hinge; a slide groove 712, which is arranged at the outer end of the flip plate 711; a telescopic plate 713, which can be slidably inserted in the slide groove 712; and a rocker arm 714, one end of which is hinged to the top of the telescopic plate 713, and the other end of which is rotatably installed in the filter chamber 74 through a hinge.

[0075] Furthermore, the opening and closing baffle 71 also includes a spring 2 715, which is arranged between the inner end of the slide groove 712 and the telescopic plate 713; an anti-slip groove 716, which is arranged at the bottom of the telescopic plate 713; and a limiting plug 717, which is fixed on the flip plate 711 and slides with the limiting groove 67.

[0076] In this embodiment of the application, due to the above-described structure, when the floating block 731 of the connecting rod and the filter plate 63 cooperate, the flip plate 711 and the telescopic plate 713 rotate around the corresponding hinge axis when the floating block 731 descends / rises, causing the telescopic plate 713 to descend / rise away from the hinge axis end. At the same time, under the cooperation of the rocker arm 714, the telescopic plate 713 extends / retracts from the slide groove 712, causing the outer end of the telescopic plate 713 to quickly move away from / approach the side wall of the circulation chamber 41. During the sliding process of the telescopic plate 713 in the slide groove 712, the spring 715 can improve its sliding stability, and the relative position of the insertion block 717 in the anti-detachment groove 716 also changes, limiting the extreme position of the telescopic plate 713 and preventing the telescopic plate 713 from detaching from the slide groove 712.

[0077] Example 4:

[0078] like Figures 2 to 3 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the filter unit 6 also includes a side groove 64, which is disposed on the outer side wall of the circulation chamber 41 and connected to the slot 62 in the middle; a side plate 65, which is vertically mounted in the side groove 64 and has a spring 66 at the bottom; a limiting groove 67, which is disposed in the middle of the side plate 65 and can engage with the outer end of the filter plate 63 when the side plate 65 is lowered; and a linkage unit 8, which is used to engage / disengage the limiting groove 67 with the filter plate 63 when the filter chamber 74 adjacent to the lower end of the diversion hood 91 is connected / disconnected.

[0079] Furthermore, the linkage unit 8 includes an arc-shaped opening 81, which connects the top of the side groove 64 to the inner cavity of the circulation chamber 41; an arc plate 82, which is fixed to the bottom of the diversion hood 91 and can be slidably installed in the arc-shaped opening 81; and a notch 83, which is provided at the outer end of the bottom surface of the arc plate 82, into which the top of the side plate 65 can be inserted.

[0080] In this embodiment of the application, due to the above-described structure, the rotating column is fixed to the top of the flow divider 91 and coaxial with the inlet pipe 42. A worm gear is provided at its outer end. A motor is fixed to the outer wall of the circulation chamber 41, and the motor's output end is connected to the worm gear via a worm. When one side of the filter plate 63 is blocked by impurities, failing to achieve sufficient filtration and affecting the flow rate of the coolant through the circulation chamber 41, the other side of the filter plate 63 is pressed, causing its inner end to insert into the slot 61. This causes the floating component in the corresponding slot 61 to descend, pushing the corresponding opening / closing baffle 71 and the stop edge 72 apart via the corresponding connecting rod 733. Subsequently, the motor runs, and through the cooperation of the worm gear and the transmission column, the flow divider 91 and the inlet pipe 42 rotate, connecting the lower end of the flow divider 91 with the filter chamber 74 on the other side. During this process, the arc plates 82 located on both sides of its bottom simultaneously move, connecting with the filter plate 63 located in the flow chamber. The side plate 65 of the filter plate 63 corresponding to the filter chamber 74 rises under the action of the spring 66. When the top of the side plate 65 enters the corresponding notch 83, the corresponding limiting groove 67 disengages from the outer end of the filter plate 63. The elastic potential energy of the spring 732 pushes the floating block 731 to rise, pushing the corresponding side filter plate 63 out of the corresponding slot 61 and out of the slot 62 so that the staff can replace it. By pulling the corresponding connecting rod 733, the side opening baffle 71 rises until its top surface abuts against the bottom surface of the partition 92 and the bottom surface of the baffle 72, so that the bottom of the filter chamber 74 on this side is sealed. At the same time, the top of the partition 92 contacts the bottom surface of the side arc plate 82 to prevent the two filter chambers 74 from connecting and causing the electroplating solution to leak. During this process, the notch 83 on the other side moves away from the corresponding side plate 65. At this time, the side plate 65 is pushed down and engages with the outer end of the newly replaced filter plate 63 to prevent the filter plate 63 on this side from falling off.

[0081] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0082] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An aluminum oxidation production line for automobile parts, comprising a formation mechanism (100), a first cleaning mechanism (200), a surface treatment mechanism (300), a second cleaning mechanism (400), and a drying mechanism (500), characterized in that: The surface treatment mechanism (300) comprises: An electroplating tank (1) is provided with an anode copper rod (2) and a cathode terminal (3) on the top; A circulation device (4) for circulating the electroplating solution in the electroplating tank (1); Wherein, the circulation device (4) is provided with a cooling unit (5) and a pair of filtering units (6); The circulation device (4) comprises: A circulation chamber (41), the top of which is connected to the inner cavity of the electroplating tank (1) via a liquid inlet pipe (42); A reflux pipe (43), one end of which is connected to the bottom of the electroplating tank (1) through the cooling unit (5) and is provided with a circulation pump (44); A flow distribution unit (9) for directing the electroplating liquid entering the inner cavity of the circulation chamber (41) to one of the filter units (6); The diversion unit (9) comprises: A flow divider (91) having one end open and the other end fixedly connected to the end of the liquid inlet pipe (42); A partition (92) which divides the middle part of the inner cavity of the circulation chamber (41) into two filter cavities (74); The flow divider (91) is driven to rotate by a motor, the liquid inlet pipe (42) is rotatably connected to the electroplating tank body (1), and each of the filter units (6) is respectively installed on the left and right sides of the partition (92); The filtering unit (6) comprises: A slot (61) disposed on a side wall of the partition (92); A through groove (62) provided on a side wall of the circulation chamber (41); A filter plate (63) which can be slidably inserted in the slot (61) and the through slot (62); A sealing unit (7) used to seal the side filter chamber (74) when the filter plate (63) is pulled out; The enclosed unit (7) comprises: An opening and closing baffle (71), one end of which is hinged to the bottom end of the partition (92) via a hinge shaft; A retaining edge (72) fixedly disposed on one side of the inner cavity of the circulation chamber (41); A transmission member (73), part of which is movably mounted in the slot (61) and moves in coordination with the inner end of the filter plate (63), and the other part of which is in transmission connection with the opening and closing baffle (71); The transmission member (73) comprises: A floating block (731) is installed in the slot (61) so as to float up and down via a spring 1 (732); A connecting rod (733) has one end hinged to the floating block (731) and the other end hinged to the opening and closing baffle (71).

2. The aluminum oxidation production line for automobile parts according to claim 1 is characterized in that: The opening and closing baffle (71) comprises: A flip plate (711), one end of which is hinged to the bottom of the partition plate (92) via a hinge shaft; A slide groove (712) disposed at the outer end of the flip plate (711); A telescopic plate (713) which can be slidably inserted in the slide groove (712); A rocker arm (714) has one end hinged to the top of the telescopic plate (713), and the other end rotatably mounted in the filter chamber (74) via a hinge shaft.

3. The aluminum oxidation production line for automobile parts according to claim 1, characterized in that: The filtering unit (6) further comprises: A side groove (64) is provided on the outer side wall of the circulation chamber (41), and the middle portion of the side groove (64) is connected to the through groove (62); A side plate (65) which is installed in the side groove (64) in a liftable manner and has a spring three (66) at the bottom; a limiting groove (67) disposed in the middle of the side plate (65) and capable of engaging with the outer end of the filter plate (63) when the side plate (65) descends; A linkage unit (8) is used to engage / release the limiting groove (67) and the filter plate (63) when the lower end of the diverter cover (91) and the adjacent filter chamber (74) are connected / disconnected.

4. The aluminum oxidation production line for automobile parts according to claim 3 is characterized in that: The linkage unit (8) comprises: An arc-shaped opening (81) communicating the top end of the side groove (64) with the inner cavity of the circulation chamber (41); An arc plate (82) fixedly connected to the bottom end of the diverter cover (91) and slidably mounted in the arc-shaped opening (81); A notch (83) is provided at the outer end of the bottom surface of the arc plate (82), into which the top end of the side plate (65) can be inserted.

5. The aluminum oxidation production line for automobile parts according to claim 1, characterized in that: The cooling unit (5) comprises: A plurality of flow distribution pipes (51) connected to the bottom of the circulation chamber (41) and the return pipe (43); A plurality of heat dissipation plates (52) are fixedly connected between the flow distribution pipes (51) and are parallel and spaced apart from each other; A plurality of semiconductor cooling sheets (53) are installed at intervals on the front and back surfaces of each of the heat sinks (52), with the cooling surfaces in contact with the heat sinks (52); A heat dissipation fan (54) is used to supply airflow between the heat dissipation plates (52).

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