Circulating self-cleaning type anode precision oxidation device

Abstract

The utility model discloses a circulating self-cleaning type anode precision oxidation device which is characterized in that an oxidation anode is arranged on two side plates of a tank chamber of a tank body, and a liquid supply cavity partition plate and a backflow cavity pore plate are respectively and fixedly arranged at the front end and the rear end of the tank chamber of the tank body; a liquid supply cavity is defined by the liquid supply cavity partition plate and an end plate at the corresponding end of the tank body, a filter is arranged in the liquid supply cavity, and a plurality of fluid directors are mounted on the liquid supply cavity partition plate; a backflow cavity is defined by the backflow cavity pore plate and an end plate at the corresponding end of the tank body and leads to the liquid supply cavity through a circulating pipeline; and an anode scraping plate is arranged on the oxidation anode in a sliding manner. A flow guide cylinder of the flow guide device is fixedly installed in a plate hole of the liquid supply cavity partition plate, and a flow guide paddle is installed on an output shaft of the flow guide motor and located in the flow guide cylinder in a rotatable mode. The precise oxidation device not only can effectively filter out solid particle impurities in the electroplating liquid, but also can effectively reduce the flow velocity difference of the electroplating liquid on the section of the tank chamber, prevents the circulating electroplating liquid from generating vortexes and flowing dead angles, and is particularly suitable for precise anodic oxidation treatment.

Description

Technical Field

[0001] This utility model relates to a surface treatment technology device that uses electrochemical principles to form a metal coating on the surface of a metal component, and more particularly to an anodizing reaction tank structure with filtration and flow guiding homogenization functions. Background Technology

[0002] The uniformity, hardness, and structure of the coating obtained through anodizing are crucial indicators that must be considered for electroplated products. However, for existing electroplated metals, especially in precision electroplating, insufficient coating uniformity is a common problem. The main factors affecting coating uniformity are: First, during the electroplating process, the concentration difference of the electroplating solution in the electroplating tank (anodic oxidation reaction tank) directly affects the coating quality. The vortices and dead zones formed by the flow of the electroplating solution in the tank cause uneven distribution of metal ions, creating an unstable and uneven electroplating environment, thus affecting the electroplating effect and coating quality. Second, the uniformity of the electroplating solution flow rate in the tank also affects coating quality. Differences in the flow rate and velocity of the electroplating solution across the cross-section of the tank inevitably lead to differences in the contact time and path of the electroplating solution over the surface of the workpiece. This difference prevents metal ions from depositing evenly on the working surface, resulting in an uneven coating on the workpiece surface. Third, the quality and purity of the electroplating solution also directly affect the electroplating effect. When fine solid particles appear in the electroplating solution, these particles will form catalytic reduction nuclei. The metal ions in the plating solution will not be deposited on the workpiece but will be reduced and consumed on the particles. The plating solution will quickly become unusable and scrap, which will not only affect the plating quality of the workpiece, but also directly affect the electroplating efficiency, and have a significant impact on the plating, especially the precision plating. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a circulating self-cleaning precision anodic oxidation device, which can not only effectively filter out solid particulate impurities in the electroplating solution and ensure the purity of the electroplating solution in the tank, but also effectively reduce the flow velocity difference of the electroplating solution on the cross-section of the tank, and avoid the generation of eddies and dead flow angles in the circulating electroplating solution.

[0004] To solve the above-mentioned technical problems, the present invention provides a circulating self-cleaning precision anode oxidation device, comprising a tank and an oxidation anode. The oxidation anode is installed on both side plates of the tank chamber. A liquid supply chamber baffle and a reflux chamber orifice plate are fixedly installed at the front and rear ends of the tank chamber, respectively. The liquid supply chamber baffle and the end plates at the corresponding ends of the tank form a liquid supply chamber, in which a filter is provided. Several flow guides are installed on the liquid supply chamber baffle. The reflux chamber orifice plate and the end plates at the corresponding ends of the tank form a reflux chamber, which is connected to the liquid supply chamber through a circulation pipeline. An anode scraper is slidably disposed on the oxidation anode.

[0005] Furthermore, the flow guide includes a flow guide cylinder and a flow guide motor. The flow guide cylinder is fixedly installed in the plate hole of the liquid supply chamber partition, and a flow guide paddle is installed on the output shaft of the flow guide motor. The flow guide paddle is rotatably located in the flow guide cylinder.

[0006] Furthermore, the flow guiding motor is fixedly connected to the flow guiding cylinder or the liquid supply chamber partition via a motor bracket.

[0007] Furthermore, the filter includes a filter holder on which multiple filter elements are mounted.

[0008] Furthermore, at least one circulation pump is connected in series in the circulation pipeline, the suction port of which is connected to the return chamber and the output port of which is connected to the supply chamber.

[0009] Furthermore, the reflux cavity perforated plate has a plurality of reflux holes evenly distributed on its surface.

[0010] Furthermore, the anode scraper is slidably supported on the scraper guide rod, and a scraper screw pair is also installed on the anode scraper, the screw of which is connected to the screw motor for transmission.

[0011] Furthermore, the screw motor is a geared motor.

[0012] In the above structure, the supply chamber and return chamber are formed by the supply chamber baffle and the return chamber orifice plate at the front and rear ends of the tank body, respectively, with the corresponding end plates. The circulating electroplating solution is input into the supply chamber. The supply chamber, filled with electroplating solution, can supply liquid flow to the electroplating tank in a dispersed manner, overcoming the supply vortex and dead zone formed by the centralized supply of liquid at the pipe opening of the current supply pipeline. This is conducive to forming a stable and uniform circulating liquid flow field in the electroplating tank. Several return holes are evenly arranged on the return chamber orifice plate. The return holes are correspondingly arranged with the guides on the supply chamber baffle plate so that the electroplating solution flows from one end to the other, ensuring the consistency of the flow velocity of the electroplating solution on the cross-section of the plating tank. This allows the electroplating solution to flow through the work surface to be plated with the same flow rate and velocity, and the metal ions are uniformly deposited on the workpiece, thereby forming a uniform coating. Because a filter is installed in the supply chamber, the electroplating solution supplied to the tank must pass through the filter before entering the tank. Therefore, the filter can thoroughly filter the electroplating solution to remove fine solid particles, achieving a clean circulation of the electroplating solution, maintaining its quality and purity, and resulting in a high-precision workpiece coating. Several flow guides are installed on the baffle plate of the supply chamber. The coordinated action of multiple flow guides allows the clean electroplating solution filtered by the filter in the supply chamber to enter the tank at a consistent flow rate from different cross-sectional heights, avoiding flow rate differences across the electroplating solution and ensuring the uniformity of metal ions in the plating tank. Furthermore, an anode scraper is installed on the oxide anode, which can promptly remove dirt and impurities from the anode surface, ensuring the purity of the anode surface, improving the quality and adhesion of the electroplated layer, and is particularly beneficial for the precision, high-quality electroplating of cemented carbide. In this invention, the reflux chamber is connected to the liquid supply chamber through a circulation loop, and the electroplating liquid in the tank forms a circulating flow. This not only solves the problem of environmental pollution caused by electroplating liquid leakage, but also reduces the waste caused by electroplating liquid loss, and has the dual advantages of environmental protection and low cost. Attached Figure Description

[0013] The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the present invention's circulating self-cleaning anode precision oxidation device.

[0014] Figure 1 This is a schematic diagram of a specific embodiment of the circulating self-cleaning anode precision oxidation device of this utility model;

[0015] Figure 2 yes Figure 1 A-A cross-section;

[0016] Figure 3 yes Figure 1 Schematic diagram of the middle guide vane;

[0017] Figure 4 yes Figure 3 The left view.

[0018] In the diagram, 1—tank, 2—liquid supply chamber, 3—circulation pipeline, 4—circulation pump, 5—oxidation anode, 6—return chamber, 7—return chamber orifice plate, 8—return hole, 9—screw motor, 10—scraper guide rod, 11—anode scraper, 12—scraper screw pair, 13—liquid supply chamber baffle, 14—flow guide, 141—flow guide cylinder, 142—motor bracket, 143—flow guide motor, 144—flow guide paddle, 15—filter. Detailed Implementation

[0019] like Figure 1 , Figure 2 The illustrated circulating self-cleaning precision anodizing device includes a tank 1. The bottom plate, side plates, and end plates of the tank 1 form a rectangular plating tank with an upward-facing opening. The tank plates of the tank 1 are made of high-molecular materials such as polypropylene. These materials not only have good corrosion resistance and electrical insulation properties but also effectively protect the surface of the workpiece, making them particularly suitable for forming precision plating layers on the workpiece surface. During operation, the tank 1 is filled with the appropriate electroplating solution.

[0020] Oxidation anodes 5 are installed on both sides of the tank plate of the tank body 1. A liquid supply chamber baffle 13 and a return chamber orifice plate 7 are fixedly installed at both ends of the tank chamber of the tank body 1. The liquid supply chamber baffle 13, the corresponding end plate on the tank body 1, the bottom plate of the tank body 1, and the top plate of the liquid supply chamber form a closed liquid supply chamber 2. The liquid supply chamber baffle 13 of the liquid supply chamber 2 has 15 circular holes in three rows and five columns. A guide device 14 is installed in each circular hole on the plate surface.

[0021] like Figure 3 , Figure 4 As shown, the flow guide 14 includes a flow guide cylinder 141 and a flow guide motor 143. The flow guide cylinder 141 has a cylindrical structure and is fixedly installed on the liquid supply chamber partition 13. The flow guide motor 143 is fixedly installed on the flow guide cylinder 141 through a motor bracket 142; alternatively, the flow guide motor 143 can also be fixedly installed on the liquid supply chamber partition 13 through the motor bracket 142. A flow guide impeller 144 is installed on the output shaft of the flow guide motor 143. The flow guide impeller 144 adopts a two-bladed or three-bladed impeller, and the flow guide impeller 144 can rotate to the center position of the flow guide cylinder 141.

[0022] The reflux chamber orifice plate 7, the end plate at the other end of the tank 1, the bottom plate of the tank 1, and the top plate of the reflux chamber form a closed reflux chamber 6. One end of the circulation pipe 3 is connected to the reflux chamber 6, and the other end of the circulation pipe 3 is connected to the liquid supply chamber 2. Two circulation pumps 4 are connected in series on the circulation pipe 3. The circulation pumps 4 are commonly used corrosion-resistant infusion pumps. The surface of the reflux chamber orifice plate 7 is evenly distributed with several circular through holes, but other geometric shapes are also possible. The through hole ratio of the reflux chamber orifice plate 7 is determined according to the specific electroplating process settings. Its through hole ratio is preferably controlled between 60% and 80%. In this embodiment, the through hole ratio is 70%. The through hole ratio is the ratio of the sum of the areas of the through holes on the plate surface to the area of ​​the corresponding plate surface.

[0023] Movable anode scrapers 11 are provided on both sides of the oxidation anodes 5 in the tank 1. The anode scraper 11 includes a scraper base plate and a soft scraper blade fixedly installed on the base plate. Two slides are provided on the scraper base plate, and a scraper guide rod 10 is slidably mounted on each slide. The scraper guide rod 10 is fixedly installed on the tank 1. A scraper screw assembly 12 is also installed on the scraper base plate. The drive nut of the scraper screw assembly 12 is fixedly installed on the anode scraper 11. The screw drive end of the scraper screw assembly 12 is connected to the output end of the screw motor 9. The screw motor 9 is installed on the outside of the end plate of the tank 1 and is a geared motor.

[0024] The above are only some preferred embodiments of this utility model, but this utility model is not limited thereto, and many improvements and modifications can be made. Any improvements and modifications made based on the basic principles of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A circulating self-cleaning precision anode oxidation device, comprising a tank (1) and an oxide anode (5), wherein the oxide anode (5) is mounted on both side plates of the tank chamber of the tank (1), characterized in that: The tank (1) has a liquid supply chamber baffle (13) and a return chamber perforated plate (7) fixedly installed at the front and rear ends of the tank. The liquid supply chamber baffle (13) and the end plates of the corresponding ends of the tank (1) form a liquid supply chamber (2). A filter (15) is provided in the liquid supply chamber (2). Several flow guides (14) are installed on the liquid supply chamber baffle (13). The return chamber perforated plate (7) and the end plates of the corresponding ends of the tank (1) form a return chamber (6). The return chamber (6) is connected to the liquid supply chamber (2) through the circulation pipeline (3). An anode scraper (11) is slidably installed on the oxide anode (5).

2. The circulating self-cleaning precision anodic oxidation device according to claim 1, characterized in that: The flow guide (14) includes a flow guide cylinder (141) and a flow guide motor (143). The flow guide cylinder (141) is fixedly installed in the plate hole of the liquid supply chamber partition (13). A flow guide paddle (144) is installed on the output shaft of the flow guide motor (143). The flow guide paddle (144) is rotatably located in the flow guide cylinder (141).

3. The circulating self-cleaning precision anodic oxidation device according to claim 2, characterized in that: The flow guide motor (143) is fixedly connected to the flow guide cylinder (141) or the liquid supply chamber partition (13) via the motor bracket (142).

4. The circulating self-cleaning precision anodic oxidation device according to claim 1, characterized in that: The filter (15) includes a filter support on which multiple filter elements are mounted.

5. The circulating self-cleaning precision anodic oxidation device according to claim 1, characterized in that: At least one circulation pump (4) is connected in series in the circulation pipeline (3). The suction port of the circulation pump (4) is connected to the return chamber (6), and the output port of the circulation pump (4) is connected to the liquid supply chamber (2).

6. The circulating self-cleaning precision anodic oxidation apparatus according to claim 1, characterized in that: The reflux chamber orifice plate (7) has several reflux holes (8) evenly distributed on its surface.

7. The circulating self-cleaning precision anodic oxidation device according to claim 1, characterized in that: The anode scraper (11) is slidably supported on the scraper guide rod (10). A scraper screw pair (12) is also installed on the anode scraper (11). The screw of the scraper screw pair (12) is connected to the screw motor (9) for transmission.

8. The circulating self-cleaning precision anodic oxidation apparatus according to claim 7, characterized in that: The screw motor (9) is a geared motor.

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