Electrophoresis coating device for aluminum alloy casting

Abstract

The utility model relates to the technical field of metal castings, and discloses an electrophoresis coating device for aluminum alloy castings, which comprises an outer shell, a pretreatment bin and an electrophoresis bin are arranged in the outer shell, and an external suspension conveyor is arranged in the outer shell. A plurality of hanging frames used for hanging raw materials are installed on a conveying belt of the hanging conveyor. According to the electrophoretic coating device for the aluminum alloy casting, raw materials to be treated are pre-cleaned through the pre-treatment pool, cavitation reaction is generated through the ultrasonic generator to act on the surfaces of the raw materials, the raw materials are fully cleaned, and after cleaning is completed, the raw materials are cleaned; the raw materials are driven by the external suspension conveyor to enter the electrophoresis pool for immersion type electrophoresis, after immersion type electrophoresis is completed, the raw materials are driven by the suspension conveyor to leave the electrophoresis pool, the water pump can drive the electrophoresis liquid to be sprayed out of the liquid spray head, and secondary supplementary spraying is conducted on the materials subjected to immersion electrophoresis. And the coating quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of metal casting technology, specifically to an electrophoretic coating device for aluminum alloy castings. Background Technology

[0002] Electrophoretic coating is a coating method that uses an external electric field to cause pigments and resin particles suspended in an electrophoretic solution to migrate directionally and deposit on the surface of a substrate, which is one of the electrodes. The principle of electrophoretic coating was invented in the late 1930s, but the development of this technology and its industrial application only began after 1963. Electrophoretic coating is a special film formation method that has been developed in the last 30 years. It is the most practical construction process for water-based coatings. It has the characteristics of water solubility, non-toxicity, and easy automation control, and has been rapidly and widely used in the automotive, building materials, hardware, and home appliance industries.

[0003] An existing patent (publication number: CN222491206U) discloses an electrophoretic coating spraying device. By setting an adjustment device, when the device is needed, an external water pump delivers water into the inlet pipe, then into the hose, then into the connecting pipe, and finally into the nozzle. The water is then sprayed from the nozzle onto the workpiece surface for rinsing. During the rinsing process, the nozzle angle can be adjusted to meet the multi-angle spraying requirements of different workpieces, resulting in a high spraying effect and improving the efficiency of electrophoretic coating.

[0004] Although the aforementioned patent allows for multi-angle spraying of different workpieces by adjusting the nozzle angle, resulting in a good spraying effect, it still has certain shortcomings. First, the spray electrophoresis method itself has high requirements for spraying quality. No matter how the nozzle angle is adjusted, there will still be dead corners that the spray cannot reach, thus affecting the quality of the electrophoretic coating. Second, it lacks pretreatment of raw materials before electrophoresis, and oil stains, dust, etc. carried on the outer surface of the raw materials may affect the quality of the electrophoretic coating. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an electrophoretic coating device for aluminum alloy castings, which has the advantages of pre-cleaning raw materials and uniform electrophoretic coating without dead corners, thus solving the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an electrophoretic coating device for aluminum alloy castings, comprising an outer shell, wherein a pretreatment chamber and an electrophoresis chamber are provided inside the outer shell, and an external suspended conveyor is provided inside the outer shell, wherein the conveyor belt of the suspended conveyor is equipped with multiple hangers for suspending raw materials.

[0007] The pretreatment chamber includes a pretreatment pool, and the electrophoresis chamber includes an electrophoresis pool. Both the pretreatment pool and the electrophoresis pool are equipped with independent temperature control devices. The control devices include heating modules installed on the bottom walls of the pretreatment pool and the electrophoresis pool, and temperature sensors installed on the inner sides of the pretreatment pool and the electrophoresis pool. Two horizontal plates are fixed inside the outer shell. A turntable is rotatably connected to the bottom surface of the horizontal plates, and a liquid nozzle is installed on the bottom surface of the turntable.

[0008] Furthermore, the electric pool is equipped with two stirring discs for stirring, and the upper surface of each of the two stirring discs is fixed with multiple push plates arranged in a circle.

[0009] The above scheme uses the rotation of the stirring plate to drive the pusher plate to rotate, which in turn causes the electrophoretic liquid inside the electrophoretic pool to rotate. This ensures that the particles in the electrophoretic liquid are evenly distributed, guaranteeing consistent coating thickness across all parts of the aluminum alloy casting and improving coating quality.

[0010] Furthermore, a stirring motor is installed on the bottom surface of the electric pool, and the output end of the stirring motor is connected to the stirring plate.

[0011] The above method enables the stirring motor to drive the stirring disc to rotate.

[0012] Furthermore, an adjustment motor for adjustment is installed on the upper surface of the horizontal plate, and the output end of the adjustment motor is connected to the turntable.

[0013] The above method allows the motor to be adjusted to drive the turntable to rotate, thereby achieving nozzle angle adjustment.

[0014] Furthermore, a first fixing seat is fixed to both the front and back of the outer casing. An air pump is installed on the upper surface of the first fixing seat. A gas nozzle is installed inside the outer casing. The output end of the air pump is connected to its corresponding gas nozzle.

[0015] The above method uses a gas nozzle to blow air out and remove residual water from the outer surface of the pre-cleaned parts.

[0016] Furthermore, a second fixing seat is fixed on both the front and back of the outer casing. A water pump is installed on the upper surface of the second fixing seat. The input end of the water pump is connected to the electric pool, and the output end of the water pump is connected to the liquid nozzle through a pipe.

[0017] The above method allows the water pump to spray the electrophoretic solution from the liquid nozzle, enabling a secondary spraying of the material that has already undergone soaking and electrophoresis.

[0018] Furthermore, an ultrasonic generator is installed on the bottom surface of the pretreatment tank, and the output end of the ultrasonic generator is connected to the pretreatment tank.

[0019] The above method uses an ultrasonic generator to create a cavitation reaction that acts on the surface of the raw materials, thus thoroughly cleaning them.

[0020] Furthermore, a guide plate is fixed below both the gas nozzle and the liquid nozzle, and the guide plate is inclined.

[0021] Through the above scheme, the cleaning water is returned to the pretreatment tank and the electrophoresis solution is returned to the electrophoresis pool via the guide plate.

[0022] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0023] This electrophoretic coating device for aluminum alloy castings pre-cleans the raw materials in a pretreatment tank. An ultrasonic generator produces a cavitation reaction on the surface of the raw materials, thoroughly cleaning them. After cleaning, the raw materials are driven by an external overhead conveyor into an electrophoretic pool for immersion electrophoresis. After immersion electrophoresis, the raw materials leave the electrophoretic pool under the drive of the overhead conveyor. A water pump drives the electrophoretic liquid to be sprayed from a liquid nozzle for secondary spraying of the material that has already undergone immersion electrophoresis, thereby improving the coating quality. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present application;

[0025] Figure 2 This is a sectional view of the side view of the overall deflector of this application;

[0026] Figure 3 This is a side view of the overall horizontal panel of this application;

[0027] Figure 4 This is a sectional view of the overall pretreatment pool side view of this application.

[0028] In the picture:

[0029] 1. Outer shell;

[0030] 2. Pretreatment chamber; 201. Pretreatment pool; 202. First fixed base; 203. Air pump; 204. Gas nozzle;

[0031] 3. Electrophoresis chamber; 301. Electrophoresis pool; 302. Horizontal plate; 303. Turntable; 304. Liquid nozzle; 305. Mixing plate; 306. Push plate; 307. Mixing motor; 308. Adjusting motor; 309. Second fixed base; 310. Water pump;

[0032] 4. Overhead conveyor; 5. Hanging frame;

[0033] 6. Control device; 601. Heating module; 602. Temperature sensor;

[0034] 7. Ultrasonic generator; 8. Deflector plate. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] Please see Figure 1 , Figure 2 and Figure 3 An electrophoretic coating device for aluminum alloy castings in this embodiment includes an outer shell 1. The outer shell 1 is provided with a pretreatment chamber 2 and an electrophoretic chamber 3. An external suspended conveyor 4 is provided inside the outer shell 1. The conveyor belt of the suspended conveyor 4 is equipped with multiple hangers 5 for suspending raw materials.

[0037] Please see Figure 2 , Figure 3 and Figure 4 The pretreatment chamber 2 includes a pretreatment pool 201, and the electrophoresis chamber 3 includes an electrophoresis pool 301. Both the pretreatment pool 201 and the electrophoresis pool 301 are equipped with a control device 6 that can independently control the temperature. The control device 6 includes a heating module 601 installed on the bottom wall of the pretreatment pool 201 and the electrophoresis pool 301 and a temperature sensor 602 installed on the inner side of the pretreatment pool 201 and the electrophoresis pool 301. Two horizontal plates 302 are fixed inside the outer shell 1. A turntable 303 is rotatably connected to the bottom surface of the horizontal plates 302. A liquid nozzle 304 is installed on the bottom surface of the turntable 303.

[0038] Please see Figure 2 , Figure 3 and Figure 4 The electrophoretic pool 301 is equipped with two stirring discs 305 for stirring. Multiple circumferentially arranged push plates 306 are fixed on the upper surface of each stirring disc 305. The rotation of the stirring discs 305 can drive the push plates 306 to rotate, which in turn causes the electrophoretic liquid inside the electrophoretic pool 301 to rotate. This ensures that the particles in the electrophoretic liquid are evenly distributed, guaranteeing that the coating thickness of each part of the aluminum alloy casting is consistent and improving the coating quality. A stirring motor 307 is installed on the bottom surface of the electrophoretic pool 301. The output end of the stirring motor 307 is connected to the stirring discs 305, which can drive the stirring discs 305 to rotate.

[0039] Please see Figure 2 , Figure 3 and Figure 4 An adjustment motor 308 for adjustment is installed on the upper surface of the horizontal plate 302. The output end of the adjustment motor 308 is connected to the turntable 303. The adjustment motor 308 can drive the turntable 303 to rotate, thereby realizing the angle adjustment of the nozzle. The front and back of the outer shell 1 are fixed with a first fixing seat 202. An air pump 203 is installed on the upper surface of the first fixing seat 202. A gas nozzle 204 is installed inside the outer shell 1. The output end of the air pump 203 is connected to its corresponding gas nozzle 204. Air can be blown out through the gas nozzle 204 to remove the residual water on the outer surface of the pre-cleaned parts.

[0040] Please see Figure 2 , Figure 3 and Figure 4 The outer casing 1 has a second fixing seat 309 fixed on both the front and back. A water pump 310 is installed on the upper surface of the second fixing seat 309. The input end of the water pump 310 is connected to the electrophoresis pool 301, and the output end of the water pump 310 is connected to the liquid nozzle 304 through a pipe. The water pump 310 can drive the electrophoresis liquid to be sprayed out from the liquid nozzle 304 to perform secondary spraying on the materials that have been soaked and electrophoresed. An ultrasonic generator 7 is installed on the bottom surface of the pretreatment tank 201. The output end of the ultrasonic generator 7 is connected to the pretreatment tank 201. The ultrasonic generator 7 generates a cavitation reaction that acts on the surface of the raw materials to thoroughly clean them. A guide plate 8 is fixed below both the gas nozzle 204 and the liquid nozzle 304. The guide plates 8 are inclined. Through the guidance of the guide plates 8, the cleaning water returns to the pretreatment tank 201, and the electrophoresis liquid returns to the electrophoresis pool 301.

[0041] In this embodiment, an electrophoretic coating device for aluminum alloy castings pre-cleans the raw materials to be treated in a pretreatment tank 201. An ultrasonic generator 7 generates a cavitation reaction that acts on the surface of the raw materials, thoroughly cleaning them. After cleaning, the raw materials are driven by an external overhead conveyor 4 into an electrophoretic pool 301 for immersion electrophoresis. After immersion electrophoresis, the raw materials leave the electrophoretic pool 301 driven by the overhead conveyor 4. A water pump 310 drives the electrophoretic liquid to be sprayed out from a liquid nozzle 304, performing a secondary coating on the material that has already undergone immersion electrophoresis, thereby improving the coating quality.

[0042] It should be noted that after the raw materials are hung on the hanger 5, it is necessary to ensure that the raw materials are securely hung to prevent them from falling off the suspended conveyor 4 during operation.

[0043] The working principle of the above embodiment is as follows: Before electrophoretic coating, the raw materials mounted on the hanger 5 are transferred to the pretreatment tank 201 by the overhead conveyor 4. The ultrasonic generator 7 generates a cavitation reaction that acts on the surface of the raw materials to thoroughly clean them. After cleaning, the air nozzle 204 blows out air to remove the residual water from the surface of the pre-cleaned parts. The raw materials are then driven by the overhead conveyor 4 to enter the electrophoretic pool 301 for immersion electrophoresis. The rotation of the stirring plate 305 drives the push plate 306 to rotate, which in turn rotates the electrophoretic liquid inside the electrophoretic pool 301. This ensures that the particles in the electrophoretic liquid are evenly distributed, guaranteeing a consistent coating thickness for all parts of the aluminum alloy casting and improving the coating quality. After the immersion electrophoresis is completed, the raw materials leave the electrophoretic pool 301 driven by the overhead conveyor 4. The water pump 310 drives the electrophoretic liquid to be sprayed out from the liquid nozzle 304 for a second coating of the material that has already undergone immersion electrophoresis, further improving the coating quality.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrophoretic coating device for aluminum alloy castings, comprising an outer housing (1), characterized in that: The inside of the shell body (1) is provided with a pretreatment bin (2) and an electrophoresis bin (3), the inside of the shell body (1) is provided with a hanging conveyor (4) outside, the conveying belt of the hanging conveyor (4) is provided with a plurality of hangers (5) for hanging raw materials; The pretreatment bin (2) comprises a pretreatment pool (201), the electrophoresis bin (3) comprises an electrophoresis pool (301), the inside of the pretreatment pool (201) and the electrophoresis pool (301) is provided with a control device (6) capable of independent temperature control, the control device (6) comprises a heating module (601) installed on the inner bottom wall of the pretreatment pool (201) and the electrophoresis pool (301) and a temperature sensor (602) installed on the inner side of the pretreatment pool (201) and the electrophoresis pool (301), the inside of the shell body (1) is fixed with two horizontal plates (302), the bottom surface of the horizontal plate (302) is rotatably connected with a rotating disc (303), and the bottom surface of the rotating disc (303) is provided with a liquid nozzle (304).

2. The electrophoretic painting device for an aluminum alloy casting according to claim 1, characterized by: The inside of the electrophoresis pool (301) is provided with two stirring discs (305) for stirring, and the upper surfaces of the two stirring discs (305) are fixedly provided with a plurality of push plates (306) arranged in a circle.

3. The electrophoretic painting device for an aluminum alloy casting according to claim 1, characterized by: The bottom surface of the electrophoresis pool (301) is provided with a stirring motor (307), and the output end of the stirring motor (307) is connected with the stirring disc (305).

4. The electrophoretic painting device for an aluminum alloy casting according to claim 1, characterized by: The upper surface of the horizontal plate (302) is provided with an adjusting motor (308) for adjusting, and the output end of the adjusting motor (308) is connected with the rotating disc (303).

5. The electrophoretic painting device for an aluminum alloy casting according to claim 1, characterized by: The front and back surfaces of the shell body (1) are fixedly provided with a first fixing seat (202), the upper surface of the first fixing seat (202) is provided with an air pump (203), the inside of the shell body (1) is provided with a gas nozzle (204), and the output end of the air pump (203) is connected with the corresponding gas nozzle (204) in communication.

6. The electrophoretic painting device for an aluminum alloy casting according to claim 1, characterized by: The front and back surfaces of the shell body (1) are fixedly provided with a second fixing seat (309), the upper surface of the second fixing seat (309) is provided with a water pump (310), the input end of the water pump (310) is connected with the electrophoresis pool (301) in communication, and the output end of the water pump (310) is connected with the liquid nozzle (304) in communication through a pipeline.

7. The electrophoretic painting device for an aluminum alloy casting according to claim 1, characterized by: The bottom surface of the pretreatment pool (201) is provided with an ultrasonic generator (7), and the output end of the ultrasonic generator (7) is connected with the pretreatment pool (201).

8. The electrophoretic painting device for an aluminum alloy casting according to claim 5, characterized by: The lower surfaces of the gas nozzle (204) and the liquid nozzle (304) are fixedly provided with flow guides (8), and the flow guides (8) are inclined.

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