Automobile connecting piece electrophoretic paint tank structure

Abstract

The utility model discloses an automobile connecting piece electrophoretic paint tank structure, including electrophoretic paint tank main part, the rear side wall of electrophoretic paint tank main part is assembled with the liquid storage tank, the inside assembly of electrophoretic paint tank main part has the piece net box, the rear side inner wall of electrophoretic paint tank main part is installed with the slide, the slide is assembled with the sliding block, the lateral wall of sliding block is installed with the bearing frame, the piece net box is placed on the bearing frame, the top of liquid storage tank is assembled with the communicating pipe, the rear side wall of electrophoretic paint tank main part is assembled with the liquid inlet pipe, the setting of this automobile connecting piece electrophoretic paint tank structure, the structure design is reasonable, the liquid storage tank of electrophoretic paint tank main part rear side assembly, through the thread connection design of communicating pipe, liquid inlet pipe and sealing cover, has realized the convenient storage and nimble supplement of paint liquid, when the paint liquid in paint tank is insufficient, can carry out the liquid supplement of quick and efficient, guarantees the continuity of electrophoretic coating work.

Description

Technical Field

[0001] This utility model relates to the field of electrophoretic paint tank technology, specifically to an electrophoretic paint tank structure for automotive connectors. Background Technology

[0002] In the automotive manufacturing industry, electrophoretic coating is a key technology for improving the corrosion resistance and aesthetics of automotive connectors. Traditional electrophoretic coating tank structures for automotive connectors have several limitations in practical use. Firstly, the paint supply system often lacks flexible storage and replenishment designs. When the paint in the tank is insufficient, the replenishment process is cumbersome, affecting production efficiency. Secondly, existing paint filtration devices are mostly fixed structures, difficult to disassemble and clean. Over time, the filtration effect decreases, and impurities mixed into the paint affect coating quality. Furthermore, traditional methods for placing and fixing automotive connectors in the tank lack stability, easily causing shaking during electrophoresis, leading to uneven coating. The lifting and lowering of workpieces is also inconvenient, increasing manual operation costs and safety hazards. With the automotive manufacturing industry's increasing demands for production efficiency and product quality, a new type of electrophoretic coating tank structure is urgently needed to solve these problems. Utility Model Content

[0003] The purpose of this utility model is to provide an electrophoretic paint tank structure for automotive connectors to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an electrophoretic paint tank structure for automotive connectors, comprising an electrophoretic paint tank body, a liquid storage tank mounted on the rear side wall of the electrophoretic paint tank body, and a support mesh box mounted inside the electrophoretic paint tank body; a slide rail is vertically installed on the rear inner wall of the electrophoretic paint tank body, a slider is mounted inside the slide rail, a support frame is mounted on the side wall of the slider, and the support mesh box is placed on the support frame; a connecting pipe is mounted at the top of the liquid storage tank, and an inlet pipe is mounted on the rear side wall of the electrophoretic paint tank body; the connecting pipe and the inlet pipe are connected by a sealing cap, the inner wall of the sealing cap having an internal thread, and the outer wall of the connecting pipe having an external thread, the internal thread and the external thread engaging.

[0005] In a preferred embodiment of the electrophoretic paint tank structure for automotive connectors according to this utility model, a filter ring is installed at the end of the liquid inlet pipe located inside the sealing cover, a filter screen is installed inside the filter ring, and a rubber gasket ring is fitted around the outside of the liquid inlet pipe located outside the filter ring.

[0006] As a preferred embodiment of the electrophoretic paint tank structure for automotive connectors of this utility model, rubber blocks are evenly and equidistantly installed at the edges between the filter ring and the rubber pad ring along their axis.

[0007] In a preferred embodiment of the electrophoretic paint tank structure for automotive connectors according to this utility model, a limiting ring plate is installed at one end of the liquid inlet pipe located inside the sealing cover, and the outer diameter of the limiting ring plate is larger than the inner diameter of the sealing cover.

[0008] As a preferred embodiment of the electrophoretic paint tank structure for automotive connectors of this utility model, both ends of the front side wall of the support mesh box are equipped with inner fixing plates. The side wall of the inner fixing plate is provided with a limiting hole, and the top of the support frame is provided with a limiting groove at the limiting hole. A limiting rod is inserted into the limiting hole and the limiting groove.

[0009] As a preferred embodiment of the electrophoretic paint tank structure for automotive connectors of this utility model, a fixing plate is installed at the top of the rear side wall of the electrophoretic paint tank body, an electric push rod is installed on the fixing plate, and the drive end of the electric push rod is connected to a slider.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the structure of the electrophoretic paint tank for automotive connectors is reasonably designed;

[0011] First, the liquid storage tank mounted at the rear of the electrophoretic coating tank, through a threaded connection design of connecting pipes, inlet pipes, and sealing caps, enables convenient storage and flexible replenishment of the paint liquid. When the paint liquid in the tank is insufficient, it can be replenished quickly and efficiently, ensuring the continuity of electrophoretic coating work and improving production efficiency. Second, the combination structure of filter rings, filter screens, rubber gaskets, and rubber blocks at the end of the inlet pipe effectively filters impurities in the paint liquid. The rubber gaskets and blocks ensure the sealing and stability of the filtration device, preventing impurities from entering the electrophoretic coating tank and affecting coating quality. Simultaneously, the filter rings are easy to disassemble and clean, maintaining a long-term good filtration effect. Third, the support mesh box and the support frame, through the cooperation of fixed plates, limiting holes, limiting grooves, and limiting rods, ensure the stable placement of automotive connecting parts during the electrophoresis process, preventing shaking and ensuring uniform coating. Finally, the design of the slider, slide rail, and electric push rod allows the support mesh box to rise and fall smoothly within the electrophoretic coating tank without excessive manual intervention, reducing manual operation costs and safety risks, and improving the overall automation and ease of use of the equipment. Attached Figure Description

[0012] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the connecting pipe, sealing cap, and liquid inlet pipe of this utility model;

[0014] Figure 3 This is a schematic diagram of the filter ring of this utility model;

[0015] Figure 4 This is a schematic diagram of part A of the present utility model.

[0016] In the diagram: 1. Electrophoretic paint tank body; 2. Liquid storage tank; 3. Support mesh box; 4. Fixing plate; 5. Electric push rod; 6. Slide rail; 7. Slider; 8. Sealing cover; 9. Liquid inlet pipe; 10. Support frame; 11. Inner fixing plate; 12. Limiting groove; 13. Limiting hole; 14. Limiting rod; 15. External thread; 16. Internal thread; 17. Limiting ring plate; 18. Rubber gasket ring; 19. Filter ring; 20. Filter screen; 21. Rubber block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution:

[0019] In this technical solution, an electrophoretic paint tank structure for automotive connectors includes an electrophoretic paint tank body 1. A liquid storage tank 2 is mounted on the rear side wall of the electrophoretic paint tank body 1, and a support mesh box 3 is mounted inside the electrophoretic paint tank body 1. A slide rail 6 is vertically installed on the rear inner wall of the electrophoretic paint tank body 1, and a slider 7 is mounted inside the slide rail 6. A support frame 10 is mounted on the side wall of the slider 7, and the support mesh box 3 is placed on the support frame 10. A connecting pipe is mounted at the top of the liquid storage tank 2, and an inlet pipe 9 is mounted on the rear side wall of the electrophoretic paint tank body 1. The connecting pipe and the inlet pipe 9 are connected by a sealing cap 8. The inner wall of the sealing cap 8 has an internal thread 16, and the outer wall of the connecting pipe has an external thread 15. The internal thread 16 and the external thread 15 are engaged.

[0020] The electrophoretic paint tank body 1 is the core component of the entire device, used to contain the electrophoretic paint solution and provide a space for the electrophoretic process of automotive connectors. It is typically made of corrosion-resistant materials, such as high-quality stainless steel or specially treated carbon steel, to ensure it will not corrode under prolonged contact with the electrophoretic paint solution, thus guaranteeing the equipment's service life. The reservoir 2 is mounted on the rear wall of the electrophoretic paint tank body 1 and is mainly used to store additional electrophoretic paint solution for replenishment when the paint solution in the tank body is insufficient. The volume of the reservoir 2 can be designed according to actual production needs; generally, it is recommended that its volume be 20%-50% of the effective volume of the electrophoretic paint tank body 1 to ensure continuous production for a certain period without frequent paint replenishment. For example, if the effective volume of the electrophoretic paint tank body 1 is 1000 liters, the volume of the reservoir 2 can be designed to be 200-500 liters.

[0021] A liquid level monitoring device, such as a liquid level sensor, should be installed between the liquid storage tank 2 and the main body 1 of the electrophoretic paint tank to monitor the liquid level of the paint in both tanks in real time. When the liquid level of the paint in the main body 1 of the electrophoretic paint tank is lower than the set minimum level, the liquid level sensor can send a signal to remind the operator to replenish the paint in time, or automatically start the replenishment pump connected to the liquid storage tank 2 and the main body 1 of the electrophoretic paint tank for automatic replenishment.

[0022] The support box 3 is placed on the support frame 10, which is mounted on the side wall of the slider 7, which in turn is fitted into the slide rail 6. This structural design allows the support box 3 to move smoothly up and down within the electrophoretic paint tank body 1. The support box 3 is used to hold automotive connectors, and its mesh size needs to be designed according to the size and shape of the automotive connectors. Generally, a mesh diameter between 5-15 mm is suitable, ensuring that the electrophoretic paint can fully contact the connectors while preventing them from falling off. The support frame 10 is usually made of high-strength metal materials, such as aluminum alloy or stainless steel, to ensure that it can support the weight of the support box 3 and the automotive connectors placed inside. For example, for heavier automotive connectors, the support frame 10 can be made of stainless steel sheet with a thickness of 5-10 mm.

[0023] A buffer pad, such as a rubber pad, with a thickness of 3-5 mm should be installed at the bottom of the support box 3. This can reduce the collision between the automotive connector and the support box 3 during placement and lifting, and prevent damage to the surface of the connector. At the same time, the support frame 10 and the slider 7 should adopt a detachable connection method, such as bolt connection, to facilitate disassembly and installation when the equipment is maintained or when the support frame 10 needs to be replaced;

[0024] The slide rail 6 is vertically installed on the rear inner wall of the electrophoretic paint tank body 1, providing a vertical movement track for the slider 7. The length of the slide rail 6 should be determined according to the depth of the electrophoretic paint tank body 1 and the required lifting height of the support mesh box 3. Generally, the length of the slide rail 6 should be 100-200 mm longer than the depth of the electrophoretic paint tank body 1 to ensure that the slider 7 can move freely within the entire depth range of the electrophoretic paint tank body 1. The slider 7 and the slide rail 6 adopt a sliding fit. In order to reduce frictional resistance, wear-resistant material strips, such as polytetrafluoroethylene strips, can be installed on the contact surface between the slider 7 and the slide rail 6. The thickness of the strips is between 1-3 mm.

[0025] Limit devices, such as limit switches, should be installed at the top and bottom of the slide rail 6. When the slider 7 rises to its highest position or falls to its lowest position, the limit switch can automatically cut off the power source driving the slider 7 (such as the power supply to the electric push rod 5) to prevent the slider 7 from rising or falling excessively and causing equipment damage. At the same time, in order to ensure the stability of the slider 7's movement within the slide rail 6, guide wheels can be installed on both sides of the slider 7. The guide wheels contact the sides of the slide rail 6 to provide guidance and stability.

[0026] In some technical solutions, a filter ring 19 is installed at the end of the liquid inlet pipe 9 located inside the sealing cover 8, a filter screen 20 is installed inside the filter ring 19, and a rubber gasket ring 18 is fitted on the outside of the liquid inlet pipe 9 located outside the filter ring 19.

[0027] A filter ring 19 is installed at the end of the inlet pipe 9, located inside the sealing cover 8. The filter screen 20 inside the ring filters impurities in the paint entering the electrophoretic coating tank 1 from the storage tank 2 via the connecting pipe and the inlet pipe 9. The filter ring 19 is generally made of corrosion-resistant plastic, such as polypropylene (PP). Its inner diameter matches the outer diameter of the inlet pipe 9, with a tolerance controlled within ±0.5 mm to ensure a tight fit. The mesh size of the filter screen 20 is selected based on the size and nature of the impurities in the paint. For general electrophoretic paint, a mesh size of 100-200 is commonly used, effectively filtering out particulate impurities such as paint residue and dust, ensuring the cleanliness of the paint entering the electrophoretic coating tank 1, thereby improving the quality of the electrophoretic coating.

[0028] The filter ring 19 should be designed as a detachable structure, for example, by using a threaded connection or clamp connection to the liquid inlet pipe 9. This allows for quick removal of the filter ring 19 for cleaning or replacement of the filter screen 20 when it becomes clogged or needs cleaning. Additionally, to prevent the filter ring 19 from loosening during operation, anti-loosening devices, such as lock nuts or elastic retaining rings, can be installed at the connection points.

[0029] In some technical solutions, rubber blocks 21 are evenly and equidistantly installed along the axis at the edge between the filter ring 19 and the rubber pad ring 18.

[0030] The rubber gasket 18, fitted outside the filter ring 19 and located outside the inlet pipe 9, along with the rubber blocks 21 evenly spaced along the axis between the filter ring 19 and the rubber gasket 18, work together to provide sealing and cushioning. The rubber gasket 18 is made of oil-resistant and corrosion-resistant rubber material, such as nitrile rubber, with a thickness generally between 5-8 mm. Its inner diameter is interference-fitted with the outer diameter of the inlet pipe 9, with an interference amount between 0.2-0.5 mm, to ensure good sealing and prevent paint leakage. The number of rubber blocks 21 is generally 4-8, evenly distributed along the edge between the filter ring 19 and the rubber gasket 18. The height of the rubber blocks 21 is between 8-12 mm. Their function is to further enhance the sealing effect when the inlet pipe 9 is inserted into the sealing cap 8, and to cushion the impact force generated during installation and operation, protecting the filter ring 19 and the rubber gasket 18 and extending their service life.

[0031] The surfaces of the rubber gasket ring 18 and the rubber block 21 should be treated with anti-slip material, such as by adding anti-slip texture, to enhance their stability during sealing and cushioning processes. Additionally, antioxidants and anti-aging agents can be added to the rubber gasket ring 18 and the rubber block 21 to improve their performance stability during long-term use and extend their replacement cycle.

[0032] In some technical solutions, a limiting ring plate 17 is installed at one end of the liquid inlet pipe 9 inside the sealing cover 8, and the outer diameter of the limiting ring plate 17 is larger than the inner diameter of the sealing cover 8.

[0033] A limiting ring 17 is installed at one end of the inlet pipe 9 inside the sealing cover 8. The outer diameter of the limiting ring 17 is larger than the inner diameter of the sealing cover 8. The limiting ring 17 primarily serves to prevent the inlet pipe 9 from being excessively inserted into the sealing cover 8, ensuring accurate connection between the inlet pipe 9 and the sealing cover 8, and guaranteeing a tight seal when the connecting pipe and the inlet pipe 9 are connected through the sealing cover 8. The limiting ring 17 is generally made of the same metal material as the inlet pipe 9, such as stainless steel, with a thickness between 3-5 mm, and an outer diameter 5-10 mm larger than the inner diameter of the sealing cover 8.

[0034] The limiting ring plate 17 and the inlet pipe 9 should be connected by welding or high-strength adhesive to ensure a firm connection. Additionally, the edges of the limiting ring plate 17 should be chamfered with a radius of 1-2 mm to prevent scratches to operators or damage to other components during installation.

[0035] In some technical solutions, fixing plates 11 are installed at both ends of the front side wall of the support box 3. Limiting holes 13 are opened on the side wall of the fixing plate 11, and a limiting groove 12 is opened at the top of the support frame 10 at the limiting hole 13. Limiting rods 14 are inserted into the limiting hole 13 and the limiting groove 12.

[0036] Fixing plates 11 are installed at both ends of the front sidewall of the support mesh box 3. Limiting holes 13 on the sidewalls of these plates mate with limiting grooves 12 located at the limiting holes 13 on the top of the support frame 10. By inserting a limiting rod 14 into the limiting holes 13 and the limiting grooves 12, the support mesh box 3 is fixed to the support frame 10. The fixing plates 11 are generally made of 3-5 mm thick metal sheets, such as carbon steel or stainless steel. Their shape and dimensions should be designed according to the structure of the support mesh box 3 and the support frame 10 to ensure sufficient fixing strength. The diameters of the limiting holes 13 and the limiting grooves 12 should match the diameter of the limiting rod 14, with a tolerance controlled within ±0.2 mm. The depth of the limiting holes 13 is generally 1 / 2 to 2 / 3 of the length of the limiting rod 14 to ensure that the limiting rod 14 can be stably inserted and reliably fixed.

[0037] The limiting rod 14 should be made of high-strength metal material, such as alloy steel, and its surface should be treated with rust prevention, such as galvanizing or chrome plating. Additionally, to facilitate insertion and removal of the limiting rod 14, a handle can be provided at one end of the limiting rod 14. The handle should be 50-80 mm in length for easy operation.

[0038] In some technical solutions, a fixing plate 4 is installed on the top of the rear side wall of the electrophoretic paint tank body 1, and an electric push rod 5 is installed on the fixing plate 4. The drive end of the electric push rod 5 is connected to the slider 7.

[0039] A fixing plate 4 is installed at the top of the rear side wall of the electrophoretic paint tank body 1 for mounting an electric push rod 5. The drive end of the electric push rod 5 is connected to a slider 7. Through the extension and retraction of the electric push rod 5, the slider 7 moves up and down within the slide rail 6, thereby realizing the lifting and lowering of the support mesh box 3 within the electrophoretic paint tank body 1. The thrust of the electric push rod 5 should be selected based on the total weight of the support mesh box 3, the support frame 10, and the automotive connectors placed inside the support mesh box 3. Generally, the thrust of the electric push rod 5 is required to be greater than 1.5 times the total weight to ensure smooth movement of the slider 7. The fixing plate 4 is generally made of metal sheet with a thickness of 8-12 mm, such as stainless steel, and is firmly installed at the top of the rear side wall of the electrophoretic paint tank body 1 by bolts or welding.

[0040] The electric actuator 5 should be equipped with a stroke adjustment device, such as an adjustable limit switch, to adjust the lifting stroke of the slider 7 according to actual needs, so as to adapt to electrophoresis operations with different height requirements. At the same time, in order to ensure the operational stability and safety of the electric actuator 5, an overload protection device should be set in its control circuit. When the electric actuator 5 encounters excessive resistance or overload, the power supply should be automatically cut off to prevent the motor from burning out.

[0041] I. Initial State and Preparations

[0042] Before the electrophoretic coating process begins, a certain amount of electrophoretic paint is pre-filled into the main body 1 of the electrophoretic paint tank, and the storage tank 2 also stores sufficient spare paint. At this time, the electric push rod 5 is in its initial retracted state, which moves the slider 7, the support frame 10, and the support mesh box 3 to a position above the main body 1 of the electrophoretic paint tank, facilitating the placement of automotive connecting parts by the operator. Simultaneously, the liquid level monitoring device monitors the paint level in the main body 1 of the electrophoretic paint tank and the storage tank 2 in real time and feeds the liquid level information back to the control system.

[0043] II. Paint replenishment process and principle

[0044] When the liquid level monitoring device detects that the liquid level in the electrophoretic paint tank body 1 is lower than the set minimum level, the control system will send a signal. If set to automatic replenishment mode, the replenishment pump connecting the storage tank 2 and the electrophoretic paint tank body 1 will start automatically; if set to manual operation mode, the operator will be reminded to replenish the liquid. During replenishment, the connecting pipe at the top of the storage tank 2 and the inlet pipe 9 on the rear side wall of the electrophoretic paint tank body 1 are connected by a sealing cap 8. The internal thread 16 on the inner wall of the sealing cap 8 is tightened with the external thread 15 on the outer wall of the connecting pipe to achieve a sealed connection. The liquid flows from the storage tank 2 through the connecting pipe to the inlet pipe 9. During this process, the filter ring 19 at the end of the inlet pipe 9 and the internal filter screen 20 function to filter out impurities in the liquid, ensuring that the liquid entering the electrophoretic paint tank body 1 is clean. The rubber gasket ring 18 and the rubber block 21 further enhance the sealing performance and prevent liquid leakage. The limiting ring plate 17 ensures that the inlet pipe 9 is accurately inserted into the sealing cap 8, maintaining the stability and sealing of the connection.

[0045] III. Workpiece Placement and Lifting Process and Principle

[0046] The operator places the automotive connector into the support box 3. The limiting holes 13 on the fixing plates 11 at both ends of the front side wall of the support box 3 are aligned with the limiting grooves 12 at the top of the support frame 10. By inserting the limiting rod 14, the support box 3 is firmly fixed to the support frame 10. Subsequently, the electric push rod 5 is activated, and its drive end extends, pushing the slider 7 to slide downwards in the slide rail 6, causing the support frame 10 and the support box 3 to descend smoothly until the automotive connector is completely immersed in the paint in the electrophoretic paint tank body 1. When the slider 7 descends to the set position, the limit switch at the top or bottom of the slide rail 6 is triggered, and the electric push rod 5 stops moving, ensuring that the support box 3 is in the appropriate electrophoresis position. If it is necessary to adjust the lifting height of the support box 3, it can be set through the stroke adjustment device equipped on the electric push rod 5.

[0047] IV. Electrophoresis Process and Principle

[0048] After the automotive connector is immersed in the electrophoretic paint solution, the electrophoresis power supply is turned on. Under the influence of the electric field, the charged particles in the electrophoretic paint solution move directionally and deposit on the surface of the automotive connector to form a uniform coating. Throughout the electrophoresis process, the stable fixation of the support mesh box 3 and the good cooperation between the slider 7 and the slide rail 6 ensure that the automotive connector remains relatively stationary in the paint solution, thereby making the electrophoretic coating uniform. At the same time, the filter ring 19 and the filter screen 20 continuously filter impurities in the circulating paint solution, maintain the cleanliness of the paint solution, and ensure the quality of electrophoresis.

[0049] V. Operational procedures and principles after electrophoresis

[0050] After electrophoresis, the electric push rod 5 restarts, its drive end retracts, causing the slider 7, support frame 10, and support mesh box 3 to rise, lifting the automotive connector from the paint solution in the electrophoretic coating tank 1. When the slider 7 reaches the set highest position, the limit switch is triggered, and the electric push rod 5 stops moving. The operator removes the limit rod 14, removes the support mesh box 3 from the support frame 10, and takes out the electrophoretically coated automotive connector for further processing. Throughout the entire operation, if the electric push rod 5 encounters excessive resistance or overload, its overload protection device in the control circuit will automatically cut off the power supply to prevent the motor from burning out and ensure the safe operation of the equipment.

[0051] 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 process, method, article, or apparatus.

[0052] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A structure for an electrophoretic paint tank for automotive connectors, comprising an electrophoretic paint tank body (1), characterized in that, The rear side wall of the electrophoretic paint tank body (1) is equipped with a liquid storage tank (2), and the interior of the electrophoretic paint tank body (1) is equipped with a support mesh box (3). A slide rail (6) is vertically installed on the inner rear side of the electrophoretic paint tank body (1). A slider (7) is installed inside the slide rail (6). A support frame (10) is installed on the side wall of the slider (7). The support mesh box (3) is placed on the support frame (10). The top of the liquid storage tank (2) is equipped with a connecting pipe, and the rear side wall of the electrophoretic paint tank body (1) is equipped with a liquid inlet pipe (9). The connecting pipe and the liquid inlet pipe (9) are connected by a sealing cap (8). The inner wall of the sealing cap (8) is provided with an internal thread (16), and the outer wall of the connecting pipe is provided with an external thread (15). The internal thread (16) and the external thread (15) are matched.

2. The electrophoretic paint tank structure for automotive connectors according to claim 1, characterized in that, The end of the liquid inlet tube (9) located inside the sealing cap (8) is equipped with a filter ring (19), and a filter screen (20) is installed inside the filter ring (19). A rubber gasket ring (18) is fitted outside the liquid inlet tube (9) located outside the filter ring (19).

3. The electrophoretic paint tank structure for automotive connectors according to claim 2, characterized in that, Rubber blocks (21) are evenly and equidistantly installed along the axis at the edge between the filter ring (19) and the rubber pad ring (18).

4. The electrophoretic paint tank structure for automotive connectors according to claim 1, characterized in that, The liquid inlet pipe (9) is fitted with a limiting ring plate (17) at one end inside the sealing cover (8). The outer diameter of the limiting ring plate (17) is larger than the inner diameter of the sealing cover (8).

5. The electrophoretic paint tank structure for automotive connectors according to claim 1, characterized in that, Both ends of the front side wall of the support box (3) are equipped with inner fixing plates (11). The side wall of the inner fixing plate (11) is provided with a limiting hole (13). The top of the support frame (10) is provided with a limiting groove (12) at the limiting hole (13). A limiting rod (14) is inserted into the limiting hole (13) and the limiting groove (12).

6. The electrophoretic paint tank structure for automotive connectors according to claim 1, characterized in that, A fixing plate (4) is installed on the top of the rear side wall of the electrophoretic paint tank body (1), and an electric push rod (5) is installed on the fixing plate (4). The drive end of the electric push rod (5) is connected to a slider (7).

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