A one-way valve structure for plugging an electrophoretic part closed cavity

Abstract

This utility model relates to the field of electrophoretic parts, and discloses a one-way valve structure for sealing the sealed cavity of electrophoretic parts. It includes: a valve seat, a fixed seat at the bottom of the valve seat, a receiving tube at the bottom of the valve seat, a receiving cavity for receiving the receiving tube in the middle of the fixed seat, a tapered hole inside the receiving tube, a valve core matching the tapered hole inside the receiving tube, a guide rod at the large end of the valve core, and a return spring and a movable clamping tube sleeved on the outside of the guide rod. This utility model, through the coordinated arrangement of the return spring, valve core, and tapered hole, prevents liquid from flowing in from the outside. When the internal air pressure reaches a certain level, the valve core can be opened from the inside out, compressing the return spring, opening the valve core, and venting the gas. This allows the one-way valve structure to be installed on the workpiece throughout the entire process, ensuring that the threaded area is not electrophoretically treated, and eliminating the need for additional workstations and manual removal of tooling, thus avoiding increased processes and personnel waste.

Description

Technical Field

[0001] This utility model relates to the field of electrophoresis parts technology, specifically a one-way valve structure for sealing the closed cavity of electrophoresis parts. Background Technology

[0002] Electrophoresis is a coating method that uses an electric field to deposit paint particles onto the surface of a workpiece to form a film. It uses an external electric field to cause pigment and resin particles suspended in an electrophoretic solution to migrate directionally and deposit on the substrate surface of one of the electrodes, forming a uniform and dense coating. The electrophoretic coating is usually black or gray and has a certain thickness, typically ranging from tens to hundreds of micrometers. However, practical product requirements often necessitate areas such as threaded connections where the electrophoretic layer is absent, as this can compromise thread precision, preventing bolts from being tightened and leading to assembly failure. Therefore, during electrophoresis, masking devices are typically used to block and seal areas that are not intended for electrophoresis, allowing certain areas to retain their original function after electrophoresis. To ensure good drying results after electrophoresis, the masking devices are usually removed before the part enters the drying oven.

[0003] The current electrophoresis shielding bolts have the following problems: If the shielding bolts are installed on the threads of a sealed cavity, when the product enters the drying area after electrophoresis, the air pressure inside the sealed cavity will rise, causing the gas to burst violently. This will affect the connection of the sealed cavity and may even cause it to fail directly in severe cases. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a one-way valve structure for sealing the closed cavities of electrophoretic parts.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model discloses a one-way valve structure for sealing the sealed cavity of electrophoretic parts, including a valve seat, a fixed seat at the bottom end of the valve seat, a receiving tube at the bottom of the valve seat, a receiving cavity for receiving the receiving tube in the middle of the fixed seat, a tapered hole inside the receiving tube, a valve core matching the tapered hole inside the receiving tube, a guide rod at the large end of the valve core, a return spring and a movable tightening tube sleeved on the outside of the guide rod, and a tightening limiting post at the top end of the valve seat, with annular openings on the tightening limiting post that communicate with the inner cavity of the receiving tube.

[0006] As a preferred embodiment of this utility model, the bottom end of the valve seat is provided with a connecting pipe, and the outer wall of the connecting pipe is provided with an external threaded connection.

[0007] As a preferred embodiment of this utility model, the top of the valve seat is provided with an annular groove, and a first sealing gasket is provided inside the annular groove.

[0008] As a preferred embodiment of this utility model, the top of the fixed base is provided with a positioning ring, and the outside of the positioning ring is provided with a locking flange.

[0009] In a preferred embodiment of this invention, the locking flange, valve seat, and fixed seat are fixedly connected by studs.

[0010] As a preferred technical solution of this utility model, the inner wall of the positioning ring is provided with an internal threaded connection part, and one end of the tightened limiting post is provided with an external threaded connection post that is threadedly connected to the internal threaded connection part.

[0011] As a preferred technical solution of this utility model, the outer wall of the movable top clamping tube is annular and has a plurality of axially arranged exhaust grooves at equal intervals.

[0012] The bottom end of the storage cavity of the fixed base is provided with a load-bearing ring plate, and a second sealing gasket is provided at the connection between the load-bearing ring plate and the receiving tube.

[0013] The beneficial effects of this utility model are: This one-way valve structure for sealing the closed cavity of electrophoretic parts, through the coordinated arrangement of a return spring, valve core, and tapered orifice, prevents liquid from flowing in from the outside to the inside. When the internal air pressure reaches a certain level, the valve core can be pushed open from the inside to the outside, causing the return spring to compress, opening the valve core, and venting the gas. The one-way valve structure can be installed on the workpiece throughout the process, ensuring that the threaded area is not electrophoretized, and eliminating the need for additional workstations to manually remove the tooling, which would increase the number of processes and waste manpower. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of a one-way valve structure for sealing the closed cavity of electrophoretic parts according to the present invention; Figure 2 This is a cross-sectional view of a one-way valve structure for sealing the closed cavity of electrophoretic parts according to the present invention; Figure 3 This is a schematic diagram of the valve seat structure of a one-way valve structure for sealing the closed cavity of electrophoretic parts according to the present invention; Figure 4 This is a schematic diagram of a locking flange structure for a one-way valve used for sealing the closed cavity of electrophoretic parts according to this utility model; Figure 5 This is a schematic diagram of the fixed seat structure of a one-way valve structure for sealing the closed cavity of electrophoretic parts according to the present invention; Figure 6 This is a schematic diagram of the valve core structure of a one-way valve structure for sealing the closed cavity of electrophoretic parts according to this utility model; Figure 7 This is a schematic diagram of the tightening and limiting column structure of a one-way valve structure for sealing the closed cavity of electrophoretic parts according to this utility model.

[0015] In the diagram: 1. Valve seat; 2. Fixed seat; 3. Receiving tube; 4. Receiving cavity; 5. Tapered hole; 6. Valve core; 7. Guide rod; 8. Return spring; 9. Movable tightening tube; 10. Tightening limit post; 11. Opening; 12. Connecting tube; 13. External threaded connection part; 14. Annular groove; 15. First sealing gasket; 16. Positioning ring; 17. Locking flange; 18. Stud; 19. Internal threaded connection part; 20. External threaded connecting post; 21. Vent groove; 22. Load-bearing ring plate; 23. Second sealing gasket. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0017] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, this utility model discloses a one-way valve structure for sealing the closed cavity of electrophoretic parts, including a valve seat 1. A fixed seat 2 is provided at the bottom of the valve seat 1, and a receiving tube 3 is provided at the bottom of the valve seat 1. A receiving cavity 4 for receiving the receiving tube 3 is opened in the middle of the fixed seat 2. A tapered hole 5 is provided inside the receiving tube 3, and a valve core 6 matching the tapered hole 5 is provided inside the receiving tube 3. A guide rod 7 is provided at the large end of the valve core 6, and a return spring 8 and a movable tightening tube 9 are sleeved on the outside of the guide rod 7. A tightening limiting post 10 is provided at the top of the valve seat 1. The position post 10 has annular openings 11 at equal intervals that communicate with the inner cavity of the receiving tube 3. Through the cooperation of the return spring 8, the valve core 6 and the conical hole 5, liquid from the outside to the inside cannot flow in. When the internal air pressure reaches a certain level, the valve core 6 can be pushed open from the inside to the outside, causing the return spring 8 to compress, opening the valve core 6 and venting the gas. This allows the one-way valve structure to be installed on the workpiece throughout the process, ensuring that the threaded area is not electrophoretically treated, and eliminating the need for additional workstations to manually remove the tooling, which would increase the number of processes and waste manpower.

[0018] The valve seat 1 has a connecting pipe 12 at its bottom end, and the outer wall of the connecting pipe 12 has an external threaded connection part 13, which can realize the one-way valve structure threaded installation on the workpiece.

[0019] The valve seat 1 has an annular groove 14 at its top end, and a first sealing gasket 15 is provided inside the annular groove 14, which can seal the connection between the valve seat 1 and the fixed seat 2.

[0020] The fixed seat 2 is provided with a positioning ring 16 at its top end, and a locking flange 17 is provided on the outside of the positioning ring 16. The locking flange 17, the valve seat 1 and the fixed seat 2 are fixedly connected by studs 18, which can fix the valve seat 1 and the fixed seat 2.

[0021] The positioning ring 16 has an internal threaded connection part 19 on its inner wall, and one end of the tightening limit post 10 has an external threaded connection post 20 that is threaded to the internal threaded connection part 19. After the valve core 6 or the return spring 8 is damaged, the tightening limit post 10 can be rotated to rotate the external threaded connection post 20. The tightening limit post 10 can be removed, the movable top tightening tube 9 can be taken out, and the return spring 8 and the valve core 6 can be taken out and replaced.

[0022] The outer wall of the movable top-tightening tube 9 is annular and has multiple axially arranged exhaust grooves 21 at equal intervals, which can discharge gas from the exhaust grooves 21 after the valve core 6 is opened.

[0023] The bottom end of the storage cavity 4 of the fixed base 2 is provided with a load-bearing ring plate 22, and a second sealing gasket 23 is provided at the connection between the load-bearing ring plate 22 and the receiving tube 3, which can play a good sealing role at the connection between the receiving tube 3 and the inner wall of the storage cavity 4.

[0024] During operation, this one-way valve structure for sealing the closed cavity of electrophoretic parts, through the coordinated arrangement of the return spring 8, valve core 6, and tapered hole 5, prevents liquid from flowing in from the outside to the inside. When the internal air pressure reaches a certain level, the valve core 6 can be pushed open from the inside to the outside, causing the return spring 8 to compress, opening the valve core 6, and venting the gas. This allows the one-way valve structure to be installed on the workpiece throughout the process, ensuring that the threaded area is not electrophoretized, and eliminating the need for additional workstations to manually remove the tooling, which would increase the number of processes and waste manpower.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A one-way valve structure for plugging an electrophoretic part-enclosed cavity, characterized by, The valve includes a valve seat (1), a fixed seat (2) at the bottom of the valve seat (1), a receiving tube (3) at the bottom of the valve seat (1), a receiving cavity (4) for receiving the receiving tube (3) in the middle of the fixed seat (2), a tapered hole (5) inside the receiving tube (3), a valve core (6) matching the tapered hole (5) inside the receiving tube (3), a guide rod (7) at the large end of the valve core (6), a reset spring (8) and a movable top-tightening tube (9) sleeved on the outside of the guide rod (7), and a tightening limit post (10) at the top of the valve seat (1). The tightening limit post (10) has an annular opening (11) that communicates with the inner cavity of the receiving tube (3) at equal intervals.

2. A one-way valve structure for plugging an enclosed cavity of an electrophoretic component according to claim 1, wherein, The bottom end of the valve seat (1) is provided with a connecting pipe (12), and the outer wall of the connecting pipe (12) is provided with an external threaded connection part (13).

3. A one-way valve structure for plugging an enclosed cavity of an electrophoretic component according to claim 1, wherein, The valve seat (1) has an annular groove (14) at its top end, and a first sealing gasket (15) is provided inside the annular groove (14).

4. A one-way valve structure for plugging an enclosed cavity of an electrophoretic component according to claim 1, wherein, The top of the fixed base (2) is provided with a positioning ring (16), and the outside of the positioning ring (16) is provided with a locking flange (17).

5. A one-way valve structure for plugging an enclosed cavity of an electrophoretic component according to claim 4, wherein, The locking flange (17), valve seat (1) and fixed seat (2) are fixedly connected by studs (18).

6. A one-way valve structure for plugging an enclosed cavity of an electrophoretic component according to claim 5, wherein, The inner wall of the positioning ring (16) is provided with an internal threaded connection part (19), and one end of the tightening limit post (10) is provided with an external threaded connection post (20) that is threadedly connected to the internal threaded connection part (19).

7. A one-way valve structure for plugging an enclosed cavity of an electrophoretic component according to claim 1, wherein The outer wall of the movable top-tightening tube (9) is annular and has multiple axially arranged exhaust grooves (21) at equal intervals.

8. A one-way valve structure for plugging an enclosed cavity of an electrophoretic component according to claim 1, wherein, The bottom end of the receiving cavity (4) of the fixed seat (2) is provided with a load-bearing ring plate (22), and a second sealing gasket (23) is provided at the connection between the load-bearing ring plate (22) and the receiving tube (3).

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