Universal electromagnetic valve welding combination tool
By designing a universal solenoid valve welding combination tooling that integrates internal and external leakage detection and welding functions, the problem of multiple tooling replacements during the solenoid valve welding process was solved, production efficiency and product qualification rate were improved, and costs were reduced.
Patent Information
- Application Number
- CN202422353199.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-25
AI Technical Summary
During the existing solenoid valve welding process, the tooling needs to be replaced multiple times, which makes the operation cumbersome, reduces production efficiency and product qualification rate, and easily leads to internal and external leakage of the valve and unqualified products, increasing material consumption.
A universal solenoid valve welding assembly tool is designed, which integrates internal and external leakage detection modules and welding modules to reduce the number of tool changes. The valve body and valve seat can be positioned, welded and inspected through one set of tooling to avoid errors and deflections.
The operation steps are simplified, the production efficiency and product qualification rate are improved, and the work intensity and production costs are reduced.
Smart Images
Figure CN223301151U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solenoid valve welding tooling, in particular to a universal solenoid valve welding assembly tooling with the functions of welding positioning and internal and external leakage air tightness testing. Background Art
[0002] After the solenoid valve stroke is adjusted, the valve seat and coil assembly end faces need to be welded. Before welding, the valve internal leakage and response characteristics tests must be conducted to ensure compliance before welding can proceed, thereby improving the product qualification rate. Designing separate welding and testing fixtures requires replacing the welding fixture after testing, increasing assembly workload and reducing efficiency. This can also cause the plastic sealing surface and the valve seat mating surface to shift, ultimately resulting in internal and external leakage after welding and resulting in product failure. This combined internal and external leakage fixture design effectively addresses the issues of low assembly and testing efficiency, improves the product qualification rate after welding, accelerates production schedules, reduces production costs, and meets delivery quality and schedule requirements.
[0003] When de-energized, this series of solenoid valves uses spring force to seal the armature against the connector seat, ensuring the valve remains closed. When energized, the electromagnetic force overcomes the spring force, causing the armature to move upward, opening the valve and allowing the inlet medium to be discharged through the outlet. Because this series of solenoid valves has a welded structure, after adjusting the solenoid valve stroke, ensure that the valve's internal and external leakage and response time meet acceptable standards before welding. Otherwise, if the valve fails to perform after welding, it will be scrapped, resulting in a low product qualification rate and high material consumption.
[0004] The traditional tooling operation process is as follows: assemble and install the internal leakage tooling when detecting internal leakage before welding → assemble and remove the internal leakage tooling before welding → assemble and install the welding tooling during welding → assemble and remove the welding tooling after welding → assemble and install the internal leakage tooling to detect internal leakage → remove the internal leakage tooling → install the external leakage tooling for external leakage test, etc., and the operation is cumbersome when retesting the internal and external leakage performance after the subsequent environmental test. Multiple disassembly and positioning are required to complete the internal and external leakage test and welding operations, and the product production yield is low. Utility Model Content
[0005] In order to solve the above problems, an embodiment of the present invention provides a universal solenoid valve welding assembly tool that reduces the number of times the solenoid valve body is disassembled when completing welding positioning and internal and external leakage testing, simplifies the operating steps and at the same time improves operating efficiency and production yield.
[0006] In order to achieve the above-mentioned purpose, the embodiment of the present utility model specifically adopts the following technical solutions: a universal solenoid valve welding assembly tool, including an internal and external leakage detection module and a welding module, the internal and external leakage detection module includes a first joint and a second joint, the first joint and the second joint are connected by bolts, and a plug-in chamber for connecting the welding module is provided on the inner side of the first joint, the welding module includes a base plate and a positioning plate, the base plate and the positioning plate are connected by screws, a plug-in joint located in the plug-in chamber is provided on one side of the base plate, and a storage chamber for fixing the valve seat is provided on the side wall on the other side, and a welding positioning hole connected to the storage chamber is provided on the base plate.
[0007] As a further improvement of the above technical solution:
[0008] The lower surface of the first joint is provided with a sealing ring 1 which is in contact with the side wall of the substrate.
[0009] A sealing ring 2 located inside the welding positioning hole is provided on the inner wall of the substrate, a sealing ring 3 is provided on the inner wall of the storage chamber and is in contact with the side wall of the valve body, and a sealing ring 4 is provided on the side wall of the plug connector and is in contact with the inner wall of the plug chamber.
[0010] A sealing ring 5 is provided on the side wall of the second joint and is in contact with the bottom of the valve body.
[0011] A boss abutting against the bottom of the valve body is provided on the inner side wall of the second joint, and the sealing ring 5 is located on the upper surface of the boss.
[0012] The side wall of the second joint is provided with an avoidance groove located outside the boss.
[0013] The first joint, the second joint, the base plate and the positioning plate are all coaxially distributed with the valve body, and an airtightness test channel is provided in the middle.
[0014] The beneficial effects of the embodiments of the present utility model are as follows: 1. The universal solenoid valve welding assembly tooling includes an internal and external leakage detection module and a welding module. A set of tooling is sufficient for the welding positioning of the valve body and the valve seat and the internal and external leakage detection before and after welding. During operation, there is no need to use multiple sets of tooling in coordination, which reduces the error between different toolings and thus improves the yield rate of valve body production. At the same time, it also simplifies the operation steps and reduces the work intensity of the operators.
[0015] 2. The design of the base plate and positioning plate can fix the valve body and valve seat. The base plate is provided with welding positioning holes, which can be used to pre-weld the valve body and valve seat to avoid deflection of the valve body and valve seat during tooling disassembly, which helps to improve the yield rate of welding operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a cross-sectional view of the utility model;
[0018] Figure 3 This is a structural diagram of the internal and external leakage detection module in the present utility model;
[0019] Figure 4 This is a schematic structural diagram of the second joint in the present utility model;
[0020] Figure 5 It is a structural schematic diagram of the welding module in the present utility model.
[0021] In the figure: 1. First joint; 2. Second joint; 3. Bolt; 4. Plug-in chamber; 5. Base plate; 6. Positioning plate; 7. Plug-in joint; 8. Storage chamber; 9. Welding positioning hole; 10. Sealing ring 1; 11. Sealing ring 2; 12. Sealing ring 3; 13. Sealing ring 4; 14. Sealing ring 5; 15. Boss; 16. Avoidance groove; 17. Air tightness test channel. DETAILED DESCRIPTION
[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0023] like Figure 1-5 As shown, the universal solenoid valve welding assembly tooling of this embodiment includes an internal and external leakage detection module and a welding module. The internal and external leakage detection module includes a first joint 1 and a second joint 2, which are connected by bolts 3. The number of bolts 3 is at least two. The inner side of the first joint 1 is provided with a plug-in chamber 4 for connecting the welding module. The welding module includes a base plate 5 and a positioning plate 6. The base plate 5 and the positioning plate 6 are connected by screws. The valve body to be welded is fixed on the positioning plate 6, and the valve seat to be welded is fixed in the storage chamber 8. One side of the base plate 5 is provided with a plug-in joint 7 located in the plug-in chamber 4. The middle part of the plug-in joint 7 is provided with an air hole for gas to pass through during internal and external leakage testing. A storage chamber 8 for fixing the valve seat is provided on the side wall on the other side of the base plate 5. The base plate 5 is provided with a welding positioning hole 9 connected to the storage chamber 8. The welding positioning holes 9 are located above the connection between the valve seat and the valve body. There are multiple holes and they are evenly distributed along the circumferential direction of the base plate 5.
[0024] The lower surface of the first connector 1 is provided with a sealing ring 10 that fits with the side wall of the substrate 5, and the side wall of the plug connector 7 is provided with a sealing ring 4 13 that fits with the inner wall of the plug chamber 4. The function of the sealing ring 10 and the sealing ring 4 13 is to prevent gas leakage during internal and external leakage tests.
[0025] A sealing ring 2 11 located inside the welding positioning hole 9 is provided on the inner wall of the substrate 5, and a sealing ring 3 12 is provided on the inner wall of the storage chamber 8 to fit the side wall of the valve body. The function of the sealing ring 2 11 and the sealing ring 3 12 is to seal the weld during the internal and external leakage test before welding.
[0026] A sealing ring 5 14 is provided on the side wall of the second joint 2 and is in contact with the bottom of the valve body. The function of the sealing ring 5 14 is to provide sealing when the valve body and the second joint 2 are connected.
[0027] A boss 15 is provided on the inner wall of the second joint 2, which abuts against the bottom of the valve body. The sealing ring 14 is located on the upper surface of the boss 15. The function of the boss 15 is to fit against the bottom of the valve body so that the gas channel in the second joint 2 can be connected with the valve body, which is convenient for gas to pass through during internal and external leakage testing.
[0028] The side wall of the second joint 2 is provided with a relief groove 16 located outside the boss 15. The function of the relief groove 16 is to accommodate screws to ensure that the bottom of the valve body can abut against the surface of the boss 15, which is convenient for internal and external leakage testing.
[0029] The first connector 1 , the second connector 2 , the base plate 5 and the positioning plate 6 are all coaxially distributed with the valve body, and an airtightness test channel 17 is provided in the middle of each of them.
[0030] Working principle / assembly process of this solution: First, install the valve body and valve seat to be welded in the entire tooling, fix the valve seat in the storage chamber 8, and install the valve body on the positioning plate 6. Then, use screws to lock the positioning plate 6 and the base plate 5. Then, place the plug connector 7 in the plug-in chamber 4 to complete the connection between the base plate 5 and the first connector 1. Then, place the second connector 2 under the positioning plate 6 so that the boss can abut against the bottom of the valve body. Finally, use bolts to lock the first connector 1 and the second connector 2.
[0031] After the valve body and valve seat are installed, the valve body to be welded is tested for internal leakage before welding. The test gas is introduced from the second joint 2 so that the test gas passes through the airtightness test channel 17 and is discharged from the first joint 1. The end of the first joint 1 is connected to a helium mass spectrometer to detect the internal leakage rate and record the data;
[0032] Next, remove the first joint 1 and the second joint 2, and pre-weld the valve seat and the valve body through the welding positioning holes 9. Here, the number of welding positioning holes 9 is 8. After the pre-welding is completed, remove the base plate 5 and the positioning plate 6, and weld the valve body and the valve seat. After the welding is completed, remove the sealing ring 11, and install the valve body in the tooling after welding.
[0033] After pre-welding is completed, internal and external leakage detection is carried out. First, internal leakage detection is carried out in the same way as the detection method before welding. The second joint 2 is connected to the experimental system, and the valve is ventilated through the second joint 2. The first joint 1 is used to detect the internal leakage rate through the helium mass spectrometer. When retesting the valve leakage, there is no need to change the tooling. The second joint 2 is connected to the experimental system, and the valve is ventilated through the second joint 2. The first joint 1 is sealed, and the entire equipment is placed in the detection tank to detect the external leakage rate of the product.
[0034] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.
[0035] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0036] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, article, or apparatus / device.
[0037] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.
Claims
1. A universal solenoid valve welding assembly tool, characterized by: The invention comprises an internal and external leakage detection module and a welding module, wherein the internal and external leakage detection module comprises a first joint (1) and a second joint (2), wherein the first joint (1) and the second joint (2) are connected by a bolt (3), and an inserting chamber (4) for connecting the welding module is provided on the inner side of the first joint (1); The welding module comprises a base plate (5) and a positioning plate (6), wherein the base plate (5) and the positioning plate (6) are connected by screws, a plug connector (7) located in a plug-in chamber (4) is provided on one side of the base plate (5), and a storage chamber (8) for fixing a valve seat is provided on the side wall of the other side, and a welding positioning hole (9) communicating with the storage chamber (8) is provided on the base plate (5).
2. The universal solenoid valve welding assembly tool according to claim 1 is characterized in that: The lower surface of the first joint (1) is provided with a sealing ring (10) that fits the side wall of the base plate (5).
3. The universal solenoid valve welding assembly tool according to claim 1 is characterized in that: The inner wall of the base plate (5) is provided with a second sealing ring (11) located inside the welding positioning hole (9), the inner wall of the storage chamber (8) is provided with a third sealing ring (12) in contact with the side wall of the valve body, and the side wall of the plug connector (7) is provided with a fourth sealing ring (13) in contact with the inner wall of the plug chamber (4).
4. The universal solenoid valve welding assembly tool according to claim 1 is characterized in that: A sealing ring five (14) is provided on the side wall of the second joint (2) and is fitted with the bottom of the valve body.
5. The universal solenoid valve welding assembly tool according to claim 4, characterized in that: A boss (15) is provided on the inner side wall of the second joint (2) and is in contact with the bottom of the valve body, and the sealing ring (5) (14) is located on the upper surface of the boss (15).
6. The universal solenoid valve welding assembly tool according to claim 5, characterized in that: A relief groove (16) located outside the boss (15) is provided on the side wall of the second joint (2).
7. The universal solenoid valve welding assembly tool according to claim 1, characterized in that: The first connector (1), the second connector (2), the base plate (5) and the positioning plate (6) are all coaxially distributed with the valve body, and an airtightness test channel (17) is provided in the middle of each of them.