A diaphragm valve joint welding tool

Abstract

The utility model discloses a diaphragm valve joint welding frock, including setting's welding station, install first protective cover on the welding station, first protective cover inside is provided with first mounting ring, the limit slot is seted up in first mounting ring inside, the limit slot inside is provided with valve body interface, install the limit board on the welding station, be provided with second protective cover on the welding station, second protective cover inside installs second mounting ring, second mounting ring inside is provided with the joint of adapting with valve body interface. This diaphragm valve joint welding frock, the valve body interface of diaphragm valve is embedded in the limit slot of first mounting ring inside, and the limit slot realizes the radial positioning of valve body interface, effectively avoids the radial deviation of valve body interface in the welding process, guarantees the subsequent butt joint accuracy, reduces the problem of workpiece damage caused by setting the problem of setting the pressure bar limit, and the limit board can assist the welding position of joint and valve body interface, improve the stability of overall welding operation.

Description

Technical Field

[0001] This utility model relates to the technical field of diaphragm valve production, specifically a welding fixture for diaphragm valve connectors. Background Technology

[0002] In industries such as semiconductor manufacturing, photovoltaics, chemicals, medical, and food, the use of high-purity and ultra-high-purity gases is crucial, and gas flow control typically requires high-purity valves to achieve precise pipeline shut-off. Since the connectors at both ends of diaphragm valves need to be customized according to customer requirements, welding becomes a critical step in the manufacturing process. However, existing welding operations rely on manual labor, which can easily loosen the weld joints, affecting weld quality and leading to inconsistent weld results.

[0003] To overcome the aforementioned deficiencies, existing technology (Chinese Patent No. CN214685008U, Publication Date: November 12, 2021) provides a welding head welding fixture, comprising a fixture body, a pressure bar, and a pressure plate. The fixture body is provided with a receiving cavity, a limiting groove, and a channel. The welding head is placed in the receiving cavity so that the outer shell of the welding head is locked in the limiting groove. The pressure bar presses down on the outer shell of the welding head, and the top of the welding head extends into the channel and is limited. The entire welding head is firmly fixed by the welding fixture and will not loosen, facilitating the worker to find the welding angle and perform welding. Simultaneously, the channel also protects the top of the welding head from damage during the welding process.

[0004] Although existing technology uses pressure bars and plates to hold the outer shell of the welding head in place, the pressure bars and plates are prone to generating large frictional forces during operation, which can damage the surface of the welding head. Furthermore, the lack of an effective positioning device can cause deviations in the welding axis, resulting in substandard welding quality and reduced work efficiency.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing diaphragm valve connector welding fixture. Therefore, we proposed a diaphragm valve connector welding fixture that can effectively solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a welding fixture for diaphragm valve connectors to solve the problems mentioned in the background art. Currently, the welding head shell is pressed down by pressure strips and pressure plates, but during operation, the pressure strips and pressure plates are prone to generating large friction forces, which can damage the surface of the welding head. In addition, the device lacks an effective positioning device, which may cause deviation of the welding axis, resulting in substandard welding quality and reduced work efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a welding fixture for a diaphragm valve connector, comprising a welding table, a first protective cover mounted on the welding table, a first mounting ring disposed inside the first protective cover, a limiting hole formed on the first mounting ring, a welding needle connected inside the limiting hole by a limiting bolt, a limiting groove formed inside the first mounting ring, a valve body interface disposed inside the limiting groove, a limiting plate mounted on the welding table, a second protective cover mounted on the welding table, a second mounting ring mounted inside the second protective cover, and a connector adapted to the valve body interface disposed inside the second mounting ring.

[0008] Preferably, a movable component is provided at the bottom of the second protective cover, the movable component includes a movable block installed at the bottom of the second protective cover, a slider is installed at the bottom of the movable block, and a support plate is installed inside the welding station.

[0009] Preferably, the upper surface of the support plate is provided with a sliding groove, which is adapted to the slider, and a telescopic cylinder is installed inside the welding table, with the end of the telescopic cylinder connected to the side of the moving block.

[0010] Preferably, a heat dissipation assembly is installed inside the welding station. The heat dissipation assembly includes a motor installed inside the welding station. The output end of the motor is connected to a cooling fan via a rotating shaft. Heat dissipation holes are provided on the upper surface of the welding station.

[0011] Preferably, the welding station is provided with a conveying assembly, which includes a conveying cylinder installed inside the welding station. The output end of the conveying cylinder is connected to a first pipe, which extends through to the outside of the welding station.

[0012] Preferably, a piston is connected through the inside of the conveying cylinder, and a second pipe is connected to the input end of the conveying cylinder. The second pipe has a suction groove and is located at the bottom of the heat dissipation hole.

[0013] Preferably, the rotating shaft is connected to a rotating shaft via a bevel gear structure, and a snap-fit ​​seat is connected to the end of the rotating shaft.

[0014] Preferably, a docking assembly is installed on the side end of the movable block. The docking assembly includes a rotating rod installed on the side end of the movable block. A snap-fit ​​block is connected to the end of the rotating rod. The snap-fit ​​block is adapted to a snap-fit ​​groove opened on the side end of the snap-fit ​​seat. A cam is installed on the outside of the rotating rod. The cam is located on the piston side end. A spring is sleeved on the outside of the piston.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This diaphragm valve connector welding fixture embeds the valve body interface of the diaphragm valve into the limiting groove inside the first mounting ring. The limiting groove achieves radial positioning of the valve body interface, effectively preventing radial displacement of the valve body interface during welding, ensuring subsequent docking accuracy, and reducing the problem of workpiece damage caused by setting pressure strips for limiting. The limiting plate can also help limit the welding position of the connector and the valve body interface, improving the overall stability of the welding operation. The specific details are as follows:

[0016] (1) The limiting groove of the first mounting ring matches the outer wall of the valve body interface, which can accurately limit the radial displacement of the valve body interface and ensure that it is aligned with the axis of the welding needle. The second mounting ring fixes the joint with the help of the inner wall limiting structure, ensuring that the joint and the valve body interface are coaxial. The dual positioning can effectively avoid the problem of radial displacement of the valve body interface and loosening and displacement of the joint, and improve the consistency and reliability of the weld.

[0017] (2) The protective cover can block the splashing of high temperature welding slag during welding, which can not only prevent the parts from being damaged by high temperature and significantly extend the overall service life of the tooling, but also isolate the high temperature welding slag from the operator, creating a safe operating environment for the operator.

[0018] (3) After the welding needle is placed into the limiting hole of the first installation ring, the limiting bolt can be tightened to quickly lock the welding needle. The installation and disassembly are convenient, which makes it easy to replace welding needles of different specifications in the future. This reduces the preparation time before welding, reduces the probability of rework after welding, and improves the overall welding operation efficiency.

[0019] (4) The telescopic cylinder drives the moving block to move horizontally. The slider at the bottom of the moving block is embedded in the slide groove of the support plate to provide precise guidance for the movement, thereby achieving a tight fit between the joint and the valve body interface end face, reducing the generation of air holes during welding, and improving the weld sealing and structural strength.

[0020] (5) The motor drives the cooling fan to cool the welding area through the heat dissipation holes and collects the smoke and dust through the second pipe suction slot, reducing the spread of smoke and dust, improving the working environment, reducing the pollution of tooling parts by smoke and dust, and delaying the motor to stop after welding to reduce power consumption and reduce power costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the first mounting ring structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the disassembled structure of the interface between the first mounting ring and the valve body of this utility model;

[0024] Figure 4This is a schematic diagram of the connection structure between the second mounting ring and the connector of this utility model;

[0025] Figure 5 This is a schematic diagram of the internal structure of the welding station of this utility model;

[0026] Figure 6 This is a cross-sectional structural diagram of the welding station of this utility model;

[0027] Figure 7 This is a cross-sectional structural diagram of the conveyor cylinder of this utility model.

[0028] In the diagram: 1. Welding table; 2. First protective cover; 3. First mounting ring; 4. Limiting hole; 5. Limiting bolt; 6. Welding needle; 7. Limiting groove; 8. Valve body interface; 9. Limiting plate; 10. Second protective cover; 11. Second mounting ring; 12. Connector; 13. Telescopic cylinder; 14. Moving block; 15. Sliding block; 16. Support plate; 17. Slide groove; 18. Motor; 19. Rotating shaft; 20. Cooling fan; 21. Cooling hole; 22. Conveying cylinder; 23. First pipe; 24. Piston; 25. Second pipe; 26. Bevel gear structure; 27. Snap-fit ​​seat; 28. Rotating rod; 29. ​​Snap-fit ​​block; 30. Cam; 31. Spring. Detailed Implementation

[0029] 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.

[0030] Example 1: In this example, the drive checks whether the welding pin 6 rotates concentrically and confirms its distance from the weld joint, avoiding defects such as weld misalignment and insufficient penetration during welding, thus reducing the rework rate. Figures 1-4The technical solution shown includes a welding table 1, a first protective cover 2 mounted on the welding table 1, a first mounting ring 3 inside the first protective cover 2, a limiting hole 4 on the first mounting ring 3, a welding needle 6 connected inside the limiting hole 4 by a limiting bolt 5, a limiting groove 7 inside the first mounting ring 3, a valve body interface 8 inside the limiting groove 7, a limiting plate 9 mounted on the welding table 1, and a second protective cover 10 mounted on the welding table 1. A second mounting ring 11 is mounted inside the second protective cover 10, and a connector 12 adapted to the valve body interface 8 is provided inside the second mounting ring 11. The valve body interface 8 of the diaphragm valve is embedded into the limiting groove 7 inside the first mounting ring 3. The shape of the limiting groove 7 matches the outer wall of the valve body interface 8, achieving radial positioning of the valve body interface 8, effectively preventing radial displacement of the valve body interface 8 during welding, ensuring subsequent docking accuracy, and ensuring that the axis of the valve body interface 8 and the welding needle 6 are aligned, reducing welding defects caused by axis deviation. The connector 12 to be docked is placed into the second mounting ring 11. The second mounting ring 11 is fixed to the second protective cover 10. The second mounting ring 11 fixes the joint 12 through the inner wall limiting structure to prevent the joint 12 from loosening or shifting during movement and welding, avoid uneven butt gap, improve welding quality stability, and reduce the problem of workpiece damage caused by setting pressure strip limiting. The first protective cover 2 and the second protective cover 10 respectively cover the areas of the first mounting ring 3 and the second mounting ring 11, protecting the operator from burns by high temperature welding slag, improving the service life of the tooling and the safety of operation. The welding needle 6 to be welded is placed into the limiting hole 4 of the first mounting ring 3, and the limiting bolt 5 is tightened to realize the rapid locking of the welding needle 6. The welding needle 6 is quickly adjusted, and the rotation of the welding needle 6 is checked to see if it is concentric and to confirm the distance from the weld joint, so as to avoid defects such as weld deviation and insufficient penetration during welding, reduce the rework rate. The welding table 1 provides stable support for the entire tooling, and the limiting plate 9 can help limit the welding position of the joint 12 and the valve body interface 8, further limiting the spatial position of the butt area and improving the overall welding operation stability.

[0031] Example 2: In this example, the telescopic cylinder 13 pushes the moving block 14 connected to its end to move horizontally. The overall moving speed is uniform and controllable, avoiding the problem of uneven force in manual operation. Specifically, as follows... Figure 1 , Figure 5 and Figure 6As shown, a movable assembly is provided at the bottom of the second protective cover 10. The movable assembly includes a movable block 14 installed at the bottom of the second protective cover 10, and a slider 15 installed at the bottom of the movable block 14. A support plate 16 is installed inside the welding table 1. A groove 17 is formed on the upper surface of the support plate 16, which is adapted to the slider 15. A telescopic cylinder 13 is installed inside the welding table 1. The end of the telescopic cylinder 13 is connected to the side of the movable block 14. Controlling the telescopic cylinder 13 inside the welding table 1 to ventilate pushes the movable block 14 connected to its end. Moving horizontally, the overall movement speed is uniform and controllable, avoiding the problem of uneven force in manual operation. Furthermore, the slider 15 at the bottom of the moving block 14 is embedded in the groove 17 on the upper surface of the support plate 16. The slider 15 makes the movement of the moving block 14 more stable, ensuring that the connector 12 and the valve body interface 8 are smoothly connected along the axial direction. The moving block 14 drives the second protective cover 10 and the internal structure to move synchronously until the connector 12 and the end face of the valve body interface 8 are tightly fitted. The connection gap meets the welding requirements, reduces the generation of welding porosity, and improves the sealing performance and strength of the weld.

[0032] Example 3: In this example, the air inside the conveying cylinder 22 is pushed to the outside of the welding table 1 through the first pipe 23. The first pipe 23 is connected to an external fume treatment device to achieve directional conveying of welding fumes, prevent the fumes from spreading in the work area, and improve the working environment for operators. Specifically, as follows... Figure 1 and Figures 5-7As shown, a heat dissipation assembly is installed inside the welding station 1. The heat dissipation assembly includes a motor 18 installed inside the welding station 1. The output end of the motor 18 is connected to a cooling fan 20 via a rotating shaft 19. A heat dissipation hole 21 is provided on the upper surface of the welding station 1. A conveying assembly is provided inside the welding station 1. The conveying assembly includes a conveying cylinder 22 installed inside the welding station 1. The output end of the conveying cylinder 22 is connected to a first pipe 23, which extends through to the outside of the welding station 1. A piston 24 is connected through the inside of the conveying cylinder 22. The input end of the conveying cylinder 22 is connected to a second pipe 25, which has a suction groove. The second pipe 25 is located at the bottom of the heat dissipation hole 21. A rotating shaft is connected to the rotating shaft 19 via a bevel gear structure 26. The rotating shaft is connected to a locking seat 27, and a docking assembly is installed on the side of the moving block 14. The docking assembly includes a rotating rod 28 installed on the side of the moving block 14, and a locking block 29 is connected to the end of the rotating rod 28. The locking block 29 is adapted to the locking groove opened on the side of the locking seat 27. A cam 30 is installed on the outside of the rotating rod 28. The cam 30 is located on the side of the piston 24, and a spring 31 is sleeved on the outside of the piston 24. After docking is completed, the welding operation is started. During the welding process, the motor 18 inside the welding table 1 is started. The output end of the motor 18 drives the cooling fan 20 to rotate at high speed through the rotating shaft 19, generating airflow. The airflow generated by the cooling fan 20 passes upward through the heat dissipation holes 21 on the upper surface of the welding table 1 and directly acts on the welding area. This system quickly dissipates the high-temperature heat generated during welding, preventing workpiece deformation due to overheating and preventing tooling components from aging due to long-term high temperatures, thus extending the overall service life of the tooling. The rotating shaft 19 of the motor 18 drives the rotating shaft to rotate via the bevel gear structure 26. The locking seat 27 at the end of the rotating shaft rotates, and at this time, the locking block 29 at the end of the rotating rod 28 is embedded in the locking groove of the locking seat 27. The locking seat 27 drives the rotating rod 28 to rotate synchronously. The locking structure achieves rapid power transmission without the need for additional drive components, reducing equipment costs and maintenance difficulty. The cam 30 fixed on the outside of the rotating rod 28 rotates with the rotating rod 28. The eccentric structure of the cam 30 periodically squeezes the piston inside the conveying cylinder 22 during rotation. 24. The air inside the conveying cylinder 22 is pushed to the outside of the welding table 1 through the first pipe 23. The first pipe 23 is connected to the external fume treatment equipment to realize the directional conveying of welding fumes, avoid the spread of fumes in the work area, and improve the working environment of the operators. The piston 24 moves outward under the action of the return force of the outer spring 31, and a negative pressure is formed inside the conveying cylinder 22. The fumes in the welding area are sucked in through the suction groove of the second pipe 25 located at the bottom of the heat dissipation hole 21, reducing the pollution of tooling components by fumes. After welding is completed, each component is reset in the following order, and the motor 18 stops with a delay to reduce ineffective energy consumption and reduce electricity costs. The contents not described in detail in this specification are the prior art known to those skilled in the art.

[0033] Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A welding fixture for a diaphragm valve connector, comprising a welding table (1), characterized in that, The welding table (1) is equipped with a first protective cover (2), and a first mounting ring (3) is provided inside the first protective cover (2). A limiting hole (4) is opened on the first mounting ring (3). A welding needle (6) is connected inside the limiting hole (4) by a limiting bolt (5). A limiting groove (7) is opened inside the first mounting ring (3). A valve body interface (8) is provided inside the limiting groove (7). A limiting plate (9) is installed on the welding table (1). A second protective cover (10) is provided on the welding table (1). A second mounting ring (11) is installed inside the second protective cover (10). A connector (12) that is compatible with the valve body interface (8) is provided inside the second mounting ring (11).

2. The diaphragm valve connector welding fixture according to claim 1, characterized in that: The second protective cover (10) is provided with a moving component at the bottom. The moving component includes a moving block (14) installed at the bottom of the second protective cover (10). A slider (15) is installed at the bottom of the moving block (14). A support plate (16) is installed inside the welding table (1).

3. The diaphragm valve connector welding fixture according to claim 2, characterized in that: The upper surface of the support plate (16) is provided with a sliding groove (17), which is adapted to the slider (15). The welding table (1) is equipped with a telescopic cylinder (13), and the end of the telescopic cylinder (13) is connected to the side of the moving block (14).

4. The diaphragm valve connector welding fixture according to claim 1, characterized in that: The welding table (1) is equipped with a heat dissipation assembly, which includes a motor (18) installed inside the welding table (1). The output end of the motor (18) is connected to a cooling fan (20) via a rotating shaft (19). The upper surface of the welding table (1) is provided with heat dissipation holes (21).

5. The diaphragm valve connector welding fixture according to claim 3, characterized in that: The welding table (1) is equipped with a conveying assembly, which includes a conveying cylinder (22) installed inside the welding table (1). The output end of the conveying cylinder (22) is connected to a first pipe (23), which extends through to the outside of the welding table (1).

6. The diaphragm valve connector welding fixture according to claim 5, characterized in that: A piston (24) is connected through the inside of the conveying cylinder (22). A second pipe (25) is connected to the input end of the conveying cylinder (22). A suction groove is opened on the second pipe (25). The second pipe (25) is located at the bottom of the heat dissipation hole (21).

7. The diaphragm valve connector welding fixture according to claim 4, characterized in that: The rotating shaft (19) is connected to a rotating shaft via a bevel gear structure (26), and a snap-fit ​​seat (27) is connected to the end of the rotating shaft.

8. The diaphragm valve connector welding fixture according to claim 3, characterized in that: A docking assembly is installed on the side of the movable block (14). The docking assembly includes a rotating rod (28) installed on the side of the movable block (14). A snap-fit ​​block (29) is connected to the end of the rotating rod (28). The snap-fit ​​block (29) is adapted to the snap-fit ​​groove opened on the side of the snap-fit ​​seat (27). A cam (30) is installed on the outside of the rotating rod (28). The cam (30) is located on the side of the piston (24). A spring (31) is sleeved on the outside of the piston (24).

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