Fluid valve assembly welding tool

Abstract

The invention relates to the technical field of welding tools, and discloses a fluid valve assembly welding tool which comprises a mounting bottom plate, a set of supporting plates are arranged on the mounting bottom plate, a rotating shaft is arranged on one supporting plate, a rotating air cylinder is arranged on one side of the supporting plate, and a connecting shaft is arranged on the supporting plate. Wherein one connecting shaft is connected with one end of a rotating air cylinder, a supporting frame is arranged at one end of the connecting shaft, a shell is arranged on the supporting frame, and a pre-tightening assembly is arranged on the supporting frame. The pre-tightening assembly is used for pre-tightening the fluid valve assembly before welding. Compared with the prior art, the workpiece can be precisely pre-pressed before welding, the positioning precision and the welding seam consistency are remarkably improved, manual errors are avoided, meanwhile, the pre-pressing action is automatically locked through the air cylinder after manual operation is completed, the safety of an operator is effectively guaranteed, the whole tool is matched with the automatic welding technology, the welding efficiency is improved, and the labor intensity of workers is lowered. The method is suitable for batch production and application.

Description

Technical Field

[0001] The present invention relates to the technical field of welding tooling, in particular to a welding tooling for a fluid valve assembly. Background Art

[0002] Fluid valve assemblies are widely used in fields such as petrochemicals, automation, and energy transportation. They typically consist of multiple components, including a valve body, valve core, and end caps. These components must be welded to achieve a hermetic connection to ensure stable flow of media under high pressure or high temperature. In actual production, high-quality welds and precise positioning are often required at the sealing points between the valve body and valve core, as well as at the end caps. Furthermore, the workpieces must be spatially stable before welding to avoid weld defects caused by assembly deviations.

[0003] Existing welding fixtures are mostly rigid structures, making them difficult to adapt to fluid valve assemblies of varying specifications or with significant structural variations. Some fixtures also feature simple preload mechanisms, lacking flexible adjustment during the clamping process and posing a risk of damage to the workpiece. Furthermore, the preload, clamping, and pre-weld positioning processes are complex and require complex procedures, while the pneumatic control lacks integration, hindering their integration with automated welding systems. Therefore, this application discloses a fluid valve assembly welding fixture to address the need for improved welding quality and production efficiency. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a fluid valve assembly welding tool, which has the advantages of realizing a fast, efficient and stable welding process. It solves the problems of cumbersome operating steps and lack of integration of pneumatic control during pre-tightening, clamping and positioning before welding, which is not conducive to the coordinated use of automated welding systems.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fluid valve assembly welding tool, comprising a mounting base plate, a group of support plates arranged on the mounting base plate, one of the support plates being provided with a rotating shaft, a rotating cylinder being provided on one side of the support plate, a connecting shaft being provided on the support plate, one of the connecting shafts being connected to one end of the rotating cylinder, a supporting frame being provided at one end of the connecting shaft, a shell being provided on the supporting frame, and a pre-tightening assembly being provided on the supporting frame; the pre-tightening assembly is used to pre-tighten the fluid valve assembly before welding.

[0006] Preferably, the pre-tightening assembly includes a first driving cylinder and a second driving cylinder arranged at both ends of the support frame, a movable plate is provided at the output end of the first driving cylinder, a first deflection arm is rotatably provided on the top of the movable plate, a second deflection arm is provided at one end of the first deflection arm, one end of the second deflection arm is rotatably provided at the top of the support frame, and a push rod is provided on the second deflection arm.

[0007] Preferably, the pre-tightening assembly also includes a group of guide rods arranged on one side of the movable plate, the guide rods are telescopic structures, a fixed plate is provided at one end of the guide rods, a telescopic spring is sleeved on the guide rods, one end of the telescopic spring is arranged on one side of the movable plate, and the other end of the telescopic spring is arranged on one side of the fixed plate.

[0008] Preferably, the surface of the fixing plate is made of rubber, and the fixing plate is arranged in a C shape.

[0009] Preferably, multiple groups of mounting plates are provided on the support frame, and a deflation button, a locking button and a release button are provided on the mounting plates in sequence. A connecting pipe is provided between the deflation button, the locking button and the release button, and one end of the connecting pipe is connected with the first driving cylinder and the second driving cylinder. A main air intake pipe is provided on the support plate, and the connecting pipe is connected with the main air intake pipe. Multiple groups of pneumatic valves are provided on one side of the support frame, and the pneumatic valves are connected with the connecting pipe. The connecting pipe forms a complete passage on the support frame.

[0010] Preferably, the deflection angle of the second deflection arm is from positive 60 degrees to negative 30 degrees.

[0011] Preferably, a moving rod is provided on the output end of the second driving cylinder, a contact plate is provided on the support frame, a guide tube is provided at one end of the contact plate, a telescopic rod is slidably provided in the guide tube, one end of the telescopic rod is connected to the moving rod, and the contact plate and the moving plate are symmetrically arranged.

[0012] Preferably, a first fluid valve tube is provided in the movable plate, a second fluid valve tube is inserted into the first fluid valve tube, a welding seam is provided at the contact gap between the first fluid valve tube and the second fluid valve tube, and a positioning hole is opened on one side of the bottom of the first fluid valve tube.

[0013] Preferably, the telescopic rod can be in contact with the positioning hole.

[0014] Preferably, the deflation button, the locking button and the release button are provided with protective plates, and the protective plates are provided on the housing.

[0015] Compared with the prior art, the present invention provides a fluid valve assembly welding tool, which has the following beneficial effects: 1. The fluid valve assembly welding tool realizes adjustable installation of the support frame by arranging a support plate, a rotating shaft, a rotating cylinder and a connecting shaft on the installation base plate, and effectively positions and presses the fluid valve assembly before welding through the shell and pre-tightening assembly arranged on the support frame. During operation, the operator positions the fluid valve assembly and applies preliminary pre-tightening force to ensure that the fluid valve assembly is centered; the workpiece is firmly clamped by extending the clamping drive cylinder to provide a stable clamping environment for welding; finally, the robot completes the girth welding and sealing operation of the valve body and the valve core; the cooperation of the rotating cylinder and the connecting shaft can realize flexible adjustment of the welding angle to meet the welding requirements of fluid valves of different specifications. The support frame and the pre-tightening assembly work together to accurately pre-press the workpiece before welding, significantly improving the positioning accuracy and weld consistency and avoiding manual errors. At the same time, the pre-pressing action is automatically locked by the cylinder after manual completion, effectively ensuring the safety of the operator. The entire tool is adapted to the automatic welding process, improves welding efficiency, and is suitable for mass production applications.

[0016] 2. The fluid valve assembly welding tooling realizes synchronous cooperation through the first drive cylinder and the second drive cylinder provided at both ends of the support frame. First, by pressing the release button, the first drive cylinder and the second drive cylinder are simultaneously deflated and retracted, thereby facilitating the removal or placement of the welded or unwelded fluid valve assembly. Then, the first fluid valve tube is placed into the contact plate. At this time, pressing the deflation button can enable the second drive cylinder to take in air, and push the movable rod to drive the telescopic rod to slide in the guide tube, thereby making the telescopic rod contact with the positioning hole on the first fluid valve tube, thereby completing the preliminary positioning of the first fluid valve tube. At the same time, when the first fluid valve tube is placed, the push rod is manually pushed, causing the second deflection arm to deflect, which can also drive the first deflection arm to deflect. At this time, the movable plate can be driven to approach the contact plate. Through the guide rod and fixed plate provided on one side of the movable plate, the guide rod drives the C-shaped fixed plate to fit closely with the surface of the workpiece under the elastic action of the telescopic spring, playing a role of buffering and covering positioning.

[0017] 3. The fluid valve assembly welding tooling, when the human hands are out of the motion range of the fluid valve workpiece positioning mechanism, pressing the locking button at this time can make the first drive cylinder start to take in air, and the output end of the first drive cylinder can push the movable plate to keep it close to the contact plate. At this time, the fluid valve assembly can be welded along the welding seam by the robot, which effectively improves the centering accuracy of the welding position. The pre-pressing and clamping actions are performed in steps to ensure safe operation and reliable positioning of the workpiece. The tooling is used in conjunction with the robot automatic welding system to achieve a fast, efficient and stable welding process, which is particularly suitable for the automated welding scenarios of batch fluid valve assemblies.

[0018] 4. The fluid valve assembly welding fixture is provided with multiple groups of mounting plates on the support frame, and the mounting plates are sequentially installed with a deflation button, a locking button and a release button. The three are interconnected through a connecting pipe and are connected to the first drive cylinder and the second drive cylinder to form a complete pneumatic control circuit. The connecting pipe is also connected to the main air inlet pipe provided on the support plate to provide a unified air source for the system. By the operator operating the buttons in sequence, multi-step pneumatic actions such as pre-compression, clamping and release can be achieved. Pneumatic valves are provided on both sides of the mounting plate to adjust the passage state and improve the control accuracy. To prevent misoperation, the deflation button, the locking button and the release button are all A protective plate is provided, which is fixedly mounted on the outer shell; after the fluid valve assembly is installed in place, the first driving cylinder drives the movable plate, in which the first fluid valve tube is provided, and the second fluid valve tube is inserted inside the movable plate, and the two cooperate to form a welding seam, and a positioning hole is provided on one side of the bottom of the first fluid valve tube to achieve precise docking with the telescopic rod. Through this overall matching structure, the key parts of the fluid valve assembly are firmly clamped and prepared for sealing welding; the welding efficiency and consistency of the finished product are improved, the overall device has a compact layout and high functional integration, which is convenient for batch operation and is conducive to improving the standardization and automation level of the welding process of the fluid valve assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention from a second viewing angle; Figure 3 This is a schematic diagram of the three-dimensional structure of the support frame of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the pneumatic valve of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the second deflection arm in the first deflection state of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the second deflection arm of the present invention in the second deflection state; Figure 7 This is a schematic diagram of the three-dimensional structure of the movable plate of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the second driving cylinder of the present invention; Figure 9 For the present invention Figure 7 A in the middle is an enlarged structural diagram; Figure 10 This is a schematic diagram of the three-dimensional structure of the first fluid valve tube of the present invention.

[0020] In the figure: 1. Mounting base plate; 2. Support plate; 3. Rotating shaft; 4. Rotating cylinder; 5. Connecting shaft; 6. Support frame; 7. Casing; 8. Protective plate; 9. Mounting plate; 10. Deflation button; 11. Locking button; 12. Release button; 13. Connecting pipe; 14. Main air intake pipe; 15. First driving cylinder; 16. Second driving cylinder; 17. Moving plate; 18. First deflection arm; 19. Second deflection arm; 20. Push rod; 21. Moving rod; 22. Contact plate; 23. Guide pipe; 24. Telescopic rod; 25. Guide rod; 26. Fixed plate; 27. Telescopic spring; 28. Second fluid valve pipe; 29. Welding seam; 30. Positioning hole; 31. Pneumatic valve; 32. First fluid valve pipe. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] As introduced in the background technology, there are deficiencies in the existing technology. In order to solve the above technical problems, this application proposes a fluid valve assembly welding tool.

[0023] In a typical embodiment of the present application, Figures 1-10 As shown, a fluid valve assembly welding tool includes a mounting base 1, a group of support plates 2 are provided on the mounting base 1, a rotating shaft 3 is provided on one of the support plates 2, a rotating cylinder 4 is provided on one side of the support plate 2, a connecting shaft 5 is provided on the support plate 2, one of the connecting shafts 5 is connected to one end of the rotating cylinder 4, a supporting frame 6 is provided at one end of the connecting shaft 5, a shell 7 is provided on the supporting frame 6, and a pre-tightening assembly is provided on the supporting frame 6; the pre-tightening assembly is used to pre-tighten the fluid valve assembly before welding; By arranging a support plate 2, a rotating shaft 3, a rotating cylinder 4 and a connecting shaft 5 on the mounting base 1, an adjustable installation of the support frame 6 is achieved, and the shell 7 and the pre-tightening assembly arranged on the support frame 6 are used to effectively position and tighten the fluid valve assembly before welding. During operation, the operator positions the fluid valve assembly and applies a preliminary pre-tightening force to ensure that the fluid valve assembly is centered; the workpiece is firmly clamped by extending the clamping drive cylinder to provide a stable clamping environment for welding; finally, the robot completes the girth welding and sealing welding operation of the valve body and the valve core; through the cooperation of the rotating cylinder 4 and the connecting shaft 5, the welding angle can be flexibly adjusted to meet the welding requirements of fluid valves of different specifications. The support frame 6 and the pre-tightening assembly work together to accurately pre-press the workpiece before welding, significantly improving the positioning accuracy and weld consistency and avoiding manual errors. At the same time, the pre-stressing action is automatically locked by the cylinder after manual completion, effectively ensuring the safety of the operator. The entire tooling is adapted to the automatic welding process, improving welding efficiency, and is suitable for mass production applications.

[0024] As a preferred implementation in this embodiment, refer to the attached Figures 1-10 The pre-tightening assembly includes a first driving cylinder 15 and a second driving cylinder 16 arranged at both ends of the support frame 6. The output end of the first driving cylinder 15 is provided with a movable plate 17. The top of the movable plate 17 is rotatably provided with a first deflection arm 18. One end of the first deflection arm 18 is provided with a second deflection arm 19. The deflection angle of the second deflection arm 19 is from positive 60 degrees to negative 30 degrees; one end of the second deflection arm 19 is provided at the top of the support frame 6, and a push rod 20 is provided on the second deflection arm 19; the pre-tightening assembly also includes a group of guide rods 25 arranged on one side of the movable plate 17. The guide rods 25 are a telescopic structure, and one end of the guide rods 25 is provided with a fixed A telescopic spring 27 is sleeved on the fixed plate 26 and the guide rod 25. One end of the telescopic spring 27 is arranged on one side of the movable plate 17, and the other end of the telescopic spring 27 is arranged on one side of the fixed plate 26. The surface of the fixed plate 26 is made of rubber, and the fixed plate 26 is arranged in a C shape. A movable rod 21 is arranged on the output end of the second driving cylinder 16, and a contact plate 22 is provided on the supporting frame 6. A guide tube 23 is provided at one end of the contact plate 22. A telescopic rod 24 is slidably provided in the guide tube 23. One end of the telescopic rod 24 is connected to the movable rod 21. The contact plate 22 and the movable plate 17 are symmetrically arranged. The telescopic rod 24 can contact the positioning hole 30. The first driving cylinder 15 and the second driving cylinder 16 provided at both ends of the support frame 6 achieve synchronous cooperation. First, by pressing the release button 12, the first driving cylinder 15 and the second driving cylinder 16 are simultaneously deflated and retracted, thereby facilitating the removal or placement of the welded or unwelded fluid valve assembly. Then, the first fluid valve tube 32 is placed into the contact plate 22. At this time, pressing the deflation button 10 enables the second driving cylinder 16 to take in air, and pushes the moving rod 21 to drive the telescopic rod 24 to slide in the guide tube 23, thereby causing the telescopic rod 24 to contact the positioning hole 30 on the first fluid valve tube 32, thereby completing the preliminary positioning of the first fluid valve tube 32. At the same time, when the first fluid valve tube 32 is placed, the push rod 20 is manually pushed, so that the second deflection arm 19 is deflected, and the first deflection arm 18 is deflected at the same time. At this time, the movable plate 17 is driven to approach the contact plate 22. Through the guide rod 25 and the fixed plate 26 provided on one side of the movable plate 17, the guide rod 25 drives the C-shaped fixed plate 26 to fit closely with the surface of the workpiece under the elastic action of the telescopic spring 27, playing the role of buffering and covering positioning; When the human hand has withdrawn from the motion range of the fluid valve workpiece positioning mechanism, pressing the locking button 11 can enable the first drive cylinder 15 to start to take in air. At this time, the output end of the first drive cylinder 15 can push the movable plate 17 to keep it close to the contact plate 22. At this time, the fluid valve assembly can be welded along the welding seam 29 by the robot, which effectively improves the centering accuracy of the welding position. The pre-pressing and clamping actions are performed in steps to ensure safe operation and reliable workpiece positioning. The tooling is used in conjunction with the robot automatic welding system to achieve a fast, efficient and stable welding process, which is particularly suitable for the automated welding scenario of batch fluid valve assemblies.

[0025] As a preferred implementation in this embodiment, refer to the attached Figures 1-8 , multiple groups of mounting plates 9 are provided on the support frame 6, and a deflation button 10, a locking button 11 and a release button 12 are provided on the mounting plate 9 in sequence, and a connecting pipe 13 is provided between the deflation button 10, the locking button 11 and the release button 12, and one end of the connecting pipe 13 is connected to the first driving cylinder 15 and the second driving cylinder 16, and a main air intake pipe 14 is provided on the support plate 2, and the connecting pipe 13 is connected to the main air intake pipe 14, and multiple groups of pneumatic valves 31 are provided on one side of the support frame 6, and the pneumatic valve 3 1 is connected to the connecting pipe 13, and the connecting pipe 13 forms a complete passage on the support frame 6; the deflation button 10, the locking button 11, and the release button 12 are provided with a protective plate 8, and the protective plate 8 is provided on the housing 7; a first fluid valve pipe 32 is provided in the movable plate 17, and a second fluid valve pipe 28 is inserted into the first fluid valve pipe 32. A welding seam 29 is provided at the contact gap between the first fluid valve pipe 32 and the second fluid valve pipe 28. A positioning hole 30 is provided on one side of the bottom of the first fluid valve pipe 32; The support frame 6 is provided with multiple groups of mounting plates 9, on which the deflation button 10, the locking button 11 and the release button 12 are sequentially mounted. The three are interconnected through a connecting pipe 13 and are connected to the first drive cylinder 15 and the second drive cylinder 16 to form a complete pneumatic control circuit. The connecting pipe 13 is also connected to the main air intake pipe 14 provided on the support plate 2 to provide a unified air source for the system. By the operator operating the buttons in sequence, multi-step pneumatic actions such as pre-pressing, clamping and releasing can be achieved. Pneumatic valves 31 are provided on both sides of the mounting plate 9 to adjust the passage state and improve the control accuracy. In order to prevent misoperation, the deflation button 10, the locking button 11 and the release button 12 are all set There is a protective plate 8, which is fixedly mounted on the outer shell 7; after the fluid valve assembly is installed in place, the first driving cylinder 15 drives the movable plate 17, and a first fluid valve tube 32 is arranged in the movable plate 17, and a second fluid valve tube 28 is inserted inside the movable plate 17, and the two cooperate to form a welding seam 29, and a positioning hole 30 is arranged on one side of the bottom of the first fluid valve tube 32 to achieve precise docking with the telescopic rod 24. Through this overall matching structure, the key parts of the fluid valve assembly are firmly clamped and sealed for welding preparation; the welding efficiency and consistency of the finished product are improved, the overall device has a compact layout and high functional integration, which is convenient for batch operation and is conducive to improving the standardization and automation level of the welding process of the fluid valve assembly.

[0026] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fluid valve assembly welding tool, comprising a mounting base plate (1), characterized in that: A group of support plates (2) are provided on the mounting base plate (1), wherein a rotating shaft (3) is provided on one of the support plates (2), a rotating cylinder (4) is provided on one side of the support plate (2), a connecting shaft (5) is provided on the support plate (2), wherein one of the connecting shafts (5) is connected to one end of the rotating cylinder (4), a supporting frame (6) is provided at one end of the connecting shaft (5), a shell (7) is provided on the supporting frame (6), and a pre-tightening assembly is provided on the supporting frame (6); the pre-tightening assembly is used for pre-tightening the fluid valve assembly before welding.

2. A fluid valve assembly welding tool according to claim 1, characterized in that: The pre-tightening assembly comprises a first driving cylinder (15) and a second driving cylinder (16) arranged at both ends of the support frame (6); a movable plate (17) is provided at the output end of the first driving cylinder (15); a first deflection arm (18) is rotatably provided at the top of the movable plate (17); a second deflection arm (19) is provided at one end of the first deflection arm (18); one end of the second deflection arm (19) is rotatably provided at the top of the support frame (6); and a push rod (20) is provided on the second deflection arm (19).

3. The fluid valve assembly welding tool according to claim 2, characterized in that: The pre-tightening assembly further comprises a group of guide rods (25) arranged on one side of the movable plate (17), wherein the guide rods (25) are of a telescopic structure, one end of the guide rods (25) is provided with a fixed plate (26), and a telescopic spring (27) is sleeved on the guide rods (25), one end of the telescopic spring (27) is provided on one side of the movable plate (17), and the other end of the telescopic spring (27) is provided on one side of the fixed plate (26).

4. The fluid valve assembly welding tool according to claim 3, characterized in that: The surface of the fixing plate (26) is made of rubber, and the fixing plate (26) is arranged in a C-shape.

5. The fluid valve assembly welding tool according to claim 4, characterized in that: The support frame (6) is provided with multiple groups of mounting plates (9), and the mounting plates (9) are sequentially provided with a deflation button (10), a locking button (11) and a release button (12). A connecting pipe (13) is provided between the deflation button (10), the locking button (11) and the release button (12), and one end of the connecting pipe (13) is connected to the first driving cylinder (15) and the second driving cylinder (16). A main air intake pipe (14) is provided on the support plate (2), and the connecting pipe (13) is connected to the main air intake pipe (14). One side of the support frame (6) is provided with multiple groups of pneumatic valves (31), and the pneumatic valves (31) are connected to the connecting pipe (13). The connecting pipe (13) forms a complete passage on the support frame (6).

6. The fluid valve assembly welding tool according to claim 5, characterized in that: The deflection angle of the second deflection arm (19) is from positive 60 degrees to negative 30 degrees.

7. The fluid valve assembly welding tool according to claim 6, characterized in that: A moving rod (21) is provided on the output end of the second driving cylinder (16), a contact plate (22) is provided on the supporting frame (6), a guide tube (23) is provided at one end of the contact plate (22), a telescopic rod (24) is slidably provided in the guide tube (23), one end of the telescopic rod (24) is connected to the moving rod (21), and the contact plate (22) and the moving plate (17) are symmetrically arranged.

8. The fluid valve assembly welding tool according to claim 7, characterized in that: A first fluid valve tube (32) is provided in the movable plate (17), a second fluid valve tube (28) is inserted into the first fluid valve tube (32), a welding seam (29) is provided at a contact gap between the first fluid valve tube (32) and the second fluid valve tube (28), and a positioning hole (30) is provided on one side of the bottom of the first fluid valve tube (32).

9. The fluid valve assembly welding tool according to claim 8, characterized in that: The telescopic rod (24) can be in contact with the positioning hole (30).

10. The fluid valve assembly welding tool according to claim 5, characterized in that: The deflation button (10), the locking button (11) and the release button (12) are provided with a protective plate (8), and the protective plate (8) is provided on the housing (7).

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