A kind of turnover welding tool for oil cylinder air port

Abstract

The application belongs to the technical field of welding equipment, and particularly relates to a turnover welding tool for a gas port of an oil cylinder, which comprises a base, a workbench fixedly installed on the top of the base, an oil cylinder body arranged above the workbench, a supporting assembly arranged between the oil cylinder body and the workbench, two through grooves respectively formed in the top of the base and the workbench, a fixing belt arranged between the inner walls of the through grooves, the fixing belt being overlapped on the top of the oil cylinder body, winding assemblies and counterweight assemblies respectively arranged at the two ends of the fixing belt, and a welding assembly arranged on the top of the base. When welding is performed, the oil cylinder body is placed above the supporting assembly and located on the inner side of the fixing belt, the winding assemblies are started to wind the fixing belt, and the oil cylinder body is fixed by the cooperation of the fixing belt and the counterweight assemblies. The reciprocating adjustment clamp is not needed, the operation is simple, the time for fixing the oil cylinder is saved, and the fixing efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, specifically a flip welding fixture for hydraulic cylinder ports. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation, and is widely used in various mechanical equipment, such as engineering machinery, machine tools, and automobiles. It is used to transmit thrust, tension, or rotational torque to drive the load to complete predetermined actions. In the production process of hydraulic cylinders, air port welding is one of the key processes, and its welding quality directly affects the sealing performance and service life of the hydraulic cylinder.

[0003] In the existing hydraulic cylinder port welding process, the hydraulic cylinder is usually positioned and supported by a fixture. After the welding of one hydraulic cylinder is completed, the fixture must be adjusted again to fix the cylinder for the next one. This means that in continuous production, the fixture adjustment work is frequent and repetitive, and a lot of time is consumed in non-welding processes. This disrupts the rhythm of the entire welding process and prolongs the production cycle. In the current pursuit of high efficiency and large-scale production, this inefficiency caused by repeated fixture adjustments seriously restricts the capacity improvement and economic benefits of hydraulic cylinder manufacturers and fails to meet the market's demand for rapid supply of hydraulic cylinder products.

[0004] Therefore, the present invention provides a flip welding fixture for hydraulic cylinder ports. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a flip welding fixture for hydraulic cylinder ports, including a base, a worktable fixedly installed on the top of the base, a hydraulic cylinder body arranged above the worktable, a support assembly arranged between the hydraulic cylinder body and the worktable, two through slots opened on the top of both the base and the worktable, a fixing strap arranged between the inner walls of the through slots, the fixing strap overlapping the top of the hydraulic cylinder body, a winding assembly and a counterweight assembly respectively arranged at both ends of the fixing strap, the surface of the fixing strap being arranged in multiple segments, each segment of the fixing strap having a different roughness, and a welding assembly arranged on the top of the base.

[0007] Preferably, the winding assembly includes a rotating seat located below the base. A drive shaft is rotatably mounted on the inner wall of the rotating seat. A winding roller is fixedly mounted on the outer wall of the drive shaft and located inside the rotating seat. A drive motor is fixedly mounted on one side of the rotating seat. The output end of the drive motor is fixedly connected to one end of the drive shaft. One end of the fixing belt is wound around the outer wall of the winding roller.

[0008] Preferably, the support assembly includes a support base, which is fixedly installed on the top of the workbench. A rotating shaft is symmetrically and rotatably installed on the inner wall of the support base, and rotating rollers are rotatably installed on the outer wall of each rotating shaft. The welding assembly includes a vision acquisition industrial camera.

[0009] Preferably, the counterweight assembly includes a counterweight block, which is fixedly installed on the end of the fixing belt away from the take-up roller, and a support plate is provided below the base, with the counterweight block overlapping the top of the support plate.

[0010] Preferably, the base has symmetrically fixed support legs at its bottom, a support plate is fixedly installed between the two support legs, a horizontal plate is fixedly installed between the support legs, and the rotating seat is fixedly installed on the top of the horizontal plate.

[0011] Preferably, limit posts are symmetrically fixedly installed between the top of the support plate and the bottom of the base, and limit blocks are symmetrically fixedly installed on the outer wall of the counterweight, with the inner wall of the limit block slidably connected to the outer wall of the limit post.

[0012] Preferably, connecting columns are symmetrically arranged above the workbench, and extrusion columns are rotatably installed on the outer walls of the connecting columns. The extrusion columns are kept in contact with the fixing belt, and an elastic expansion component is provided on the top of the base.

[0013] Preferably, the elastic expansion assembly includes positioning seats, four of which are fixedly installed on the top of the base. Each positioning seat has a receiving plate fixedly installed on its top. Each receiving plate has a positioning block fixedly installed on its outer wall. A torsion spring shaft is fixedly installed between the corresponding positioning block and the inner wall of the positioning seat. Each torsion spring shaft has an arc-shaped plate installed on its outer wall. Two arc-shaped plates are grouped together, and two connecting columns are rotatably installed between two groups of arc-shaped plates.

[0014] Preferably, the welding assembly further includes a rotating base, which is fixedly installed on the top of the base. A joint connector is fixedly installed on the top of the rotating base, and a welding torch is fixedly installed on the inner wall of the joint connector. The vision acquisition industrial camera is fixedly installed on one side of the welding torch.

[0015] Preferably, a control button is fixedly installed on the inner wall of the support plate, the control button abuts against the counterweight, and indicator lights are symmetrically fixedly installed on the top of the base. The indicator lights and the welding torch are both electrically connected to the control button.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The present invention provides a flipping welding fixture for hydraulic cylinder ports. During welding, the hydraulic cylinder body is placed above the support assembly and positioned inside the fixing band. The winding assembly is then activated to wind up the fixing band. The hydraulic cylinder body is fixed by the cooperation of the fixing band and the counterweight assembly. No reciprocating adjustment of the clamp is required, making the operation simple, saving time in fixing the hydraulic cylinder, and improving the fixing efficiency. Traditional clamps may leave scratches, indentations, or other damage on the surface of the hydraulic cylinder due to excessive clamping force or uneven contact, affecting the appearance quality and performance of the hydraulic cylinder. The fixing band is relatively soft and can better conform to the surface of the hydraulic cylinder during the fixing process. Furthermore, the counterweight assembly buffers the fixing force when it rises, effectively reducing damage to the surface of the hydraulic cylinder and ensuring the quality of the hydraulic cylinder.

[0018] 2. The present invention provides a rotating welding fixture for the cylinder air port. Because the rotating roller can rotate, it can reduce the friction between the roller and the cylinder body, providing conditions for the rotation of the cylinder body. Furthermore, because there is sufficient friction between the fixing belt and the cylinder body, after the welding work is completed at one position of the cylinder body, the drive motor continues to wind up the fixing belt to move it. When the fixing belt moves, it will drive the cylinder body to rotate, achieving an automatic rotation effect. This automatic rotation function eliminates the need for manual rotation of the cylinder, which not only improves work efficiency but also avoids the safety risks and positional deviation problems that may be caused by manual rotation.

[0019] 3. The present invention provides a flipping welding fixture for hydraulic cylinder ports. After welding is completed, the take-up roller releases the fixing belt, and the elastic expansion component unfolds under its own elastic force, thereby moving the extrusion column to the upper sides of the hydraulic cylinder body. When the extrusion column moves, it pushes the fixing belt located below the base to the top of the base, effectively preventing the fixing belt from becoming loose. The extrusion column supports the fixing belt when pushing it, thus keeping the fixing belt above the worktable in an open state, facilitating the removal and placement of the hydraulic cylinder body without the need for adjustment of the fixing belt, further improving work efficiency. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the base structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the base structure from another perspective of the present invention;

[0024] Figure 4 This is a schematic diagram of the fixing strap structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the workbench of the present invention;

[0026] Figure 6 This is a schematic diagram of the rotating seat structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the counterweight structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the cylinder body of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure at the extrusion column of the present invention;

[0030] Figure 10 This is a cross-sectional view of the counterweight structure of the present invention.

[0031] In the diagram: 1. Base; 2. Workbench; 3. Hydraulic cylinder body; 4. Through groove; 5. Fixing belt; 6. Rotating seat; 7. Drive shaft; 8. Winding roller; 9. Drive motor; 10. Support seat; 11. Rotating shaft; 12. Rotating roller; 13. Counterweight; 14. Support plate; 15. Support leg; 16. Horizontal plate; 17. Limiting post; 18. Limiting block; 19. Connecting post; 20. Extrusion post; 21. Positioning seat; 22. Receiving plate; 23. Positioning block; 24. Torsion spring shaft; 25. Arc plate; 26. Rotating base; 27. Joint connector; 28. Welding torch; 29. ​​Control button; 30. Indicator light. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] like Figures 1 to 5As shown in the embodiment of the present invention, a flip welding fixture for the air port of a hydraulic cylinder includes a base 1, a workbench 2 fixedly installed on the top of the base 1, a hydraulic cylinder body 3 arranged above the workbench 2, a support assembly arranged between the hydraulic cylinder body 3 and the workbench 2, two through slots 4 are opened on the top of both the base 1 and the workbench 2, a fixing strap 5 is arranged between the inner walls of the through slots 4, the fixing strap 5 overlaps the top of the hydraulic cylinder body 3, a winding assembly and a counterweight assembly are respectively arranged at both ends of the fixing strap 5, the surface of the fixing strap 5 is arranged in multiple segments, each segment of the fixing strap 5 has a different roughness, and a welding assembly is arranged on the top of the base 1.During welding, the cylinder body 3 to be welded is first placed above the support assembly and positioned inside the fixing belt 5. After the cylinder body 3 is in place, the winding assembly is activated. The winding assembly winds up the fixing belt 5. As the fixing belt 5 is wound up, its outer length gradually shortens, pulling up the counterweight assembly. The counterweight assembly converts its own weight into a fixing force on the cylinder body 3, thus securing the cylinder body 3. Welding can then be performed using the welding assembly. Traditional methods require reciprocating adjustment of the clamps to fix the cylinder, a cumbersome and time-consuming process. In this invention, during welding, the cylinder body 3 is placed above the support assembly and positioned inside the fixing belt 5. The winding assembly is then activated to wind up the fixing belt 5. The cylinder body 3 is secured using the cooperation of the fixing belt 5 and the counterweight assembly. This eliminates the need for reciprocating clamp adjustments, simplifying operation, saving time, and improving efficiency. Traditional clamps, when securing cylinders, may leave scratches, indentations, or other damage on the cylinder surface due to excessive clamping force or uneven contact, affecting the cylinder's appearance and performance. The fixing belt 5, being relatively flexible, better conforms to the cylinder surface during the securing process, and the counterweight assembly rises smoothly. The fixing band 5 acts as a buffer against the fixing force, effectively reducing damage to the cylinder surface and ensuring cylinder quality. Different cylinder materials have significantly different surface characteristics and roughness. The fixing band 5 is segmented, with each segment having a different roughness; the roughness is greater closer to the counterweight component. When welding cylinders of different materials, the fixing band 5 is wound up so that a segment of the band with a roughness suitable for the cylinder surface contacts the cylinder surface. For example, for a smooth metal cylinder, selecting a segment of the fixing band 5 with a relatively larger roughness significantly increases friction and prevents damage during welding. During the process, the hydraulic cylinder may slip or wobble due to insecure fixing. To ensure the stability of the fixation, some hydraulic cylinder surfaces may be fragile or require protection, such as those with precision coatings or polished surfaces. A section of fixing band 5 with a lower roughness can be selected to contact these cylinder surfaces. This ensures sufficient fixing force while minimizing wear and scratches on the cylinder surface, protecting the cylinder's appearance and performance. By using fixing bands 5 with varying roughness to contact the cylinder surface, a stable and controllable frictional force is provided, ensuring the smoothness and precision of the cylinder angle adjustment, allowing the welding position to accurately reach the predetermined point.

[0034] like Figure 2 , Figure 4 and Figure 6As shown, the winding assembly includes a rotating base 6 located below the base 1. A drive shaft 7 is rotatably mounted on the inner wall of the rotating base 6. A winding roller 8 is fixedly mounted on the outer wall of the drive shaft 7, located inside the rotating base 6. A drive motor 9 is fixedly mounted on one side of the rotating base 6. The output end of the drive motor 9 is fixedly connected to one end of the drive shaft 7. One end of the fixing belt 5 is wound around the outer wall of the winding roller 8. When the drive motor 9 is started, it drives the drive shaft 7 to rotate. When the drive shaft 7 rotates, it drives the winding roller 8 to rotate. By driving the winding roller 8 to rotate in different directions, the winding and unwinding of the fixing belt 5 can be achieved. The operator only needs to start or stop the drive motor 9 to easily control the state of the fixing belt 5, without the need for complicated manual winding or unwinding operations. This greatly simplifies the operation process, reduces the difficulty of operation, and improves work efficiency.

[0035] like Figure 5 As shown, the support assembly includes a support base 10, which is fixedly installed on the top of the workbench 2. A rotating shaft 11 is symmetrically mounted on the inner wall of the support base 10, and rotating rollers 12 are rotatably mounted on the outer wall of each rotating shaft 11. The welding assembly includes a vision acquisition industrial camera. The support base 10 positions the rotating rollers 12 via the rotating shafts 11. When placing the cylinder body 3 to be welded, the cylinder body 3 is placed above the two rotating rollers 12, which support the cylinder body 3, achieving initial positioning. Then, the cylinder body 3 is fixed using a fixing strap 5. Because the rotating rollers 12 can rotate, the friction between them and the cylinder body 3 is reduced, providing conditions for the rotation of the cylinder body 3. Furthermore, because the fixing strap 5 has sufficient friction with the cylinder body 3, once welding is completed at one position of the cylinder body 3, the drive motor 9 continues... The fixed belt 5 is then wound up and moved. As it moves, the fixed belt 5 causes the cylinder body 3 to rotate. The industrial camera can capture images of the cylinder's position in real time, obtaining its current angle and position information. By transmitting the captured images to the control system for analysis and processing, the actual state of the cylinder body 3 can be accurately determined, providing accurate data support for subsequent rotation control. Given the magnitude of the frictional force between the fixed belt 5 and the cylinder body 3, the control system can calculate the distance and direction that the fixed belt 5 needs to move based on the cylinder position information fed back by the industrial camera, thereby causing the cylinder to rotate at the corresponding angle. This precise control method ensures that the cylinder body 3 rotates at the correct angle each time, meeting the requirements of different welding processes for the welding position, improving welding accuracy and quality, and effectively avoiding human error.

[0036] like Figures 3 to 4 and Figure 7As shown, the counterweight assembly includes a counterweight block 13, which is fixedly installed on the end of the fixed belt 5 away from the take-up roller 8. A support plate 14 is provided below the base 1, and the counterweight block 13 overlaps the top of the support plate 14. The end of the fixed belt 5 away from the take-up roller 8 is connected to the counterweight block 13. Therefore, when the take-up roller 8 winds up the fixed belt 5, as the fixed belt 5 located outside the take-up roller 8 gradually shortens, the fixed belt 5 will pull the counterweight block 13 upward. The counterweight block 13 itself has a certain weight. During the process of the fixed belt 5 winding and pulling it upward, the weight of the counterweight block 13... The force will act continuously and stably on the fixing band 5, and then be converted into a fixing force on the cylinder body 3. This fixing force does not rely on external complex mechanical clamping devices, but is based on the stable factor of gravity. It can ensure that the cylinder body is always uniformly and stably fixed during the welding process, effectively preventing the cylinder from being displaced due to vibration or external force, thereby improving the welding accuracy and quality. In the initial state, the counterweight 13 overlaps above the support plate 14, and the support plate 14 provides a stopping position for the counterweight 13, thereby providing conditions for releasing the fixing of the cylinder body 3.

[0037] like Figures 1 to 3 As shown, support legs 15 are symmetrically fixedly installed on the bottom of the base 1, support plate 14 is fixedly installed between the two support legs 15, and a horizontal plate 16 is fixedly installed between the support legs 15. The rotating seat 6 is fixedly installed on the top of the horizontal plate 16. The support legs 15 support the base 1, ensuring the stability of the base 1 while keeping it at a suitable height for welding. The support plate 14 and the horizontal plate 16 are both connected to the support legs 15, thereby fixing their positions. The support plate 14 is used to support the counterweight 13, and the horizontal plate 16 is used to fix the rotating seat 6.

[0038] like Figure 7 As shown, limit posts 17 are symmetrically fixed between the top of the support plate 14 and the bottom of the base 1, and limit blocks 18 are symmetrically fixed on the outer wall of the counterweight 13. The inner wall of the limit block 18 is slidably connected to the outer wall of the limit post 17. When the counterweight 13 is raised or lowered, it will drive the limit block 18 to rise or fall along the limit post 17. The counterweight 13 is limited by the cooperation of the limit post 17 and the limit block 18, so that the counterweight 13 moves along the preset path. The gravity of the counterweight 13 always acts vertically downward on the fixed belt 5, and then is stably transmitted to the cylinder body 3, ensuring the stability of the movement of the counterweight 13 and preventing it from deviating.

[0039] like Figures 8 to 9As shown, connecting columns 19 are symmetrically arranged above the workbench 2. Each connecting column 19 has a rotatably mounted extrusion column 20 on its outer wall. The extrusion columns 20 are all in contact with the fixing belt 5. An elastic expansion assembly is provided on the top of the base 1. Initially, the top height of the extrusion column 20 is higher than the top height of the cylinder body 3, and the elastic expansion assembly is in an extended state. During the fixing process of the fixing belt 5 on the cylinder body 3, the fixing belt 5 will squeeze the extrusion column 20 to retract the elastic expansion assembly. When the fixing belt 5 completes the fixing of the hydraulic cylinder body 3, the extrusion column 20 is squeezed and moves to below the cylinder body 3. After the welding work is completed, the take-up roller 8 releases the fixing belt 5, and the elastic expansion component unfolds under its own elastic force, thereby moving the extrusion column 20 to the upper sides of the cylinder body 3. When the extrusion column 20 moves, it pushes the fixing belt 5 located below the base 1 to the top of the base 1, effectively preventing the fixing belt 5 from becoming loose. When the extrusion column 20 pushes the fixing belt 5, it supports the fixing belt 5, thereby keeping the fixing belt 5 located above the worktable 2 in an open state, which facilitates the removal and placement of the cylinder body 3 without the need to adjust the fixing belt 5, further improving work efficiency.

[0040] like Figures 1 to 2 and Figures 8 to 9 As shown, the elastic expansion assembly includes positioning seats 21, four of which are fixedly installed on the top of the base 1. Each positioning seat 21 has a receiving plate 22 fixedly installed on its top. Positioning blocks 23 are fixedly installed on the outer walls of each receiving plate 22. Torsion spring shafts 24 are fixedly installed between the corresponding positioning blocks 23 and the inner walls of the positioning seats 21. Arc-shaped plates 25 are installed on the outer walls of each torsion spring shaft 24. Two arc-shaped plates 25 form a group, and two connecting columns 19 are rotatably installed between the two groups of arc-shaped plates 25. During the process of fixing the cylinder body 3 with the fixing belt 5, the fixing belt 5 will squeeze the squeezing column 20, and the squeezing column 20 will be pulled by the connecting column 19. The movable arc plate 25 rotates around the torsion spring shaft 24. After the cylinder body 3 is fixed, the extrusion column 20 moves to the bottom of the cylinder body 3. When the welding work is finished and the take-up roller 8 releases the fixing belt 5, the arc plate 25 will rotate under the action of the reverse elastic force of the torsion spring shaft 24. When the arc plate 25 rotates, it will drive the extrusion column 20 to reset through the connecting column 19, thereby realizing the unfolding of the fixing belt 5. Compared with manually unfolding the fixing belt 5, this automatic unfolding method not only saves time and manpower, but also ensures that the fixing belt 5 is fully unfolded, making full preparation for the next fixing of the cylinder body 3, and improving the overall working efficiency of the tooling.

[0041] like Figure 1As shown, the welding assembly also includes a rotating base 26, which is fixedly installed on the top of the base 1. A joint connector 27 is fixedly installed on the top of the rotating base 26, and a welding torch 28 is fixedly installed on the inner wall of the joint connector 27. A vision acquisition industrial camera is fixedly installed on one side of the welding torch 28. The rotating base 26 provides basic rotational function for the welding torch 28, enabling the entire joint connector 27 and the welding torch 28 to rotate horizontally within a certain range. The joint connector 27 further enhances the flexibility of the welding torch 28. It is similar to a human joint, with multiple degrees of freedom of movement, providing conditions for precise welding of the cylinder air port. The vision acquisition industrial camera is fixed to the welding torch 28, so it can move with the welding torch 28 to better capture images.

[0042] like Figure 3 and Figure 10 As shown, a control button 29 is fixedly installed on the inner wall of the support plate 14. The control button 29 abuts against the counterweight 13. Indicator lights 30 are symmetrically fixedly installed on the top of the base 1. The indicator lights 30 and the welding torch 28 are electrically connected to the control button 29. After the welding work is completed, as the take-up roller 8 releases the fixing belt 5, the counterweight 13 will descend back above the support plate 14. When the counterweight 13 falls above the support plate 14, the control button 29 will be pressed. At this time, the indicator light 30 will light up to remind the operator to replace the cylinder body 3. The bright display of the indicator light 30 can clearly convey the working status information, ensuring that the operator can accurately grasp the work. When the control button 29 is pressed, the welding torch 28 will be de-energized, effectively preventing the welding torch 28 from starting welding due to accidental contact or other unexpected situations when the operator is performing operations such as replacing the cylinder body 3. This prevents safety accidents such as arc burns and high-temperature burns, and provides reliable protection for the personal safety of the operators. The cooperation between the control button 29 and the welding torch 28 also plays a role in preventing equipment misoperation. In the non-welding working state, that is, when the counterweight 13 presses the control button 29, the welding torch 28 cannot be powered on and works, ensuring that the equipment can only be started in a specific and safe working process, reducing equipment damage and safety accidents caused by misoperation.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flipping welding fixture for hydraulic cylinder ports, comprising a base (1), characterized in that: A workbench (2) is fixedly installed on the top of the base (1). A cylinder body (3) is arranged above the workbench (2). A support assembly is arranged between the cylinder body (3) and the workbench (2). Two through slots (4) are opened on the top of both the base (1) and the workbench (2). A fixing strap (5) is arranged between the inner walls of the through slots (4). The fixing strap (5) overlaps the top of the cylinder body (3). A winding assembly and a counterweight assembly are respectively arranged at both ends of the fixing strap (5). The surface of the fixing strap (5) is arranged in multiple segments. Each segment of the fixing strap (5) has a different roughness. A welding assembly is arranged on the top of the base (1). The workbench (2) is symmetrically provided with connecting columns (19) above it. Each connecting column (19) is rotatably mounted with an extrusion column (20). Each extrusion column (20) is in contact with the fixing belt (5). The top of the base (1) is provided with an elastic expansion component. The elastic expansion assembly includes a positioning seat (21), four of which are fixedly installed on the top of the base (1). A receiving plate (22) is fixedly installed on the top of each positioning seat (21). A positioning block (23) is fixedly installed on the outer wall of each receiving plate (22). A torsion spring shaft (24) is fixedly installed between the corresponding positioning block (23) and the inner wall of the positioning seat (21). An arc plate (25) is installed on the outer wall of each torsion spring shaft (24). Two arc plates (25) are arranged in a group. Two connecting columns (19) are rotatably installed between the two groups of arc plates (25).

2. The flipping welding fixture for hydraulic cylinder ports according to claim 1, characterized in that: The winding assembly includes a rotating seat (6) located below the base (1). A drive shaft (7) is rotatably mounted on the inner wall of the rotating seat (6). A winding roller (8) is fixedly mounted on the outer wall of the drive shaft (7) and located on the inner side of the rotating seat (6). A drive motor (9) is fixedly mounted on one side of the rotating seat (6). The output end of the drive motor (9) is fixedly connected to one end of the drive shaft (7). One end of the fixing belt (5) is wound around the outer wall of the winding roller (8).

3. The flipping welding fixture for hydraulic cylinder ports according to claim 2, characterized in that: The support assembly includes a support base (10), which is fixedly installed on the top of the workbench (2). A rotating shaft (11) is symmetrically and rotatably installed on the inner wall of the support base (10), and a rotating roller (12) is rotatably installed on the outer wall of the rotating shaft (11). The welding assembly includes a vision acquisition industrial camera.

4. The flipping welding fixture for hydraulic cylinder ports according to claim 3, characterized in that: The counterweight assembly includes a counterweight block (13), which is fixedly installed at the end of the fixing belt (5) away from the winding roller (8). A support plate (14) is provided below the base (1), and the counterweight block (13) overlaps the top of the support plate (14).

5. A flipping welding fixture for hydraulic cylinder ports according to claim 4, characterized in that: The base (1) has symmetrically fixed support legs (15) at its bottom, the support plate (14) is fixedly installed between the two support legs (15), the support legs (15) are fixedly installed between the support legs (15), and the rotating seat (6) is fixedly installed on the top of the horizontal plate (16).

6. The flipping welding fixture for hydraulic cylinder ports according to claim 4, characterized in that: Limiting posts (17) are symmetrically fixed between the top of the support plate (14) and the bottom of the base (1), and limiting blocks (18) are symmetrically fixed on the outer wall of the counterweight (13). The inner wall of the limiting block (18) is slidably connected to the outer wall of the limiting post (17).

7. A flipping welding fixture for hydraulic cylinder ports according to claim 4, characterized in that: The welding assembly also includes a rotating base (26), which is fixedly installed on the top of the base (1). A joint connector (27) is fixedly installed on the top of the rotating base (26). A welding torch (28) is fixedly installed on the inner wall of the joint connector (27). The vision acquisition industrial camera is fixedly installed on one side of the welding torch (28).

8. A flipping welding fixture for hydraulic cylinder ports according to claim 7, characterized in that: A control button (29) is fixedly installed on the inner wall of the support plate (14). The control button (29) abuts against the counterweight (13). An indicator light (30) is symmetrically fixedly installed on the top of the base (1). The indicator light (30) and the welding torch (28) are both electrically connected to the control button (29).

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