A welding device for circumferential seams of metal support rings

Abstract

This invention discloses a circumferential welding device for a metal support ring, relating to the field of welding positioning fixture technology. It includes a base and clamping components. The clamping components are symmetrically arranged on the base, each including clamping rods. Six sets of clamping rods, each consisting of two rods, are symmetrically arranged on the base. In use, this invention can simultaneously clamp both the inner and outer sides of the material, thus avoiding damage caused by clamping only one side. It also positions the material and provides support while clamping, preventing deformation under stress. During welding, the position of the welding head can be changed simultaneously with the material's position, preventing collision between the welding head and the device. The welding position can also be positioned. Furthermore, during welding, the support structure can cool the weld area, preventing instability and wave deformation of the metal ring due to heat accumulation.

Description

Technical Field

[0001] This invention relates to the field of welding positioning fixture technology, specifically to a circumferential welding device for a metal support ring. Background Technology

[0002] Metal support rings are common structural connectors, typically consisting of two thin metal rings and multiple supports (or spokes) welded between them. They are widely used in automotive parts, aerospace structural components, pipe supports, and filtration equipment. The structural characteristics of this type of workpiece are: the metal rings have thin walls and low rigidity, while the structural stiffness abruptly changes at the intermediate supports, making it a typical weakly rigid, discontinuous, variable-stiffness assembly. During welding, the metal rings and supports must be precisely connected to each other through circumferential seams or segmented circumferential seams.

[0003] Currently, welding of such ring-shaped workpieces often employs external clamping chucks or internal support tightening mechanisms, applying clamping force only from one side of the workpiece (outer circle or inner hole). For thin-walled metal rings, external clamping on one side can easily cause the ring to be squeezed into an ellipse, resulting in out-of-roundness errors due to elastic recovery after release. Internal support on one side may cause localized plastic deformation due to concentrated clamping force, and it is also difficult to provide effective support for the central support area. During welding, the workpiece is prone to unstable wave deformation or axial warping due to thermal stress. Summary of the Invention

[0004] The purpose of this invention is to provide a circumferential welding device for a metal support ring to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a circumferential welding device for a metal support ring, comprising a base and a clamping assembly. The clamping assembly is symmetrically arranged on the base, and the clamping assembly includes clamping rods. Six sets of clamping rods are symmetrically arranged on the base, and each set consists of two clamping rods. An oil inlet channel is provided on one side of each clamping rod, and an oil return channel is provided on the other side. A stop block is connected to the top of one clamping rod in each set, and an insert plate is provided in the middle of the clamping rod. A top block is provided on the upper part of the other clamping rod in each set, and an insert block is provided at the top of the clamping rod. Guide blocks are symmetrically arranged on both sides of the insert block, and an oil cavity is provided inside the insert plate and the insert block. Slots are provided on both sides of the insert plate and the lower side of the insert block. A compression spring is connected inside the oil cavity, and a pressure block is connected to one end of the compression spring.

[0006] Furthermore, the side of the abutment block and the top block away from the clamping rod are both arc surfaces, and the pressure block is slidably connected to the clamping rod through the oil cavity. The pressure block passes through the slot to the side wall of the insert plate and the insert block, and the pressure block is elastically connected to the oil cavity through the compression spring.

[0007] Furthermore, a cooling groove is provided inside the pressure block, and a conductive sheet is provided at the end of the pressure block away from the compression spring. One end of the cooling groove is connected to the oil chamber, and the other end of the cooling groove is offset from the oil return channel. A one-way valve is provided inside the cooling groove.

[0008] Furthermore, a rotating groove is provided in the center of the machine base, and a turntable is provided inside the rotating groove. A toothed ring is provided at the lower edge of the turntable, and a drive gear is provided on one side of the toothed ring. A rotating motor is provided on one side of the drive gear.

[0009] Furthermore, the surface of the turntable is symmetrically provided with sliding grooves, and a slider is engaged in the sliding groove. The slider is provided with an oil passage groove, and an oil passage sleeve is connected to one side of the oil passage groove. There are a total of six sets of sliding grooves, and each set has two sliding grooves. The slider is slidably connected to the machine base through the sliding groove, and the slider is connected to the clamping rod. The oil passage groove is connected to the oil inlet channel and the oil return channel respectively.

[0010] Furthermore, the turntable is provided with an oil storage chamber, and a stopper plate is provided in the oil storage chamber. The turntable is provided with a transfer compartment in the center of one side of the oil storage chamber, and an oil passage chamber is provided on the edge of one side of the oil storage chamber. The transfer compartment and the oil passage chamber are connected to the oil inlet channel through an oil passage sleeve and an oil passage groove on one side of the slider, and a pressure valve is provided in the oil passage groove.

[0011] Furthermore, the transfer compartment is equipped with an oil extraction pipe, the oil passage is equipped with an oil return pipe, one end of the oil extraction pipe is connected to a circulation pump, and an oil outlet pipe is provided on one side of the circulation pump. The oil extraction pipe and the oil return pipe are both connected to the oil return channel through an oil passage sleeve and an oil passage groove on the other side of the slider, and the oil return pipe is connected to the oil extraction pipe.

[0012] Furthermore, a lead screw is connected to one side of the plug plate, and a threaded sleeve is provided on the outside of the lead screw. A transmission wheel is provided on one side of the threaded sleeve, and a drive wheel is provided on one side of the transmission wheel. A throttle is connected to one side of the drive wheel via a shaft, and the shaft between the drive wheel and the throttle is rotatably connected to the turntable. The threaded sleeve is threadedly connected to the lead screw, and the threaded sleeve is rotatably connected to the turntable.

[0013] Furthermore, a bracket is connected to the middle of one side of the base, and a moving mechanism is provided inside the bracket. A lifting rod is connected below the moving mechanism, and a base plate is connected below the lifting rod. A buffer spring is connected below the base plate, and a pressure plate is connected to one end of the buffer spring. Limiting rods are symmetrically connected to one side of the pressure plate, and a guide rod is connected to the center of the other side of the buffer spring. Welding heads are symmetrically connected to the other side of the pressure plate.

[0014] Furthermore, the limiting rod is slidably connected to the base plate, and the pressure plate is elastically connected to the base plate through a buffer spring. A roller is provided at the lower end of the guide rod.

[0015] This invention provides a circumferential welding device for a metal support ring, which has the following advantages: During use, it can simultaneously clamp the material from both the inner and outer sides, thus avoiding damage caused by clamping only one side. It also positions the material and supports it while clamping, preventing deformation under stress. During welding, the position of the welding head can be changed while adjusting the material position, preventing collision between the welding head and the device. It also positions the welding position. Furthermore, during welding, the support structure can cool the weld area, preventing the metal ring from becoming unstable and deformed due to heat accumulation.

[0016] 1. In use, after the lower metal support frame and the upper metal ring are stacked on the turntable, the internal oil is pressurized to drive the clamping rods and other parts to simultaneously clamp the metal ring and metal support frame "from the inside out" and "from the outside in". During the clamping process, the positioning of the metal ring and metal support frame is completed, preventing misalignment at the connection point and ensuring welding accuracy. Simultaneously, a controllable balanced clamping force is applied from both the inside and outside sides, preventing material damage caused by clamping only one side when the material is thin. When the block moves, the slide can work with the oil sleeve to restrict the slider and prevent it from deflecting during movement. After the material is positioned and clamped, the built-in pressure block can be ejected by hydraulic pressure to provide support for the metal ring and to assist in fixing the support frame. This prevents the support frame or the metal ring from deforming in the middle when it is under force on the inside and outside at the same time. This not only ensures the accurate alignment of the weld, but also actively suppresses the axial warping or middle bulging deformation that may occur in the workpiece under the action of welding thermal stress. It is suitable for high-precision clamping of complex structures with variable stiffness composed of thin-walled rings and internal supports.

[0017] 2. In this invention, when the pressure block applies force to the metal ring, the conductive sheet contacts the metal ring and is energized, facilitating welding at the connection point. At this time, the cooling tank and the return oil channel coincide, allowing the oil chamber to connect with the return oil channel through the cooling tank. When the circulation pump starts, the oil can circulate through the pressure block, clamping rod, and slider in the oil chamber, cooling tank, and oil storage chamber. This allows the conductive sheet to quickly conduct the large amount of heat generated during welding to the pressure block. The flowing hydraulic oil acts as a cooling medium, carrying away and dissipating the heat, actively preventing the accumulation of heat in the local area of ​​the thin-walled metal ring. This effectively prevents unstable wave deformation caused by thermal expansion. The conductive sheet also serves as the contact point of the welding circuit, ensuring stable conduction of the welding current and improving the cooling efficiency of the material. This, in turn, improves the welding quality and appearance of the thin-walled part. After processing, turning the handle in the opposite direction can draw the oil in the oil chamber back to the oil storage chamber, thereby gradually releasing the support and clamping of the material. The one-way valve in the cooling tank can prevent the oil in the return oil channel from being drawn out.

[0018] 3. In this invention, the moving mechanism drives the lifting rod to move above the metal ring while the circulating pump is starting. The lifting rod then lowers the base plate to perform the welding operation. By combining the guide rod with a buffer spring and using a pre-set guide block on the workpiece fixture as a contour track, the workpiece rotation is converted into regular axial micro-movements of the welding head. As the workpiece rotates with the turntable, the guide rod slides along the contour of the guide block, driving the welding head to automatically retreat and avoid protruding structures such as internal supports of the workpiece. After overcoming the obstacle, it automatically returns to the welding position under the action of the buffer spring. This avoids damage to the welding head from collisions with the device and also prevents over-welding. It relies entirely on the geometric constraints of the mechanical structure and the potential energy of the spring, requiring no sensors, PLC programming, or servo motor control. It can precisely synchronize with the workpiece rotation speed to complete the "welding-avoidance-reset" cycle, eliminating the risk of damage from collisions between the welding head and the internal structure of the workpiece, ensuring the continuity of discontinuous circumferential seam welding, and improving the operational stability and welding accuracy of the equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional cross-sectional view of the clamping rod portion of a metal support ring circumferential welding device according to the present invention. Figure 2 This is a cross-sectional perspective view of the circumferential welded equipment for a metal support ring according to the present invention. Figure 3 This invention relates to a circumferential welding device for a metal support ring. Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the overall three-dimensional structure of a metal support ring circumferential welding device according to the present invention; Figure 5 This is a three-dimensional exploded cross-sectional view of the base of a metal support ring circumferential welding device according to the present invention. Figure 6 This is a three-dimensional exploded cross-sectional view of the turntable of a metal support ring circumferential welding device according to the present invention.

[0020] In the diagram: 1. Base; 2. Clamping assembly; 201. Clamping rod; 202. Oil inlet channel; 203. Oil return channel; 204. Abutment block; 205. Insert plate; 206. Top block; 207. Insert block; 208. Guide block; 209. Oil chamber; 210. Slot; 211. Compression spring; 212. Pressure block; 3. Cooling tank; 4. Conductive sheet; 5. Rotary groove; 6. Turntable; 7. Gear ring; 8. Drive gear; 9. Rotary motor; 10. Slide groove; 11. Slider; 12. 13. Oil passage tank; 14. Oil passage sleeve; 15. Oil storage chamber; 16. Plug plate; 17. Transfer compartment; 18. Oil passage tank; 19. Oil suction pipe; 20. Oil return pipe; 21. Circulation pump; 22. Oil outlet pipe; 23. Lead screw; 24. Threaded sleeve; 25. Transmission wheel; 26. Drive wheel; 27. Throttle; 28. Bracket; 29. ​​Moving mechanism; 30. Lifting rod; 31. Base plate; 32. Buffer spring; 33. Pressure plate; 34. Limiting rod; 35. Guide rod; 36. Welding head. Detailed Implementation

[0021] Please see Figures 1 to 6 The present invention provides a technical solution: a circumferential welding device for a metal support ring, comprising a base 1 and a clamping assembly 2. The clamping assembly 2 is symmetrically arranged on the base 1. The clamping assembly 2 includes clamping rods 201. Six sets of clamping rods 201 are symmetrically arranged on the base 1, and each set of clamping rods 201 consists of two rods. An oil inlet channel 202 is provided on one side of the clamping rod 201, and an oil return channel 203 is provided on the other side of the clamping rod 201. A stop block 204 is connected to the top of one of the clamping rods in each set of clamping rods. A plate 205 is provided in the middle of the rod 201. A top block 206 is provided on the upper part of another rod in each set of clamping rods 201. A block 207 is provided on the top of the clamping rod 201. Guide blocks 208 are symmetrically arranged on both sides of the block 207. An oil cavity 209 is provided in both the plate 205 and the block 207. Slots 210 are provided on both sides of the plate 205 and the lower side of the block 207. A compression spring 211 is connected in the oil cavity 209. A pressure block 212 is connected to one end of the compression spring 211.

[0022] Please see Figures 1 to 4 The sides of the abutment block 204 and the top block 206 away from the clamping rod 201 are both arc surfaces, and the pressure block 212 is slidably connected to the clamping rod 201 through the oil cavity 209. The pressure block 212 passes through the side wall of the insert plate 205 and the insert block 207 through the slot 210, and the pressure block 212 is elastically connected to the oil cavity 209 through the compression spring 211. A cooling groove 3 is provided in the pressure block 212, and a conductive sheet 4 is provided at the end of the pressure block 212 away from the compression spring 211. One end of the cooling groove 3 is connected to the oil cavity 209, and the other end of the cooling groove 3 is misaligned with the return oil channel 203. A one-way valve is provided in the cooling groove 3. The specific operation is as follows: During use, after stacking the lower metal support frame and the upper metal ring on the turntable 6, turn the handle 26 to make the drive wheel 25 drive the threaded sleeve 23 to rotate on the turntable 6 through the transmission wheel 24. This causes the lead screw 22 to drive the plug plate 15 to rise in the oil storage chamber 14, pushing the oil in the oil storage chamber 14 into the transfer chamber 16 and the oil passage chamber 17. This, in turn, pushes the slider 11 to move in the slide groove 10, causing the inner and outer ring clamping rods 201 to expand outward or contract inward on the turntable 6, respectively, to position and clamp the support frame. At the same time, the clamping rods 201 on both sides can be moved through the abutment block 204 and the top block 20 6. Position and clamp the metal ring. When the slider 11 moves, the slide groove 10 can cooperate with the oil passage sleeve 13 to restrict the slider 11 and prevent the slider 11 from deflecting during the movement. After the material positioning and clamping is completed, continue to turn the handle 26. The oil pressure in the oil storage chamber 14 increases and the pressure valve in the oil passage groove 12 opens. The oil can then enter the oil inlet channel 202 from the oil passage sleeve 13 through the oil passage groove 12. This causes the oil in the oil chamber 209 to push the pressure block 212 to move, applying force to the upper and lower sides of the metal ring and the upper side of the support frame, providing support for the metal ring and assisting in fixing the support frame.

[0023] Please see Figures 2 to 6A rotating groove 5 is provided in the center of the base 1, and a turntable 6 is provided inside the rotating groove 5. A gear ring 7 is provided on the lower edge of the turntable 6, and a drive gear 8 is provided on one side of the gear ring 7. A rotating motor 9 is provided on one side of the drive gear 8. The surface of the turntable 6 is symmetrically provided with sliding grooves 10, and a slider 11 is engaged and connected in the sliding grooves 10. An oil passage groove 12 is provided in the slider 11, and an oil passage sleeve 13 is connected to one side of the oil passage groove 12. There are a total of six sets of sliding grooves 10, and each set of sliding grooves 10 has two sliding grooves. The slider 11 is slidably connected to the base 1 through the sliding grooves 10, and the slider 11 is connected to the clamping rod 201. The oil passage grooves 12 are respectively connected to the oil inlet channel 2. 02. The return oil channel 203 is connected. An oil storage chamber 14 is provided inside the turntable 6, and a stopper plate 15 is provided inside the oil storage chamber 14. A transfer chamber 16 is provided in the center of one side of the oil storage chamber 14 on the turntable 6, and an oil passage chamber 17 is provided on the edge of one side of the oil storage chamber 14 on the turntable 6. The transfer chamber 16 and the oil passage chamber 17 are connected to the oil inlet channel 202 through the oil passage sleeve 13 and the oil passage groove 12 on one side of the slider 11. A pressure valve is provided in the oil passage groove 12. An oil suction pipe 18 is provided inside the transfer chamber 16, and an oil return pipe 19 is provided inside the oil passage chamber 17. One end of the oil suction pipe 18 is connected to a circulation pump 20, and an oil outlet is provided on one side of the circulation pump 20. Pipe 21, oil extraction pipe 18, and oil return pipe 19 are all connected to the oil return channel 203 through the oil passage sleeve 13 and the oil passage groove 12 on the other side of the slider 11. The oil return pipe 19 is also connected to the oil extraction pipe 18. A lead screw 22 is connected to one side of the plug plate 15, and a threaded sleeve 23 is provided on the outside of the lead screw 22. A transmission wheel 24 is provided on one side of the threaded sleeve 23, and a drive wheel 25 is provided on one side of the transmission wheel 24. A throttle 26 is connected to one side of the drive wheel 25 via a shaft. The shaft between the drive wheel 25 and the throttle 26 is rotatably connected to the turntable 6. The threaded sleeve 23 is threadedly connected to the lead screw 22 and rotatably connected to the turntable 6. A bracket 27 is connected to the middle of one side of the seat 1, and a moving mechanism 28 is provided inside the bracket 27. A lifting rod 29 is connected below the moving mechanism 28, and a base plate 30 is connected below the lifting rod 29. A buffer spring 31 is connected below the base plate 30, and a pressure plate 32 is connected to one end of the buffer spring 31. A limit rod 33 is symmetrically connected to one side of the pressure plate 32, and a guide rod 34 is connected to the center of the other side of the buffer spring 31. Welding heads 35 are symmetrically connected to the other side of the pressure plate 32. The limit rod 33 is slidably connected to the base plate 30, and the pressure plate 32 is elastically connected to the base plate 30 through the buffer spring 31. A roller is provided at the lower end of the guide rod 34. The specific operation is as follows: When the pressure block 212 applies force to the metal ring, the conductive sheet 4 contacts the metal ring and is energized, facilitating welding at the connection point. At this time, the cooling tank 3 coincides with the oil return channel 203, allowing the oil chamber 209 to connect with the oil return channel 203 through the cooling tank 3. The circulation pump 20 starts, which can draw the oil in the oil chamber 209 into the oil return channel 203 through the cooling tank 3, and then into the oil extraction pipe 18 through the oil passage 12 on the slider 11, the oil passage sleeve 13, and the oil return pipe 19. Inside, the oil is pumped back to the oil storage chamber 14 by the circulation pump 20 through the oil outlet pipe 21, allowing the oil to circulate in the oil chamber 209 and the oil storage chamber 14 through the pressure block 212, clamping rod 201, and slider 11. After processing, turning the handle 26 in the opposite direction can draw the oil in the oil chamber 209 back to the oil storage chamber 14, thereby gradually releasing the support and clamping of the material. The one-way valve in the cooling tank 3 can prevent the oil in the return oil channel 203 from being drawn out. At the same time as the circulation pump 20 starts. The moving mechanism 28 drives the lifting rod 29 to move it above the metal ring. Then, the lifting rod 29 drives the base plate 30 to descend, pressing the guide rod 34 onto the insert block 207 and compressing the buffer spring 31. When the buffer spring 31 is compressed, the limiting rod 33 can restrict the pressure plate 32 through the base plate 30 to prevent the pressure plate 32 from tilting. Then, the rotating motor 9 drives the drive gear 8 to rotate, which can drive the turntable 6 to rotate on the machine base 1 through the gear ring 7 to move the material. The rotating groove 5 can restrict the turntable 6. As the turntable 6 rotates, the guide rod 34, guided by the guide block 208, can cause the pressure plate 32 to drive the welding head 35 to intermittently approach the metal ring and contact the connection between the metal ring and the support frame, thereby performing welding work. Under the action of the buffer spring 31, the pressure plate 32 can press the guide rod 34 tightly onto the metal ring, while ensuring that the pressure plate 32 has sufficient movement space when the welding head 35 moves away from the metal ring.

[0024] In summary, this circumferential welding equipment for metal support rings is used by first stacking the lower metal support frame and the upper metal ring on the turntable 6. Then, the throttle 26 is turned, which drives the transmission wheel 24 via the drive wheel 25, causing the threaded sleeve 23 to rotate on the turntable 6. The rotation of the threaded sleeve 23 drives the lead screw 22 to raise the plug plate 15 in the oil storage chamber 14, pushing the hydraulic oil in the oil storage chamber 14 into the transfer chamber 16 and the oil passage chamber 17. After the oil enters, it pushes the slider 11 to move along the slide groove 10, thereby driving the clamps of the inner and outer rings. Rod 201 expands outward or contracts inward on turntable 6. The clamping rod 201 drives the stop block 204 and the top block 206 to simultaneously position and clamp the metal support frame and the metal ring from both the inside and outside sides, preventing the connection between the metal support frame and the metal ring from shifting, ensuring the accuracy of welding, and avoiding material damage caused by clamping the material on only one side when the material is thin. When the slider 11 moves, the slide groove 10 can work with the oil sleeve 13 to restrict the slider 11 and prevent the slider 11 from deflecting during the movement. After the material is positioned and clamped, the handle 26 is turned again, the oil pressure in the oil storage chamber 14 increases, the pressure valve in the oil passage 12 opens, and the oil can enter the oil inlet 202 from the oil passage sleeve 13 through the oil passage 12. The oil in the oil chamber 209 pushes the pressure block 212 to overcome the resistance of the compression spring 211 and move outward through the slot 210. It applies force to the upper and lower sides of the metal ring and the upper side of the support frame, providing support for the metal ring and assisting in fixing the support frame, so as to prevent the support frame or the metal ring from bulging and deforming in the middle when the inner and outer sides are simultaneously subjected to force. When the pressure block 212 extends and applies force to the metal ring, the conductive sheet 4 located at the end of the pressure block 212 comes into close contact with the metal ring and conducts welding current, preparing for the welding operation. At the same time, the cooling groove 3 inside the pressure block 212 precisely coincides with the oil return channel 203 as the pressure block 212 moves, so that the oil chamber 209 is connected to the oil return channel 203 through the cooling groove 3. At this time, the circulation pump 20 is started to drive the oil to start circulating. The circulating pump 20 draws the oil in the oil chamber 209 into the return oil channel 203 through the cooling tank 3, and then sequentially through the oil passage 12, oil passage sleeve 13, and return oil pipe 19 on the slider 11 into the oil extraction pipe 18. Finally, it is sent back to the oil storage chamber 14 through the oil outlet pipe 21, forming a closed hydraulic oil circulation loop. During the welding process, the conductive sheet 4 quickly conducts the large amount of heat generated in the welding area to the pressure block 212, while the continuously circulating hydraulic oil serves as a cooling medium, continuously carrying out the heat absorbed by the pressure block 212 and dissipating it to the outside, providing immediate and efficient cooling to the weld. This actively suppresses the unstable wave deformation caused by heat accumulation in the thin-walled metal ring, ensuring the quality of the weld formation. At the same time as the circulating pump 20 starts, the moving mechanism 28 drives the lifting rod 29 to move above the metal ring. Then the lifting rod 29 drives the base plate 30 to descend, pressing the guide rod 34 against the insert block 207 and compressing the buffer spring 31. During this process, the limiting rod 33 guides the movement of the pressure plate 32 to prevent it from deviating. After that, the rotating motor 9 drives the turntable 6 and the workpiece to rotate at a constant speed through the drive gear 8 and the gear ring 7. As the turntable 6 rotates, the guide rod 34 slides on the contour track formed by the guide blocks 208 on both sides of the insert block 207. When the guide rod 34 passes the protruding contour of the guide block 208, it is forced to push the pressure plate 32 to move the welding head 35 away from the workpiece, thus achieving automatic avoidance. After passing the protrusion, under the restoring force of the buffer spring 31, the pressure plate 32 moves the welding head 35 back to the welding position automatically, completing one "avoidance-reset" cycle. This allows the welding head 35 to automatically and intermittently approach and move away from the welding point as the position of the inner support 27 of the workpiece changes. This ensures precise contact between the welding head 35 and the welding position, and provides sufficient clearance for the welding head 35 when encountering obstacles. It completely avoids the risk of collision and damage between the welding head 35 and the inner support 27 of the workpiece, and also prevents over-welding in non-welding areas. The entire process can achieve automatic adjustment of the position of the welding head 35 without the intervention of any electrical program or power structure, which significantly improves the stability and accuracy of welding. After welding is completed, the handle 26 is turned in the opposite direction to draw the oil in the oil chamber 209 back to the oil storage chamber 14. The pressure block 212 is reset under the action of the pressure spring 211, gradually releasing the support and clamping of the workpiece. The one-way valve installed in the cooling tank 3 can effectively prevent the oil in the return oil channel 203 from being accidentally drawn out when the pressure is released, ensuring the stability of the oil circuit system.

[0025] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A ring seam welding apparatus for a metal support ring, characterized by, The device includes a base (1) and a clamping assembly (2). The clamping assembly (2) is symmetrically arranged on the base (1). The clamping assembly (2) includes clamping rods (201). Six sets of clamping rods (201) are symmetrically arranged on the base (1), and each set of clamping rods (201) consists of two rods. An oil inlet channel (202) is provided on one side of each clamping rod (201), and an oil return channel (203) is provided on the other side of each clamping rod (201). A stop block (204) is connected to the top of one of the clamping rods (201) in each set, and an insert plate (204) is provided in the middle of the clamping rod (201). 05), the upper part of the other clamp (201) in each group is provided with a top block (206), and the top of the clamp (201) is provided with an insertion block (207). The insertion block (207) is symmetrically provided with guide blocks (208) on both sides. The insertion plate (205) and the insertion block (207) are both provided with oil chambers (209). The insertion plate (205) and the insertion block (207) are both provided with slots (210). The oil chamber (209) is connected with a compression spring (211), and one end of the compression spring (211) is connected with a pressure block (212).

2. A ring seam welding apparatus for a metal support ring according to claim 1, characterized in that The side of the abutment block (204) and the top block (206) away from the clamping rod (201) are both arc surfaces, and the pressure block (212) is engaged and slidably connected to the clamping rod (201) through the oil cavity (209). The pressure block (212) passes through the side wall of the insert plate (205) and the insert block (207) through the slot (210), and the pressure block (212) is elastically connected to the oil cavity (209) through the compression spring (211).

3. A ring seam welding apparatus for a metal support ring as defined in claim 1, wherein, The pressure block (212) has a cooling groove (3) inside, and a conductive sheet (4) is provided at the end of the pressure block (212) away from the compression spring (211). One end of the cooling groove (3) is connected to the oil chamber (209), and the other end of the cooling groove (3) is misaligned with the return oil channel (203). A one-way valve is provided inside the cooling groove (3).

4. A ring seam welding apparatus for a metal support ring as defined in claim 1, wherein, The base (1) has a rotating groove (5) in the center, and a turntable (6) is provided inside the rotating groove (5). A toothed ring (7) is provided at the lower edge of the turntable (6), and a drive gear (8) is provided on one side of the toothed ring (7). A rotating motor (9) is provided on one side of the drive gear (8).

5. The circumferential welding equipment for a metal support ring according to claim 4, characterized in that, The turntable (6) has symmetrically arranged sliding grooves (10) on its surface, and a slider (11) is engaged in the sliding groove (10). An oil passage groove (12) is arranged in the slider (11), and an oil passage sleeve (13) is connected to one side of the oil passage groove (12). There are six sets of sliding grooves (10), and each set of sliding grooves (10) has two grooves. The slider (11) is slidably connected to the machine base (1) through the sliding groove (10), and the slider (11) is connected to the clamping rod (201). The oil passage groove (12) is connected to the oil inlet channel (202) and the oil return channel (203) respectively.

6. The circumferential welding equipment for a metal support ring according to claim 5, characterized in that, The turntable (6) is provided with an oil storage chamber (14) and a stopper plate (15) is provided in the oil storage chamber (14). The turntable (6) is provided with a transfer chamber (16) in the center of one side of the oil storage chamber (14) and an oil passage chamber (17) is provided on one side edge of the oil storage chamber (14). The transfer chamber (16) and the oil passage chamber (17) are connected to the oil inlet channel (202) through the oil passage sleeve (13) and the oil passage groove (12) on one side of the slider (11). A pressure valve is provided in the oil passage groove (12).

7. The circumferential welding equipment for a metal support ring according to claim 6, characterized in that, The transfer compartment (16) is equipped with an oil extraction pipe (18), and the oil passage compartment (17) is equipped with an oil return pipe (19). One end of the oil extraction pipe (18) is connected to a circulation pump (20), and an oil outlet pipe (21) is provided on one side of the circulation pump (20). The oil extraction pipe (18) and the oil return pipe (19) are connected to the oil return channel (203) through the oil passage sleeve (13) and the oil passage groove (12) on the other side of the slider (11), and the oil return pipe (19) is connected to the oil extraction pipe (18).

8. The circumferential welding equipment for a metal support ring according to claim 6, characterized in that, The plug plate (15) is connected to a lead screw (22) on one side, and a threaded sleeve (23) is provided on the outside of the lead screw (22). A transmission wheel (24) is provided on one side of the threaded sleeve (23), and a drive wheel (25) is provided on one side of the transmission wheel (24). A throttle (26) is connected to one side of the drive wheel (25) through a shaft. The shaft between the drive wheel (25) and the throttle (26) is rotatably connected to the turntable (6). The threaded sleeve (23) is threadedly connected to the lead screw (22), and the threaded sleeve (23) is rotatably connected to the turntable (6).

9. The circumferential welding equipment for a metal support ring according to claim 1, characterized in that, A bracket (27) is connected to the middle of one side of the base (1), and a moving mechanism (28) is provided inside the bracket (27). A lifting rod (29) is connected below the moving mechanism (28), and a base plate (30) is connected below the lifting rod (29). A buffer spring (31) is connected below the base plate (30), and a pressure plate (32) is connected to one end of the buffer spring (31). A limit rod (33) is symmetrically connected to one side of the pressure plate (32), and a guide rod (34) is connected to the center of the other side of the buffer spring (31). A welding head (35) is symmetrically connected to the other side of the pressure plate (32).

10. The circumferential welding equipment for a metal support ring according to claim 9, characterized in that, The limiting rod (33) is slidably connected to the base plate (30), and the pressure plate (32) is elastically connected to the base plate (30) through the buffer spring (31). The lower end of the guide rod (34) is provided with a roller.

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