A welding apparatus for manufacturing a high-sealing welded copper valve body

Abstract

The present application relates to valve body welding technical field, specifically speaking to a kind of welding equipment for manufacturing high sealing welded copper valve body, including horizontally arranged welding platform, arc-shaped locating seat for supporting valve body is equipped above welding platform, gas supply assembly is equipped between the lower part of arc-shaped locating seat and welding platform, both sides of arc-shaped locating seat are equipped with mounting plate, two groups of mounting plate are all fixedly connected with horizontally arranged first pneumatic telescopic rod, the piston rod of first pneumatic telescopic rod passes through mounting plate and is fixed with vertically arranged mounting seat;Valve body is triggered by gravity and is pressed down gas supply assembly, can automatically complete flange pipe centering clamping, coaxial alignment, automatic feeding butt joint and gas pressure self-locking type, discard traditional manual naked eye alignment, manually clamped correction operation mode, effectively eliminate artificial alignment deviation, ensure that flange pipe and valve body butt joint coaxial precision is high, greatly improve welding forming quality and valve body subsequent sealing performance.

Description

Technical Field

[0001] This invention relates to the field of valve body welding technology, and more specifically to a welding equipment for manufacturing high-sealing welded copper valve bodies. Background Technology

[0002] The two ends of a conventional copper valve body require welding flanges to be assembled. The flanges enable quick sealing and fixed installation of the valve body with the external pipeline. Currently, the welding of the copper valve body and the flanges is generally done manually or with simple semi-automatic welding equipment. The traditional manual welding method requires operators to manually place the valve body and clamp the flanges at both ends. They rely on their eyesight and experience to align the straight pipe section of the flange with the valve body opening. After alignment, welding is performed manually. The entire process is completely manual. Clamping, alignment, position correction, and station adjustment all require repeated manual adjustments and corrections. This not only results in high labor intensity, slow production cycle, and low efficiency in mass production, but also... Several patents have been published regarding existing valve body flange welding equipment (such as CN116160167A, CN218193462U, and CN220312263U). Most of these existing technologies rely on motor control and external air sources for drive and control, resulting in complex overall structures, cumbersome on-site installation, and high operating costs. Furthermore, they generally suffer from limited alignment and clamping accuracy, making it difficult to ensure the coaxiality of the flange and valve body, easily causing welding deviations and affecting the valve body's sealing performance. Moreover, most equipment can only complete a single welding action; post-weld workpiece release and station reset still require manual intervention, resulting in insufficient continuity of automated operations and difficulty in meeting the demands of large-scale, high-precision welding production. Therefore, this paper proposes a high-sealing welding equipment for manufacturing copper valve bodies, which facilitates the simultaneous welding of flanges to both ends of the valve body, effectively improving welding efficiency. Summary of the Invention

[0003] To address the problems in the prior art, this invention provides a welding equipment for manufacturing high-sealing welded copper valve bodies, which facilitates the simultaneous welding of flange pipes at both ends of the valve body, effectively improving welding efficiency.

[0004] The technical solution adopted by this invention to solve its technical problem is a welding equipment for manufacturing high-sealing welded copper valve bodies, including a horizontally arranged welding platform, an arc-shaped positioning seat for supporting the valve body above the welding platform, a gas supply component between the lower part of the arc-shaped positioning seat and the welding platform, mounting plates on both sides of the arc-shaped positioning seat, and a horizontally arranged first pneumatic telescopic rod fixedly connected to each of the two sets of mounting plates. The piston rod of the first pneumatic telescopic rod passes through the mounting plate and is fixed to a vertically arranged mounting seat. A mounting groove is opened on the side of the mounting seat near the arc-shaped positioning seat, and an automatic positioning component for clamping and positioning flange pipe is provided inside the mounting seat. A moving ring is rotatably connected to the inner side of the mounting seat, and a transmission ring is rotatably connected to the side of the moving ring away from the first pneumatic telescopic rod. A welding structure is fixedly connected to the outer side of the transmission ring, and a driving structure for driving the transmission ring is provided at the lower part of the mounting plate.

[0005] Specifically, the automatic positioning component includes an annular groove opened inside the mounting slot, and multiple sets of arc-shaped clamping plates evenly distributed along the circumference are provided in the annular groove; several sets of second pneumatic telescopic rods are fixedly installed on the outside of the mounting base, the piston rod end of the second pneumatic telescopic rod passes through the mounting base and is fixedly connected to the outside of the arc-shaped clamping plate, and the second pneumatic telescopic rod is connected to the air supply component's air passage. A horizontally positioned positioning shaft is fixed at the center of the mounting groove. The positioning shaft is used to fit the limiting flange tube. The mounting plate is fixedly connected to the first positioning telescopic rod on one side of the mounting base.

[0006] Specifically, the welding structure includes a support base fixed on the side of the transmission ring away from the moving ring, a third pneumatic telescopic rod installed on the support base, and the third pneumatic telescopic rod connected to the air supply assembly through a pipeline; an adjusting plate is fixedly connected to the piston rod end of the third pneumatic telescopic rod, a positioning rod is fixedly connected to the lower surface of the adjusting plate, and a ball is fitted at the end of the positioning rod; a welding torch head is vertically fixedly installed on one side of the adjusting plate.

[0007] Specifically, the gas supply assembly includes a gas supply cylinder located at the bottom of the welding platform, with the piston rod end of the gas supply cylinder passing through the welding platform and fixedly connected to the lower surface of the arc-shaped positioning seat; The welding platform is connected to the arc-shaped positioning seat via the second positioning telescopic rod; a circular limiting groove is provided in the middle of the inner side of the arc-shaped positioning seat, and the circular limiting groove is matched with the end structure of the valve body for limiting; the air supply cylinder is connected to the first air pressure telescopic rod, the second air pressure telescopic rod, and the third air pressure telescopic rod via pipelines respectively.

[0008] Specifically, the drive structure includes a horizontally arranged movable cylinder, inside which a sealing plate is slidably connected, and a horizontally arranged drive shaft is fixedly connected to one side of the sealing plate. A return spring is fixedly connected between the sealing plate and the inner wall of the movable cylinder; a fixing ring is fitted on the outer side of the drive shaft, and the fixing ring is fixedly connected to the outer side of the mounting base through a connecting block; a sleeve is rotatably connected to one side of the fixing ring; a spiral guide groove is opened on the outer wall of the drive shaft, and a transmission block that slides with the spiral guide groove is provided on the inner wall of the sleeve; a toothed ring is fixedly installed on the outer side of the sleeve through a one-way bearing, and a toothed structure that meshes with the toothed ring is provided on the outer side of the transmission ring; the movable cylinder is filled with hydraulic oil, and a damping hole is opened on the sealing plate.

[0009] Specifically, the mounting base has a first through hole inside, which is connected to the air supply component's air passage; a support ring is provided inside the first through hole, and a conical exhaust pipe is slidably fitted in the first through hole; a pressing spring is connected between the conical exhaust pipe and the support ring. The moving ring has a through-hole, which is initially offset from the first through-hole. The inner wall of the second through-hole has a conical extrusion surface that matches the conical exhaust pipe. The transmission ring has a third through-hole that communicates with the outside atmosphere. The third through-hole is initially coaxial with the first through-hole. The transmission ring has a through-hole with an arc-shaped waist hole. A horizontally arranged transmission rod is fixed on the side of the moving ring near the transmission ring. The transmission rod passes through the arc-shaped waist hole and is fixed with a first limiting shaft. A second limiting shaft is fixedly connected to the transmission ring on one side of the arc-shaped waist hole. A damping reset cylinder is hinged between the first limiting shaft and the second limiting shaft.

[0010] Specifically, an electromagnet for magnetically driving the shaft is installed on the side of the retaining ring, and the electromagnet's start and stop states are opposite to those of the welding torch head.

[0011] Specifically, a limiting ring is fixedly provided on the inner side of the mounting base, and an annular groove matching the limiting ring is opened on the outer side of the movable ring, with the limiting ring slidably embedded in the annular groove.

[0012] Specifically, a vertically installed support frame is fixedly mounted on the lower side of the welding platform.

[0013] The beneficial effects of this invention are: (1) The welding equipment for manufacturing high-sealing welded copper valve body of the present invention can automatically complete the flange pipe centering clamping, coaxial alignment, automatic feed docking and air pressure self-locking by triggering the air supply component under the pressure of the valve body itself. It abandons the traditional manual visual alignment and manual clamping correction operation method, effectively eliminates manual alignment deviation, ensures high coaxial accuracy of flange pipe and valve body docking, and greatly improves the welding forming quality and subsequent sealing performance of valve body.

[0014] (2) The welding equipment for manufacturing high-sealing welded copper valve body of the present invention, after the flange pipe and valve body are connected and shaped, relies on the energy storage and release characteristics of the reset spring to automatically drive the transmission ring to make a circular rotation, thereby driving the welding structure to continuously and uniformly weld around the workpiece weld seam. The whole process relies on pure mechanical energy storage transmission to realize fully automatic circumferential welding, effectively ensuring the weld seam forming quality and welding accuracy.

[0015] (3) The welding equipment for manufacturing high-sealing welded copper valve bodies described in this invention is provided with a first through hole, a second through hole, and a third through hole, and is combined with a conical exhaust pipe and a pressing spring to form an adaptive air circuit on / off structure. After the welding process is completed, the through holes are automatically aligned and connected to complete the rapid exhaust and depressurization of the air circuit. After depressurization, each air pressure rod is automatically released from the clamping limit and retracts and resets in an orderly manner. The whole machine does not require manual intervention to control the depressurization and station return. The entire process of welding, exhaust, clamping, and reset is completed automatically, and the degree of automation and work efficiency are significantly improved. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is an isometric view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the mounting plate connection structure of the present invention; Figure 4 for Figure 3 Enlarged view of region A; Figure 5 This is a schematic cross-sectional view of the mounting base of the present invention; Figure 6 for Figure 5 Enlarged view of region B; Figure 7 This is an isometric view of the mounting base, moving ring, and transmission ring of the present invention; Figure 8 This is a cross-sectional view of the mounting base portion of the present invention; Figure 9 for Figure 8 Enlarged view of region C; Figure 10 This is a schematic cross-sectional view of the movable ring portion of the present invention; Figure 11 Figure 10 Enlarged view of region D; Figure 12 This is a schematic diagram of the transmission ring structure of the present invention; Figure 13 This is a schematic cross-sectional view of the movable cylinder structure of the present invention; Figure 14This is a schematic diagram showing the flange pipe and valve body after welding according to the present invention; In the diagram: 1. Welding platform; 2. Arc-shaped positioning seat; 3. Mounting plate; 4. First pneumatic telescopic rod; 5. Mounting seat; 6. Mounting groove; 7. Moving ring; 8. Transmission ring; 9. Annular groove; 10. Arc-shaped clamping plate; 11. Second pneumatic telescopic rod; 12. Positioning shaft; 13. First positioning telescopic rod; 14. Support seat; 15. Third pneumatic telescopic rod; 16. Adjusting plate; 17. Positioning rod; 18. Ball bearing; 19. Welding torch head; 20. Air supply cylinder; 21. Second positioning telescopic rod; 22. Circular limit groove; 23. Movable cylinder; 24. Sealing plate; 25. Drive shaft; 26. Return spring; 27. Fixing ring; 28. Connecting block; 29. ​​Sleeve; 30. Spiral guide groove; 31. One-way bearing; 32. Gear ring; 33. Gear structure; 34. First through hole; 35. Support ring; 36. Conical exhaust pipe; 37. Pressing spring; 38. Second through hole; 39. Conical extrusion surface; 40. Third through hole; 41. Arc-shaped waist hole; 42. Transmission rod; 43. First limiting shaft; 44. Second limiting shaft; 45. Damped return cylinder; 46. Limiting ring; 47. Annular slot; 48. Support frame; 49. Damping hole; 50. Electromagnet. Detailed Implementation

[0018] 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.

[0019] To facilitate the simultaneous welding of flanges to both ends of the valve body and effectively improve welding efficiency, as one embodiment of the present invention, such as... Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 As shown, the welding equipment for manufacturing a high-sealing welded copper valve body according to the present invention includes a horizontally arranged welding platform 1. An arc-shaped positioning seat 2 for supporting the valve body is provided above the welding platform 1. An air supply component is provided between the lower part of the arc-shaped positioning seat 2 and the welding platform 1. Mounting plates 3 are provided on both sides of the arc-shaped positioning seat 2. A horizontally arranged first pneumatic telescopic rod 4 is fixedly connected to each of the two sets of mounting plates 3. The piston rod of the first pneumatic telescopic rod 4 passes through the mounting plate 3 and is fixedly connected to a vertically arranged mounting seat 5. A mounting groove 6 is opened on the side of the mounting seat 5 near the arc-shaped positioning seat 2. An automatic positioning component for clamping and positioning flange pipe is provided inside the mounting seat 5. A moving ring 7 is rotatably connected to the inner side of the mounting seat 5. A transmission ring 8 is rotatably connected to the side of the moving ring 7 away from the first pneumatic telescopic rod 4. A welding structure is fixedly connected to the outer side of the transmission ring 8. A driving structure for driving the transmission ring 8 is provided at the lower part of the mounting plate 3.

[0020] In use, first place the two sets of flanges to be welded into the mounting slots 6 of the two sets of mounting seats 5 to complete the initial support, and then place the copper valve body to be processed on the arc-shaped positioning seat 2 above the welding platform 1; the valve body moves the arc-shaped positioning seat 2 downward by its own weight. During the downward movement of the arc-shaped positioning seat 2, the lower air supply component is driven to move. The air supply component drives the automatic positioning component to run in sync, so that the automatic positioning component can automatically center and coaxially position the flanges, ensuring that the flanges and valve body pipe openings always keep the same axis, thus improving the docking accuracy without manual alignment and correction; Simultaneously, the air supply component drives the two sets of first pneumatic telescopic rods 4 to move synchronously. The first pneumatic telescopic rods 4 drive the mounting base 5, flange pipe, and the moving ring 7 and transmission ring 8 inside the mounting base 5 to move as a whole towards the valve body. When they move to the set position, the welding end of the flange pipe and the corresponding port of the valve body are pressed and fitted together, ensuring a stable self-locking state, effectively preventing the workpiece from loosening, misaligning, or shifting during the welding process, and ensuring stable and reliable welding conditions. Subsequently, the drive structure at the bottom of the mounting plate 3 moves, driving the transmission ring 8 to make a continuous circumferential rotation. The transmission ring 8 synchronously drives the outer welding structure to rotate at a uniform speed around the docking position of the flange pipe and the valve body, realizing fully automatic circumferential seam welding. There is no need for manual hand-held welding gun or rotating workpiece, which greatly reduces labor intensity, improves welding quality and production efficiency, and can efficiently complete the high-seal welding operation of copper valve body and flange pipe.

[0021] To ensure that the flange pipe automatically remains concentric with the valve body port, for example, such as... Figure 5 , Figure 8 , Figure 9 As shown, the present invention also includes an automatic positioning component comprising an annular groove 9 formed inside the mounting groove 6, wherein multiple sets of arc-shaped clamping plates 10 are provided in the annular groove 9 evenly distributed along the circumference; a number of sets of second pneumatic telescopic rods 11 are fixedly installed on the outside of the mounting base 5, wherein the piston rod end of the second pneumatic telescopic rod 11 passes through the mounting base 5 and is fixedly connected to the outside of the arc-shaped clamping plate 10, and the second pneumatic telescopic rod 11 is connected to the air passage of the air supply component. A horizontally positioned positioning shaft 12 is fixed at the center of the mounting groove 6. The positioning shaft 12 is used to mount the limiting flange tube. The mounting plate 3 is fixedly connected to the first positioning telescopic rod 13 on one side of the mounting base 5.

[0022] When in use, the flange pipe can be directly fitted onto the positioning shaft 12 to complete the initial positioning; the air supply component drives the second pneumatic telescopic rod 11 to move, and the second pneumatic telescopic rod 11 simultaneously pushes the arc-shaped clamping plate 10 to converge towards the center, uniformly clamping the outer wall of the flange pipe, so that the flange pipe automatically keeps concentric with the valve body pipe opening, effectively eliminating the eccentricity and skewing problems caused by manual clamping, and significantly improving the welding coaxiality and sealing quality; The first positioning telescopic rod 13, which is set between the mounting plate 3 and the mounting base 5, extends and retracts accordingly, providing horizontal guidance and auxiliary support for the mounting base 5. This prevents the mounting base 5 from swaying or shaking during movement, ensuring that the flange pipe and valve body are connected smoothly and accurately. The overall positioning is reliable and the response is rapid, which can adapt to the quick clamping and positioning requirements of flange pipes of different specifications.

[0023] For example, such as Figure 5 , Figure 6 As shown, the present invention also includes a welding structure comprising a support base 14 fixed on the side of the transmission ring 8 away from the moving ring 7, a third pneumatic telescopic rod 15 mounted on the support base 14, the third pneumatic telescopic rod 15 being connected to the air supply assembly via a pipeline; an adjusting plate 16 is fixedly connected to the piston rod end of the third pneumatic telescopic rod 15, a positioning rod 17 is fixedly connected to the lower surface of the adjusting plate 16, and a ball bearing 18 is fitted to the end of the positioning rod 17; a welding torch head 19 is vertically fixedly mounted on one side of the adjusting plate 16.

[0024] In use, after placing the flange pipe in the mounting groove 6 of the mounting base 5 and the valve body on the arc-shaped positioning seat 2, the valve body's own weight presses down to drive the air supply component. The air supply component drives the first pneumatic telescopic rod 4 to move the mounting base 5 closer to the valve body, and simultaneously drives the second pneumatic telescopic rod 11 to coaxially center and clamp the flange pipe. At the same time, it also drives the third pneumatic telescopic rod 15 to work. The third pneumatic telescopic rod 15 drives the adjusting plate 16 to move vertically, so that the ball bearing 18 fits against the outer wall of the flange pipe for adaptive abutment and limit. The ball bearing 18 is used to position the welding torch head 19, avoiding the welding torch head 19 from directly contacting the valve body and the flange pipe docking position and causing collision damage. At the same time, the ball bearing 18 can smoothly slide with the circumferential rotation of the welding structure, effectively reducing the operating friction resistance and maintaining the stability of the welding torch's working posture. There is no need for manual fine-tuning of the welding torch's height and alignment position, ensuring that the circumferential weld is uniform and neat.

[0025] To reduce equipment usage costs, for example, such as Figure 1 , Figure 2 As shown, the present invention also includes an air supply assembly comprising an air supply cylinder 20 disposed at the lower part of the welding platform 1, wherein the piston rod end of the air supply cylinder 20 passes through the welding platform 1 and is fixedly connected to the lower surface of the arc-shaped positioning seat 2. The welding platform 1 is connected to the arc-shaped positioning seat 2 via the second positioning telescopic rod 21; the arc-shaped positioning seat 2 has a circular limiting groove 22 in the middle of its inner side, and the circular limiting groove 22 is matched with the end structure of the valve body for limiting; the air supply cylinder 20 is connected to the first air pressure telescopic rod 4, the second air pressure telescopic rod 11, and the third air pressure telescopic rod 15 via pipelines respectively.

[0026] When in use, after placing the flange pipe in the mounting groove 6 and the valve body on the arc-shaped positioning seat 2, the weight of the valve body itself presses down on the arc-shaped positioning seat 2, the arc-shaped positioning seat 2 moves down to compress the air supply cylinder 20, and at the same time the second positioning telescopic rod 21 extends and retracts synchronously to guide the arc-shaped positioning seat 2 to move down smoothly. The circular limiting groove 22 can lock and limit the lower part of the valve body to prevent the valve body from shifting and shaking during placement and welding, and ensure the stability of the workpiece positioning reference. After the air supply cylinder 20 is compressed, it supplies air to the first pneumatic telescopic rod 4, the second pneumatic telescopic rod 11 and the third pneumatic telescopic rod 15 through pipelines, and synchronously drives the linkage action of multiple pneumatic components. No external air source or electrical control is required. The pneumatic triggering and power supply of the entire equipment can be completed by the weight of the workpiece itself, which reduces the equipment operating cost and the difficulty of on-site installation and layout. It should be noted that the side wall of the air supply cylinder 20 of the present invention is connected to a one-way air inlet valve that communicates with the outside atmosphere. When the welding is completed and the air circuit of the whole machine is depressurized and the workpiece is removed from the arc-shaped positioning seat 2, the outside air can be replenished into the cavity of the air supply cylinder 20 in a timely manner through the one-way air inlet valve, so that the air supply cylinder 20 can be smoothly and automatically moved upward to reset to the initial standby position, ensuring that the equipment can continuously cycle to perform workpiece clamping and welding operations.

[0027] To facilitate the circular rotation of the welding torch head 19 around the butt weld of the workpiece for welding, for example, such as Figure 3 , Figure 4 , Figure 13 As shown, the present invention also includes a drive structure comprising a horizontally arranged movable cylinder 23, a sealing plate 24 being slidably connected inside the movable cylinder 23, and a horizontally arranged drive shaft 25 being fixedly connected to one side of the sealing plate 24. A return spring 26 is fixedly connected between the sealing plate 24 and the inner wall of the movable cylinder 23; a fixing ring 27 is fitted on the outer side of the drive shaft 25, and the fixing ring 27 is fixedly connected to the outer side of the mounting base 5 through the connecting block 28; a sleeve 29 is rotatably connected to one side of the fixing ring 27; a spiral guide groove 30 is opened on the outer wall of the drive shaft 25; a transmission block that slides with the spiral guide groove 30 is provided on the inner wall of the sleeve 29; a toothed ring 32 is fixedly installed on the outer side of the sleeve 29 through a one-way bearing 31; a toothed structure 33 that meshes with the toothed ring 32 is provided on the outer side of the transmission ring 8; the movable cylinder 23 is filled with hydraulic oil, and a damping hole 49 is opened on the sealing plate 24.

[0028] In use, when the air supply component compresses and supplies air and drives the first pneumatic telescopic rod 4 to extend and move, the first pneumatic telescopic rod 4 drives the mounting base 5 to move synchronously towards the valve body. The mounting base 5 drives the fixing ring 27 to move synchronously through the connecting block 28. The fixing ring 27 drives the sleeve 29 to move together and pulls the drive shaft 25 to slide axially. During the sliding process of the drive shaft 25, it pulls the sealing plate 24 inside the movable cylinder 23 to move synchronously, so that the sealing plate 24 pulls the return spring 26 to complete the mechanical energy storage. The movable cylinder 23 is filled with hydraulic oil and cooperates with the damping hole 49 opened on the sealing plate 24, so that the drive shaft 25 moves forward smoothly and steadily. When the flange pipe is connected to the valve body port and tightened to the limit, the first pneumatic telescopic rod 4 stops feeding and remains stationary. At this time, the compressed return spring 26 releases elastic potential energy and pulls the sealing plate 24 and drive shaft 25 back in the opposite direction. Under the throttling damping action of hydraulic oil and damping hole 49, the drive shaft 25 can be reset slowly and uniformly, without instantaneous rapid rebound. By utilizing the sliding engagement between the spiral guide groove 30 on the outer wall of the drive shaft 25 and the transmission block on the inner wall of the sleeve 29, the sleeve 29 is driven to rotate in a circular motion. The sleeve 29 drives the gear ring 32 to rotate in one direction via the one-way bearing 31. The gear ring 32 then meshes with the outer tooth structure 33 of the transmission ring 8, thereby driving the transmission ring 8 to rotate in a circular motion. During the rotation of the transmission ring 8, the welding structure and the welding torch head 19 are simultaneously driven to rotate in a circular motion around the butt weld of the workpiece to perform welding, thus completing the fully automatic circumferential weld operation. No additional motor or electronic control drive is required, which simplifies the power structure of the equipment and reduces the difficulty of control and the probability of failure.

[0029] To improve overall ease of use and processing efficiency, for example, such as Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 As shown, the present invention also includes a first through hole 34 inside the mounting base 5, which is connected to the air passage of the air supply component; a support ring 35 is provided inside the first through hole 34, and a conical exhaust pipe 36 is slidably fitted in the first through hole 34; a pressing spring 37 is connected between the conical exhaust pipe 36 and the support ring 35. The moving ring 7 has a through hole 38, which is initially offset from the first through hole 34. The inner wall of the second through hole 38 has a conical extrusion surface 39 that matches the conical exhaust pipe 36. The transmission ring 8 has a third through hole 40 that communicates with the outside atmosphere. The third through hole 40 is initially coaxial with the first through hole 34. The transmission ring 8 has a through arc-shaped waist hole 41. A horizontally arranged transmission rod 42 is fixed on the side of the moving ring 7 near the transmission ring 8. The transmission rod 42 passes through the arc-shaped waist hole 41 and is fixedly provided with a first limiting shaft 43. A second limiting shaft 44 is fixedly connected to the transmission ring 8 on one side of the arc-shaped waist hole 41. A damping reset cylinder 45 is hinged between the first limiting shaft 43 and the second limiting shaft 44.

[0030] In use, the first through hole 34, the second through hole 38 and the third through hole 40 are staggered and separated in the initial state to ensure that the air supply component is sealed and pressure-maintained in the early stage. After the flange pipe and valve body are squeezed together and shaped, the overall air circuit maintains a stable state of compression and pressure holding. The tooth structure 33 drives the transmission ring 8 to start rotating in a circle. During the rotation of the transmission ring 8, the second limit shaft 44 is moved synchronously. The second limit shaft 44 then squeezes the damping reset cylinder 45 to perform buffer compression and energy storage. After the damping reset cylinder 45 is compressed to the limit stroke, it drives the moving ring 7 to rotate in a circle together with the transmission ring 8. At this time, the second through hole 38 and the third through hole 40 first form a connected state to maintain the temporary balance of the air circuit. After the transmission ring 8 and the moving ring 7 rotate with the welding structure to complete the full circle of circumferential welding, the second through hole 38 and the first through hole 34 are aligned. Under the reset pushing action of the pressing spring 37, the conical exhaust pipe 36 is automatically embedded in the second through hole 38, so that the first through hole 34, the second through hole 38 and the third through hole 40 are completely connected. The third through hole 40 is always connected to the outside atmosphere, and the sealed gas inside the gas supply component is quickly depressurized and discharged to the atmosphere through the three through holes. After the air circuit is depressurized, the second pneumatic telescopic rod 11 releases the clamping limit on the flange pipe and no longer clamps and fixes the workpiece. At the same time, the first pneumatic telescopic rod 4 retracts due to depressurization and pulls the mounting seat 5 back smoothly. The third pneumatic telescopic rod 15 simultaneously drives the welding structure and welding torch head 19 to reset and lift upward, so that the welding structure is completely separated from the workpiece. Each mechanism returns to its initial position in sequence. The operator can directly remove the welded workpiece from the arc-shaped positioning seat 2, which facilitates the equipment to quickly enter the next round of clamping and welding operations. After the machine is depressurized and reset, the damped reset cylinder 45 slowly rebounds and resets, causing the transmission ring 8 and the moving ring 7 to rotate slightly by a certain angle. This causes the second through hole 38 to re-misalign and separate from the third through hole 40, and the conical exhaust pipe 36 returns to its initial sealed state, restoring the air circuit to a closed and ready state, preparing for the next workpiece clamping and welding. Automatic alignment, automatic exhaust, automatic depressurization, automatic machine reset, and automatic return of the through holes to the misaligned and sealed state can be achieved after welding without the need for electrical control switches and sensors, and without manual intervention, further improving the overall ease of use and processing efficiency.

[0031] For example, such as Figure 3 , Figure 4 As shown, the present invention also includes an electromagnet 50 for magnetically driving the shaft 25 mounted on the side of the fixing ring 27, the electromagnet 50 being in the opposite start-stop state to the welding gun head 19.

[0032] When in use, in the initial standby state of the device, the electromagnet 50 on the fixed ring 27 is always energized and attracted, which magnetically attracts and fixes the drive shaft 25, so that the drive shaft 25, the fixed ring 27, and the sleeve 29 are kept in a relatively locked state. When the air supply component drives the first air pressure telescopic rod 4 to move the mounting seat 5 towards the valve body, the fixing ring 27 moves synchronously with the mounting seat 5. At this time, because the electromagnet 50 magnetically holds the drive shaft 25, it can synchronously pull the drive shaft 25 to slide forward axially. During the sliding process of the drive shaft 25, it pulls the sealing plate 24 inside the movable cylinder 23 to move together, and stretches the reset spring 26 to complete the mechanical energy storage. After the flange pipe is connected to the valve body port, the welding torch head 19 starts welding. The electromagnet 50 is linked with the start and stop state of the welding torch head 19 and automatically de-energizes and releases the magnetic attraction restraint on the drive shaft 25. After losing the magnetic attraction limit, the stretched and stored return spring 26 releases its elastic potential energy and pulls the sealing plate 24 and the drive shaft 25 back in a straight line. Relying on the cooperation of the spiral guide groove 30 on the outer wall of the drive shaft 25 and the transmission block on the inner wall of the sleeve 29, the transmission ring 8 and the welding structure rotate synchronously to complete the welding of the entire circumferential seam. When the welding torch head 19 completes one revolution of welding and stops working, the electromagnet 50 is energized again to restore its magnetic attraction state, re-attracting and fixing the drive shaft 25, so that the drive shaft 25, sleeve 29, and fixing ring 27 return to their relative locking posture and return to their initial mating state, preparing for the next workpiece clamping and power storage transmission cycle.

[0033] For example, such as Figure 7 , Figure 8 As shown, the present invention also includes a limiting ring 46 fixedly provided on the inner side of the mounting base 5, and an annular groove 47 matching the limiting ring 46 opened on the outer side of the movable ring 7, with the limiting ring 46 slidably embedded in the annular groove 47.

[0034] During use, the limiting ring 46 on the inner side of the mounting base 5 is slidably embedded in the annular groove 47 on the outer side of the moving ring 7, which can limit and guide the moving ring 7, prevent the moving ring 7 from shifting and shaking when rotating, and ensure smooth and coaxial operation.

[0035] For example, such as Figure 2 As shown, the present invention also includes a vertically arranged support frame 48 fixedly installed on the lower side of the welding platform 1.

[0036] During use, the support frame 48 provides stable support and load-bearing for the entire machine, reducing operational vibration and ensuring stable operation of the equipment.

[0037] In use, the flange pipe to be welded is first placed in the mounting groove 6 of the mounting base 5 and fitted onto the positioning shaft 12 to complete the initial positioning. Then, the copper valve body is placed on the arc-shaped positioning seat 2. The circular limiting groove 22 on the inner side of the arc-shaped positioning seat 2 is used to lock and limit the valve body, which can effectively prevent the valve body from shifting and shaking during placement and welding. The positioning reference is stable and reliable. After the workpiece is placed, the arc-shaped positioning seat 2 is pressed down by the weight of the valve body. The arc-shaped positioning seat 2 moves down and compresses the air supply cylinder 20 below. At the same time, the second positioning telescopic rod 21 extends and extends synchronously to guide the arc-shaped positioning seat 2 to move down smoothly without tilting. After the air supply cylinder 20 is compressed, it generates air pressure and supplies air to the first air pressure telescopic rod 4, the second air pressure telescopic rod 11, and the third air pressure telescopic rod 15 through the pipeline. No external air source or electrical control is required. The pneumatic triggering of the equipment can be automatically completed by the weight of the workpiece itself, which simplifies the structure and reduces the cost of use. After the air supply component supplies air, the second pneumatic telescopic rod 11 synchronously pushes multiple sets of arc-shaped clamping plates 10 in the annular groove 9 to converge towards the center, uniformly clamping and centering the outer wall of the flange pipe, so that the flange pipe and the valve body pipe opening automatically maintain the same axis, effectively avoiding the problem of eccentricity and skewing caused by manual clamping, and improving the welding coaxiality accuracy and subsequent valve body sealing performance; at the same time, the first pneumatic telescopic rod 4 drives the mounting seat 5, flange pipe and moving ring 7 and transmission ring 8 to be smoothly fed towards the valve body as a whole, and the first positioning telescopic rod 13 between the mounting plate 3 and the mounting seat 5 extends and extends to guide, avoiding swaying and shaking when the mounting seat 5 moves, and ensuring that the flange pipe and valve body are connected smoothly; At the same time, the third pneumatic telescopic rod 15 moves synchronously, driving the adjusting plate 16 and the positioning rod 17 to move vertically, so that the ball bearing 18 at the end of the positioning rod 17 adapts to fit against the outer wall of the flange pipe. This can not only accurately align and limit the welding gun head 19, but also avoid the welding gun head 19 from hardly contacting the workpiece and causing bump damage. In addition, the ball bearing 18 can slide smoothly with the circumference of the welding structure, reducing operating friction, maintaining the stable working posture of the welding gun, and ensuring that the circumferential weld is uniform and regular. During the movement of the mounting base 5 toward the valve body, the connecting block 28 drives the fixed ring 27 to move synchronously. The electromagnet 50 on the fixed ring 27 is initially in an electromagnetic attraction state, magnetically locking the drive shaft 25, so that the drive shaft 25 moves forward axially synchronously with the fixed ring 27, pulling the sealing plate 24 inside the movable cylinder 23 to move and stretching the return spring 26 to complete the mechanical storage. The movable cylinder 23 is filled with hydraulic oil, which cooperates with the damping hole 49 on the sealing plate 24 to make the forward feeding process of the drive shaft 25 smooth and stable. After the flange pipe and valve body port are squeezed together and tightened, the first pneumatic telescopic rod 4 stops feeding and maintains stable air pressure. At this time, the welding gun head 19 is started to start welding. The electromagnet 50 is in the opposite state to the welding gun head 19 and is automatically de-energized and demagnetized, releasing the magnetic attraction binding on the drive shaft 25. The return spring 26 releases elastic potential energy and pulls the sealing plate 24 and drive shaft 25 back. Under the throttling damping effect of hydraulic oil and damping hole 49, the drive shaft 25 returns to its original position slowly and uniformly, without instantaneous rapid rebound. Through the cooperation of the spiral guide groove 30 on the outer wall of the drive shaft 25 and the transmission block on the inner wall of the sleeve 29, the sleeve 29 is driven to rotate circumferentially. Through the meshing transmission of the one-way bearing 31, toothed ring 32 and the outer tooth structure 33 of the transmission ring 8, the transmission ring 8 and the outer welding structure are driven to rotate around the workpiece weld at a uniform speed to perform welding. The welding speed is uniform and stable, avoiding uneven weld formation and mechanism impact jamming caused by instantaneous too fast rotation. Fully automatic circumferential welding can be achieved without the need for an additional motor drive. After the welding torch head 19 completes a full circle of welding along with the transmission ring 8 and the moving ring 7, the second through hole 38 aligns with the first through hole 34 as the rotation angle changes. The conical exhaust pipe 36 automatically inserts into the second through hole 38 under the reset and pushing action of the pressing spring 37, so that the first through hole 34, the second through hole 38, and the third through hole 40 are connected. The third through hole 40 is connected to the outside atmosphere, realizing rapid and automatic depressurization of the gas inside the gas supply component. After the gas circuit is depressurized, the second pneumatic telescopic rod 11 releases the clamping limit on the flange pipe, the first pneumatic telescopic rod 4 retracts due to depressurization and pulls the mounting base 5 to move backward smoothly. The third pneumatic telescopic rod 15 simultaneously drives the welding structure and the welding torch head 19 to lift and reset upward. The entire process does not require manual intervention for clamping, adjusting, and resetting operations, and has a high degree of automation. After all components of the machine are reset, the damped reset cylinder 45 slowly rebounds, causing the transmission ring 8 and the moving ring 7 to rotate slightly by a certain angle, so that the second through hole 38 is repositioned and separated from the third through hole 40. The air circuit returns to a closed standby state, and the equipment automatically returns to the initial working position. The operator can directly remove the welded workpiece from the arc-shaped positioning seat 2 and proceed directly to the next set of workpieces for clamping and welding. The process is seamless and no manual adjustment and reset are required, which greatly reduces labor intensity and improves the efficiency of batch welding production.

[0038] 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 protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding equipment for manufacturing a high-sealing welded copper valve body, comprising a horizontally arranged welding platform (1), characterized in that: An arc-shaped positioning seat (2) for supporting the valve body is provided above the welding platform (1). An air supply component is provided between the lower part of the arc-shaped positioning seat (2) and the welding platform (1). Mounting plates (3) are provided on both sides of the arc-shaped positioning seat (2). A first pneumatic telescopic rod (4) is fixedly connected to both sets of mounting plates (3). The piston rod of the first pneumatic telescopic rod (4) passes through the mounting plate (3) and is fixedly mounted on a vertically set mounting seat (5). A mounting groove (6) is provided on the side of the mounting seat (5) near the arc-shaped positioning seat (2). An automatic positioning component for clamping and positioning flange pipe is provided inside the mounting seat (5). A moving ring (7) is rotatably connected to the inner side of the mounting seat (5). A transmission ring (8) is rotatably connected to the side of the moving ring (7) away from the first pneumatic telescopic rod (4). A welding structure is fixedly connected to the outer side of the transmission ring (8). A drive structure for driving the transmission ring (8) is provided at the lower part of the mounting plate (3).

2. The welding equipment for manufacturing a high-sealing welded copper valve body according to claim 1, characterized in that, The automatic positioning component includes an annular groove (9) opened inside the mounting groove (6), and multiple sets of arc-shaped clamping plates (10) evenly distributed along the circumference are provided in the annular groove (9); several sets of second pneumatic telescopic rods (11) are fixedly installed on the outside of the mounting base (5), the piston rod end of the second pneumatic telescopic rod (11) passes through the mounting base (5) and is fixedly connected to the outside of the arc-shaped clamping plate (10), and the second pneumatic telescopic rod (11) is connected to the air supply component air passage; The mounting slot (6) has a horizontally positioned positioning shaft (12) fixed at its center. The positioning shaft (12) is used to fit the limiting flange tube. The mounting plate (3) is fixedly connected to the first positioning telescopic rod (13) on one side of the mounting base (5).

3. The welding equipment for manufacturing a high-sealing welded copper valve body according to claim 2, characterized in that, The welding structure includes a support base (14) fixed on the side of the transmission ring (8) away from the moving ring (7), a third pneumatic telescopic rod (15) is installed on the support base (14), the third pneumatic telescopic rod (15) is connected to the air supply assembly through a pipeline; an adjustment plate (16) is fixedly connected to the piston rod end of the third pneumatic telescopic rod (15), a positioning rod (17) is fixedly connected to the lower surface of the adjustment plate (16), and a ball bearing (18) is assembled at the end of the positioning rod (17); a welding torch head (19) is vertically fixedly installed on one side of the adjustment plate (16).

4. The welding equipment for manufacturing a high-sealing welded copper valve body according to claim 3, characterized in that, The gas supply assembly includes a gas supply cylinder (20) located at the bottom of the welding platform (1). The piston rod end of the gas supply cylinder (20) passes through the welding platform (1) and is fixedly connected to the lower surface of the arc-shaped positioning seat (2). The welding platform (1) is connected to the arc-shaped positioning seat (2) through the second positioning telescopic rod (21); the arc-shaped positioning seat (2) has a circular limiting groove (22) in the middle of its inner side, and the circular limiting groove (22) is matched with the end structure of the valve body for limiting; the air supply cylinder (20) is connected to the first air pressure telescopic rod (4), the second air pressure telescopic rod (11), and the third air pressure telescopic rod (15) through pipelines respectively.

5. The welding equipment for manufacturing a high-sealing welded copper valve body according to claim 4, characterized in that, The drive structure includes a horizontally arranged movable cylinder (23), and a sealing plate (24) is slidably connected inside the movable cylinder (23). A horizontally arranged drive shaft (25) is fixedly connected to one side of the sealing plate (24). A return spring (26) is fixedly connected between the sealing plate (24) and the inner wall of the movable cylinder (23); a fixing ring (27) is fitted on the outer side of the drive shaft (25), and the fixing ring (27) is fixedly connected to the outer side of the mounting base (5) through the connecting block (28); a sleeve (29) is rotatably connected to one side of the fixing ring (27), a spiral guide groove (30) is opened on the outer wall of the drive shaft (25), and a transmission block that slides with the spiral guide groove (30) is provided on the inner wall of the sleeve (29); a toothed ring (32) is fixedly installed on the outer side of the sleeve (29) through a one-way bearing (31), and a toothed structure (33) that meshes with the toothed ring (32) is provided on the outer side of the transmission ring (8); the movable cylinder (23) is filled with hydraulic oil, and a damping hole (49) is opened on the sealing plate (24).

6. The welding equipment for manufacturing a high-sealing welded copper valve body according to claim 5, characterized in that, The mounting base (5) has a first through hole (34) inside, which is connected to the air supply component. A support ring (35) is provided inside the first through hole (34), and a conical exhaust pipe (36) is sealed and slidably assembled in the first through hole (34). A pressing spring (37) is connected between the conical exhaust pipe (36) and the support ring (35). The moving ring (7) has a through hole (38) that passes through it. The second through hole (38) is initially misaligned with the first through hole (34). The inner wall of the second through hole (38) has a conical extrusion surface (39) that is compatible with the conical exhaust pipe (36). The transmission ring (8) has a third through hole (40) that communicates with the outside atmosphere. The third through hole (40) is initially coaxial with the first through hole (34). The transmission ring (8) has a through arc-shaped waist hole (41). The moving ring (7) has a horizontally arranged transmission rod (42) fixed on the side near the transmission ring (8). The transmission rod (42) passes through the arc-shaped waist hole (41) and is fixedly provided with a first limiting shaft (43). The arc-shaped waist hole (41) has a second limiting shaft (44) that is fixedly connected to the transmission ring (8). A damping reset cylinder (45) is hinged between the first limiting shaft (43) and the second limiting shaft (44).

7. The welding equipment for manufacturing a high-sealing welded copper valve body according to claim 6, characterized in that, An electromagnet (50) for magnetically driving the shaft (25) is mounted on the side of the fixing ring (27). The electromagnet (50) is in the opposite state to the welding torch head (19).

8. The welding equipment for manufacturing a high-sealing welded copper valve body according to claim 7, characterized in that, The mounting base (5) is fixedly provided with a limiting ring (46) on the inner side, and the movable ring (7) is provided with an annular groove (47) that matches the limiting ring (46) on the outer side, and the limiting ring (46) is slidably embedded in the annular groove (47).

9. The welding equipment for manufacturing a high-sealing welded copper valve body according to claim 8, characterized in that, A vertically installed support frame (48) is fixedly installed on the lower side of the welding platform (1).

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