Welding equipment for valve inner ring machining

Abstract

The invention discloses welding equipment for valve inner ring machining, and relates to the technical field of valve welding, the welding equipment comprises a frame body, a conveying belt is arranged in the frame body, and a plurality of partition plates are equidistantly arranged on the conveying belt. A push plate, a clamping block and the like in the fixing assembly accurately and stably clamp the valve body, a rotating drum drives the valve body to rotate, and the welding assembly performs efficient welding, so that rotary inner ring automatic welding is performed on the valve body, and finally automatic discharging is realized, so that the welding efficiency is greatly improved, the labor cost is reduced, and the welding quality is improved through accurate clamping and fixing. The contact block, the push block and the like on the push plate interact, accurate feeding and positioning are achieved, the welding quality and accuracy are remarkably improved, the reasonable and compact structural design is matched with the first spring, the second spring, the limiting block, the limiting groove and other structures, and the stability and smoothness of equipment operation are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of valve welding, and in particular to welding equipment used for processing valve inner rings. Background Art

[0002] Valves are control components in fluid delivery systems and have functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. They can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. When processing and producing valves, the inner ring of the valve needs to be welded.

[0003] The current welding equipment used for valve inner ring processing has been found to have at least the following technical problems: First, the traditional valve inner ring welding is mostly done by manually placing the valve body on the clamping station, and then using welding equipment to weld the valve inner ring. After welding, the staff is required to manually release the fixture on the valve, and then remove the valve, and then place other valves on the clamping station to fix them. Loading, clamping, fixing, releasing, and unloading all require manual operation. The entire operation process is cumbersome, time-consuming, and labor-intensive, which reduces the welding efficiency of the valve; Second, manual operation makes it difficult to ensure the consistency of the position of the valve body on the clamping station each time, and deviations are prone to occur, thus affecting the accuracy and quality of welding.

[0004] Third, when facing the needs of mass production, the speed and efficiency of manual welding are far from meeting the market requirements. In response to the above problems, we propose a welding equipment that can achieve fully automated operation, including precise loading, stable fixation, high-quality welding and automatic unloading, which has become the key to improving production efficiency and product quality in the valve manufacturing industry. Summary of the invention

[0005] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a welding device for machining a valve inner ring to solve the above-mentioned technical problems.

[0006] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: A welding device for processing an inner ring of a valve comprises a frame, a conveyor belt is arranged in the frame, a plurality of partitions are equidistantly arranged on the conveyor belt, a valve body is placed between each adjacent partition, notches flush with the conveyor belt are opened on both sides of the upper surface of the frame, a base is fixedly installed at the end of the frame, a rotating drum is rotatably installed on the upper end of the base, a welding assembly is arranged above the rotating drum, the welding assembly comprises a connecting rod, a connecting block 1 and a welding head, the welding head is installed on the connecting block 1, a fixing assembly is arranged in the rotating drum, the fixing assembly comprises a push plate, three clamping blocks for fixing the valve body are equidistantly arranged on the push plate circumferentially, a pushing assembly is arranged on the frame, the pushing assembly comprises a pushing rod, two U-shaped rings 1 are fixedly installed on the pushing rod, a positioning assembly is arranged on the rotating drum, the positioning assembly comprises a long rod, two U-shaped rings 2 are fixedly installed on the long rod, and the two U-shaped rings 2 are arranged opposite to the opening directions of the two U-shaped rings 1.

[0007] Preferably: a sliding rod is slidably installed in the connecting rod, and a connecting block 2 is slidably installed on the sliding rod, and an electric push rod 1 is fixedly installed at the bottom end of the connecting block 2, and an electric push rod 2 is fixedly installed on the connecting rod, and the telescopic rod 2 of the electric push rod 2 is fixedly connected to the sliding rod, and an electric push rod 3 is fixedly installed on the sliding rod, and the telescopic rod 3 of the electric push rod 3 is fixedly connected to the connecting block 2. A servo motor 2 for driving the rotating drum to rotate is fixedly installed in the base, and a center hole is opened on the upper surface of the rotating drum, and an electric push rod 4 is fixedly installed on the bottom wall of the inner cavity of the base, and a push plate is slidably installed in the inner cavity of the rotating drum, and the telescopic rod 4 of the electric push rod 4 is fixedly connected to the middle of the bottom end of the push plate, and three sliding grooves are equidistantly opened on the upper surface of the push plate, and the bottom end of each of the clamping blocks is slidably installed in the sliding groove.

[0008] Preferably: a round rod is fixedly installed in each of the slide grooves, a spring is movably sleeved on each of the round rods, each of the clamping blocks is fixedly connected to the inner wall of the slide groove via a spring, a contact block is fixedly installed on the inner side of each clamping block, a fixed block is fixedly installed in the center hole, three push blocks are fixedly installed on the fixed block at equal distances from the circumference, each of the push blocks and each of the contact blocks are triangular in shape, each of the push blocks is located above the contact block, limiting grooves are provided on the inner walls of both sides of the rotating drum, limiting blocks are fixedly installed on both ends of the push plate, and each of the limit blocks is slidably installed in the limit grooves.

[0009] Preferably: a support arm is fixedly mounted on the end of the frame, a motor is fixedly mounted on the support arm, a threaded rod is fixedly connected to the output shaft of the motor, the threaded rod penetrates the push rod and is threadedly connected to the push rod, a limit rod is fixedly mounted on the support arm, the limit rod movably penetrates the push rod, a feed plate is fixedly mounted on the end of the frame, the feed plate is located at a notch away from the support arm, the base is located on one side of the feed plate, a gear ring is movably sleeved on the rotating drum, and a ring is provided on the inner wall of the gear ring shaped groove, a limiting ring is arranged in the annular groove, the limiting ring is fixedly sleeved on the rotating drum, the long rod is fixedly installed on the upper end of the gear ring, an extension rod is fixedly installed on the outer end of the long rod, a threaded rod two is rotatably installed between the extension rod and the long rod, a servo motor three is fixedly installed on the long rod, an output shaft three of the servo motor three is fixedly connected to the threaded rod two, a push rod is slidably installed on the upper end of the extension rod, the push rod movably passes through the long rod, one end of the push rod is fixedly connected to a pushing block, and the pushing block is located on the inner side of the long rod.

[0010] Preferably: a rack is movably passed through the frame, the rack is meshed with the gear ring, a contact rod is fixedly installed at one end of the rack, a rectangular plate is fixedly sleeved on the rack, the rectangular plate is fit with the outer end of the frame, an L-plate is fixedly connected to the outer end of the frame, two round rods are fixedly connected between the L-plate and the frame, two springs are movably sleeved on the two round rods, the two round rods movably pass through the rectangular plate, the rectangular plate is fixedly connected to the L-plate through two springs, the contact rod is located at the outer end of the L-plate, the contact rod is located on one side of the gear ring, two support arms are fixedly installed on the end of the frame, the connecting rod is fixedly installed on the two support arms, a material smoothing plate is fixedly installed on the end of the frame, and the material smoothing plate is located on one side of the rotating drum.

[0011] (III) Beneficial effects 1: The welding equipment realizes a highly automated welding process. The conveyor belt can automatically convey the valve body. The push rod and U-shaped ring 1 and U-shaped ring 2 work together to accurately complete the loading and positioning. The push plate, clamping block and other fixed components are accurately and firmly clamped. The rotating drum drives the valve body to rotate. The welding components are efficiently welded, thereby automatically welding the rotary inner ring of the valve body, and finally realizing automatic unloading. This greatly improves the welding efficiency and reduces labor costs. Through precise clamping and fixing, the interaction of the contact block and push block on the push plate, as well as precise loading and positioning, the welding quality and accuracy are significantly improved. The reasonable and compact structural design, combined with the spring 1, spring 2, limit block, limit groove and other structures, ensures the stability and smoothness of the equipment operation.

[0012] Second: The three clamping blocks in the fixing assembly can stably and accurately clamp and fix the valve body. Under the coordinated action of the electric push rod, push plate, contact block and push block, automatic tightening is achieved, so that the rotation of the drum can drive the valve body to rotate, thereby automatically welding the inner ring of the valve body, effectively improving the welding efficiency of the inner ring of the valve body.

[0013] 3: The clever combination of the push rod, U-shaped ring 1 and U-shaped ring 2 can accurately position the valve body at the center of the rotating drum, so that the clamping block can be accurately inserted into the valve body for clamping, ensuring the accuracy and consistency of each loading, and effectively avoiding welding errors caused by position deviation.

[0014] 4. The welding equipment realizes a highly automated production process. The conveyor belt transports the valve body, push rod and U-shaped ring for precise loading, the rotating drum drives the rotary welding and the automatic unloading is completed in one go, which greatly reduces manual intervention, significantly improves production efficiency and reduces labor costs.

[0015] Five: The rotation of the gear ring will drive the long rod to rotate, and the rotation of the long rod will drive the two U-shaped rings 2 to rotate 90 degrees with the center of the rotating drum as the axis, so that the positions of the two U-shaped rings 2 correspond to the positions of the feed plate, and then the electric push rod 4 is started to move the push plate downward, so that the fixing assembly releases the fixation of the valve body, and then the servo motor 3 is started to rotate the threaded rod 2, and the rotation of the threaded rod 2 drives the servo motor 3 to move, and the movement of the servo motor 3 drives the push block to move, and the movement of the push block drives the valve body to move, so that the valve body is pushed to the feed plate and slides out along the inclination direction of the feed plate, thereby realizing automatic unloading of the valve body after welding. The entire unloading process is smooth and highly automated, which greatly improves the unloading efficiency, reduces manual operation, and reduces labor intensity.

[0016] 6. The welding equipment can continuously process and weld multiple valve bodies in sequence. Through the continuous transportation of the conveyor belt and the coordinated action of each component, the valve bodies are automatically welded in sequence, which greatly improves the continuity of the welding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0018] Figure 1 The overall structure diagram of the welding equipment used for valve inner ring processing of the present invention; Figure 2 is a structural diagram of the frame of the present invention; Figure 3 It is a structural diagram of the base of the present invention; Figure 4 It is a structural diagram of a cutaway drum of the present invention; Figure 5 It is a structural diagram of the clamping block of the present invention; Figure 6 is a structural diagram of a welding assembly of the present invention; Figure 7 is a structural diagram of the gear ring of the present invention; Figure 8 is a structural diagram of the rack of the present invention; Fig. 9 It is a structural diagram of the push rod of the present invention.

[0019] Legend: 1. Frame; 11. Conveyor belt; 12. Partition plate; 13. Support arm 1; 14. Motor 1; 15. Threaded rod 1; 16. Limit rod; 17. Feed plate; 18. L plate; 19. Support arm 2; 2. Base; 21. Rotating drum; 22. Center hole; 23. Electric push rod 4; 24. Limit groove; 3. Welding assembly; 31. Connecting rod; 32. Connecting block 1; 33. Welding head; 34. Electric push rod 1; 35. Sliding rod; 36. Connecting block 2; 37. Electric push rod 3; 38. Electric push rod 2; 4. Push plate; 41 , slide groove; 42, clamping block; 43, round rod one; 44, spring one; 45, contact block; 46, fixed block; 47, push block; 48, limit block; 5, push rod; 51, U-shaped ring one; 52, valve body; 6, gear ring; 61, annular groove; 62, limit ring; 7, long rod; 71, U-shaped ring two; 72, extension rod; 73, servo motor three; 74, threaded rod two; 75, push rod; 76, push block; 77, smoothing plate; 9, rack; 91, contact rod; 92, rectangular plate; 93, round rod two; 94, spring two. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] Embodiment: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, in order to solve the problems existing in the prior art, the present invention provides a welding device for processing the inner ring of a valve, comprising a frame 1, a conveyor belt 11 is arranged in the frame 1, a plurality of partitions 12 are evenly arranged on the conveyor belt 11, a valve body 52 is placed between each adjacent partition 12, both sides of the upper surface of the frame 1 are provided with notches flush with the conveyor belt 11, a base 2 is fixedly installed at the end of the frame 1, a rotating drum 21 is rotatably installed on the upper end of the base 2, a welding assembly 3 is arranged above the rotating drum 21, the welding assembly 3 comprises a connecting rod 31, a connecting block 32 and a welding head 33, the welding head 33 is installed on the connecting block 32, a fixing assembly is arranged in the rotating drum 21, the fixing assembly comprises a push plate 4, and valve bodies 52 are evenly arranged on the circumference of the push plate 4 for aligning the valve The three clamping blocks 42 are fixed to the door body 52, and a pushing assembly is arranged on the frame 1, and the pushing assembly includes a pushing rod 5, on which two U-shaped rings 51 are fixedly installed, and a positioning assembly is arranged on the rotating drum 21, and the positioning assembly includes a long rod 7, on which two U-shaped rings 71 are fixedly installed, and the two U-shaped rings 71 are arranged opposite to the opening directions of the two U-shaped rings 51, a sliding rod 35 is slidably installed in the connecting rod 31, and a connecting block 36 is slidably installed on the sliding rod 35, and an electric push rod 34 is fixedly installed on the bottom end of the connecting block 36, and a telescopic rod 1 of the electric push rod 34 is fixedly connected to the connecting block 32, an electric push rod 2 38 is fixedly installed on the connecting rod 31, and a telescopic rod 2 of the electric push rod 2 38 is fixedly connected to the sliding rod 35, and the sliding rod 3 5 is fixedly installed with an electric push rod 37, and the telescopic rod 3 of the electric push rod 37 is fixedly connected to the connecting block 26. A servo motor 2 for driving the rotating drum 21 to rotate is fixedly installed in the base 2. A center hole 22 is provided on the upper surface of the rotating drum 21, and an electric push rod 4 23 is fixedly installed on the bottom wall of the inner cavity of the base 2. A push plate 4 is slidably installed in the inner cavity of the rotating drum 21, and the telescopic rod 4 of the electric push rod 4 23 is fixedly connected to the middle part of the bottom end of the push plate 4. Three slide grooves 41 are equidistantly provided on the circumference of the upper surface of the push plate 4, and the bottom end of each clamping block 42 is respectively slidably installed in the slide groove 41, and a round rod 43 is fixedly installed in each slide groove 41, and a spring 44 is movably sleeved on each round rod 43, and each clamping block 42 is respectively connected to the slide groove 4 through the spring 44. 1 is fixedly connected, a contact block 45 is fixedly installed on the inner side of each clamping block 42, a fixed block 46 is fixedly installed in the center hole 22, three push blocks 47 are fixedly installed on the circumference of the fixed block 46 at equal intervals, each push block 47 and each contact block 45 are triangular in shape, each push block 47 is respectively located above the contact block 45, limiting grooves 24 are provided on the inner walls of both sides of the rotating drum 21, limiting blocks 48 are fixedly installed at both ends of the push plate 4, and each limiting block 48 is respectively slidably installed in the limiting groove 24, a support arm 13 is fixedly installed at the end of the frame 1, a motor 14 is fixedly installed on the support arm 13, and a threaded rod 15 is fixedly connected to the output shaft of the motor 14, and the threaded rod 15 passes through the push rod 5 and is threadedly connected to the push rod 5.A limit rod 16 is fixedly installed on the support arm 13, and the limit rod 16 movably penetrates the pushing rod 5. A feeding plate 17 is fixedly installed on the end of the frame 1, and the feeding plate 17 is located at the notch away from the support arm 13. The base 2 is located on one side of the feeding plate 17. A gear ring 6 is movably sleeved on the rotating drum 21. An annular groove 61 is provided on the inner wall of the gear ring 6. A limit ring 62 is arranged in the annular groove 61. The limit ring 62 is fixedly sleeved on the rotating drum 21. The long rod 7 is fixedly installed on the upper end of the gear ring 6, and an extension rod 72 is fixedly installed on the outer end of the long rod 7. A threaded rod 2 74 is rotatably installed between the extension rod 72 and the long rod 7. A servo motor 3 73 is fixedly installed on the long rod 7, and an output shaft 3 of the servo motor 3 73 is fixedly connected to the threaded rod 2 74. A push rod 75 is slidably installed on the upper end of the extension rod 72. The push rod 75 movably penetrates the long rod 7, and one end of the push rod 75 is fixedly connected to the A push block 76 is connected, and the push block 76 is located inside the long rod 7. A rack 9 is movably penetrated in the frame 1, and the rack 9 is meshed with the gear ring 6. A contact rod 91 is fixedly installed at one end of the rack 9. A rectangular plate 92 is fixedly sleeved on the rack 9, and the rectangular plate 92 is fitted with the outer end of the frame 1. The outer end of the frame 1 is fixedly connected with an L plate 18. A round rod 2 93 is fixedly connected between the L plate 18 and the frame 1. A spring 2 94 is movably sleeved on the round rod 2 93. The round rod 2 93 movably penetrates the rectangular plate 92. The rectangular plate 92 is fixedly connected to the L plate 18 through the spring 2 94. The contact rod 91 is located at the outer end of the L plate 18, and the contact rod 91 is located on one side of the gear ring 6. A support arm 2 19 is fixedly installed at the end of the frame 1, and the connecting rod 31 is fixedly installed on the support arm 2 19. A material-smoothing plate 77 is fixedly installed at the end of the frame 1, and the material-smoothing plate 77 is located on one side of the rotating drum 21.

[0022] Working principle: The first step is to place multiple valve bodies 52 between every two partitions 12, and the frame 1 is equipped with a servo motor 3 for driving the conveyor belt 11 to roll. The conveyor belt 11 rolls to transport the valve body 52 to the gap, and then start the motor 14 to rotate the threaded rod 15, and the rotation of the threaded rod 15 drives the push rod 5 to move. The movement of the push rod 5 drives the two U-shaped rings 151 to move, and the movement of the two U-shaped rings 151 pushes the valve body 52 from the conveying plate 17 to the gap. On the rotating drum 21, the two U-shaped rings 2 71 and the two U-shaped rings 1 51 form a staggered design. At this time, the two U-shaped rings 2 71 and the two U-shaped rings 1 51 are both sleeved on the valve body 52 to form a positioning for the valve body 52, so that the valve body 52 is located at the center of the rotating drum 21. Then, the valve body 52 is fixed by using a fixing assembly. At this time, the servo motor 3 in the base 2 is started to rotate the rotating drum 21, and the valve body 52 is rotated by the rotation of the rotating drum 21. The valve body 52 is automatically welded by rotating the inner ring of the valve body 52 using the welding assembly 3; In the second step, the valve bodies 52 can be transported in sequence by rolling the conveyor belt 11, and the valve bodies 52 on the conveyor belt 11 can be pushed onto the rotating drum 21 in sequence by moving the push rod 5 and the U-shaped ring 1 51, so as to realize the transportation and loading of multiple valves in sequence, and the telescopic rod 4 is moved upward by starting the electric push rod 4 23, and the push plate 4 is moved upward by the telescopic rod 4, and the three clamping blocks 42 are moved upward by the push plate 4, so that the three clamping blocks 42 are inserted into the valve body 52, and the three clamping blocks 42 are moved upward while driving the three The contact block 45 moves upward. When the contact block 45 contacts the surface of the push block 47, as the clamping block 42 and the contact block 45 move upward, the push block 47 applies a force to the contact block 45, so that the three clamping blocks 42 gradually move outward. The three clamping blocks 42 apply a force to the inside of the valve body 52. ​​The three clamping blocks 42 expand outward to clamp and fix the valve body 52, and the valve body 52 is automatically fixed. At this time, the rotation of the rotating drum 21 can drive the valve body 52 to rotate, so as to perform rotary inner ring automatic welding on the valve body 52. In the third step, when the valve body 52 is pushed to move to the rotating drum 21, when the valve body 52 is about to be completely separated from the feeding plate 17, one end of the valve body 52 is already located in the two U-shaped rings 71. As the two U-shaped rings 51 continue to push, the valve body 52 is completely separated from the feeding plate 17, so that the valve body 52 is located between the two U-shaped rings 71 and the two U-shaped rings 51, so that the position of the valve body 52 is precisely defined, so that the valve body 52 can accurately reach the center of the rotating drum 21, so that the three clamping blocks 42 can be accurately inserted into the valve body 52 from the center hole 22, so that the valve body 52 can be clamped and fixed; In the fourth step, after welding of a valve body 52 is completed, the push rod 5 and the U-shaped ring 1 51 are moved back to reset to the initial state, and then the push rod 5 and the U-shaped ring 1 51 continue to move backward, and the movement of the push rod 5 will apply a force to the contact rod 91, so that the contact rod 91 moves backward, and the contact rod 91 moves backward, which drives the rack 9 to move backward, and the movement of the rack 9 drives the gear ring 6 to rotate, and the rotation of the gear ring 6 drives the long rod 7 to rotate, and the rotation of the long rod 7 drives the two U-shaped rings 2 71 to rotate 90 degrees with the center of the rotating drum 21 as the axis, so that the positions of the two U-shaped rings 2 71 are aligned with the position of the smoothing plate 77. Correspondingly, the electric push rod 4 23 is then started to move the push plate 4 downward, so that the fixing assembly releases the fixation of the valve body 52, and then the servo motor 3 73 is started to rotate the threaded rod 2 74, and the rotation of the threaded rod 2 74 drives the servo motor 3 73 to move, and the movement of the servo motor 3 73 drives the push block 76 to move, and the movement of the push block 76 drives the valve body 52 to move, so that the valve body 52 is pushed to the material shunting plate 77 and slides out along the inclined direction of the material shunting plate 77, so as to realize the automatic unloading of the valve body 52 after the welding is completed. The whole unloading process is smooth and highly automated, which reduces manual operation and labor intensity. Step 5: When the push rod 5 does not apply force to the contact rod 91, the elastic reset function of the second spring 94 is used to reset the rack 9, and the gear ring 6 is reset by the reset of the rack 9, and the long rod 7 and the second U-shaped ring 71 are reset by the reset of the gear ring 6, so as to facilitate the subsequent positioning of the valve body 52. ​​The spring 1 44 plays a role in resetting the clamping block 42, so as to facilitate the subsequent clamping and fixing of the valve body 52. ​​The two limit blocks 48 are respectively slidably installed in the limit grooves 24, which play a role in limiting the push plate 4, so that the push plate 4 can only move in the vertical direction, and the structural design is reasonable. The sixth step is to start the electric push rod 2 38 to make the slide bar 35 and the welding head 33 move in the X-axis direction, the electric push rod 37 controls the connecting block 2 36 and the welding head 33 to move in the Y-axis direction, and the electric push rod 1 34 controls the welding head 33 to move in the Z-axis direction, so as to realize flexible adjustment of the welding head 33 and make it more convenient to use.

[0023] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A welding device for machining a valve inner ring, comprising a frame (1), characterized in that: A conveyor belt (11) is arranged in the frame (1), a plurality of partitions (12) are arranged at equal intervals on the conveyor belt (11), a valve body (52) is placed between each adjacent partition (12), both sides of the upper surface of the frame (1) are provided with notches flush with the conveyor belt (11), a base (2) is fixedly mounted at the end of the frame (1), a rotating drum (21) is rotatably mounted on the upper end of the base (2), and a welding assembly (3) is arranged above the rotating drum (21); The welding assembly (3) comprises a connecting rod (31), a connecting block (32) and a welding head (33), the welding head (33) being mounted on the connecting block (32), a fixing assembly being arranged in the rotating cylinder (21), the fixing assembly comprising a push plate (4), three clamping blocks (42) being arranged equidistantly around the push plate (4) for fixing the valve body (52), a pushing assembly being arranged on the frame (1), the pushing assembly comprising a pushing rod (5), two U-shaped rings (51) being fixedly mounted on the pushing rod (5); Wherein, a positioning assembly is arranged on the rotating drum (21), and the positioning assembly comprises a long rod (7), and two U-shaped rings (71) are fixedly mounted on the long rod (7), and the opening directions of the two U-shaped rings (71) and the two U-shaped rings (51) are arranged opposite to each other.

2. A welding device for machining valve inner ring according to claim 1, characterized in that: A slide rod (35) is slidably mounted in the connecting rod (31), a connecting block 2 (36) is slidably mounted on the slide rod (35), an electric push rod 1 (34) is fixedly mounted on the bottom end of the connecting block 2 (36), and a telescopic rod 1 of the electric push rod 1 (34) is fixedly connected to the connecting block 1 (32); Wherein, an electric push rod 2 (38) is fixedly mounted on the connecting rod (31), a telescopic rod 2 of the electric push rod 2 (38) is fixedly connected to the sliding rod (35), an electric push rod 3 (37) is fixedly mounted on the sliding rod (35), and a telescopic rod 3 of the electric push rod 3 (37) is fixedly connected to the connecting block 2 (36).

3. A welding device for machining inner rings of valves according to claim 2, characterized in that: A servo motor (2) for driving the rotating drum (21) to rotate is fixedly installed in the base (2); a center hole (22) is provided on the upper surface of the rotating drum (21); an electric push rod (23) is fixedly installed on the bottom wall of the inner cavity of the base (2); and a push plate (4) is slidably installed in the inner cavity of the rotating drum (21); The telescopic rod four of the electric push rod four (23) is fixedly connected to the middle of the bottom end of the push plate (4), and three slide grooves (41) are equidistantly provided on the circumference of the upper surface of the push plate (4), and the bottom end of each clamping block (42) is slidably installed in the slide groove (41).

4. A welding device for machining a valve inner ring according to claim 3, characterized in that: A round rod (43) is fixedly installed in each of the slide grooves (41), a spring (44) is movably sleeved on each of the round rods (43), and each of the clamping blocks (42) is fixedly connected to the inner wall of the slide groove (41) via the spring (44); Wherein, a contact block (45) is fixedly mounted on the inner side of each clamping block (42).

5. A welding device for machining inner rings of valves according to claim 4, characterized in that: A fixed block (46) is fixedly installed in the central hole (22), and three push blocks (47) are fixedly installed on the fixed block (46) at equal intervals on the circumference, each push block (47) and each contact block (45) are triangular in shape, and each push block (47) is located above the contact block (45); Wherein, both inner walls of the rotating drum (21) are provided with limit grooves (24), and both ends of the push plate (4) are fixedly mounted with limit blocks (48), and each of the limit blocks (48) is slidably mounted in the limit groove (24).

6. A welding device for machining valve inner rings according to claim 5, characterized in that: A support arm (13) is fixedly mounted on the end of the frame (1), a motor (14) is fixedly mounted on the support arm (13), an output shaft (1) of the motor (14) is fixedly connected to a threaded rod (15), the threaded rod (15) passes through the push rod (5) and is threadedly connected to the push rod (5); A limit rod (16) is fixedly mounted on the support arm (13), and the limit rod (16) movably penetrates the push rod (5). A feed plate (17) is fixedly mounted on the end of the frame (1), and the feed plate (17) is located at a notch away from the support arm (13). The base (2) is located on one side of the feed plate (17).

7. The welding equipment for valve inner ring processing according to claim 6, characterized in that: The rotating drum (21) is movably sleeved with a gear ring (6), the inner wall of the gear ring (6) is provided with an annular groove (61), a limit ring (62) is arranged in the annular groove (61), the limit ring (62) is fixedly sleeved on the rotating drum (21), the long rod (7) is fixedly mounted on the upper end of the gear ring (6), an extension rod (72) is fixedly mounted on the outer end of the long rod (7), and a second threaded rod (74) is rotatably mounted between the extension rod (72) and the long rod (7); A servo motor three (73) is fixedly mounted on the long rod (7), an output shaft three of the servo motor three (73) is fixedly connected to the threaded rod two (74), a push rod (75) is slidably mounted on the upper end of the extension rod (72), the push rod (75) movably passes through the long rod (7), one end of the push rod (75) is fixedly connected to a push block (76), and the push block (76) is located on the inner side of the long rod (7).

8. The welding equipment for machining inner ring of valve according to claim 7, characterized in that: A rack (9) is movably inserted into the frame (1), the rack (9) meshing with the gear ring (6), a contact rod (91) is fixedly mounted on one end of the rack (9), a rectangular plate (92) is fixedly sleeved on the rack (9), and the rectangular plate (92) is in contact with the outer end of the frame (1); The outer end of the frame body (1) is fixedly connected to an L-plate (18), a second round rod (93) is fixedly connected between the L-plate (18) and the frame body (1), and a second spring (94) is movably sleeved on the second round rod (93).

9. The welding equipment for machining inner ring of a valve according to claim 8, characterized in that: The second round rod (93) movably penetrates the rectangular plate (92); the rectangular plate (92) is fixedly connected to the L plate (18) via the second spring (94); the contact rod (91) is located at the outer end of the L plate (18); and the contact rod (91) is located on one side of the gear ring (6).

10. The welding equipment for machining inner ring of valve according to claim 9, characterized in that: A second support arm (19) is fixedly mounted on the end of the frame (1), and the connecting rod (31) is fixedly mounted on the second support arm (19); Wherein, a material-smoothing plate (77) is fixedly mounted on the end of the frame (1), and the material-smoothing plate (77) is located on one side of the rotating drum (21).

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