Intelligent welding device for pipe fittings

Abstract

The invention relates to the technical field of pipe fitting welding, in particular to an intelligent pipe fitting welding device which comprises a welding base and two telescopic welding heads, two supporting side rings are fixed to the upper surface of the welding base, and two material supporting bottom plates distributed front and back are fixed to the position, between the two supporting side rings, of the upper surface of the welding base; a movable meshing frame is arranged above the welding base and located between the two supporting side rings, a threaded rod is arranged above the welding base, and the two supporting side rings are rotationally connected to the two ends of the threaded rod in a sleeving mode. When the two outer edge rods get close to each other, the corresponding hinged supporting rods make contact with the push rods to be gradually expanded so as to tightly support the inner walls of pipe fittings, the two pipe fittings can be automatically clamped under mutual contact, the elastic damping structures generate resistance to movement of the welded pipe fittings, the welded pipe fittings are separated from the outer edge rods and the movable inner edge rods, and therefore the welding efficiency is improved. When the movable meshing frame moves left and right in a reciprocating mode, the pipe fitting to be welded can be automatically replaced.

Description

Technical Field

[0001] The invention relates to the technical field of pipe fitting welding, and in particular to an intelligent welding device for pipe fittings. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. For pipe fittings made of welded pipes, for pipe fitting manufacturers, the forming process of welded pipes is basically the same as that of seamless pipes.

[0003] Chinese patent CN116352364B discloses a pipe welding device, including a base, a fixing device is arranged on the base, the fixing device includes two groups of support frame mechanisms, the two groups of support frame mechanisms are fixedly mounted on the base, and a fixing component movably mounted inside the support frame mechanism, the fixing component includes two groups of side plates, driving the first gear to move radially, so that four groups of clamps move toward the center until the receiving shaft slides to the end of the inclined slide groove and cannot move, at which time the pipe is clamped between the four groups of clamps, thereby fixing the clamps, when the pipe needs to be disassembled, the first gear is driven to return to the initial position radially, and the four groups of clamps release the fixation of the pipe, the first gear can be driven by an existing electric cylinder or a cylinder and other devices, and the above operation can be achieved after the first gear moves.

[0004] The above-mentioned related technologies have the following defects: a large number of pipe fittings need to be welded during processing, but after each welding of a group of pipe fittings, the existing equipment needs to manually remove the welded pipe fittings, and then place two new pipe fittings respectively at the fastening structure, which cannot be welded quickly and continuously. Therefore, an intelligent welding device for pipe fittings is proposed. Summary of the invention

[0005] In order to continuously weld pipe fittings during the welding of a large number of pipe fittings, the present invention provides an intelligent welding device for pipe fittings.

[0006] The two ends of the two support plates are provided with a toothed connection, and the two ends of the two support plates are provided with a toothed connection, and the toothed connection is provided with a toothed connection. The two ends of a movable inner edge rod are slidably sleeved with an outer edge rod, the outer edge rod is elastically connected to an adjacent movable inner edge rod, and the sides of the two end plates that are away from each other are fixed with the adjacent outer edge rod, and a plurality of push rods are fixed at the middle position of each movable inner edge rod, and a hinged support rod is arranged on the left and right sides of each push rod, and the hinged support rod is elastically rotatably connected with the adjacent outer edge rod, and the upper ends of the two supporting side rings that are close to each other are rotatably connected with a turntable, and the turntable is elastically connected to the adjacent supporting side ring, and the turntable and the end plate are arranged coaxially, and an elastic damping structure is installed on the side where the two turntables are close to each other, and the outer edge rod is located between the two elastic damping structures, and a long tooth column is meshed in front of the two staggered gears, and a power long shaft is arranged above the welding base, and the two support side rings are rotatably sleeved on the outer surface of the power long shaft, and a transmission gear is arranged above the ends of the two staggered gears that are away from each other, and an outer tooth ring is meshed above the transmission gear, and the outer tooth ring is fixedly sleeved on the outer surface of the adjacent turntable, and a stop shaft is elastically slidably penetrated at the axis of the side where the two supporting side rings are close to each other.

[0007] A horizontal telescopic control structure is fixed above the two supporting side rings, and the ends of the two horizontal telescopic control structures that are away from each other are respectively connected to the sides of the two supporting side rings that are away from each other. The two telescopic welding heads are located between the two supporting side rings, and the upper ends of the two telescopic welding heads are respectively connected to the telescopic ends of the two horizontal telescopic control structures. A unloading barrel is fixed to the upper surface of one of the two supporting base plates.

[0008] Optionally, the number of push rods connected to the same movable inner edge rod is an even number, the push rods connected to the same movable inner edge rod are set to two lengths, the lengths of each adjacent two outer edge rods connected to the same movable inner edge rod are different, the two ends of each push rod are equidistant from adjacent hinged struts, and the connection between the push rod and the movable inner edge rod is located in the middle part of the push rod.

[0009] Optionally, the horizontal telescopic control structure includes a horizontal boom and a power telescopic rod, the upper end of the telescopic welding head is slidably connected to the horizontal boom, the horizontal boom is fixed to an adjacent supporting side ring, the horizontal boom is fixedly sleeved on the fixed end of the power telescopic rod, and the upper end of the telescopic welding head is fixed to the telescopic end of the power telescopic rod.

[0010] Optionally, the force-bearing structure includes a square frame and a movable contact plate, the square frame is slidably sleeved on the outer surface of the movable contact plate, the square frame is fixed to an adjacent end plate, the lower end of the movable contact plate is notched, and the outer edge rod connected to the end plate is located inside the notch of the adjacent movable contact plate.

[0011] Optionally, the elastic damping structure includes a plurality of elastic damping bent plates, the distance between the middle part of the elastic damping bent plate and the axis of the turntable is smaller than the distance between the two ends of the elastic damping bent plate and the axis of the turntable, the plurality of elastic damping bent plates are fixed to adjacent turntables, and the plurality of elastic damping bent plates fixed to the same turntable are evenly distributed in a circular array around the axis of the turntable.

[0012] Optionally, the minimum length between the surfaces of the two staggered gears that are close to each other and the surfaces of the two transmission gears that are far away from each other is equal to the length of the long tooth column, and the staggered gears are staggered left and right with adjacent transmission gears.

[0013] Optionally, four slide plates are fixed on the upper surface of the welding base and between the two supporting side rings. The four slide plates are distributed in an eight-shape between the two slide plates on the left and the two slide plates on the right. The front-to-back width of the lower end of the movable engaging frame is smaller than the gap width between two adjacent front-to-back slide plates.

[0014] Optionally, the upper end of the support base plate connected to the lower material barrel is set at an angle, a plurality of baffle rods are fixed on the upper surface of the other support base plate, a partition is fixedly inserted in the middle position inside the lower material barrel, there is a gap between the lower ends of the two support base plates, and the front-to-back width of the lower end of the movable engaging frame is smaller than the width of the gap between the lower ends of the two support base plates.

[0015] Optionally, the outer edge rod and the movable inner edge rod are located above the support material bottom plate, and multiple push rods connected to the same movable inner edge rod are evenly distributed in a circular array around the axis of the movable inner edge rod, and the push rods are arranged parallel to the movable inner edge rod.

[0016] In summary, the present invention includes the following beneficial technical effects: 1. The present invention provides a support base plate, a movable meshing frame, a movable inner edge rod and an outer edge rod. The two outer edge rods and the movable inner edge rod on one side of the movable meshing frame are inserted into the two lowest pipe fittings. The movable meshing frame pushes the two lowest pipe fittings close to the blocking shaft on one side. When the movable meshing frame drives the movable inner edge rod and the outer edge rod on the other side to move out of the range of the support base plate, the two rows of pipe fittings to be welded on the upper side continue to roll downward under gravity until they contact the support base plate. Under the obstruction of the elastic damping structure, the ends of the two pipe fittings that are close to each other are gradually pressed, and after the outer edge rod contacts the rotating disk, they gradually approach the outer edge rod on the other side. When the two outer edge rods are close to each other, the corresponding hinged support rods are connected to the push rods. The contact gradually opens to tighten the inner wall of the pipe fitting, and the two pipe fittings are automatically clamped under mutual contact. After welding is completed, when the movable engagement frame is controlled to move in the opposite direction, the elastic damping structure generates resistance to the movement of the welded pipe fitting, so that the hinged support rod loosens the pipe fitting, and the welded pipe fitting is separated from the outer edge rod and the movable inner edge rod. Then, when the movable engagement frame continues to move, the outer edge rod and the movable inner edge rod on the other side are reinserted into the two new pipe fittings located above the support base plate, pushing the pipe fitting gradually close to the supporting side ring on the other side, so that only a large number of pipe fittings need to be loaded into the discharge barrel in two rows, and the pipe fittings to be welded can be automatically replaced during the reciprocating left and right movement of the movable engagement frame, and the welding of a large number of pipe fittings can be completed.

[0017] 2. The present invention provides push rods and hinged struts of two lengths. When the two outer edge rods on the surface of the same movable inner edge rod approach each other under the action of the blocking shaft, the push rods of different lengths push the corresponding hinged struts to gradually open each other, so that each pipe fitting has two annular force points, thereby increasing the stability of the coaxial fixation of the pipe fitting.

[0018] 3. The present invention arranges offset gears, externally threaded barrels, long tooth columns and externally toothed rings. When the articulated support rods are not used to tighten the pipe fittings, the long tooth columns rotate and engage with the offset gears through elastic connection to drive the threaded rods to rotate and engage with the movable engagement frame. When the articulated support rods tighten the pipe fittings and the pipe fittings are in contact with the turntable, the movable engagement frame cannot continue to approach the turntable. When the offset gears continue to rotate, they rotate relative to the threaded rods and the externally threaded barrel, so that the offset gears gradually move relative to the threaded rods to engage with the transmission gears. When the transmission gears engage with the offset gears, the pipe fittings are driven to rotate through the turntable, so that the telescopic welding head can weld the circumference of the pipe fittings.

[0019] 4. The present invention sets a square frame and a movable contact plate. When the movable engaging plate drives the pipe fitting to move out of the support material bottom plate, the outer edge rod supports the inner top wall of the pipe fitting. When the elastic damping bending plate presses the two pipe fittings, the pipe fitting fits with the movable contact plate. When the hinged support rod gradually opens and pushes the pipe fitting, the pipe fitting drives the movable contact plate to move in the square frame, thereby reducing the wear of the pipe fitting when one end of the pipe fitting moves close to the movable engaging frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 is a schematic diagram of the structure of the connection between the stopper shaft and the rotating disk in an embodiment of the present invention; Figure 3 It is a schematic front view of some structures in an embodiment of the present invention; Figure 4 It is a right side schematic diagram of some structures in an embodiment of the present invention; Figure 5 2 is a schematic diagram of the structure of the connection between the offset gear and the external threaded cylinder in an embodiment of the present invention; Figure 6 2 is a schematic diagram of the structure of the connection between the end plate and the movable engagement frame in an embodiment of the present invention; Figure 7 2 is a schematic diagram of the structure of the movable inner edge rod and the push rod in the embodiment of the present invention; Figure 8 It is a schematic diagram of the structure of the connection between the outer edge rod and the movable inner edge rod in an embodiment of the present invention.

[0021] : 1. welding base; 2. telescopic welding head; 3. supporting side ring; 4. supporting base plate; 5. movable meshing frame; 6. threaded rod; 7. external threaded barrel; 8. offset gear; 9. end plate; 10. movable inner edge rod; 11. outer edge rod; 12. push rod; 13. hinged support rod; 14. turntable; 15. elastic damping structure; 151. elastic damping bending plate; 16. power long shaft; 17. force-bearing structure; 171. square frame; 172. movable contact plate; 18. long tooth column; 19. stop shaft; 20. external gear ring; 21. horizontal telescopic control structure; 211. horizontal suspension rod; 212. power telescopic rod; 22. unloading barrel; 23. sliding plate; 24. partition; 25. stop rod; 26. transmission gear. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-Figure 8 The present invention is described in further detail.

[0023] The embodiment of the present invention discloses an intelligent welding device for pipe fittings. Figure 1-Figure 8As shown, it includes a welding base 1 and two telescopic welding heads 2, two supporting side rings 3 are fixed on the upper surface of the welding base 1, and two supporting base plates 4 distributed front and back are fixed on the upper surface of the welding base 1 between the two supporting side rings 3, a movable engaging frame 5 is arranged above the welding base 1 and between the two supporting side rings 3, a threaded rod 6 is arranged above the welding base 1, the two supporting side rings 3 are rotatably sleeved on the two ends of the threaded rod 6, and the left and right ends of the threaded rod 6 and located between the two movable engaging frames 5 are fixedly sleeved with external threaded tubes 7, and the outer surfaces of the two external threaded tubes 7 are threadedly sleeved with staggered gears 8, and the ends of the two staggered gears 8 that are away from each other are elastically connected with the ends of the two external threaded tubes 7 that are away from each other, and when the staggered gears 8 rotate, the threaded rod 6 is driven to rotate through the elastic connection, and the movable engaging frame 5 is threadedly sleeved on the outer surface of the threaded rod 6, and when the threaded rod 6 rotates forward and reversely, it can drive the movable engaging frame 5 to move left and right respectively by engaging with the movable engaging frame 5.

[0024] The left and right sides of the movable engaging frame 5 are rotatably plugged with end plates 9, and the two end plates 9 are elastically connected to the upper end of the movable engaging frame 5. The two end plates 9 are installed with a force-bearing structure 17 on the sides away from each other. The force-bearing structure 17 includes a square frame 171 and a movable contact plate 172. The square frame 171 is slidably sleeved on the outer surface of the movable contact plate 172, and the square frame 171 is fixed to the adjacent end plate 9. The lower end of the movable contact plate 172 is notched, and the outer edge rod 11 connected to the end plate 9 is located inside the notch of the adjacent movable contact plate 172.

[0025] A movable inner edge rod 10 is provided on the side away from each other of the two end plates 9, and an outer edge rod 11 is slidably sleeved at both ends of each movable inner edge rod 10, and the outer edge rod 11 is elastically connected to the adjacent movable inner edge rod 10. The two outer edge rods 11 elastically connected to the movable inner edge rod 10 have a tendency to move away from each other, and the sides of the two end plates 9 that are away from each other are fixed to the adjacent outer edge rod 11, and a plurality of push rods 12 are fixed at the middle position of each movable inner edge rod 10, and a hinged support rod 13 is provided on the left and right sides of each push rod 12, and the hinged support rod 13 is elastically rotatably connected to the adjacent outer edge rod 11, and the number of push rods 12 connected to the same movable inner edge rod 10 It is an even number, and the push rod 12 connected to the same movable inner edge rod 10 is set to two lengths, and the lengths of each adjacent two outer edge rods 11 connected to the same movable inner edge rod 10 are different. The distances between the two ends of each push rod 12 and the adjacent hinged struts 13 are equal, and the connection between the push rod 12 and the movable inner edge rod 10 is located in the middle part of the push rod 12. When the two outer edge rods 11 elastically connected to the movable inner edge rod 10 approach each other, the corresponding push rod 12 is driven and the corresponding hinged strut 13 is pushed to open, so that the hinged strut 13 can be opened synchronously to coaxially clamp the two pipe fittings. At the same time, the inner wall of each pipe fitting has two annular support points to increase the stability of the pipe fitting.

[0026] The upper ends of the two supporting side rings 3 are rotatably connected to the sides close to each other with a turntable 14, the turntable 14 is elastically connected to the adjacent supporting side rings 3, the turntable 14 is coaxially arranged with the end plate 9, and the sides of the two turntables 14 close to each other are installed with an elastic damping structure 15, the outer edge rod 11 is located between the two elastic damping structures 15, the elastic damping structure 15 includes a plurality of elastic damping bent plates 151, the distance between the middle part of the elastic damping bent plate 151 and the axis of the turntable 14 is smaller than the distance between the two ends of the elastic damping bent plate 151 and the axis of the turntable 14, the plurality of elastic damping bent plates 151 are fixed to the adjacent turntables 14, and the plurality of elastic damping bent plates 151 fixed to the same turntable 14 The bending plates 151 are evenly distributed in an array around the axis of the turntable 14. When the movable engaging frame 5 pushes the pipe fitting to separate from the supporting base plate 4, the outer edge rod 11 supports the inner top wall of the pipe fitting. When the elastic damping bending plate 151 contacts the pipe fitting, resistance is generated to the movement of the pipe fitting, gradually pushing the two pipe fittings into contact and pressing tightly. At the same time, the other pipe fitting gradually presses the movable contact plate 172, and then gradually pushes the pipe fitting to move upward relative to the outer edge rod 11 when the hinged support rod 13 gradually opens. The pressure between the pipe fitting and the movable contact plate 172 can drive the movable contact plate 172 to move upward relative to the square frame 171, so that the pipe fitting will not be worn relative to the structure when moving upward.

[0027] A long tooth column 18 is meshed in front of the two staggered gears 8, a power long shaft 16 is arranged above the welding base 1, and the two supporting side rings 3 are rotatably sleeved on the outer surface of the power long shaft 16. A transmission gear 26 is arranged above the ends of the two staggered gears 8 that are away from each other, and an outer tooth ring 20 is meshed above the transmission gear 26. The outer tooth ring 20 is fixedly sleeved on the outer surface of the adjacent turntable 14. The minimum length between the sides of the two staggered gears 8 that are close to each other and the sides of the two transmission gears 26 that are away from each other is equal to the length of the long tooth column 18, and the staggered gears 8 and the adjacent transmission gears 26 are staggered left and right.

[0028] A stop shaft 19 is elastically and slidably penetrated at the axis of one side where the two supporting side rings 3 are close to each other. The stop shaft 19 and the supporting side rings 3 have a tendency to move between the two supporting side rings 3 elastically. The axis of the supporting side rings 3 is hole-shaped and does not interfere with the sliding of the stop shaft 19. When the outer edge rod 11 approaches the turntable 14, the outer edge rod 11 gradually approaches the other outer edge rod 11 under the obstruction of the stop shaft 19. After the outer edge rod 11 can no longer approach the other outer edge rod 11, when the movable engagement frame 5 continues to move, the stop shaft 19 is pushed to move relative to the turntable 14 through the outer edge rod 11, and the long tooth column 18 rotates and drives the threaded rod 6 to rotate through the elastic connection by meshing with the offset gear 8. After the pipe fitting is fitted and pressed against the turntable 14, the offset gear 8 continues to rotate relative to the threaded rod 6 and the external threaded tube 7, so that the offset gear 8 gradually moves relative to the threaded rod 6 to mesh with the transmission gear 26. When the transmission gear 26 meshes with the offset gear 8, the pipe fitting is driven to rotate through the turntable 14.

[0029] A horizontal telescopic control structure 21 is fixed above the two supporting side rings 3, and the ends of the two horizontal telescopic control structures 21 that are away from each other are respectively connected to the sides of the two supporting side rings 3 that are away from each other. The two telescopic welding heads 2 are located between the two supporting side rings 3, and the upper ends of the two telescopic welding heads 2 are respectively connected to the telescopic ends of the two horizontal telescopic control structures 21. The horizontal telescopic control structure 21 includes a horizontal suspension rod 211 and a power telescopic rod 212. The upper end of the telescopic welding head 2 is slidably connected to the horizontal suspension rod 211, and the horizontal suspension rod 211 is fixed to the adjacent supporting side rings 3. The horizontal suspension rod 211 is fixedly sleeved on the fixed end of the power telescopic rod 212, and the upper end of the telescopic welding head 2 is fixed to the telescopic end of the power telescopic rod 212. The power telescopic rod 212 can change the welding position of the telescopic welding head 2 by extension, and the telescopic welding head 2 itself can control whether it is welded close to the pipe fitting by extension.

[0030] A lower material barrel 22 is fixed to the upper surface of one of the two supporting base plates 4, and the upper end of the supporting base plate 4 connected to the lower material barrel 22 is inclined. A plurality of blocking rods 25 are fixed to the upper surface of the other supporting base plate 4, and a partition plate 24 is fixedly inserted in the middle position inside the lower material barrel 22. There is a gap between the lower ends of the two supporting base plates 4, and the front-to-rear width of the lower end of the movable engaging frame 5 is smaller than the width of the gap between the lower ends of the two supporting base plates 4.

[0031] Four sliding plates 23 are fixed on the upper surface of the welding base 1 and between the two supporting side rings 3. The two sliding plates 23 on the left and the two sliding plates 23 on the right of the four sliding plates 23 are distributed in an eight-shaped shape. The front-to-back width of the lower end of the movable engaging frame 5 is smaller than the gap width between the two adjacent front-to-back sliding plates 23. The outer edge rod 11 and the movable inner edge rod 10 are located above the support base plate 4. A plurality of push rods 12 connected to the same movable inner edge rod 10 are evenly distributed in an axial circular array of the movable inner edge rod 10. The push rod 12 is arranged parallel to the movable inner edge rod 10. When the pipe welding is completed, when the movable engaging frame 5 is controlled to move in the opposite direction, the elastic damping bending plate 151 generates resistance to the movement of the welded pipe fittings, so that after the hinged support rod 13 loosens the pipe fittings, the welded pipe fittings detach from the outer edge rod 11 and the movable inner edge rod 10, and the fallen pipe fittings fall onto the sliding plates 23 on the front and rear sides to prevent interference with the movement of the movable engaging frame 5.

[0032] The working principle is as follows: the pipes to be welded are divided into two rows and placed on both sides of the partition plate 24 in the lower barrel 22. The support base plate 4 supports the two pipes at the bottom. The long tooth column 18 rotates and engages with the offset gear 8 through an elastic connection to drive the threaded rod 6 to rotate. When the movable meshing frame 5 moves left and right by engaging with the rotating threaded rod 6, the two outer edge rods 11 and the movable inner edge rod 10 on one side of the movable meshing frame 5 are inserted into the two pipes at the bottom. The movable meshing frame 5 pushes the two pipes at the bottom close to the stop shaft 19 on one side. When the movable meshing frame 5 drives the movable inner edge rod 10 on the other side, the movable meshing frame 5 moves left and right. When the rod 10 and the outer edge rod 11 move out of the range of the support base plate 4, the two rows of pipe fittings to be welded above continue to roll downward under gravity until they contact the support base plate 4. Under the obstruction of the elastic damping bending plate 151, the ends of the two pipe fittings approaching each other are gradually pressed together, and after the outer edge rod 11 contacts the turntable 14, it gradually approaches the outer edge rod 11 on the other side. When the two outer edge rods 11 approach each other, the corresponding hinged support rods 13 gradually open and tighten the inner wall of the pipe fittings by contacting the push rod 12. The two pipe fittings are automatically clamped when they contact each other, and the two outer edge rods 11 stop approaching each other. Then, when the movable meshing frame 5 moves, the outer edge rod 11 pushes the blocking shaft 19 to move elastically relative to the turntable 14, so that the pipe fitting is pressed against the turntable 14, and when the offset gear 8 continues to rotate, it rotates relative to the threaded rod 6 and the external threaded cylinder 7, so that the offset gear 8 gradually moves relative to the threaded rod 6 to mesh with the transmission gear 26. When the transmission gear 26 meshes with the offset gear 8, the turntable 14 drives the pipe fitting to rotate, so that the telescopic welding head 2 telescopes close to the circumferentially rotating pipe fitting to weld the circumference of the pipe fitting. After the welding is completed, when the movable meshing frame 5 is controlled to move in the opposite direction, the elastic damping bending plate 151 generates resistance to the movement of the welded pipe fittings, so that the hinged support rods 13 loosen the pipe fittings, and the welded pipe fittings are detached from the outer edge rod 11 and the movable inner edge rod 10. Then, when the movable engaging frame 5 continues to move, the outer edge rod 11 and the movable inner edge rod 10 on the other side are reinserted into the two new pipe fittings located above the support base plate 4, pushing the pipe fittings gradually close to the supporting side ring 3 on the other side, so that only a large number of pipe fittings need to be loaded into the discharge barrel 22 in two rows, and the movable engaging frame 5 can automatically replace the pipe fittings to be welded during the reciprocating left and right movement, and complete the welding of a large number of pipe fittings.

[0033] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent welding device for pipe fittings, comprising a welding base (1) and two telescopic welding heads (2), characterized in that: Two supporting side rings (3) are fixed on the upper surface of the welding base (1); two supporting base plates (4) distributed front and rear are fixed on the upper surface of the welding base (1) and located between the two supporting side rings (3); a movable meshing frame (5) is arranged above the welding base (1) and located between the two supporting side rings (3); a threaded rod (6) is arranged above the welding base (1); the two supporting side rings (3) are rotatably sleeved on both ends of the threaded rod (6); the left and right ends of the threaded rod (6) and located between the two movable meshing frames (5) are both fixedly sleeved with external threaded cylinders (7); and the outer surfaces of the two external threaded cylinders (7) are both threadedly sleeved with offset gears (8). The ends of the two offset gears (8) that are away from each other are elastically connected to the ends of the two external threaded tubes (7) that are away from each other. The movable meshing frame (5) is threadedly sleeved on the outer surface of the threaded rod (6). The left and right sides of the movable meshing frame (5) are rotatably plugged with end plates (9). The two end plates (9) are elastically connected to the upper end of the movable meshing frame (5). The sides of the two end plates (9) that are away from each other are installed with a force-bearing structure (17). The sides of the two end plates (9) that are away from each other are provided with movable inner edge rods (10). The two ends of each movable inner edge rod (10) are slidably sleeved with outer edge rods (11). The outer edge rods (11) and the adjacent movable inner edge rods ( 10) elastically connected, the sides of the two end plates (9) that are away from each other are fixed to the adjacent outer edge rods (11), a plurality of push rods (12) are fixed at the middle position of each movable inner edge rod (10), and a hinged support rod (13) is provided on the left and right sides of each push rod (12), and the hinged support rod (13) is elastically rotatably connected to the adjacent outer edge rod (11), and the upper ends of the two supporting side rings (3) that are close to each other are rotatably connected to a rotating disk (14), the rotating disk (14) is elastically connected to the adjacent supporting side ring (3), the rotating disk (14) and the end plate (9) are coaxially arranged, and the sides of the two rotating disks (14) that are close to each other are installed with an elastic damping structure (15), the outer edge rod (11) is located between the two elastic damping structures (15), the front of the two offset gears (8) are meshed with long tooth columns (18), a power long shaft (16) is arranged above the welding base (1), the two supporting side rings (3) are rotatably sleeved on the outer surface of the power long shaft (16), a transmission gear (26) is arranged above the ends of the two offset gears (8) that are away from each other, an outer tooth ring (20) is meshed above the transmission gear (26), and the outer tooth ring (20) is fixedly sleeved on the outer surface of the adjacent turntable (14), and a stopper shaft (19) is elastically slidably penetrated at the axis of the two supporting side rings (3) that are close to each other; A horizontal telescopic control structure (21) is fixed above the two supporting side rings (3); the ends of the two horizontal telescopic control structures (21) that are away from each other are respectively connected to the sides of the two supporting side rings (3) that are away from each other; the two telescopic welding heads (2) are located between the two supporting side rings (3); the upper ends of the two telescopic welding heads (2) are respectively connected to the telescopic ends of the two horizontal telescopic control structures (21); and a material discharge barrel (22) is fixed to the upper surface of one of the two supporting base plates (4).

2. The intelligent welding device for pipe fittings according to claim 1, characterized in that: The number of push rods (12) connected to the same movable inner edge rod (10) is an even number, the push rods (12) connected to the same movable inner edge rod (10) are set to have two lengths, the lengths between each two adjacent outer edge rods (11) connected to the same movable inner edge rod (10) are different, the distances between the two ends of each push rod (12) and the adjacent hinged support rods (13) are equal, and the connection between the push rod (12) and the movable inner edge rod (10) is located in the middle of the push rod (12).

3. The intelligent welding device for pipe fittings according to claim 1, characterized in that: The horizontal telescopic control structure (21) comprises a horizontal suspension rod (211) and a power telescopic rod (212); the upper end of the telescopic welding head (2) is slidably connected to the horizontal suspension rod (211); the horizontal suspension rod (211) is fixed to an adjacent supporting side ring (3); the horizontal suspension rod (211) is fixedly sleeved on a fixed end of the power telescopic rod (212); and the upper end of the telescopic welding head (2) is fixed to the telescopic end of the power telescopic rod (212).

4. The intelligent welding device for pipe fittings according to claim 1, characterized in that: The force-bearing structure (17) comprises a square frame (171) and a movable contact plate (172); the square frame (171) is slidably sleeved on the outer surface of the movable contact plate (172); the square frame (171) is fixed to an adjacent end plate (9); the lower end of the movable contact plate (172) is notched; and an outer edge rod (11) connected to the end plate (9) is located inside the notch of the adjacent movable contact plate (172).

5. The intelligent welding device for pipe fittings according to claim 1, characterized in that: The elastic damping structure (15) comprises a plurality of elastic damping bent plates (151); the distance between the middle portion of the elastic damping bent plates (151) and the axis of the turntable (14) is smaller than the distance between the two ends of the elastic damping bent plates (151) and the axis of the turntable (14); the plurality of elastic damping bent plates (151) are fixed to adjacent turntables (14); and the plurality of elastic damping bent plates (151) fixed to the same turntable (14) are evenly distributed in a circular array around the axis of the turntable (14).

6. The intelligent welding device for pipe fittings according to claim 1, characterized in that: The minimum length between the mutually approaching sides of the two offset gears (8) and the mutually distant sides of the two transmission gears (26) is equal to the length of the long tooth column (18), and the offset gears (8) and the adjacent transmission gears (26) are arranged in a left-right offset manner.

7. The intelligent welding device for pipe fittings according to claim 1, characterized in that: Four slide plates (23) are fixed on the upper surface of the welding base (1) and located between the two supporting side rings (3). The two slide plates (23) located on the left and the two slide plates (23) located on the right of the four slide plates (23) are arranged in an eight-shaped pattern. The front-to-back width of the lower end of the movable meshing frame (5) is smaller than the gap width between two adjacent slide plates (23) arranged front and back.

8. The intelligent welding device for pipe fittings according to claim 1, characterized in that: The upper end of the support base plate (4) connected to the lower material barrel (22) is inclined, a plurality of stop rods (25) are fixed to the upper surface of the other support base plate (4), a partition plate (24) is fixedly inserted in the middle position inside the lower material barrel (22), a gap exists between the lower ends of the two support base plates (4), and the front-to-rear width of the lower end of the movable engaging frame (5) is smaller than the width of the gap between the lower ends of the two support base plates (4).

9. The intelligent welding device for pipe fittings according to claim 1, characterized in that: The outer edge rod (11) and the movable inner edge rod (10) are located above the support material bottom plate (4), and a plurality of push rods (12) connected to the same movable inner edge rod (10) are evenly distributed in a circular array around the axis of the movable inner edge rod (10), and the push rods (12) are arranged in parallel with the movable inner edge rod (10).

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