Metal pipe fitting electromagnetic pulse welding equipment based on dual-coil dual-drive

Abstract

The utility model discloses a metal pipe fitting electromagnetic pulse welding device based on double-coil dual-drive, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a supporting sleeve, the inner side of the supporting sleeve is fixedly connected with an outer coil, the inner side of the outer coil is fixedly connected with a magnetic collector, the inner side of the magnetic collector is provided with an outer drive pipe, and the outer drive pipe is provided with an inner drive pipe. A first insulating film is arranged on the inner side of the outer driving tube, an outer tube is arranged on the inner side of the first insulating film, an inner tube is arranged on the inner side of the outer tube, a second insulating film is arranged on the inner side of the inner tube, an inner driving tube is arranged on the inner side of the second insulating film, and an inner coil is arranged on the inner side of the inner driving tube. The top of the bottom plate is fixedly connected with a support. The utility model relates to metal pipe fitting electromagnetic pulse welding equipment based on double-coil double-drive. The metal pipe fitting electromagnetic pulse welding equipment has the characteristics that the welding efficiency is better, a welded pipe fitting is convenient to take out, and the cooling efficiency of a welded workpiece is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic pulse welding, in particular to a metal pipe electromagnetic pulse welding device based on double coils and double drives. Background Art

[0002] Electromagnetic pulse welding is a type of electromagnetic forming process, which belongs to the application of pulse power technology in material processing. It can overcome the differences in the physical and chemical properties of dissimilar metals and use electromagnetic force to form a metallurgical bond. At present, electromagnetic pulse welding pipe fittings mostly use a spiral coil in conjunction with a magnetic collector. For low-conductivity and difficult-to-deform metal pipe fittings (such as zirconium, stainless steel, etc.), their low conductivity and high deformation resistance make it difficult to induce a sufficiently large Lorentz force. Welding can only be achieved by significantly increasing the discharge energy. Even if the welding is successful, it may cause the inner tube to shrink and deform, making it difficult to remove the support tube. After welding, the workpiece is often cooled and dissipated by natural cooling, and the heat dissipation efficiency is insufficient, affecting the welding efficiency. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0003] The purpose of the utility model is to provide a metal pipe electromagnetic pulse welding device based on double coils and double drives in order to solve the above problems, thereby solving the problems mentioned in the background technology.

[0004] In order to solve the above problems, the utility model provides a technical solution:

[0005] A metal pipe electromagnetic pulse welding device based on dual-coil dual-drive, comprising a base plate, a support sleeve fixedly connected to the top of the base plate, an outer coil fixedly connected to the inner side of the support sleeve, a magnetic collector fixedly connected to the inner side of the outer coil, an outer driving tube arranged on the inner side of the magnetic collector, a first insulating film arranged on the inner side of the outer driving tube, an outer tube arranged on the inner side of the first insulating film, an inner tube arranged on the inner side of the outer tube, a second insulating film arranged on the inner side of the inner tube, an inner driving tube arranged on the inner side of the inner tube, an inner coil arranged on the inner side of the inner driving tube, a bracket fixedly connected to the top of the base plate, a box fixedly connected to the top of the bracket, a cooling mechanism arranged on the box, an adjusting mechanism arranged on the cooling mechanism, and an anti-blocking mechanism arranged on the box.

[0006] Preferably, the cooling mechanism includes an air pump, the top of the box is fixedly connected with the air pump, the left end of the air pump is provided with an exhaust hose, the outside of the exhaust hose is fixedly connected with a connecting pipe, the connecting pipe is slidably connected to the bracket, the bottom of the connecting pipe is fixedly connected with a deflector, the outside of the deflector is fixedly connected with a handle, the inside of the box is slidably sleeved with a connecting plate, the inside of the connecting plate is provided with a filter, and the right end of the box is fixedly connected with an air inlet. When welding is completed, the air pump is started, and the air pump sucks the inside of the box through the suction port, so that a negative pressure state is formed inside the box, and then the outside can be sucked through the air inlet, so that gas enters the inside of the box, and then dust and impurities in the air can be filtered under the action of the filter, and then the gas is input into the inside of the connecting pipe through the exhaust hose, and finally the gas is blown out through the deflector, which can be used to blow and dissipate heat to the workpiece after welding, accelerate the forming efficiency and improve the welding efficiency.

[0007] Preferably, a suction port is provided at the bottom of the air pump, and the suction port is fixedly connected to the box body. By designing the suction port, suction can be conducted inside the box body.

[0008] Preferably, the adjustment mechanism includes a groove, the connecting tube is provided with a groove inside, a ball is movably sleeved inside the groove, a fixed seat is movably sleeved outside the ball, the fixed seat is slidably connected to the connecting tube, the fixed seat is fixedly connected to the bracket, a sliding seat is movably sleeved outside the ball, the sliding seat is slidably connected to the fixed seat, a slider is fixedly connected to the top of the sliding seat, the slider is slidably connected to the fixed seat, a fixed rod is slidably sleeved inside the slider, the fixed rod is fixedly connected to the fixed seat, and a first spring is arranged on the outside of the fixed rod. When the height of the air deflector needs to be adjusted, the handle is pulled down, and the handle drives the air deflector downward, and the air deflector drives the connecting pipe downward, and the connecting pipe and the ball bearing slide relative to each other, and the arc surface of the groove of the connecting pipe squeezes the ball bearing, so that the ball bearing is squeezed and moves horizontally, and the ball bearing drives the sliding seat and the slider to move horizontally, and the slider can slide along the fixed rod, and the slider will squeeze the first spring, so that the ball bearing and the groove can be separated, and as the connecting pipe moves, the ball bearing will be reset and inserted into the groove at another position under the elastic action of the first spring, and the relative position of the connecting pipe and the fixed seat can be adjusted, so that the height of the air deflector can be flexibly adjusted, and the blowing position can be adjusted conveniently.

[0009] Preferably, the number of the grooves is multiple, and the multiple grooves are evenly distributed inside the connecting pipe. By designing multiple grooves, the ball bearings can slide into the grooves at different positions.

[0010] Preferably, one end of the first spring is fixedly connected to the slider, and the other end of the first spring is fixedly connected to the fixing seat. By designing the first spring, the force of the first spring can act on the slider.

[0011] Preferably, the anti-blocking mechanism includes a motor, a motor is fixedly connected to the outside of the box, the output end of the motor is rotatably connected to the box, a rotating shaft is fixedly connected to the outside of the motor output end, a first bevel gear is fixedly connected to the outside of the rotating shaft, a rotating rod is rotatably connected to the inside of the box via a bearing, a top block is fixedly connected to the outside of the rotating rod, a protrusion is in contact with the outside of the top block, the protrusion is fixedly connected to a connecting plate, a guide rod is slidably sleeved inside the connecting plate, a second spring is provided on the outside of the guide rod, a fixed block is fixedly connected to the outside of the guide rod, and the fixed block is fixedly connected to the box. During the gas filtration process, the motors work simultaneously, the output end of the motor will drive the rotating shaft and the first bevel gear to rotate, the first bevel gear will drive the second bevel gear to rotate, the second bevel gear will drive the rotating rod to rotate, the rotating rod will drive the top block to rotate, the top block will rotate to squeeze the protrusion, the protrusion will drive the connecting plate to move right, the connecting plate will slide along the guide rod, the connecting plate will squeeze the second spring, when the top block is separated from the protrusion, the connecting plate will be reset under the elastic action of the second spring, and the continuous rotation of the motor can realize the horizontal shaking of the filter screen, which can avoid the blockage of the filter screen affecting the air permeability.

[0012] Preferably, a sealing ring is fixedly connected inside the box, and the sealing ring is rotatably connected to the output end of the motor. By designing the sealing ring, the connection between the output end of the motor and the box can be sealed.

[0013] Preferably, the outer side of the first bevel gear is meshed with a second bevel gear, and the second bevel gear is fixedly sleeved on the outer side of the rotating rod. By designing the meshing of the first bevel gear and the second bevel gear, the rotation of the rotating rod can be achieved.

[0014] Preferably, one end of the second spring is fixedly connected to the connecting plate, and the other end of the second spring is fixedly connected to the fixing block. By designing the second spring, the force of the second spring can act on the connecting plate.

[0015] The beneficial effects of the utility model are as follows: the utility model relates to a metal pipe electromagnetic pulse welding device based on double coils and double drives, which has the characteristics of better welding efficiency, convenient removal of welded pipes and high cooling efficiency of workpieces after welding. In specific use, compared with the traditional metal pipe electromagnetic pulse welding device based on double coils and double drives, the metal pipe electromagnetic pulse welding device based on double coils and double drives has the following beneficial effects:

[0016] First, the inner coil and the outer coil work together to make the two workpieces collide with each other, which has a better welding effect and will not make it difficult to remove the support tube due to the shrinkage and deformation of the inner tube. The electromagnetic pulse driven welding method is used to use metal pipes with higher conductivity and lower deformation resistance as driving pipes. The induction deformation in the transient pulse magnetic field drives the low-conductivity and difficult-to-deform metal pipes to move, thereby achieving welding with lower energy.

[0017] Secondly, through the action of the air pump, air can be blown to the outside through the air deflector, and the workpiece after welding can be cooled by blowing air, thereby accelerating the forming efficiency and improving the welding efficiency. The height of the air deflector can be flexibly adjusted, which is convenient for adjusting the blowing position. The gas blown out of the air deflector can be filtered under the action of the filter to prevent dust and impurities from falling into the inside of the welding workpiece. At the same time, under the action of the motor, the motor can drive the rotating rod to drive the top block to rotate when working, and the top block can squeeze the convex block. With the elastic action of the second spring, the filter can be shaken in the horizontal direction to prevent the filter from being blocked and affecting the air permeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] For ease of explanation, the present invention is described in detail by the following specific implementations and drawings.

[0019] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 A three-dimensional diagram of the outer coil structure;

[0021] Figure 3 For this utility model Figure 2 A three-dimensional cross-sectional view of

[0022] Figure 4 For this utility model Figure 1 A front cross-sectional view of a fixing seat;

[0023] Figure 5 For this utility model Figure 4 A magnified image of point A;

[0024] Figure 6 For this utility model Figure 1 A front cross-sectional view of the box;

[0025] Figure 7 For this utility model Figure 6 Enlarged view of point B.

[0026] In the figure: 1, bottom plate; 2, support sleeve; 3, outer coil; 4, magnetic collector; 5, outer drive tube; 6, first insulating film; 7, cooling mechanism; 8, adjustment mechanism; 9, anti-blocking mechanism; 10, outer tube; 11, inner tube; 12, second insulating film; 13, inner drive tube; 14, inner coil; 15, bracket; 16, box; 71, air pump; 72, exhaust hose; 73, suction port; 74, connecting plate; 75, filter; 76, Air inlet; 77, connecting pipe; 78, air deflector; 79, handle; 81, groove; 82, ball bearing; 83, fixed seat; 84, sliding seat; 85, slider; 86, fixed rod; 87, first spring; 91, motor; 92, sealing ring; 93, rotating shaft; 94, first bevel gear; 95, second bevel gear; 96, rotating rod; 97, top block; 98, protrusion; 99, guide rod; 991, second spring; 992, fixed block. DETAILED DESCRIPTION

[0027] like Figure 1-7 As shown, this specific implementation adopts the following technical solutions:

[0028] Example:

[0029] A metal pipe electromagnetic pulse welding device based on double-coil double drive, comprising a base plate 1, a support sleeve 2 is fixedly connected to the top of the base plate 1, an outer coil 3 is fixedly connected to the inner side of the support sleeve 2, a magnetic collector 4 is fixedly connected to the inner side of the outer coil 3, an outer driving tube 5 is arranged on the inner side of the magnetic collector 4, a first insulating film 6 is arranged on the inner side of the outer driving tube 5, an outer tube 10 is arranged on the inner side of the first insulating film 6, an inner tube 11 is arranged on the inner side of the outer tube 10, a second insulating film 12 is arranged on the inner side of the inner tube 11, an inner driving tube 13 is arranged on the inner side of the second insulating film 12, an inner coil 14 is arranged on the inner side of the inner driving tube 13, a bracket 15 is fixedly connected to the top of the base plate 1, a box 16 is fixedly connected to the top of the bracket 15, a cooling mechanism 7 is arranged on the box 16, an adjusting mechanism 8 is arranged on the cooling mechanism 7, and an anti-blocking mechanism 9 is arranged on the box 16.

[0030] Among them, the cooling mechanism 7 includes an air pump 71, the top of the box body 16 is fixedly connected to the air pump 71, the left end of the air pump 71 is provided with an exhaust hose 72, the bottom of the air pump 71 is provided with a suction port 73, the suction port 73 is fixedly connected to the box body 16, and the inside of the box body 16 can be sucked by designing the suction port 73, the outside of the exhaust hose 72 is fixedly connected to a connecting pipe 77, the connecting pipe 77 is slidably connected to the bracket 15, the bottom of the connecting pipe 77 is fixedly connected to a guide cover 78, the outside of the guide cover 78 is fixedly connected to a handle 79, the inside of the box body 16 is slidably sleeved with a connecting plate 74, the inside of the connecting plate 74 is provided with a filter screen 75, and the right end of the box body 16 is fixedly connected to an air inlet 76. When welding is completed, the air pump 71 is started. The air pump 71 sucks the inside of the box 16 through the suction port 73, so that a negative pressure state is formed inside the box 16, and then the outside can be sucked through the air inlet 76, so that the gas enters the inside of the box 16, and then the dust and impurities in the air can be filtered under the action of the filter 75. Then the gas is input into the connecting pipe 77 through the exhaust hose 72, and finally the gas is blown out through the guide cover 78, which can be used to blow and dissipate heat for the workpiece after welding, accelerate the forming efficiency and improve the welding efficiency.

[0031] The adjusting mechanism 8 includes a groove 81, a groove 81 is provided inside the connecting tube 77, a ball 82 is movably sleeved inside the groove 81, the number of the grooves 81 is multiple, and the multiple grooves 81 are evenly distributed inside the connecting tube 77. By designing multiple grooves 81, the ball 82 can slide into the grooves 81 at different positions, and a fixed seat 83 is movably sleeved outside the ball 82. The fixed seat 83 is slidably connected to the connecting tube 77, and the fixed seat 83 is fixedly connected to the bracket 15. The outer side of the ball 82 is movably sleeved A sliding seat 84 is slidably connected to a fixed seat 83, a sliding block 85 is fixedly connected to the top of the sliding seat 84, the sliding block 85 is slidably connected to the fixed seat 83, a fixing rod 86 is slidably sleeved inside the sliding block 85, the fixing rod 86 is fixedly connected to the fixed seat 83, a first spring 87 is arranged on the outer side of the fixing rod 86, one end of the first spring 87 is fixedly connected to the sliding block 85, and the other end of the first spring 87 is fixedly connected to the fixed seat 83. By designing the first spring 87, the action force of the first spring 87 can act on the sliding block 85. When the height of the air deflector 78 needs to be adjusted, the handle 79 is pulled down, and the handle 79 drives the air deflector 78 to move downward, and the air deflector 78 drives the connecting tube 77 to move downward, and the connecting tube 77 and the ball 82 slide relative to each other, and the arc surface of the groove 81 of the connecting tube 77 squeezes the ball 82, so that the ball 82 is squeezed and moves horizontally, and the ball 82 drives the sliding seat 84 and the slider 85 to move horizontally, and the slider 85 can slide along the fixing rod 86, and the slider 85 squeezes the first spring 87, so that the ball 82 can be separated from the groove 81. As the connecting tube 77 moves, the ball 82 will be reset and inserted into the groove 81 at another position under the elastic action of the first spring 87, and the relative position of the connecting tube 77 and the fixing seat 83 can be adjusted, so that the height of the air deflector 78 can be flexibly adjusted, and the blowing position can be adjusted conveniently.

[0032] Among them, the anti-blocking mechanism 9 includes a motor 91, the outer side of the box body 16 is fixedly connected with the motor 91, the output end of the motor 91 is rotatably connected to the box body 16, the inside of the box body 16 is fixedly connected with a sealing ring 92, the sealing ring 92 is rotatably connected to the output end of the motor 91, and the connection between the output end of the motor 91 and the box body 16 can be sealed by designing the sealing ring 92, the outer side of the output end of the motor 91 is fixedly connected with a rotating shaft 93, the outer side of the rotating shaft 93 is fixedly connected with a first bevel gear 94, the outer side of the first bevel gear 94 is meshed with a second bevel gear 95, and the second bevel gear 95 is fixedly sleeved on the outer side of the rotating rod 96, and the meshing of the first bevel gear 94 and the second bevel gear 95 can be designed to realize the rotating rod 96 rotates, the interior of the box body 16 is rotatably connected with a rotating rod 96 through a bearing, the outer side of the rotating rod 96 is fixedly connected with a top block 97, the outer side of the top block 97 contacts with a protrusion 98, the protrusion 98 is fixedly connected to the connecting plate 74, the inner side of the connecting plate 74 is slidably sleeved with a guide rod 99, the outer side of the guide rod 99 is provided with a second spring 991, one end of the second spring 991 is fixedly connected to the connecting plate 74, and the other end of the second spring 991 is fixedly connected to a fixed block 992. By designing the second spring 991, the force of the second spring 991 can act on the connecting plate 74, the outer side of the guide rod 99 is fixedly connected with a fixed block 992, and the fixed block 992 is fixedly connected to the box body 16. During the gas filtering process, the motor 91 works simultaneously, and the output end of the motor 91 will drive the rotating shaft 93 and the first bevel gear 94 to rotate, the first bevel gear 94 will drive the second bevel gear 95 to rotate, the second bevel gear 95 will drive the rotating rod 96 to rotate, the rotating rod 96 will drive the top block 97 to rotate, the top block 97 will rotate to squeeze the protrusion 98, the protrusion 98 will drive the connecting plate 74 to move right, the connecting plate 74 will slide along the guide rod 99, the connecting plate 74 will squeeze the second spring 991, when the top block 97 is separated from the protrusion 98, the connecting plate 74 will be reset under the elastic action of the second spring 991, and the continuous rotation of the motor 91 can realize the shaking of the filter screen 75 in the horizontal direction, and the blockage of the filter screen 75 affecting the air permeability can be avoided.

[0033] The use state of the utility model is as follows: when in use, the pulse generator discharges to the outer coil 3 and the inner coil 14 at the same time, generating a transient electromagnetic field in space, the outer driving tube 5 feels the transient magnetic field generated by the outer coil 3 and the magnetic collector 4 and receives an inward Lorentz force, and the inner driving tube 13 feels the transient magnetic field generated by the inner coil 14 and receives an outward Lorentz force (due to the shielding effect of the outer driving tube 5 and the inner driving tube 13, the magnetic field received by the outer tube 10 and the inner tube 11 is very small and can be ignored); the outer tube 10 receives the inward pressure from the outer driving tube 5, and the inner tube 11 receives the inward pressure from the outer driving tube 5. Due to the outward pressure exerted by the inner driving tube 13, the four pipes are all plastically deformed until the inner tube 11 collides with the outer tube 10. This method uses the synergistic effect of the inner coil 14 and the outer coil 3 to make the two workpieces collide with each other, so the welding effect is better and the support tube will not be difficult to remove due to the shrinkage and deformation of the inner tube 11. The electromagnetic pulse driven welding method is adopted, and the metal pipe with higher conductivity and smaller deformation resistance is used as the driving tube. The induced deformation in the transient pulse magnetic field drives the low-conductivity and difficult-to-deform metal pipe to move, thereby achieving welding with lower energy.

[0034] When welding is completed, the air pump 71 is started. The air pump 71 sucks the inside of the box 16 through the suction port 73, so that a negative pressure state is formed inside the box 16, and then the outside can be sucked through the air inlet 76, so that the gas enters the inside of the box 16, and then the dust and impurities in the air can be filtered under the action of the filter 75. Then the gas is input into the connecting pipe 77 through the exhaust hose 72, and finally the gas is blown out through the guide cover 78, which can be used to blow and dissipate heat for the workpiece after welding, accelerate the forming efficiency and improve the welding efficiency.

[0035] When the height of the air deflector 78 needs to be adjusted, the handle 79 is pulled down, and the handle 79 drives the air deflector 78 to move downward, and the air deflector 78 drives the connecting tube 77 to move downward, and the connecting tube 77 and the ball 82 slide relative to each other, and the arc surface of the groove 81 of the connecting tube 77 squeezes the ball 82, so that the ball 82 is squeezed and moves horizontally, and the ball 82 drives the sliding seat 84 and the slider 85 to move horizontally, and the slider 85 can slide along the fixing rod 86, and the slider 85 squeezes the first spring 87, so that the ball 82 can be separated from the groove 81. As the connecting tube 77 moves, the ball 82 will be reset and inserted into the groove 81 at another position under the elastic action of the first spring 87, and the relative position of the connecting tube 77 and the fixing seat 83 can be adjusted, so that the height of the air deflector 78 can be flexibly adjusted, and the blowing position can be adjusted conveniently.

[0036] During the gas filtering process, the motor 91 works simultaneously, and the output end of the motor 91 will drive the rotating shaft 93 and the first bevel gear 94 to rotate, the first bevel gear 94 will drive the second bevel gear 95 to rotate, the second bevel gear 95 will drive the rotating rod 96 to rotate, the rotating rod 96 will drive the top block 97 to rotate, the top block 97 will rotate to squeeze the protrusion 98, the protrusion 98 will drive the connecting plate 74 to move right, the connecting plate 74 will slide along the guide rod 99, the connecting plate 74 will squeeze the second spring 991, when the top block 97 is separated from the protrusion 98, the connecting plate 74 will be reset under the elastic action of the second spring 991, and the continuous rotation of the motor 91 can realize the shaking of the filter screen 75 in the horizontal direction, and the blockage of the filter screen 75 affecting the air permeability can be avoided.

[0037] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A metal pipe electromagnetic pulse welding device based on dual coils and dual drives, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to a support sleeve (2), the inner side of the support sleeve (2) is fixedly connected to an outer coil (3), the inner side of the outer coil (3) is fixedly connected to a magnetic collector (4), the inner side of the magnetic collector (4) is provided with an outer driving tube (5), the inner side of the outer driving tube (5) is provided with a first insulating film (6), the inner side of the first insulating film (6) is provided with an outer tube (10), the inner side of the outer tube (10) is provided with an inner tube (11), the inner side of the inner tube (11) is provided with a A second insulating film (12) is arranged on the side thereof, an inner driving tube (13) is arranged on the inner side of the second insulating film (12), an inner coil (14) is arranged on the inner side of the inner driving tube (13), a bracket (15) is fixedly connected to the top of the bottom plate (1), a box (16) is fixedly connected to the top of the bracket (15), a cooling mechanism (7) is arranged on the box (16), an adjusting mechanism (8) is arranged on the cooling mechanism (7), and an anti-blocking mechanism (9) is arranged on the box (16).

2. The metal pipe electromagnetic pulse welding equipment based on dual coils and dual drives according to claim 1 is characterized in that: The cooling mechanism (7) comprises an air pump (71), the top of the box body (16) is fixedly connected to the air pump (71), the left end of the air pump (71) is provided with an exhaust hose (72), the outer side of the exhaust hose (72) is fixedly connected to a connecting pipe (77), the connecting pipe (77) is slidably connected to the bracket (15), the bottom of the connecting pipe (77) is fixedly connected to a deflector (78), the outer side of the deflector (78) is fixedly connected to a handle (79), the interior of the box body (16) is slidably sleeved with a connecting plate (74), the interior of the connecting plate (74) is provided with a filter (75), and the right end of the box body (16) is fixedly connected to an air inlet (76).

3. The metal pipe electromagnetic pulse welding equipment based on double coils and double drives according to claim 2 is characterized in that: The bottom of the air pump (71) is provided with a suction port (73), and the suction port (73) is fixedly connected to the box body (16).

4. The metal pipe electromagnetic pulse welding equipment based on dual coils and dual drives according to claim 2 is characterized in that: The adjusting mechanism (8) comprises a groove (81), the interior of the connecting tube (77) is provided with a groove (81), the interior of the groove (81) is movably sleeved with a ball bearing (82), the outer side of the ball bearing (82) is movably sleeved with a fixed seat (83), the fixed seat (83) is slidably connected to the connecting tube (77), the fixed seat (83) is fixedly connected to the bracket (15), the outer side of the ball bearing (82) is movably sleeved with a sliding seat (84), the sliding seat (84) is slidably connected to the fixed seat (83), the top of the sliding seat (84) is fixedly connected with a slider (85), the slider (85) is slidably connected to the fixed seat (83), the interior of the slider (85) is slidably sleeved with a fixing rod (86), the fixing rod (86) is fixedly connected to the fixing seat (83), and a first spring (87) is arranged on the outer side of the fixing rod (86).

5. The metal pipe electromagnetic pulse welding equipment based on double coils and double drives according to claim 4 is characterized in that: There are a plurality of grooves (81), and the plurality of grooves (81) are evenly distributed inside the connecting pipe (77).

6. The metal pipe electromagnetic pulse welding equipment based on double coils and double drives according to claim 4 is characterized in that: One end of the first spring (87) is fixedly connected to the slider (85), and the other end of the first spring (87) is fixedly connected to the fixing seat (83).

7. The metal pipe electromagnetic pulse welding equipment based on double coils and double drives according to claim 2 is characterized in that: The anti-blocking mechanism (9) comprises a motor (91), the outer side of the housing (16) is fixedly connected with the motor (91), the output end of the motor (91) is rotatably connected to the housing (16), the outer side of the output end of the motor (91) is fixedly connected with a rotating shaft (93), the outer side of the rotating shaft (93) is fixedly connected with a first bevel gear (94), the interior of the housing (16) is rotatably connected with a rotating rod (96) through a bearing, the outer side of the rotating rod (96) is fixedly connected with a top block (97), the outer side of the top block (97) is in contact with a convex block (98), the convex block (98) is fixedly connected to a connecting plate (74), the interior of the connecting plate (74) is slidably sleeved with a guide rod (99), the outer side of the guide rod (99) is provided with a second spring (991), the outer side of the guide rod (99) is fixedly connected with a fixed block (992), and the fixed block (992) is fixedly connected to the housing (16).

8. The metal pipe electromagnetic pulse welding equipment based on dual coils and dual drives according to claim 1 is characterized in that: A sealing ring (92) is fixedly connected to the interior of the box body (16), and the sealing ring (92) is rotatably connected to the output end of the motor (91).

9. The metal pipe electromagnetic pulse welding equipment based on dual coils and dual drives according to claim 7 is characterized in that: The outer side of the first bevel gear (94) is meshed with a second bevel gear (95), and the second bevel gear (95) is fixedly sleeved on the outer side of the rotating rod (96).

10. The metal pipe electromagnetic pulse welding equipment based on double coils and double drives according to claim 7, characterized in that: One end of the second spring (991) is fixedly connected to the connecting plate (74), and the other end of the second spring (991) is fixedly connected to the fixing block (992).

Images