Oil pipe welding device with quick positioning structure

Abstract

The invention discloses an oil pipe welding device with a rapid positioning structure, and particularly relates to the technical field of oil pipe welding. The oil pipe welding device comprises an operation table, a positioning assembly is fixedly connected to the middle of the upper end of the operation table, and air suction assemblies are symmetrically and fixedly connected to the upper end of the operation table; the upper end of the operation table located on the front sides of the two pushing assemblies is fixedly connected with a welding assembly, and the front side of the upper end of the operation table is fixedly connected with a fixing assembly. According to the oil pipe welding device with the rapid positioning structure, through cooperation of a rack, a fourth gear and other structures, automatic switching of welding stations is achieved, in the rotating process, through cooperation of a second air bag and other structures, a resonant cavity can be extruded, and after rotation is finished, through cooperation of a first rotating roller and a third spring, the welding station can be automatically switched; and the shrunk resonant cavity and the fixing column generate high-frequency vibration, so that the magnetic attraction seat and the welded oil pipe vibrate at the same time, welding residual stress is eliminated, and meanwhile, surface damage caused by a traditional hammering process is avoided through non-contact vibration treatment.

Description

Technical Field

[0001] The invention relates to the technical field of oil pipe welding, and in particular to an oil pipe welding device with a rapid positioning structure. Background Art

[0002] Oil pipes refer to pipes used to transport liquids (such as hydraulic oil, fuel, lubricating oil, etc.). Their main function is to withstand system pressure and ensure sealed transmission of fluids. When welding oil pipes, the welding method must be selected based on the pressure, medium, installation environment and welding process.

[0003] Chinese patent announcement number CN213163619U discloses an oil pipe laser automatic welding device, comprising a top plate, a movable plate connected to the lower end of the electric push rod, a connecting seat movably connected to the side end of the movable plate, a sliding seat fixedly connected to the outer end of the connecting seat, a guide rail is arranged on the front of the side plate, the sliding seat is slidably connected to the guide rail, a laser seat is movably connected to the center of the lower end surface of the movable plate, a laser welding head is fixedly connected to the lower end of the laser seat, a rack is connected between the bottom connecting member and the top connecting member, an anti-slip cylinder is arranged on the outer side wall of the rack, a fixing frame is fixedly installed on the lower end surface of the bottom plate, and a walking wheel is rotatably connected to the inside of the fixing frame. The patent can further improve the stability by arranging a reinforcing plate and a positioning column, and can improve the smoothness and practicality of the device when the sliding seat slides on the guide rail, and the various components are connected by threads, which is convenient for disassembly and assembly, conducive to inspection and maintenance, and can ensure the quality of welding.

[0004] However, the above device cannot achieve the effect of automatically adjusting the welding position and simultaneously striking the weldment to generate high-frequency vibration during operation. Summary of the invention

[0005] The main purpose of the present invention is to provide an oil pipe welding device with a rapid positioning structure, which can effectively solve the problem that it is impossible to automatically adjust the welding position while being able to knock the weldment to generate high-frequency vibration.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A oil pipe welding device with a quick positioning structure comprises an operating table, a positioning component is fixedly connected to the middle part of the upper end of the operating table, an air suction component is symmetrically fixedly connected to the upper end of the operating table, a pushing component is symmetrically fixedly connected to the front side of the upper end of the operating table, a welding component is fixedly connected to the upper end of the operating table in front of the two pushing components, a fixing component is fixedly connected to the front side of the upper end of the operating table, and a transmission component is fixedly connected to the front side of the lower end of the operating table.

[0007] Preferably, a V-shaped guide rail is fixedly connected to the middle part of the upper end of the operating table, a rectangular guide rail is symmetrically fixedly connected to the middle part of the upper end of the operating table, a sliding groove is provided on the side of the two rectangular guide rails away from each other, an arc guide rail is fixedly connected to the side of the two rectangular guide rails away from each other, and a ring guide rail is fixedly connected to the front side of the upper end of the operating table.

[0008] Preferably, the positioning assembly includes a hydraulic cylinder 1 fixedly connected to the rear side of the upper end of the operating table, the output end of the hydraulic cylinder 1 is fixedly connected to a U-shaped plate, the upper end of the U-shaped plate is symmetrically fixedly connected to an L-shaped plate, the lower ends of the horizontal parts of the two L-shaped plates are respectively slidably connected to the upper ends of the matching rectangular guide rails, the two L-shaped plates are provided with vertical grooves on the sides away from each other, the upper ends of the two L-shaped plates are fixedly connected to the U-shaped grooves, the upper ends of the two L-shaped plates are fixedly connected to hydraulic cylinder 2 on the sides away from each other, the output ends of the two hydraulic cylinders 2 are fixedly connected to fixing rods, the two fixing rods are rotatably connected to clamping blocks at one end close to each other, the outer surfaces of the two fixing rods are fixedly connected to fixing rings, the two fixing rings are electrically connected to laser emission sensors at one end close to each other, and the lower ends of the two fixing rings are respectively slidably connected to the inner surfaces of the matching U-shaped grooves.

[0009] Preferably, a spring 1 is slidably connected to the inner surface of the vertical groove, an end of the spring 1 away from the L-shaped plate is fixedly connected to a push plate 1, a lower end of the push plate is rotatably connected to a push plate 2, the rear ends of the push plates 1 and 2 are commonly and fixedly connected to a sliding rod, and the outer surface of the spring 1 is in close contact with the upper surface of the arc guide rail.

[0010] Preferably, the suction assembly includes a fixed plate 1 fixedly connected to the middle part of the upper end of the operating table, a T-shaped plate is slidably connected to the inner surface of the slide groove, the fixed plate 1 and the T-shaped plate are jointly and fixedly connected to an airbag 1, a hose 1 is provided on the outer surface of the airbag 1, the end of the hose 1 away from the airbag 1 is fixedly connected to a hard tube, a plurality of nozzles 1 are fixedly connected to the front side of the outer surface of the hard tube, a plurality of springs 2 are fixedly connected to the rear end of the T-shaped plate, a plurality of springs 2 are fixedly connected to the rear ends of the springs 2, and a fixed plate 2 is fixedly connected to the lower end of the fixed plate 2 to the upper end of the operating table.

[0011] Preferably, an air inlet is opened on the outer surface of the airbag 1, a one-way valve 1 is fixedly connected to the outer surface of the air inlet, a one-way valve 2 is fixedly connected to the outer surface of the hose 1 at one end close to the airbag 1, and the outer surface of the hard tube is fixedly connected to the rear end of the clamp.

[0012] Preferably, the welding assembly includes a motor fixedly connected to the upper end of the operating table, the output end of the motor is fixedly connected to gear 2, the front end of gear 2 is transmission-connected to gear 1, the outer surfaces of gear 2 and gear 1 are meshed with a gear ring, the outer arc surface of the gear ring is slidably connected to the inner surface of the ring guide rail, and the rear end of the gear ring is fixedly connected to a laser welding head.

[0013] Preferably, the pushing assembly includes a hydraulic cylinder three fixedly connected to the upper end of the operating table, the output end of the hydraulic cylinder three is fixedly connected to an arc-shaped spray plate, the inner arc surface annular array of the arc-shaped spray plate has a plurality of nozzles two, and the outer arc surface of the arc-shaped spray plate is fixedly connected to a hose three.

[0014] Preferably, the transmission assembly includes a Z-shaped rod fixedly connected to the outer surface of the output end of the lower hydraulic cylinder three, a rack fixedly connected to the lower right end of the Z-shaped rod, a gear four meshing with the right end of the rack, a one-way rotating shaft fixedly connected to the inner surface of the gear four, a roller two fixedly connected to the inner surface of the one-way rotating shaft, the roller two is transmission-connected to the roller three, and a gear five is fixedly connected to the upper part of the outer surface of the roller three.

[0015] Preferably, the fixing assembly includes a fixing column rotatably connected to the upper end of the operating table, the middle of the outer surface of the fixing column is fixedly connected to a gear three, the outer surface of the gear three is meshed with a gear five, the upper end of the fixing column is fixedly connected to a magnetic suction seat, the lower side of the outer surface of the fixing column has four arc blocks in a circular array, the inner surface of the fixing column is provided with a cavity, the top wall and the bottom wall of the inner surface of the cavity are jointly fixedly connected to a resonance cavity, the front side of the lower end of the operating table is fixedly connected to an L-shaped seat, the upper end of the horizontal part of the L-shaped seat is fixedly connected to an airbag two, the outer surface of the airbag two is fixedly connected to a hose two, and the end of the hose two away from the airbag two is fixedly connected to two airbags three, the right side of the upper end of the Z-shaped rod is fixedly connected to an L-shaped push plate, the lower end of the horizontal part of the L-shaped push plate is fixedly connected to the outer surface of the airbag two, the upper end of the operating table is symmetrically fixedly connected to a rectangular plate, the two rectangular plates are fixedly connected to a spring three at one end close to each other, and the two springs are rotatably connected to a roller one at one end close to each other.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention forms a dynamic inert gas environment by continuously releasing argon through the driving component and cooperating with the active suction of the suction component, which effectively reduces the oxygen content in the weld area and reduces oxidation defects. At the same time, the reverse flow of argon can penetrate deep into the pipeline to achieve synchronous internal and external protection. After welding, the vibration effect triggered by the cooperation of the transmission component and the fixed component causes the weld metal to form a fine grain structure during the cooling process, thereby improving the mechanical properties of the weld.

[0017] The present invention achieves the effect of rapid clamping and positioning during the feeding process of the straight oil pipe by means of the cooperation of two laser emitting sensors and two hydraulic cylinder structures. When the straight oil pipe is moved in preparation for welding, the push plate two and the T-shaped plate can cooperate to squeeze the air bag one, and then the squeezed air bag one is reset to drive the air flow around the oil pipe, thereby achieving the effect of continuous external argon injection and internal negative pressure drainage of argon, forming an effect of internal and external double protective air curtains, and avoiding the adverse effects of oxygen on the weld during welding.

[0018] The present invention uses the coordination of structures such as a rack and a gear four to enable the magnetic seat to drive the welded oil pipe to rotate 90 degrees, thereby realizing automatic switching of welding stations. At the same time, during the rotation process, the airbag three can be expanded and squeezed by the airbag two to reduce the volume of the resonance cavity. During the rotation process, the arc block is also used to cooperate with the compression roller one and the spring three, so that after the rotation is completed, the reduced resonance cavity and the fixed column generate high-frequency vibration through the coordination of the roller one and the spring three, so that the magnetic seat and the welded oil pipe vibrate at the same time, thereby eliminating welding residual stress and improving the fatigue life of the weldment. At the same time, the non-contact vibration treatment avoids the damage to the surface caused by the traditional hammering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is another perspective overall structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the local structure of the present invention; Figure 4 It is a schematic diagram of the structure of the positioning component of the present invention; Figure 5 It is a schematic diagram of the operating structure of the positioning component of the present invention; Figure 6 It is a schematic diagram of the structure of the air intake assembly of the present invention; Figure 7 It is a schematic diagram of the welding assembly structure of the present invention; Figure 8 It is a schematic diagram of the structure of the driving component of the present invention; Fig. 9 It is a schematic diagram of the structure of the fixing assembly of the present invention; Fig.10 It is a schematic diagram of a partial cross-sectional structure of a fixing assembly of the present invention; Fig.11 It is a schematic diagram of the transmission assembly structure of the present invention.

[0020] In the figure: 1. operating table; 11. V-shaped guide rail; 12. rectangular guide rail; 121. slide groove; 122. arc guide rail; 13. ring guide rail; 2. positioning assembly; 21. hydraulic cylinder 1; 22. U-shaped plate; 23. L-shaped plate; 231. U-shaped groove; 232. vertical groove; 24. push plate 1; 241. slide rod; 242. spring 1; 25. push plate 2; 26. hydraulic cylinder 2; 27. fixing ring; 271. laser emission sensor; 28. fixing rod; 29. ​​clamping block; 3. suction assembly; 31. fixing plate 1; 32. air bag 1; 321. air inlet; 322. one-way valve 1; 323. one-way valve 2; 33. hose 1; 34. fixing plate 2; 35. spring 2; 36. T-shaped plate; 37. hard pipe; 3 71. Nozzle 1; 4. Welding assembly; 41. Motor; 42. Gear ring; 43. Gear 1; 44. Gear 2; 45. Laser welding head; 5. Fixing assembly; 51. Fixing column; 511. Arc block; 512. Resonance cavity; 52. Gear 3; 53. Magnetic seat; 54. L-shaped seat; 55. Airbag 2; 56. Hose 2; 57. Rectangular plate; 571. Spring 3; 572. Roller 1; 58. L-shaped push plate; 59. Airbag 3; 6. Pushing assembly; 61. Hydraulic cylinder 3; 62. Arc spray plate; 63. Nozzle 2; 64. Hose 3; 7. Transmission assembly; 71. Z-shaped rod; 72. Rack; 73. Gear 4; 731. One-way shaft; 74. Roller 2; 75. Roller 3; 76. Gear 5. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] Embodiment 1, as Figure 1-2 As shown, a tubing welding device with a quick positioning structure includes an operating table 1, a positioning component 2 is fixedly connected to the middle of the upper end of the operating table 1, a suction component 3 is symmetrically fixedly connected to the upper end of the operating table 1, a pushing component 6 is symmetrically fixedly connected to the front side of the upper end of the operating table 1, a welding component 4 is fixedly connected to the upper end of the operating table 1 located in front of the two pushing components 6, a fixing component 5 is fixedly connected to the front side of the upper end of the operating table 1, and a transmission component 7 is fixedly connected to the front side of the lower end of the operating table 1.

[0023] When welding the straight oil pipe and the L-shaped oil pipe, firstly, the L-shaped oil pipe is magnetically fixed by the fixing component 5, and then the two pushing components 6 are cooperated to continuously release argon in the welding area to create a rare gas atmosphere, and then the intermittent feeding device in the prior art is used to indirectly transport the straight oil pipe to the upper end of the operating table 1. When the straight oil pipe passes through the positioning component 2, the positioning component 2 is triggered to quickly clamp and position the straight oil pipe. Then the positioning component 2 clamps the straight oil pipe and moves it to the front side of the upper end of the operating table 1 to prepare for welding with the L-shaped oil pipe. In the process of the positioning component 2 clamping the straight oil pipe, the two suction components 3 are driven to operate. After the straight oil pipe moves to the welding position, the two suction components 3 cooperate to suck air backwards, so that the argon in the welding area passes through the gap between the L-shaped oil pipe and the straight oil pipe and enters the interior of the straight oil pipe, thereby reducing the oxygen content inside the straight oil pipe. Furthermore, the L-shaped oil pipe and the straight oil pipe are welded by the welding assembly 4. After the welding is completed, the two pushing assemblies 6 continue to spray argon gas to the welding area. At this time, the positioning assembly 2 cooperates to release the clamping and fixation of the straight oil pipe and reset it. Then the two pushing assemblies 6 move away from each other. In the process of the two pushing assemblies 6 moving away from each other, the pushing assembly 6, the transmission assembly 7 and the fixing assembly 5 located on the lower side cooperate to drive the welded oil pipe to rotate 90° clockwise, so that the unwelded end of the L-shaped oil pipe is aligned with the positioning assembly 2, ready for the loading and welding of the next straight oil pipe. In the process of the welded oil pipe being driven to rotate, the fixing assembly 5 can be knocked through the cooperation of the transmission assembly 7, so that the fixing assembly 5 generates high-frequency vibration, and the welded oil pipe vibrates at the same time, which promotes the refinement of the weld metal grains and improves the weld quality.

[0024] During the operation of this embodiment, by continuously releasing argon through the pushing component 6 and cooperating with the active suction of the suction component 3, a dynamic inert gas environment is formed, which effectively reduces the oxygen content in the weld area and reduces oxidation defects. At the same time, the reverse flow of argon can penetrate deep into the pipeline to achieve synchronous protection of the inside and outside. After welding is completed, through the cooperation of the transmission component 7 and the fixed component 5, the vibration effect triggered causes the weld metal to form a fine grain structure during the cooling process, thereby improving the mechanical properties of the weld.

[0025] Embodiment 2: Based on Embodiment 1, this embodiment is to achieve the effect of filling the inner and outer surfaces of the oil pipe with argon gas before welding the oil pipe.

[0026] See also Figure 3 A V-shaped guide rail 11 is fixedly connected to the middle part of the upper end of the operating platform 1, a rectangular guide rail 12 is symmetrically fixedly connected to the middle part of the upper end of the operating platform 1, a slide groove 121 is opened on the side of the two rectangular guide rails 12 away from each other, an arc guide rail 122 is fixedly connected to the side of the two rectangular guide rails 12 away from each other, and a ring guide rail 13 is fixedly connected to the front side of the upper end of the operating platform 1.

[0027] After the straight oil pipe is loaded by the indirect loading device in the prior art, the straight oil pipe slides forward along the inclined surface on the rear side of the upper end of the V-shaped guide rail 11, and the V-shaped guide rail 11 cooperates only to realize the supporting effect of the straight oil pipe. The shape of the V-shaped guide rail 11 does not affect the left and right or front and back movement of the straight oil pipe. At the same time, the inclined setting of the V-shaped guide rail 11 will not block or jam the sliding of the straight oil pipe. When preparing for loading, the two pushing components 6 cooperate to continuously spray argon gas into the welding area.

[0028] At the same time, the annular guide rail 13 cooperates with the welding assembly 4 to realize annular welding, and the two rectangular guide rails 12 cooperate with the positioning assembly 2 to prevent the positioning assembly 2 from being offset during the movement of the clamping straight oil pipe.

[0029] See also Figure 4-5 The positioning assembly 2 includes a hydraulic cylinder 1 21 fixedly connected to the rear side of the upper end of the operating table 1, the output end of the hydraulic cylinder 1 21 is fixedly connected to a U-shaped plate 22, the upper end of the U-shaped plate 22 is symmetrically fixedly connected to an L-shaped plate 23, the lower ends of the horizontal parts of the two L-shaped plates 23 are respectively slidably connected to the upper end of the adaptive rectangular guide rail 12, and the two L-shaped plates 23 are provided with vertical grooves 232 on the side away from each other, and the upper ends of the two L-shaped plates 23 are fixedly connected to the U-shaped grooves 231, and the upper ends of the two L-shaped plates 23 are fixedly connected to the side away from each other. The hydraulic cylinder 2 26 is fixedly connected to the output ends of the two hydraulic cylinders 26. The two fixed rods 28 are rotatably connected to a clamping block 29 at one end close to each other, and the outer surfaces of the two fixed rods 28 are fixedly connected to a fixing ring 27, and the two fixed rings 27 are electrically connected to a laser emission sensor 271 at one end close to each other, and the lower ends of the two fixing rings 27 are respectively slidably connected to the inner surface of the adaptive U-shaped groove 231.

[0030] The two laser emitting sensors 271 mentioned above are electrically connected to the external control terminal respectively. At the same time, the operation of the two laser emitting sensors 271 mentioned above is a conventional setting in the prior art. The two laser emitting sensors 271 can emit lasers and simultaneously receive and sense the lasers emitted by each other. When the laser is blocked, the two laser emitting sensors 271 cooperate through the control terminals in the prior art to stimulate the hydraulic cylinder 2 26 and make the two hydraulic cylinders 26 operate.

[0031] When the straight oil pipe slides forward to the middle of the two L-shaped plates 23 through the upper end of the V-shaped guide rail 11, the straight oil pipe will block the two laser emission sensors 271, making the two laser emission sensors 271 unable to sense each other. At this time, the two laser emission sensors 271 respectively stimulate the adapted hydraulic cylinder 26, so that the output end of the hydraulic cylinder 26 pushes the fixing rod 28 and the clamping block 29 toward the side close to the straight oil pipe. In the process of the fixing rod 28 being pushed, the fixing ring 27 is driven to slide along the inner surface of the U-shaped groove 231, and then the two clamping blocks 29 are rotated to a suitable angle to clamp the straight oil pipe, thereby stimulating the hydraulic cylinder 1 21, so that the output end of the hydraulic cylinder 1 21 pushes the U-shaped plate 22 forward. In the process of the U-shaped plate 22 being pushed forward, the two L-shaped plates 23 and other structures that clamp the straight oil pipe will move forward at the same time.

[0032] See also Figure 5 The inner surface of the vertical groove 232 is slidably connected with a spring 242, and the end of the spring 242 away from the L-shaped plate 23 is fixedly connected with a push plate 24, and the lower end of the push plate 24 is rotatably connected with a push plate 25. The rear ends of the push plates 124 and 25 are fixedly connected with a slide rod 241, and the outer surface of the spring 242 is in close contact with the upper surface of the arc guide rail 122.

[0033] The lower sides of the rear ends of the two push plates 24 are fixedly connected with stoppers.

[0034] When the two L-shaped plates 23 move forward, the spring 1 242 , the push plate 1 24 , and the push plate 2 25 move forward simultaneously through the cooperation between the vertical groove 232 and the spring 1 242 .

[0035] Similarly, during the forward movement of spring 1 242, it cooperates with the upper surface of the arc guide rail 122, thereby achieving the effect of sliding upward along the inner surface of the vertical groove 232 while the spring 1 242 and push plates 1 24 and 25 move forward. That is, when the output end of the hydraulic cylinder 1 21 pushes the L-shaped plate 23 and the U-shaped plate 22 forward, the spring 1 242 and push plates 1 24 and 25 will slide upward at the same time.

[0036] See also Figure 6The suction component 3 includes a fixed plate 31 fixedly connected to the middle part of the upper end of the operating table 1, a T-shaped plate 36 is slidably connected to the inner surface of the slide groove 121, the fixed plate 31 and the T-shaped plate 36 are jointly fixedly connected to an air bag 32, a hose 33 is arranged on the outer surface of the air bag 32, the end of the hose 33 away from the air bag 32 is fixedly connected to a hard pipe 37, a plurality of nozzles 371 are fixedly connected to the front side of the outer surface of the hard pipe 37, a plurality of springs 35 are fixedly connected to the rear end of the T-shaped plate 36, a fixed plate 34 is fixedly connected to the rear end of the plurality of springs 35, the lower end of the fixed plate 34 is fixedly connected to the upper end of the operating table 1, an air inlet 321 is provided on the outer surface of the air bag 32, a one-way valve 322 is fixedly connected to the outer surface of the air inlet 321, a one-way valve 323 is fixedly connected to the outer surface of the hose 33 close to the air bag 32, and the outer surface of the hard pipe 37 is fixedly connected to the rear end of the clamp 29.

[0037] The one-way valve 1 322 and the one-way valve 2 323 mentioned above are both conventional settings in the prior art. By cooperating with the one-way valve 1 322 and the air inlet 321, the gas inside the airbag 1 32 can only flow from the inside of the airbag 1 32 to the outside through the inner surface of the air inlet 321. Similarly, by cooperating with the one-way valve 2 323 and the hose 1 33, the gas inside the hose 1 33 can only enter the airbag 1 32 through the one-way valve 2 323.

[0038] In the process of the two push plates 1 24 and the push plate 2 25 being driven forward and moving upward at the same time, when the front end of the push plate 2 25 moves to be close to the rear end of the T-shaped plate 36, the push plates 2 25 and 24 continue to move forward, which will push the T-shaped plate 36 to slide forward along the inner surface of the slide groove 121. At this time, the airbag 1 32 is squeezed, and the plurality of springs 2 35 are stretched. In the process of the airbag 1 32 being squeezed, the gas inside the airbag 1 32 overflows through the cooperation of the air inlet 321 and the one-way valve 1 322. Similarly, when the two clamps 29 clamp the straight oil pipe and move, they drive the matching hard pipe 37 and a plurality of nozzles 371 and a hose 33 close to one end of the hard pipe 37 to move in the same direction.

[0039] When the two clamping blocks 29 clamp the straight oil pipe and move forward to the welding area, the operation of the hydraulic cylinder 1 21 is immediately stopped, so that the two clamping blocks 29 clamp the fixed straight oil pipe and keep it still. At this time, the spring 1 242 slides upward along the inner surface of the vertical groove 232 on the upper part of the inner surface of the vertical groove 232. At the same time, the spring 1 242 is also located at the horizontal part of the front side of the upper surface of the arc guide rail 122. At this time, the front end of the push plate 25 is no longer tightly attached to the rear end of the T-shaped plate 36, and the lower end of the push plate 25 is also higher than the upper end of the T-shaped plate 36. Then the stretched springs 235 are reset; During the process of resetting the springs 2 35, the rear ends of the T-shaped plate 36 and the airbag 1 32 will be driven to move backwards, while the front end of the airbag 1 32 and the fixed plate 1 31 will remain stationary. At this time, the rear end of the straight oil pipe and the air inside will enter the hard pipe 37 through the nozzles 1 371, and enter the airbag 1 32 through the cooperation of the hose 1 33 and the one-way valve 2 323. During the process of the air inside the straight oil pipe being driven to flow, the argon gas in the welding area will enter the inner surface of the straight oil pipe through the tiny gap between the straight oil pipe and the L-shaped oil pipe, and then the argon gas will flow backwards through the outer surface and the inner surface of the straight oil pipe at the same time, so as to avoid oxygen on the inner surface of the straight oil pipe affecting the quality of welding.

[0040] After the welding of one end of the L-shaped oil pipe and the straight oil pipe is completed, the output ends of the two hydraulic cylinders 26 are moved to the side away from each other through the terminal control of the prior art, and at the same time, the fixing ring 27, the fixing rod 28 and the clamping block 29 are driven to move, so that the clamping of the two clamping blocks 29 on the straight oil pipe can be released. Then the hydraulic cylinder 1 21 can be stimulated, so that the output end of the hydraulic cylinder 1 21 drives the U-shaped plate 22, the L-shaped plate 23 and the push plate 1 24 and other structures to reset.

[0041] When the L-shaped plate 23 drives the push plates 1 24 and 25 to move backward and reset through the vertical groove 232 and the spring 1 242, the spring 1 242 slides downward along the upper surface of the arc guide rail 122. When the push plates 1 24 and 25 move backward until the rear end of the push plate 25 contacts the front end of the T-shaped plate 36, the push plate 25 is driven by the push plate 1 24 to continue to move backward. Due to the obstruction of the T-shaped plate 36, the push plate 25 rotates around the axial side connected to the push plate 1 24, away from the sliding rod 241, and at the same time, a number of sliding rods 241 are stretched.

[0042] When the slide bar 241 moves backward to the rear side of the horizontal part of the upper surface of the arc-shaped guide rail 122, the spring 1 242 drops to the bottom wall of the inner surface of the vertical groove 232, and the push plate 25 rotates to disengage from the T-shaped plate 36. Then the T-shaped plate 36 no longer blocks the push plate 25. At this time, the stretched slide bars 241 are reset. During the reset process of the slide bar 241, the push plate 25 is driven to rotate toward the side close to the slide bar 241, so that the push plate 25 returns to the vertical state.

[0043] Therefore, this solution achieves the effect of rapid clamping and positioning during the feeding process of the straight oil pipe through the cooperation of two laser emission sensors 271 and hydraulic cylinder 26 and other structures. When moving the straight oil pipe in preparation for welding, it can also squeeze the air bag 32 through the push plate 25 and the T-shaped plate 36, and then use the squeezed air bag 32 to reset this process, so as to drive the air flow around the oil pipe, realize the external continuous injection of argon gas and the internal negative pressure drainage of argon gas, and form the effect of internal and external double protective air curtains, so as to avoid the adverse effects of oxygen on the weld during welding.

[0044] Embodiment 3: Based on Embodiments 1 and 2, this embodiment is to realize the effect of automatically adjusting the welding position and generating vibration to improve the welding quality.

[0045] See also Figure 8 The pushing assembly 6 includes a hydraulic cylinder 3 61 fixedly connected to the upper end of the operating table 1, the output end of the hydraulic cylinder 3 61 is fixedly connected to an arc-shaped spray plate 62, the inner arc surface annular array of the arc-shaped spray plate 62 has a plurality of nozzles 2 63, and the outer arc surface of the arc-shaped spray plate 62 is fixedly connected to a hose 3 64.

[0046] The above-mentioned hose three 64 is connected to the external air pump, and the air pump is connected to the gas source of argon gas. Through the cooperation of the argon gas source and the air pump, the argon gas is continuously delivered to the inside of the hose three 64 and the inside of the arc spray plate 62.

[0047] Before preparing for welding, the two hydraulic cylinders three 61 are activated to run, and then the output ends of the two hydraulic cylinders three 61 push the arc spray plate 62 toward each other, and at the same time, the air pump is turned on to allow argon gas to enter the arc spray plate 62 through the hose three 64, and then spray from the nozzle two 63 to the welding area. When the two arc spray plates 62 are pushed close to the outer surface of the L-shaped oil pipe, the operation of the hydraulic cylinder three 61 is suspended, and the argon gas is still continuously sprayed from the nozzle two 63 to the welding area, and gathered around the end of the L-shaped oil pipe to be welded.

[0048] See also Figure 9-10 The fixing assembly 5 includes a fixing column 51 rotatably connected to the upper end of the operating table 1, a gear 3 52 is fixedly connected to the middle of the outer surface of the fixing column 51, a magnetic seat 53 is fixedly connected to the upper end of the fixing column 51, and an arc groove is symmetrically opened on the upper end of the magnetic seat 53. There are four arc blocks 511 in a circular array on the lower side of the outer surface of the fixing column 51. A cavity is opened on the inner surface of the fixing column 51, and a resonance cavity 512 is fixedly connected to the top wall and the bottom wall of the inner surface of the cavity. An L-shaped seat 54 is fixedly connected to the front side of the lower end of the operating table 1, and L The upper end of the horizontal part of the L-shaped seat 54 is fixedly connected to an airbag 2 55, the outer surface of the airbag 2 55 is fixedly connected to a hose 2 56, the end of the hose 2 56 away from the airbag 2 55 is fixedly connected to two airbags 3 59, the lower end of the horizontal part of the L-shaped push plate 58 is fixedly connected to the outer surface of the airbag 2 55, and the upper end of the operating table 1 is symmetrically fixedly connected to a rectangular plate 57, the two rectangular plates 57 are fixedly connected to a spring 3 571 at one end close to each other, and the two springs 3 571 are rotatably connected to a roller 1 572 at one end close to each other.

[0049] The magnetic seat 53 mentioned above is a conventional setting in the prior art. The terminal of the prior art can control whether the magnetic seat 53 continues to be magnetically attracted, and the magnetic size of the magnetic seat 53 can be adjusted. When it is necessary to weld the L-shaped oil pipe and the straight oil pipe, the control terminal makes the magnetic seat 53 have strong magnetism, so that the L-shaped oil pipe can be adsorbed and fixed, and demagnetization will not occur during the welding process.

[0050] Before the straight oil pipe is loaded, the L-shaped oil pipe is fixed by the magnetic suction seat 53, and the fixed column 51 and other structures cooperate with each other to keep the height and position of the L-shaped oil pipe unchanged.

[0051] See also Figure 7 The welding assembly 4 includes a motor 41 fixedly connected to the upper end of the operating table 1, the output end of the motor 41 is fixedly connected to a gear 2 44, the front end of the gear 2 44 is transmission-connected to a gear 1 43, the outer surfaces of the gear 2 44 and the gear 1 43 are meshed with a gear ring 42, the outer arc surface of the gear ring 42 is slidably connected to the inner surface of the ring guide 13, and the rear end of the gear ring 42 is fixedly connected to a laser welding head 45.

[0052] The laser welding head 45 mentioned above is a conventional design in the prior art, and the specific operating principle of the laser welding head 45 will not be elaborated in detail in this solution.

[0053] The gear 2 44 and the gear 1 43 are connected by a belt pulley in the prior art.

[0054] After the straight oil pipe is driven to move to the welding area, the T-shaped plate 36 is reset by a plurality of springs 35 and driven to move backward, so that the argon gas fills the inner surface of the straight oil pipe and the entire welding area, and then the laser welding head 45 and the motor 41 are excited. The output end of the motor 41 drives the gear 2 44 to rotate. When the gear 2 44 rotates, it will drive the gear 1 43 to rotate at the same speed. Then the gear 1 43 and the gear 2 44 cooperate to make the gear ring 42 drive the laser welding head 45 to rotate one circle along the inner surface of the ring guide 13. In the process of the laser welding head 45 being driven to rotate one circle, the laser welding head 45 welds the joint between the L-shaped oil pipe and the straight oil pipe.

[0055] After one round of welding is completed, the operation of the laser welding head 45 and the motor 41 is suspended.

[0056] See also Fig.11The transmission assembly 7 includes a Z-shaped rod 71 fixedly connected to the outer surface of the output end of the lower hydraulic cylinder three 61, a rack 72 is fixedly connected to the lower right end of the Z-shaped rod 71, a gear four 73 is meshed with the right end of the rack 72, a one-way rotating shaft 731 is fixedly connected to the inner surface of the gear four 73, a roller two 74 is fixedly connected to the inner surface of the one-way rotating shaft 731, roller two 74 is transmission-connected to roller three 75, a gear five 76 is fixedly connected to the upper outer surface of roller three 75, the outer surface of gear three 52 is meshed with gear five 76, and an L-shaped push plate 58 is fixedly connected to the right side of the upper end of the Z-shaped rod 71.

[0057] The one-way rotating shaft 731 mentioned above is a conventional setting in the prior art. Through the cooperation of the one-way rotating shaft 731, gear four 73 and roller two 74, the rack 72 moves upward to drive the gear four 73 to rotate while the roller two 74 does not rotate. When the rack 72 moves downward to drive the gear four 73 to rotate, the one-way rotating shaft 731 and roller two 74 rotate at the same time.

[0058] The above-mentioned transfer roller 2 74 and roller 3 75 are connected by a bevel gear transmission group in the prior art, and the radius of the bevel gear fixedly connected to the outer surface of roller 2 74 is small. When the rack 72 descends to drive gear 4 73 and roller 2 74 to rotate, the bevel gears are matched to make roller 3 75 and gear 5 76 rotate only 90°.

[0059] Before welding, when the output ends of the two hydraulic cylinders 3 61 push the arc spray plate 62 upward and release argon gas, the output end of the hydraulic cylinder 3 61 located on the lower side will drive the Z-shaped rod 71 to move upward at the same time during the upward movement. At the same time, the Z-shaped rod 71 will also drive the L-shaped push plate 58 to move in the same direction until the two arc spray plates 62 move to the vicinity of the L-shaped oil pipe. At this time, the lower side of the right end of the rack 72 is engaged with the outer surface of the gear four 73.

[0060] When the Z-shaped rod 71 drives the L-shaped push plate 58 to move, the L-shaped push plate 58 pulls the upper end of the airbag 2 55 upward. At this time, the airbag 2 55 is stretched, and the air pressure inside the airbag 2 55 becomes low. Then the gas inside the two airbags 3 59 enters the airbag 2 55 through the hose 2 56. At this time, the two airbags 3 59 shrink and do not squeeze the resonance cavity 512.

[0061] After the welding of one end of the L-shaped oil pipe and the straight oil pipe is completed, the two arc-shaped spray plates 62 still cooperate with the matching hose 3 64 and the spray head 2 63 to spray argon gas to the welding point.

[0062] After the two clamps 29 release the lock on the straight oil pipe and reset it, the two hydraulic cylinders 3 61 are stimulated to move the output ends of the two hydraulic cylinders 3 61 to the side away from each other, and the output end of the hydraulic cylinder 3 61 on the lower side will drive the Z-shaped rod 71 and the L-shaped push plate 58 to move downward at the same time.

[0063] Furthermore, during the descent of the Z-shaped rod 71, the rack 72 will be driven to descend, and through the cooperation of the gear four 73, the one-way rotating shaft 731 and the roller two 74, after the rack 72 has finished descending, the roller three 75 and the gear five 76 will rotate 90° counterclockwise at the same time, and since the gear three 52 and the gear five 76 are meshed, the gear five 76 will rotate 90° counterclockwise, which will cause the gear three 52 to rotate 90° clockwise, thereby achieving the effect of the fixed column 51, the gear three 52 and the magnetic seat 53 rotating in the same direction by 90°, that is, the unwelded end of the L-shaped oil pipe can be rotated backward to prepare for the next welding.

[0064] When the L-shaped push plate 58 is driven to descend by the Z-shaped rod 71, the horizontal part of the L-shaped push plate 58 cooperates with the horizontal part of the L-shaped seat 54 to achieve the effect of continuously squeezing the airbag two 55, so that the internal gas of the airbag two 55 will enter the two airbags three 59 through the hose two 56, so that when the gear five 76 drives the magnetic seat 53 to rotate, the two airbags three 59 expand and squeeze the resonance cavity 512, so that the volume of the resonance cavity 512 is reduced. When the output end of the hydraulic cylinder three 61 no longer descends, the L-shaped push plate 58 keeps squeezing the airbag two 55 to inflate the airbag three 59.

[0065] When the fixed column 51 is driven to rotate 90° clockwise, the four arc blocks 511 are driven by the fixed column 51 to rotate in the same direction. During the rotation of the arc blocks 511, one arc block 511 presses the matching roller 1 572 toward the side away from the fixed column 51, thereby compressing the spring 3 571. When the fixed column 51 drives the arc block 511 to rotate, the spring three 571 is compressed to the shortest point, and the roller one 572 just separates from the arc block 511 and is no longer squeezed.

[0066] Then the compressed spring 3 571 pushes the roller 1 572 toward the side close to the fixed column 51, and because the initial distance between the roller 1 572 and the fixed column 51 is less than the maximum length that the spring 3 571 can stretch, after the spring 3 571 is released from the compressed state, the spring 3 571 pushes the roller 1 572 toward the side close to the fixed column 51, and the roller 1 572 will continuously hit the outer surface of the fixed column 51; The two rollers 572 symmetrically hit the fixed column 51, which will cause the fixed column 51 to vibrate at a certain frequency. While the fixed column 51 vibrates, it cooperates with the squeezed resonance cavity 512 to increase the vibration frequency, so that the fixed column 51, the magnetic seat 53 and the welded oil pipe vibrate at a high frequency, which can promote the refinement of the weld metal grains and reduce residual stress. At the same time, a damping device is provided between the lower end of the fixed column 51 and the upper end of the operating table 1 to prevent the high-frequency vibration of the fixed column 51 from affecting other structures.

[0067] After the fixed column 51 drives the magnetic seat 53 and the welded oil pipe to rotate one circle, the two hydraulic cylinders 61 are activated to move the two arc-shaped spray plates 62 toward each other, and then the above operation is repeated to achieve the purpose of continuing to weld the unwelded end of the L-shaped oil pipe.

[0068] Therefore, this solution uses the coordination of structures such as the rack 72 and the gear four 73 to enable the magnetic seat 53 to drive the welded oil pipe to rotate 90°, thereby realizing automatic switching of the welding stations. At the same time, during the rotation process, the airbag two 55 can cooperate to expand the airbag three 59 and squeeze the resonance cavity 512, thereby reducing the volume of the resonance cavity 512. During the rotation process, the arc block 511 is also used to cooperate with the compression roller one 572 and the spring three 571, so that after the rotation is completed, the reduced resonance cavity 512 and the fixed column 51 generate high-frequency vibrations through the coordination of the roller one 572 and the spring three 571, thereby causing the magnetic seat 53 and the welded oil pipe to vibrate at the same time, thereby eliminating welding residual stress and improving the fatigue life of the weldment. At the same time, the non-contact vibration treatment avoids damage to the surface caused by the traditional hammering process.

[0069] It should be particularly noted that the specific installation method, circuit connection method and control method of the hydraulic cylinder 1 21, hydraulic cylinder 26, motor 41 and hydraulic cylinder 3 61 used in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0070] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An oil pipe welding device with a rapid positioning structure, comprising an operating table (1), characterized in that: A positioning component (2) is fixedly connected to the middle of the upper end of the operating table (1), an air suction component (3) is symmetrically fixedly connected to the upper end of the operating table (1), a pushing component (6) is symmetrically fixedly connected to the front side of the upper end of the operating table (1), a welding component (4) is fixedly connected to the upper end of the operating table (1) on the front side of the two pushing components (6), a fixing component (5) is fixedly connected to the front side of the upper end of the operating table (1), and a transmission component (7) is fixedly connected to the front side of the lower end of the operating table (1).

2. The oil pipe welding device with a rapid positioning structure according to claim 1, characterized in that: A V-shaped guide rail (11) is fixedly connected to the middle of the upper end of the operating table (1), a rectangular guide rail (12) is symmetrically fixedly connected to the middle of the upper end of the operating table (1), a sliding groove (121) is provided on the side of the two rectangular guide rails (12) away from each other, an arc guide rail (122) is fixedly connected to the side of the two rectangular guide rails (12) away from each other, and a ring guide rail (13) is fixedly connected to the front side of the upper end of the operating table (1).

3. The oil pipe welding device with a rapid positioning structure according to claim 2 is characterized in that: The positioning assembly (2) comprises a hydraulic cylinder (21) fixedly connected to the rear side of the upper end of the operating table (1); the output end of the hydraulic cylinder (21) is fixedly connected to a U-shaped plate (22); the upper end of the U-shaped plate (22) is symmetrically fixedly connected to an L-shaped plate (23); the lower ends of the horizontal parts of the two L-shaped plates (23) are respectively slidably connected to the upper end of the matching rectangular guide rail (12); the two L-shaped plates (23) are each provided with a vertical groove (232) on one side away from each other; the upper ends of the two L-shaped plates (23) are each fixedly connected to a U-shaped groove (231); the two The upper ends of the L-shaped plates (23) are fixedly connected to hydraulic cylinders 2 (26) on the sides away from each other, the output ends of the two hydraulic cylinders 2 (26) are fixedly connected to fixed rods (28), the ends of the two fixed rods (28) approaching each other are rotatably connected to clamping blocks (29), the outer surfaces of the two fixed rods (28) are fixedly connected to fixed rings (27), the ends of the two fixed rings (27) approaching each other are electrically connected to laser emission sensors (271), and the lower ends of the two fixed rings (27) are respectively slidably connected to the inner surfaces of the matching U-shaped grooves (231).

4. The oil pipe welding device with a rapid positioning structure according to claim 3 is characterized in that: The inner surface of the vertical groove (232) is slidably connected to a spring 1 (242); one end of the spring 1 (242) away from the L-shaped plate (23) is fixedly connected to a push plate 1 (24); the lower end of the push plate 1 (24) is rotatably connected to a push plate 2 (25); the rear ends of the push plates 1 (24) and 2 (25) are fixedly connected to a sliding rod (241); the outer surface of the spring 1 (242) is in close contact with the upper surface of the arc guide rail (122).

5. The oil pipe welding device with a rapid positioning structure according to claim 3 is characterized in that: The air suction assembly (3) comprises a fixing plate (31) fixedly connected to the middle part of the upper end of the operating table (1); the inner surface of the slide groove (121) is slidably connected to a T-shaped plate (36); the fixing plate (31) and the T-shaped plate (36) are jointly fixedly connected to an air bag (32); a hose (33) is provided on the outer surface of the air bag (32); an end of the hose (33) away from the air bag (32) is fixedly connected to a hard tube (37); a plurality of nozzles (371) are fixedly connected to the front side of the outer surface of the hard tube (37); a plurality of springs (35) are fixedly connected to the rear end of the T-shaped plate (36); a plurality of springs (35) are fixedly connected to the fixing plate (34) at the rear end; and the fixing plate (34) is fixedly connected to the upper end of the operating table (1) at the lower end.

6. The oil pipe welding device with a rapid positioning structure according to claim 5, characterized in that: An air inlet (321) is provided on the outer surface of the air bag 1 (32), and a one-way valve 1 (322) is fixedly connected to the outer surface of the air inlet (321); a one-way valve 2 (323) is fixedly connected to the outer surface of one end of the hose 1 (33) close to the air bag 1 (32); and the outer surface of the hard tube (37) is fixedly connected to the rear end of the clamping block (29).

7. The oil pipe welding device with a rapid positioning structure according to claim 2, characterized in that: The welding assembly (4) comprises a motor (41) fixedly connected to the upper end of the operating table (1); the output end of the motor (41) is fixedly connected to a second gear (44); the front end of the second gear (44) is drivingly connected to a first gear (43); the outer surfaces of the second gear (44) and the first gear (43) are meshed with a toothed ring (42); the outer arc surface of the toothed ring (42) is slidably connected to the inner surface of the ring guide rail (13); and the rear end of the toothed ring (42) is fixedly connected to a laser welding head (45).

8. The oil pipe welding device with a rapid positioning structure according to claim 1, characterized in that: The pushing assembly (6) comprises a hydraulic cylinder three (61) fixedly connected to the upper end of the operating table (1); the output end of the hydraulic cylinder three (61) is fixedly connected to an arc-shaped spray plate (62); the inner arc surface of the arc-shaped spray plate (62) has a plurality of second spray heads (63) in a circular array; the outer arc surface of the arc-shaped spray plate (62) is fixedly connected to a hose three (64).

9. The oil pipe welding device with a rapid positioning structure according to claim 8, characterized in that: The transmission assembly (7) comprises a Z-shaped rod (71) fixedly connected to the outer surface of the output end of the lower hydraulic cylinder three (61); a rack (72) is fixedly connected to the lower right end of the Z-shaped rod (71); a gear four (73) is meshed with the right end of the rack (72); a one-way rotating shaft (731) is fixedly connected to the inner surface of the gear four (73); a roller two (74) is fixedly connected to the inner surface of the one-way rotating shaft (731); the roller two (74) is transmission-connected to the roller three (75); and a gear five (76) is fixedly connected to the upper outer surface of the roller three (75).

10. The oil pipe welding device with a rapid positioning structure according to claim 9, characterized in that: The fixing assembly (5) comprises a fixing column (51) rotatably connected to the upper end of the operating table (1); a gear three (52) is fixedly connected to the middle of the outer surface of the fixing column (51); the outer surface of the gear three (52) meshes with the gear five (76); a magnetic suction seat (53) is fixedly connected to the upper end of the fixing column (51); four arc-shaped blocks (511) are arranged in a circular array on the lower side of the outer surface of the fixing column (51); a cavity is formed on the inner surface of the fixing column (51); the top wall and the bottom wall of the inner surface of the cavity are fixedly connected to the resonance cavity (512); an L-shaped seat (54) is fixedly connected to the front side of the lower end of the operating table (1); the upper horizontal portion of the L-shaped seat (54) is The end of the Z-shaped rod (71) is fixedly connected to an airbag 2 (55), the outer surface of the airbag 2 (55) is fixedly connected to a hose 2 (56), the end of the hose 2 (56) away from the airbag 2 (55) is fixedly connected to two airbags 3 (59), the right side of the upper end of the Z-shaped rod (71) is fixedly connected to an L-shaped push plate (58), the lower end of the horizontal part of the L-shaped push plate (58) is fixedly connected to the outer surface of the airbag 2 (55), the upper end of the operating table (1) is symmetrically fixedly connected to a rectangular plate (57), the two rectangular plates (57) are fixedly connected to a spring 3 (571) at one end close to each other, and the two springs 3 (571) are rotatably connected to a roller 1 (572) at one end close to each other.

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