Welding device for butt joint of metal pipes

Abstract

The invention belongs to the technical field of metal pipe welding, and particularly provides a welding device for metal pipe butt joint, which comprises an operation table, the operation table is respectively provided with an open-close type welding detection assembly, omni-directional adjusting type clamping assemblies and a limiting mechanism, the omni-directional adjusting type clamping assemblies are symmetrically arranged on two sides of the open-close type welding detection assembly, and the limiting mechanism is arranged on the omni-directional adjusting type clamping assemblies. The limiting mechanism is arranged on the front side of the opening and closing type welding detection assembly. According to the welding device for metal pipe butt joint, adaptive adjustment can be conducted according to the outer diameter and roundness of a metal pipe, the metal pipe can be cooled in time during welding, meanwhile, the welding seam quality of the metal pipe can be detected in time after welding, in addition, the position of the rotating clamping mechanism can be adjusted in all directions according to the pipe shape, and the welding efficiency is improved. The metal pipe centering and clamping device is suitable for metal pipes with different bending radiuses, is suitable for welding metal pipes with different outer diameters, and is simple to operate.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal pipe welding, and specifically refers to a welding device for butt welding of metal pipes. Background Art

[0002] During the processing of metal pipes, it is often necessary to butt the ends of two pipes and then perform welding to form a long pipe. In the prior art, when welding metal pipes, it is necessary to clamp the two metal pipes respectively, align their end faces, and then a worker holds a welding torch to perform welding.

[0003] The existing metal pipe welding devices in the prior art also have the following deficiencies: 1. When some metal pipe welding devices are welding, the welding torch cannot be adaptively adjusted according to the specific roundness of the metal pipe, resulting in poor welding effect for metal pipes with uneven roundness and being difficult to be applicable to the welding of metal pipes with different outer diameters; 2. For the welding of bent metal pipes, it is difficult to clamp, fix and align them, and the adaptability of the welding device is poor; 3. Some metal pipe welding devices cannot cool the metal pipe in time after welding, and at the same time do not have the ability to detect the quality of the weld seam in time. Summary of the Invention

[0004] To solve the above existing problems, the present invention provides a welding device for butt welding of metal pipes that can be adaptively adjusted according to the outer diameter and roundness of the metal pipe, can cool the metal pipe in time during welding, can detect the quality of the weld seam of the metal pipe in time after welding, and can also adjust the position of the rotating clamping mechanism omnidirectionally according to the pipe type, firmly clamp and align the metal pipe, is also applicable to metal pipes with different bending radii, is applicable to the welding of metal pipes with different outer diameters, and is easy to operate.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows: A welding device for butt welding of metal pipes provided by the present invention includes an operation table, on which an opening and closing type welding detection assembly, an omnidirectional adjustment type clamping assembly, and a limiting mechanism are respectively provided. The omnidirectional adjustment type clamping assemblies are symmetrically arranged on both sides of the opening and closing type welding detection assembly, and the limiting mechanism is arranged on the front side of the opening and closing type welding detection assembly; The opening and closing type welding detection integrated assembly includes a control housing mechanism, a connecting frame mechanism, a detection frame mechanism, a welding mechanism, and an induction mechanism. The control housing mechanism is arranged on the operation table, the connecting frame mechanism and the detection frame mechanism are respectively movably arranged inside the control housing mechanism, the connecting frame mechanism and the detection frame mechanism are combined to form a ring, the welding mechanism is arranged on the connecting frame mechanism, the induction mechanism is arranged on the detection frame mechanism, the welding mechanism and the induction mechanism are respectively arranged inside the ring formed by the connecting frame mechanism and the detection frame mechanism, and the welding mechanism and the induction mechanism are arranged opposite to each other; The omnidirectional adjustment type clamping assembly includes a horizontal adjustment mechanism, a vertical adjustment mechanism, and a rotating clamping mechanism. The horizontal adjustment mechanisms are symmetrically arranged on both sides of the control housing mechanism, the vertical adjustment mechanism is movably arranged on the horizontal adjustment mechanism, and the rotating clamping mechanism is rotatably arranged on the vertical adjustment mechanism.

[0006] Further, the control housing mechanism includes a control column, a lower support frame, an upper support frame, a power motor, and a power wheel. The control column is arranged on the operation table, and a blowing pump is arranged inside the control column. The lower support frame is arranged at the upper end of the control column, and the lower support frame is suspended above the operation table. The upper support frame is rotatably arranged on the upper part of the lower support frame, and the lower support frame and the upper support frame are combined to form a ring. A second lock is arranged on the side of the lower support frame and the upper support frame away from the control column. The power motor is arranged on the control column, and the power wheel passes through the inner wall of the lower support frame and is rotatably arranged inside the upper end of the control column. The power wheel is electrically connected to the output end of the power motor.

[0007] Further, the connecting frame mechanism includes a first slide plate, a first power connecting rod, an attracting magnetic strip, and a first carrier. The first slide plates are symmetrically and slidably arranged on the inner side walls of the upper support frame. The first slide plates are semicircularly arranged. The first power connecting rods are uniformly connected between the symmetric first slide plates. First half rods are respectively connected to both ends of the symmetric first slide plates. The attracting magnetic strip is embedded on the first half rod. The first carrier is connected to the inner center of the symmetric first slide plates. A through pipe is arranged on the side wall of the first carrier, and the through pipe extends into the first carrier. A connecting pipe is connected between the through pipe and the control column. The length of the connecting pipe is sufficient to surround a metal pipe with the largest outer diameter in one week, and when the welding mechanism rotates, it does not affect the operation of the device; Further, the detection frame mechanism includes a second slide plate, a second power connecting rod, an electromagnetic strip and a second carrier, the second slide plate is symmetrically slidably arranged on the inner side wall of the lower support frame, the second slide plate is arranged in a semicircular shape, the first slide plate and the second slide plate on the same side are closed to form a full circle, the second power connecting rod is evenly connected between the symmetrical second slide plates, the two ends of the symmetrical second slide plates are respectively connected to the second half rods, the electromagnetic strip is embedded in the second half rod, the electromagnetic strip and the attracting magnetic strip are arranged correspondingly, and the second carrier is connected to the inner center of the symmetrical second slide plate; Preferably, the first power link and the second power link have the same structure and size, and the full circle formed by closing the first slide plate and the second slide plate rotates inside the upper support frame and the lower support frame, and the size of the cylinder formed by the first half rod and the second half rod on the same side is equal to the size of the first power link, and the power wheel is respectively meshed and transmission-connected with the evenly distributed first power link and the second power link; the electromagnetic strip is energized to generate magnetism, which absorbs the corresponding magnetic strip, so that the first half rod and the second half rod on the same side are combined to form the same cylinder as the first power link, ensuring the tight connection between the connecting frame mechanism and the detection frame mechanism, and the power wheel rotates, thereby driving the full circle formed by the connecting frame mechanism and the detection frame mechanism to rotate inside the upper support frame and the lower support frame.

[0008] Further, the welding mechanism includes a telescopic column, a support platform, a protective cover, a welding needle, a follower platform and a cooling pipe, the telescopic column is arranged on the first carrier, the central axis of the telescopic column and the center of the circle of the first slide plate are in the same plane, the support platform is arranged at the movable end of the telescopic column, the outer side of the telescopic column is sleeved with a compression spring, the compression spring is connected between the support platform and the first carrier, the four corners of the end face of the support platform are provided with support wheels, the protective cover is arranged on the support platform, the protective cover is arranged on the inner side of the support wheel, the welding needle is embedded and plugged on the support platform, and the welding needle is concentrically arranged on the inner side of the protective cover; Furthermore, the following platform is rotatably arranged on a side of the supporting platform away from the control column, a torsion spring is arranged between the following platform and the supporting platform, limit blocks are symmetrically arranged on both sides of the following platform, and following wheels are symmetrically arranged on the end surface of the following platform facing the supporting platform, and the following wheels are arranged at the end of the following platform away from the supporting platform, the cooling pipe is connected between the first carrier and the following platform, the output end of the cooling pipe runs through the center of the following platform, the cooling pipe is connected to the output end of the blowing pump on the inner side of the control column through the through pipe and the connecting pipe, when the welding needle is working, the blowing pump in the control column is working, and the metal pipe is timely cooled through the cooling pipe, it is worth noting that the wind speed blown out from the output end of the cooling pipe can be regulated by the blowing pump, and the output end of the cooling pipe is not directly facing the welding needle, so that it does not affect the welding work of the welding needle; After the metal pipe is fixed, the outer wall of the metal pipe presses against the supporting wheel and the follower wheel respectively, causing the follower platform to rotate adaptively around the supporting platform. The torsion spring is compressed, the telescopic column contracts, the compression spring is compressed, and the follower wheel and the supporting wheel fit the outer wall track of the metal pipe. The welding needle is aligned with the output end of the cooling pipe at the weld. It is applicable to metal pipes with different outer diameters. During the welding process, the follower wheel and the supporting wheel always adaptively fit the outer wall track of the metal pipe under the elastic action of the compression spring and the torsion spring respectively. Even if the roundness of the metal pipe is uneven, the welding needle and the output end of the cooling pipe can be adjusted adaptively to ensure that the distance between the welding needle and the weld of the metal pipe is uniform and the welding quality is ensured.

[0009] Further, the induction mechanism includes a three-stage telescopic rod, a covering cover, and a differential pressure detector. The three-stage telescopic rod is arranged on the second carrier, and the central axis of the three-stage telescopic rod coincides with the central axis of the telescopic column. The covering cover is arranged at the movable end of the three-stage telescopic rod. A pressure spring is sleeved outside the three-stage telescopic rod, and the pressure spring is connected between the covering cover and the second carrier. The covering cover is provided with an open upper end. The differential pressure detector is embedded inside the covering cover, and the model of the differential pressure detector is DP-40. A pressure strip is arranged around the side of the covering cover away from the second carrier, and the pressure strip is made of rubber material. After the metal pipe is fixed, the metal pipe presses down the covering cover, the three-stage telescopic rod contracts, and the pressure spring is compressed, so that the pressure strip adaptively fits on the outer wall of the metal pipe, and the differential pressure detector is aligned with the weld. After the welding is completed, the differential pressure detector works. At this time, the staff takes an external air charging pipe and aligns it with one end of the metal pipe, and the air pump inflates the metal pipe. The air inside the metal pipe circulates rapidly, and the differential pressure detector detects around the weld of the metal pipe. If the weld is intact, there is no obvious change during the process of the differential pressure detector turning back to its original position. If there is a gap in the weld, when the differential pressure detector rotates to the gap, due to the leakage of the gas flowing inside the metal pipe through the gap, the air pressure at this place changes suddenly, which causes the reaction of the differential pressure detector. The differential pressure detector issues an alarm, and the power motor stops working. Wait for the staff to check and handle it, which can detect the weld in time after welding and quickly locate the gap.

[0010] Further, the horizontal adjustment mechanism includes a centering screw, an adjustment frame, and a sliding screw. The centering screws are symmetrically arranged on both sides of the control housing mechanism, and the centering screws are embedded in the operating table. The adjustment frame is slidably arranged on the operating table, and the lower part of the adjustment frame is meshingly sleeved on the centering screw. The sliding screw is embedded and rotatably arranged in the adjustment frame, and the sliding screw is perpendicular to the centering screw. The vertical adjustment mechanism includes an adjustment block, an adjustment column, a lifting screw, and a top plate. The adjustment block is meshingly sleeved on the sliding screw, and the adjustment block slides in the adjustment frame. The adjustment column is rotatably arranged on the adjustment block. The lifting screw is coaxially meshingly arranged on the upper part of the adjustment column. The top plate is arranged at the upper end of the lifting screw. A limiting telescopic column is connected between the top plate and the adjustment block, and the limiting telescopic columns are symmetrically arranged on both sides of the adjustment column. The rotating clamping mechanism includes a rotating ring, a positioning bolt, a clamping lower seat, and a clamping upper frame. The rotating ring is movably arranged on the upper part of the top plate. There are two rotating rings, and the two rotating rings are stacked in sequence. The positioning bolt passes through the rotating ring and is meshingly arranged on the top plate. Friction pads are respectively arranged on the upper and lower surfaces of the rotating ring. The two clamping lower seats are respectively arranged on the side walls of the rotating ring, and the two clamping lower seats are distributed along the circumferential direction of the rotating ring. The inner side of the clamping lower seat is trapezoidal in reverse, and a rubber pad is arranged on the inner side wall of the clamping lower seat. The clamping upper frame is movably arranged on the upper part of the clamping lower seat, and the clamping upper frame is in an inverted C shape. The clamping lower seat and the clamping upper frame are fixed by fastening screws.

[0011] During use, select the appropriate clamping part according to the type of the metal pipe. If the metal pipe is a straight pipe, only one set of clamping lower seat and clamping upper frame is needed for clamping. If the metal pipe is a bent pipe, select the appropriate bent section for clamping (select according to the position of the part to be welded or for the convenience of the operator). Loosen the positioning bolt, and the two rotating rings can drive the clamping lower seats to rotate freely in the circumferential direction. Rotate the two clamping lower seats to conform to the direction of the bent part of the metal pipe. Place the metal pipe on the two clamping lower seats, and install the clamping upper frames respectively. Tighten the fastening screws to relatively fix the metal pipe with the clamping lower seat and the clamping upper frame. The trapezoidal clamping lower seat in reverse adapts to metal pipes with different outer diameters, and the rubber pad under extrusion adaptively deforms to fit the outer wall of the bent part of the metal pipe, providing strong friction for auxiliary fixation. Then rotate the metal pipe so that the end face to be welded faces the lower support frame in the reverse direction, and the rotating ring rotates accordingly. After adjusting the position, tighten the positioning bolt to squeeze the rotating ring, and the friction pad provides strong friction, thus positioning the rotating ring so that it cannot rotate. Subsequently, the rotating clamping mechanism and the metal pipe as a whole are moved up and down through the vertical adjustment mechanism, and then the horizontal positions of the vertical adjustment mechanism, the rotating clamping mechanism, and the metal pipe as a whole are adjusted by respectively turning the sliding screw and the centering screw, realizing the all-round position adjustment of the rotating clamping mechanism and adapting to different pipe types.

[0012] Further, the limiting mechanism includes a limiting stud, a limiting plate, an adjusting ring and a receiving rod. The limiting stud is vertically arranged on the side of the lower support frame away from the control column. The limiting plate is slidably sleeved on the limiting stud. The adjusting ring is rotatably arranged at the lower part of the limiting plate, and the adjusting ring is meshed and sleeved on the limiting stud. The receiving rods are symmetrically arranged on the side wall of the limiting plate close to the lower support frame, and the receiving rods are symmetrically arranged on both sides of the lower support frame. A scale is vertically arranged on one side of the limiting stud, the scale penetrates through the limiting plate, and the zero position of the scale is on the same horizontal plane as the center of the circle formed by the lower support frame and the upper support frame. Centering pointers are respectively arranged on the upper walls of the receiving rods, and the tips of the centering pointers are on the same plane as the center of the circle formed by the lower support frame and the upper support frame. Adjust the position of the receiving rod in advance according to the outer diameter of the part of the metal pipe to be welded, which is convenient for the staff to judge whether the metal pipe is concentric with the complete circle formed by the upper arc plate and the lower arc plate.

[0013] Preferably, a main controller is arranged inside the control column. The main controller adopts a PLC controller, and the model of the main controller is HCS12. The main controller is electrically connected to the welding needle, the air blowing pump, the electromagnetic strip and the differential pressure detector respectively.

[0014] The beneficial effects achieved by the present invention with the above structure are as follows: 1. A welding device for butt welding of metal pipes provided by the present invention adopts the pre-action principle combined with the elastic structure, and sets an opening and closing type welding detection component. During the welding process, the follower wheel and the supporting wheel always adaptively fit the outer wall track of the metal pipe under the elastic action of the compression spring and the torsion spring respectively, and can timely cool the metal pipe. Even if the roundness of the metal pipe is uneven, the welding needle and the output end of the cooling pipe can also make adaptive adjustments to ensure that the distance between the welding needle and the weld of the metal pipe is uniform and ensure the welding quality. 2. A fully adjustable clamping component is set, so that the rotating clamping mechanism can be adjusted in position in the horizontal direction, vertical direction and circumferential direction, and the position of the rotating clamping mechanism can be adjusted omnidirectionally according to the pipe type to firmly clamp and center the metal pipe, which is also applicable to metal pipes with different bending radii. 3. The air pressure principle is combined with the reciprocating working mode, and the differential pressure change at the weld is detected in time by the differential pressure detector after welding to quickly locate the gap. 4. The opening and closing type structure is adopted, which is convenient for welding and taking large-sized metal pipes, is applicable to welding metal pipes with different outer diameters, and is easy to operate. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a welding device for butt welding of metal pipes provided by the present invention; Figure 2 It is a top view of a welding device for butt welding of metal pipes provided by the present invention; Figure 3 It is a structural schematic diagram of an opening and closing type welding detection assembly; Figure 4 It is a front view of an opening and closing type welding detection assembly; Figure 5 It is a structural schematic diagram of a control housing mechanism; Figure 6 It is a combined structural schematic diagram of a connecting frame mechanism and a welding mechanism; Figure 7 It is a combined structural schematic diagram of a detection frame mechanism and an induction mechanism; Figure 8 It is Figure 4 a sectional structural schematic diagram at A-A in Figure 9 It is a structural schematic diagram of an omnidirectional adjustable clamping assembly; Figure 10 It is a combined structural schematic diagram of a vertical adjustment mechanism and a rotating clamping mechanism; Figure 11 It is a structural schematic diagram of a limiting mechanism.

[0016] Among them, 1. operating table, 2. opening and closing type welding detection assembly, 21. control housing mechanism, 211. control column, 212. lower support frame, 213. upper support frame, 214. second lock, 215. power motor, 216. power wheel, 217. main controller, 22. connecting frame mechanism, 221. first slide plate, 222. first power connecting rod, 223. first half rod, 224. attracting magnetic strip, 225. first carrier, 23. detection frame mechanism, 231. second slide plate, 232. second power connecting rod, 233. second half rod, 234. electromagnetic strip, 235. second carrier, 24. welding mechanism, 241. telescopic column, 242. compression spring, 243. supporting platform, 244. supporting wheel, 245. protective cover, 246. welding needle, 247. follower platform, 248. follower wheel, 249. limiting block, 2410. cooling pipe, 25. induction mechanism, 251. three-section telescopic rod, 252. pressure spring, 253. covering cover, 254. differential pressure detector, 255. pressing strip, 26. through pipe, 27. connecting pipe, 3. omnidirectional adjustable clamping assembly, 31. horizontal adjustment mechanism, 311. centering screw rod, 312. adjustment frame, 313. sliding screw rod, 32. vertical adjustment mechanism, 321. adjustment block, 322. adjustment column, 323. limiting telescopic column, 324. lifting screw rod, 325. top disc, 33. rotating clamping mechanism, 331. rotating ring, 332. clamping lower seat, 333. rubber pad, 334. clamping upper frame, 335. positioning bolt, 336. fastening screw, 4. limiting mechanism, 41. limiting stud, 42. limiting plate, 43. receiving rod, 44. adjusting ring, 45. scale, 46. centering pointer. Specific Embodiments

[0017] The technical solution of the present invention will be further described in detail below in conjunction with specific embodiments. The parts of the technical features or connection relationships of the present invention that are not described in detail are all prior arts adopted.

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] As Figures 1-11 shown, a welding device for butt welding of metal pipes provided by the present invention includes an operating table 1. An opening and closing type welding detection assembly 2, an omni-directional adjustable clamping assembly 3 and a limiting mechanism 4 are respectively arranged on the operating table 1. The omni-directional adjustable clamping assembly 3 is symmetrically arranged on both sides of the opening and closing type welding detection assembly 2, and the limiting mechanism 4 is arranged on the front side of the opening and closing type welding detection assembly 2; Among them, the opening and closing type welding detection assembly 2 includes a control housing mechanism 21. The control housing mechanism 21 is arranged on the operating table 1. A connecting frame mechanism 22 and a detection frame mechanism 23 are respectively movably arranged inside the control housing mechanism 21. The connecting frame mechanism 22 and the detection frame mechanism 23 are combined to form a ring. A welding mechanism 24 is arranged on the connecting frame mechanism 22, and an induction mechanism 25 is arranged on the detection frame mechanism 23. The welding mechanism 24 and the induction mechanism 25 are respectively arranged inside the ring formed by the connecting frame mechanism 22 and the detection frame mechanism 23, and the welding mechanism 24 and the induction mechanism 25 are arranged opposite to each other.

[0020] The control housing mechanism 21 includes a control column 211. The control column 211 is arranged on the operating table 1. An air blowing pump is arranged inside the control column 211. An upper support frame 213 is rotatably arranged at the upper end of the control column 211. The upper support frame 213 is suspended above the operating table 1. The upper part of the lower support frame 212 is rotatably provided with an upper support frame 213. The lower support frame 212 and the upper support frame 213 are arranged in a semi-cylindrical shape. The lower support frame 212 and the upper support frame 213 are combined to form a ring. A second lock 214 is arranged on the side far from the control column 211 between the lower support frame 212 and the upper support frame 213. A power motor 215 is arranged on the control column 211. A power wheel 216 is rotatably arranged through the inner wall of the lower support frame 212 at the upper end of the control column 211. The power wheel 216 is electrically connected to the output end of the power motor 215.

[0021] The connecting frame mechanism 22 includes a first sliding plate 221. The first sliding plate 221 is symmetrically and slidably arranged on the inner side wall of the upper support frame 213. The first sliding plate 221 is semicircularly arranged. The first power connecting rods 222 are evenly connected between the symmetric first sliding plates 221. The two ends of the symmetric first sliding plates 221 are respectively connected with first half rods 223. An attracting magnetic strip 224 is embedded in the first half rod 223. The inner center of the symmetric first sliding plates 221 is connected with a first carrier 225. A through pipe 26 is arranged on the side wall of the first carrier 225. The through pipe 26 extends into the first carrier 225. A connecting pipe 27 is connected between the through pipe 26 and the control column 211.

[0022] The detection frame mechanism 23 includes a second sliding plate 231. The second sliding plate 231 is symmetrically and slidably arranged on the inner side wall of the lower support frame 212. The second sliding plate 231 is semicircularly arranged. The first sliding plate 221 and the second sliding plate 231 on the same side are closed to form a complete circle. The second power connecting rods 232 are evenly connected between the symmetric second sliding plates 231. The two ends of the symmetric second sliding plates 231 are respectively connected with second half rods 233. An electromagnetic strip 234 is embedded in the second half rod 233. The electromagnetic strip 234 is arranged corresponding to the attracting magnetic strip 224. The inner center of the symmetric second sliding plates 231 is connected with a second carrier 235; The structures and dimensions of the first power connecting rod 222 and the second power connecting rod 232 are the same. The complete circle formed after the first sliding plate 221 and the second sliding plate 231 are closed rotates inside the upper support frame 213 and the lower support frame 212. The size of the cylinder formed by the combination of the first half rod 223 and the second half rod 233 on the same side is equal to the size of the first power connecting rod 222. The power wheels 216 are respectively meshed and drivingly connected with the evenly distributed first power connecting rods 222 and the second power connecting rods 232. The closed connecting frame mechanism 22 and the detection frame mechanism 23 are driven by the power wheels 216 to rotate inside the closed upper support frame 213 and the lower support frame 212.

[0023] The welding mechanism 24 includes a telescopic column 241. The telescopic column 241 is arranged on the first carrier 225. The central axis of the telescopic column 241 and the center of the first slide plate 221 are in the same plane. A supporting platform 243 is provided at the movable end of the telescopic column 241. A compression spring 242 is sleeved outside the telescopic column 241. The compression spring 242 is connected between the supporting platform 243 and the first carrier 225. Supporting wheels 244 are provided at the four corners of the end face of the supporting platform 243. A protective cover 245 is provided on the supporting platform 243. The protective cover 245 is arranged inside the supporting wheels 244. A welding needle 246 is inserted into the supporting platform 243 in an embedded manner. The welding needle 246 is concentrically arranged inside the protective cover 245. A follower platform 247 is rotatably arranged on one side of the supporting platform 243 away from the control column 211. A torsion spring is provided between the follower platform 247 and the supporting platform 243. Limiting blocks 249 are symmetrically arranged on both sides of the follower platform 247. In the initial state, under the elastic action of the torsion spring, the limiting blocks 249 abut against the columns of the supporting wheels 244, so that the follower platform 247 does not fit with the supporting platform 243. Follower wheels 248 are symmetrically arranged on the end face of the follower platform 247 facing the supporting platform 243. The follower wheels 248 are arranged at the end of the follower platform 247 away from the supporting platform 243. A cooling pipe 2410 is connected between the first carrier 225 and the follower platform 247. The output end of the cooling pipe 2410 penetrates through the center of the follower platform 247. The cooling pipe 2410 is connected to the output end of the air blowing pump inside the control column 211 through a through pipe 26 and a connecting pipe 27.

[0024] The induction mechanism 25 includes three-section telescopic rods 251. The three-section telescopic rods 251 are arranged on the second carrier 235. The central axis of the three-section telescopic rods 251 coincides with the central axis of the telescopic column 241. A covering cover 253 is provided at the movable end of the three-section telescopic rods 251. A pressure spring 252 is sleeved outside the three-section telescopic rods 251. The pressure spring 252 is connected between the covering cover 253 and the second carrier 235. The covering cover 253 is provided with an open upper end. A differential pressure detector 254 is embedded inside the covering cover 253. A pressing strip 255 is arranged around one side of the covering cover 253 away from the second carrier 235.

[0025] The omnidirectional adjustable clamping assembly 3 includes a horizontal adjustment mechanism 31, which is symmetrically arranged on both sides of the control housing mechanism 21, and a vertical adjustment mechanism 32 is movably arranged on the horizontal adjustment mechanism 31, and a rotating clamping mechanism 33 is rotatably arranged on the vertical adjustment mechanism 32; wherein, the horizontal adjustment mechanism 31 includes a centering screw 311, which is symmetrically arranged on both sides of the control housing mechanism 21, and the centering screw 311 is embedded in the operating table 1, and an adjustment frame 312 is meshed and sleeved on the centering screw 311, and the adjustment frame 312 is slidably arranged on the operating table 1, and the adjustment frame 312 is internally mounted. A sliding screw 313 is embedded and rotatable, and the sliding screw 313 and the centering screw 311 are perpendicular to each other; the vertical adjustment mechanism 32 includes an adjustment block 321, the adjustment block 321 is meshed and sleeved on the sliding screw 313, the adjustment block 321 slides in the adjustment frame 312, an adjustment column 322 is rotatably provided on the adjustment block 321, and a lifting screw 324 is coaxially meshed on the upper part of the adjustment column 322, and a top plate 325 is provided on the upper end of the lifting screw 324, and a limited telescopic column 323 is connected between the top plate 325 and the adjustment block 321, and the limited telescopic column 323 is symmetrically arranged on both sides of the adjustment column 322.

[0026] The rotating clamping mechanism 33 includes a rotating ring 331, which is movably arranged on the upper part of the top plate 325. There are two rotating rings 331, which are stacked in sequence. A positioning bolt 335 is meshed on the top plate 325, and the positioning bolt 335 passes through the rotating ring 331. Friction pads are respectively arranged on the upper and lower surfaces of the rotating ring 331. The rotating ring 331 can be rotated arbitrarily by loosening the positioning bolt 335. The positioning bolt 335 is tightened to squeeze the rotating ring 331, and the friction pad provides a strong friction force, so that The swivel 331 is positioned so that it cannot rotate. A clamping lower seat 332 is respectively provided on the side walls of the two swivels 331. The two clamping lower seats 332 are distributed along the circumferential direction of the swivel 331. The inner side of the clamping lower seat 332 is arranged in an inverted trapezoidal shape. A rubber pad 333 is provided on the inner side wall of the clamping lower seat 332. A clamping upper frame 334 is movably provided on the upper part of the clamping lower seat 332. The clamping upper frame 334 is arranged in an inverted 匚 shape. The clamping lower seat 332 and the clamping upper frame 334 are fixed by fastening screws 336.

[0027] The limiting mechanism 4 includes a limiting stud 41, which is vertically arranged on the side of the lower support frame 212 away from the control column 211, and a limiting plate 42 is slidably sleeved on the limiting stud 41. An adjusting ring 44 is rotatably provided at the lower part of the limiting plate 42, and the adjusting ring 44 is meshed and sleeved on the limiting stud 41. A receiving rod 43 is symmetrically arranged on the side wall of the limiting plate 42 close to the lower support frame 212, and the receiving rod 43 is symmetrically arranged on both sides of the lower support frame 212. A scale 45 is vertically arranged on one side of the limiting stud 41, and the scale 45 passes through the limiting plate 42. A centering pointer 46 is respectively arranged on the upper wall of the centering pointer 46, and the tip of the centering pointer 46 is in the same plane as the center of the circular ring formed by the lower support frame 212 and the upper support frame 213.

[0028] Inside the control column 211, there is a main controller 217. The main controller adopts a PLC controller, and the model of the main controller is HCS12. The main controller 217 is electrically connected to the welding needle 246, the air blowing pump, the electromagnetic strip 234, and the differential pressure detector 254 respectively.

[0029] Working principle and working process: During specific use, first rotate the adjusting ring 44 according to the outer diameter of the part of the metal pipe to be welded. The adjusting ring 44 slides up and down on the limit stud 41, thereby driving the limit plate 42 to slide up and down on the scale 45. Adjust the horizontal position of the limit plate 42 according to the indication of the scale 45, so that the receiving rod 43 moves up and down at both ends of the lower support frame 212 until the vertical distance between the upper end face of the receiving rod 43 and the arc center of the lower support frame 212 is equal to the outer diameter of the metal pipe; then install the two metal pipes to be butted onto the omnidirectional adjustable clamping assembly 3 respectively.

[0030] Before installation, select a suitable clamping part according to the pipe type of the metal pipe. If the metal pipe is a straight pipe, only one set of clamping lower seat 332 and clamping upper frame 334 is needed for clamping; if the metal pipe is a bent pipe, select a suitable bent section for clamping (select according to the position of the part to be welded or for the convenience of the operator). Loosen the positioning bolt 335, so that the two rotating rings 331 drive the clamping lower seat 332 to rotate freely in the circumferential direction. Rotate the two clamping lower seats 332 to conform to the direction of the bent part of the metal pipe. Place the metal pipe on the two clamping lower seats 332, and install the clamping upper frames 334 respectively. Tighten the fastening screws 336 to relatively fix the metal pipe with the clamping lower seat 332 and the clamping upper frame 334. The trapezoidal clamping lower seat 332 adapts to metal pipes with different outer diameters, and the rubber pad 333 under extrusion adapts to deform and fit the outer wall of the bent part of the metal pipe, providing strong friction for auxiliary fixation. Then rotate the metal pipe so that the end face to be welded faces the opposite direction of the lower support frame 212. The rotating ring 331 rotates accordingly. After adjusting the position, tighten the positioning bolt 335 to squeeze the rotating ring 331, and the friction pad provides strong friction, thereby positioning the rotating ring 331 so that it cannot rotate; Then, the adjusting column 322 is rotated, and the lifting screw 324 is engaged with the adjusting column 322, so that the top plate 325 moves up and down, driving the rotating clamping mechanism 33 and the metal tube to move up and down as a whole, so that the end of the metal tube is overlapped on the receiving rod 43 on the same side, and then the sliding screw 313 is turned to adjust the horizontal position of the vertical adjusting mechanism 32, the rotating clamping mechanism 33 and the metal tube as a whole, and observe that the center position of the end face of the metal tube coincides with the centering pointer 46. At this time, the center of the end face of the metal tube to be welded is concentric with the circular ring formed by the lower support frame 212 and the upper support frame 213, so as to ensure the centering and welding quality of the metal tube; finally, the centering screw 311 is turned to center the metal tubes fixed on both sides toward the inner side of the lower support frame 212 and the upper support frame 213. During this period, the sensing mechanism 25 needs to be squeezed appropriately to make way.

[0031] After the two metal tubes are butted end to end, the upper support frame 213 is closed, and the second lock buckle 214 is closed (the two can be preliminarily fixed in advance by spot welding). At this time, the metal tube presses down the covering cover 253, the three-section telescopic rod 251 shrinks, and the pressure spring 252 is compressed, so that the pressure strip 255 is adaptively attached to the outer wall of the metal tube, and the pressure difference detector 254 is aligned with the weld; at the same time, the outer wall of the metal tube squeezes the support wheel 244 and the follower wheel 248 respectively, so that the follower platform 247 rotates adaptively around the support platform 243, the torsion spring is compressed, the telescopic column 241 shrinks, and the compression spring 242 Compression, the follower wheel 248 and the support wheel 244 fit the outer wall trajectory of the metal tube, and the welding needle 246 and the output end of the cooling tube 2410 are aligned with the weld. It is suitable for metal tubes with different outer diameters, and in the welding process, the follower wheel 248 and the support wheel 244 are respectively under the elastic action of the compression spring 242 and the torsion spring, and always adaptively fit the outer wall trajectory of the metal tube. Even if the roundness of the metal tube is uneven, the welding needle 246 and the output end of the cooling tube 2410 can be adaptively adjusted to ensure that the distance between the welding needle 246 and the weld of the metal tube is uniform, thereby ensuring the welding quality.

[0032] The main controller 217 is started, and the electromagnetic strip 234 is energized to generate magnetism, attracting the corresponding attracting magnetic strip 224, so that the first half rod 223 and the second half rod 233 on the same side are combined to form a cylinder identical to the first power connecting rod 222, ensuring the tight connection between the connecting frame mechanism 22 and the detection frame mechanism 23. The power motor 215 is started, and the power wheel 216 rotates, thereby driving the whole circle formed by the connecting frame mechanism 22 and the detection frame mechanism 23 to rotate within the upper support frame 213 and the lower support frame 212. At the same time, the welding needle 246 works to weld the weld seam. The air blowing pump in the control column 211 works, and the metal tube is cooled in time through the cooling pipe 2410. It should be noted that the wind speed blown out from the output end of the cooling pipe 2410 can be regulated by the air blowing pump, and the output end of the cooling pipe 2410 is not directly opposite to the welding needle 246 so as not to affect the welding work of the welding needle 246; the welding mechanism 24 first rotates towards the direction of the control column 211. During this process, the induction mechanism 25 does not work. It is not until the power motor 215 runs for a period of time and the welding mechanism 24 rotates one week and returns to its original position, that is, after the welding of the metal tube for one circle is completed, the welding needle 246 stops working. At this time, the air blowing pump continues to work to continuously cool the weld seam of the metal tube; the staff places the external inflatable tube at one end of the metal tube in advance. At this time, the air inflation pump inflates the inside of the metal tube, enabling the air inside the metal tube to circulate rapidly. At the same time, the power motor 215 rotates in reverse, causing the welding mechanism 24 to rotate back, and the differential pressure detector 254 detects around the weld seam of the metal tube. If the weld seam is intact, there is no obvious change during the process of the differential pressure detector 254 rotating back to its original position. If there is a gap in the weld seam, when the differential pressure detector 254 rotates to the gap, due to the leakage of the gas flowing inside the metal tube through the gap, the air pressure at this place changes suddenly, thereby causing a reaction of the differential pressure detector 254. The differential pressure detector 254 issues an alarm, and the power motor 215 stops working, waiting for the staff to check and handle, so that the weld seam can be detected in time after welding, and the gap can be quickly located.

[0033] After welding, if the weld seam is intact, the welding mechanism 24 and the induction mechanism 25 rotate back to their original positions after welding is completed, the main controller 217 is turned off, and the electromagnetic strip 234 is de-energized and loses magnetism. At this time, the second lock 214 and the clamping upper frame 334 are opened to remove the metal tube; if there is a gap in the weld seam, after the staff come to mark the position, the power motor 215 can be selectively started again to make the welding mechanism 24 and the induction mechanism 25 rotate back to their original positions to complete the detection of the weld seam on the entire circumference. Finally, the main controller 217 is turned off, and the second lock 214 and the clamping upper frame 334 are opened to remove the metal tube.

[0034] It should be noted that the length of the connecting pipe 27 is sufficient to surround the metal tube with the maximum outer diameter for one week. When the welding mechanism 24 rotates, it does not affect the operation of the device, and no further description is given here.

[0035] The above is the overall workflow of the present invention. Repeat these steps the next time it is used.

[0036] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0037] The present invention and its embodiments have been described above. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, creatively design a structural mode and embodiments similar to this technical solution, they shall fall within the protection scope of the present invention.

Claims

1. A metal pipe butt welding device, comprising an operating table, characterized in that: The operating table is respectively provided with an open-and-closed welding detection component, an omnidirectional adjustable clamping component and a limiting mechanism, wherein the omnidirectional adjustable clamping component is symmetrically arranged on both sides of the open-and-closed welding detection component, and the limiting mechanism is arranged on the front side of the open-and-closed welding detection component; The opening and closing type welding detection integrated assembly comprises a control cover mechanism, a connecting frame mechanism, a detection frame mechanism, a welding mechanism and a sensing mechanism, wherein the control cover mechanism is arranged on an operating table, the connecting frame mechanism and the detection frame mechanism are respectively and movably arranged inside the control cover mechanism, the connecting frame mechanism and the detection frame mechanism are combined to form a ring, the welding mechanism is arranged on the connecting frame mechanism, the sensing mechanism is arranged on the detection frame mechanism, and the welding mechanism and the sensing mechanism are arranged opposite to each other; The omnidirectional adjustable clamping assembly includes a horizontal adjustment mechanism, a vertical adjustment mechanism and a rotating clamping mechanism. The horizontal adjustment mechanism is symmetrically arranged on both sides of the control cover mechanism, the vertical adjustment mechanism is movably arranged on the horizontal adjustment mechanism, and the rotating clamping mechanism is rotatably arranged on the vertical adjustment mechanism.

2. A metal pipe butt welding device according to claim 1, characterized in that: The control cover mechanism includes a control column, a lower support frame, an upper support frame, a power motor and a power wheel. The control column is arranged on the operating table, and an air pump is arranged on the inner side of the control column. The lower support frame is arranged at the upper end of the control column, and the upper support frame is rotatably arranged on the upper part of the lower support frame. The lower support frame and the upper support frame are combined to form a ring. A second lock is arranged on the side of the lower support frame and the upper support frame away from the control column. The power motor is arranged on the control column, and the power wheel penetrates the inner wall of the lower support frame and is rotatably arranged inside the upper end of the control column, and the power wheel is electrically connected to the output end of the power motor.

3. A metal pipe butt welding device according to claim 2, characterized in that: The connecting frame mechanism includes a first slide plate, a first power connecting rod, a magnetic strip and a first carrier, the first slide plate is symmetrically slidably arranged on the inner side wall of the upper support frame, the first power connecting rod is evenly connected between the symmetrical first slide plates, the two ends of the symmetrical first slide plates are respectively connected to the first half rods, the magnetic strip is embedded in the first half rods, the first carrier is connected to the inner center of the symmetrical first slide plate, the side wall of the first carrier is provided with a through pipe, the through pipe extends to the inside of the first carrier, and a connecting pipe is connected between the through pipe and the control column; The detection frame mechanism includes a second slide plate, a second power connecting rod, an electromagnetic strip and a second carrier, the second slide plate is symmetrically slidably arranged on the inner side wall of the lower support frame, the first slide plate and the second slide plate on the same side are closed to form a full circle, the second power connecting rod is evenly connected between the symmetrical second slide plates, the two ends of the symmetrical second slide plates are respectively connected to the second half rods, the electromagnetic strip is embedded in the second half rod, the electromagnetic strip is correspondingly arranged with the attracting magnetic strip, and the second carrier is connected to the inner center of the symmetrical second slide plate; The first power connecting rod and the second power connecting rod have the same structure and size. The full circle formed by closing the first slide plate and the second slide plate rotates inside the upper support frame and the lower support frame. The size of the cylinder formed by the first half rod and the second half rod on the same side is equal to the size of the first power connecting rod. The power wheels are respectively meshed and transmission connected with the evenly distributed first power connecting rods and the second power connecting rods.

4. A metal pipe butt welding device according to claim 3, characterized in that: The welding mechanism includes a telescopic column, a supporting platform, a protective cover, a welding needle, a follower platform and a cooling pipe. The telescopic column is arranged on the first carrier, and the central axis of the telescopic column is in the same plane as the center of the first slide plate. The supporting platform is arranged at the movable end of the telescopic column. A compression spring is sleeved outside the telescopic column, and the compression spring is connected between the supporting platform and the first carrier. At the four corners of the end face of the supporting platform, supporting wheels are arranged. The protective cover is arranged on the supporting platform and is inside the supporting wheels. The welding needle is inserted into the supporting platform in an embedded manner, and the welding needle is concentrically arranged inside the protective cover.

5. A metal pipe butt welding device according to claim 4, characterized in that: The follower platform is rotatably arranged on the side of the supporting platform away from the control column. A torsion spring is arranged between the follower platform and the supporting platform. Limiting blocks are symmetrically arranged on both sides of the follower platform. On the end face of the follower platform facing the supporting platform, follower wheels are symmetrically arranged. The follower wheels are arranged at the end of the follower platform away from the supporting platform. The cooling pipe is connected between the first carrier and the follower platform, and the output end of the cooling pipe penetrates through the center of the follower platform. The cooling pipe is connected to the output end of the air blowing pump inside the control column through a through pipe and a connecting pipe.

6. A metal pipe butt welding device according to claim 5, characterized in that: The induction mechanism includes a three-stage telescopic rod, a covering cover and a differential pressure detector. The three-stage telescopic rod is arranged on the second carrier, and the central axis of the three-stage telescopic rod coincides with the central axis of the telescopic column. The covering cover is arranged at the movable end of the three-stage telescopic rod. A pressure spring is sleeved outside the three-stage telescopic rod, and the pressure spring is connected between the covering cover and the second carrier. The covering cover is provided with an open upper end. The differential pressure detector is embedded inside the covering cover. A pressure strip is arranged around the side of the covering cover away from the second carrier.

7. A metal pipe butt welding device according to claim 6, characterized in that: The horizontal adjustment mechanism includes a centering screw, an adjustment frame and a sliding screw. The centering screws are symmetrically arranged on both sides of the control housing mechanism and are embedded in the operating table. The adjustment frame is slidably arranged on the operating table. The lower part of the adjustment frame is meshingly sleeved on the centering screw. The sliding screw is embedded and rotatably arranged inside the adjustment frame, and the sliding screw is perpendicular to the centering screw. The vertical adjustment mechanism includes an adjustment block, an adjustment column, a lifting screw and a top plate. The adjustment block is meshingly sleeved on the sliding screw and slides inside the adjustment frame. The adjustment column is rotatably arranged on the adjustment block. The lifting screw is coaxially meshingly arranged on the upper part of the adjustment column. The top plate is arranged at the upper end of the lifting screw. A limiting telescopic column is connected between the top plate and the adjustment block, and the limiting telescopic columns are symmetrically arranged on both sides of the adjustment column.

8. A metal pipe butt welding device according to claim 7, characterized in that: The rotating clamping mechanism includes a rotating ring, a positioning bolt, a clamping lower seat and a clamping upper frame. The rotating ring is movably arranged on the upper part of the top plate. There are two rotating rings, and the two rotating rings are stacked in sequence. The positioning bolt penetrates through the rotating ring and is meshingly arranged on the top plate. The two clamping lower seats are respectively arranged on the side walls of the rotating ring, and the two clamping lower seats are distributed along the circumferential direction of the rotating ring. The inner side of the clamping lower seat is trapezoidal in reverse, and a rubber pad is arranged on the inner side wall of the clamping lower seat. The clamping upper frame is movably arranged on the upper part of the clamping lower seat. The clamping upper frame is in an inverted U shape. The clamping lower seat and the clamping upper frame are fixed by fastening screws.

9. A metal pipe butt welding device according to claim 8, characterized in that: The limiting mechanism includes a limiting stud, a limiting plate, an adjusting ring and a receiving rod, the limiting stud is vertically arranged on a side of the lower support frame away from the control column, the limiting plate is slidably sleeved on the limiting stud, the adjusting ring is rotatably arranged on the lower part of the limiting plate, the adjusting ring is meshed and sleeved on the limiting stud, the receiving rod is symmetrically arranged on the side wall of the limiting plate close to the lower support frame, the receiving rod is symmetrically arranged on both sides of the lower support frame, a scale is vertically arranged on one side of the limiting stud, the scale passes through the limiting plate, and a centering pointer is respectively arranged on the upper wall of the receiving rod, and the tip of the centering pointer is in the same plane as the center of the circular ring composed of the lower support frame and the upper support frame.

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