Pipeline welding device

Abstract

The invention is suitable for the technical field of pipeline welding, and provides a pipeline welding device which comprises a workbench and further comprises a belt conveyor and a cross beam frame which are installed at the upper end of the workbench, the belt conveyor is located below the cross beam frame, two welding heads are installed at the bottom of the cross beam frame through a support, and two first rolling wheels are rotationally connected to the bottom of the cross beam frame; each group of rollers I is provided with two rollers I; a concave bracket is vertically and slidably connected to the workbench and located below the cross beam frame, two sets of second rollers are rotatably connected to the upper end of the concave bracket and located on the two sides of the belt conveyor, the number of each set of second rollers is two, a first air cylinder is fixed to the lower end of the workbench, and the telescopic end of the first air cylinder is connected with the concave bracket. By means of the mode that the belt conveyor drives the pipeline to move horizontally and then the first air cylinder drives the concave bracket to move up and down, automatic feeding and discharging of the pipeline can be achieved, the pipeline is prevented from colliding with the clamp when the pipeline is hoisted and clamped, and the welding efficiency of the pipeline is also improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipeline welding, and particularly relates to a pipeline welding device. Background Art

[0002] During the pipeline production process, flange plates need to be welded at both ends of the pipeline for connecting two adjacent pipelines during subsequent pipeline use.

[0003] When welding the flange plates at both ends of the pipeline, generally, the pipeline is hoisted onto the fixture, and then through the corresponding fixture, the two flange plates are fixed at both ends of the pipeline. Then, the worker holds the welding gun to perform welding operations on the flange plates at both ends of the pipeline in sequence. After welding, the worker removes the welded pipeline and flange plates from the fixture, and then transports the welded pipeline away from the fixture through the hoisting device.

[0004] When welding the pipeline by the above method, a hoisting device is required to carry the flange plates before and after pipeline welding. When the pipeline is hoisted on the fixture, it is easy to collide with the fixture. After the fixture is damaged, it affects the welding accuracy of the pipeline. Moreover, the pipeline hoisting operation is complex, resulting in time-consuming clamping and disassembling of the pipeline, which affects the pipeline welding efficiency. Summary of the Invention

[0005] An object of an embodiment of the present invention is to provide a pipeline welding device, aiming at solving the problems that when the pipeline is hoisted on the fixture, it is easy to collide with the fixture, after the fixture is damaged, it affects the welding accuracy of the pipeline, and the pipeline hoisting operation is complex, resulting in time-consuming clamping and disassembling of the pipeline, which affects the pipeline welding efficiency.

[0006] The present invention is implemented as follows. A pipeline welding device includes a workbench, and further includes: a belt conveyor and a cross beam frame installed at the upper end of the workbench. The belt conveyor is located below the cross beam frame. Two welding heads are installed at the bottom of the cross beam frame through brackets, and two groups of rollers 1 are rotatably connected to the bottom of the cross beam frame. Each group of rollers 1 has two rollers. A concave bracket is vertically slidably connected to the workbench. The concave bracket is located below the cross beam frame. Two groups of rollers 2 are rotatably connected to the upper end of the concave bracket. The two groups of rollers 2 are located on both sides of the belt conveyor. Each group of rollers 2 has two rollers. A cylinder 1 is fixed to the lower end of the workbench. The telescopic end of the cylinder 1 is connected to the concave bracket. Two guide grooves 1 are provided on the cross beam frame. A sliding plate is slidably connected in each of the two guide grooves 1. Two cylinders 2 are fixed to the cross beam frame. The telescopic ends of the two cylinders 2 are respectively connected to the two sliding plates. An installation ring is rotatably connected to each of the two sliding plates. A centering clamping assembly is provided on each of the two installation rings. The centering clamping assembly is used to fix the flange. Positioning heads are provided on both opposite sides of the two sliding plates. The positioning heads are coaxially arranged with the installation rings. A reverse driving assembly is provided on the workbench. The reverse driving assembly is used to drive the two positioning heads to move in the opposite direction. A rotating assembly is provided on the cross beam frame. The rotating assembly is used to drive the positioning heads and the installation rings to rotate.

[0007] Further technical solution: The reverse driving assembly includes two groups of guide grooves 2 provided on the workbench. Each group of guide grooves 2 has two guide grooves. A moving vertical plate is slidably connected to each group of guide grooves 2. A transmission disc is rotatably connected to each of the two moving vertical plates. The two positioning heads are respectively fixedly connected to the two transmission discs. A rack is fixed to the bottom of each of the two moving vertical plates. A gear is rotatably connected to the bottom of the workbench. The gear meshes with the two racks. A support frame is fixed to the bottom of the workbench. A motor 2 is fixed to the bottom of the support frame. The rotating end of the motor 2 is connected to the gear.

[0008] Further technical solution: The rotating assembly includes driving sleeves rotatably connected to the opposite inner walls of the cross beam frame. The two positioning heads are respectively slidably connected in the two driving sleeves. Motors 1 are fixed to the front and rear sides of the cross beam frame. The rotating ends of the two motors 1 are respectively connected to the two driving sleeves. A transmission shaft is fixed to the installation ring. The transmission shaft is slidably connected to the transmission disc.

[0009] Further technical solution: The centering and clamping assembly includes an installation ring, one end of which is slidably connected to two clamping jaws. One end of each of the two clamping jaws facing the axis of the installation ring is V-shaped. The other end of the installation ring is rotatably connected to a driving ring. The driving ring is provided with two driving inclined grooves and two arc-shaped avoidance grooves for avoiding the transmission shaft. One end of the clamping jaw is fixed with a mating shaft one, and the mating shaft one is slidably connected in the driving inclined groove. A cylinder three is rotatably connected to the installation ring, and the telescopic end of the cylinder three is rotatably connected inside the driving ring.

[0010] Further technical solution: Two feeding mechanisms are arranged on the workbench. The feeding mechanism includes a V-shaped feeding hopper fixed to the upper end of the workbench and a pushing plate slidably connected vertically on the workbench. A pushing groove is arranged on the pushing plate. A cylinder four is fixed to the bottom of the workbench, and the telescopic end of the cylinder four is connected to the pushing plate. A guiding groove three is arranged at the bottom of the V-shaped feeding hopper. A pressing plate is slidably connected in the guiding groove three. A driving lead screw is rotatably connected to the bottom of the workbench, and the driving lead screw is threadedly connected to the pressing plate. A motor three is fixed to the side wall of the workbench, and the rotating end of the motor three is connected to the driving lead screw. An electromagnet is fixed to the side of the pushing plate away from the pushing groove.

[0011] Further technical solution: A horizontal guiding chute one is arranged in the pushing groove. A grinding block one is slidably connected in the guiding chute one. One end of the grinding block one close to the electromagnet is fixed with an iron block and a compression spring one, and the end of the compression spring one is fixed inside the guiding chute one. A fixing rod is fixed to the sliding plate, and a grinding block two is slidably connected to the fixing rod. A compression spring two is connected between the grinding block two and the fixing rod.

[0012] Further technical solution: Two groups of fixing brackets are fixed to the bottom of the cross beam frame. Each group of fixing brackets has two. A guiding groove four is arranged on the fixing bracket. The included angle between the two guiding grooves four on each group of fixing brackets is 90°. A sliding frame is slidably connected in the guiding groove four. A roller one is rotatably connected to the end of the sliding frame. A mating shaft two is fixed to the side wall of the sliding frame. Two guiding shafts slide vertically on the cross beam frame. The lower ends of the two guiding shafts are fixed with an adjusting plate. A long hole is arranged on the side wall of the adjusting plate. The mating shaft two is slidably connected in the long hole. An adjusting lead screw is threadedly connected to the cross beam frame, and the lower end of the adjusting lead screw is rotatably connected to the upper end of the adjusting plate.

[0013] Further technical solution: A displacement sensor is fixed to the bottom of the sliding plate.

[0014] Compared with the prior art, the beneficial effects of the present invention:

[0015] 1. The belt conveyor drives the pipe to move horizontally, and then the cylinder 1 drives the concave bracket to move up and down, which can realize the automatic loading and unloading of the pipe. Furthermore, when hoisting and clamping the pipe, the pipe hitting the fixture can be avoided, and the welding efficiency of the pipe can also be improved;

[0016] 2. The cylinder 2 drives the centering clamping component to move, which realizes the automatic positioning before welding the flange and the pipe, thus improving the welding precision of the pipe;

[0017] 3. Through the settings of the belt conveyor and the feeding mechanism, the automatic feeding of the pipe and the flange can be realized, and the welding efficiency of the pipe can be improved;

[0018] 4. When the installation ring drives the flange to rotate, the flange rotates relative to the grinding block 1, and the grinding block 1 grinds the welded part at the end of the flange, so that the welded part between the flange and the pipe remains clean, thereby improving the welding efficiency of the pipe;

[0019] 5. Adjust the position of the roller 1, so that when the four rollers 1 and the four rollers 2 clamp the pipe, the axial position of the pipe can be adjusted, enabling pipes with different diameters to be in the welding position;

[0020] 6. When the positioning head drives the pipe to rotate, the displacement sensor measures the surface runout of the pipe side wall, and then detects whether there are residual impurities on the pipe side wall making it uneven, and checks whether the grinding of the pipe side wall is completed. The displacement sensor can also detect whether the adjustment of the roller 1 position is completed by measuring the surface runout of the pipe side wall, making the pipe axis coincide with the installation ring axis, and improving the welding quality of the pipe. Brief Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of a pipe welding device provided by the present invention;

[0022] Figure 2 is provided by the present invention Figure 1 a schematic structural diagram of the upward viewing tilt angle;

[0023] Figure 3 is provided by the present invention Figure 1 a schematic structural diagram of the workbench and the crossbeam frame in;

[0024] Figure 4 is provided by the present invention Figure 1 a schematic structural diagram after removing the workbench and the crossbeam frame;

[0025] Figure 5 is provided by the present invention Figure 3 a schematic structural diagram of the reverse drive component and the rotating component in;

[0026] Figure 6 is provided by the present invention Figure 3Schematic structural diagram of the center-to-center clamping assembly and the feeding mechanism;

[0027] Figure 7 Provided by the present invention Figure 6 Schematic structural diagram of the center-to-center clamping assembly;

[0028] Figure 8 Provided by the present invention Figure 7 Schematic structural diagram of the rear side angle;

[0029] Figure 9 Provided by the present invention Figure 6 Schematic structural diagram of the feeding mechanism in the present invention;

[0030] Figure 10 Provided by the present invention Figure 9 Schematic internal structure diagram of the push plate in the present invention;

[0031] Figure 11 Provided by the present invention Figure 4 Schematic connection structure diagram of the adjusting plate in the present invention.

[0032] In the drawings: 101, workbench; 102, belt conveyor; 103, cross beam frame; 104, welding head; 105, roller one; 106, concave bracket; 107, roller two; 108, cylinder one; 109, positioning head; 110, guide groove one; 111, sliding plate; 112, cylinder two; 113, mounting ring; 114, displacement sensor;

[0033] 2. Reverse drive assembly; 201, guide groove two; 202, moving vertical plate; 203, transmission disk; 204, rack; 205, gear; 206, support frame; 207, motor two;

[0034] 3. Rotating assembly; 301, drive sleeve; 302, motor one; 303, transmission shaft; 4. Center-to-center clamping assembly; 401, jaw; 402, drive ring; 403, drive inclined groove; 404, mating shaft one; 405, cylinder three; 406, arc-shaped avoidance groove;

[0035] 5. Feeding mechanism; 501, V-shaped feeding hopper; 502, push plate; 503, push groove; 504, cylinder four; 505, guide groove three; 506, pressing plate; 507, drive lead screw; 508, motor three; 509, electromagnet;

[0036] 601, fixed bracket; 602, guide groove four; 603, sliding frame; 604, mating shaft two; 605, adjusting plate; 606, guide shaft; 607, long hole; 608, adjusting lead screw; 701, guide sliding groove one; 702, grinding block one; 703, compression spring one; 704, fixed rod; 705, grinding block two. Detailed implementation manners

[0037] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0039] As Figures 1 - 6 shown, a pipeline welding device provided by an embodiment of the present invention includes a workbench 101, and further includes: a belt conveyor 102 and a cross beam frame 103 installed at the upper end of the workbench 101. The belt conveyor 102 is located below the cross beam frame 103. Two welding heads 104 are installed at the bottom of the cross beam frame 103 through brackets, and two groups of rollers 105 are rotatably connected to the bottom of the cross beam frame 103. Each group of rollers 105 has two; a concave bracket 106 is vertically slidably connected to the workbench 101. The concave bracket 106 is located below the cross beam frame 103. Two groups of rollers 107 are rotatably connected to the upper end of the concave bracket 106. The two groups of rollers 107 are located on both sides of the belt conveyor 102. Each group of rollers 107 has two. A cylinder 108 is fixed to the lower end of the workbench 101. The telescopic end of the cylinder 108 is connected to the concave bracket 106; two guide grooves 110 are provided on the cross beam frame 103. A sliding plate 111 is slidably connected in each of the two guide grooves 110. Two cylinders 112 are fixed to the cross beam frame 103. The telescopic ends of the two cylinders 112 are respectively connected to the two sliding plates 111. Mounting rings 113 are rotatably connected to the two sliding plates 111; a centering clamping assembly 4 is provided on each of the two mounting rings 113. The centering clamping assembly 4 is used to fix the flange. Positioning heads 109 are provided on both opposite sides of the two sliding plates 111. The positioning heads 109 are coaxial with the mounting rings 113. A reverse driving assembly 2 is provided on the workbench 101. The reverse driving assembly 2 is used to drive the two positioning heads 109 to move in the opposite direction. A rotating assembly 3 is provided on the cross beam frame 103. The rotating assembly 3 is used to drive the positioning heads 109 and the mounting rings 113 to rotate.

[0040] In the embodiment of the present invention, during use, the belt conveyor 102 is used to convey the pipeline. When the pipeline is conveyed below the cross beam frame 103, the first cylinder 108 extends, and the first cylinder 108 drives the concave bracket 106 to move upward. The four rollers II 107 on the concave bracket 106 lift the pipeline until the four rollers I 105 on the cross beam frame 103 contact the upper part of the pipeline. The four rollers II 107 and the four rollers I 105 clamp the pipeline. Place two flange plates on the two centering and clamping assemblies 4, and the two centering and clamping assemblies 4 respectively center and clamp the two flange plates. At this time, the flange plates and the pipeline are coaxial. The reverse driving assembly 2 drives the two positioning heads 109 to move towards each other, and the two positioning heads 109 correct and clamp the front and rear positions of the pipeline. The second cylinder 112 extends, and the second cylinder 112 drives the sliding plate 111 to move. The sliding plate 111 drives the flange plate to move towards the pipeline through the centering and clamping assembly 4 until the flange plate is sleeved on the end of the pipeline. The rotating assembly 3 drives the positioning head 109 and the mounting ring 113 to rotate. The positioning head 109 drives the pipeline to rotate, and the mounting ring 113 drives the flange plate to rotate, so that the pipeline and the flange plate rotate synchronously. The welding head 104 welds the weld between the flange plate and the pipeline until the welding of the pipeline is completed. The centering and clamping assembly 4 releases the flange plate. The second cylinder 112 contracts, and the second cylinder 112 drives the sliding plate 111 to move in the reverse direction. The sliding plate 111 drives the mounting ring 113 and the centering and clamping assembly 4 to move in the reverse direction and reset. The reverse driving assembly 2 drives the two positioning heads 109 to move in the reverse direction and reset. The first cylinder 108 contracts, and the first cylinder 108 drives the concave bracket 106 to move downward. The four rollers II 107 on the concave bracket 106 place the pipeline on the belt conveyor 102, and the belt conveyor 102 drives the welded pipeline away from below the cross beam frame 103, thus completing the welding of one pipeline. By means of driving the concave bracket 106 to move up and down by the first cylinder 108, automatic loading and unloading of the pipeline can be realized, thereby avoiding the pipeline hitting the fixture during pipeline hoisting and clamping, and also improving the welding efficiency of the pipeline. And by means of driving the centering and clamping assembly 4 to move by the second cylinder 112, automatic positioning before welding the flange plate and the pipeline is realized, thereby improving the welding precision of the pipeline.

[0041] Such as Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, as a preferred embodiment of the present invention, the reverse drive assembly 2 includes two sets of second guide grooves 201 provided on the workbench 101. Each set of second guide grooves 201 has two. A moving vertical plate 202 is slidably connected to each set of second guide grooves 201. A transmission disc 203 is rotatably connected to each of the two moving vertical plates 202. The two positioning heads 109 are respectively fixedly connected to the two transmission discs 203. A rack 204 is fixed to the bottom of each of the two moving vertical plates 202. A gear 205 is rotatably connected to the bottom of the workbench 101. The gear 205 meshes with the two racks 204. A support frame 206 is fixed to the bottom of the workbench 101. A second motor 207 is fixed to the bottom of the support frame 206. The rotating end of the second motor 207 is connected to the gear 205.

[0042] In the embodiment of the present invention, the second motor 207 drives the gear 205 to rotate. The gear 205 drives the two racks 204 to move towards each other. The two racks 204 drive the two moving vertical plates 202 to move towards each other. The two moving vertical plates 202 drive the two transmission discs 203 to move towards each other. The two transmission discs 203 drive the two positioning heads 109 to move towards each other. The two positioning heads 109 correct and clamp the pipeline. The second motor 207 drives the gear 205 to rotate in reverse. The gear 205 drives the two racks 204 to move in the opposite direction. The two racks 204 drive the two moving vertical plates 202 to move in the opposite direction. The two moving vertical plates 202 drive the two transmission discs 203 to move in the opposite direction. The two transmission discs 203 drive the two positioning heads 109 to move in the opposite direction. The two positioning heads 109 move away from the pipeline.

[0043] As Figures 3 - 7 shown, as a preferred embodiment of the present invention, the rotating assembly 3 includes drive sleeves 301 rotatably connected to the opposite inner walls of the cross beam frame 103. The two positioning heads 109 are respectively slidably connected to the two drive sleeves 301. The front and rear sides of the cross beam frame 103 are both fixed with a first motor 302. The rotating ends of the two first motors 302 are respectively connected to the two drive sleeves 301. A transmission shaft 303 is fixed to the mounting ring 113. The transmission shaft 303 is slidably connected to the transmission disc 203.

[0044] In the embodiment of the present invention, the first motor 302 drives the drive sleeve 301 to rotate. The drive sleeve 301 drives the positioning head 109 to rotate. The positioning head 109 drives the transmission disc 203 to rotate. The transmission disc 203 drives the mounting ring 113 to rotate through the transmission shaft 303.

[0045] As Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, as a preferred embodiment of the present invention, the centering and clamping assembly 4 includes two clamping jaws 401 slidably connected to one end of the mounting ring 113. One end of each of the two clamping jaws 401 facing the axis of the mounting ring 113 is V-shaped. The other end of the mounting ring 113 is rotatably connected to a driving ring 402. Two driving inclined slots 403 and two arc-shaped avoidance slots 406 are provided on the driving ring 402. The arc-shaped avoidance slots 406 are used to avoid the transmission shaft 303. One end of the clamping jaw 401 is fixed with a mating shaft one 404. The mating shaft one 404 is slidably connected in the driving inclined slot 403. A cylinder three 405 is rotatably connected to the mounting ring 113. The telescopic end of the cylinder three 405 is rotatably connected inside the driving ring 402.

[0046] In the embodiment of the present invention, the flange is placed between the two clamping jaws 401. The cylinder three 405 extends, and the cylinder three 405 drives the driving ring 402 to rotate. The rotating driving ring 402 pushes the mating shaft one 404 through the driving inclined slot 403. The mating shaft one 404 drives the clamping jaw 401 to move, and the two clamping jaws 401 center and clamp the flange; the cylinder three 405 contracts, the cylinder three 405 drives the driving ring 402 to reverse, and the reversing driving ring 402 pushes the mating shaft one 404 away from the axis of the mounting ring 113 through the driving inclined slot 403. The mating shaft one 404 drives the clamping jaw 401 to move away from the axis of the mounting ring 113, and the two clamping jaws 401 release the flange.

[0047] As Figure 4 、 Figure 6 、 Figure 8 、 Figure 9 and Figure 10 As shown, as a preferred embodiment of the present invention, two feeding mechanisms 5 are provided on the workbench 101. The feeding mechanism 5 includes a V-shaped feeding hopper 501 fixed to the upper end of the workbench 101, and a pushing plate 502 slidably connected vertically on the workbench 101. A pushing slot 503 is provided on the pushing plate 502. A cylinder four 504 is fixed to the bottom of the workbench 101. The telescopic end of the cylinder four 504 is connected to the pushing plate 502. A guiding slot three 505 is provided at the bottom of the V-shaped feeding hopper 501. A pressing plate 506 is slidably connected in the guiding slot three 505. A driving lead screw 507 is rotatably connected to the bottom of the workbench 101. The driving lead screw 507 is threadedly connected to the pressing plate 506. A motor three 508 is fixed to the side wall of the workbench 101. The rotating end of the motor three 508 is connected to the driving lead screw 507. An electromagnet 509 is fixed to the side of the pushing plate 502 away from the pushing slot 503.

[0048] In an embodiment of the present invention, a plurality of flanges are placed in the V-shaped feeding hopper 501. The motor three 508 drives the driving screw rod 507 to rotate. The driving screw rod 507 drives the pressing plate 506 to move through a threaded transmission manner. The pressing plate 506 pushes the plurality of flanges to move, so that one of the flanges enters the pushing groove 503. The depth of the pushing groove 503 is less than the thickness of the flange. The electromagnet 509 is energized, and the electromagnet 509 adsorbs the flange, so that the flange in the pushing groove 503 is closely attached to the inner wall of the pushing groove 503. The cylinder four 504 extends, and the cylinder four 504 drives the pushing plate 502 to move upward. The pushing plate 502 drives one of the flanges to move upward. At this time, the two jaws 401 are in a horizontal state, and the flange extends between the two jaws 401. The two jaws 401 center-align and clamp the flange. The electromagnet 509 is de-energized, and the cylinder four 504 contracts. The cylinder four 504 drives the pushing plate 502 to move downward and reset. The motor three 508 drives the driving screw rod 507 to rotate. The driving screw rod 507 drives the pressing plate 506 to move through a threaded transmission manner. The pressing plate 506 pushes the next flange into the pushing groove 503, realizing the automatic feeding of the flange.

[0049] As Figure 7 , Figure 8 and Figure 10 shown, as a preferred embodiment of the present invention, a horizontal guiding chute one 701 is provided in the pushing groove 503. A grinding block one 702 is slidably connected in the guiding chute one 701. One end of the grinding block one 702 close to the electromagnet 509 is fixed with an iron block and a compression spring one 703. The end of the compression spring one 703 is fixed in the guiding chute one 701. A fixed rod 704 is fixed on the sliding plate 111. A grinding block two 705 is slidably connected on the fixed rod 704. A compression spring two is connected between the grinding block two 705 and the fixed rod 704.

[0050] In the embodiment of the present invention, when the pipeline moves upward to the welding position, the second compression spring in the fixing rod 704 pushes the second grinding block 705 to contact the pipeline. When the positioning head 109 drives the pipeline to rotate, the second grinding block 705 grinds the welding part on the side wall of the pipeline, removing rust and other impurities at the welding part on the side wall of the pipeline. When the sliding plate 111 moves, the sliding plate 111 drives the fixing rod 704 and the second grinding block 705 away from the welding part of the pipeline, preventing the second grinding block 705 from over-grinding the welding part of the pipeline during pipeline welding; when the pushing plate 502 drives the flange to move upward, the electromagnet 509 is energized, and the electromagnet 509 overcomes the elastic force of the first compression spring 703 and drives the first grinding block 702 to retract into the pushing plate 502. After the two clamping jaws 401 clamp the flange, the electromagnet 509 is de-energized, and the first compression spring 703 pushes the first grinding block 702 against the end welding part of the flange. When the mounting ring 113 drives the flange to rotate, the flange rotates relative to the first grinding block 702, and the first grinding block 702 grinds the end welding part of the flange, keeping the welding part between the flange and the pipeline clean, thereby improving the welding efficiency of the pipeline. The electromagnet 509 is energized, the electromagnet 509 overcomes the elastic force of the first compression spring 703 and drives the first grinding block 702 to retract into the pushing plate 502, and the pushing plate 502 moves downward and resets.

[0051] As Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 9 , Figure 10 and Figure 11 shown, as a preferred embodiment of the present invention, two groups of fixing brackets 601 are fixed to the bottom of the cross beam frame 103, and each group of fixing brackets 601 has two. A fourth guiding groove 602 is provided on the fixing bracket 601, and the angle between the two fourth guiding grooves 602 on each group of fixing brackets 601 is 90°. A sliding frame 603 is slidably connected in the fourth guiding groove 602, and the first roller 105 is rotatably connected to the end of the sliding frame 603. A second matching shaft 604 is fixed to the side wall of the sliding frame 603. Two guiding shafts 606 slide vertically on the cross beam frame 103, and an adjusting plate 605 is fixed to the lower ends of the two guiding shafts 606. A long hole 607 is provided on the side wall of the adjusting plate 605, and the second matching shaft 604 is slidably connected in the long hole 607. An adjusting screw rod 608 is threadedly connected to the cross beam frame 103, and the lower end of the adjusting screw rod 608 is rotatably connected to the upper end of the adjusting plate 605.

[0052] In the embodiment of the present invention, when welding pipes with different diameters, the adjusting screw rod 608 is rotated. The adjusting screw rod 608 drives the adjusting plate 605 to move up and down through a threaded drive. The adjusting plate 605 pushes the guide shaft 606 through the long hole 607, and the guide shaft 606 drives the sliding frame 603 to move, thereby adjusting the position of the first roller 105. When the four first rollers 105 and the four second rollers 107 clamp the pipe, the axial position of the pipe can be adjusted so that pipes with different diameters can be in the welding position, that is, the axis of the pipe coincides with the axis of the mounting ring 113. The ends of the two positioning heads 109 are conical, so that the positioning heads 109 can clamp pipes with different diameters (when the diameter of the positioning heads 109 is larger than the inner diameter of the flange, the two positioning heads 109 pass through the mounting ring 113, first clamp and drive the pipe to rotate, so that the second grinding block 705 cleans the welding part on the side wall of the pipe, and then the two positioning heads 109 move in the opposite direction and withdraw from the center of the mounting ring 113. The centering and clamping assembly 4 on the mounting ring 113 clamps the flange and drives the flange to sleeve on the welding part of the pipe. At this time, the two positioning heads 109 move towards each other again and clamp the pipe, thereby preventing the positioning heads 109 from passing through the center of the flange). The V-shaped feeding hopper 501 is V-shaped and can feed flanges with different diameters, thereby realizing the welding of pipes with different diameters.

[0053] As Figure 8 shown, as a preferred embodiment of the present invention, a displacement sensor 114 is fixed to the bottom of the sliding plate 111.

[0054] In the embodiment of the present invention, when the positioning head 109 drives the pipe to rotate, the displacement sensor 114 measures the surface runout of the pipe side wall, thereby detecting whether there are residual impurities on the pipe side wall and making it uneven, checking whether the grinding of the pipe side wall is completed. The displacement sensor 114 can also detect whether the position adjustment of the first roller 105 is completed by measuring the surface runout of the pipe side wall, so that the axis of the pipe coincides with the axis of the mounting ring 113, improving the welding quality of the pipe.

[0055] In the above embodiment of the present invention, a pipe welding device is provided. When in use, the belt conveyor 102 conveys the pipe. When the pipe is conveyed below the cross beam frame 103, the first cylinder 108 extends, and the first cylinder 108 drives the concave bracket 106 to move upward. The four second rollers 107 on the concave bracket 106 lift the pipe until the four first rollers 105 on the cross beam frame 103 contact the upper part of the pipe. The four second rollers 107 and the four first rollers 105 clamp the pipe, and the second compression spring in the fixed rod 704 pushes the second grinding block 705 to contact the pipe;

[0056] Place multiple flanges in the V-shaped feeder hopper 501. The third motor 508 drives the driving lead screw 507 to rotate. The driving lead screw 507 drives the pressing plate 506 to move through a threaded transmission method. The pressing plate 506 pushes the multiple flanges to move, enabling one of the flanges to enter the pushing groove 503. The depth of the pushing groove 503 is less than the thickness of the flange. The electromagnet 509 is energized, and the electromagnet 509 adsorbs the flange, causing the flange in the pushing groove 503 to closely adhere to the inner wall of the pushing groove 503. The fourth cylinder 504 extends, and the fourth cylinder 504 drives the pushing plate 502 to move upward. The pushing plate 502 drives one of the flanges to move upward. At this time, the two jaws 401 are in a horizontal state, and the flange extends between the two jaws 401. The third cylinder 405 extends, and the third cylinder 405 drives the driving ring 402 to rotate. The rotating driving ring 402 pushes the mating shaft one 404 through the driving inclined groove 403. The mating shaft one 404 drives the jaw 401 to move, and the two jaws 401 center-align and clamp the flange. The electromagnet 509 is de-energized, and the first compression spring 703 pushes the first grinding block 702 against the end welding joint of the flange. The first motor 302 drives the driving sleeve 301 to rotate. The driving sleeve 301 drives the positioning head 109 to rotate. The positioning head 109 drives the transmission disc 203 to rotate. When the transmission disc 203 drives the mounting ring 113 to rotate through the transmission shaft 303 and the mounting ring 113 drives the flange to rotate, the flange rotates relative to the first grinding block 702, and the first grinding block 702 grinds the end welding joint of the flange, keeping the welding joint between the flange and the pipeline clean, thereby improving the welding efficiency of the pipeline. The electromagnet 509 is energized, and the electromagnet 509 overcomes the elastic force of the first compression spring 703 and drives the first grinding block 702 to retract into the pushing plate 502. The pushing plate 502 moves downward and resets;

[0057] The second motor 207 drives the gear 205 to rotate. The gear 205 drives the two racks 204 to move towards each other. The two racks 204 drive the two moving vertical plates 202 to move towards each other. The two moving vertical plates 202 drive the two transmission discs 203 to move towards each other. The two transmission discs 203 drive the two positioning heads 109 to move towards each other. The two positioning heads 109 center-align and clamp the pipeline. When the positioning head 109 drives the pipeline to rotate, the second grinding block 705 grinds the welding joint on the side wall of the pipeline, removing rust and other impurities at the welding joint on the side wall of the pipeline. The displacement sensor 114 measures the surface runout of the side wall of the pipeline, and then detects whether there are residual impurities and unevenness on the side wall of the pipeline, and checks whether the grinding of the side wall of the pipeline is complete;

[0058] Cylinder two 112 extends, driving the sliding plate 111 to move. The sliding plate 111 drives the fixed rod 704 and the grinding block two 705 away from the welding joint of the pipeline, preventing the grinding block two 705 from over-grinding the welding joint of the pipeline during pipeline welding. The sliding plate 111 drives the flange plate towards the pipeline through the centering clamping assembly 4 until the flange plate sleeves on the end of the pipeline. The rotating assembly 3 drives the positioning head 109 and the mounting ring 113 to rotate. The positioning head 109 drives the pipeline to rotate, and the mounting ring 113 drives the flange plate to rotate, enabling the pipeline and the flange plate to rotate synchronously. The welding head 104 welds the weld between the flange plate and the pipeline until the pipeline welding is completed. The centering clamping assembly 4 releases the flange plate. Cylinder two 112 contracts, driving the sliding plate 111 to move in the reverse direction. The sliding plate 111 drives the mounting ring 113 and the centering clamping assembly 4 to move in the reverse direction and reset. The reverse driving assembly 2 drives the two positioning heads 109 to move in the reverse direction and reset. Cylinder one 108 contracts, driving the concave bracket 106 to move downward. The four rollers two 107 on the concave bracket 106 place the pipeline on the belt conveyor 102. The belt conveyor 102 drives the welded pipeline away from under the cross beam frame 103, thus completing the welding of one pipeline. By driving the concave bracket 106 to move up and down through cylinder one 108, automatic loading and unloading of the pipeline can be achieved, avoiding the pipeline hitting the fixture during pipeline hoisting and clamping, and also improving the welding efficiency of the pipeline. Moreover, by driving the centering clamping assembly 4 to move through cylinder two 112, automatic positioning before welding the flange plate and the pipeline is realized, thereby improving the welding precision of the pipeline.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipeline welding device, comprising a workbench, characterized in that, It also includes: A belt conveyor and a crossbeam frame installed at the upper end of the workbench. The belt conveyor is located below the crossbeam frame. Two welding heads are installed at the bottom of the crossbeam frame through brackets, and two groups of rollers I are rotatably connected to the bottom of the crossbeam frame. Each group of rollers I has two rollers. A concave bracket is vertically slidably connected to the workbench. The concave bracket is located below the crossbeam frame. Two groups of rollers II are rotatably connected to the upper end of the concave bracket. The two groups of rollers II are located on both sides of the belt conveyor. Each group of rollers II has two rollers. A cylinder I is fixed to the lower end of the workbench, and the telescopic end of the cylinder I is connected to the concave bracket. Two guide grooves I are provided on the crossbeam frame. Sliding plates are slidably connected in the two guide grooves I. Two cylinders II are fixed to the crossbeam frame, and the telescopic ends of the two cylinders II are respectively connected to the two sliding plates. Mounting rings are rotatably connected to the two sliding plates. Centering clamping assemblies are provided on the two mounting rings. The centering clamping assemblies are used to fix the flange. Positioning heads are provided on both opposite sides of the two sliding plates. The positioning heads are coaxially arranged with the mounting rings. A reverse driving assembly is provided on the workbench. The reverse driving assembly is used to drive the two positioning heads to move in the opposite direction. A rotating assembly is provided on the crossbeam frame. The rotating assembly is used to drive the positioning heads and the mounting rings to rotate.

2. The pipe welding device according to claim 1, wherein The reverse driving assembly includes two groups of guide grooves II provided on the workbench. Each group of guide grooves II has two guide grooves. Moving vertical plates are slidably connected to each group of guide grooves II. Transmission discs are rotatably connected to the two moving vertical plates. The two positioning heads are respectively fixedly connected to the two transmission discs. Rack bars are fixed to the bottoms of the two moving vertical plates. A gear is rotatably connected to the bottom of the workbench. The gear meshes with the two rack bars. A support frame is fixed to the bottom of the workbench. A motor II is fixed to the bottom of the support frame. The rotating end of the motor II is connected to the gear.

3. The pipeline welding device according to claim 2, characterized in that, The rotating assembly includes driving sleeves rotatably connected to the opposite inner walls of the crossbeam frame. The two positioning heads are respectively slidably connected in the two driving sleeves. Motors I are fixed to the front and rear sides of the crossbeam frame. The rotating ends of the two motors I are respectively connected to the two driving sleeves. A transmission shaft is fixed to the mounting ring. The transmission shaft is slidably connected to the transmission disc.

4. The pipeline welding device according to claim 3, characterized in that, The centering clamping assembly includes two jaws slidably connected to one end of the mounting ring. The ends of the two jaws facing the axis of the mounting ring are both V-shaped. A driving ring is rotatably connected to the other end of the mounting ring. Two driving inclined grooves and two arc-shaped avoidance grooves are provided on the driving ring. The arc-shaped avoidance grooves are used to avoid the transmission shaft. A mating shaft I is fixed to one end of the jaw. The mating shaft I is slidably connected in the driving inclined groove. A cylinder III is rotatably connected to the mounting ring. The telescopic end of the cylinder III is rotatably connected in the driving ring.

5. The pipeline welding device according to claim 4, wherein, Two feeding mechanisms are provided on the workbench. The feeding mechanism includes a V-shaped feeding hopper fixed to the upper end of the workbench, and a pushing plate vertically slidably connected to the workbench. A pushing groove is provided on the pushing plate. A cylinder IV is fixed to the bottom of the workbench. The telescopic end of the cylinder IV is connected to the pushing plate. A guide groove III is provided at the bottom of the V-shaped feeding hopper. A pressing plate is slidably connected in the guide groove III. A driving lead screw is rotatably connected to the bottom of the workbench. The driving lead screw is threadedly connected to the pressing plate. A motor III is fixed to the side wall of the workbench. The rotating end of the motor III is connected to the driving lead screw. An electromagnet is fixed to the side of the pushing plate away from the pushing groove.

6. The pipeline welding device according to claim 5, characterized in that, A horizontal guiding chute 1 is arranged in the pushing groove. A grinding block 1 is slidably connected in the guiding chute 1. One end of the grinding block 1 close to the electromagnet is fixed with an iron block and a compression spring 1. The end of the compression spring 1 is fixed in the guiding chute 1. A fixed rod is fixed on the sliding plate. A grinding block 2 is slidably connected on the fixed rod. A compression spring 2 is connected between the grinding block 2 and the fixed rod.

7. The pipeline welding device according to claim 1, characterized in that, Two groups of fixed brackets are fixed at the bottom of the crossbeam frame. Each group of fixed brackets has two. A guiding chute 4 is arranged on the fixed bracket. The included angle between the two guiding chutes 4 on each group of fixed brackets is 90°. A sliding frame is slidably connected in the guiding chute 4. A roller 1 is rotatably connected at the end of the sliding frame. A mating shaft 2 is fixed on the side wall of the sliding frame. Two guiding shafts slide vertically on the crossbeam frame. The lower ends of the two guiding shafts are fixed with an adjusting plate. A long hole is arranged on the side wall of the adjusting plate. The mating shaft 2 is slidably connected in the long hole. An adjusting screw rod is threadedly connected on the crossbeam frame. The lower end of the adjusting screw rod is rotatably connected to the upper end of the adjusting plate.

8. The pipe welding device according to claim 6 or 7, characterized in that, A displacement sensor is fixed at the bottom of the sliding plate.

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