Automatic welding equipment for hubbed welding neck flanges for pipe fittings

Abstract

The invention relates to the technical field of automatic welding of pipe fittings, and provides automatic welding equipment for hubbed butt welding flanges for pipe fittings, which comprises a workbench, and the workbench is provided with a roller assembly, two clamping assemblies, a flange feeding assembly, a pipe fitting feeding assembly, a receiving box and a welding assembly, the rolling wheel assembly is located between the two clamping assemblies, the flange feeding assembly and the pipe fitting feeding assembly are located on one side of the rolling wheel assembly and the clamping assemblies, and the material collecting box is located on the other side of the rolling wheel assembly and the clamping assemblies. The pipe fitting is moved through the roller assembly, the center of the pipe fitting is aligned with the center of the three-jaw chuck, alignment is not needed during welding, and therefore the adjusting time is saved, and the efficiency is improved; a plurality of pipe fittings and flanges are stored in a fixed-axis mode through the flange feeding assembly and the pipe fitting feeding assembly, convenience is provided for welding, the adjusting time is shortened, and the efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of automatic pipe welding technology, specifically to an automatic welding equipment for weld neck flanges for pipe fittings. Background Technology

[0002] Weld neck flanges are core components of pipeline connections and are widely used in heavy industries such as petroleum, chemical, power, and shipbuilding. Their structural feature is that the neck is connected to the pipeline by butt welding. They can withstand high pressure, high temperature and highly corrosive media, and have extremely high requirements for welding quality.

[0003] In the existing technology, most welding equipment is semi-automatic, requiring manual clamping of weld neck flanges and pipe fittings, resulting in low welding efficiency. After clamping, it is necessary to adjust the gap and alignment between the weld neck flange and the pipe fitting, which is time-consuming and labor-intensive, further reducing efficiency. For weld neck flanges of different sizes, readjustment is required, increasing workload and reducing efficiency. Furthermore, it is difficult to ensure the consistency of adjustment when welding multiple weld neck flanges simultaneously.

[0004] Therefore, the present invention provides an automatic welding equipment for necked butt-welding flanges for pipe fittings. Summary of the Invention

[0005] This invention provides an automatic welding equipment for necked butt-welding flanges for pipe fittings, which solves the problems existing in the prior art by improving automation and efficiency.

[0006] The technical solutions of the present invention are as follows:

[0007] An automatic welding device for butt-welding flanges for pipe fittings includes: a workbench, on which a roller assembly, a clamping assembly, a flange feeding assembly, a pipe fitting feeding assembly, a receiving box, and a welding assembly are arranged. Two clamping assemblies are provided, and the roller assembly is located between the two clamping assemblies. The flange feeding assembly and the pipe fitting feeding assembly are located on one side of the roller assembly and the clamping assembly, and the receiving box is located on the other side of the roller assembly and the clamping assembly.

[0008] The pipe feeding assembly includes a feeding box, which contains two baffles and two movable frames, and the movable frames are equipped with two stop bars.

[0009] The flange feeding assembly includes a feeding box II, and a plurality of threaded rods I are arranged in a circumferential array inside the feeding box II. The two ends of the threaded rods I have opposite threads with the center as the boundary, and each threaded rod is connected to a limiting rod.

[0010] The roller assembly includes a roller frame, on which a rotating disk is mounted, and multiple sets of racks, roller one, and roller two are arranged in a circular row on the rotating disk;

[0011] The clamping assembly includes a clamping base, on which multiple three-jaw chucks are arranged in a circular row.

[0012] The welding assembly includes a welding frame, which is installed at a clamping assembly near the flange feeding assembly, and a plurality of welding torches are mounted on the welding frame.

[0013] Preferably, the pipe feeding assembly includes two threaded rods and two sliding rods rotatably connected to the feeding box, and the two baffles are threadedly connected to the two threaded rods and slidably connected to the two sliding rods. The angle between the threaded rods and the sliding rods and the baffles is 45°. A bevel gear is fixed at one end of each of the two threaded rods, and the two bevel gears mesh with each other. A motor for driving the threaded rods to rotate is installed on the feeding box.

[0014] Preferably, a threaded rod three is rotatably connected to the first feeding box. One of the movable frames is slidably connected to the first feeding box and threadedly connected to the threaded rod three. The other movable frame is fixed inside the first feeding box. A motor two for driving the threaded rod three to rotate is installed on the first feeding box. A telescopic plate is installed on the movable frame. An installation head is installed on the telescopic plate. An electric push rod one is installed on the movable frame. The output end of the electric push rod one is connected to the installation head. A slider is slidably connected inside the installation head. Two stop rods are rotatably connected to the slider through a torsion spring. A spring is installed between the slider and the installation head. An electric push rod two is installed on the installation head. The output end of the electric push rod two is located between the two stop rods.

[0015] Preferably, a slide plate is slidably connected to the worktable, the slide plate is fixed to the movable frame, the roller frame is installed on the slide plate, the two clamping seats are slidably connected to the slide plate and the worktable respectively, and a cylinder is installed on the slide plate and the worktable. The output end of the cylinder is fixed to the clamping seat. An electric slide rail is installed on the worktable, and the second feeding box is installed on the electric slide rail.

[0016] Preferably, the threaded rod 1 is rotatably connected inside the feeding box 2, and a bevel gear 2 is fixed at one end where multiple threaded rods 1 intersect. A bevel gear 3 that meshes with multiple bevel gears 2 is installed inside the feeding box 2. A motor 3 that drives the bevel gear 3 to rotate is installed on the feeding box 2. A push plate is provided at one point of each of the multiple threaded rods. A moving plate is slidably connected inside the feeding box 2. The multiple push plates are fixed to the moving plate. A cylinder 2 is installed inside the feeding box 2. The output end of the cylinder 2 is fixed to the moving plate.

[0017] Preferably, a servo motor for driving the rotating disk is mounted on the roller frame. The rack is slidably connected to the rotating disk. Multiple gears are mounted on the rotating disk, and the multiple gears mesh with multiple racks. A gear ring is slidably connected to the rotating disk, and the gear ring meshes with multiple gears. A motor for driving one of the gears is mounted on the rotating disk. A mounting block is fixedly connected to one end of the rack. A roller is mounted on the mounting block. Connecting plates are provided on both sides of the mounting block. A clamping ring is rotatably connected to one end of the connecting plate. A roller is mounted on the clamping ring.

[0018] Preferably, the clamping rings on both sides of the mounting block are fixed together, the other end of the connecting plate is threadedly connected to a threaded rod four, and the threaded rod four is rotatably connected to a rack. One end of the threaded rod four is slidably connected to a connecting rod, and one end of the connecting rod is provided with a slot. A rotating rod one and two rotating rod two are rotatably connected to the roller frame. A bevel gear four is installed on the rotating rod one, and a bevel gear five is installed on the rotating rod two. The bevel gear four meshes with both bevel gears five. A motor five that drives the rotating rod one to rotate is installed on the roller frame, and a locking block is fixedly connected to one end of the rotating rod two.

[0019] Preferably, the clamping seat is equipped with a plurality of gears two, and the plurality of gears two are fixed to a plurality of three-jaw chucks. Two adjacent gears two mesh with each other, and the clamping seat is equipped with a motor six that drives one of the gears two to rotate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This invention moves pipe fittings using a roller assembly, aligning their center with the center of a three-jaw chuck. No alignment is required during welding, saving adjustment time and improving efficiency. Multiple pipe fittings and flanges are stored at their fixed axes using flange and pipe fitting feeding assemblies, facilitating welding, reducing adjustment time, and increasing efficiency. The coordinated operation of the roller assembly, clamping assembly, flange feeding assembly, pipe fitting feeding assembly, receiving box, and welding assembly achieves automated welding, eliminating the need for manual installation and adjustment, significantly improving efficiency. Furthermore, the roller and clamping assemblies enable simultaneous welding of multiple flanges, further enhancing efficiency while ensuring consistent adjustment.

[0022] 2. This invention stores flanges by inserting the bolt holes of the flange into the limiting rods. Furthermore, by rotating the threaded rod, the distance between the two limiting rods is made equal to the distance between the two symmetrical bolt holes of the flange, thus accommodating flanges of different sizes. During feeding, the flange feeding assembly is moved to the clamping assembly, where the flange is clamped by a three-jaw chuck. During welding, while rotating the three-jaw chuck, the welding gun in the welding assembly welds the butt joints of the flange and pipe fitting, enabling the welding of multiple sets of flanges and pipe fittings, accommodating different sizes, and achieving fully automated welding, thus improving welding efficiency. Moreover, the pipe fitting feeding assembly and flange feeding assembly feed the pipe fittings and flanges to two clamping assemblies with their axes aligned on the same straight line, eliminating the need for manual adjustment and completing alignment simultaneously with feeding, greatly improving efficiency. Attached Figure Description

[0023] Figure 1 This is a perspective view of the welding equipment of the present invention;

[0024] Figure 2 This is a perspective view of the pipe feeding assembly of the present invention;

[0025] Figure 3 This is the present invention. Figure 2 A magnified view of part A in the image;

[0026] Figure 4 This is a perspective view of the structure on the movable frame of the present invention;

[0027] Figure 5 This is a perspective view of the structure of the mounting head of the present invention;

[0028] Figure 6 This is a perspective view of the baffle of the present invention;

[0029] Figure 7 This is a perspective view of the flange feeding assembly of the present invention;

[0030] Figure 8 This is a perspective view of the internal structure of the flange feeding assembly of the present invention;

[0031] Figure 9 This is a perspective view of the roller assembly of the present invention;

[0032] Figure 10 This is the present invention. Figure 9 A stereoscopic view from another perspective;

[0033] Figure 11 This is the present invention. Figure 10 A magnified view of part B in the image.

[0034] In the picture:

[0035] 1. Workbench; 11. Slide plate; 12. Cylinder 1; 13. Electric slide rail; 2. Roller assembly; 21. Roller frame; 22. Rotary disk; 23. Rack; 24. Roller 1; 25. Roller 2; 26. Servo motor; 27. Gear 1; 28. Gear ring; 29. ​​Motor 4; 210. Mounting block; 211. Connecting plate; 212. Clamping ring; 213. Threaded rod 4; 214. Connecting rod; 215. Slot; 216. Rotating rod 1; 217. Rotating rod 2; 218. Bevel gear 4; 219. Bevel gear 5; 220. Motor 5; 221. Clamping block; 3. Clamping assembly; 31. Clamping seat; 32. Three-jaw chuck; 33. Gear 2; 34. Motor 6; 4. 41. Flange feeding assembly; 42. Feeding box II; 43. Threaded rod I; 44. Limiting rod; 45. Bevel gear II; 46. Bevel gear III; 47. Motor III; 48. Push plate; 49. Moving plate; 50. Cylinder II; 51. Pipe fitting feeding assembly; 52. Feeding box I; 53. Baffle; 54. Moving frame; 55. Stop bar; 56. Threaded rod II; 57. Slide bar; 58. Bevel gear I; 59. Motor I; 510. Threaded rod III; 511. Motor II; 512. Telescopic plate; 513. Electric push rod I; 514. Mounting head; 515. Slider; 516. Spring; 6. Receiving box; 71. Welding assembly; 72. Welding frame; 73. Welding torch. Detailed Implementation

[0036] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0037] Example:

[0038] like Figures 1-11 As shown in this embodiment, the present invention provides an automatic welding equipment for butt-welding flanges for pipe fittings, including: a workbench 1, on which a roller assembly 2, a clamping assembly 3, a flange feeding assembly 4, a pipe fitting feeding assembly 5, a receiving box 6, and a welding assembly 7 are arranged. There are two clamping assemblies 3, and the roller assembly 2 is located between the two clamping assemblies 3. The flange feeding assembly 4 and the pipe fitting feeding assembly 5 are located on one side of the roller assembly 2 and the clamping assembly 3, and the receiving box 6 is located on the other side of the roller assembly 2 and the clamping assembly 3.

[0039] The pipe feeding assembly 5 includes a feeding box 51, which contains two baffles 52 and two movable frames 53, and two stop bars 54 are installed on the movable frames 53.

[0040] The flange feeding assembly 4 includes a second feeding box 41. Multiple threaded rods 42 are arranged in a circumferential array inside the second feeding box 41. The two ends of the threaded rods 42 have opposite threads with the center as the boundary, and each is threadedly connected to a limiting rod 43.

[0041] Roller assembly 2 includes roller frame 21, on which a rotating disk 22 is mounted. Multiple sets of racks 23, roller one 24 and roller two 25 are arranged in a circular row on the rotating disk 22.

[0042] The clamping assembly 3 includes a clamping base 31, on which a plurality of three-jaw chucks 32 are arranged in a circular row;

[0043] The welding assembly 7 includes a welding frame 71, which is installed near the clamping assembly 3 close to the flange feeding assembly 4. Multiple welding torches 72 are mounted on the welding frame 71.

[0044] During welding, multiple pipe fittings are placed into the feeding box 51. Two baffles 52 limit the pipe fittings, with the distance between the baffles 52 equal to the pipe fitting diameter. Adjusting the distance between the baffles 52 allows for the storage of pipe fittings of different diameters. The moving frame 53 and the stop rods 54 clamp the pipe fittings, thus positioning pipe fittings of different lengths. During feeding, the pipe fittings are conveyed to the roller frame 21, where they are clamped by rollers 24 and 25 for initial fixation. The three-jaw chuck 32 of the clamping assembly 3 then clamps the pipe fittings. Simultaneously, inserting the flange bolt holes into the limiting rods 43 stores the flange. Rotating the threaded rod 42 moves the two limiting rods 43... The distance between 3 is the distance between two symmetrical bolt holes of the flange, thus accommodating flanges of different sizes. During feeding, the flange feeding assembly 4 is moved to the clamping assembly 3, and the flange is clamped by the three-jaw chuck 32. During welding, while rotating the three-jaw chuck 32, the welding gun in the welding assembly 7 is used to weld the butt joint of the flange and the pipe fitting, thus realizing the welding of multiple sets of flanges and pipe fittings, accommodating different sizes, and achieving fully automated welding, which improves welding efficiency. Furthermore, the pipe fitting feeding assembly 5 and the flange feeding assembly 4 feed the pipe fitting and flange to the two clamping assemblies 3 with their axes on the same straight line, eliminating the need for manual adjustment. Alignment can be completed at the same time as feeding, greatly improving efficiency.

[0045] like Figure 2-Figure 3 As shown, the pipe feeding assembly 5 includes two threaded rods 55 and two sliding rods 56 rotatably connected to the feeding box 51. Two baffles 52 are threadedly connected to the two threaded rods 55 and slidably connected to the two sliding rods 56. The angle between the threaded rods 55 and the sliding rods 56 and the baffles 52 is 45°. A bevel gear 57 is fixed at the intersection of the two threaded rods 55 and the two bevel gears 57 mesh with each other. A motor 58 for driving the threaded rods 55 to rotate is installed on the feeding box 51.

[0046] Before feeding, start motor 1 58 to drive threaded rod 2 55 to rotate. Since the two threaded rods 2 55 are driven by meshing bevel gear 1 57, the two threaded rods 2 55 rotate synchronously. Since the two baffles 52 are threadedly connected to the two threaded rods 2 55 and slidably connected to the two slide rods 56, the rotation of the threaded rods 2 55 drives the baffles 52 to move, thereby adapting to pipes of different diameters.

[0047] like Figure 6 As shown, the two baffles 52 are rotatably connected to the opposite sides by torsion springs.

[0048] During storage, the pipe fitting is placed from the top of the feeding box 51 between the two baffles 52, so that the pipe fitting passes over the buffer plate and slowly falls into the bottom of the two baffles 52; the buffer plate connected by the torsion spring applies resistance to the baffles 52, thereby smoothly placing the pipe fitting into the feeding box 51, completing the storage of multiple pipe fittings.

[0049] like Figures 4-5 As shown, a threaded rod 59 is rotatably connected to a feeding box 51. One movable frame 53 is slidably connected to the feeding box 51 and threadedly connected to the threaded rod 59. The other movable frame 53 is fixed inside the feeding box 51. A motor 510 is installed on the feeding box 51 to drive the threaded rod 59 to rotate. A telescopic plate 511 is installed on the movable frame 53. An installation head 513 is installed on the telescopic plate 511. An electric push rod 512 is installed on the movable frame 53. The output end of the electric push rod 512 is connected to the installation head 513. A slider 514 is slidably connected inside the installation head 513. Two stop rods 54 are rotatably connected to the slider 514 through a torsion spring. A spring 515 is installed between the slider 514 and the installation head 513. An electric push rod 516 is installed on the installation head 513. The output end of the electric push rod 516 is located between the two stop rods 54.

[0050] During material storage, place one end of the pipe fitting along the side of the first feeding box 51 closest to the second feeding box 41, so that multiple pipe fittings are neatly arranged between the two baffles 52. Then start the second motor 510 to drive the threaded rod 3 59 to rotate. Because a movable frame 53 is threadedly connected to the threaded rod 3 59 and slidably connected inside the first feeding box 51, the rotation of the threaded rod 3 59 drives the movable frame 53 to move towards the movable frame 53 closest to the second feeding box 41, so that the two mounting heads 513 are located at the two ends of the lowest pipe fitting. Then start the motor... The second electric push rod 516 pushes the stop rod 54 and the slider 514 to move synchronously towards the center of the pipe. After the slider 514 moves to the limit distance, the second electric push rod 516 continues to push, thereby pushing the two stop rods 54 to rotate, so that the two stop rods 54 fit against the inner wall of the pipe, thereby fixing the pipe. When feeding, the first electric push rod 512 is started, pushing the two mounting heads 513 and the pipe between the two mounting heads 513 to move along the telescopic plate 511 towards the roller assembly 2. During this period, the telescopic plate 511 extends the moving distance.

[0051] It should be noted that the elasticity of the spring 515 between the slider 514 and the mounting head 513 is less than the elasticity of the torsion spring on the stop rod 54. When the electric push rod 516 pushes the stop rod 54, it first pushes the stop rod 54 and the slider 514 to move synchronously, and then pushes the two stop rods 54 to rotate.

[0052] It should be noted that the angle between the threaded rod 55 and the slide rod 56 and the baffle 52 is 45°. The rotation of the threaded rod 55 will cause the two baffles 52 to expand or contract outward or inward, so that even if the position of the mounting head 513 remains unchanged, the center of the pipe fittings of different sizes will always be located at the mounting head 513. This makes it convenient for the mounting head 513 and the baffle 54 to fix the pipe fittings. Furthermore, when the mounting head 513 is moved in the future, the center of the pipe fittings and the center of the roller 24 will always be on the same straight line, thus making the clamping of the roller 24 and the roller 25 more precise.

[0053] like Figure 1 As shown, a slide plate 11 is slidably connected to the workbench 1. The slide plate 11 is fixed to the moving frame 53. The roller frame 21 is installed on the slide plate 11. Two clamping seats 31 are slidably connected to the slide plate 11 and the workbench 1 respectively. A cylinder 12 is installed on the slide plate 11 and the workbench 1. The output end of the cylinder 12 is fixed to the clamping seat 31. An electric slide rail 13 is installed on the workbench 1. A second feeding box 41 is installed on the electric slide rail 13.

[0054] The movable frame 53 is fixed to the slide plate 11. When the movable frame 53 moves, it drives the clamping seat 31 and the roller frame 21 on the slide plate 11 to move synchronously, so that the roller frame 21 and the clamping seat 31 can support and clamp the pipe fittings.

[0055] like Figure 7-Figure 8As shown, threaded rod 42 is rotatably connected to feed box 41, and bevel gear 44 is fixed at one end where multiple threaded rods 42 intersect. Bevel gear 45 meshes with multiple bevel gears 44 inside feed box 41. Motor 46 that drives bevel gear 45 to rotate is installed on feed box 41. Push plate 47 is provided at each of the multiple threaded rods 42. Moving plate 48 is slidably connected inside feed box 41. Multiple push plates 47 are fixed to moving plate 48. Cylinder 49 is installed inside feed box 41. The output end of cylinder 49 is fixed to moving plate 48.

[0056] When storing the flange, start motor 3 46 to drive bevel gear 3 45 to rotate, which in turn drives multiple bevel gears 2 44 meshing with bevel gear 3 45 to rotate, which in turn drives threaded rod 1 42 to rotate, thereby synchronously adjusting the distance between the limit rods 43 at both ends of threaded rod 1 42 to be the distance between two symmetrical bolt holes on the flange, and ensuring that the center position of the two limit rods 43 remains unchanged, thus ensuring that the center position of the flange remains unchanged, which is convenient for subsequent clamping. When feeding, start electric slide rail 13 to move feeding box 2 41 to clamping seat 31, and make multiple sets of limit rods 43 correspond to multiple three-jaw chucks 32. Then start cylinder 1 12 to push clamping seat 31 closer to limit rods 43, so that it is located at the center of three-jaw chuck 32. Then start cylinder 2 49 in feeding box 2 41 to push moving plate 48 to move push plate 47 towards three-jaw chuck 32, so that push plate 47 pushes flange to the center of three-jaw chuck 32, and three-jaw chuck 32 clamps flange.

[0057] like Figure 9 As shown, a servo motor 26 that drives the rotating disk 22 to rotate is mounted on the roller frame 21. A rack 23 is slidably connected to the rotating disk 22. Multiple gears 27 are mounted on the rotating disk 22, and the multiple gears 27 mesh with multiple racks 23. A gear ring 28 is slidably connected to the rotating disk 22, and the gear ring 28 meshes with multiple gears 27. A motor 29 that drives one of the gears 27 to rotate is mounted on the rotating disk 22. A mounting block 210 is fixedly connected to one end of the rack 23. A roller 24 is mounted on the mounting block 210. Connecting plates 211 are provided on both sides of the mounting block 210. A clamping ring 212 is rotatably connected to one end of the connecting plate 211. A roller 25 is mounted on the clamping ring 212, and the center of the clamping ring 212 is fixed.

[0058] like Figure 10 , Figure 11As shown, the clamping rings 212 on both sides of the mounting block 210 are fixed together. The other end of the connecting plate 211 is threadedly connected to a threaded rod 213, and the threaded rod 213 is rotatably connected to the rack 23. One end of the threaded rod 213 is slidably connected to a connecting rod 214. One end of the connecting rod 214 is provided with a slot 215. The roller frame 21 is rotatably connected to a rotating rod 216 and two rotating rods 217. A bevel gear 218 is installed on the rotating rod 216, and a bevel gear 219 is installed on the rotating rod 217. The bevel gear 218 meshes with both bevel gears 219. The roller frame 21 is equipped with a motor 220 that drives the rotating rod 216 to rotate. One end of the rotating rod 217 is fixedly connected to a locking block 221.

[0059] Before feeding, motor 29 is started, driving gear 27 to rotate. This, in turn, drives multiple racks 23 to move synchronously via gear ring 28, causing mounting block 210 to move outward or inward toward rotating disk 22. This ensures that the axis of the pipe fitting between roller 24 and roller 25 is aligned with the axis of the three-jaw chuck 32, thus ensuring precise clamping by the three-jaw chuck 32. During feeding, the pipe fitting is conveyed to the surface of two rollers 24 via pipe feeding assembly 5. At this time, motor 220 is started, driving rotating rod 216 and bevel gear 218 to rotate, which in turn drives bevel gear 218 to rotate with meshing bevel gear 219. This causes the locking block 221 on the rotating rod 217 to drive the connecting rod 214 to rotate through the locking groove 215, which in turn drives the threaded rod 213 to rotate. Because the connecting plate 211 is threadedly connected to the threaded rod 213, the connecting plate 211 is restricted from rotating by the clamping ring 212. Therefore, the rotation of the threaded rod 213 will drive the connecting plate 211 to move, thereby causing the clamping ring 212 to rotate. This causes the roller 25 on the clamping ring 212 to cooperate with the roller 1 24 to clamp the pipe. After clamping one, the servo motor 26 is started to drive the rotating disk 22 to rotate clockwise, so that the next clamping ring 212 clamps the pipe.

[0060] like Figure 1 As shown, multiple gears 33 are mounted on the clamping base 31, and the multiple gears 33 are fixed to multiple three-jaw chucks 32. Two adjacent gears 33 mesh with each other, and a motor 34 that drives one of the gears 33 to rotate is mounted on the clamping base 31.

[0061] After the pipe fittings and flanges are fed, cylinder 12 is started to push the clamping seat 31 closer to one end of the pipe fitting, so that it is located in the center of the three-jaw chuck 32, and the three-jaw chuck 32 is started to clamp one end of the pipe fitting. Then, another cylinder 12 is started to push the clamping seat 31 holding the flange to move to the other end of the pipe fitting, so that they cooperate with each other to form a gap. When welding, motor 6 34 is started to drive multiple gears 2 33 to rotate synchronously, so that the three-jaw chuck 32 drives the pipe fittings and flanges to rotate synchronously, and welding is carried out by the welding torch 72 while rotating, thereby realizing the synchronous welding of multiple flanges.

[0062] It should be noted that rollers 24 and 25 not only provide support for the pipe fittings, but also allow the pipe fittings to rotate freely during welding, ensuring their stability and thus improving the welding effect.

[0063] After welding is completed, the three-jaw chuck 32 releases the clamp on the pipe fitting and flange, and the clamping seat 31 is reset. Then, the servo motor 26 is started to drive the connecting rod 214 to move to the rotating rod 217 between two adjacent connecting rods 214, so that the slot on the connecting rod 214 engages with the locking block 221 on the rotating rod 217. The motor 5 220 is started to drive the rotating rod 217 to rotate, so that the clamping ring 212 is reset, and the flange pipe fitting, which has lost its limit, falls into the receiving box 6.

[0064] The roller assembly 2 moves the pipe fittings, aligning their centers with the three-jaw chuck 32, eliminating the need for alignment during welding and saving adjustment time, thus improving efficiency. The flange feeding assembly 4 and pipe fitting feeding assembly 5 store the fixed axes of multiple pipe fittings and flanges, facilitating welding, reducing adjustment time, and increasing efficiency. The coordinated operation of the roller assembly 2, clamping assembly 3, flange feeding assembly 4, pipe fitting feeding assembly 5, receiving box 6, and welding assembly 7 achieves automated welding, eliminating the need for manual installation and adjustment, significantly improving efficiency. Furthermore, the roller assembly 2 and clamping assembly 3 enable simultaneous welding of multiple flanges, further enhancing efficiency while ensuring consistent adjustment.

[0065] The embodiments of the present invention are given for the purposes of illustration and description. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An automatic welding equipment for necked butt-welding flanges for pipe fittings, comprising: A workbench (1) is characterized in that: the workbench (1) is provided with a roller assembly (2), a clamping assembly (3), a flange feeding assembly (4), a pipe fitting feeding assembly (5), a receiving box (6), and a welding assembly (7). There are two clamping assemblies (3), and the roller assembly (2) is located between the two clamping assemblies (3). The flange feeding assembly (4) and the pipe fitting feeding assembly (5) are located on one side of the roller assembly (2) and the clamping assembly (3), and the receiving box (6) is located on the other side of the roller assembly (2) and the clamping assembly (3). The pipe feeding assembly (5) includes a feeding box (51), which is provided with two baffles (52) and two movable frames (53). Two baffles (54) are installed on the movable frames (53). The flange feeding assembly (4) includes a second feeding box (41). The second feeding box (41) has a plurality of threaded rods (42) arranged in a circumferential array. The two ends of the threaded rods (42) have opposite threads with the center as the boundary, and each is threadedly connected to a limiting rod (43). The roller assembly (2) includes a roller frame (21), on which a rotating disk (22) is mounted. The rotating disk (22) is provided with multiple sets of racks (23), roller one (24) and roller two (25) arranged in a circumferential array. The clamping assembly (3) includes a clamping base (31), on which a plurality of three-jaw chucks (32) are arranged in a circular row; The welding assembly (7) includes a welding frame (71) which is mounted on a clamping assembly (3) near the flange feeding assembly (4) and a plurality of welding torches (72) are mounted on the welding frame (71).

2. The automatic welding equipment for necked butt-welding flanges for pipe fittings as described in claim 1, characterized in that: The pipe feeding assembly (5) includes two threaded rods (55) and two sliding rods (56) rotatably connected to the feeding box (51). The two baffles (52) are threadedly connected to the two threaded rods (55) and slidably connected to the two sliding rods (56). The angle between the threaded rods (55) and the sliding rods (56) and the baffles (52) is 45°. A bevel gear (57) is fixed at the intersection of the two threaded rods (55) and the two bevel gears (57) mesh with each other. A motor (58) for driving the threaded rods (55) to rotate is installed on the feeding box (51).

3. The automatic welding equipment for necked butt-welding flanges for pipe fittings as described in claim 1, characterized in that: A threaded rod three (59) is rotatably connected to the first feeding box (51). One of the movable frames (53) is slidably connected to the first feeding box (51) and threadedly connected to the threaded rod three (59). The other movable frame (53) is fixed inside the first feeding box (51). A motor two (510) for driving the threaded rod three (59) to rotate is installed on the first feeding box (51). A telescopic plate (511) is installed on the movable frame (53). An installation head (513) is installed on the telescopic plate (511). 3) An electric push rod (512) is installed on the mounting head (513). The output end of the electric push rod (512) is connected to the mounting head (513). A slider (514) is slidably connected inside the mounting head (513). Two stops (54) are rotatably connected to the slider (514) by torsion springs. A spring (515) is installed between the slider (514) and the mounting head (513). An electric push rod (516) is installed on the mounting head (513). The output end of the electric push rod (516) is located between the two stops (54).

4. The automatic welding equipment for necked butt-welding flanges for pipe fittings as described in claim 3, characterized in that: A slide plate (11) is slidably connected to the workbench (1). The slide plate (11) is fixed to the moving frame (53). The roller frame (21) is installed on the slide plate (11). The two clamping seats (31) are slidably connected to the slide plate (11) and the workbench (1) respectively. A cylinder (12) is installed on the slide plate (11) and the workbench (1). The output end of the cylinder (12) is fixed to the clamping seat (31). An electric slide rail (13) is installed on the workbench (1). The second feeding box (41) is installed on the electric slide rail (13).

5. The automatic welding equipment for necked butt-welding flanges for pipe fittings as described in claim 1, characterized in that: The threaded rod 1 (42) is rotatably connected to the feeding box 2 (41), and a bevel gear 2 (44) is fixed at one end where multiple threaded rods 1 (42) intersect. A bevel gear 3 (45) is installed in the feeding box 2 (41) and meshes with multiple bevel gears 2 (44). A motor 3 (46) is installed on the feeding box 2 (41) to drive the bevel gear 3 (45) to rotate. A push plate (47) is provided at each of the multiple threaded rods 1 (42). A moving plate (48) is slidably connected in the feeding box 2 (41). Multiple push plates (47) are fixed to the moving plate (48). A cylinder 2 (49) is installed in the feeding box 2 (41), and the output end of the cylinder 2 (49) is fixed to the moving plate (48).

6. The automatic welding equipment for necked butt-welding flanges for pipe fittings as described in claim 1, characterized in that: A servo motor (26) for driving the rotating disk (22) to rotate is installed on the roller frame (21). The rack (23) is slidably connected to the rotating disk (22). Multiple gears (27) are installed on the rotating disk (22), and the multiple gears (27) mesh with the multiple racks (23). A gear ring (28) is slidably connected to the rotating disk (22), and the gear ring (28) meshes with the multiple gears (27). A motor (29) for driving one of the gears (27) to rotate is installed on the rotating disk (22). A mounting block (210) is fixedly connected to one end of the rack (23). The roller (24) is installed on the mounting block (210). A connecting plate (211) is provided on both sides of the mounting block (210). A clamping ring (212) is rotatably connected to one end of the connecting plate (211). The roller (25) is installed on the clamping ring (212).

7. The automatic welding equipment for necked butt-welding flanges for pipe fittings as described in claim 6, characterized in that: The clamping rings (212) on both sides of the mounting block (210) are fixed together. The other end of the connecting plate (211) is threadedly connected to a threaded rod four (213), and the threaded rod four (213) is rotatably connected to the rack (23). One end of the threaded rod four (213) is slidably connected to a connecting rod (214), and one end of the connecting rod (214) is provided with a slot (215). A rotating rod one (216) is rotatably connected to the roller frame (21). The roller frame (21) has two rotating rods (216) and two rotating rods (217). The rotating rod (216) is equipped with a bevel gear (218) and the rotating rod (217) is equipped with a bevel gear (219). The bevel gear (218) meshes with the two bevel gears (219). The roller frame (21) is equipped with a motor (220) that drives the rotating rod (216) to rotate. One end of the rotating rod (217) is fixedly connected to a locking block (221).

8. The automatic welding equipment for necked butt-welding flanges for pipe fittings as described in claim 1, characterized in that: The clamping seat (31) is equipped with a plurality of gears (33), and the plurality of gears (33) are fixed to a plurality of three-jaw chucks (32). Two adjacent gears (33) mesh with each other, and the clamping seat (31) is equipped with a motor (34) that drives one of the gears (33) to rotate.

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