Welding device for steel pipe production

Abstract

The invention provides a welding device for steel pipe production, and belongs to the technical field of steel pipe machining. The device comprises a workbench, a first arc-shaped guide rod is arranged at one end of the workbench, a guide ring is slidably arranged on the outer surface of the first arc-shaped guide rod, a first supporting plate is fixedly arranged at the upper end of the guide ring, a rotating motor is fixedly arranged at the lower end of the first supporting plate, and a fourth gear is fixedly arranged on an output shaft of the rotating motor; a disc is fixedly arranged on one side of the workbench, and second teeth are arranged on the circumferential side face of the disc. The first arc-shaped guide rod, the second arc-shaped guide rod and the disc form a track reference, the first supporting plate moves along the arc-shaped track, and multi-angle welding of the steel pipe is achieved; the machining assembly enables a welding ring to be perpendicular to the welding end face all the time through a reciprocating driving assembly, sliding of an arc-shaped plate and fine adjustment in the Y / Z direction, a compression spring on a mounting ring pushes a grinding block to be tightly attached to the side wall of the steel pipe, circumferential uniform grinding is completed, surrounding welding is synchronously achieved through a welding gun, and machining precision is guaranteed.

Description

Technical Field

[0001] This application relates to the field of steel pipe processing technology, and in particular to a welding apparatus for steel pipe production. Background Technology

[0002] In the field of steel pipe processing technology, the core prerequisite for steel pipe welding is to achieve precise butt jointing of two steel pipes to be welded, and the butt joint accuracy is directly related to the weld quality. If there is a deviation in the butt joint, it can easily lead to problems such as insufficient weld strength and poor sealing.

[0003] For welding two straight steel pipes, existing technologies can achieve stable welding on the circumferential surface by driving the steel pipe to rotate or by moving the welding head around the circumference of the steel pipe. However, when faced with scenarios requiring adjustment of the welding angle (such as non-right-angle butt joints) or irregular butt joints between straight and bent pipes, the angle adjustment mechanism of traditional welding equipment is significantly less flexible and cannot adapt to the curved surface structure of the bent pipe, making automated welding difficult to implement and ultimately relying on manual welding. Manual welding is not only inefficient but also easily affected by factors such as the operator's skill level and working conditions, resulting in poor welding quality stability and making it difficult to meet the requirements of standardized production.

[0004] Therefore, this paper proposes a welding device for steel pipe production, which aims to solve the problems of low efficiency and poor quality caused by the inflexible adjustment of welding angle and reliance on manual labor in traditional equipment. In this way, it can realize the automated operation of welding steel pipes at different angles (straight pipe to straight pipe, straight pipe to bent pipe) and improve the welding accuracy. Summary of the Invention

[0005] This application provides a welding device for steel pipe production to solve the problems of low efficiency and poor quality caused by the inflexible adjustment of welding angle and reliance on manual labor in traditional equipment.

[0006] In a first aspect, embodiments of this application provide a welding device for steel pipe production, including a workbench, a first support plate fixedly disposed on the upper end of the workbench, and a rotating clamping unit disposed on one end of the workbench, the rotating clamping unit being used to adjust the welding angle of the steel pipe; The rotating clamping unit includes a first arc-shaped guide rod fixedly disposed on one side of the workbench, a guide ring slidably sleeved on the outer surface of the first arc-shaped guide rod, a first support plate fixedly disposed on the upper end of the guide ring, a second support plate fixedly disposed on the upper end of the first support plate, and a rotating unit disposed on the lower end of the first support plate. The rotating unit includes a rotating motor fixedly installed at the lower end of the first support plate. A fourth gear is fixedly installed on the output shaft of the rotating motor. A disc is fixedly installed on one side of the worktable. A second tooth that meshes with the fourth gear is provided on the circumferential side of the disc. An arc-shaped plate is slidably engaged at the upper end of the worktable. A sliding block is slidably disposed at the upper end of the arc-shaped plate through a structure identical to that of the rotating unit. A processing component that can slide along the Y and Z directions is disposed at the upper end of the sliding block. The processing component is used to perform grinding and welding of steel pipes.

[0007] In one exemplary embodiment of this application, the rotating clamping unit further includes a second arc-shaped guide rod fixedly disposed on one side of the worktable, a second support plate being slidably sleeved on the outer surface of the second arc-shaped guide rod, and a second clamping ring being fixedly disposed on the upper end of the second support plate.

[0008] In one exemplary embodiment of this application, a connecting rod is fixedly provided between the first support plate and the second support plate, and a ball is rotatably provided at the lower end of the connecting rod, the ball being engaged in a guide groove at the upper end of the disc.

[0009] In one exemplary embodiment of this application, the processing assembly includes a welding ring disposed above a sliding block, an mounting ring rotatably disposed inside the welding ring, a plurality of mounting plates disposed on one side of the mounting ring, a processing hydraulic telescopic rod fixedly disposed on one side of each of the plurality of mounting plates, and a grinding unit and a welding gun respectively connected to the lower ends of the plurality of processing hydraulic telescopic rods; The mounting ring has a third tooth on its inner circumferential wall, and a fifth gear is engaged on the lower side of the third tooth. The welding ring is equipped with a motor that drives the fifth gear to rotate.

[0010] In one exemplary embodiment of this application, the grinding unit includes a fixing block fixedly disposed at the lower end of the processing hydraulic telescopic rod, and the fixing block is provided with a plurality of grinding components inside; Each polishing assembly includes two compression springs fixedly installed inside the fixed block. The lower ends of the two compression springs are each provided with the same polishing block, and a polishing channel is formed between the upper and lower opposing polishing blocks.

[0011] In one exemplary embodiment of this application, a clamping assembly is slidably disposed on the upper end of the workbench, the clamping assembly including a fixing ring and a support frame slidably disposed on the upper end of the workbench; A clamping hydraulic telescopic rod is slidably provided on one side of the support frame. A first clamping ring is fixedly provided on the output shaft of the clamping hydraulic telescopic rod. A circular ring is rotatably provided on one side of the first clamping ring. A first tooth is provided on the inner circumferential wall of the circular ring. A clamping servo motor is provided inside the first clamping ring. A first gear that meshes with the first tooth is fixedly provided on the output shaft of the clamping servo motor. The first clamping ring has a plurality of rotating rods arranged in a ring array on one side. The outer surfaces of the plurality of rotating rods are fixedly provided with second gears that mesh with the first teeth. The ends of the plurality of rotating rods are all fixedly provided with third gears on the same axis. The first clamping ring has a plurality of L-shaped plates arranged in a ring array on one side. The L-shaped plates are slidably engaged with toothed plates that mesh with the third gears on one side.

[0012] In one exemplary embodiment of this application, an arc-shaped clamp is fixedly provided at the upper end of each of the plurality of toothed plates.

[0013] In one exemplary embodiment of this application, the fixing block has wedge-shaped openings at both ends, and the grinding blocks have inclined surfaces on the side near the wedge-shaped openings.

[0014] In one exemplary embodiment of this application, a support base is provided at the upper end of the workbench; The support base includes a support base fixedly mounted on the upper end of the workbench. The upper end of the support base has an arc-shaped groove, and multiple support rollers are rotatably arranged inside the arc-shaped groove.

[0015] In one exemplary embodiment of this application, the bottom arc-shaped support surfaces of the first tray, the second tray, and the first clamping ring are on the same horizontal plane.

[0016] The beneficial effects of the welding apparatus for steel pipe production provided in this application embodiment are as follows: (1) The present invention can drive the steel pipe to rotate precisely around the fixed center by rotating the arc-shaped guide rod, the disc and the gear transmission structure arranged coaxially in the clamping unit. At the same time, the processing components can slide along the arc trajectory at the upper end of the arc plate and adjust the position in combination with the Y and Z directions, so that the welding ring is always perpendicular to the welding end face. This effectively solves the problem of insufficient flexibility of traditional devices when welding straight pipes and bending pipes and adjusting the angle, realizes the automatic adaptation of welding at different angles, and increases the convenience of use. (2) The clamping assembly of the present invention uses a servo motor to drive the gear and the toothed plate to control multiple arc-shaped clamping plates to expand and clamp the inner wall of the steel pipe synchronously, so as to adapt to the clamping and fixing of steel pipes of different sizes. With the positioning and guidance of the fixing ring, guide rod and the first support plate, it can effectively prevent the steel pipe from deviating and tilting, and lay a stable and reliable clamping foundation for welding operations. The rubber support roller of the support seat can convert the sliding friction of the steel pipe when it moves into rolling friction, significantly reducing the moving resistance, making it easier for operators or equipment to rotate the steel pipe and achieve precise positioning. (3) The processing component of the present invention integrates a welding gun and a grinding unit. The rotating mounting ring can simultaneously complete the uniform grinding and welding of the circumference of the steel pipe. The compression spring keeps the grinding block in close contact with the steel pipe to ensure the grinding quality. Moreover, each moving part is automatically controlled by a motor, lead screw, etc., which replaces manual welding, greatly improves welding efficiency, and reduces quality fluctuations caused by manual operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the welding apparatus provided in the embodiments of this application; Figure 2 This is a schematic diagram of the reciprocating drive assembly and clamping assembly of the welding apparatus provided in the embodiments of this application; Figure 3 This is a partial structural schematic diagram of the welding device clamping assembly provided in an embodiment of this application; Figure 4 This is a partial structural schematic diagram of the welding device clamping assembly provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the welding device clamping assembly support base provided in the embodiments of this application; Figure 6 This is a schematic diagram of the overall structure of the rotating clamping unit of the welding device provided in the embodiments of this application; Figure 7 The welding apparatus provided in the embodiments of this application Figure 6 Enlarged structural diagram at point A; Figure 8 This is a schematic diagram of the overall structure of the welding apparatus processing assembly provided in the embodiments of this application; Figure 9 This is a partial structural schematic diagram of the welding apparatus processing component provided in an embodiment of this application; Figure 10 This is a schematic diagram of the structure of the grinding unit of the welding apparatus provided in the embodiments of this application. Detailed Implementation

[0019] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this solution will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this solution, not all of them. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this solution.

[0020] The term "comprising" and any other variations thereof in the specification, claims, and accompanying drawings of this invention mean "including but not limited to," and are intended to cover a non-exclusive inclusion, not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish different objects, not to describe a specific order.

[0021] The implementation of this application will be described in detail below with reference to the specific accompanying drawings: In the field of steel pipe processing technology, during steel pipe welding, two steel pipes need to be joined together. The precision of the joining process significantly affects the welding quality. For welding two straight steel pipes, circumferential welding can be achieved by rotating the pipes or the welding head. However, when adjusting the welding angle or welding straight pipes to bends, traditional welding devices lack the flexibility to adapt to curved surfaces, making automated welding difficult and necessitating manual welding. Manual welding is inefficient and results in inconsistent weld quality. Therefore, this paper proposes a welding device for steel pipe production, aiming to solve the problems of inflexible angle adjustment and reliance on manual labor, leading to low efficiency and poor quality, and to achieve automated and high-precision control of welding at different angles.

[0022] Example 1: Figure 1 This is a schematic diagram of a welding apparatus for steel pipe production provided in an embodiment of this application. Please refer to [link / reference]. Figure 1 , Figure 2 As shown, the welding device for steel pipe production includes a workbench 1. A reciprocating drive assembly 2 is provided at the upper end of the workbench 1. A sliding groove is provided at the upper end of the workbench 1 along its long side. The reciprocating drive assembly 2 includes a drive motor 21 fixedly installed on the short side of the outer side of the workbench 1. The output shaft of the drive motor 21 passes through the side wall of the workbench 1. A lead screw 22 is provided in the sliding groove. The end of the lead screw 22 away from the drive motor 21 is rotatably connected to the side wall of the sliding groove. A slider 23 is threadedly connected to the outer surface of the lead screw 22. A sliding plate 24 is fixedly installed at the upper end of the slider 23. Guide rods are symmetrically provided at the bottom end of the sliding plate 24. Guide grooves are symmetrically opened on both sides of the sliding groove at the upper end of the workbench 1. The guide rods are slidably installed in the guide grooves. In this embodiment, the drive motor 21 drives the slider 23, which is threadedly connected to the lead screw 22, to slide back and forth in the sliding groove. The guide rod and guide groove are used to position and guide the sliding plate 24, so that the sliding plate 24 slides along the long side of the worktable 1 under the action of the slider 23, and always maintains a stable motion trajectory. This avoids the sliding plate 24 from shifting, tilting or rotating due to the thread clearance of the lead screw 22 or uneven force, thereby improving the welding accuracy.

[0023] For details, please refer to Figure 2 , Figure 3 , Figure 4 As shown, a clamping assembly 3 is provided on the sliding plate 24. The clamping assembly 3 includes a fixing ring 31 fixedly mounted on the upper end of the sliding plate 24. The fixing ring 31 is used to fit the steel pipe for subsequent welding operations. A support frame 32 is fixedly mounted on one side of the sliding plate 24. A clamping hydraulic telescopic rod 33 is slidably mounted on one side of the support frame 32 via a reciprocating drive assembly 2. A first clamping ring 34 is fixedly mounted on the output shaft of the clamping hydraulic telescopic rod 33. A circular ring 35 is rotatably mounted on one side of the first clamping ring 34. A first tooth 36 is provided on the inner circumferential wall of the circular ring 35. A clamping servo motor 37 is provided inside the first clamping ring 34. A first gear 38 is fixedly mounted on the output shaft of the clamping servo motor 37. The first gear 38 meshes with the first tooth 36. One side of the first clamping ring 34 is on the inner ring of the circular ring 35. The central ring array is rotatably equipped with multiple rotating rods 39. The outer surfaces of the multiple rotating rods 39 are all fixedly equipped with second gears 310, which mesh with first teeth 36. The ends of the multiple rotating rods 39 are all coaxially fixedly equipped with third gears 311. On one side of the first clamping ring 34, L-shaped plates 312 are fixedly arranged in a ring array in the inner ring of the ring 35. The sides of the multiple L-shaped plates 312 near the third gears 311 are all provided with sliding grooves. Tooth plates 313 are slidably engaged in the sliding grooves and mesh with the third gears 311. The upper ends of the multiple tooth plates 313 are all fixedly equipped with arc-shaped clamping plates 314. The two ends of the first clamping ring 34 are symmetrically fixedly equipped with guide rods. The guide rods are slidably arranged in the sliding grooves on both sides of the support frame 32 for motion guidance and to improve the overall stability of the structure. In this embodiment, the steel pipe is fitted into the fixing ring 31 at the upper end of the sliding plate 24 for initial positioning. Subsequently, the reciprocating drive assembly 2 drives the clamping hydraulic telescopic rod 33 on one side of the support frame 32 to move up and down, so that the center of the first clamping ring 34 is at the same height as the center of the steel pipe. After the height adjustment, the first clamping ring 34 is inserted into the steel pipe by clamping the hydraulic telescopic rod 33. The clamping servo motor 37 is started, and the first gear 38 on its output shaft meshes with the first tooth 36 on the inner side of the ring 35, driving the ring 35 to rotate on the first clamping ring 34. When the ring 35 rotates, the first tooth 36 drives the multiple second gears 310 in the ring array to rotate synchronously, thereby causing the rotating rod 39 fixed to the second gear 310 to rotate. The third gear 311 at the end of the rotating rod 39 rotates accordingly and meshes with the toothed plate 313 in the groove of the L-shaped plate 312, pushing the toothed plate 313 to slide along the groove. Finally, the arc-shaped clamping plates 314 on the upper end of the multiple toothed plates 313 expand outward simultaneously, clamping the inner wall of the steel pipe and providing stable clamping for subsequent welding operations.

[0024] For details, please refer to Figure 1 As shown, the upper end of the workbench 1 is fixedly provided with a first support plate 4 by multiple guide columns. The upper end surface of the first support plate 4 is an arc-shaped surface, which is adapted to the lower end surface of the fixing ring 31 to ensure that the bottom of the steel pipe is on the same horizontal line.

[0025] For details, please refer to Figure 5 As shown, a support base 5 is provided on one side of the first pallet 4 at the upper end of the workbench 1. The support base 5 includes a support base 51 fixedly installed at the upper end of the workbench 1. The upper end surface of the support base 51 is an arc-shaped surface and is adapted to the fixing ring 31. An arc-shaped groove is opened at the upper end of the support base 51. Multiple support rollers 52 are arranged in a ring around the short side of the workbench 1 inside the arc-shaped groove. In this embodiment, the support roller 52 is a rubber roller. When it is necessary to fine-tune the rolling of the steel pipe along the short side of the workbench 1, the support roller 52 can rotate in a ring along the arc groove. By replacing sliding friction with rolling friction, the resistance when the steel pipe moves is reduced, making it easier for operators or equipment to rotate the steel pipe for precise positioning.

[0026] Example 2: Based on Example 1, please refer to... Figure 6 , Figure 7As shown, a rotating clamping unit 6 is provided at one end of the workbench 1. The rotating clamping unit 6 is used to realize the butt welding of steel pipes at different angles. The rotating clamping unit 6 includes a first arc-shaped guide rod 61 fixedly installed on one side of the workbench 1. A guide ring 62 is slidably sleeved on the outer surface of the first arc-shaped guide rod 61. A first support plate 63 is fixedly installed at the upper end of the guide ring 62. A disc 64 is fixedly installed on one side of the workbench 1. A rotating unit 65 is provided at the lower end of the first support plate 63. The rotating unit 65 includes a rotating motor 651 fixedly installed at the lower end of the first support plate 63. A fourth gear 652 is fixedly installed on the output shaft of the rotating motor 651. A second tooth 653 is provided on the circumferential side of the disc 64. The fourth gear 652 meshes with the second tooth 653. The first arc-shaped guide rod 61 and the disc 64 are arranged with the same center (coaxial) and have different radii. A second support plate 66 is fixedly installed at the upper end of the first support plate 63 through multiple guide columns. A second arc-shaped guide rod 67 is fixedly installed at one end of the workbench 1. There are two sets of the second arc-shaped guide rods 67, which are arranged around the same center (coaxial) and have different radii. A second support plate 68 is slidably sleeved on the outer surface of the second arc-shaped guide rod 67. A second clamping ring 69 is fixedly installed at the upper end of the second support plate 68 through multiple guide posts. A locking bolt is installed at the upper end of the second clamping ring 69. A connecting rod 610 is fixedly provided between the first support plate 63 and the second support plate 68. An arc-shaped guide groove is provided at the upper end of the disc 64. A ball 611 is rotatably provided at the lower end of the connecting rod 610. The ball 611 is engaged in the guide groove at the upper end of the disc 64. In this embodiment, the first arc-shaped guide rod 61, the disk 64, and the second arc-shaped guide rod 67 are all arranged around the same center and each has a different radius. The first support plate 63 is fitted onto the first arc-shaped guide rod 61 via a guide ring 62. The rotating motor 651 mounted on the first support plate 63 drives the fourth gear 652 to rotate. Because the fourth gear 652 meshes with the second tooth 653 on the side of the disk 64, the disk 64 remains stationary. The reaction force pushes the first support plate 63 to move along the coaxial arc-shaped trajectory of the first arc-shaped guide rod 61. At the same time, the first arc-shaped guide rod 67... A support plate 63 is connected to a second support plate 68 via a connecting rod 610. The ball 611 at the lower end of the connecting rod 610 is engaged in the coaxial arc-shaped guide groove of the disc 64, and the second support plate 68 is slidably sleeved on two sets of coaxial second arc-shaped guide rods 67. The double guidance ensures that the second support plate 68 moves synchronously with the first support plate 63 along the coaxial arc-shaped trajectory. The second clamping ring 69 (equipped with locking bolts 610) on the second support plate 68 clamps the steel pipe, ultimately driving the steel pipe to rotate around the center of the disc 64, thereby achieving butt welding at different angles.

[0027] For details, please refer to Figure 1 , Figure 8 , Figure 9As shown, a machining groove is provided at the upper end of the worktable 1. An arc-shaped plate 7 is slidably engaged at the bottom end of the machining groove via a reciprocating drive assembly 2. A sliding block 8 is provided on the arc-shaped plate 7, sliding along its arc surface. The sliding block 8 is driven to slide along the edge of the arc-shaped plate 7 by a rotating unit 65, identical to the rotating clamping unit 6. A machining assembly 9, which can slide along the Y and Z directions, is provided at the upper end of the sliding block 8. Y is parallel to the short side of the worktable 1, and Z is the height direction of the worktable 1 (as shown in the diagram). Figure 1 (The direction is indicated in the text). The Y and Z direction sliding design can be adjusted by cylinders or motors, lead screws and sliders. By sliding in the Y and Z directions in conjunction with the sliding of the arc plate 7, the processing component 9 can be positioned in the processing position of straight pipe to straight pipe or straight pipe to bent pipe. The processing component 9 includes a welding ring 91 disposed above the sliding block 8. An installation ring 92 is rotatably engaged inside the welding ring 91. A third tooth 93 is provided on the inner circumferential wall of the installation ring 92. A fifth gear 94 is meshed on the lower side of the third tooth 93. The fifth gear 94 is driven to rotate by a motor connected to the welding ring 91. A plurality of mounting plates 95 are provided on one side of the installation ring 92. A processing hydraulic telescopic rod 96 is fixedly disposed on one side of each of the plurality of mounting plates 95. A grinding unit 97 is connected to the lower end of one of the processing hydraulic telescopic rods 96, and a welding torch 98 is connected to the lower end of the other processing hydraulic telescopic rod 96. In this embodiment, the processing component 9 is rotated or moved by a cylinder or motor, lead screw and slider in conjunction with the reciprocating drive assembly 2, so that the welding ring 91 at the upper end of the processing component 9 is always perpendicular to the welding end face, thereby ensuring the grinding and welding accuracy requirements. During processing, the docking position is calculated according to the size of the steel pipe and the steel pipe (straight or bent) to be welded. The welding ring 91 is moved to the welding area, and then the steel pipe and the steel pipe (straight or bent) to be welded are docked inside the welding ring 91. The motor drives the fifth gear 94 to rotate, thereby driving the mounting ring 92 to rotate relative to the welding ring 91, so as to realize the grinding and welding work of the steel pipe. The hydraulic telescopic rod 96 is used to adjust the distance between the welding gun 98 and the grinding unit 97 and the steel pipe.

[0028] For details, please refer to Figure 10 As shown, the grinding unit 97 includes a fixed block 9701 fixedly installed at the lower end of the processing hydraulic telescopic rod 96. The fixed block 9701 has wedge-shaped openings symmetrically opened at both ends. The fixed block 9701 has four grinding components inside. The four grinding components are arranged symmetrically up and down and left and right. The grinding components include two compression springs 9702 fixedly installed inside the fixed block 9701. The lower end of the two compression springs 9702 is provided with the same grinding block 9703, and two grinding channels are formed between the upper and lower opposing grinding blocks 9703. The bottom end of the grinding block 9703 is provided with an inclined surface on the side near the wedge-shaped opening. In this embodiment, the sidewall of the steel pipe is placed in the grinding channel between two symmetrical grinding blocks 9703. The grinding blocks 9703 are rotated by the installation ring 92 to uniformly grind the circumferential sidewall of the steel pipe, which facilitates subsequent welding work. The inclined surface of the grinding block 9703 facilitates the entry of the steel pipe into the pressing grinding block 9703. The grinding block 9703 compresses the compression spring 9702. At the same time, during the grinding process, the compression spring 9702 always maintains the compression of the grinding block 9703, so that the grinding block 9703 always adheres tightly to the sidewall of the steel pipe, thereby improving the grinding quality.

[0029] Example 3: Based on Examples 1 and 2, please refer to... Figure 1 - Figure 10 As shown, in the present invention, a welding device for steel pipe production is used by first placing the steel pipe to be welded on the fixing ring 31 and the first support plate 4, adjusting the height of the first clamping ring 34 so that the center of the first clamping ring 34 is at the same height as the axis of the steel pipe, and then moving the first clamping ring 34 into the interior of the steel pipe by the reciprocating drive assembly 2, and then driving multiple arc-shaped clamping plates 314 to expand and clamp the inner wall of the steel pipe by the clamping servo motor 37, and the processing assembly 9 slides in an arc shape on the upper end of the arc-shaped plate 7 in combination with sliding in the Y and Z directions. Adjust the position so that the welding ring 91 is always perpendicular to the welding end face. Adjust the support angle of the second support plate 66 and the second clamping ring 69 by rotating the clamping unit 6. After the angle is adjusted, place the steel pipe to be connected on the second support plate 66 and the second clamping ring 69. Align the welding surface with the fixed steel pipe. The welding gun 98 of the processing component 9 and the grinding unit 97 can simultaneously complete the uniform grinding and welding of the circumference of the steel pipe by rotating the mounting ring 92. The compression spring 9702 keeps the grinding block 9703 in close contact with the steel pipe to ensure the grinding quality.

[0030] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A welding apparatus for steel pipe production, comprising a workbench (1), wherein a first support plate (4) is fixedly disposed on the upper end of the workbench (1), characterized in that, One end of the workbench (1) is provided with a rotating clamping unit (6), which is used to adjust the welding angle of the steel pipe. The rotating clamping unit (6) includes a first arc-shaped guide rod (61) fixedly disposed on one side of the workbench (1), a guide ring (62) is slidably sleeved on the outer surface of the first arc-shaped guide rod (61), a first support plate (63) is fixedly disposed on the upper end of the guide ring (62), a second support plate (66) is fixedly disposed on the upper end of the first support plate (63), and a rotating unit (65) is disposed on the lower end of the first support plate (63). The rotating unit (65) includes a rotating motor (651) fixedly installed at the lower end of the first support plate (63). A fourth gear (652) is fixedly installed on the output shaft of the rotating motor (651). A disc (64) is fixedly installed on one side of the worktable (1). A second tooth (653) that meshes with the fourth gear (652) is provided on the circumferential side of the disc (64). The upper end of the workbench (1) is slidably connected to an arc plate (7). The upper end of the arc plate (7) is slidably provided with a sliding block (8) through the same structure as the rotating unit (65). The upper end of the sliding block (8) is provided with a processing component (9) that can slide along the Y and Z directions. The processing component (9) is used to realize the grinding and welding of steel pipes.

2. The welding apparatus for steel pipe production as described in claim 1, characterized in that, The rotating clamping unit (6) further includes a second arc-shaped guide rod (67) fixedly disposed on one side of the workbench (1). A second support plate (68) is slidably sleeved on the outer surface of the second arc-shaped guide rod (67). A second clamping ring (69) is fixedly disposed on the upper end of the second support plate (68).

3. The welding apparatus for steel pipe production as described in claim 1, characterized in that, A connecting rod (610) is fixedly provided between the first support plate (63) and the second support plate (68). A ball (611) is rotatably provided at the lower end of the connecting rod (610), and the ball (611) is engaged in the guide groove at the upper end of the disc (64).

4. The welding apparatus for steel pipe production as described in claim 1, characterized in that, The processing component (9) includes a welding ring (91) disposed above the sliding block (8), and an installation ring (92) is rotatably disposed inside the welding ring (91). Multiple installation plates (95) are disposed on one side of the installation ring (92), and a processing hydraulic telescopic rod (96) is fixedly disposed on one side of each of the multiple installation plates (95). The lower ends of the multiple processing hydraulic telescopic rods (96) are respectively connected to a grinding unit (97) and a welding torch (98). The mounting ring (92) has a third tooth (93) on its inner circumferential wall, and a fifth gear (94) is engaged on the lower side of the third tooth (93). The welding ring (91) is equipped with a motor that drives the fifth gear (94) to rotate.

5. The welding apparatus for steel pipe production as described in claim 4, characterized in that, The grinding unit (97) includes a fixing block (9701) fixedly installed at the lower end of the processing hydraulic telescopic rod (96), and multiple grinding components are provided inside the fixing block (9701); Each polishing assembly includes two compression springs (9702) fixedly disposed inside a fixed block (9701). The lower ends of the two compression springs (9702) are each provided with the same polishing block (9703), and a polishing channel is formed between the upper and lower opposing polishing blocks (9703).

6. The welding apparatus for steel pipe production as described in claim 1, characterized in that, The upper end of the workbench (1) is slidably provided with a clamping assembly (3), which includes a fixing ring (31) and a support frame (32) slidably provided on the upper end of the workbench (1). A clamping hydraulic telescopic rod (33) is slidably provided on one side of the support frame (32). A first clamping ring (34) is fixedly provided on the output shaft of the clamping hydraulic telescopic rod (33). A circular ring (35) is rotatably provided on one side of the first clamping ring (34). A first tooth (36) is provided on the inner circumferential wall of the circular ring (35). A clamping servo motor (37) is provided inside the first clamping ring (34). A first gear (38) that meshes with the first tooth (36) is fixedly provided on the output shaft of the clamping servo motor (37). The first clamping ring (34) has a plurality of rotating rods (39) arranged in a ring array on one side. The outer surfaces of the plurality of rotating rods (39) are fixedly provided with a second gear (310) that meshes with the first tooth (36). The ends of the plurality of rotating rods (39) are all fixedly provided with a third gear (311) on the same axis. The first clamping ring (34) has a plurality of L-shaped plates (312) arranged in a ring array on one side. The L-shaped plates (312) are slidably engaged with a toothed plate (313) that meshes with the third gear (311) on one side.

7. The welding apparatus for steel pipe production as described in claim 6, characterized in that, Each of the toothed plates (313) has an arc-shaped clamp (314) fixedly installed at its upper end.

8. The welding apparatus for steel pipe production as described in claim 5, characterized in that, The fixing block (9701) has wedge-shaped openings at both ends, and the grinding blocks (9703) have inclined surfaces on the side near the wedge-shaped openings.

9. The welding apparatus for steel pipe production as described in claim 1, characterized in that, The upper end of the workbench (1) is provided with a support base (5); The support base (5) includes a support base (51) fixedly installed on the upper end of the workbench (1). The upper end of the support base (51) is provided with an arc-shaped groove, and multiple support rollers (52) are rotatably arranged inside the arc-shaped groove.

10. The welding apparatus for steel pipe production as described in claim 6, characterized in that, The bottom arc-shaped support surfaces of the first tray (4), the second tray (66) and the first clamping ring (34) are on the same horizontal plane.

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