Pipe joint rotary welding equipment

Abstract

The present invention provides a pipe joint rotary welding device, which belongs to the technical field of pipe joint rotary welding devices. It solves the technical problem of insufficient processing efficiency of existing pipe joint rotary welding devices. The pipe joint rotary welding device includes a workbench, which is connected to a loading turntable, a rotary melting frame and a calibration frame. The loading turntable is connected to a positioning sleeve, the rotary melting frame is rotatably connected to a rotary melting sleeve, the calibration frame is connected to a lifting seat one, and the bottom of the lifting seat one is rotatably connected to a calibration sleeve. The inner wall of the calibration sleeve has vertical edges, and the calibration sleeve and the rotary melting sleeve can be respectively opposite to different positioning sleeves. When the calibration sleeve moves down with the lifting seat and is pressed onto the upper pipe joint, the calibration sleeve can make the vertical edges continue to move down to form circumferential positioning with the upper pipe joint, and the calibration sleeve can be rotated to the initial circumferential angle position after forming circumferential positioning with the upper pipe joint. When the upper pipe joint separated from the calibration sleeve moves to the bottom of the rotary melting sleeve, the rotary melting sleeve can move down to circumferentially position with the upper pipe joint. The present invention can effectively improve processing efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary melting devices and relates to a pipe joint rotary melting device. Background Art

[0002] Rotary friction welding machines are generally used to weld two circular workpieces; during welding, the lower cover is fixed, the upper cover rotates and fully contacts the lower cover. Due to a certain pressure acting on the two workpieces, the heat generated by the friction between the two workpieces can melt the contact surfaces of the two workpieces and form a tight and airtight combination, thereby achieving the purpose of welding. Pipe fittings can also be welded by spin melting. The outer periphery of the upper and lower pipe fittings has a number of ribs evenly spaced circumferentially and arranged axially to facilitate circumferential positioning with the positioning sleeve.

[0003] The patent with authorization announcement number CN207746543U discloses a rotary friction welding machine, which includes a machine platform, a turntable device installed on the machine platform, a plurality of clamps installed on the turntable device, a rotary welding device for rotary welding materials, and a discharge device for outputting the welded materials, the clamp includes a lower mold fixture for carrying materials and a discharge drive mechanism for driving the lower mold fixture to discharge materials, the discharge drive mechanism is installed on the turntable device, the rotary welding device cooperates with the lower mold fixture to rotary weld materials; the upper mold fixture and the lower mold fixture are both provided with a clamping groove for clamping the material.

[0004] The above equipment can automatically realize the spin welding of the product, but for the pipe fitting product, the angle position of the upper pipe fitting is uncertain when it is placed, and the clamping groove of the upper mold fixture cannot be directly aligned with the product to form a positioning, and needs to be debugged again, which affects the processing efficiency. For this reason, technicians in the field usually tend to consider: 1. Setting a retractable positioning block in the upper mold fixture, and the positioning block pops out and positions between the ribs during the rotation of the upper mold fixture to achieve circumferential positioning; 2. Setting structures such as guide surfaces in the upper mold fixture, so that the ribs slide along the guide surfaces by themselves during the downward movement of the upper mold fixture and finally align to achieve positioning. Summary of the invention

[0005] In view of the above problems existing in the prior art, the present invention provides a pipe joint rotary welding device. The technical problem to be solved by the present invention is that the processing efficiency of the prior pipe joint rotary welding device is insufficient.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A pipe joint rotary welding device comprises a workbench, on which a horizontal material-carrying turntable is rotatably connected, on which at least three positioning sleeves evenly spaced along the circumference are connected, and a rotary melting frame is also connected to the workbench, on which a rotary melting sleeve that can reciprocate vertically is rotatably connected, characterized in that the rotary melting sleeve can stop at a preset circumferential angle position when it stops rotating, and the workbench is also connected to a calibration frame, on which a lifting seat 1 that can reciprocate vertically is connected, and a cylindrical calibration sleeve is rotatably connected to the bottom of the lifting seat 1, and the The inner wall of the calibration sleeve has a plurality of vertical ridges evenly spaced along the circumferential direction. The calibration sleeve is vertically arranged and can respectively face the different positioning sleeves below together with the rotary melting sleeve. When the calibration sleeve moves down with the lifting seat and is pressed onto the upper pipe joint, the calibration sleeve can rotate relative to the upper pipe joint so that the vertical ridges can continue to move down to form a circumferential positioning with the upper pipe joint. After the calibration sleeve forms a circumferential positioning with the upper pipe joint, it can continue to rotate to or return to the initial circumferential angle position. When the upper pipe joint detached from the calibration sleeve moves to directly below the rotary melting sleeve, the rotary melting sleeve can move down and directly position itself circumferentially with the upper pipe joint.

[0008] The positioning sleeve can cooperate with the lower pipe joint to achieve circumferential positioning. During welding, the lower pipe joint can be placed in the positioning sleeve, and the upper pipe joint can be placed on the lower pipe joint. The loading turntable can rotate so that the positioning sleeve on it drives the lower pipe joint and the upper pipe joint to move from the loading position to the bottom of the rotary melting sleeve. At this time, the rotary melting sleeve can be pressed down and cooperate with the upper pipe joint directly below to achieve circumferential positioning. After that, the rotary melting sleeve is pressed down on the upper pipe joint and rotated at high speed to cause a large amount of heat to form a molten state at the joint between the upper pipe joint and the lower pipe joint, and the welding is completed after the rotary melting sleeve stops instantly. By setting, the rotary melting sleeve can stop at a preset circumferential angle position when it stops rotating. The preset circumferential angular position includes multiple angle values ​​(n, n+1, n+2...), the number of which is consistent with the number of ribs on the outer periphery of the upper pipe joint, and the multiple angle values ​​are evenly distributed in the range of 0 to 360 degrees. Due to the central symmetric structure of the rotary melting sleeve, the structural position relative to the workbench is the same when it stops at any angle value. Specifically, the rotary melting sleeve can be controlled to rotate by a servo motor, a calibration frame is set on the workbench, and a lifting seat that can move up and down is connected to the calibration frame, and a cylindrical and vertically arranged calibration sleeve is rotatably connected to the bottom of the lifting seat, so that the calibration sleeve and the rotary melting sleeve can be located at different fixed positions at the same time The upper tube joint is directly above the positioning sleeve, and the lifting seat drives the calibration sleeve to move down and press it to the upper tube joint so that the calibration sleeve can rotate relative to the upper tube joint, so that the vertical ridges in the calibration sleeve can be misaligned with the ribs of the upper tube joint and continue to move down to form circumferential positioning. After the calibration sleeve forms a circumferential positioning with the upper tube joint, it will continue to rotate to or rotate back to the initial circumferential angle position. In this way, the upper tube joint can first move to the calibration sleeve with the positioning sleeve. If the vertical ridges of the calibration sleeve cannot directly form a circumferential positioning with the upper tube joint when it moves down, it will be pressed against the ribs of the upper tube joint. Then the calibration sleeve slowly rotates relative to the upper tube joint, and the ribs on the outer periphery of the upper tube joint and the vertical ridges on the inner wall of the calibration sleeve are offset. When the edges are misaligned, the calibration sleeve can continue to move down to achieve circumferential positioning, and then the calibration sleeve continues to rotate or turn back to the initial circumferential angle position. The rotation control of the calibration sleeve can be achieved by a private service motor or a motor with a sensor control element. In this way, the upper pipe joint calibrated by the calibration sleeve is moved to the bottom of the rotary melting sleeve with the loading turntable, and its circumferential angle position is a certain value and can be adapted to the preset circumferential angle position of the rotary melting sleeve. Then, the rotary melting sleeve can be moved down to directly form circumferential positioning with it and then quickly rotary melt, eliminating the need for manual calibration, and the calibration process and the rotary melting process can be performed automatically and synchronously at different workstations, effectively improving processing efficiency.

[0009] In the above-mentioned pipe joint rotary welding equipment, the positioning sleeve is unidirectionally connected to the material loading turntable, and the rotation direction of the rotary melting sleeve is opposite to the rotatable direction of the positioning sleeve. In this way, when the rotary melting sleeve drives the upper pipe joint to rotate at high speed, the lower pipe joint can keep its position fixed to ensure the rotary melting effect, and in the process of the calibration sleeve pressing down to form circumferential positioning with the upper pipe joint, the vertical edges in the calibration sleeve will press on the ribs of the upper pipe joint and rotate relatively to make the two misaligned and finally positioned circumferentially. In this way, when the misalignment is about to be formed, the vertical edges will squeeze the ribs of the upper pipe joint and make the upper pipe joint, the lower pipe joint and the positioning sleeve able to rotate adaptively in the rotatable direction, thereby realizing the rapid and smooth positioning of the calibration sleeve and the upper pipe joint, while avoiding excessive extrusion loss with the ribs on the outer periphery of the upper pipe joint during the downward movement of the vertical edges, thereby ensuring product quality and equipment life.

[0010] In the above-mentioned pipe joint rotary welding equipment, a downwardly disposed position sensor is fixedly connected to the lifting seat, and the calibration sleeve has an upwardly disposed metal sensing column opposite to the position sensor. In this way, when the calibration sleeve rotates to make the metal sensing column sense and generate a signal with the position sensor again, the calibration sleeve has been reset to the original angle position, which is conducive to cooperating with a common drive motor and a controller to realize the reset control of the calibration sleeve, and is conducive to saving equipment costs.

[0011] In the above-mentioned pipe joint rotary welding equipment, the calibration frame is connected to a connection seat 1 whose position can be adjusted up and down and locked with the calibration frame, and the lifting seat 1 is connected to a vertically arranged driving cylinder, and the output end of the driving cylinder is connected to the connection seat 1. There are differences in the vertical heights of pipe joint products of different sizes, and the stroke range of the driving cylinder is fixed, which is conducive to the operator to adjust the initial height position of the calibration sleeve according to the actual pipe joint product, improve the applicability, and also facilitate the fine adjustment of the downward pressure of the calibration sleeve through height changes according to the actual production situation, and the adjustment is more convenient.

[0012] In the above-mentioned pipe joint rotary welding equipment, the rotary welding frame is connected to a connection seat 2 whose position can be adjusted up and down and locked with the rotary welding frame, and the rotary welding sleeve is connected to the connection seat 2 and can move up and down relative to the connection seat 2. Similarly, this is conducive to the operator to conveniently adjust the height position of the rotary welding sleeve according to the height of the pipe joint product, thereby improving applicability.

[0013] In the above-mentioned pipe joint rotary welding equipment, the workbench is also connected with a rotary material rack, and a vertically movable driving sleeve is rotatably connected to the rotary material rack. The driving sleeve is cylindrical and vertically arranged downward. The driving sleeve, rotary melting sleeve and calibration sleeve can respectively face the different positioning sleeves below. The workbench is also fixed with a tool holder, and a strip-shaped scraper that can be raised and lowered is connected to the tool holder. The scraper is strip-shaped and one end is arranged toward the side where the positioning sleeve is located. In this way, the upper pipe joint and the lower pipe joint that have completed rotary melting can be moved to the bottom of the driving sleeve with the positioning sleeve, and the driving sleeve moves downward to form a circumferential positioning with the upper pipe joint to drive the entire pipe joint to rotate. The specific rotation direction of the driving sleeve should be opposite to the rotation direction of the rotary melting sleeve, and the end of the scraper facing the positioning sleeve can be vertically moved along the maximum outer diameter of the pipe joint, so that when the scraper passes through the pipe joint, the overflowing flash can be gradually scraped off, and this process can be carried out simultaneously with the calibration and rotary melting to ensure product quality and processing efficiency.

[0014] In the above-mentioned pipe joint rotary welding equipment, the knife holder is connected to two stroke switches arranged at intervals in the upper and lower directions, and the scraper is arranged horizontally and the other end of the scraper is located between the two stroke switches. This is conducive to the design that the scraper stops moving when it reaches a stroke switch during vertical movement and changes direction to move toward the other stroke switch when it is turned on next time. Each time it runs, it only moves in one direction, which saves the time of retracting the scraper and improves the processing efficiency.

[0015] In the above-mentioned pipe joint rotary welding equipment, the tool holder is connected to a lifting seat 2 that can move up and down, and the scraper is axially slidably connected to the lifting seat 2 and locked with the lifting seat 2. This is conducive to adjusting the axial position of the scraper relative to the tool holder, and is thus suitable for processing pipe joint products with different outer diameters and improved adaptability.

[0016] In the above-mentioned pipe joint rotary welding equipment, the rotary frame is connected with a connection seat 3 whose position can be adjusted up and down and locked with the rotary frame, and the drive sleeve is connected to the connection seat 3 and can move up and down relative to the connection seat 3. This is conducive to the operator to conveniently adjust the height position of the drive sleeve according to the height of the pipe joint product, thereby improving applicability.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] During the processing of the pipe joint rotary welding equipment, if the ribs on the outer periphery of the upper pipe joint cannot be aligned with the positioning grooves on the inner wall of the calibration sleeve, the calibration sleeve will first be pressed on the ribs on the outer periphery of the upper pipe joint and rotate relative to the upper pipe joint. After gradually rotating until the ribs on the outer periphery of the upper pipe joint are aligned, the calibration sleeve will fall down by itself to achieve circumferential positioning with the upper pipe joint. After that, the calibration sleeve will continue to rotate or return to the initial angle position, and the rotary melting sleeve will also maintain the initial angle position. In this way, the upper pipe joint calibrated by the calibration sleeve maintains a specified angle so that it moves to the bottom of the rotary melting sleeve. After that, the rotary melting sleeve moves down to directly form circumferential positioning with it and then quickly rotary melts, eliminating the need for manual calibration. In addition, the calibration process and the rotary melting process can be performed automatically and synchronously at different workstations, effectively improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.

[0020] Figure 2 yes Figure 1 Enlarged view of part A in .

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure from another angle of this embodiment.

[0022] Figure 4 It is a three-dimensional schematic diagram of the local structure of this embodiment.

[0023] In the figure, 1, workbench; 2, material loading turntable; 3, positioning sleeve;

[0024] Spinning frame; 41, spinning sleeve; 42, connecting seat 2;

[0025] 5. Calibration frame; 51. Lifting seat 1; 52. Calibration sleeve; 521. Vertical edge; 53. Position sensor; 54. Metal sensing column; 55. Connecting seat 1; 56. Driving cylinder;

[0026] 6. Rotary rack; 61. Driving sleeve; 62. Connecting seat three;

[0027] 7. Tool holder; 71. Scraper; 72. Travel switch; 73. Lifting seat 2. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] like Figure 1-4As shown, the pipe joint rotary welding equipment includes a workbench 1, the workbench 1 is connected to a horizontal material loading turntable 2, the material loading turntable 2 is connected to six positioning sleeves 3 arranged evenly spaced around the circumference, the inner cavity side wall of the positioning sleeve 3 can form a circumferential positioning match with eight ribs on the outer periphery of the lower pipe joint, the workbench 1 is also connected to a rotary melting frame 4, the rotary melting frame 4 is connected to a rotary melting sleeve 41 that can move back and forth vertically and can actively rotate, the inner cavity structure of the rotary melting sleeve 41 is basically the same as the inner cavity structure of the positioning sleeve 3, and the rotary melting The sleeve 41 is located directly above a positioning sleeve 3. The rotary melting sleeve 41 can stop at a preset first circumferential angle position when it stops. Specifically, the preset circumferential angle position includes eight angle values, namely 0 degrees, 45 degrees, 90 degrees, 135 degrees, 180 degrees, 225 degrees, 270 degrees and 315 degrees. The rotation of the rotary melting sleeve 41 is driven by a servo motor to ensure that it can stop at the above circumferential angle position. The lifting of the rotary melting sleeve 41 can be driven by a cylinder. The workbench 1 is also connected to a calibration frame 5. The calibration frame 5 is connected to the workbench 1. The calibration frame 5 is connected to a lifting seat 51 that can reciprocate vertically. The bottom of the lifting seat 51 is connected to a calibration sleeve 52 that is cylindrical and can rotate actively. The inner cavity of the calibration sleeve 52 has eight vertical edges 521 that are evenly spaced circumferentially. The vertical edges 521 can form a circumferential positioning match with the eight ribs on the outer periphery of the upper pipe joint. The calibration sleeve 52 is vertically arranged and located directly above another positioning sleeve 3 adjacent to the spin-melting sleeve 41, reducing the probability of angular position changes during the transportation of the upper pipe joint. The calibration sleeve 52 can As the lifting seat 51 moves downward and presses onto the upper pipe joint, the calibration sleeve 52 can then rotate relative to the upper pipe joint to dislocate the vertical edge 521 and the ribs on the outer periphery of the upper pipe joint and continue to move downward to achieve circumferential positioning with the upper pipe joint. The calibration sleeve 52 then rotates back to the initial circumferential angle position. The upper pipe joint rotates with the loading turntable 2 and moves to the bottom of the rotary melting sleeve 41 after the circumferential angle changes by 60 degrees, and can just match any preset circumferential angle of the rotary melting sleeve 41, so that the rotary melting sleeve 41 can move downward and directly position circumferentially with the upper joint. The positioning sleeve 3 is unidirectionally rotatably connected to the loading turntable 2. Specifically, the unidirectional rotation between the positioning sleeve 3 and the loading turntable 2 can be achieved through a one-way bearing or a ratchet structure, and the rotation direction of the rotary melting sleeve 41 is the same as the rotatable direction of the positioning sleeve 3. A downwardly disposed position sensor 53 is fixedly connected to the lifting seat 1 51, and the position sensor 53 is an existing component. The calibration sleeve 52 has a metal sensing column 54 disposed upwardly and opposite to the position sensor 53. Further, the calibration frame 5 is connected with a connecting seat 1 55 whose position can be adjusted up and down and locked with the calibration frame 5. The connecting seat 1 55 cooperates with the vertical rack on the calibration frame 5 through an internal gear, and the internal gear can be driven to rotate by a worm mechanism and realize self-locking. The lifting seat 1 51 is connected with a vertically disposed driving cylinder 56, and the output end of the driving cylinder 56 is connected to the connecting seat 1 55.Similarly, the rotary melting frame 4 is connected to a connecting seat 2 42 whose position can be adjusted up and down and locked with the rotary melting frame 4. The rotary melting sleeve 41 is connected to the connecting seat 2 42 and can be driven by a driving cylinder connected to the connecting seat 2 42 to move up and down. The matching structure between the connecting seat 2 42 and the rotary melting frame 4 can refer to the connection structure between the connecting seat 1 55 and the calibration frame 5.

[0030] like Figure 1 , Figure 3 As shown, the workbench 1 is also connected to a rotating rack 6, and the rotating rack 6 is connected to a driving sleeve 61 that can move vertically and can rotate actively. The inner cavity structure of the driving sleeve 61 is basically the same as the inner cavity structure of the positioning sleeve 3. The driving sleeve 61 is cylindrical and vertically arranged. The driving sleeve 61 is located directly above the positioning sleeve 3 adjacent to the rotary melting sleeve 41. The workbench 1 is also fixed with a tool holder 7, and the tool holder 7 is connected to a strip-shaped scraper 71 that can be lifted up and down. The scraper 71 is strip-shaped and one end is arranged toward the side where the positioning sleeve 3 is located. The tool holder 7 is connected to two travel switches 72 arranged at intervals up and down, and the scraper 71 is horizontally arranged and the other end of the scraper 71 is located between the two travel switches 72. The tool holder 7 is connected with a lifting seat 2 73 that can move up and down. The lifting seat 2 73 is lifted and lowered by an existing screw transmission mechanism controlled by a motor. The scraper 71 is connected to the lifting seat 2 73 along the axial sliding direction and locked with the lifting seat 2 73. Specifically, the scraper 71 is locked by an adjustment screw that is vertically connected to the lifting seat 2 73 and rests on the surface of the scraper 71. The rotary rack 6 is connected with a connecting seat 3 62 whose position can be adjusted up and down and locked with the rotary rack 6. The driving sleeve 61 is connected to the connecting seat 3 62 and can be driven by the driving cylinder to move up and down relative to the connecting seat 3 62. The matching structure of the connecting seat 3 62 and the rotary rack 6 can refer to the connection structure of the connecting seat 1 55 and the calibration rack 5, and the connection structure of the driving sleeve 61 and the connecting seat 3 62 can refer to the connection structure of the calibration sleeve 52 and the connecting seat 1 55. The signal processing and circuit connection of the upper pipe joint calibration and the conveying rotary melting action are realized by controlling the coordinated action of the above-mentioned driving mechanism through the existing controller according to the recorded logical process, which belongs to the prior art.

[0031] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A pipe joint rotary welding device, comprising a workbench (1), a horizontal material loading turntable (2) being rotatably connected to the workbench (1), at least three positioning sleeves (3) being evenly spaced along the circumferential direction being connected to the material loading turntable (2), the workbench (1) being further connected to a rotary welding frame (4), a rotary welding sleeve (41) being rotatably connected to the rotary welding frame (4) and being capable of vertical reciprocating movement, characterized in that: The spin-melting sleeve (41) can stop at a preset angle position when it stops rotating. The workbench (1) is also connected to a calibration frame (5). The calibration frame (5) is connected to a lifting seat (51) that can move vertically back and forth. The bottom of the lifting seat (51) is rotatably connected to a cylindrical calibration sleeve (52). The inner wall of the calibration sleeve (52) has a plurality of vertical edges (521) that are evenly spaced along the circumferential direction. The positioning sleeve (3) is unidirectionally rotatably connected to the material loading turntable (2). The rotation direction of the spin-melting sleeve (41) is opposite to the rotation direction of the positioning sleeve (3). The calibration sleeve (52) is rotatably connected to the material loading turntable (2). 2) being arranged vertically and being able to face the different positioning sleeves (3) below together with the rotary melting sleeve (41), when the calibration sleeve (52) moves downward along with the lifting seat (51) and is pressed onto the upper pipe joint, the calibration sleeve (52) can rotate relative to the upper pipe joint so that the vertical edge (521) can continue to move downward to form a circumferential positioning with the upper pipe joint, and after the calibration sleeve (52) and the upper pipe joint form a circumferential positioning, they can continue to rotate to or rotate back to the initial circumferential angle position, and when the upper pipe joint separates from the calibration sleeve (52) and moves to the bottom of the rotary melting sleeve (41), the rotary melting sleeve (41) can move downward and directly be circumferentially positioned with the upper pipe joint.

2. The pipe joint rotary welding equipment according to claim 1, characterized in that: A downwardly disposed position sensor (53) is fixedly connected to the lifting seat (51), and the calibration sleeve (52) has an upwardly disposed metal sensing column (54) opposite to the position sensor (53).

3. The pipe joint rotary welding equipment according to claim 1 or 2, characterized in that: The calibration frame (5) is connected to a connecting seat (55) whose position can be adjusted up and down and locked to the calibration frame (5), and the lifting seat (51) is connected to a vertically arranged driving cylinder (56), and the output end of the driving cylinder (56) is connected to the connecting seat (55).

4. The pipe joint rotary welding equipment according to claim 1 or 2, characterized in that: The rotary melting frame (4) is connected to a second connecting seat (42) whose position can be adjusted up and down and locked with the rotary melting frame (4), and the rotary melting sleeve (41) is connected to the second connecting seat (42) and can move up and down relative to the second connecting seat (42).

5. The pipe joint rotary welding equipment according to claim 1 or 2, characterized in that: The workbench (1) is also connected to a rotating rack (6), and a driving sleeve (61) which can move vertically and can actively rotate is connected to the rotating rack (6), and the driving sleeve (61) is cylindrical and arranged vertically downward, and the driving sleeve (61) is located directly above another positioning sleeve (3). The workbench (1) is also fixedly provided with a tool holder (7), and a strip-shaped scraper (71) which can be raised and lowered is connected to the tool holder (7), and the scraper (71) is strip-shaped and one end of which is arranged toward the side where the positioning sleeve (3) is located.

6. The pipe joint rotary welding equipment according to claim 5, characterized in that: The knife holder (7) is connected to two travel switches (72) spaced apart from each other in an upper and lower direction. The scraper (71) is arranged horizontally and the other end of the scraper (71) is located between the two travel switches (72).

7. The pipe joint rotary welding equipment according to claim 5, characterized in that: The tool holder (7) is connected to a second lifting seat (73) that can move up and down, and the scraper (71) is axially slidably connected to the second lifting seat (73) and is locked with the second lifting seat (73).

8. The pipe joint rotary welding equipment according to claim 5, characterized in that: The rotary material frame (6) is connected to a connecting seat three (62) whose position can be adjusted up and down and locked with the rotary material frame (6), and the driving sleeve (61) is connected to the connecting seat three (62) and can move up and down relative to the connecting seat three (62).

Images