Pipeline welding machine

Abstract

The invention discloses a pipeline welding machine, belongs to the technical field of pipeline machining, and solves the problem that the position of a pipeline needs to be manually adjusted when an existing pipeline welding machine is used, the pipeline welding machine comprises a connecting shell, an upper rotating ring, a welding machine body and a lower shell, and the upper rotating ring is rotationally installed at the top end of the connecting shell. The positioning mechanism is arranged, two sets of telescopic air cylinders controlled separately are matched with a sealing plate and a sealing block, a to-be-welded pipeline is rapidly positioned and calibrated, it is guaranteed that the welding part of the pipeline is located in the working area of the welding machine body, argon is input into the pipeline through the sealing block subsequently, and the welding efficiency is improved. And an air outlet column is arranged on the side face of the sealing plate, the air pressure inside and outside the pipeline is balanced, the whole welding machine is assisted in stably welding and machining the pipeline, and the overall working quality of the equipment is improved.

Description

Technical Field

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

[0002] A pipeline is a device connected by pipes, pipe connectors and valves for transporting gas, liquid or fluid with solid particles. In order to extend the length of metal pipelines and repair metal pipeline leaks, welding machines are generally used to weld pipelines. Different welding machines are used for welding pipelines of different specifications. When welding pipelines of specific specifications, special automatic welding machines are used to weld pipelines. Among them, the XD-80 welding machine is the most commonly used one.

[0003] When using the existing XD-80 welding machine, the pipes to be welded need to be spliced and placed in the welding machine. After the position of the pipes is fixed by rotating the rotating arm of the welding machine, the pipes are welded using the welding gun that rotates with the pipes as the axis in the welding machine. However, there are certain problems in actual use. Specifically, when the equipment is used, before the pipes are placed, the pipe connections that need to be docked need to be marked and fixed by the cold welding machine, and subsequently the staff needs to manually adjust the position of the pipes to be welded and move the part of the pipe to be welded to the target position in the welding machine. This working method invisibly prolongs the overall processing time of the equipment and affects the overall working quality of the equipment. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] In order to solve the problems raised in the above background technology, the present invention adopts the following technical solutions.

[0006] A pipeline welding machine comprises a connecting shell, an upper rotating ring, a welding machine body and a lower shell. The upper rotating ring is rotatably installed on the top of the connecting shell, the welding machine body for welding at the pipeline weld is installed inside the connecting shell, and the lower shell is installed at the bottom of the connecting shell. Positioning mechanisms for quickly positioning and splicing the pipelines to be welded are installed on both sides of the connecting shell. The positioning mechanisms include a guide bracket, a mounting block, a telescopic cylinder, a sealing plate and a sealing block. The guide bracket is symmetrically installed on both sides of the connecting shell, the mounting block is installed on the side of the guide bracket, and the telescopic cylinder is installed on the upper surface of the mounting block. There are two groups of telescopic cylinders in total. The sealing plate is installed at the output end of one group of telescopic cylinders, and the sealing block is installed at the output end of the other group of telescopic cylinders.

[0007] As a preferred technical solution of the present invention, the sealing block includes a pushing base plate, a sealing pad, an air outlet column and an air injection end. The pushing base plate is installed on the output end of the telescopic cylinder, the sealing pad is fixedly installed on the side of the pushing base plate, and the sealing pad is slidably connected to the pipeline. The air outlet column is installed on the side of the pushing base plate, and the air injection end is installed on another group of the pushing base plate. The air outlet column is internally connected to the air injection end.

[0008] As a preferred technical solution of the present invention, two groups of air outlet holes are provided on the outer surface of the air outlet column, and the air outlet holes are provided on the side of the air outlet column.

[0009] As a preferred technical solution of the present invention, the sealing plate includes a movable side plate, a fitting block, an exhaust pipe and a sealing block. The movable side plate is installed at the output end of the telescopic cylinder, the fitting block is installed on the side of the movable side plate, the exhaust pipe is installed on the other side of the movable side plate, and the sealing block is installed on the side of the exhaust pipe, wherein the exhaust pipe and the movable side plate are jointly provided with a pressure relief hole for exhausting gas.

[0010] As a preferred technical solution of the present invention, the positioning mechanism also includes a movable guide rail and a sliding plate, the movable guide rails are symmetrically installed on both sides of the guide bracket, the sliding plate is slidably installed on the upper surface of the movable guide rail, and there are two groups of sliding plates in total, the sliding plates are connected to the sealing plate and the sealing block, and the surface of one group of movable guide rails is equidistantly provided with scale grooves, and a marking block is installed on the side of the sliding plate sliding on the surface of this group of movable guide rails.

[0011] As a preferred technical solution of the present invention, the pipeline welding machine also includes a cleaning mechanism, which includes a fixed side ring, a cleaning steel brush, a fixed screw and a fixed screw groove. The fixed side ring is symmetrically arranged on both sides of the connecting shell and the upper rotating ring. There are four groups of fixed side rings in total. The cleaning steel brush is installed on the inner wall of the fixed side ring. The cleaning steel brush cleans the outer wall of the sliding pipe. The fixed screw groove is symmetrically opened inside the fixed side ring. The fixed screw is threadedly installed in the fixed screw groove, and the fixed screw passes through the fixed screw and is threadedly connected to the side wall of the connecting shell and the upper rotating ring.

[0012] As an optimal technical solution of the present invention, the upper rotating ring is rotatably installed on the top of the connecting shell, and a clamping seat is symmetrically fixedly installed on the side of the upper rotating ring. A clamping piece for clamping the clamping seat is installed on the side of the connecting shell at the bottom end of the clamping seat.

[0013] As a preferred technical solution of the present invention, the clamping part consists of a rotating frame, a toggle handle and a clamping ring. The rotating frame is symmetrically installed on the side of the connecting shell, the toggle handle is rotatably installed on the outside of the rotating frame, and the clamping ring is arranged at the top of the toggle handle. The clamping ring is engaged with the clamping seat.

[0014] As a preferred technical solution of the present invention, the pipe welding machine further includes an installation mechanism, and the installation mechanism includes an installation bracket, an installation groove, a pressing top plate and a pressing screw. The installation bracket is installed on the side of the lower housing. An installation groove is formed inside the installation bracket. The pressing top plate is slidably installed in the installation groove. The pressing screw is rotatably installed at the top end of the pressing top plate and is threadedly connected to the side wall of the installation bracket.

[0015] As a preferred technical solution of the present invention, the installation mechanism further includes a rotating bracket. The rotating bracket is fixedly installed at the end of the pressing screw, and rotating handles are installed on both sides of the rotating bracket.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, by setting the positioning mechanism, with the cooperation of two separately controlled telescopic cylinders, the sealing plate and the sealing block, rapid positioning and calibration of the pipe to be welded are carried out, and it is ensured that the welded part of the pipe is within the working area of the main body of the welding machine. Subsequently, through the use of the sealing block, argon gas is input into the pipe to prevent oxidation of the pipe during the welding process. And an air outlet column is provided on the side of the sealing plate to balance the air pressure inside and outside the pipe, assisting the overall welding machine to perform stable welding and processing on the pipe, improving the overall working quality of the equipment.

[0017] In the present invention, by setting the cleaning mechanism, the alternating movement of the output ends of the two telescopic cylinders is used to drive the welded pipe to move reciprocally. During the movement of the pipe, the cleaning steel brush stably cleans the welding marks on the outer wall of the pipe. And subsequently, through the installation mechanism, the position of the overall equipment is quickly locked, accelerating the overall working speed of the equipment and improving the overall working quality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is another perspective schematic diagram of the overall structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the positioning mechanism of the present invention.

[0021] Figure 4 It is an enlarged schematic diagram of the positioning mechanism in the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the sealing block of the present invention.

[0023] Figure 6 It is a schematic diagram of the disassembled structure of the sealing block in the present invention.

[0024] Figure 7Schematic diagram of the sealing plate structure of the present invention.

[0025] Figure 8 Schematic diagram of the cleaning mechanism structure in the present invention.

[0026] Figure 9 Schematic diagram of the installation mechanism structure in the present invention.

[0027] The corresponding relationship between the labels of each attached drawing in the figure and the component names is as follows: 1. Connecting housing; 2. Upper rotating ring; 3. Welding machine main body; 4. Lower housing; 5. Positioning mechanism; 51. Guide bracket; 52. Installation plot; 53. Telescopic cylinder; 54. Sealing plate; 541. Moving side plate; 542. Fitting block; 543. Exhaust pipe; 544. Sealing plug; 55. Sealing block; 551. Pushing bottom plate; 552. Sealing cushion plate; 553. Air outlet column; 554. Gas injection end; 56. Moving guide rail; 57. Sliding plate; 6. Cleaning mechanism; 61. Fixed side ring; 62. Cleaning steel brush; 63. Fixed screw; 64. Fixed screw groove; 7. Installation mechanism; 71. Installation bracket; 72. Installation groove; 73. Extrusion top plate; 74. Extrusion screw; 75. Rotating bracket; 8. Clamping seat; 9. Clamping part. Detailed implementation manners

[0028] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the drawings of the specification.

[0029] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0030] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0031] By Figure 1 and Figure 2As shown in the figure, it is a schematic structural diagram of the pipe welding machine in this embodiment, including a connecting housing 1, an upper rotating ring 2, a welding machine main body 3, and a lower housing 4. The upper rotating ring 2 is rotatably installed at the top of the connecting housing 1. The welding machine main body 3 for welding the pipe weld is installed inside the connecting housing 1. The lower housing 4 is installed at the bottom of the connecting housing 1. Positioning mechanisms 5 for quickly positioning and splicing the pipes to be welded are installed on both sides of the connecting housing 1.

[0032] During use, the pipes to be welded are placed on both sides of the connecting housing 1 according to their lengths. Then, through the operation of the positioning mechanism 5, the positions of the pipes to be welded are squeezed and adjusted, driving the two groups of pipes to complete butt joint. At this time, the joint of the pipe butt joint is located inside the welding machine main body 3, which is convenient for the subsequent welding machine main body 3 to perform stable welding on the joint. When the pipe positioning is completed, the overall angle of the upper rotating ring 2 is rotated so that the upper rotating ring 2 fits with the connecting housing 1, completing the locking and positioning of the overall position of the equipment. Then, through the operation of the welding machine main body 3, stable welding is performed on the butt-jointed pipes, realizing the rapid processing of the pipes, ensuring the working quality of the equipment itself, and improving the overall working efficiency of the equipment.

[0033] As shown in the attached Figure 3 figure, it is a schematic structural diagram of the positioning mechanism 5 in this embodiment. The positioning mechanism 5 includes a guiding bracket 51, a mounting block 52, a telescopic cylinder 53, a sealing plate 54, and a sealing block 55. The guiding brackets 51 are symmetrically installed on both sides of the connecting housing 1. The mounting block 52 is installed on the side of the guiding bracket 51. The telescopic cylinder 53 is installed on the upper surface of the mounting block 52. There are two groups of telescopic cylinders 53 in total. The sealing plate 54 is installed at the output end of one group of telescopic cylinders 53, and the sealing block 55 is installed at the output end of the other group of telescopic cylinders 53.

[0034] During use, the pipes to be welded are respectively placed on the surfaces of the two groups of guiding brackets 51. According to the different lengths of the pipes to be welded, the two groups of telescopic cylinders 53 are driven. At this time, there is a certain difference in the moving distances of the output ends of the two groups of telescopic cylinders 53. Then, as the telescopic cylinders 53 operate, the sealing plate 54 and the sealing block 55 move simultaneously towards the side close to the pipes. When the two groups of pipes are butted, the telescopic cylinders 53 still operate, and the sealing plate 54 and the sealing block 55 are respectively inserted into the corresponding areas of the pipes, realizing the sealing inside the pipes, which is convenient for subsequent input of argon gas inside the pipes to avoid oxidation inside the pipes during the welding process.

[0035] As shown in the attached Figure 5 and Figure 6As shown, it is a schematic structural diagram of the sealing block 55 in this embodiment. The sealing block 55 includes a pushing bottom plate 551, a sealing cushion plate 552, an air outlet column 553, and an air injection end 554. The pushing bottom plate 551 is installed at the output end of the telescopic cylinder 53. The sealing cushion plate 552 is fixedly installed on the side of the pushing bottom plate 551, and the sealing cushion plate 552 is slidably inserted into the pipeline. The air outlet column 553 is installed on the side of the pushing bottom plate 551. The air injection end 554 is installed on the other group of the pushing bottom plate 551. The air outlet column 553 is internally connected to the air injection end 554. Two groups of air outlet holes are arranged on the outer surface of the air outlet column 553.

[0036] During use, as the position of the pushing bottom plate 551 moves, the sealing cushion plate 552 will be inserted into the pipeline to seal and block one end of the pipeline. Then, the pipeline for transporting argon is connected to the air inlet of the air injection end 554. By the operation of the pump body, argon is input into the air injection end 554. Through the conduction of the air outlet column 553, argon is directly discharged from the two groups of air outlet holes. By setting the initial positions of the two groups of air outlet holes, the discharged argon flows in a vortex manner, blows against the inner wall of the pipeline, fills the inner wall of the pipeline with argon, and effectively prevents the problem of oxidation on the inner wall of the pipeline during the welding process.

[0037] By attachment Figure 7 As shown, it is a schematic structural diagram of the sealing plate 54 in this embodiment. The sealing plate 54 includes a moving side plate 541, a fitting block 542, an exhaust pipe 543, and a sealing plug 544. The moving side plate 541 is installed at the output end of the telescopic cylinder 53. The fitting block 542 is installed on the side of the moving side plate 541. The exhaust pipe 543 is installed on the other side of the moving side plate 541. The sealing plug 544 is installed on the side of the exhaust pipe 543. A pressure relief hole for discharging gas is jointly opened in the exhaust pipe 543 and the moving side plate 541.

[0038] During use, as the output end of the telescopic cylinder 53 moves, the moving side plate 541 will push one end of the pipeline to move, reducing the distance between the two pipelines to be welded until the two pipelines to be welded are spliced. At this time, as the output end of the telescopic cylinder 53 continues to move, the fitting block 542 will be inserted into the inner wall of the corresponding pipeline to close and block one end of the pipeline, and through the cooperation of the exhaust pipe 543 itself, the air pressure inside and outside the pipeline is balanced, assisting the pipeline to be welded stably.

[0039] By attachment Figure 4As shown, the positioning mechanism 5 further includes a moving guide rail 56 and a sliding plate 57. The moving guide rail 56 is symmetrically installed on both sides of the guiding bracket 51. The sliding plate 57 is slidably installed on the upper surface of the moving guide rail 56, and two sets of sliding plates 57 are provided in total. The sliding plate 57 is connected to the sealing plate 54 and the sealing block 55. Scale grooves are equidistantly formed on the surface of one set of the moving guide rails 56, and a marking block is installed on the side of the sliding plate 57 sliding on the surface of this set of moving guide rails 56.

[0040] During use, the operation of the telescopic cylinder 53 will drive the sealing block 55 and the sealing plate 54 to move. When the sealing block 55 and the sealing plate 54 are moving, the sliding plate 57 will follow the sealing plate 54 and the sealing block 55 to move on the upper surface of the moving guide rail 56, ensuring that the sealing plate 54 and the sealing block 55 are in a horizontal moving state during movement. With the setting of the scale grooves and the marking block, the staff can quickly judge the moving distance and spacing of the sealing plate 54 and the sealing block 55 by observing the numbers on the surface of the scale groove corresponding to the marking block, which is convenient for extrusion and butt joint according to pipes of different lengths and helps the overall stable operation of the equipment.

[0041] As shown by the appendix Figure 8 As shown, it is a schematic structural diagram of the cleaning mechanism 6 in this embodiment. The pipe welding machine further includes a cleaning mechanism 6. The cleaning mechanism 6 includes a fixed side ring 61, a cleaning steel brush 62, a fixed screw 63 and a fixed screw groove 64. The fixed side rings 61 are symmetrically arranged on both sides of the connecting housing 1 and the upper rotating ring 2, and four sets of fixed side rings 61 are provided in total. The cleaning steel brush 62 is installed on the inner wall of the fixed side ring 61, and the cleaning steel brush 62 is used to clean the outer wall of the sliding pipe. Fixed screw grooves 64 are symmetrically formed inside the fixed side ring 61, and the fixed screw 63 is threadedly installed in the fixed screw groove 64, and the fixed screw 63 passes through and is threadedly connected to the side walls of the connecting housing 1 and the upper rotating ring 2.

[0042] During use, after the pipe welding is completed, the operation of the two telescopic cylinders 53 is used to push the pipe on the surface of the guiding bracket 51 to move, and the output ends of the two telescopic cylinders 53 extend and contract alternately, so that the pipe reciprocates on the surface of the cleaning steel brush 62. At this time, the cleaning steel brush 62 can stably polish the marks generated on the outer surface of the pipe during welding, removing the protrusions and impurities at the pipe joint after pipe welding, saving the subsequent repeated polishing process and accelerating the overall working efficiency.

[0043] As shown by the appendix Figure 8 and Figure 9As shown, the upper rotating ring 2 is rotatably installed on the top of the connecting shell 1, and a clamping seat 8 is symmetrically fixedly installed on the side of the upper rotating ring 2. A clamping member 9 for clamping the clamping seat 8 is installed on the side of the connecting shell 1 at the bottom end of the clamping seat 8. The clamping member 9 consists of a rotating frame, a toggle handle and a clamping ring. The rotating frame is symmetrically installed on the side of the connecting shell 1, and the toggle handle is rotatably installed on the outside of the rotating frame. The clamping ring is set at the top of the toggle handle, and the clamping ring is clamped with the clamping seat 8.

[0044] During use, after the pipe is placed in the target position, the upper rotating ring 2 is rotated so that the bottom surface of the upper rotating ring 2 fits into the surface of the connecting shell 1. At this time, by toggling the toggle handle, the toggle handle is rotated with the rotating frame as the axis, and the position of the locking ring installed on the top of the toggle handle changes until the overall height of the locking ring exceeds the locking seat 8. Then, the locking ring is pressed into the inside of the locking seat 8, and the toggle handle is pressed to complete the locking of the positions of the connecting shell 1 and the upper rotating ring 2.

[0045] By the attached Figure 9 As shown, the pipe welding machine also includes a mounting mechanism 7, which includes a mounting bracket 71, a mounting groove 72, an extrusion top plate 73, an extrusion screw 74 and a rotating bracket 75. The mounting bracket 71 is mounted on the side of the lower shell 4, and a mounting groove 72 is provided inside the mounting bracket 71. The extrusion top plate 73 is slidably mounted in the mounting groove 72. The extrusion screw 74 is rotatably mounted on the top of the extrusion top plate 73, and the extrusion screw 74 is threadedly connected to the side wall of the mounting bracket 71. The rotating bracket 75 is fixedly mounted on the end of the extrusion screw 74, and rotating handles are installed on both sides of the rotating bracket 75.

[0046] During use, move the entire device to the edge of the table, snap the mounting bracket 71 into the edge of the table, and then rotate the rotating bracket 75 to move the extrusion screw 74 along its own thread to adjust the distance between the extrusion top plate 73 and the table top. By squeezing the extrusion top plate 73 and the table top, the overall position of the device is fixed.

[0047] The above content is a further detailed description of the present invention in conjunction with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A pipe welding machine, comprising a connecting housing (1), an upper rotating ring (2), a welding machine main body (3) and a lower housing (4). The upper rotating ring (2) is rotatably installed at the top end of the connecting housing (1). The welding machine main body (3) for welding at the pipe weld is installed inside the connecting housing (1). The lower housing (4) is installed at the bottom end of the connecting housing (1), and it is characterized in that: Positioning mechanisms (5) for quickly positioning and splicing the pipes to be welded are installed on both sides of the connecting housing (1). The positioning mechanisms (5) include guiding brackets (51), mounting blocks (52), telescopic cylinders (53), sealing plates (54) and sealing blocks (55). The guiding brackets (51) are symmetrically installed on both sides of the connecting housing (1). The mounting blocks (52) are installed on the sides of the guiding brackets (51). The telescopic cylinders (53) are installed on the upper surfaces of the mounting blocks (52). There are two sets of telescopic cylinders (53) in total. The sealing plates (54) are installed at the output ends of one set of telescopic cylinders (53), and the sealing blocks (55) are installed at the output ends of the other set of telescopic cylinders (53).

2. The pipe welding machine according to claim 1, wherein: The sealing block (55) includes a pushing bottom plate (551), a sealing cushion plate (552), an air outlet column (553) and an air injection end (554). The pushing bottom plate (551) is installed at the output end of the telescopic cylinder (53). The sealing cushion plate (552) is fixedly installed on the side of the pushing bottom plate (551), and the sealing cushion plate (552) is slidably inserted into the pipe. The air outlet column (553) is installed on the side of the pushing bottom plate (551). The air injection end (554) is installed on the other side of the pushing bottom plate (551), and the air outlet column (553) is internally connected to the air injection end (554).

3. The pipe welding machine according to claim 2, wherein: Two sets of air outlet holes are arranged on the outer surface of the air outlet column (553), and the air outlet holes are arranged on the side surface of the air outlet column (553).

4. The pipe welding machine according to claim 1, wherein: The sealing plate (54) includes a moving side plate (541), a fitting block (542), an exhaust pipe (543) and a sealing plug (544). The moving side plate (541) is installed at the output end of the telescopic cylinder (53). The fitting block (542) is installed on the side of the moving side plate (541). The exhaust pipe (543) is installed on the other side of the moving side plate (541). The sealing plug (544) is installed on the side of the exhaust pipe (543). A pressure relief hole for discharging gas is jointly opened in the exhaust pipe (543) and the moving side plate (541).

5. The pipe welding machine according to claim 1, wherein: The positioning mechanism (5) further includes moving guide rails (56) and sliding plates (57). The moving guide rails (56) are symmetrically installed on both sides of the guiding brackets (51). The sliding plates (57) are slidably installed on the upper surfaces of the moving guide rails (56). There are two sets of sliding plates (57) in total. The sliding plates (57) are connected to the sealing plates (54) and the sealing blocks (55). Scale grooves are equidistantly opened on the surface of one set of moving guide rails (56), and a marking block is installed on the side of the sliding plate (57) sliding on the surface of this set of moving guide rails (56).

6. The pipe welding machine according to claim 5, characterized in that: The pipeline welding machine also includes a cleaning mechanism (6), the cleaning mechanism (6) including a fixed side ring (61), a cleaning steel brush (62), a fixed screw (63) and a fixed screw groove (64), the fixed side ring (61) is symmetrically arranged on both sides of the connecting shell (1) and the upper rotating ring (2), and a total of four groups of fixed side rings (61) are provided, the cleaning steel brush (62) is installed on the inner wall of the fixed side ring (61), and the cleaning steel brush (62) cleans the outer wall of the sliding pipeline, the fixed side ring (61) is symmetrically provided with a fixed screw groove (64), the fixed screw (63) is threadedly installed in the fixed screw groove (64), and the fixed screw (63) passes through the fixed screw (63) and is threadedly connected to the side wall of the connecting shell (1) and the upper rotating ring (2).

7. The pipe welding machine according to claim 1, wherein: The upper rotating ring (2) is rotatably mounted on the top of the connecting shell (1); a clamping seat (8) is symmetrically fixedly mounted on the side of the upper rotating ring (2); and a clamping piece (9) for clamping the clamping seat (8) is mounted on the side of the connecting shell (1) at the bottom of the clamping seat (8).

8. The pipe welding machine according to claim 7, characterized in that: The clamping member (9) is composed of a rotating frame, a toggle handle and a clamping ring. The rotating frame is symmetrically mounted on the side of the connecting shell (1). The toggle handle is rotatably mounted on the outside of the rotating frame. The clamping ring is arranged on the top of the toggle handle. The clamping ring is engaged with the clamping seat (8).

9. The pipe welding machine according to claim 1, characterized in that: The pipe welding machine further includes a mounting mechanism (7), the mounting mechanism (7) including a mounting bracket (71), a mounting groove (72), an extrusion top plate (73) and an extrusion screw (74), the mounting bracket (71) being mounted on the side of the lower shell (4), the mounting bracket (71) having a mounting groove (72) formed therein, the extrusion top plate (73) being slidably mounted in the mounting groove (72), the extrusion screw (74) being rotatably mounted on the top of the extrusion top plate (73), and the extrusion screw (74) being threadedly connected to the side wall of the mounting bracket (71).

10. The pipe welding machine according to claim 9, characterized in that: The mounting mechanism (7) further comprises a rotating bracket (75), wherein the rotating bracket (75) is fixedly mounted on the end of the extrusion screw (74), and rotating handles are mounted on both sides of the rotating bracket (75).

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