A welding production process for a tube heating device

Abstract

The present invention discloses a welding production process for a pipe body heating device, which relates to the technical field of welding. The specific steps are as follows: Step 1: Grinding; perform a grinding and cleaning operation on the outer wall of the straight cylindrical pipe body to remove oil stains and oxide films. Step 2: Welding; weld the heating pipe on the outer wall of the pipe body through welding equipment. Step 3: Cleaning; perform a cleaning and grinding operation on the outer wall of the pipe body. By setting a welding mechanism in the present invention, the pipe body is placed on the top of the base, the rotating block is rotated, and multiple positioning plates rotate synchronously and contact the pipe body, positioning the pipe body on the top of the base; the first motor operates to drive the welding head to move up and down; the second motor operates to drive the rotating ring to rotate, and the rotation of the rotating ring drives the welding head to perform a circumferential displacement operation; while the welding head rotates, it moves in the vertical direction, so that the welding head moves along a spiral trajectory, facilitating the welding of the heating pipe on the pipe body.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly to a welding production process for a pipe body heating device. Background Art

[0002] A heating pipe is spirally wound and welded to the outer wall of a pipe body to form a structure capable of realizing the uniform heating function for the material inside the pipe. This structure is applicable to pipeline liquid heating, a steam generator (the pipe body can be replaced with a bottom-closed tank body), or an energy-saving heating operation mechanism. When welding the heating pipe to the outer wall of the pipe body, since there is no special fixture for fixation, it is necessary to manually hold the pipe body and the heating pipe, so as to position the heating pipe on the outer wall of the pipe body, and then perform brazing welding operations. However, during the actual operation process, once relative displacement occurs between the pipe body and the heating pipe, it is likely to affect the welding quality of the heating pipe. In order to achieve the purpose of conveniently spirally winding and welding the heating pipe on the outer wall of the pipe body, a welding production process for a pipe body heating device is provided. Summary of the Invention

[0003] The purpose of the present invention is: to provide a welding production process for a pipe body heating device in order to achieve the purpose of conveniently spirally winding and welding the heating pipe on the outer wall of the pipe body.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A welding production process for a pipe body heating device, and the specific steps are as follows:

[0005] Step 1: Grinding; perform grinding and cleaning operations on the outer wall of the straight cylindrical pipe body to remove oil stains and oxide films.

[0006] Step 2: Welding; weld the heating pipe spirally on the outer wall of the pipe body through welding equipment.

[0007] Step 3: Cleaning; perform cleaning and grinding operations on the outer wall of the pipe body.

[0008] The welding equipment includes a base. A welding wire is arranged at the connection position of the pipe body and the heating pipe. The pipe body is placed on the top of the base. The welding operation between the pipe body and the heating pipe is carried out through a welding mechanism. The heating pipe and the welding wire are positioned on the outer wall of the pipe body through a support mechanism.

[0009] As a further solution of the present invention: The welding mechanism includes a positioning plate, the positioning plate is rotatably connected to the top end of the base, a first bevel gear is fixedly connected to the bottom end of the positioning plate, a toothed disc is rotatably connected to the outer wall of the first bevel gear inside the base, a second bevel gear is rotatably connected to the bottom end of the toothed disc inside the base, a rotating block is fixedly connected to one end of the second bevel gear, the rotating block is rotatably connected to the outer wall of the base, a fixing groove is formed on the outer wall of the rotating block, a fixing seat is fixedly connected to the outer wall of the base above the rotating block, a fixing block extending out of the fixing seat is slidably connected inside the fixing seat, and a first spring is connected between the fixing block and the fixing seat.

[0010] As a further solution of the present invention: The welding mechanism further includes a support seat, the support seat is fixedly connected to the top end of the base and is located at one end of the pipe body, a movable block is slidably connected to the inner wall of the support seat, a first motor is installed at the top end of the support seat, an output end of the first motor is connected to a first lead screw penetrating through the movable block, a movable frame is fixedly connected to one end of the movable block, a rotating ring is rotatably connected to the inner wall of the movable frame, a second motor is installed on the outer wall of the movable frame, an output end of the second motor is connected to a first spur gear, the first spur gear is in contact with the rotating ring, a third motor is installed at the top end of the rotating ring, an output end of the third motor is connected to a second threaded rod, two sliders are symmetrically and slidably connected inside the rotating ring, the second threaded rod penetrates through the sliders, a connecting rod is rotatably connected to one end of each slider, an installation seat is rotatably connected to one end of the connecting rod, and a welding head is installed on the outer wall of the installation seat.

[0011] As a further solution of the present invention: The support mechanism includes a vertical plate, the vertical plate is fixedly connected to the top end of the base and is located on both sides of the pipe body, a cross bar penetrating through the vertical plate is slidably connected to the outer wall of the vertical plate, a plug rod is fixedly connected to the top end of the cross bar, a second spring is connected between the plug rod and the vertical plate, a slot for inserting the plug rod is formed on the outer wall of the vertical plate, a clamping block extending out of the plug rod is slidably connected inside the plug rod, a third spring is connected between the bottom end of the clamping block and the plug rod, a pressing rod extending out of the plug rod is slidably connected to one side of the clamping block inside the plug rod, a positioning frame extending out of the cross bar is slidably connected inside the cross bar, a third threaded rod penetrating through the positioning frame is rotatably connected inside the cross bar, and a rotating column is fixedly connected to one end of the third threaded rod.

[0012] As a further solution of the present invention: A first tooth groove is formed at the top end of the toothed disc, a second tooth groove is formed at the bottom end of the toothed disc, the first tooth groove is meshed with the first bevel gear, and the second tooth groove is meshed with the second bevel gear.

[0013] As a further solution of the present invention: the inner wall of the fixed groove fits with the outer wall of the bottom of the fixed block, and the fixed block is in an L shape.

[0014] As a further solution of the present invention: the inner wall of the support seat fits with the outer wall of the movable block, a first threaded hole is provided on the outer wall of the movable block, and the first threaded hole matches the first lead screw.

[0015] As a further solution of the present invention: the cross-section of the rotating ring is convex, the cross-section of the movable frame is concave, the outer wall of the rotating ring and the inner wall of the movable frame are rotationally fitted by a concave-convex structure, a gear is provided on the outer wall of the rotating ring, the gear meshes with the first spur gear, a second threaded hole is provided on the outer wall of the slider, external threads are symmetrically provided on the outer wall of the second threaded rod, and the external threads match the second threaded hole.

[0016] As a further solution of the present invention: the inner wall of the slot fits with the outer wall of the plug rod, ratchet teeth are provided at the top of the inner wall of the slot, the top of the clamping block is engaged with the ratchet teeth, a slope is provided on one side of the clamping block, the extrusion rod contacts the slope, and a hemispherical surface is provided at one end of the extrusion rod extending out of the plug rod.

[0017] As a further solution of the present invention: the positioning frame is in a horizontally placed U-shaped structure and a third threaded hole is provided on its outer wall, and the third threaded hole matches the third threaded rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. By providing a welding mechanism, the pipe body is placed on the top of the base, the rotating block is rotated, and multiple positioning plates rotate synchronously to contact the pipe body, positioning the pipe body on the top of the base; the first motor operates to drive the welding head to move up and down; the second motor operates to drive the rotating ring to rotate, and the rotation of the rotating ring drives the welding head to perform a circumferential displacement operation; the welding head rotates and moves vertically at the same time, so that the welding head moves in a spiral trajectory, facilitating the welding of the heating pipe on the pipe body.

[0020] 2. By setting up a support mechanism, the crossbar is pushed to displace. The displacement of the crossbar contacts the heating tube and presses the heating tube against the outer wall of the pipe body. At this time, the insertion rod is inserted into the slot, squeezing the second spring. The clamping block is engaged with the inner wall of the slot under the elastic force of the third spring, thereby positioning the position of the crossbar. After repeating many times, multiple crossbars position the heating tube on the outer wall of the pipe body. Then, two welding wires are respectively placed at the positions where the top and bottom of the heating tube are connected to the pipe body. After completion, the rotating column is rotated. The rotation of the rotating column drives the third threaded rod to rotate. The rotation of the third threaded rod drives the positioning frame to displace. The displacement of the positioning frame presses the welding wire against the outer wall of the pipe body, facilitating the positioning of the heating tube and the welding wire on the outer wall of the pipe body. This design can replace manual positioning operations for the heating tube and the welding wire. In addition, the support mechanism can gradually and timely release the positioning operation as the movable frame moves downward, thereby preventing the crossbar from blocking the downward movement of the movable frame and affecting the welding operation. The operation process is more reliable, safe, and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural view of the present invention;

[0022] Figure 2 is a schematic installation view of the support base of the present invention;

[0023] Figure 3 is a schematic internal structural view of the base of the present invention;

[0024] Figure 4 is a schematic internal structural view of the fixed seat of the present invention;

[0025] Figure 5 is a schematic internal structural view of the movable frame and the rotating ring of the present invention;

[0026] Figure 6 is a schematic installation view of the mounting seat of the present invention;

[0027] Figure 7 is a schematic installation view of the vertical plate of the present invention;

[0028] Figure 8 is a schematic internal structural view of the vertical plate of the present invention;

[0029] Figure 9 is a schematic internal structural view of the crossbar and the insertion rod of the present invention.

[0030] In the figure: 1, base; 2, tube body; 3, heating tube; 4, welding mechanism; 401, positioning plate; 402, first bevel gear; 403, toothed disc; 404, second bevel gear; 405, rotating block; 406, fixing groove; 407, fixing seat; 408, fixing block; 409, first spring; 410, supporting seat; 411, movable block; 412, first motor; 413, first lead screw; 414, movable frame; 415, rotating ring; 416, first spur gear; 417, second motor; 418, third motor; 419, second threaded rod; 420, slider; 421, connecting rod; 422, mounting seat; 423, welding head; 5, supporting mechanism; 501, vertical plate; 502, cross bar; 503, inserting rod; 504, second spring; 505, inserting slot; 506, clamping block; 507, third spring; 508, extrusion rod; 509, positioning frame; 510, third threaded rod; 511, rotating column; 6, welding wire. Detailed implementation mode

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The following will illustrate the embodiments according to the overall structure of the present invention.

[0033] Please refer to Figures 1 to 9 , in the embodiment of the present invention, a welding production process of a tube body heating device specifically comprises the following steps:

[0034] Step 1: Grinding; perform grinding and cleaning operations on the outer wall of the straight tube body 2 to remove oil stains and oxide films.

[0035] Step 2: Welding; use welding equipment to helically weld the heating tube 3 to the outer wall of the tube body 2.

[0036] Step 3: Cleaning; perform cleaning and grinding operations on the outer wall of the tube body 2.

[0037] The welding equipment includes a base 1. A welding wire 6 is arranged at the connection position of the tube body 2 and the heating tube 3. The tube body 2 is placed on the top of the base 1. The welding operation between the tube body 2 and the heating tube 3 is carried out through a welding mechanism 4. The heating tube 3 and the welding wire 6 are positioned on the outer wall of the tube body 2 through a support mechanism 5.

[0038] The welding mechanism 4 includes a positioning plate 401. The positioning plate 401 is rotatably connected to the top of the base 1. A first bevel gear 402 is fixedly connected to the bottom end of the positioning plate 401. A toothed disc 403 is rotatably connected to the outer wall of the first bevel gear 402 inside the base 1. A second bevel gear 404 is rotatably connected to the bottom end of the toothed disc 403 inside the base 1. One end of the second bevel gear 404 is fixedly connected to a rotating block 405. The rotating block 405 is rotatably connected to the outer wall of the base 1. A fixing groove 406 is formed on the outer wall of the rotating block 405. A fixing seat 407 is fixedly connected to the outer wall of the base 1 above the rotating block 405. A fixing block 408 extending out of the fixing seat 407 is slidably connected to the inside of the fixing seat 407. A first spring 409 is connected between the fixing block 408 and the fixing seat 407.

[0039] The welding mechanism 4 further includes a support seat 410. The support seat 410 is fixedly connected to the top of the base 1 and is located at one end of the tube body 2. A movable block 411 is slidably connected to the inner wall of the support seat 410. A first motor 412 is installed at the top of the support seat 410. The output end of the first motor 412 is connected to a first lead screw 413 passing through the movable block 411. One end of the movable block 411 is fixedly connected to a movable frame 414. A rotating ring 415 is rotatably connected to the inner wall of the movable frame 414. A second motor 417 is installed on the outer wall of the movable frame 414. The output end of the second motor 417 is connected to a first spur gear 416. The first spur gear 416 is in contact with the rotating ring 415. A third motor 418 is installed at the top of the rotating ring 415. The output end of the third motor 418 is connected to a second threaded rod 419. The rotating ring 415 is symmetrically and slidably connected with sliders 420 inside. The second threaded rod 419 passes through the sliders 420. One end of the slider 420 is rotatably connected to a connecting rod 421. One end of the connecting rod 421 is rotatably connected to a mounting seat 422. A welding head 423 is installed on the outer wall of the mounting seat 422.

[0040] In this embodiment: When welding the pipe body 2 and the heating pipe 3, place the pipe body 2 on the top of the base 1. At this time, push the fixed block 408 to displace out of the fixed slot 406, squeeze the first spring 409, cancel the fixation of the rotating block 405, rotate the rotating block 405, the rotation of the rotating block 405 drives the second bevel gear 404 to rotate, the rotation of the second bevel gear 404 drives the toothed disc 403 to rotate, the rotation of the toothed disc 403 drives the first bevel gear 402 to rotate, the rotation of the first bevel gear 402 drives the positioning plate 401 to rotate, and multiple positioning plates 401 rotate synchronously to contact the pipe body 2, positioning the pipe body 2 on the top of the base 1. Then release the fixed block 408, and the fixed block 408 is engaged into the fixed slot 406 under the elastic force of the first spring 409 to fix the rotating block 405. This design facilitates positioning the pipe body 2 on the top of the base 1.

[0041] When welding, start the third motor 418. The operation of the third motor 418 drives the second threaded rod 419 to rotate. The rotation of the second threaded rod 419 drives the two sliders 420 to move in opposite directions. The displacement of the sliders 420 drives the mounting seat 422 to displace through the connecting rod 421, and the displacement of the mounting seat 422 drives the welding head 423 to displace, so that the welding head 423 displaces to contact the connection position of the pipe body 2 and the heating pipe 3. Start the first motor 412. The operation of the first motor 412 drives the first lead screw 413 to rotate. The rotation of the first lead screw 413 drives the movable block 411 to slide on the support seat 410. The displacement of the movable block 411 drives the movable frame 414 to displace up and down. The up and down displacement of the movable frame 414 drives the welding head 423 to displace up and down through the rotating ring 415. While starting the first motor 412, start the second motor 417. The operation of the second motor 417 drives the first spur gear 416 to rotate. The rotation of the first spur gear 416 drives the rotating ring 415 to rotate, and the rotation of the rotating ring 415 drives the welding head 423 to perform a circumferential displacement operation. The welding head 423 rotates and moves vertically at the same time, so that the welding head 423 moves in a spiral trajectory, which is convenient for welding the heating pipe 3 on the pipe body 2.

[0042] Please refer to Figures 7 to 9, the supporting mechanism 5 includes a vertical plate 501, the vertical plate 501 is fixedly connected to the top of the base 1 and is located on both sides of the pipe body 2. A cross bar 502 passing through the vertical plate 501 is slidably connected to the outer wall of the vertical plate 501. A plug rod 503 is fixedly connected to the top of the cross bar 502. A second spring 504 is connected between the plug rod 503 and the vertical plate 501. A slot 505 for the plug rod 503 to insert is formed on the outer wall of the vertical plate 501. A clamping block 506 extending out of the plug rod 503 is slidably connected inside the plug rod 503. A third spring 507 is connected between the bottom end of the clamping block 506 and the plug rod 503. A pressing rod 508 extending out of the plug rod 503 is slidably connected to one side of the clamping block 506 inside the plug rod 503. A positioning frame 509 extending out of the cross bar 502 is slidably connected inside the cross bar 502. A third threaded rod 510 passing through the positioning frame 509 is rotatably connected inside the cross bar 502. One end of the third threaded rod 510 is fixedly connected to a rotating column 511.

[0043] In this embodiment: Before welding the pipe body 2 and the heating pipe 3, the heating pipe 3 is sleeved on the outer wall of the pipe body 2. After completion, the cross bar 502 is pushed to displace. The displacement of the cross bar 502 contacts the heating pipe 3, and the heating pipe 3 is pressed tightly against the outer wall of the pipe body 2. At this time, the plug rod 503 is inserted into the slot 505, squeezing the second spring 504. The clamping block 506 is engaged with the inner wall of the slot 505 under the elastic force of the third spring 507, thereby positioning the position of the cross bar 502. After repeating multiple times, multiple cross bars 502 position the heating pipe 3 on the outer wall of the pipe body 2. Then, two welding wires 6 are respectively placed at the positions where the top and bottom of the heating pipe 3 are connected to the pipe body 2. After completion, the rotating column 511 is rotated. The rotation of the rotating column 511 drives the third threaded rod 510 to rotate. The rotation of the third threaded rod 510 drives the positioning frame 509 to displace, and the displacement of the positioning frame 509 presses the welding wire 6 tightly against the outer wall of the pipe body 2.

[0044] During welding, the welding head 423 contacts the welding wire 6 to perform welding operation between the pipe body 2 and the heating pipe 3. During this process, the movable frame 414 gradually moves downward. The displacement of the movable frame 414 reaches the end of the plug rod 503 in contact with the pressing rod 508, pushing the pressing rod 508 to displace. The displacement of the pressing rod 508 pushes the clamping block 506 to move, canceling the connection and fixation between the plug rod 503 and the slot 505. At this time, the cross bar 502 and the plug rod 503 are displaced and reset under the elastic force of the second spring 504. This design can prevent the cross bar 502 from blocking the downward movement of the movable frame 414, which may affect the welding operation, and is convenient for positioning the heating pipe 3 and the welding wire 6 on the outer wall of the pipe body 2.

[0045] Please refer to Figures 2 to 3, a first tooth groove is formed at the top end of the gear disk 403, and a second tooth groove is formed at the bottom end of the gear disk 403. The first tooth groove meshes with the first bevel gear 402, and the second tooth groove meshes with the second bevel gear 404.

[0046] In this embodiment: Rotate the rotating block 405. The rotation of the rotating block 405 drives the second bevel gear 404 to rotate. The rotation of the second bevel gear 404 drives the gear disk 403 to rotate. The rotation of the gear disk 403 drives the first bevel gear 402 to rotate. The rotation of the first bevel gear 402 drives the positioning plate 401 to rotate.

[0047] Please refer specifically to Figures 3 to 4 , the inner wall of the fixing groove 406 fits with the bottom outer wall of the fixing block 408, and the shape of the fixing block 408 is L-shaped.

[0048] In this embodiment: Under the elastic force of the first spring 409, the fixing block 408 is engaged into the fixing groove 406 to fix the rotating block 405.

[0049] Please refer specifically to Figures 5 to 6 , the inner wall of the support seat 410 fits with the outer wall of the movable block 411. A first threaded hole is formed in the outer wall of the movable block 411, and the first threaded hole matches the first lead screw 413.

[0050] In this embodiment: The first motor 412 operates to drive the first lead screw 413 to rotate. The rotation of the first lead screw 413 drives the movable block 411 to slide in the support seat 410. The displacement of the movable block 411 drives the movable frame 414 to move up and down.

[0051] Please refer specifically to Figures 5 to 6 , the cross-section of the rotating ring 415 is convex-shaped, the cross-section of the movable frame 414 is concave-shaped, the outer wall of the rotating ring 415 and the inner wall of the movable frame 414 are rotationally fitted by the concave-convex structure. Teeth are provided on the outer wall of the rotating ring 415, and the teeth mesh with the first spur gear 416. A second threaded hole is formed in the outer wall of the slider 420, and external threads are symmetrically provided on the outer wall of the second threaded rod 419, and the external threads match the second threaded hole.

[0052] In this embodiment: The third motor 418 operates to drive the second threaded rod 419 to rotate. The rotation of the second threaded rod 419 drives the two sliders 420 to move in opposite directions. The displacement of the sliders 420 drives the mounting seat 422 to move through the connecting rod 421. The displacement of the mounting seat 422 drives the welding head 423 to move; The second motor 417 operates to drive the first spur gear 416 to rotate. The rotation of the first spur gear 416 drives the rotating ring 415 to rotate. The rotation of the rotating ring 415 drives the welding head 423 to perform a circumferential displacement operation.

[0053] Please refer specifically toFigures 7 to 9 The inner wall of the slot 505 is in contact with the outer wall of the insertion rod 503. The top of the inner wall of the slot 505 is provided with ratchet teeth, the top of the latch 506 is engaged with the ratchet teeth, a slope is provided on one side of the latch 506, the extrusion rod 508 is in contact with the slope, and a hemispherical surface is provided at one end of the extrusion rod 508 extending out of the insertion rod 503.

[0054] In this embodiment: Push the cross bar 502 to displace. The displacement of the cross bar 502 contacts the heating tube 3 and presses the heating tube 3 against the outer wall of the tube body 2. At this time, the insertion rod 503 is inserted into the slot 505, squeezing the second spring 504. The latch 506 is engaged with the inner wall of the slot 505 under the elastic force of the third spring 507, so as to position the cross bar 502.

[0055] Please refer specifically to Figures 7 to 9 The positioning frame 509 has a horizontally arranged U-shaped structure and its outer wall is provided with a third threaded hole, and the third threaded hole matches the third threaded rod 510.

[0056] In this embodiment: Rotate the rotating column 511. The rotation of the rotating column 511 drives the third threaded rod 510 to rotate. The rotation of the third threaded rod 510 drives the positioning frame 509 to displace, and the displacement of the positioning frame 509 presses the welding wire 6 against the outer wall of the tube body 2.

[0057] The above-mentioned is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A welding production process for a tube body heating device, characterized in that, The specific steps are as follows: Step 1: Grinding; perform grinding and cleaning operations on the outer wall of the straight tube body (2) to remove oil stains and oxide films; Step 2: Welding; helically weld the heating tube (3) on the outer wall of the tube body (2) through a welding device; Step 3: Cleaning; perform cleaning and grinding operations on the outer wall of the tube body (2); The welding device includes a base (1). A welding wire (6) is arranged at the connection position of the tube body (2) and the heating tube (3). The tube body (2) is placed on the top of the base (1). The welding operation between the tube body (2) and the heating tube (3) is carried out through a welding mechanism (4). The heating tube (3) and the welding wire (6) are positioned on the outer wall of the tube body (2) through a support mechanism (5); The support mechanism (5) includes a vertical plate (501). The vertical plate (501) is fixedly connected to the top of the base (1) and is located on both sides of the tube body (2). A cross bar (502) penetrating through the vertical plate (501) is slidably connected to the outer wall of the vertical plate (501). A plug rod (503) is fixedly connected to the top of the cross bar (502). A second spring (504) is connected between the plug rod (503) and the vertical plate (501). A slot (505) for the plug rod (503) to insert is opened on the outer wall of the vertical plate (501). A clamping block (506) extending out of the plug rod (503) is slidably connected to the inside of the plug rod (503). A third spring (507) is connected between the bottom end of the clamping block (506) and the plug rod (503). An extrusion rod (508) extending out of the plug rod (503) is slidably connected to the inside of the plug rod (503) on one side of the clamping block (506). A positioning frame (509) extending out of the cross bar (502) is slidably connected to the inside of the cross bar (502). A third threaded rod (510) penetrating through the positioning frame (509) is rotatably connected to the inside of the cross bar (502). One end of the third threaded rod (510) is fixedly connected to a rotating column (511).

2. The welding production process of a pipe body heating device according to claim 1, characterized in that, The welding mechanism (4) includes a positioning plate (401). The positioning plate (401) is rotatably connected to the top end of the base (1). A first bevel gear (402) is fixedly connected to the bottom end of the positioning plate (401). A toothed disc (403) is rotatably connected to the outer wall of the first bevel gear (402) inside the base (1). A second bevel gear (404) is rotatably connected to the bottom end of the toothed disc (403) inside the base (1). A rotating block (405) is fixedly connected to one end of the second bevel gear (404). The rotating block (405) is rotatably connected to the outer wall of the base (1). A fixing groove (406) is formed in the outer wall of the rotating block (405). A fixing seat (407) is fixedly connected to the outer wall of the base (1) above the rotating block (405). A fixing block (408) extending out of the fixing seat (407) is slidably connected inside the fixing seat (407). A first spring (409) is connected between the fixing block (408) and the fixing seat (407).

3. The welding production process of a pipe body heating device according to claim 2, characterized in that, The welding mechanism (4) further includes a support seat (410). The support seat (410) is fixedly connected to the top end of the base (1) and is located at one end of the pipe body (2). A movable block (411) is slidably connected to the inner wall of the support seat (410). A first motor (412) is installed at the top end of the support seat (410). The output end of the first motor (412) is connected to a first lead screw (413) passing through the movable block (411). A movable frame (414) is fixedly connected to one end of the movable block (411). A rotating ring (415) is rotatably connected to the inner wall of the movable frame (414). A second motor (417) is installed on the outer wall of the movable frame (414). The output end of the second motor (417) is connected to a first spur gear (416). The first spur gear (416) is in contact with the rotating ring (415). A third motor (418) is installed at the top end of the rotating ring (415). The output end of the third motor (418) is connected to a second threaded rod (419). The rotating ring (415) is symmetrically and slidably connected with sliders (420) inside. The second threaded rod (419) passes through the sliders (420). One end of the slider (420) is rotatably connected to a connecting rod (421). One end of the connecting rod (421) is rotatably connected to a mounting seat (422). A welding head (423) is installed on the outer wall of the mounting seat (422).

4. The welding production process of a pipe body heating device according to claim 3, characterized in that, A first tooth groove is formed at the top end of the toothed disc (403), and a second tooth groove is formed at the bottom end of the toothed disc (403). The first tooth groove meshes with the first bevel gear (402), and the second tooth groove meshes with the second bevel gear (404).

5. The welding production process of a pipe body heating device according to claim 3, characterized in that, The inner wall of the fixing groove (406) is in fit with the bottom outer wall of the fixing block (408). The fixing block (408) is in an L shape.

6. The welding production process of a pipe body heating device according to claim 3, characterized in that, The inner wall of the support base (410) is in contact with the outer wall of the movable block (411). A first threaded hole is provided on the outer wall of the movable block (411), and the first threaded hole is matched with the first lead screw (413).

7. The welding production process of a tube heating device according to claim 3, characterized in that, The cross-section of the rotating ring (415) is convex, and the cross-section of the movable frame (414) is concave. The outer wall of the rotating ring (415) is rotationally fitted with the inner wall of the movable frame (414) by means of a concave-convex structure. Teeth are provided on the outer wall of the rotating ring (415), and the teeth are meshed with the first spur gear (416). A second threaded hole is provided on the outer wall of the slider (420), and external threads are symmetrically provided on the outer wall of the second threaded rod (419), and the external threads are matched with the second threaded hole.

8. The welding production process of a pipe body heating device according to claim 1, characterized in that, The inner wall of the slot (505) is in contact with the outer wall of the plug rod (503). Ratchet teeth are provided at the top of the inner wall of the slot (505), and the top of the clamping block (506) is engaged with the ratchet teeth. A slope is provided on one side of the clamping block (506), and the extrusion rod (508) is in contact with the slope. A hemispherical surface is provided at one end of the extrusion rod (508) extending out of the plug rod (503).

9. The welding production process of a tube body heating device according to claim 1, characterized in that, The positioning frame (509) has a horizontally placed U-shaped structure and a third threaded hole is provided on its outer wall, and the third threaded hole is matched with the third threaded rod (510).

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