A pipe welding machine applied to intelligent manufacturing

Abstract

The application relates to the technical field of pipe welding machines, in particular to a pipe welding machine applied to intelligent manufacturing, which comprises a base and the like; a rectangular frame is arranged at the top of the base; a ring-shaped welding assembly is arranged at the right frame position of the rectangular frame; an extrusion constraint assembly is arranged at the left frame position of the rectangular frame; the extrusion constraint assembly continuously extrudes and constrains the plastic deformation stage of two pipelines in the initial cooling stage after butt welding; the weld surface is smooth and even; and thermal stress is eliminated. The arc-shaped pressing blocks which are arranged at the extrusion constraint assembly in a circumferential interval are radially folded by means of the inclined guide inclined surface in the plastic deformation stage of the weld in the initial cooling stage from 1200-1500 DEG C high temperature; uniform and continuous radial extrusion force is applied to the weld area; and the radial expansion or axial contraction of the molten pool due to the surface tension and internal pressure is effectively inhibited.

Description

Technical Field

[0001] This invention relates to the field of pipe welding machine technology, and in particular to a pipe welding machine applied to intelligent manufacturing. Background Technology

[0002] Pipe welding machines are mainly used to roll thin sheets into steel cylinders of the required diameter through mechanisms such as uncoiling, leveling, edge pressing, and three-roll rolling, and simultaneously weld and cut to length. During welding, the pipes need to be fixed first, and then the gaps between the pipes need to be welded.

[0003] Chinese Patent CN108098213B discloses a pipe welding machine with a lifting and adjusting device, including a U-shaped base. A U-shaped frame is welded to one side of the U-shaped base. A sliding rod and a threaded rod are provided between two horizontal plates of the U-shaped frame. A motor is bolted to the upper surface of the U-shaped frame, and the output shaft of the motor passes through one side of the U-shaped frame. A linear motor can drive the welding torch head to move on the sliding track for welding. A third electric telescopic rod can move the welding torch head, thereby adjusting the distance between the welding torch head and the pipe to be welded. A second electric telescopic rod can move a first fixed plate and a second fixed plate, which can fix the pipe to be welded. This pipe welding machine with a lifting and adjusting device has a simple structure and is easy to operate. It can not only adjust the welding height but also weld pipes of different sizes, providing convenience. However, in actual welding, the instantaneous temperature of the weld seam in existing equipment can reach 1200–1500℃. The high-temperature molten pool is prone to radial expansion or axial contraction due to surface tension and internal pressure. Existing pipe welding machines lack continuous constraint on the initial plastic deformation stage during cooling, resulting in weld seams that bulge outwards (weld beads) or concave inwards (collapse), leading to uneven surfaces, especially in thin-walled pipes where ellipticity deviations are prone to occur. Therefore, it is necessary to design a pipe welding machine for intelligent manufacturing to solve the above-mentioned technical problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a pipe welding machine for intelligent manufacturing.

[0005] A pipe welding machine for intelligent manufacturing includes a base, a rectangular frame, an annular welding assembly, an extrusion constraint assembly, and a gradient insulation assembly. The rectangular frame is located on the top of the base. The annular welding assembly is located on the right frame of the rectangular frame, and the extrusion constraint assembly is located on the left frame of the rectangular frame. The extrusion constraint assembly continuously extrudes and constrains the plastic deformation stage of the two pipes during the initial cooling after welding, resulting in a smooth and flat weld surface and eliminating thermal stress. A gradient insulation assembly is located at the rotation center of the annular welding assembly, which can insulate the weld area of ​​the two pipes, implement temperature rise compensation, and slowly reduce the current input to provide gradient insulation for the weld area.

[0006] Furthermore, the annular welding assembly includes an annular frame, a rotating ring, a gear ring, an annular mounting bracket, an electric slide rail, a welding head, a first rotary motor, and a first gear. The annular frame is located on the right side of the rectangular frame, and the rotating ring is rotatably mounted on the annular frame. A gear ring is located on the right side of the rotating ring, and an annular mounting bracket is located on the left side of the rotating ring. An electric slide rail is vertically mounted eccentrically on the left side wall of the annular mounting bracket. A welding head is mounted on the slider of the electric slide rail, and the axis of the welding wire extension end of the welding head coincides with the geometric center axis of the annular mounting bracket. A first rotary motor is mounted on the right side of the rectangular frame, and the output shaft of the first rotary motor passes through the right side of the rectangular frame and mounts a first gear, which meshes with the gear ring.

[0007] Furthermore, the extrusion constraint assembly includes a first annular plate, an arc-shaped sleeve, a straight slide rail, a sliding block, an electric push rod, and an arc-shaped pressure block. The first annular plate is located on the left frame of the rectangular frame. Arc-shaped sleeves are spaced circumferentially on the right side wall of the first annular plate. The right side of the arc-shaped sleeves is inclined. The arc-shaped sleeves together form a cylindrical structure with a gradually tapering cone shape at the right end. Straight slide rails are inclinedly arranged on the arc-shaped sleeves. Sliding blocks are slidably arranged on the straight slide rails. Electric push rods are arranged on the straight slide rails. The push rod of the electric push rod is connected to the sliding block. Arc-shaped pressure blocks are arranged on the sliding blocks for continuous extrusion constraint during the plastic deformation stage of the initial cooling after welding of the two pipes. The left side wall of the arc-shaped pressure block has an inclined surface that matches the inclined surface on the right side of the arc-shaped sleeve.

[0008] Furthermore, the gradient insulation component includes a second annular plate, a cylindrical sleeve, a straight slider, an insulation sleeve, a rotating shaft, a second gear, a servo motor, a rack, and an induction heating coil. The second annular plate is arranged in the inner ring of the annular frame, and the cylindrical sleeve is installed on the second annular plate. Straight sliders are spaced apart on the inner wall of the cylindrical sleeve, and straight grooves are spaced apart on the outer wall of the insulation sleeve. The insulation sleeve is slidably installed with the straight sliders of the cylindrical sleeve through the straight grooves. A rotating shaft is rotatably arranged on the lower left side of the cylindrical sleeve, and a second gear is arranged on the rotating shaft. A servo motor is arranged on the lower left side of the cylindrical sleeve, and the output shaft of the servo motor is connected to the rotating shaft through a coupling. A rack is embedded in the lower outer wall of the insulation sleeve, and the rack meshes with the second gear. An induction heating coil is arranged inside the insulation sleeve.

[0009] Furthermore, it also includes an adsorption component. The arc-shaped sleeve is equipped with an adsorption component for extracting the fumes generated during welding. The adsorption component includes an air suction pipe, a bearing seat, a lead screw, a nut, a second rotary motor, and a connector. The arc-shaped sleeve has a slotted hole, and the air suction pipe is slidably installed inside the arc-shaped sleeve. The outer wall of the arc-shaped sleeve is equipped with a bearing seat, and the lead screw is installed on the bearing seat. A nut is screwed onto the lead screw, and the lower part of the nut is connected to the air suction pipe through the slotted hole via a connecting block. The second rotary motor is installed on the left side of the outer wall of the arc-shaped sleeve, and the output shaft of the second rotary motor is connected to the lead screw via a coupling. The left side wall of the air suction pipe is equipped with a connector, and the connector is connected to an external air suction pump via a pipe.

[0010] Furthermore, it also includes a protective shell and a door. The protective shell is installed on the base, and the door is rotatably installed on the front side wall of the protective shell.

[0011] Furthermore, the working surface of the arc-shaped pressure block that is in contact with the pipe is coated with a tungsten carbide wear-resistant and high-temperature resistant coating.

[0012] Furthermore, the outer wall of the insulation jacket is wrapped with a high-temperature resistant aluminum silicate insulation cotton layer, and the outside of the insulation cotton layer is covered with a stainless steel protective plate.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The circumferentially spaced arc-shaped pressure blocks in the extrusion constraint assembly apply uniform and continuous radial extrusion force to the weld area during the initial plastic deformation stage of the weld when it cools from a high temperature of 1200-1500℃. This is achieved by radially converging the inclined guide slope, effectively suppressing the radial expansion or axial contraction of the molten pool caused by surface tension and internal pressure. This fundamentally avoids geometric defects such as bulging weld beads, concave collapse, and out-of-tolerance ellipticity, ensuring that the weld surface is smooth and flat and that the dimensional accuracy meets high-level standards.

[0014] 2. After the extrusion constraint is completed, the gradient insulation component is driven by a servo motor to precisely cover the weld area with the insulation sleeve, and the temperature is compensated by an induction heating coil. Then, the current input is slowly reduced according to the preset heat treatment specifications, so that the weld can achieve gradient slow cooling. This effectively avoids the adverse phase transformation caused by rapid cooling of carbon steel or high-strength steel, significantly reduces the hardening tendency and internal stress level, thereby greatly improving the weld's resistance to stress corrosion cracking and its crack resistance during post-processing such as bending and flaring. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0017] Figure 3 This is an exploded structural diagram of the annular welding assembly of the present invention.

[0018] Figure 4 This is a three-dimensional structural diagram of the extrusion constraint component of the present invention.

[0019] Figure 5 This is a partial three-dimensional structural schematic diagram of the extrusion constraint component of the present invention.

[0020] Figure 6 This is a schematic diagram of the installation structure of the gradient thermal insulation component of the present invention.

[0021] Figure 7 This is a three-dimensional structural diagram of the gradient thermal insulation component of the present invention.

[0022] Figure 8 This is a schematic diagram of the first partial structure of the gradient thermal insulation component of the present invention.

[0023] Figure 9 This is a schematic diagram of a second partial structure of the gradient thermal insulation component of the present invention.

[0024] Figure 10 This is a schematic diagram of the installation structure of the adsorption component of the present invention.

[0025] Figure 11 This is a three-dimensional structural diagram of the adsorption component of the present invention.

[0026] The components in the diagram are labeled as follows: 1-base, 2-rectangular frame, 3-ring welding assembly, 31-ring frame, 32-rotating ring, 33-gear ring, 34-ring mounting bracket, 35-electric slide rail, 36-welding head, 37-first rotary motor, 38-first gear, 4-compression constraint assembly, 41-first ring plate, 42-arc sleeve, 43-straight slide rail, 44-sliding block, 45-electric push rod, 46-arc pressure block, 5-gradient retaining wall. Temperature control component, 51-Second annular plate, 52-Cylindrical sleeve, 53-Straight slider, 54-Insulation sleeve, 55-Straight groove, 56-Rotating shaft, 57-Second gear, 58-Servo motor, 59-Rack, 510-Induction heating coil, 6-Adsorption component, 61-Slot hole, 62-Suction pipe, 63-Bearing seat, 64-Lead screw, 65-Nut, 66-Second rotary motor, 67-Connector, 7-Protective shell, 8-Box door. Detailed Implementation

[0027] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0028] Example: Figures 1-11As shown, a pipe welding machine applied to intelligent manufacturing includes a base 1, a rectangular frame 2, an annular welding assembly 3, an extrusion constraint assembly 4, and a gradient insulation assembly 5. The base 1 is equipped with braked swivel casters at its bottom. Lifting support feet are threaded onto the four corners of the base 1, with anti-slip pads at the lower ends of the lifting support feet (the lifting support feet are existing technology and not shown in the figure). The swivel casters are used for transporting the entire machine. After the lifting support feet are on the ground, the casters are raised to achieve fixed positioning of the equipment. The rectangular frame 2 is bolted to the upper end of the base 1. An annular welding assembly 3 is located on the right side of the rectangular frame 2, used for all-position rotary welding of the butt joint of two steel pipes. The annular welding assembly 3 includes an annular frame 31, a rotating ring 32, a gear ring 33, an annular mounting frame 34, an electric slide rail 35, a welding head 36, a first rotary motor 37, and a first gear. A ring frame 31 is provided on the right side of the rectangular frame 2. The inner ring of the ring frame 31 is supported by a rotating ring 32 via a bearing. A gear ring 33 is provided on the right side of the rotating ring 32. A ring mounting frame 34 is provided on the left side of the rotating ring 32. An electric slide rail 35 is vertically provided at an eccentric position on the left side wall of the ring mounting frame 34. A welding head 36 is provided on the slider of the electric slide rail 35. The axis of the welding wire extension end of the welding head 36 coincides with the geometric center axis of the ring mounting frame 34. A first rotary motor 37 is provided on the right side of the rectangular frame 2. The output shaft of the first rotary motor 37 passes through the right side of the rectangular frame 2 and is equipped with a first gear 38. The first gear 38 meshes with the gear ring 33. When the first rotary motor 37 is started, it drives the rotating ring 32 and the ring mounting frame 34 to rotate at a uniform speed, thereby driving the welding head 36 to make a full circumference along the circumferential seam.

[0029] like Figure 2 and Figure 4 As shown, a compression constraint assembly 4 is provided on the left side frame of the rectangular frame 2. The compression constraint assembly 4 includes a first annular plate 41, an arc-shaped sleeve 42, a straight slide rail 43, a sliding block 44, an electric push rod 45, and an arc-shaped pressure block 46. The first annular plate 41 is provided on the left side frame of the rectangular frame 2. Arc-shaped sleeves 42 are arranged circumferentially on the right side wall of the first annular plate 41. The right side of the arc-shaped sleeves 42 is inclined. A circle of arc-shaped sleeves 42 together form a cylindrical structure with a gradually tapering cone shape and an opening at the right end. Each of the curved sleeves 42 is equipped with a straight slide rail 43 at an incline. A sliding block 44 is slidably mounted on the straight slide rail 43. An electric push rod 45 is mounted on the straight slide rail 43, and the push rod of the electric push rod 45 is connected to the sliding block 44. An arc-shaped pressure block 46 is mounted on the sliding block 44 to continuously compress and constrain the plastic deformation stage during the initial cooling period after the two pipes are butt-welded. The inner arc surface (fitting the working surface of the pipe) of the arc-shaped pressure block 46 is coated with a tungsten carbide wear-resistant and high-temperature resistant coating to withstand high-temperature compression without adhesion or rapid wear. The left side wall of the arc-shaped pressure block 46 has an inclined surface that matches the inclined surface on the right side of the curved sleeve 42.

[0030] like Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, a gradient insulation component 5 is provided at the rotation center of the annular welding assembly 3 to insulate the weld seam of the two pipes. This component compensates for the temperature rise in the weld area and then slowly reduces the current input of the induction heating coil according to a preset cooling curve, achieving gradient insulation of the weld area. The gradient insulation component 5 includes a second annular plate 51, a cylindrical sleeve 52, a straight slider 53, an insulation sleeve 54, a rotating shaft 56, a second gear 57, a servo motor 58, a rack 59, and an induction heating coil 510. The inner ring of the annular frame 31 is provided with the second annular plate 51, and the cylindrical sleeve 52 is mounted on the second annular plate 51. Straight sliders 53 are spaced apart on the inner wall of the cylindrical sleeve 52, and straight grooves 55 are spaced apart on the outer wall of the insulation sleeve 54. The insulation sleeve 54 is slidably installed via the straight slide groove 55 and the straight slide block 53 of the cylindrical sleeve 52. The outer wall of the insulation sleeve 54 is wrapped with a high-temperature resistant aluminum silicate insulation cotton layer. The outer side of the insulation cotton layer is covered with a stainless steel protective plate. The insulation cotton layer isolates the induction heating coil 510 from radiating heat outward, reducing heat loss and preventing operators from accidentally touching the high-temperature insulation sleeve and getting burned. A rotating shaft 56 is rotatably installed on the lower left side of the cylindrical sleeve 52. A second gear 57 is installed on the rotating shaft 56. A servo motor 58 is installed on the lower left side of the cylindrical sleeve 52. The output shaft of the servo motor 58 is connected to the rotating shaft 56 through a coupling. A rack 59 is embedded in the lower outer wall of the insulation sleeve 54. The rack 59 meshes with the second gear 57. An induction heating coil 510 is installed inside the insulation sleeve 54.

[0031] like Figure 2 , Figure 10 and Figure 11 As shown, it also includes an adsorption component 6. The arc-shaped sleeve 42 is equipped with an adsorption component 6 for extracting the fumes generated during welding. The adsorption component 6 includes an air suction pipe 62, a bearing seat 63, a lead screw 64, a nut 65, a second rotary motor 66, and a connector 67. The arc-shaped sleeve 42 has a slotted hole 61. The air suction pipe 62 is slidably installed inside the arc-shaped sleeve 42. A metal filter screen is detachably installed on the inner side of the air outlet end of the air suction pipe 62. The metal filter screen is used to intercept welding metal flying. Splashing particles are prevented from entering. The outer wall of the arc-shaped sleeve 42 is provided with a bearing seat 63. A lead screw 64 is provided on the bearing seat 63. A nut 65 is screwed onto the lead screw 64. The lower part of the nut 65 is connected to the suction pipe 62 through a connecting block and a slotted hole 61. A second rotary motor 66 is provided on the left side of the outer wall of the arc-shaped sleeve 42. The output shaft of the second rotary motor 66 is connected to the lead screw 64 through a coupling. A connector 67 is provided on the left side wall of the suction pipe 62. The connector 67 is connected to an external suction pump through a pipe.

[0032] like Figure 1As shown, it also includes a protective shell 7 and a door 8. The protective shell 7 is provided on the base 1, and the door 8 is rotatably provided on the front side wall of the protective shell 7.

[0033] When this device is needed, the two steel pipes to be welded are axially transported by the pipe feeder to the position between the annular welding assembly 3 and the extrusion constraint assembly 4, so that the end faces of the two pipes are in contact with each other and the weld axis is coincident with the central axis of the annular welding assembly 3, thus completing the pre-welding alignment. Then, the first rotary motor 37 is started, which drives the rotating ring 32 to rotate at a constant speed on the annular frame 31 through the meshing of the first gear 38 and the gear ring 33, and drives the annular mounting frame 34 to rotate synchronously. At the same time, the electric slide rail 35 is controlled to move the welding head 36 radially to the circumference position of the weld, and the preparation work is complete.

[0034] During welding, firstly, the electric push rods 45 in the compression constraint assembly 4 are synchronously shortened. These push rods pull the sliding block 44 along the inclined straight slide rail 43. The sliding block 44 drives the arc-shaped pressure block 46 to move in the inclined direction, causing all the arc-shaped pressure blocks 46 to completely detach from the weld circumference area. This provides sufficient operating space for the subsequent circumferential rotation welding of the welding head 36, ensuring that the welding action is not interfered with. Then, all the adsorption assemblies 6 are started synchronously, and each second rotary motor 66 drives the lead screw 64 to rotate forward. The nut 65 on the lead screw 64 is connected via... The block drives the suction pipe 62 to slide out along the inside of the arc-shaped sleeve 42, so that the pipe opening of each suction pipe 62 accurately reaches the source of the dust generation on the side of the weld. The external suction pump creates a continuous negative pressure in each suction pipe 62 through the connector 67 and the pipeline, and the dust is drawn away the moment it is generated, effectively suppressing the diffusion of metal oxide dust and toxic gases into the surrounding environment and ensuring clean air in the operating area. After all the adsorption components 6 are in place, the welding operation is started. As the rotating ring 32 rotates continuously, the welding head 36 performs full-circumferential continuous automatic welding on the circumferential seam of the two pipes, achieving one-time forming.

[0035] The welding head 36 rotates continuously in the circumferential direction for welding. When the welding head 36 rotates circumferentially to the fan-shaped area corresponding to a certain arc-shaped pressure block 46 and completes the welding of that area, the second rotary motor 66 in the adsorption component 6 corresponding to the arc-shaped pressure block 46 reverses and drives the lead screw 64 to rotate in the opposite direction. The nut 65 drives the suction pipe 62 to slide and retract back to its original position along the inside of the arc-shaped sleeve 42 through the connecting block. The external suction pump stops the negative pressure of this path simultaneously. After the suction pipe 62 is reset, the electric push rod 45 corresponding to that position immediately starts to extend. Its push rod pushes the sliding block 44 to slide along the straight slide rail 43. The sliding block 44 drives the arc-shaped pressure block 46 to move along the inclined trajectory. The arc-shaped pressure block 46 gradually fits into the inclined surface on the right side of the arc-shaped sleeve 42 with the help of the inclined surface opened on its left side wall. Under the guidance of the inclined surface, the arc-shaped pressure block 46 radially retracts inward, applying a uniform and continuous radial extrusion force to the weld seam in the area that is still in a high-temperature plastic state. As the welding head 36 advances circumferentially, each adsorption component 6 is reset in sequence, and each arc-shaped pressure block 46 is pressed in sequence, applying compression constraints to the weld section that has just been welded. This provides segmented and continuous physical constraints during the plastic deformation stage of the weld in the early stage of cooling from 1200-1500℃, effectively suppressing the radial expansion or axial contraction of the high-temperature molten pool caused by surface tension and internal pressure, preventing the formation of bulging weld beads or concave collapse in the weld area, ensuring that the entire weld surface is smooth and flat, and eliminating the problem of ellipticity deviation caused by thermal stress.

[0036] After all the arc-shaped pressure blocks 46 are pressed down and the welding head 36 completes the full circumference welding, each electric push rod 45 remains extended, and the arc-shaped pressure blocks 46 maintain the compression constraint on the weld. After the constraint is completed, each electric push rod 45 in the compression constraint assembly 4 shortens synchronously again, so that all the arc-shaped pressure blocks 46 completely detach from the weld circumference area again. Then, the gradual heat preservation assembly 5 starts in tandem, the servo motor 58 drives the rotating shaft 56 to rotate, and the second gear 57 on the rotating shaft 56 meshes with the rack 59 to transmit the rotational motion into linear motion. The heat preservation sleeve 54 slides laterally along the straight slide block 53 on the inner wall of the cylindrical sleeve 52 through the straight slide groove 55, and moves smoothly from the standby position to the weld area and completely detaches it. The cylindrical sleeve 52 is fixedly installed on the inner ring of the ring frame 31 via the second annular plate 51, ensuring the precise and stable movement path of the insulation sleeve 54. After the insulation sleeve 54 is in place, the induction heating coil 510 inside it is energized to compensate for the temperature rise of the weld area. Then, the current input is gradually reduced according to the preset program, so that the weld area achieves gradient slow cooling according to the cooling rate required by the material heat treatment specification. This avoids significant martensitic phase transformation or uneven microstructure caused by rapid cooling of carbon steel or high-strength steel, thereby eliminating high residual stress, preventing weld embrittlement and decreased impact toughness, ensuring no stress corrosion cracking during long-term use, and meeting the quality requirement of no weld cracking during pipe bending or flaring. After the weld temperature has cooled to a safe set value, the servo motor 58 reverses to drive the insulation sleeve 54 back to the standby position, and each mechanism resets in sequence, completing the complete welding and cooling cycle of a single pipe fitting.

[0037] Throughout the welding and cooling process, the protective shell 7 and the box door 8 on the base 1 remain closed, forming a closed working space that not only prevents smoke and dust from escaping but also prevents operators from being exposed to high temperatures and harmful environments at close range.

[0038] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A pipe welding machine applied to intelligent manufacturing, characterized in that, include: A rectangular frame (2) is provided on the top of the base (1); Annular welding assembly (3), the right frame position of the rectangular frame (2) is provided with the annular welding assembly (3); The extrusion constraint assembly (4) is provided on the left frame of the rectangular frame (2). The extrusion constraint assembly (4) applies continuous extrusion constraint to the plastic deformation stage of the two pipes in the early stage of cooling after welding. The gradual heat insulation component (5) and the annular welding component (3) are provided with a gradual heat insulation component (5) at the rotation center, which can insulate the weld seam of the two pipes.

2. A pipe welding machine for intelligent manufacturing according to claim 1, characterized in that, The annular welding assembly (3) includes: A ring frame (31) is provided on the right side frame of the rectangular frame (2). Rotating ring (32), a rotating ring (32) is rotatably provided on the ring frame (31); A gear ring (33) is provided on the right side of the rotating ring (32); A ring-shaped mounting bracket (34) is provided on the left side of the rotating ring (32); Electric slide rail (35), the electric slide rail (35) is vertically installed at the eccentric position on the left side wall of the ring mounting bracket (34); Welding head (36), the slider of electric slide rail (35) is provided with welding head (36), the axis of the welding wire protrusion end of welding head (36) coincides with the geometric center axis of annular mounting bracket (34); The first rotary motor (37) is installed on the right frame of the rectangular frame (2). The first gear (38) is installed on the right side frame of the rectangular frame (2) through the output shaft of the first rotary motor (37). The first gear (38) meshes with the gear ring (33).

3. A pipe welding machine for intelligent manufacturing according to claim 2, characterized in that, The compression constraint assembly (4) includes: The first annular plate (41) is provided on the left frame position of the rectangular frame (2). Arc-shaped sleeve (42), arc-shaped sleeve (42) is arranged circumferentially on the right side wall of the first annular plate (41). The right side of the arc-shaped sleeve (42) is inclined. The arc-shaped sleeve (42) together form a cylindrical structure with a gradually tapering cone shape at the right end. Straight slide rail (43) is inclinedly installed on both the straight slide rail (43) and the arc-shaped sleeve (42). Sliding block (44) is slidably provided on the straight slide rail (43). Electric push rod (45), electric push rod (45) is provided on straight slide rail (43), and the push rod of electric push rod (45) is connected to sliding block (44); The arc-shaped pressure block (46) and the sliding block (44) are provided with an arc-shaped pressure block (46) for continuously squeezing and constraining the plastic deformation stage in the early stage of cooling after welding of the two pipes. The left side wall of the arc-shaped pressure block (46) is provided with an inclined surface that matches the right inclined surface of the arc-shaped sleeve (42).

4. A pipe welding machine for intelligent manufacturing according to claim 3, characterized in that, The gradient insulation component (5) includes: The second annular plate (51) is provided in the inner ring of the annular frame (31); A cylindrical sleeve (52) is installed on the second annular plate (51); Straight slider (53), the inner wall of the cylindrical sleeve (52) is provided with straight sliders (53) at intervals; The insulation sleeve (54) has straight sliding grooves (55) spaced apart on the outer side wall. The insulation sleeve (54) is slidably installed with the straight sliding block (53) of the cylindrical sleeve (52) through the straight sliding grooves (55). A rotating shaft (56) is rotatably provided on the lower left side of the cylindrical sleeve (52). The second gear (57) is provided on the rotating shaft (56); Servo motor (58) is provided on the lower left side of cylindrical sleeve (52). The output shaft of servo motor (58) is connected to rotating shaft (56) through coupling. A rack (59) is embedded in the lower part of the outer wall of the insulation sleeve (54), and the rack (59) meshes with the second gear (57); An induction heating coil (510) is installed inside the insulation sleeve (54).

5. A pipe welding machine for intelligent manufacturing according to claim 4, characterized in that, It also includes an adsorption component (6), on which an adsorption component (6) is provided to extract the fumes generated during welding. The adsorption component (6) includes: The suction tube (62) has a slotted hole (61) on the arc-shaped sleeve (42), and the suction tube (62) is slidably installed inside the arc-shaped sleeve (42). Bearing housing (63), the outer side wall of the arc-shaped sleeve (42) is provided with bearing housing (63); A lead screw (64) is provided on a bearing housing (63). Nut (65), a nut (65) is screwed onto the lead screw (64), and the lower part of the nut (65) is connected to the suction pipe (62) through a connecting block through a slotted hole (61); The second rotary motor (66) is provided on the left side of the outer wall of the arc-shaped sleeve (42). The output shaft of the second rotary motor (66) is connected to the lead screw (64) through a coupling. Connector (67) is provided on the left side wall of the suction pipe (62). Connector (67) is connected to an external suction pump through a pipe.

6. A pipe welding machine for intelligent manufacturing according to claim 5, characterized in that it further... include: Protective shell (7), the base (1) is provided with protective shell (7); The front side wall of the protective shell (7) is equipped with a rotating door (8).

7. A pipe welding machine for intelligent manufacturing according to claim 6, characterized in that, The inner side of the arc-shaped pressure block (46) that is in contact with the working surface of the pipe is coated with a tungsten carbide wear-resistant and high-temperature resistant coating.

8. A pipe welding machine for intelligent manufacturing according to claim 7, characterized in that, The outer wall of the insulation jacket (54) is wrapped with a high-temperature resistant aluminum silicate insulation cotton layer, and the outer side of the insulation cotton layer is covered with a stainless steel protective plate.

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