77 results about "Tube forming" patented technology

This application relates to an automatic processing device for Bourdon tubes, comprising a base, a forming column fixed to the base, a bending mechanism for deforming a straight tube, and a cutting mechanism for cutting the straight tube. The forming column is further provided with a lifting mechanism for moving the Bourdon tube upwards. The lifting mechanism includes several lifting blocks slidably disposed on the outer wall of the forming column and a sliding rod coaxially passing through the forming column. The upper end of each lifting block abuts against the lower end of the Bourdon tube, and one end of each lifting block extends into the forming column and is fixed to the sliding rod. The upper end of the sliding rod is positioned above the upper surface of the forming column. After the bending mechanism shapes the Bourdon tube and the cutting mechanism separates the Bourdon tube from the straight tube, the lifting blocks apply force to the Bourdon tube, thereby moving it upwards to above the forming column, whereby the Bourdon tube can be directly grasped and unloaded.

The present application relates to copper pipe processing technical field, specifically to a kind of copper pipe red punch hot forging processing equipment, including feeding module, feeding module and processing module, the feeding module includes L-shaped mounting plate, with the top connection of the L-shaped mounting plate intermediate frequency furnace, with the top connection of the intermediate frequency furnace mechanical hand, install in the front side of the L-shaped mounting plate transverse plate, with the top connection of the transverse plate first U-shaped plate.The copper pipe heated in the intermediate frequency furnace in the present application is caught after being caught by the receiving plate, will be by cylinder cooperation limit board, copper pipe is continuously pressed into the material frame, then this period, the articulated plate in rotation makes T-shaped slide plate translation, then T-shaped slide plate moves with push rod, push rod is pressed into mould with the copper pipe in the material frame, under the action of pressure, copper pipe is formed in mould, copper pipe forming step is smooth, silky, the forming time of single copper pipe can be controlled in 30 seconds, effectively improve copper pipe processing efficiency.

This invention relates to the field of cable aluminum foil coil processing technology, and particularly to an integrated equipment and method for forming and coating cable aluminum foil coils based on a conical mold. The equipment includes a transport frame and coating wheels. A mold range adjustment mechanism is provided on the outer side of the transport frame, and a position adjustment mechanism is provided on the outer side of the conical mold range adjustment mechanism. The conical mold range adjustment mechanism includes a rotating column, a stabilizing plate fixedly connected to the top of the rotating column, and a conical mold piece on the top of the stabilizing plate. A fixing rod is fixedly connected inside the rotating column, and a movable tube is fixedly connected to the outer side of the fixing rod. In this invention, by adjusting the speed of a primary motor to change the range between the conical mold pieces, and in conjunction with the synergistic effect of the position adjustment mechanism, precise adjustment of the mold range and position can be quickly completed without the need for separate forming and coating processes, reducing equipment space requirements and process connection time.

This invention relates to the manufacturing process and equipment for U-shaped tubes used in nuclear power steam emitters, belonging to the field of U-shaped tube manufacturing technology. It addresses the challenges of existing U-shaped tube forming processes, requiring precision molding and ensuring corrosion resistance and high-temperature performance during use. The invention utilizes a U-shaped angle-fixed mold, allowing for the detachable shaping block assembly through the coordinated arrangement of the rotating frame, fixed clamp, and clamping adjustment components. The pressure forming mechanism and side support mechanism work together to allow for replacement of the side support mechanism by removing replaceable half-rings before U-shaped tube extrusion molding. During U-shaped tube extrusion molding, the tube support gradually changes its angle as the pressing assembly rises and falls. Simultaneously, the highly conforming tube support prevents deformation of both ends of the U-shaped tube. The tube body is made of heat-resistant steel with good corrosion resistance and high-temperature performance. This invention changes the U-shaped tube injection molding production process to a method where the tube is first manufactured and then mechanically bent.

The application provides a ceramic pipe forming die, which comprises a first die and a second die arranged symmetrically, the cross section of the first die and the second die in the radial direction is in a half ring shape, and the first die and the second die are folded to form a complete ring forming die; the first die and the second die each comprise a flange section, a straight section and a plug section arranged in sequence along the axial direction; wherein the straight section is an integral forming structure, the length of the straight section is not less than 2500 mm, and the pipe body structure of the straight section is provided with dense and uniformly distributed filter through holes. The ceramic pipe forming die in the application sets the straight section as an integral forming structure, and the filter through holes are dense and uniformly distributed, so that the ceramic pipe can be uniformly distributed and layered consistently in the whole length direction, the quality defects at the welding seam of the existing spliced die are avoided, the forming quality of the ceramic filter pipe is effectively improved, and the performance requirements of the industrial waste gas treatment are better met.

This invention discloses a tee branch pipe forming machine, relating to the field of metal pipe processing technology. It includes a machine body, with a mold base rotatably connected to the top of the machine body and a motor for driving the mold base to rotate. Around the mold base, the top of the machine body is sequentially arranged a hole-pulling mechanism, a flaring mechanism, and a flattening mechanism. It also includes a pipe fitting circumferential positioning mechanism, which includes a frame plate fixed to the machine body. The frame plate is equipped with a pushing unit and a calibration component. The calibration component includes a mounting seat fixed to the top of the frame plate, with a motor mounted on the top of the mounting seat. This invention automatically identifies the opening position of the metal pipe after it is fed and adjusts the angle until the opening of the metal pipe is precisely aligned with the contact point, eliminating the need for manual adjustment. This effectively avoids problems such as hole skew and uneven force caused by angle deviation, significantly improving the forming accuracy and product qualification rate of the tee branch pipe, while also enhancing the automation level and production continuity of the entire machine.

This invention provides a seamless paper tube forming device, belonging to the field of seamless paper tube technology. The device includes a base and a feeding rack. The feeding rack is fixedly installed on the surface of the base. A gluing mechanism is installed on the surface of the base, comprising a glue tank and a first scraper. The glue tank is installed on the base surface, and a gluing roller is rotatably mounted on the surface of the glue tank. The lower surface of the gluing roller is immersed in the glue in the glue tank. The first scraper is slidably installed inside the glue tank to scrape off the glue on the surface of the gluing roller. This invention, by setting up a gluing mechanism, allows the gluing roller to rotate and apply glue to the paper surface. The first scraper removes the glue from the surface of the gluing roller, preventing excessive glue adhesion that could cause an unsightly paper tube and increasing the drying time, thus helping to ensure the quality of subsequent paper tube forming.

The utility model provides a kind of full plastic drip-proof self-suction ration straw injection molding mould, belong to mould technical field.It includes upper die plate and lower die plate, the upper die plate and lower die plate between being provided with matrix type straw forming mechanism, the upper die plate upside is provided with multipoint injection molding plate, the multipoint injection molding plate bottom is provided with several injection tubes, the multipoint injection molding plate and upper die plate between still being provided with injection tube fixing structure, the matrix type straw forming mechanism includes several straw forming subassembly of rectangular matrix distribution. Through the cooperation of matrix type straw forming mechanism and multipoint injection molding plate, the synchronous forming of multiple straws can be realized, the inside and outside synchronous cooling design of circumferential type outer cooling structure and inner cooling structure solves the problem of low cooling efficiency of traditional mould single side, shortens glue liquid solidification time, improves production efficiency;Injection tube fixing structure ensures that injection tube is positioned accurately, avoids injection deviation to affect straw forming precision.

The present application relates to the technical field of tunnel pipe forming, in particular to a device for tunnel pipe forming and a calibration method thereof. The device comprises a supporting mechanism, a former body and a lubricating mechanism. The former body is detachably installed at the top end of the supporting mechanism and has a hollow cylindrical structure. A plurality of lubricating mechanisms are detachably installed on the former body, with one end of each lubricating mechanism protruding from the inner wall of the cylindrical structure of the former body. The cylindrical structure of the former body is used to accommodate and form a workpiece. During the forming process of the workpiece, the end of the lubricating mechanism protruding from the inner wall of the cylindrical structure of the former body is in sliding cooperation with the outer wall of the workpiece in the cylindrical structure of the former body. The present application can greatly reduce the wear of the inner wall of the former body by the workpiece, reduce the friction between the workpiece and the inner wall of the former body, improve the production efficiency and reduce the driving cost.

The application discloses a thin-wall pipe forming die and method, and relates to the technical field of aero-engines. The die comprises an upper die, a lower die and a support. The support and the lower die can move relative to each other to meet different disassembly and assembly requirements. The forming method adopts the process of whole-plate blanking, edge rolling butt welding, segmented and step-by-step stamping, pressure maintaining and shaping and end cutting. The application solves the problems of conventional split splicing welding process, such as many welds, large deformation, poor structural strength and low processing efficiency. The application adopts the mode of segmented stamping forming after whole-plate edge rolling welding, cancels multi-segment split welding, guarantees the integrity of the integrated structure of the gas film plate thin-wall pipe, improves the overall strength, pressure resistance and fatigue resistance of the component, simultaneously simplifies the processing procedure, reduces the production cost, and improves the processing efficiency and the product yield.

We provide improved molds for forming equipment for polymer products. [Solution] A mold or mold insert is introduced into or installed in a molding apparatus for forming polymer products such as tubes. The mold includes an outer and an inner component. The outer component defines a first inner cavity having a first diameter, and the inner component is positioned at least partially inside the inner cavity of the outer component. The inner component has an inner surface that defines a second inner cavity having a second diameter smaller than the first diameter. In certain examples, the inner component is a single, integrated piece. In some examples, the inner component includes first and second subcomponents, which, when joined together, define a second inner cavity through which polymer material passes during the forming of the polymer product.

The utility model discloses a kind of brittle cylinder ice cream processing brittle cylinder forming equipment, it is related to brittle cylinder ice cream processing technical field, its technical key points include brittle cylinder forming processing machine body;Perimeter feeding processing mechanism, the perimeter feeding processing mechanism is installed and is connected in the upper end inner side of brittle cylinder forming processing machine body;Rotary contact mechanism, the rotary contact mechanism is installed and is connected in the upper end inner side of brittle cylinder forming processing machine body;Material filling mechanism, the material filling mechanism is installed and fixed on the upper end outer side of brittle cylinder forming processing machine body;Leakage collection mechanism, the leakage collection mechanism is installed and is connected on the lower end outer side of material filling mechanism, technical effect is that material filling mechanism can be heated into shape with material delivery to brittle cylinder forming processing machine body, leakage collection mechanism is located below after each filling, so material dropping of material filling mechanism can be effectively received, such effective protection platform environment, and centralized collection, facilitate centralized processing.

This utility model discloses a flattened tube forming fixture, including a vertical extrusion die, which is a split structure and is longitudinally mounted on the Turkish fixture; a horizontal extrusion die, which is a split structure and is laterally mounted on the Turkish fixture, with the tube placed between the vertical and horizontal extrusion dies; and an adjustment mechanism that can adjust the vertical extrusion die longitudinally or the horizontal extrusion die laterally to extrude the tube. This utility model's flattened tube forming fixture has a simple structure. It uses split, irregularly shaped, rounding dies for extrusion forming to ensure the dimensions of the flattened tube, offering good versatility. After rounding, the tube meets the drawing requirements, resulting in a high product qualification rate.

This invention relates to the field of water quality testing technology, specifically to a laboratory water quality testing and treatment device. It includes an upper tank with a first inner tube at its upper part for adding water to be tested, and a first and second mounting ports at its bottom edge for installing test tubes. The second mounting port sways at the edge of the upper tank. A lower tank has a second inner tube forming a double-layer structure with it. A filtration mechanism includes a motor located on the upper tank, with an integrated shaft on the motor's output shaft located inside the first inner tube and extending into the second inner tube. The purpose of this invention is to provide a laboratory water quality testing and treatment device that improves filtration efficiency and water quality testing results through multiple filtrations using filter plates and filter cylinders. Simultaneously, it prevents spillage or splashing of the water to be tested during the filtration process, thus avoiding waste and maintaining the cleanliness of the laboratory.

This invention belongs to the field of fiber tube forming technology, and discloses a ceramic fiber filter tube vacuum forming device and forming method. The ceramic fiber filter tube vacuum forming device includes a forming component, a tube removal component, and a material distribution component. The forming component includes a support drive component, a roller, a vacuum filtration component, and a forming roller. Two rollers are spaced apart, and the support drive component can drive the rollers to rotate. The vacuum filtration component is connected to the forming roller, and the forming roller has several filtration holes. The forming roller is located above the two rollers, and the two rollers and the forming roller are triangularly distributed. The diameter of the forming roller is adjustable. The tube removal component includes a tube removal drive component, which is connected to the forming roller and can drive the forming roller to move along its axial direction. The material distribution component is configured to rotate the forming roller and distribute slurry onto the forming roller. The forming method uses the above-mentioned ceramic fiber filter tube vacuum forming device to improve the surface quality and strength of the filter tube, while also improving production efficiency.

The present invention relates to a method for manufacturing a ball chain, and more specifically, to a method for manufacturing a ball chain for jewelry having a cutting pattern formed thereon, wherein a plate is formed into a tubular shape and then formed into a ball shape using a ball forming die, a cutting pattern is processed on the outer surface using a cutting pattern forming machine operated by numerical control, and the balls are processed to be individually separated using a separate cutting machine. To this end, the present invention comprises: a wire supply step for supplying a wire; a plate feeding and tube forming step for feeding a plate into the outside of the supplied wire and forming the plate into a tube shape; a ball forming step for forming the plate formed into a tube shape into a ball shape using a ball forming die, but forming it in a connected state without being completely separated; a cutting pattern forming step for automatically forming a cutting pattern by numerical control using a cutting pattern forming machine on the outside of the formed ball; a cutting separation step for cutting the connecting part of the ball with the formed cutting pattern to completely separate it into multiple parts; a link chain connecting step for connecting a link chain to the end of the wire on which multiple balls are fitted; a ball link chain side transfer step for moving the balls fitted on the wire to the link chain side; and a recovery step for separating the link chain from the wire and recovering it when the balls are transferred to the link chain side.

The application discloses a high-dynamic load roller suitable for steel pipe forming and belongs to the technical field of steel pipe forming. The high-dynamic load roller comprises a supporting base, the inner side of the supporting base is alternately provided with first rollers and second rollers, further comprises a protection assembly arranged on the first rollers, the protection assembly is used for improving the anti-abrasion performance of the first rollers, a cleaning mechanism arranged at the front end of the supporting base, the cleaning mechanism is arranged between the first rollers and the second rollers at the front end, and the cleaning mechanism and the roller shaft of the first rollers are driven through a belt pulley mechanism and a bevel gear set. The high-dynamic load roller suitable for steel pipe forming can change the density of the roller according to the weight of the conveyed pipeline, thereby adaptively adjusting the bearing strength of the roller when conveying the pipeline, can clean the impurities on the pipeline when conveying the pipeline, and can reduce the abrasion of the roller caused by the pipeline.

This invention relates to the field of liquid cooling plate devices, and more particularly to a liquid cooling plate with a high-efficiency heat dissipation structure. The plate includes a liquid cooling plate body and a cooling flow tube forming a cooling medium channel within it, arranged in a meandering, bow-shaped structure. The straight section of the cooling flow tube is equipped with an adaptive turbulence structure that dynamically turbulents the coolant. High-temperature and low-temperature zones are formed in the middle and on both sides of the cooling flow tube, respectively. The adaptive turbulence structure includes bimetallic strips equidistantly arranged vertically along the straight section of the cooling flow tube, with one end of each bimetallic strip fixedly connected to the cooling flow tube. This invention can automatically change the flow channel morphology and turbulence intensity according to the component's heat dissipation temperature, achieving a dynamic balance between low-temperature, low-resistance, energy-saving, and high-temperature, high-turbulence, high-efficiency operation. Simultaneously, it precisely matches the heat dissipation of the high-temperature zone, prevents flow channel blockage, and enhances heat exchange uniformity, truly achieving dynamic adaptive turbulence adjustment. This effectively solves the problem of the inability to simultaneously balance heat dissipation and energy consumption in a fixed turbulence structure.

A measuring device (26) for measuring the spring force setting of a spring (24) in a pressing assembly (21) of a tube forming and sealing device (9) is described. The measuring device has a force gauge (27) for measuring the spring force, particularly a tension gauge (27), and is provided with a pin (29) configured to contact the spring (24) in use; an adapter element (28) including a load device (38) configured to control the movement of the pin (29) and gradually increase the force applied to the spring (24) by the pin (29) in use; and a clamping element (30), preferably having a generally C-shape, which can be coupled to a support structure arranged in a fixed position relative to the spring (24) in use.

This invention belongs to the field of steel pipe manufacturing technology, specifically relating to a method for manufacturing high-frequency straight seam welded pipes for dense-phase / supercritical CO2 transportation and the high-frequency straight seam welded pipes prepared using this method. It aims to solve the problem of the lack of stable and safe CO2 transportation pipelines suitable for long-distance, high-capacity dense-phase / supercritical CO2 transportation in existing technologies. The invention includes: pipe rolling, using an FFX rolling mill to roll milled steel strips into pipe blanks; high-frequency welding, performing high-frequency welding on the weld points of the pipe blanks using a double-electrode elastic floating contact welding process; and heat treatment. This invention can overcome the low-temperature crack initiation and crack arrest toughness defects in the application of high-frequency welded pipes for dense-phase / supercritical CO2 transportation.

The application discloses a titanium alloy ribbed pipe forming method in the technical field of metal processing, and comprises the following steps: S1, forming a blank pipe with a preset outer diameter and a preset wall thickness tolerance through machining; S2, preparing a ribbed pipe rib line forming pipe blank by rolling the processed blank pipe for multiple times; S3, preforming rolling of the ribbed pipe by using a pierger roller; S4, performing fine forming treatment on the ribbed pipe by using an improved pierger rolling mill; and S5, performing the procedures of degreasing-pickling-annealing-water pressure-surface inspection-marking and packaging on the ribbed pipe after the fine forming treatment, and completing the finished ribbed pipe. Through blank pipe size precision control, rolling regulation and control of the ribbed pipe rolling pipe blank size tolerance by coupling the deformation amount and the Q value, intermediate annealing process regulation and control of pipe material organization and performance, and multi-step ribbed pipe cold rolling forming, the filling effect of the pipe material and the rib line is improved, and the dual goals of ribbed pipe size precision control and surface quality improvement are realized.

The utility model relates to the technical field of the clip applier tube forming, specifically relates to a kind of forming tool for clip applier tube, it include: upper pressure subassembly, including top plate, first upper plate being fixed on top plate, second upper plate being installed on the first upper plate by first installation module, upper pressure block being fixed on top plate, the first drive module of driving top plate lifting, second upper plate can be attached and away from the first upper plate, the end of upper pressure block away from top plate is the upper pressure head with forming concave-convex surface being equipped, the lower end surface of second upper plate is equipped with the first positioning slot that the outer wall of clip applier tube is in accord with;Lower pressure subassembly, including fixedly arranged bottom plate, lower pressure block being fixed on bottom plate, first lower plate being installed on the bottom plate by second installation module, second lower plate being fixed on the first lower plate, first lower plate can be attached and away from bottom plate;A kind of forming tool for clip applier tube in the utility model realizes one-time forming, shortens the forming time of clip applier tube, and forming structure is stable.

A parison tube former utilizes a radial compression heater to heat a very specific portion of a preform tube for stretching. The heater has a plurality of compression dies that form a central cavity for receiving the preform tube. The working surfaces of the compression dies close down onto the outer surface of the preform tube to heat the tube via conduction, which more accurately and precisely heats the preform tube. A first stretched portion of the preform tube is produced by stretching the preform tube after heating. A second portion of the preform tube is then located within the central cavity and is also heated by the radial compression heater and stretched to produce a second stretched portion of the preform tube and an unexpanded portion of the preform tube, or balloon portion of the parison tube.

The utility model discloses a dust collector pipe forming die convenient to material, belongs to forming die technical field, include: workstation, be provided with lower mould and a plurality of oil cylinders on it, be provided with a plurality of first recess on the lower mould, the oil cylinder sliding connection is in the workstation, be provided with a plurality of forming rods on the oil cylinder, and the upper die is provided with the male die table at the bottom, be provided with a plurality of second recess on the male die table, the first recess, the second recess with the forming rod between the enclosure formation forming groove, be provided with pouring hole on the upper die. The utility model when dust collector pipe needs material, both sides oil cylinder drive both sides forming rod to realize material simultaneously after moving, and this structure greatly reduces the friction of unilateral material, reduces the material resistance, also avoided because dust collector pipe too big, in the material process, lead to the dust collector pipe to appear deformation and scratch problem, improve production quality.

The utility model relates to steel pipe forming technical field discloses a kind of arc pressure guiding roll-pressing devices for steel pipe forming, including device main body, the device main body top is fixedly connected with support frame, the support frame inside rotationally connected with rotating lever, the support frame outer wall is provided with conveying assembly, the device main body top is provided with arc pressure subassembly, conveying assembly includes lower roller and the upper roller being set in the lower roller top, the lower roller inside is fixedly connected in the rotating lever outer wall, the upper roller both ends are fixedly connected with connecting block. In the utility model, under the drive of motor one lower roller rotation makes steel pipe move forward, during steel pipe extrusion upper roller, drive connecting block and moving block extrude moving rod and spring one upwards, spring one is stabilized clamped to steel pipe by virtue of elasticity, solve the problem that traditional rigid clamping cannot adapt to pipe diameter change and lead to steel pipe surface damage, clamping instability, improve the versatility of device and stability in steel pipe conveying process.

This utility model relates to the field of drying equipment, and more particularly to a device for forming and drying catalytic ceramic tubes, including a supporting mechanism; moving mechanisms are arranged on both sides of the supporting mechanism, and a heating mechanism is arranged at the upper end of the supporting mechanism. This utility model, through the supporting mechanism and modular design, can increase production speed and improve production efficiency. The moving and heating mechanisms enable multi-zone heating, avoiding damage caused by excessively rapid heating. It solves the problems of existing closed-loop drying devices that require waiting for the temperature to reach a certain level before use, and then needing to cool down before the next use, leading to excessively rapid heating and damage to the catalytic ceramic tubes during drying, unstable positioning, excessive manual intervention, uneven drying, and poor specification adaptability.

This invention provides a high-performance titanium alloy tube forming process and system, relating to the field of titanium alloy tube plastic processing technology. The process includes degreasing, cleaning, and surface pretreatment of the titanium alloy tube blank, and determining the diameter reduction and / or wall reduction for each drawing pass based on the target finished product size. Before each drawing pass, a prefabricated tubular removable self-supporting body is inserted into the inner cavity of the section to be drawn. This prefabricated tubular removable self-supporting body is composed of an inorganic particle skeleton and a deactivated bonding phase, and before insertion, it has a self-supporting form that allows it to be individually removed and maintain its tubular contour. This high-performance titanium alloy tube forming process and system solves the problem that existing multi-pass warm drawing processes for titanium alloy tubes struggle to simultaneously ensure stable inner cavity support during the drawing stage and rapid removal and subsequent cleaning after drawing.

The utility model relates to round tube forming machine technical field, concretely is a kind of round tube blanking device, including blanking frame, the buffer plate of inclination installation on the blanking frame, the L-shaped fixed plate of being fixed on the buffer plate, the adjusting plate of being set to the L-shaped fixed plate transverse part, V-shaped blanking groove is rotationally connected in the buffer plate one side in one end, the blanking drive mechanism for driving the V-shaped blanking groove is adopted to drive V-shaped blanking groove upside-down, the V-shaped blanking groove is set to the side of L-shaped fixed plate vertical part opposite, the buffer site is formed between the L-shaped fixed plate, adjusting plate and V-shaped blanking groove, when V-shaped blanking groove is driven by blanking drive mechanism and is turned upside down, round tube in V-shaped blanking groove is rolled into buffer site under the action of gravity, the lowest end of buffer plate is towards the vertical part of L-shaped fixed plate setting;The utility model can arrange round tube neatly, so that subsequent mechanical hand is grabbed, it is more convenient to use.

A sintering furnace (1) for sintering dental workpieces (2), wherein the sintering furnace (1) has a heating element (3) with a receiving space (4) for receiving the workpiece (2) during sintering. The receiving space (4) is a portion of an interior space (5) within the heating element (3), and the heating element (3) comprises or consists of silicon carbide, wherein the heating element (3) is designed, at least in parts, as a slotted tube, and the slot (6) in the tube forming the heating element (3) has a helical configuration in a heating region (7), in which the heating element (3) encloses the receiving space (4).

The application relates to the technical field of welding forming, and discloses a steel pipe forming device and a forming method thereof, the steel pipe forming device comprises a positioning pipe, further comprises: a driving part arranged in the inside of the positioning pipe, a mounting frame is arranged on the driving part, a control device is fixedly connected to the mounting frame, a welding gun is arranged on the control device, and the driving part is used for driving the welding gun to move along the inside of the positioning pipe; an adjusting part is arranged between the control device and the driving part and is used for adjusting the relative angle between the welding gun and the positioning pipe; a shaping part is symmetrically arranged on the outer side wall of the positioning pipe, and a connecting piece is arranged on the positioning part; the application can detect the actual shape of the steel pipe and the angle of the edges and corners when the steel pipe is fixed, and the moving track and the moving speed of the welding gun can be adjusted in real time according to the change of the edge and corner angle, the welding seam quality is guaranteed, the precision of the steel pipe welding forming is improved, and the steel pipe welding forming is suitable for various shapes of steel pipes.