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743 results about "Seam welding" patented technology

Seam Welding. Seam welding is a variation of resistance spot welding. In resistance seam welding, however, the welding electrodes are motor driven wheels as opposed to stationary rods. The result is a 'rolling' resistance weld or non-hermetic seam weld. This process is most often used to join two sheets of metal together:

Longitudinal seam welding special machine with linear structure light type vision sensor and control method thereof

The invention discloses a longitudinal seam welding special machine with a linear structure light type vision sensor and a control method thereof. The longitudinal suture welding special machine comprises a welding gun, the linear structure light type vision sensor, an industrial control computer and an execution mechanism, wherein the welding gun is fixed on the execution mechanism; the welding gun and the linear structure light type vision sensor are connected to an operation rail of the longitudinal seam welding special machine, and the linear structure light type vision sensor is arranged in front of the welding gun; and the output end of the linear structure light type vision sensor is connected with the execution structure through the industrial control computer. With the control method, the concept of a coordinate system is established, and a welding seam track is detected through the vision sensor to essentially change an application way of corresponding the welding gun to an image reference point through a rigid body relation, and the method can also be used for tracking the space curve welding seam without limitation of tracking the linear welding track. The longitudinal seam welding special machine detects the whole welding seam track, even if the sensor is out of the visual field, the last section of the welding seam can also ensure the tracking of the whole welding seam.
Owner:SOUTHEAST UNIV

Program-controlled side-moving oil cylinder peripheral seam welding machine

The invention relates to a program-controlled side-moving oil cylinder circumferential seam welding machine, which consists of seven parts: an automatic control system, a power clamping mechanism, a lateral shifting device, a vertical lifting device, a welding torch swinging device, a position fine-tuning device and a welding mechanism. The invention adopts a PLC programmable controller as a main control unit, and adopts a Chinese display and video touch screen as a parameter adjustment dialogue interface. The touch screen can set the welding voltage, current welding speed and swing speed of each layer, and it is equipped with automatic and manual buttons for welding torch up and down. The invention adopts the mode of rotating the workpiece and fixing the welding torch; the welding torch is equipped with a fine-tuning mechanism and a two-axis angle adjustment device, which can adjust different welding angles; the welding torch is controlled by air pressure, and the micro DC motor drives the welding torch to swing; the tailstock is tightened by air pressure, and the machine head The three-jaw clamping method is adopted to realize automatic, manual and semi-automatic operation. The invention has the advantages of high degree of automation, good welding quality, safety and reliability.
Owner:YANCHENG EAST MACHINERY MFG CO LTD

Tank fabricating and welding method

ActiveCN102848087AControl welding deformationAdvantages of making welding methodsWelding apparatusStructural engineeringSeam welding
The invention discloses a tank fabricating and welding method, which is characterized by comprising the following steps of: a. fabricating and welding a tank soleplate, wherein the step comprises: (1) paving the soleplate, and (2) welding the soleplate; and b. fabricating and welding a tank wall board, wherein the step comprises: (1) paving the wall board, and (2) welding the wall board, and the step of welding the wall board comprises: 1) temporarily not welding 300mm of the lower edge of a longitudinal weld and welding the lower edge together with a circular seam after being paired with a next sine wall board; 2) when welding the circular seam, enabling welders to be uniformly distributed on the surrounding of the tank and welded in the same direction; 3) selecting the setting distance of an anti-deformation fixture according to the thickness of the wall board before welding the circular seam, the distance of the fixture of the wall board with delta equal to 6mm being 300mm; and 4) selecting an even number of welders when welding the wall board, the levels of the welders being close, and welding with the same vertical seam and circular seam welding parameters. The tank fabricating and welding method disclosed by the invention has the advantages of simple and convenient operation, strong maneuverability and the capability of effectively controlling the welding deformation of the tank.
Owner:MCC5 GROUP CORP SHANGHAI

Flat position single-seam symmetrical welding method for orthotropic plate U-shaped rib corner welding seam robot

The invention relates to a flat position single-seam symmetrical welding method for an orthotropic plate U-shaped rib corner welding seam robot. The method comprises the following steps that A, U-shaped rib groove processing, compression and bridge deck plate blanking are carried out for obtaining a U-shaped rib plate unit through assembly; B, the U-shaped rib plate unit is horizontally placed on a reverse deformation turning moulding bed, and the position of the U-shaped rib plate unit is regulated so that the center line of the U-shaped rib plate unit is coincident with the center line of the turning moulding bed; C, the U-shaped rib plate unit is clamped and fixed, in addition, reverse deformation is carried out, the turning angle of the reverse deformation turning moulding bed is regulated so that a U-shaped rib to be welded is positioned in the horizontal position, and in addition, an angle scale is used for detection; D, the welding program and the welding specification parameters are input into a robot automatic welding system so that two welding hands arranged on a robot cantilever respectively and simultaneously carry out flat position single-seam welding on the angle welding seams of the two sides of the U-shaped rib. The method provided by the invention has the advantages that the U-shaped rib is assembled on the platform, the assembling precision is high, and a gap between the U-shaped rib and a bridge deck plate can be enabled to be within 0.5mm. The robot automatic welding hand has the electric arc tracking function, the change of the welding current and the electric arc voltage is sensed through swinging in the welding process, and the small deviation of a weld pass is corrected.
Owner:CHINA RAILWAY SHANQIAO GRP CO LTD

Automatic circular seam welding pipe tongs

The invention discloses automatic circular seam welding pipe tongs and relates to processing equipment for automatically welding circular seams of elbows/flanges, belonging to the technical field of welding processing equipment. The welding pipe tongs are characterized in that the main body of a driving and rotating mechanism is a bracket with a U-shaped groove, and one side of the bracket is connected and fixed with a U-shaped base box body, while the other side is provided with a rotary gear ring, a supporting seat, a roller bearing, a transition gear, a drive device and a jacking drive, wherein a driving shaft of the drive device is connected with the transition gear, the transition gear is externally engaged with the rotary gear ring, and the rotary gear ring is supported by the supporting seat and the roller bearing which are distributed along the circumference of the rotary gear ring; and a self-centered positioning and clamping mechanism is arranged in the rotary gear ring. Thewelding tool can clamp and rotate an elbow/flange to be welded and realize manual welding and ensures that circular welding seams of elbows/flange inner corners/outer corners can be automatically welded, thereby the labor intensity of workers is reduced, the clamping number of times is reduced, and the welding quality and efficiency are improved.
Owner:KUSN HUAHENG ENG TECH CENT

Jet printing type steel guard rail

The invention discloses a spraying type steel barrier, which comprises columns, upper cross bars, lower cross bars and vertical bars. The main bodies of the columns, the upper cross bars, the lower cross bars and the vertical bars are all integrated style steel works. The columns are made from the galvanized steel strip, made into steel pipe of a certain shape and sprayed with plastic or paint; the upper cross bars, the lower cross bars and the vertical bars are integrated parts which the upper cross bars, the lower cross bars and the vertical bars are respectively made from the galvanized steel strip, steel pipes of a certain shape are made through extrusion forming of the steel pipe stock mould, seam welding of the high frequency induction welder and extrusion forming of the steel pipe shaping mould and the integrated parts are formed by placing the vertical bars between the upper cross bars and the lower cross bars, welding and fixing, and at last spraying plastic or paint on the exterior surface of the integrated parts. The spraying type steel barrier has the advantages of high structural strength, deformation resistance, beautiful and clean barrier surface, rustiness resistance, easy cleaning, greatly reduced maintenance cost, both the beautiful appearance of the PVC plastic steel barrier and the high strength of the assembly type barrier.
Owner:JIANGSU AIKEQING IND

Hydraulic lifting reverse method of chimney steel inner cylinder

The invention relates to a hydraulic lifting reverse method of a chimney steel inner cylinder, which is mainly characterized in that the body of the chimney steel inner cylinder is divided into a plurality of cylinder sections being convenient for lifting along the height direction of the chimney steel inner cylinder, and each cylinder section is divided into a plurality of cylinder sheets according to the requirements convenient for roll bending manufacture; on the basis, the first section steel inner cylinder of the head cylinder of the chimney steel inner cylinder is assembled, and then a spiral expansion ring and a hydraulic lifting device are arranged in the section steel inner cylinder; after the first section steel inner cylinder is lifted by the height of the first section steel inner cylinder by utilizing the hydraulic lifting device, the subsequent cylinder sections are assembled and are in horizontal seam welding with the first section steel inner cylinder body of the head cylinder, thereby completing the installation of the first section steel inner cylinder of the head cylinder, and subsequently, the installation process of the first section steel inner cylinder of the head cylinder is repeated, enabling the subsequent steel inner cylinder sections to be installed section by section from top to bottom until the installation construction of all steel inner cylinders is completed. The construction method does not need high-altitude operation, has convenient operation and high construction speed and can effectively ensure the construction quality and construction safety. Meanwhile, the construction method can also save materials, lower loss and reduce cost.
Owner:河南四建集团股份有限公司

Automatic straight seam welding machine

The invention relates to the technical field of welding machines, in particular to an automatic straight seam welding machine. The automatic straight seam welding machine comprises a locating clamping device installed at the lower part of a working table and a straight seam welding device installed at the upper part of the working table. The straight seam welding device comprises a spot welding arc striking part, a welding seam locating part and a submerged-arc welding part. The working table is provided with a transverse moving device, which can move along a welding seam, corresponding to the straight seam welding device. The spot welding arc striking part, the welding seam locating part and the submerged-arc welding part are fixed on the transverse moving device respectively. A machine frame is provided with an automatic feeding device horizontally and movably. The automatic feeding device is arranged below the locating clamping device. An accessory device for driving the spot welding arc striking part and the submerged-arc welding part is arranged beside the machine frame. The automatic straight seam welding machine is provided with an automatic control system corresponding to the locating clamping device, the straight seam welding device, the transverse moving device and the automatic feeding device. The automatic straight seam welding machine disclosed by the invention has the advantages of high automation degree, good welding quality, convenience for operation and high working efficiency.
Owner:DONGGUAN YUNDONG PRINTING PLATEMAKING EQUIP

Welding structure for inner container longitudinal seam of stainless steel gas cylinder and welding method

The invention discloses a welding structure for an inner container longitudinal seam of a stainless steel gas cylinder and a welding method. The welding structure comprises a strip-shaped auxiliary board, wherein a main gas guide hole and a gas guide groove are formed in the strip-shaped auxiliary boar in the length direction; the main gas guide hole and the gas guide groove are arranged in parallel; a plurality of gas guide small holes are formed between the main gas guide hole and the gas guide groove; the two ends of the gas guide small holes are respectively communicated with the main gas guide hole and the gas guide groove; and the cross section of the gas guide groove and the cross section of the longitudinal seam to be welded are positioned in the same plane. The welding method comprises the following steps: rolling round; carrying out butt welding and spot welding; carrying out spot welding on run-on plates and run-off plates; clamping; and welding. According to the invention, an MIG automatic welding process is adopted, so that the primary input-cost of welding equipment is low; in a later using process, the input using and maintenance costs are relatively low and the working efficiency is improved greatly. By adopting the process in the invention, the qualification rate of nondestructive testing reaches 99.4% or above in an actual longitudinal seam welding process of an insulated gas cylinder and a cylinder for an LNG vehicle; and physical and chemical test projects completely meet standard requirements.
Owner:ANHUI DAPAN SPECIAL EQUIP VEHICLE CO LTD

Vertical circular seam welding machine

Belonging to the field of welding equipment, the invention relates to a vertical circular seam welding machine applied to thin-wall stainless steel tee bellmouth non-oxidation welding. The welding machine comprises an operating platform, a driving device, a welding gun and a slewing mechanism for causing the product to be processed to rotate with the slewing mechanism in a matched manner; the slewing mechanism comprises a principal axis and the driving device; a principal axis mounting hole is arranged on the operating platform, and the principal axis is matched with the principal axis mounting hole; and the lower end of the principal axis is connected with the driving device, the upper end thereof is provided with a stationary axis for fixing the product to be processed, a through hole for conveying shielding gas is arranged in the principal axis, air holes are arranged on the stationary axis, the air holes are communicated with the through hole in the principal axis, and the welding gun is fixed on the operating platform by a welding gun seat. With the welding machine of the invention, the product clamping process can be simplified, and the welding efficiency and welding quality can be improved, as a result, the purpose that pipe fittings are oxidized neither internally nor externally after being welded is achieved; and meanwhile, the labor intensity is greatly reduced and the welding time is shortened.
Owner:ZHE JIANG TIAN XING PIPE

Construction method for using layering method to construct double-curved-surface stainless steel curtain wall

ActiveCN103541474AFast Construction CompletedSafe construction completedWallsBuilding material handlingSurface layerKeel
The invention discloses a construction method for using a layering method to construct a double-curved-surface stainless steel curtain wall. The method includes: building a double-curved-surface stainless steel curtain wall three-dimensional model and deepen drawing; decomposing the double-curved-surface curtain wall structure according to the model and deepen drawing into a surface layer and a keel layer; deepening construction drawings of the surface layer and the keel layer; machining and constructing the surface layer of the double-curved-surface stainless steel curtain wall; cutting and transporting the surface layer; constructing the keel layer of the double-curved-surface stainless steel curtain wall; mounting and seam welding the surface layer; processing the facing of the double-curved-surface stainless steel curtain wall. The construction method has the advantages that the layering method is used to construct the double-curved-surface stainless steel curtain wall, the surface layer with large welding and splicing work load is constructed in a factory, the keel layer is welded on site, filed structural features are combined to adjust and eliminate construction errors reasonably, coordinating and unifying of the curtain wall structure and a main body structure are guaranteed, and accurate curved surfaces and radian smoothness of the curtain wall are guaranteed.
Owner:ZHEJIANG CONSTR ENG GRP CO LTD
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