889 results about "Laser beam welding" patented technology

The invention relates to a tin ring automatic focusing laser soldering tin fixing and 3D welding spot detecting system, and belongs to the technical field of industrial automatic laser processing. The system is characterized in that a tin ring preparation module identifies pins in real time and dynamically optimizes winding parameters through visual positioning and a self-adaptive winding head, and performs defect identification and pre-repair analysis through multispectral imaging; the soldering tin positioning module is used for switching stations through a rotary table, and precise positioning and clamping of a product are realized by combining laser contour sensing and a focusing compensation algorithm; the laser tin soldering module can visually identify tin materials and automatically call welding parameters, laser power and action time are regulated and controlled in real time by establishing a regional heat conduction model, and gradient cooling is implemented after welding; and the 3D detection module adopts dual-mode scanning, constructs a welding spot three-dimensional model based on fusion data, recognizes microcracks through super-resolution processing, and discriminates the welding spot quality. And automation and intellectualization of the whole process from tin ring preparation to welding spot quality detection are achieved.

The invention provides a double-robot collaborative welding dynamic compensation system which is characterized by comprising two welding robots slidably mounted on two ground rails, a six-axis laser welding seam locating device is mounted on each welding robot, and a machine vision assembly is arranged in each laser welding seam locating device. A stand column cantilever used for driving the welding robot to move is installed on the ground rails in a sliding mode, a rotary table position changing machine is arranged between the two ground rails, a powder concentrator rotor is placed on the rotary table position changing machine, and a control system is electrically arranged beside the welding robot. The double robots cooperatively work through the laser distance measuring sensor and the visual assembly, rapid concentric alignment of a rotor, blade angle calibration and real-time tracking of a welding seam are achieved, high-precision positioning of the laser distance measuring instrument is combined with intelligent image processing of the visual module, the accuracy of welding path planning is remarkably improved, deviation caused by manual intervention is avoided, and the working efficiency is improved. The two robots cooperate with each other, so that the welding efficiency is improved by more than 40% compared with a single-machine system.

The invention relates to the technical field of cookware welding, and discloses a cookware processing welding device which comprises a supporting transverse plate, a welding mechanism and a partition plate clamping mechanism, and frame-shaped supporting legs are arranged at the two ends of the supporting transverse plate; the welding mechanism comprises a bottom support arranged on the side, close to the ground, of the supporting transverse plate, the middle of the bottom support is slidably connected with a transverse moving seat, the transverse moving seat is provided with a U-shaped sliding seat synchronously moving along with the transverse moving seat, the U-shaped sliding seat is slidably connected with a telescopic rod, and the end of the telescopic rod is fixedly connected with a fixing block. A stand column is arranged on the side, away from the ground, of the fixing block, the end of the stand column is rotationally connected with a laser welding head, a pitching adjusting assembly for adjusting the pitching angle of the laser welding head is arranged on the side face of the transverse moving seat, and a tracing guide block is arranged in the middle of the supporting transverse plate. Through the synergistic effect of the deflector rod and the guide groove, the laser welding head is driven to accurately move along a preset track, and automatic welding treatment of a space curve welding seam between the arc-shaped partition plate and the inner wall of the pot body is achieved.

The invention belongs to the field of manufacturing of other special equipment, and particularly relates to a folding chair cross brace welding device which comprises a rack, a transmission mechanism is arranged in the rack, two welding mechanisms are symmetrically arranged on the two sides of the rack, a conveying belt mechanism is arranged at the bottom of the rack, the transmission mechanism comprises two transmission shafts, and the two transmission shafts are rotationally installed in the rack. The transmission mechanism comprises a transmission shaft, two groups of chain wheels are symmetrically mounted on the transmission shaft, the chains are meshed with the two groups of chain wheels, a plurality of groups of assembling frames used for assembling a cross brace are arranged between the two groups of chains in a surrounding manner, and the cross brace is composed of two groups of vertical rods and a group of cross rods; the laser welding gun is slidably connected with the guide rail; after being welded, the cross brace can do circular motion along with the assembling frame and automatically fall onto the conveying belt mechanism, workers do not need to take away the cross brace, the workload of the workers is reduced, and meanwhile the automation rate of the device is increased.

The invention belongs to the technical field of thin plate laser welding, and particularly relates to a curved-surface thin plate laser welding device which comprises a welding base. A first supporting frame is arranged on the welding base. The upper fixing base and the lower fixing base are matched with a plurality of short rods to adaptively clamp different types of curved-surface thin plates, and are matched with two laser welding heads to perform double-sided welding, so that the effect of performing counterpoint double-sided laser welding on the different types of curved-surface thin plates is achieved, traditional laser equipment which is difficult to perform double-sided counterpoint welding on the curved-surface thin plates is replaced, and the production efficiency is improved. The multiple short rods on the upper fixing base and the lower fixing base can conduct adaptive clamping according to the curved surface shapes of the thin plates, the welding precision and stability are improved, welding deviation caused by the irregular curved surface shapes of the thin plates is avoided, the two oppositely-arranged laser welding heads can flexibly move to the upper and lower opposite seams of the two curved surface thin plates, and the welding quality is improved. And laser double-face simultaneous welding is achieved, the welding efficiency is improved, a welded joint is firmer, and the overall welding quality is improved.

The invention belongs to the technical field of hardware machining, and particularly relates to a hardware laser welding machine which comprises a welding machine base. An electric turntable is fixedly connected to the end part of one side of the welding machine base; the output end of the electric rotating disc is fixedly connected with a telescopic frame. A welding frame is arranged outside the telescopic frame; the laser welding head is driven by the arranged sliding frame to slide on the inner wall of the welding frame, the laser welding effect on the inner joint of the U-shaped hardware can be improved, the output end of a first servo motor is used for driving a connecting frame to rotate, a first wheel disc is matched to drive the welding frame to rotate up and down, and the laser welding head can be adjusted at multiple angles; the output power change of the laser welding machine can be controlled by utilizing a convex block to extrude a sliding block to trigger a contact in the process that the convex block slides along with a sliding frame, and a first clamping plate is matched with a second clamping plate to vertically clamp a vertical plate of the hardware and is matched with two extrusion blocks to extrude and clamp the vertical plate left and right; and the welding stability of the [-shaped hardware is improved.

The invention relates to the technical field of ship manufacturing welding, in particular to a large-wall-thickness Al-Mg alloy laser-MIG composite and friction stir welding coupled welding device and method for ships, and the device comprises a sequential system 1, a friction stir welding module 2 and a laser-MIG composite welding module 3; the laser-MIG composite welding module 3 comprises a laser sensing return device 3A, a welding gun swing control device 3B and a laser-MIG composite welding gun 3C; the laser-MIG composite welding gun 3C comprises an MIG welding gun and a laser welding gun, the MIG welding gun and the laser welding gun are coaxially arranged, an optical fiber laser is arranged in the laser-MIG composite welding gun 3C, the optical fiber laser has the functions of laser visual sensing, preheating and post-heating, and the device solves the contradiction between the penetration depth and the defect when a traditional welding method is adopted for the thick plate aluminum alloy for the ship. Axial force needed during friction stir welding can be reduced through laser preheating, the pressure of a main shaft of equipment is remarkably reduced, and the service life of a stirring head is prolonged.

The invention relates to a method for laser beam welding of components (1, 2). The method is characterized in that - a first component (1) made of nickel is arranged at least in sections on a second component (2) made of another metallic material, wherein a thickness (t o ) of the first component (1) is smaller than a thickness (t u ) of the second component (2) and the thickness (t u ) of the second component (2) is 0.05 mm to 2.50 mm, and - in an overlapping area of ​​the components (1, 2) onto a surface of the first component (1), a laser beam (LS) with a power of 500 W to 20,000 W, an intensity of 12.99 * 10 2 W / mm 2 up to 20.79 * 10 6 W / mm 2 and a beam diameter (d f) of 0.035 mm to 0.7 mm and is moved in a linear movement over the surface to produce a weld seam (S) designed as an I-seam in such a way that the weld seam (S) completely welds the first component (1) and the second component (2) up to a predetermined welding depth (ET) of 15 % to 95 % of the thickness (t u ) of the second component (2).

The invention discloses a local area inert gas protection auxiliary vacuum environment laser welding device and method, belongs to the technical field of laser welding, and aims to solve the problem that the laser welding quality of an existing easily-oxidized material is insufficient. A local area inert gas protection auxiliary vacuum environment laser welding device comprises a monitoring and feedback control system, a gas precise control system and a vacuum cavity, a gas nozzle, a workbench and a laser welding head are all arranged in the vacuum cavity, the laser welding head is located above the workbench, the gas nozzle is arranged on one side of the laser welding head, and the gas nozzle is arranged on the other side of the laser welding head. The vacuum pumping system is connected with the vacuum cavity, the laser welding head is connected with the laser welding machine, the gas precise control system controls the flow and the mixing proportion of inert gas jetted by the gas nozzle, and the monitoring and feedback control system monitors the temperature, the vacuum degree, the oxygen content and the plasma state of a welding area. And data are fed back to carry out closed-loop regulation control on various welding parameters. And the welding quality is greatly improved.

The utility model provides a valve seat structure and an electronic expansion valve, the valve seat structure comprises a valve seat part and a switching part, the switching part and the valve seat part are respectively used for switching a first connecting pipe and a second connecting pipe, the valve seat part is provided with a limiting cavity, and an opening of the limiting cavity is located on the bottom wall of the valve seat part; at least part of the switching part is arranged in the limiting cavity in a penetrating mode, and the switching part and the valve seat part form an annular welding seam at the opening of the limiting cavity. According to the technical scheme, furnace welding switching of the first connecting pipe is achieved through the switching part, the welding position of the switching part and the valve seat part is limited to the bottom of the valve seat part, and the situation that when the welding position is located on the side of the valve seat part, laser welding and other welding are prone to being interfered by the second connecting pipe, and therefore welding is not facilitated is avoided; welding of operators and realizability of corresponding welding equipment are facilitated, and convenience and reliability of welding are improved.

The utility model discloses a sodium ion battery cap welding device, which relates to the technical field of laser welding and comprises a workbench, two sliding rods are fixedly connected to two sides of the axis of the top end of the workbench, a first tray is slidably connected to the outer walls of the sliding rods, and the axis of the first tray corresponds to the axis of the workbench. A plurality of battery fixing pieces are fixedly installed at the positions, close to the edge, of the top of the first tray at equal intervals, a cantilever is fixedly connected to one end of the top of the workbench, and a second tray is fixedly connected to the bottom of the tail end of the cantilever; a plurality of battery welding assemblies corresponding to the battery fixing pieces are fixedly connected to the positions, close to the edge, of the bottom of the second tray at equal intervals. According to the technical scheme provided by the utility model, the laser welding technology is matched with the balls, so that the laser welding head can rotate around the sodium ion battery cap at a constant speed, the cap can be uniformly welded on the battery, and the defective product occurrence probability that the cap falls off due to single-point welding or non-uniform welding is reduced.

The invention discloses SnCu alloy laser soldering paste and a preparation method thereof.The raw materials of the SnCu alloy laser soldering paste comprise soldering powder and flux paste, the soldering powder comprises Cu-coated Sn metal powder and silver metal powder, and the flux paste comprises Cu-coated Sn metal powder and silver metal powder; the flux paste comprises modified rosinyl carboxylic acid, a modified rosinyl acrylate polymer, a solvent, a wetting agent, organic amine, an anti-oxidation and anti-tarnishing agent and a thixotropic agent. According to the SnCu alloy laser soldering paste, wetting and diffusion of alloy powder can be effectively promoted through cooperation of all the components, and meanwhile oxidation and pollution in the welding process are reduced; the method can be widely applied to the fields of consumer electronics precision assembly, automotive electronics high-reliability welding, new energy equipment packaging, medical / aerospace extreme environment devices, optical communication core modules, industrial precision devices and the like, and micron-sized precise welding, high-reliability connection and the like are achieved.

The present disclosure relates to methods for joining a first component to a second component with a laser welded lap joint. The laser seam of individual welds is substantially G-shaped. The weld seam comprises a substantially circular portion and a substantially straight portion at an end of the substantially circular portion, the substantially circular portion having a radius and corresponding to a circular arc around a circle centre with a central angle of 270º - 350º, and the substantially straight portion extending radially to the circle centre. The methods may be practiced on blanks prior to forming or on already formed components. The present disclosure further relates to weld assemblies obtained with such methods.

A system includes a laser welder configured to weld a first steel workpiece to a second workpiece at an interface between them. The workpieces may have similar or dissimilar compositions and / or thicknesses. A filler wire may be used to fill a gap at the interface and / or provide a weld joint composition that accounts for the intrusion of aluminum coating from the workpiece(s) into the weld joint. The laser welder's laser beam may be laterally offset from the interface toward one of the workpieces (e.g., a thicker or stronger of the workpieces).

The utility model relates to the technical field of auxiliary machining mechanisms of laser welding water-cooling plates, in particular to a water-cooling heat dissipation mechanism of a laser welding water-cooling plate. The water-cooling plate laser welding device adopts a bottom plate, a support connected to the bottom plate, a water-cooling heat dissipation system connected to the top of the support, a plurality of water-cooling plate positioning assemblies connected to the periphery of the top of the water-cooling heat dissipation system and a plurality of pressing air cylinders connected to the periphery of the bottom plate, and when the water-cooling plate laser welding device is used, the water-cooling heat dissipation system bears a water-cooling plate to be subjected to laser welding; the multiple water cooling plate positioning assemblies are used for positioning and clamping the water cooling plate to be subjected to laser welding, dislocation of the water cooling plate is avoided, then the multiple pressing air cylinders are used for pressing the water cooling plate to be subjected to laser welding, and the distortion degree of the water cooling plate due to too high temperature is reduced to a certain degree; the water-cooling heat dissipation system dissipates heat of the water-cooling plate to be subjected to laser welding, so that heat of the water-cooling plate is rapidly taken away by the water-cooling heat dissipation system, and the phenomenon that the water-cooling plate is distorted and deformed due to too high temperature is avoided.

The invention discloses a hand-held laser welding gun and a hand-held laser welding machine, the hand-held laser welding gun comprises a gun body, a light emitting channel is arranged in the gun body, a light emitting port is arranged at the end part of the gun body, and the light emitting channel is communicated with the light emitting port and is used for emitting a laser beam; the optical assembly is located in the gun body and used for guiding the laser beam to be emitted from the light outlet through the light outlet channel and forming a light beam focus point on the surface of the workpiece to be machined; the distance from the light outlet to a light beam focus point is greater than or equal to 30mm; the air blowing part is arranged on the gun body and used for blowing air in the direction where the light outlet is located, and an air curtain is formed between the light beam focus point and the light outlet so that the projection of the air curtain in the axis direction of the light outlet channel can completely cover the light outlet. The air blowing part blows air to the direction of the light outlet to form the air curtain, so that the projection of the air curtain in the axis direction of the light outlet channel completely covers the light outlet, and smoke and splashes are prevented from entering the light outlet channel.

The invention relates to the technical field of photoelectric hybrid integrated packaging, in particular to an optical module airtight packaging structure which comprises an optical fiber, an optical chip, an electric chip, a circuit board, an elastic connector, a tube shell and a cover plate. Wherein the optical fiber penetrates through the side wall of the tube shell and is welded with the side wall of the tube shell, the optical chip and the electric chip are integrated on the circuit board, the elastic connector is welded with the tube shell, an elastic contact is arranged at the top of the elastic connector and is in contact with a bonding pad at the bottom of the circuit board, the cover plate is welded with the tube shell to form an airtight cavity, and the elastic connector comprises a metal shell, a glass medium and an inner conductor. The top end of the inner conductor is connected with the bottom of the elastic contact, the glass medium is welded to the bottom of the metal shell, and the inner conductor is welded in a cavity of the glass medium and penetrates through the cavity to be welded to the bottom of the metal shell. The cover plate is welded on the tube shell through parallel seal welding or laser welding, and the optical fiber and the elastic connector with airtight performance are welded on the tube shell through welding flux; and forming an airtight packaging structure.

The invention relates to the technical field of laser welding and sealing equipment, in particular to titanium tube laser welding and sealing equipment for sealing a seed source and a method thereof.The titanium tube laser welding and sealing equipment comprises a station rotating stand capable of periodically rotating by 60 degrees, an upper gear ring and a middle gear ring which synchronously rotate are installed on the station rotating stand, and a lower gear ring which coaxially and reversely rotates with the middle gear ring is further installed on the station rotating stand; six positioning cylinders are mounted on the station rotating stand, a clamping cylinder is rotationally mounted in each positioning cylinder, a clamping module is mounted in each clamping cylinder, and a feeding station, a clamping pre-detection station, a welding station, a post-detection station, a clamping loosening station and a discharging station are sequentially arranged on the station rotating stand in the clockwise direction. The station rotating frame capable of periodically rotating by 60 degrees is designed, the feeding station, the clamping pre-detection station, the welding station, the post-detection station, the clamping loosening station, the discharging station and other stations are arranged in order, cooperative operation of the temperature control mechanism is matched, and an efficient and coherent process flow is successfully constructed.

The invention relates to the field of welding equipment, and discloses an air source heat pump shell machining and welding device which comprises a machining table, a guide rail is fixedly installed on the upper surface of the machining table, movable seats are movably installed on the two sides of the guide rail, and a discharging table is fixedly installed over the machining table through a support. Straight notches are formed in the two sides of the upper surface of the discharging table, wedge-shaped connecting blocks are fixedly installed at the top ends of the movable seats, the top ends of the wedge-shaped connecting blocks penetrate through the straight notches in the corresponding sides and are fixedly provided with positioning plates, and a vertical cabinet is fixedly installed on the rear side of the top end of the machining table. The bottoms of the inner side ends of the hollow bent air inlet pipe and the hollow bent exhaust pipe are fixedly installed at the two ends of the laser welding gun correspondingly. Workpieces can be accurately positioned and clamped, weld joints can be evenly butt-jointed, the three-way movement module is matched with the variable-angle welding gun to achieve flexible welding, gas protection and water vapor cooling can be conducted, the welding quality and efficiency are improved, and the application range is wide.

The invention relates to the technical field of electrical cabinet welding, and discloses a welding device for electrical cabinet shell machining, which comprises a base, a supporting plate, a movable transposition mechanism, a clamping mechanism, a pressing mechanism, a rack, a lifting mechanism, a lifting frame, a welding position adjusting mechanism and a laser welding machine, a moving transposition mechanism used for driving the supporting plate to move is installed on the base, a clamping mechanism is installed on the supporting plate, a pressing mechanism extending to the upper side of the supporting plate is installed on the base, a laser welding machine is placed on the ground on one side of the base, a wire is installed on the laser welding machine, and the upper end of the wire is fixedly connected with a welding head. A machine frame is fixed to one corner of the base, a lifting mechanism is installed on the machine frame, a lifting frame is connected to the lifting mechanism, and a welding position adjusting mechanism is installed on the lifting frame. Welding raw materials of the electrical cabinet are conveniently attached and fixed, welding is automatically carried out, adjustment is convenient, welding is more comprehensive, and manpower is saved.

The invention discloses a composite wear-resistant steel plate composite welding device, and belongs to the field of laser welding, the composite wear-resistant steel plate composite welding device comprises a turning plate, a laser welding head and an electric arc welding head are fixedly mounted on the front surface of the turning plate, a support frame is arranged above the turning plate, and an electric push rod is fixedly connected below the support frame; the lower end of the electric push rod is fixedly connected with a connecting piece, a lifting frame is fixedly connected below the connecting piece, and the right side of the lifting frame penetrates through and is rotationally connected with a rotating shaft. The laser welding head and the electric arc welding head are protected by arranging the baffle and the blocking cover, and the laser welding head and the electric arc welding head are in a flat laying state in an idle state and are stored in the baffle and the blocking cover, so that when the laser welding head and the electric arc welding head need to be used, the laser welding head and the electric arc welding head need to be used; and when the laser welding head and the electric arc welding head descend to approach the steel plate, the steel plate can be moved out of the baffle and the blocking cover, so that the laser welding head and the electric arc welding head can be conveniently protected when the steel plate is not used.

The utility model provides a welding wire anti-twisting device, belongs to the technical field of laser welding, and is used for solving the problem of unsmooth wire feeding caused by easy twisting of a wire feeding pipe in the prior art. The utility model provides a welding wire anti-twisting device which comprises a first wire nozzle, a second wire nozzle and a quick release structure, wire holes are formed in the first wire nozzle and the second wire nozzle, the tail end of the first wire nozzle is in running fit with the head end of the second wire nozzle, and the tail end of the second wire nozzle is in running fit with the head end of the quick release structure. The quick release structure is arranged on the outer layer of the matching position of the first thread nozzle and the second thread nozzle and limits the axial unexpected relative sliding of the first thread nozzle and the second thread nozzle. By adopting the design of the wire feeding nozzle capable of movably rotating, the flexibility and the stability of the wire feeding system are obviously enhanced, the torsion of the wire feeding pipe is effectively avoided, the friction and the resistance of the welding wire in the pipe are reduced, and the welding wire is ensured to be conveyed smoothly.

The utility model discloses a laser welding battery positioning tool, which relates to the technical field of clamp tools and comprises a welding table, a processing groove is arranged in the middle of the welding table, cover pressing mechanisms are arranged on two sides of the processing groove, and each cover pressing mechanism comprises a positioning pressing block component and a second cylinder. The positioning pressing block assembly comprises a positioning supporting plate, a positioning sliding plate, a positioning pressing plate and a positioning connecting plate. A first air cylinder, a top cover plate and an ejector rod located in the top cover plate are sequentially installed on the positioning supporting plate. In the utility model, the end part of the processed battery can be respectively positioned and pressed through each group of gland mechanisms, when laser welding is needed, the laser welding work can be carried out on the area by loosening the positioning pressing plate in one group of gland mechanisms, and the other side of the processed battery is in a pressed state, so that the optimal part contact of the processed battery is ensured, and the laser welding efficiency is improved. Consistent registration and tight tolerance between components are kept, and the welding quality of the battery is improved.

The invention relates to metal part welding equipment which comprises an operation table, a fixing clamp is movably installed at the top end of the operation table, a sliding rod is slidably installed in the operation table, a telescopic rod is movably installed at the upper end of the sliding rod, a laser welding head is installed at the end of the telescopic rod in a rolling mode, and a cleaning box is fixedly installed on the outer wall of the lower end of the laser welding head. The cleaning box comprises a replacement block movably mounted on the side wall of the cleaning box; the power roller is mounted in the replacement block in a rolling manner; a power roller is fixedly mounted at the end part of the power roller; the cleaning roller is installed in the replacement block in a rolling mode, and a plurality of cleaning bristles are fixedly installed on the outer wall of the cleaning roller; a sliding rod moves to drive a power roller in a cleaning box to rotate, the power roller rotates to drive cleaning bristles to rotate to clean unwelded parts, the unwelded parts of a workpiece are kept clean, a detection sliding plate can detect welding slag of the unwelded parts, and therefore a grinding roller is driven to clean the adhered welding slag; and the welding quality is improved.

The utility model provides a handheld laser welding gun head, and belongs to the technical field of laser welding. The welding gun is used for solving the problems that in the prior art, a welding gun is generally cumbersome in design and not flexible enough in many practical application scenes. Comprising a welding section and a grabbing section which are connected with each other and internally provided with a laser channel, the tail end of the welding section is a welding nozzle, and the tail end of the grabbing section is used for being connected with a laser output interface. The galvanometer assembly is arranged at the joint of the welding section and the grabbing section and reflects laser emitted from a laser channel in the grabbing section into the welding section. The protective lens assembly and the focus lens assembly are arranged on the welding section in a removable mode, and laser emitted into the welding section passes through the focus lens assembly and the protective lens assembly and then is emitted into the welding nozzle. According to the miniaturized handheld laser welding gun, the working efficiency is remarkably improved, and the flexibility of industrial production is promoted.

The utility model belongs to laser welding equipment, and discloses a handheld laser welding machine which comprises a machine case and an air duct assembly arranged in the machine case, and an air inlet component is arranged on the first side of the machine case; the air duct assembly comprises an air duct, a heat dissipation target device is arranged between the air duct and the air inlet component, the air inlet end of the air duct is communicated with the air inlet component, the air outlet end of the air duct is communicated with an air outlet component arranged on the second side of the case, the air inlet direction of the air inlet end is perpendicular to the air outlet direction of the air outlet end, and the first side and the second side are not opposite to each other. The air inlet component and the air outlet component can be matched to carry out air inlet from the vertical face side with the large area of the machine case, air is discharged from the end side face of the machine case after air cooling heat dissipation is carried out on a heat dissipation target device, the air inlet area can be effectively increased through the air inlet and outlet mode, the air speed is low, noise is smaller, and the heat dissipation efficiency is improved. And a better air cooling effect can be obtained by avoiding a cold plate.

The invention relates to the technical field of laser welding, and discloses a tool platform for laser welding processing, which comprises a worktable, a left-right transverse moving mechanism is mounted on the worktable, an up-down adjusting mechanism is mounted on the left-right transverse moving mechanism, an electric telescopic rod is fixedly mounted on the up-down adjusting mechanism, and a front-back moving plate is fixed at the telescopic end of the electric telescopic rod; a third motor is fixedly installed on the front-back moving plate, an output shaft of the third motor is fixed to an angle adjusting frame, a separation cover is fixed to the angle adjusting frame, a welding head is connected to the laser welding machine through a wire, the welding head is installed on the angle adjusting frame, and the welding head penetrates through the separation cover. A waste gas treatment mechanism extending into the separation cover is installed on the workbench, and an eye protection mechanism is installed on the front side of the workbench. The welding position is convenient to adjust; dazzling light is weakened conveniently during welding, and eyes are prevented from being stabbed by strong light; harmful waste gas generated during welding is conveniently absorbed and purified, and harm caused by the fact that the waste gas is inhaled by human bodies is reduced.

The invention discloses an assembling and welding method of a large-size high-temperature alloy single-wall spray pipe extension section, which comprises the following steps of: sequentially carrying out gas-shielded positioned welding and laser tailored welding on butt welding seams of all scalloped segments by using a positioned welding process device; edge rolling is conducted on the extension section blank formed by splicing and welding the scalloped segments, so that the scalloped segments of the extension section blank are rolled into conical edge rolling from a fan shape; performing assembly positioning and tailored blank laser welding on the last welding seam of the extension section blank; all laser welding seams of the extending section blank are rolled; according to the method, the tailor-welded extension section is bulged, so that the extension section blank is bulged to the extension section, the problem that a product is scrapped due to continuous cracking of a welding seam after the large-size thin-wall high-temperature alloy extension section is formed and tailor-welded and bulged can be solved, and the reliability of the product is improved.

The invention relates to the technical field of welding, and discloses a laser wire filling welding method for an aluminum alloy corner joint, which comprises the following steps: cleaning a to-be-welded part before welding; the panel and the web plate are in gapless angle joint; the panel and the web are positioned and welded through a handheld laser welding gun; formal welding is conducted on the panel and the web through a handheld laser welding gun; wherein the laser power of the handheld laser welding gun ranges from 2400 W to 3000 W; the wire feeding speed of the laser wire feeder in the formal welding process is 100 cm / min to 150 cm / min; in the formal welding process, the laser swing amplitude ranges from 3.8 mm to 5.5 mm; the defocusing amount of the laser in the formal welding is 0 mm to 5 mm; by controlling the laser output power, the laser swing amplitude and the laser defocusing amount, the welding wire is heated more evenly and reasonably, the temperature at the welding seam is prevented from being too high, air holes in the welding seam are fewer, the heat input amount at the welding seam is more stable and reliable, and aluminum alloy is not prone to deformation.

The invention discloses a permanent magnet synchronous motor iron core welding device, and relates to the technical field of iron core welding, the permanent magnet synchronous motor iron core welding device comprises a rack, a welding platform is arranged in the rack, a welding manipulator is arranged right above the welding platform, and a laser welding gun main body is mounted at the end part of the welding manipulator; an auxiliary mechanism capable of synchronously moving along with the laser welding gun body from bottom to top is installed on the outer surface of the laser welding gun body, and the auxiliary mechanism can enable silicon steel sheet layers in a local area to have instant micro gaps before welding operation so as to promote molten liquid to permeate into a deep layer. And after welding is completed, axial downward pressure is applied to the area so as to compact the welding seam and increase the compactness between the silicon steel sheet layers, local pressure release of the welding area is achieved through a double-layer pressing plate and an annular pressing rod, continuous operation of gap pre-expansion, melt permeation and welding seam compaction is constructed in cooperation with a Y-shaped push rod and a pressing wheel, melt permeation and the compactness between the layers are taken into consideration, and the welding quality is improved. The iron core welding quality is improved.