5414 results about "Laser soldering" patented technology

The invention discloses a dissimilar metal laser welding device based on swing light beams and molten pool state monitoring. The dissimilar metal laser welding device aims at improving the welding quality and the joint stability. The device comprises a laser welding head with a light beam swinging function, and the laser welding head can implement nonlinear energy scanning in a welding area according to a preset track type, frequency and amplitude; the acquisition module can synchronously acquire a visual image, an excitation spectrum and an infrared thermal imaging signal of the molten pool at a high frame rate, and extracts interface diffusion and metal mixing characteristics through multi-modal fusion; the calculation module performs dynamic feature modeling according to the collected physical feature information and the swing parameters, and quantifies multi-dimensional state indexes of the welding quality; the control module carries out combined adjustment on the laser power, the welding speed and the swing parameters according to the state indexes, closed-loop feedback control is constructed, and therefore real-time stable regulation and control and defect suppression in the dissimilar metal welding process are achieved.

The invention relates to the technical field of laser welding control, and discloses a laser welding head integrated with a push-pull wire and a control system of the laser welding head. The system comprises a push-pull wire action monitoring module, a laser energy modulation module, a welding seam trajectory tracking module, a welding quality feedback module, a parameter collaborative optimization module and a dynamic deviation correction execution module. Wherein the push-pull wire action monitoring module collects motion parameters in real time and generates a cooperative state index; the laser energy modulation module analyzes the laser power requirement according to the workpiece parameters and outputs a regulation and control instruction; the welding seam trajectory tracking module identifies welding seam characteristics and offset through a multispectral sensor and generates a dynamic tracking path; the welding quality feedback module evaluates defects and generates an abnormal index set; the parameter collaborative optimization module generates an optimization control parameter set based on the abnormal index set and the tracking path adjustment parameters; and the dynamic deviation correction execution module is used for correcting the track and generating a closed-loop control signal according to the matching action and the energy output time sequence.

The invention provides a high-precision intelligent welding system adapting to complex working conditions, and relates to the technical field of laser welding. The high-precision intelligent welding system adapting to the complex working conditions comprises the steps of S1, based on a high-resolution visual sensor and a laser scanner, S2, based on preprocessed point cloud data, S3, based on a workpiece three-dimensional model, S4, based on an optimized welding path and a material attribute database, S5, based on a dynamic welding parameter set, S6, based on a real-time welding track, and S7, based on multi-sensor monitoring data. S8, based on a defect detection report; and S9, based on a repaired welding result and historical welding data. According to the invention, the geometric data of the workpiece are collected through the high-resolution visual sensor and the laser scanner, the filtering algorithm is applied to remove noise to generate high-quality point cloud data, and a subsequent processing foundation is laid; workpiece features are identified by using a point cloud processing algorithm and a machine learning method based on the point cloud data, and an accurate digital model is generated through a three-dimensional reconstruction algorithm.

The invention is suitable for the technical field of laser welding, and particularly relates to a laser welding control method which comprises the steps that an initial polarization image and an initial thermal imaging image of a to-be-welded workpiece are obtained; according to the initial polarization image and the initial thermal imaging graph, the welding path and initial laser parameters of the to-be-welded workpiece are determined; based on the welding path and the initial laser parameters, a laser welding device is controlled to weld the to-be-welded workpiece, and meanwhile a real-time polarization image and a real-time thermal image of the to-be-welded workpiece are obtained; according to the real-time polarization image, the real-time thermal image and the welding path, real-time state information of a molten pool of the to-be-welded workpiece is determined; and real-time laser parameters are determined according to the real-time state information of the molten pool, and the laser welding device is controlled to weld the workpiece to be welded according to the real-time laser parameters. According to the method, accurate welding process control is achieved, and the defects of a traditional visual system are overcome.

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 belongs to the technical field of laser welding, and discloses a real-time feedback control method and system for laser welding penetration stability, and the method comprises the steps: obtaining plasma electron temperature characteristics in a laser welding process in real time through a spectrum monitoring system, and enabling the plasma electron temperature characteristics to be associated with penetration fluctuation as a core input signal of feedback control. The signal has better real-time performance and more accurate feature extraction capability in real-time feedback control of laser welding by virtue of broadband coverage and multi-dimensional information acquisition capability of the signal in combination with a more efficient data analysis mode. A parallel type self-learning fuzzy neural network controller is used for executing real-time feedback control output of laser welding penetration fluctuation. On a control architecture, a traditional PD controller and a fuzzy neural network are connected in parallel and are respectively used as a PD control module and a fuzzy neural network control module. And the process database is embedded into the forepart structure of the neural network control module in a fuzzy rule form.

The invention relates to the technical field of power batteries, and discloses a plastic uptake support CCS integrated busbar assembly, which comprises a plastic uptake support body, busbar bodies, a wiring harness assembly and a collection nickel sheet, the plastic uptake support body is provided with a plurality of positioning grooves and riveting columns, the positioning grooves are fixedly connected in series with the plurality of busbar bodies through the riveting columns, and the collection nickel sheet is connected with the wiring harness assembly. The busbar bodies comprise a series busbar, a bridging busbar, a positive leading-out electrode busbar and a negative leading-out electrode busbar, the blister support body is provided with a wire harness buckle, the wire harness buckle is located between the two groups of busbar bodies, a wire is fixed on the wire harness buckle, the acquisition nickel sheet is welded on the busbar bodies through laser, and the acquisition nickel sheet is upwarped in a non-breaking manner after being welded. According to the plastic uptake support CCS integrated busbar assembly, the wiring harness buckle can simply, conveniently and quickly fix the wiring harness and prevent the wiring harness from being separated from the plastic uptake support, a traditional mode of fixing the wiring harness through hot pressing or hot riveting is replaced, and the product cost is greatly reduced.

The invention discloses a weld joint three-dimensional structure detection device based on vortex laser, and relates to the field of laser welding, and the weld joint three-dimensional structure detection device comprises a vortex laser generation system used for generating and emitting vortex laser; the image acquisition unit is used for collecting returned laser data projected to the welding seam and carrying out dynamic scanning and data acquisition; the motion control and feedback system is used for adjusting the relative position of the laser welding head and the workpiece in real time and dynamically adjusting parameters such as welding power and scanning speed according to the collected data result; and the data processing and analyzing platform is used for carrying out image processing and feature extraction on the collected multi-dimensional data and modeling the morphology of the welding sample. The vortex laser serves as a light source for welding seam detection, high-precision, high-depth, multi-parameter and strong-interference-resistance three-dimensional welding seam modeling is achieved, the problems that in the long and thick plate welding process, welding seam detection parameters are few, precision is low, and real-time adjustment cannot be achieved are solved, and meanwhile the device has the performance characteristics of being high in detection precision, high in efficiency and comprehensive in structural parameter.

The invention discloses an automobile tubular part inner wall supporting type laser welding device and technology, and relates to the technical field of automobile tubular part machining, the automobile tubular part inner wall supporting type laser welding device comprises a pipe welding base, an inner wall self-adaption supporting unit and a vertical displacement adjusting assembly, radial guide bases are connected to the two sides of the pipe welding base, and a synchronous servo motor is installed on the outer side of the pipe welding base; an internal driving screw rod and a guide sliding rod drive a stroke frame and a bearing supporting plate to achieve radial positioning of the supporting unit, the inner wall self-adaptive supporting unit comprises a driving cabin and a synchronous power source, transmission is achieved through a lead screw, a transmission fluted disc and a vortex transmission cylinder, a sliding adjusting sleeve is pushed, a supporting rod drives an arc face attaching lining plate to open and attach to the inner wall of the tubular part, and the tubular part is fixed. A vertical displacement adjusting assembly is arranged in a frame supporting beam, a variable frequency motor and a fine adjustment motor drive a guide screw rod and a screw rod correspondingly, alignment of a laser welding head is adjusted, a welding slag collecting groove in the center of a base and a detachable storage box are convenient to remove slag, and the welding machine is suitable for welding of tubular parts of multiple specifications.

The invention provides an aluminum alloy battery shell automatic laser welding method and system.The method comprises the steps that firstly, three-dimensional geometric data and contact position coordinates of the surface of a shell are obtained through a laser scanner, a digital model is constructed, then contact material characteristics are extracted, and initial welding parameters are determined; a real-time visual system and an ultrasonic sensor are used for correcting the position of a welding head, stable contact is established, energy distribution is optimized according to the heat conductivity and the geometrical shape of a material, preheating treatment is executed, in the welding process, temperature changes are monitored through infrared thermal imaging, laser parameters are adjusted, stable penetration depth is kept, and finally the quality of a welding seam is evaluated through air tightness detection. By means of multi-sensor fusion and self-adaptive control, high-precision and high-quality laser welding of the battery shell with the complex shape is achieved, and welding reliability and production efficiency are improved.

An electric wheel controller and methods for operating and manufacturing an electric wheel controller are disclosed. Embodiments include a controller forming a structural and / or load bearing component of the vehicle suspension system. Embodiments of the controller can be mounted to a wheel assembly, and in some embodiments the controller is a suspension knuckle. Embodiments include a controller with a cavity and electronic circuitry submerged in liquid coolant. During operation the coolant can absorb heat from the immersed circuitry. In some embodiments the coolant transitions to a gas and / or vapor, and can move to an upper portion of the cavity. When the coolant contacts the cooler surfaces of the cavity the coolant can transition back to a liquid and return to a pool of liquid coolant in which the circuitry is immersed. A heat sink can be connected to the controller, such as by laser soldering.

The invention discloses a light spot shaping device based on wave plate polarization conversion and a use method, and relates to the technical field of laser processing, the device divides random polarized light into S / P light through a first polarization beam splitter (PBS), converts the S light into P light through a first 1 / 2 wave plate, modulates the S light through a conventional silicon-based liquid crystal spatial light modulator (LCoS SLM), and converts the P light into the S light through a second 1 / 2 wave plate. And the beams are combined by the second PBS. The method comprises the steps of light splitting, polarization conversion, phase modulation, beam combining, beam expanding and focusing and the like. The double 1 / 2 wave plates are combined with the conventional PBS, the laser energy utilization rate is higher than 85%, commercial SLM equipment is adapted, the machining efficiency of the shaped annular light spots is remarkably improved compared with that of Gaussian beams, the method is suitable for laser welding and metal 3D printing, and the problems of energy waste and high cost are solved.

The invention discloses welding processing equipment for a new energy battery pack wire harness assembly, and particularly relates to the technical field of wire harness welding, the welding processing equipment comprises an equipment base, a conveying device is fixedly mounted at the top end of the equipment base, a sleeve device is arranged at the front end of the conveying device, and a feeding device is arranged on the side, close to the sleeve device, of the top end of the equipment base; a conveying device is arranged at the top end of the equipment base, a wire stripping device is arranged at the middle end of the conveying device, a welding device is arranged at the rear end of the conveying device, and a material conveying device is arranged on the side, close to the welding device, of the top end of the equipment base. And automatic feeding of the cable and automatic sleeving of the heat-shrinkable sleeve are achieved, and subsequent automatic laser welding machining of the cable is facilitated.

The invention discloses a towel rack laser welding control method and welding device based on AI visual guidance, and relates to the field of laser welding. Time-space synchronization constraint conditions of the visual six-axis module and the welding six-axis module are established based on the welding seam point set, and a double-station alternating path is generated in combination with a path planning algorithm; the double-station alternating path is converted into a control instruction to be issued to a visual six-axis module and a welding six-axis module, and the welding six-axis module executes a welding task according to the control instruction; and laser welding characteristics are obtained in real time when the welding six-axis module executes a welding task, and a composite control model is constructed based on the laser welding characteristics so as to dynamically adjust welding parameters. According to the method, collaborative path generation, collision pre-judgment and local path optimization between the double modules are achieved, and the intelligent collaborative efficiency of the welding task, the performability of path planning and the stability of the welding process are effectively improved.

The invention relates to the field of welding devices, and discloses a laser swing welding device and a welding method.The laser swing welding device comprises a supporting table, an adjusting mechanism, a swing mechanism, a laser welding head, a gradient temperature changing mechanism, a housing, an air supply mechanism, an air injection preheating mechanism and a clamping mechanism; the adjusting mechanism is arranged on the supporting table and connected with the gradient temperature changing mechanism so as to change the welding position of the laser welding head. A first plate body and a second plate body are placed on the supporting table so as to be limited by the clamping mechanism. The laser welding head is rotationally arranged on the housing and driven by the swing mechanism so as to conduct swing welding on the welding position between the first plate body and the second plate body. Through cooperation of the gradient temperature changing mechanism, the ultrasonic transducer and the gas supply and jet preheating mechanism and cooperation of the eccentric driving disc and the swing frame, preheating of protective gas, gradient cooling after welding and heating are achieved, thermal stress and thermal shock are reduced, the welding seam performance is improved, laser energy is evenly distributed, and the welding quality of dissimilar metal plates is improved.

The air-cooled handheld laser welding gun comprises a gun body and a grip connected with the gun body, a light inlet light path and a light inlet are arranged in the grip, a light outlet light path and a light outlet are arranged in the gun body, at least one group of detachably connected lens modules is arranged in each of the light inlet light path and the light outlet light path, and the lens modules are detachably connected with the grip. The gun body is provided with an adjusting assembly for reflecting laser in the light inlet light path to the light outlet light path, a reflecting mirror is arranged in the adjusting assembly, the laser is reflected from the light inlet light path to the light outlet light path through the reflecting mirror, the air cooling assembly comprises an air cooling pipe and an air cooling channel connected with the air cooling pipe, one end of the gun body is connected with a light outlet nozzle assembly, and the other end of the gun body is connected with the light outlet nozzle assembly. The light outlet nozzle assembly is connected with a light outlet pipe and a welding nozzle. According to the welding gun, the gas path is arranged around the light path, the gas path forms a loop to cool the light path, the gun body and the grip are cooled, meanwhile, the lens on the light path can be cooled, and the service life of the welding gun and parts is prolonged.

The invention relates to the technical field of laser welding, in particular to a laser welding tool for multi-size battery machining, which comprises a machining box body and a moving assembly for driving a laser welding head, a base frame is fixedly mounted at the top of the machining box body, and a pushing feeding assembly is arranged in the base frame. And the driving assembly is used for driving the battery bodies to achieve interval type horizontal transferring, a concentric-square-shaped moving plate in the pushing feeding assembly is responsible for gradually feeding the battery bodies step by step, moving blocks are fixedly installed at the two ends of the concentric-square-shaped moving plate, and upper and lower belt material assemblies are arranged in the moving blocks. According to the full-automatic battery top end cover welding machine, time sequence coupling of the four functions of clamping, conveying, taking and placing and cleaning is achieved, multi-process cooperation is completed, the electrical control complexity and cost are greatly reduced, absolute synchronization of takt time among the processes is fundamentally ensured, extremely high repeated positioning precision and anti-interference capacity are achieved, and the welding quality of a battery top end cover is improved.

The invention relates to the technical field of pipeline welding, and discloses a thick-wall pipeline all-position laser automatic welding device and a matched welding method.The thick-wall pipeline all-position laser automatic welding device comprises a supporting base which is of a device foundation supporting structure, a first lifting table and a second lifting table are installed on the upper end face of the supporting base, and a closed-loop alloy steel rail is installed at the upper end of the first lifting table; and the closed-loop alloy steel track is a welding walking path of the laser welding equipment. According to the full-position automatic laser welding device for the thick-wall pipeline and the matched welding method of the full-position automatic laser welding device, precise adaptation is achieved through cooperation of a laser vision sensor and a multi-dimensional adjusting mechanism, the laser vision sensor collects weld joint contour data in real time, and when deviation is detected, a control system drives a longitudinal telescopic table and a double-shaft angle adjusting frame; the laser welding device is subjected to three-axis position adjustment and double-axis angle compensation, when the ovality of the pipeline causes deviation of a welding seam, the first longitudinal telescopic table can move in the direction perpendicular to the axis of the pipeline, and the double-axis angle adjusting frame synchronously adjusts the angle of a welding head.

The invention discloses a device and method for improving the laser welding quality of a large cylindrical battery tab, belongs to the technical field of new energy automobile battery welding, and aims to solve the problems of low material absorption rate, poor welding protection effect and the like in the prior art. The device comprises a fastening pressing block, the fastening pressing block fixes a battery cell and a collector plate, the fastening pressing block is provided with an internal gas passage, a blowing nozzle of the fastening pressing block is sequentially connected with a plasma activator, a gas heating device, a gas flow controller and a protective gas cylinder, and an exhaust nozzle of the fastening pressing block is connected with an exhaust device. Nitrogen blown out through the blowing nozzle sweeps over the surface of a to-be-welded area of the collector plate, a protective air curtain is formed in the to-be-welded area, the plasma activator conducts ionization activation on the nitrogen, formed nitrogen free radicals and the to-be-welded surface form a nitride layer in a chemical mode, and the laser absorption rate of the material can be remarkably improved. The reaction between the preheated workpiece surface and nitrogen free radicals can be accelerated, and a dual synergistic mechanism of physical preheating and chemical activation is formed.

The invention belongs to the technical field of laser welding, and discloses a multi-parameter cooperative control laser welding method and system.The method comprises the steps that a laser energy control model is established based on material strength-thickness-gap ternary coupling, and the output power of an optical fiber laser is controlled; coaxial three-layer gradient gas is adopted for protection of a welding area, preheating before welding and double-temperature-zone gradient annealing after welding are adopted, the output power of an optical fiber laser and the three-layer gradient gas protection flow are regulated and controlled in real time through combination of multiple sensors and a control algorithm, the temperature of a heat affected zone is monitored in real time, and a cooling nozzle is controlled for cooling. And continuous parameter optimization is achieved through machine learning, and multi-parameter control laser welding is achieved.

The invention relates to the technical field of welding assistance, in particular to an auxiliary device for metal pipe welding, which comprises a welding machining table, a sliding groove is formed in the welding machining table, and a first moving frame and a second moving frame are arranged in the sliding groove in a sliding manner; the first moving frame and the second moving frame are each provided with a first through groove allowing a metal pipe to penetrate through, and the first moving frame and the second moving frame are each provided with a sealing mechanism used for sealing the corresponding first through groove. According to the auxiliary device for metal pipe welding, by starting air cylinders on a first fixing frame and a second fixing frame, a laser welding machine is located over a welding seam, and as two second moving frames drive a second annular frame to be attached to the surface of a rotating ring, multiple sealing rings can abut against one another, the welding seam is made to be in a relatively-sealed environment, and the welding seam is welded. At the moment, the welding seam can be located in the space filled with the protective gas without dead angles by introducing the protective gas.

The invention discloses an intelligent tailored blank laser welding device for multi-angle adjustment of metal parts, and belongs to the technical field of laser welding devices. An intelligent tailored blank laser welding device for multi-angle adjustment of metal parts comprises a device body and a welding table fixedly installed on the surface of the top end of the device body, placing frames are correspondingly and fixedly installed on the surface of the welding table, and metal plates to be welded are placed in the two placing frames; a first fixing frame and a second fixing frame are arranged at the corresponding ends of the two containing frames correspondingly, and sliding grooves are formed in the inner side faces of the first fixing frame and the second fixing frame correspondingly. According to the intelligent tailored blank laser welding device for multi-angle adjustment of the metal parts, under the condition that a gear moves along with a sliding block, the gear enables a welding head to swing in a small-amplitude reciprocating mode to conduct scale welding on two metal plates under the action of a first toothed plate and a second toothed plate, the metal plate welding speed of welding equipment is increased, and the welding efficiency is improved. And the welding quality of the welding device on the metal plate is also ensured.

The invention discloses an automobile light-weight aluminum part connecting process and equipment based on laser welding, and relates to the technical field of automobile aluminum part laser welding, the equipment is based on a base body, a man-machine interaction control screen is arranged at the front end of the base body, and a driving motor and a threaded rod are arranged on the side wall of the base body; a lateral protection metal plate is fixed to the top end of the tool, a parameter adjusting plate is arranged on one side of the tool, a rotary station driving motor and a self-adaptive clamping tool are fixed to the parameter adjusting plate, an anti-scratching gasket is arranged on the inner wall of the tool in the circumferential direction, and the outer side of the tool is connected with a feeding air cylinder through a linkage lug base. The air cylinder is connected with a pressure controllable extrusion table through a first linkage lug base and a force transmission bending arm. A main bearing support is further welded to a base body, a laser welding head is installed on the main bearing support through a jacking air cylinder, a linear push rod and a fine adjustment lifting table, adjustment stability is guaranteed in cooperation with a guide structure, aluminum parts are prevented from being damaged through flexible clamping, precision is improved through multi-dimensional adjustment, and the precision welding requirement is met.

A laser welding method for a multilayer tab of a battery cell and a battery manufacturing method, the laser welding method comprising preparing a multilayer tab to be welded, an adapter piece, a welding-assisting part, press-fitting tooling and a laser welding device. The press-fitting tooling comprises a first pressing plate and a second pressing plate. The adapter piece is placed on the first pressing plate; the multilayer tab is placed on the side of the adapter piece away from the first pressing plate; the second pressing plate is pressed against the side of the multilayer tab away from the adapter piece, and the side of the multilayer tab close to the second pressing plate can protrude from at least the edge side of the second pressing plate; and the laser welding device is used to weld the multilayer tab to the adapter piece.

The invention relates to the technical field of water heating pipeline welding, and discloses a pipe orifice laser welding tool for butt joint of anti-leakage water heating pipelines, which comprises a laser welding table, two side plates are symmetrically distributed at the top of the laser welding table, placing cylinders are arranged on the two side plates, and pipeline bodies are arranged in the two placing cylinders; an L-shaped plate is further arranged at the top of the laser welding table, a first electric push rod is arranged at the top of the L-shaped plate, and a laser welding head is arranged at the output end of the first electric push rod. According to the pipe orifice laser welding tool for butt joint of the leakproof water heating pipelines, the problem of traditional welding position deviation is effectively solved through the calibration component. Under the action of the pushing assembly and the limiting assembly, the position of the pipeline is accurately adjusted through movement of the inner rod and compression and release of the calibration spring, and it is ensured that a connector and a laser welding head are accurately aligned. The process effectively avoids insufficient welding and welding skips, forms uniform and compact welding seams, reduces the leakage risk during operation of the water heating system, prolongs the service life of the pipeline, and reduces the later maintenance cost.

The invention relates to the technical field of valve machining equipment, and discloses valve welding equipment and a welding method.The valve welding equipment comprises a welding platform, a clamping tool and a welding machine located on one side of a to-be-welded part of a welding piece, and the welding machine comprises an automatic feeding unit, a laser welding head and a driving piece; the automatic feeding unit comprises a storage barrel, an end cover, a rotating assembly, a pushing assembly and a feeding assembly. By designing the storage barrel to integrate multiple storage cavities and cooperating with the rotating assembly, the pushing assembly and the feeding assembly, automatic switching when welding rods are used up is achieved, the full-automatic welding rod replacement function is achieved, manual intervention is not needed, the downtime is shortened, the welding efficiency is improved by 30% or above, accurate positioning of welding spots in the welding rod replacement process is guaranteed, and the welding quality is improved; and meanwhile, the driving part accurately controls circumferential rotation, real-time detection (automatic material changing when the remaining length is smaller than a preset value) of the automatic feeding unit is combined, it is guaranteed that the welding process is not interrupted, continuous annular welding is achieved, and the single-time welding period is shortened by about 25%.

The utility model relates to the technical field of laser welding machines, and discloses a laser welding machine with a heat dissipation mechanism, which comprises a welding machine body and a liquid storage tank fixed on one side of the top of the welding machine body, and further comprises a small water suction pump communicated with one side of the liquid storage tank; cooling liquid in the liquid storage tank is pumped out through cooperation of the small water suction pump and the liquid conveying pipe to be circularly conveyed so as to cool the welding machine body, meanwhile, hot air in the welding machine body is pumped out through cooperation of the cooling mechanism and the exhaust fan, and cold air is input for air circulation; an electric telescopic rod controls a fixing plate to ascend and descend, meanwhile, an adjusting mechanism drives moving wheels to expand outwards, the moving wheels make contact with the ground, the welding machine body can be pushed, workers can conveniently move the welding machine body, and the problems that when an existing laser welding machine is used, the heat dissipation effect is poor, and the welding efficiency is high are solved. And moving is not convenient.

The invention relates to the technical field of spiral finned tube laser welding, in particular to a solid spinning spiral finned tube laser welding machine. Comprising a first base and a second base, a threaded rod is rotationally connected between the first base and the second base, and the threaded rod is in threaded connection with a machining assembly; the first motor drives the driving belt wheel to rotate, so that the machining assembly conducts welding operation of the spiral fins on the surface of the base tube while moving, and through the transmission relation between the driving belt wheel and the driven belt wheel, the base tube synchronously rotates while the machining assembly conducts moving machining; according to the spiral finned tube machining device, the machining assembly is arranged to meet the welding requirement of the spiral finned tube, movement of the machining assembly and rotation of the base tube are controlled at the same time through the same driving structure, the stability and consistency in the machining process are improved, the machining speed can be adjusted more conveniently, fin welding is more uniform, and the welding quality is effectively improved.

The invention discloses a wire feeder and handheld welding equipment. The wire feeding machine comprises a wire guide mechanism, and the wire guide mechanism comprises a first wire guide wheel; a wire feeding channel for guiding a welding wire is formed between the second wire guide wheel and the first wire guide wheel; the adjusting assembly comprises a first force arm, one end of the first force arm is hinged to the first fulcrum, the other end of the first force arm is flexibly supported on the second fulcrum, and the second godet wheel is rotationally connected to the first force arm; and the distance between the second wire guide wheel and the first wire guide wheel can be dynamically adjusted along with the change of the diameter of the welding wire passing through the wire feeding channel under the assistance of the first force arm. By means of the mode, the wire feeder can adjust the width of the wire feeding channel in a self-adaptive mode, effectively adapts to changes of the diameter of a welding wire in the wire feeding process, guarantees stable conveying of the welding wire, and avoids the phenomenon of wire clamping or unsmooth wire feeding.

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.