3402 results about "Spot welding" patented technology

The present disclosure provides a molding machine for flexible production of a rebar of bottom, web, and top plates of a precast small box girder, comprising a molding mainframe and a movable gantry welder disposed on an outlet end of the molding mainframe. The molding mainframe includes a frame, two synchronous lifters, a vertical movable sliding table, a plurality of upper support plates, and a plurality of comb-like support plates. A plurality of spot welding assemblies are disposed on an upper side and a lower side of an outlet end of the frame, a straightening rebar receiving assembly is mounted on the lower side and two bending assemblies are mounted on a left side and a right side of the outlet end of the frame, and a straightening rebar feeding assembly is disposed between the straightening rebar receiving assembly and the frame.

The invention provides iron core roll forming equipment and a forming process, and relates to the technical field of transformer manufacturing. An operation vertical plate is vertically arranged at the upper end of the base; the controller and the laser welding machine are fixedly hung on the operation vertical plate; one end of the operation vertical plate is rotationally provided with a material frame for storing iron sheets which are not slotted, and the other end of the operation vertical plate is provided with a winding roller for winding the slotted iron sheets. And a stamping mechanism and a cutting mechanism are arranged on the operation vertical plate between the material frame and the winding roller. Through mechanical linkage of the stamping mechanism, the winding driving mechanism, the correcting mechanism and the spot welding mechanism and cooperation of electric control signals, automation of the whole process of grooving, winding, thickness monitoring, cutting and welding of the iron core roll is achieved. A stamping-cutting-winding integrated machining mode is adopted, and the problems that in the prior art, in the process that too many iron sheet coiled materials are uniformly and completely slotted and then wound in advance, the occupied space is too large, and the coiled materials are prone to being uneasy to convey, bent and damaged due to slotting can be solved.

The invention relates to visual identification line drawing assembly welding equipment which comprises a welding conveying assembly, the welding conveying assembly comprises a platform frame and a conveying roller installed on the platform frame and used for conveying a packing machine plate, the conveying direction of the conveying roller is defined as the first direction, and the other horizontal direction perpendicular to the first direction is defined as the second direction; a self-walking line drawing assembly, a self-walking spot welding assembly and an auxiliary positioning assembly which move in a reciprocating mode in the first direction are arranged on the platform frame. According to the automatic line drawing and welding device, line drawing and welding of the packing machine plate are achieved through joint cooperation of the welding conveying assembly, the self-walking line drawing assembly, the self-walking spot welding assembly and the auxiliary positioning assembly, spraying drawing of visual recognition color lines of different colors can be achieved only through one-time walking, the line drawing efficiency is greatly improved, and the labor intensity of workers is lowered. And an automatic accurate assembling and positioning function and visual intelligent welding are realized.

The invention discloses a method and system for detecting abnormal welding spots in the spot welding process. The method comprises the steps that a time sequence data sequence collected in real time in the welding process is obtained; calculating a first-order difference sequence of the time sequence data sequence; screening a target data segment representing a stable trend based on the first-order difference sequence; performing linear fitting on the first K data points of the target data segment to obtain a first trend direction; performing linear fitting on the last K data points of the target data segment to obtain a second trend direction; calculating the variable quantity of the first trend direction and the second trend direction; and when the variable quantity exceeds a preset threshold value, it is judged that welding is abnormal, and an alarm is triggered. The stable trend section is screened through the differential sequence, noise interference is effectively eliminated, and it is ensured that the quality criterion is based on reliable data. And whether the welding spot is abnormal or not is quickly and accurately judged, so that real-time and non-destructive spot welding quality on-line monitoring is realized.

The invention provides a method and system for detecting the flatness of a spot welding molded surface, and the method comprises the steps: S1, reading a model, recognizing a to-be-detected welding spot file, and reading all parts under a parent level of the to-be-detected welding spot file; s2, performing interference treatment to obtain a part having an interference relationship with the to-be-detected welding spot; s3, the connecting piece is subjected to interference treatment, and a lap joint face is obtained; s4, segmenting the lap joint surface; s5, making a tangent plane of the lap joint surface and shifting up and down to obtain an up-and-down shifting surface; and S6, calculating the flatness according to the distance from the welding molded surface of the to-be-detected welding spot to the up-down offset surface. The logic of the detection scheme is simplified, automatic detection is realized, and the detection result is faster and more accurate.

A friction-stir spot welding device includes a friction-stir spot welding tool including a pin, a shoulder having a hollow part into which the pin is inserted, and an oil agent interposed in an interlayer between an outer peripheral surface of the pin and an inner peripheral surface of the shoulder; and a control unit of the tool. The control unit executes first operation control of relatively moving the pin with respect to the shoulder in a state where the oil agent is held in the interlayer, and second operation control of relatively moving the pin with respect to the shoulder so that the oil agent is discharged from the interlayer to outside through a tip opening of the hollow part.

The invention relates to the technical field of titanium alloy welding deformation control, in particular to a device and method for controlling titanium alloy welding deformation, and the method comprises the following specific steps: S1, preparation before welding: determining a reversible deformation device according to a welding seam form of a titanium alloy part, and carrying out assembly and spot welding; the assembled titanium alloy welding part is fixed to a reversible deformation device, and it is ensured that the part does not deform in the welding process; s2, a welding process; a thermocouple is placed on the surface of a weld joint, a local heating belt and heat preservation cotton are laid, and the heating belt, the thermocouple and local heating control equipment are connected for heat treatment; and S4, measurement of welding deformation is carried out. According to the method, a complete and easy-to-operate technological process is constructed by combining pre-welding anti-deformation tool fixing and post-welding local heating treatment technologies, and the problem of welding deformation with considerable numerical values and complex forms generated by multiple welding procedures of a large complex titanium alloy structure is solved.

The invention relates to the technical field of inductor coil preparation, in particular to a coil winding, paint stripping and spot welding all-in-one machine and a control system thereof.The coil winding, paint stripping and spot welding all-in-one machine comprises a rack, a wire supply mechanism, a wire stripping mechanism, a winding mechanism, a spot welding mechanism, a material returning mechanism, a demolding mechanism and a cutting mechanism; the wire stripping mechanism comprises a wire stripping cutter, a box body and a cutter driving motor, the wire winding mechanism comprises a material receiving platform, an upper cutting die, a lower cutting die and a wire winding cutter, the spot welding mechanism comprises an upper pole head, a lower pole head and a storage jig, the material returning mechanism comprises a station table and a reset air cylinder, and the demolding mechanism comprises a demolding air cylinder and a demolding ejection block. The cutting mechanism comprises a first stock bin, a second stock bin, a mechanical arm and a cutting die, the mechanical arm is used for placing the electrode plates on the containing jig and conveying the electrode plates subjected to spot welding to the cutting die, and all manufacturing links can be sequentially completed by clamping the workpieces in the automatic clamp and the multi-station conveying system at a time.

The invention is suitable for the technical field of aluminum alloy welding, and provides an aluminum alloy pipeline welding device and a welding method thereof.The aluminum alloy pipeline welding device comprises a welding unit and a slow cooling unit; the welding unit comprises a supporting frame, a displacement air cylinder, a displacement sliding block, an electric telescopic rod, a rotating disc, a sliding rail, an electric sliding block, an adjusting piece and a welding gun. The slow cooling unit comprises a fixing plate, a fixing block, a telescopic air cylinder, a telescopic plate, an arc-shaped rail, an electric arc block, a heating plate and an electric heating wire. The four to-be-welded areas of the aluminum alloy pipeline and the flange are divided, the four to-be-welded areas do not make contact with spot welding on the formal welding path, welding operation continues after impurities on the surface of the spot welding area are ground through the angle grinder, and therefore the strength and the sealing performance of a welding seam are improved, and the welding efficiency is improved. And the welding quality of the welding position of the aluminum alloy pipeline and the flange is improved.

The invention relates to the technical field of brazing, in particular to a brazing production line for radiator fin machining and a welding process thereof.The brazing production line comprises a plasma spot welding module and a brazing furnace, and brazing flux spraying equipment and drying equipment are sequentially arranged between the plasma spot welding module and the brazing furnace; a production line conveying belt is arranged in the plasma spot welding module, the brazing flux spraying device, the drying device and the brazing furnace and used for conveying radiator fins. The brazing filler metal in the radiator fins is melted in the welding bin, then the radiator fins are driven to vibrate in the promoting bin, and therefore when the liquid brazing filler metal flows into base metal gaps, the constraint of surface tension can be broken through moderate vibration.

The invention belongs to the technical field of welding devices, and particularly relates to an electric actuator shell automatic welding device which comprises a mounting frame, a supporting frame is fixedly connected to the upper side wall of the mounting frame, a control cabinet is fixedly connected to the side wall of the supporting frame, and a vertical electric push rod is fixedly connected to the upper side wall of the supporting frame. The moving end of the vertical electric push rod penetrates through the supporting frame. When the nameplate is welded to the surface of the electric actuator in a spot welding mode, the welding strength of the nameplate can be automatically detected, and when insufficient welding of a nameplate welding spot is detected, an operator can be timely reminded to carry out repair welding on the nameplate, so that the welding strength of the nameplate is guaranteed, and the welding efficiency of the nameplate is improved. And when four welding spots of the nameplate are detected, the abrasion degree of the welding electrode on the side can be analyzed by recording the frequency of pseudo soldering of a certain welding spot, and then the abraded welding electrode is polished, so that the welding performance of the welding electrode is ensured.

The invention discloses a supporting device for pipeline construction. The supporting device is mainly composed of a pair of breast boards, a connecting rod, a bolt, a magnet and a safety cover plate. The soil retaining plate tightly abuts against the wall of the pipeline slotting, an inserting groove in the inner side is matched with an elastic pin to be preliminarily fixed to a clamping groove in the end of the connecting rod, then the soil retaining plate is further fastened through a second bolt hole corresponding to a first bolt hole and a bolt, spot welding is conducted on the contact portion through a shape memory alloy welding material, and the connecting rod is telescopic. The magnets are arranged in the containing cavities of the connecting rods and connected with the ends of the bolts in a magnetic attraction mode, the connecting stability is enhanced, the top of the breast board is covered with the safety cover plate, and the construction safety is guaranteed. The supporting device provided by the invention is ingenious in structural design, a sloping procedure is not needed, the stability is greatly improved by utilizing multiple connection combinations of bolts, spot welding and magnetic attraction, and meanwhile, the shape memory alloy welding material is combined with the unique structural design, so that rapid mounting and dismounting are realized, and the construction efficiency is effectively improved.

The invention relates to the technical field of forge piece forming, in particular to a deep-cavity thin-wall support forge piece, a forging die and a forming method.The deep-cavity thin-wall support forge piece is characterized in that a heated round bar is subjected to roll forging to obtain a preformed blank, and oxide skin of the blank obtained after roll forging is removed; putting the prefabricated blank into a pre-forging cavity of a forming die, and performing pre-forging forming; after pre-forging is finished, the pre-forged piece is transferred into a precision forging cavity of the same forming die to be subjected to precision forging forming, and a bilaterally symmetrical precision forging piece is obtained; putting the bilaterally symmetrical precision forgings into a slicing die frame for trimming, and cutting off flashes; cutting the bilaterally symmetrical precision forgings subjected to cold shaping from the shunting bin through a cutting device, and separating the bilaterally symmetrical precision forgings into two independent single forgings; forming defects are eliminated, and the forging yield is improved to the level of stable mass production; the thickness tolerance of the functional surface of the product is ensured, the spot welding current stability and the welding strength are ensured, the assembly requirement is met, and the dependence on subsequent machining is reduced; the material cost is reduced and the mold life is prolonged.

A welding device for a chemical pressure vessel comprises a mounting box body, an adjusting and supporting device, a synchronous driving device and follow-up clamping devices, the adjusting and supporting device is arranged on the mounting box body in a sliding mode, the synchronous driving device is fixedly arranged on the mounting box body and used for synchronous rotation driving of a barrel to be tailor-welded, the number of the follow-up clamping devices is two, and the adjusting and supporting device is arranged on the mounting box body. The two groups of follow-up clamping devices are the same in structure, the two groups of follow-up clamping devices are rotationally arranged on the mounting box body respectively and are used for clamping and positioning a barrel, any group of follow-up clamping device comprises a sliding block and a clamping plate, the sliding block is used for controlling conversion of clamping action and rotating action, and the clamping plate is used for clamping and positioning the barrel. The synchronous driving device can synchronously transmit driving force to the two sets of follow-up clamping devices, so that the two sets of follow-up clamping devices drive the clamped barrel to rotate synchronously, the barrel is prevented from moving relatively, the spot welding fixing procedure can be omitted, and the machining efficiency is improved.

The invention provides a portable modularized electroencephalogram signal acquisition device which comprises an acquisition device host, the acquisition device host comprises a top shell assembly, a bottom shell assembly, a plurality of electrode units, a plurality of electrode wires, a first plug connector and a second plug connector, the top shell assembly is detachably connected with the bottom shell assembly, the electrode units are installed on the bottom shell assembly, and the first plug connector and the second plug connector are detachably connected. The electrode units are correspondingly connected with the electrode wires respectively, the ends, away from the electrode units, of the electrode wires are connected with the first plug connector, the second plug connector is installed on the top shell assembly, and the first plug connector is detachably connected with the second plug connector. According to the device, electrical connection points of all electrode units are highly integrated in the first connector, traditional complex operation of multi-point welding or multi-connector connection is replaced by the plugging action of the first connector and the second connector, and an integrated quick connection structure is formed. The most complex internal circuit connection steps are fundamentally simplified, and the assembly efficiency and reliability are greatly improved.

Disclosed is a detection device for laser spot welding micro-weld spot quality based on laser ultrasound, comprising: a nanosecond pulsed laser configured to emit a laser; a half-wave plate configured to generate a phase difference of the laser; a scanning galvanometer configured to focus the laser as a point source and excite an ultrasonic wave on a surface of a sample; a multi-axis displacement platform configured to place and / or move the sample; a laser Doppler vibrometer configured to emit a probe light; an image sensor configured to acquire image data of the sample in a plurality of attitudes; an optical filter configured to receive the probe light to adjust an intensity of the probe light; and a processor configured to be in communication connection with the image sensor, the optical filter, the nanosecond pulsed laser, the scanning galvanometer, the multi-axis displacement platform, and the laser Doppler vibrometer.

The invention relates to the technical field of automobile part machining, and discloses spot welding equipment for automobile part machining, the equipment is mainly composed of a spot welding machine and a spot welding auxiliary structure, the spot welding machine comprises a transformer, electrodes, a controller, a machine body and other conventional components, and the spot welding auxiliary structure is arranged between the upper electrode and the lower electrode of the spot welding machine and fixed to one side of the lower electrode; core components of the device comprise a lifting frame, a double-sided toothed plate, a spring rod, a push block, an auxiliary pressing rod, a reset rod, a sliding box, a ratchet gear, a reciprocating lead screw, a reciprocating sliding seat, an exhaust pipe, a click air pipe, a cleaning air pipe, a telescopic pipe, a cleaning box, an impeller, a cleaning piece and the like. Through the arrangement of the spot welding auxiliary structure, the spot welding quality and efficiency of the automobile parts are remarkably improved, the spot welding auxiliary structure plays an important role in promoting the part machining link of the automobile manufacturing industry, has remarkable advantages in the aspects of guaranteeing the product quality and improving the production benefits, and provides a reliable equipment solution for the automobile part welding process.

The utility model discloses a tail foot stand drawstring spot welding device capable of automatically feeding and blanking, which comprises a conveying mechanism, a working table, a feeding mechanism, a spot welding mechanism, a blanking mechanism, a drawstring feeding mechanism and a control panel, the conveying mechanism comprises a roller frame and supporting legs, the feeding mechanism comprises a vertical frame, a driving roller, a limiting wheel, a pressurizing wheel and a pressurizing cylinder, and the working table is arranged on the working table. The spot welding mechanism comprises a machine body, an upper spot welding component and a lower spot welding component, the structure and the installation mode of the discharging mechanism are the same as those of the feeding mechanism, and the drawstring feeding mechanism comprises a stock bin, an installation frame and a drawstring feeding component. According to the automatic spot welding machine, the conveying mechanism, the workbench, the feeding mechanism, the spot welding mechanism, the discharging mechanism, the drawstring feeding mechanism and the control panel are combined for use, manual participation is little in the welding process, the welding position is accurate, the labor cost is reduced, and the welding efficiency is greatly improved.

The invention discloses electronic detonator spot welding defect detection equipment which comprises a bottom bearing plate, a telescopic fixing structure is arranged at the upper end of the bottom bearing plate, a circulating feeding structure is arranged in the telescopic fixing structure, and a testing structure is arranged at the upper end of the telescopic fixing structure. The telescopic fixing structure comprises side supporting plates symmetrically and fixedly arranged on the top face of the bottom bearing plate. According to the electronic detonator spot welding defect detection equipment provided by the invention, the telescopic fixing structure is arranged, and two groups of transverse electric push rods which are symmetrically arranged drive clamping plates at the upper ends to get close to each other, so that electronic detonator control plates with different sizes on the surface of the top plate can be fixed; and meanwhile, a longitudinal electric push rod is matched to drive a test meter and a test needle head on the top to descend to be in contact with a welding spot on the surface of the control panel, so that whether the welding spot has pseudo soldering or not can be detected, compared with an existing detection device, the detection efficiency of the control panel can be effectively improved, and meanwhile higher adaptability is achieved for control panels of different sizes.

The invention relates to a manufacturing method of a medium and large size double-layer stainless steel thick plate complex curved surface structural member. The manufacturing method comprises the following steps: respectively forming an outer shell, an inner shell, a rib plate, a supporting column and a taper sleeve; the four side faces of the peripheries of the inner shell and the outer shell, welding grooves and supporting column mounting holes are machined, welding grooves of rib plates are machined, and the rib plates comprise outer rib plates close to the outer side and T-shaped rib plates located inside; a T-shaped rib plate is welded on the inner side surface of the inner shell; carrying out low-temperature annealing treatment on the welded inner shell and the T-shaped rib plate; a taper sleeve is welded on the inner shell, and then a shielding block is welded on the taper sleeve; finish machining is conducted on a groove, welded to the shell, of the T-shaped rib plate; riveting the shell and the supporting column, and fixing by spot welding; welding the shell and the supporting column, firstly performing backing weld by using laser welding, and then performing filling by using TIG (Tungsten Inert Gas) welding; vibration aging; by means of the method, the welding efficiency is improved, welding deformation is reduced, and the overall profile precision is guaranteed.

The invention relates to the technical field of bicycle frame welding, in particular to a welding tool for bicycle frame production, which is characterized in that a triangular base plate is provided with a mounting mechanism and a positioning mechanism, and the mounting mechanism and the positioning mechanism are jointly provided with a locking mechanism; spot welding machining can be replaced, all parts of the front triangular frame can be directly, stably and preliminarily positioned and formed, and welding equipment can directly conduct fish scale pattern welding on the attaching positions of all the parts; through the adjusting assembly in the positioning mechanism, the angle of the clamping assembly can be quickly and stably adjusted, and meanwhile, different triangular base plates are matched, so that the positioning requirements of all matched parts of the front triangular frame can be met; through cooperation of the locking mechanism, the mounting mechanism and the positioning mechanism, all parts of the front triangular frame can be synchronously and rapidly locked and stably fastened, and meanwhile after all the parts are welded and formed, the parts can be rapidly and synchronously unlocked.

The invention relates to the field of automobile part machining, and discloses an automatic welding device for a light automobile axle housing rear cover, a first roller conveyor is arranged to convey an axle housing main body and a rear cover which are connected together through spot welding, so that the axle housing main body enters a position on a bearing plate to stop conveying; then, a jacking air cylinder stretches to drive a lifting plate, a rotating shaft and a bearing plate to vertically ascend along a sliding rod to jack up the axle housing main body workpiece till a rear cover is tightly attached to the concave position of a fixing block, then a micro motor drives a second gear to rotate, and therefore a first gear, the rotating shaft and the bearing plate are driven to rotate for welding work, and people do not need to rotate around the axle housing main body for welding; after external welding is completed, the micro motor stops rotating, the bearing plate is made to be distributed in an original cross shape, the jacking air cylinder shrinks to drive the bearing plate to return to the original position, and at the moment, the first roller conveyor is started to convey the workpiece to the overturning station. The device has the advantages and effects that automatic overturning of the axle housing is achieved, manual rotating ring welding is not needed, and welding is rapid and efficient.

The utility model discloses a normally open solenoid valve for an automobile multi-cavity air spring, which comprises a shell, a framework arranged in the shell, an enameled wire wound on the outer side of the framework, a magnetism isolating tube arranged in an inner hole in the middle of the framework, a movable iron core arranged in the magnetism isolating tube, and a cushion block assembly arranged between the magnetism isolating tube and the end part of the movable iron core, an electrical interface is installed at the end of the shell, a valve seat is installed at the second axial end of the shell, a base is installed between the valve seat and the framework, an ejector rod piece capable of moving axially is arranged at the position, corresponding to the valve port, between the base and the valve seat, the first end of the ejector rod piece penetrates through the base to abut against the movable iron core, and a connecting socket is arranged at the end of the framework. The connecting socket is connected with a PIN needle in the electrical interface, a limiting claw is arranged at the side end of the PIN needle, and after the limiting claw is bent, the enameled wire is pressed and fixed on the PIN needle and is subjected to spot welding. The electromagnetic valve can solve the problems that an electric power connection structure of an existing electromagnetic valve is complex, and power connection is not reliable.

The invention relates to a self-walking type spot welding robot and a control method thereof, the structure comprises a welding robot main body, a walking device and a control system, the welding robot main body adopts a six-degree-of-freedom industrial robot, and an end effector is a welding gun; the walking device comprises a chassis and crawler wheels arranged on the two sides of the chassis, each crawler wheel comprises a crawler, a guide wheel, a driving wheel and a planet wheel, and the guide wheels, the driving wheels and the planet wheels are arranged in the crawler in a non-equilateral triangle mode. Magnetic sheets which are sequentially arranged in the walking direction are arranged in the crawler belt, and the crawler belt wheels are controlled to walk on the steel structure by sequentially electrifying the magnetic sheets; the control system comprises a demonstrator, and a welding seam tracking system, a welding controller and a motion controller which are in signal connection with the demonstrator; the welding seam tracking system adopts a visual sensor to track a welding seam; the welding controller controls the welding gun to perform spot welding; the motion controller controls on-off of the magnetic sheet. Free walking of the welding robot on the steel structure can be achieved, and remote control is achieved.

The invention discloses a tin wire feeding mechanism for sawtooth spot welding. The tin wire feeding mechanism comprises a mounting base; the tin inlet guide seat, the first conveying wheel set, the middle guide seat, the second conveying wheel set and the tin outlet guide seat are arranged on the mounting base from top to bottom, and the first conveying wheel set and the second conveying wheel set are meshed and linked through a gear shaft; the discharging frame is positioned on the upper side of the mounting base; wherein the first conveying wheel set comprises a first driving wheel meshed with the upper portion of the gear shaft; the first driven wheel is used for clamping and conveying the tin wire corresponding to the first driving wheel; wherein the first driven wheel is in shaft connection with an indexing turntable rotating along with the first driven wheel, and the indexing turntable is provided with eight notches formed in an array mode; and the photoelectric sensors are mounted on two sides of the indexing turntable through brackets and correspond to the notches. Tin wires are discharged through the tin inlet guide seat, the first conveying wheel set is matched with the second conveying wheel set, the tin wires are continuously output through the tin outlet guide seat, meanwhile, the indexing turntable induces the tin outlet length, discharging is accurately positioned, and the trouble that tin wire feeding is difficult to control in the past is avoided.

The invention belongs to the technical field of welding assistance, and particularly discloses an automobile part welding, clamping and positioning device which comprises a speed type spot welding control mechanism, a tracking welding mechanism, a rotating mechanism and a bottom plate, the tracking welding mechanism comprises sliding assemblies and a translation sliding plate, and the sliding assemblies are symmetrically arranged on the bottom plate; the translation sliding plate is arranged on the sliding assembly, and the rotating mechanism is arranged on the bottom plate. The speed type spot welding control mechanism and the tracking welding mechanism are creatively provided, and the welding track can be automatically controlled under the condition that the outline of a part does not need to be input in advance through an active control freedom degree and a follow-up motion freedom degree; in addition, through control over the rotating speed, opening and closing of a welding circuit can be automatically controlled, and therefore the technical effect of spot welding is automatically achieved.

The utility model provides a charge coupled device (CCD) tin wire soldering machine, which relates to the technical field of tin wire soldering machines and comprises a machine body, and a support base is fixedly mounted at the bottom end of the machine body. By arranging the machine body, the supporting base, the working platform, the drawer, the lamplight plate, the illuminating lamp, the camera, the lead screw module, the base plate, the Y-direction movement shaft, the Z-direction lead screw, the Z-direction servo motor, the upper silver guide rail and the like, when the equipment is used, manual labor can be effectively solved, manual operation and certain technical errors are reduced, and the production efficiency is improved. And meanwhile, by arranging the fixing plate, the front arm and other structures, any position needing to be welded can be adjusted, and automation and intellectualization are achieved in the welding process. And meanwhile, the welding has the functions of flexible and diversified tin soldering modes, spot welding, drag welding and the like so as to adapt to various high, medium and low-difficulty tin soldering operations, so that the welding quality is improved.

The invention discloses a green laser and a laser welding machine. The green laser comprises a pumping source, a first reflector, a laser crystal, a polarization beam splitter, a second reflector, a frequency doubling crystal, a telescope lens group and a spectroscope; the pumping source provides pulse pumping light; the laser crystal absorbs the pulse pump light to generate fundamental frequency laser in an infrared band, the fundamental frequency laser enters the polarization beam splitter and is split into P polarized light and S polarized light, the P polarized light is transmitted out of the resonant cavity, and the S polarized light is transmitted in the resonant cavity; and the telescope lens group converges the fundamental frequency laser to the frequency doubling crystal to generate frequency doubling laser of a green light wave band, and the frequency doubling laser is transmitted by the spectroscope and then is output. The green laser is used for spot welding of high-reflection materials such as copper and aluminum, the maximum single pulse energy can reach 5 J, the maximum peak power is 2 kW, the pulse width ranges from 0.05 ms to 5 ms, the problem of low absorption of the high-reflection materials to laser in the 1-micron wave band is solved, and the green laser is an edge tool for precise spot welding of the high-reflection materials.

The invention relates to the technical field of truss welding, and particularly discloses truss welding equipment which comprises a workbench, and supporting tables are fixedly mounted on the two sides of the top of the workbench correspondingly. The workbench comprises a horizontal moving mechanism used for horizontal movement, a feeding mechanism used for feeding, a clamping and fixing mechanism used for clamping and fixing, a supporting mechanism used for supporting, an angle adjusting mechanism used for adjusting the angle and a protection mechanism used for protection, and the angle adjusting mechanism comprises a servo motor. The servo motor is fixedly connected to one side of the L-shaped plate, an output shaft of the servo motor is fixedly sleeved with a small gear, and a gear ring is installed on the outer surface of the small gear in a meshed mode. When the angle of the spot welding gun is adjusted, a worker can adjust the spot welding gun at multiple angles through the angle adjusting mechanism, so that the spot welding gun adapts to truss structures of different shapes and sizes, various complex welding requirements are met, the accuracy of the welding position is ensured, the welding precision is greatly improved, and the universality of the device is improved.

The invention relates to the technical field of welding machining, and particularly discloses an elevator door plate spot welding machining device which comprises a bottom frame, a straight plate is fixedly connected to the right side of the top of the bottom frame, a sliding plate is slidably connected to the top of the straight plate, and a welding assembly is arranged on the left side of the sliding plate and comprises a connecting frame fixedly connected to the left side of the sliding plate. Sliding grooves are formed in the top and bottom ends of the left portion of the connecting frame, sliding plates are slidably connected into the sliding grooves, bent frames are arranged on the left sides of the sliding plates, rotating rods are rotatably connected to the left sides of the interiors of the bent frames, mounting frames are fixedly connected to the outer walls of the rotating rods, laser heads are fixedly connected into the mounting frames, and racks are fixedly connected to the right sides of the two sliding plates. Through cooperation of the structure, the two laser heads can conduct spot welding in a symmetrical welding mode, deformation caused by welding seams can be offset through symmetrical welding, and therefore structural deformation and residual stress are reduced to the maximum extent, and the welding quality is improved.