2236 results about "Arc welding" patented technology

The invention discloses an electric arc dynamic self-adaptive control method and sensing system based on multi-modal sensing, and relates to the technical field of electric arc control. A multi-modal sensor integrated on a welding gun is used for synchronously collecting an electric arc form image, a molten pool area image, a molten pool oscillation sound signal and current and voltage multi-dimensional data; the collected data are preprocessed, and real-time parameters in the welding process are extracted; calculating and outputting an optimal welding control parameter in real time by combining a depth Q model and taking the welding quality as an optimization target; the control parameters are transmitted to a welding actuator, real-time adjustment of the welding process is completed, and real-time control over the welding arc is achieved; the control method can be used for enhancing the real-time self-adaption of a welding control system to complex welding components and the flexible manufacturing capacity of replacing a product line; the technical problems that in an existing automatic electric arc welding control method, electric arc welding information collection is single, control response is delayed, the flexible degree is low, and welding feature extraction errors are large are solved.

The invention discloses an automatic welding device for a rotary alloy furnace tube, and belongs to the technical field of arc welding equipment.The automatic welding device for the rotary alloy furnace tube comprises a base and a U-shaped bin located at the top of the base, and the two ends of the interior of the U-shaped bin are jointly provided with a centering clamping mechanism used for clamping the outer side of the furnace tube; a driving mechanism for providing power for the centering clamping mechanism to clamp the furnace tube is arranged on the outer side of the centering clamping mechanism, and a welding mechanism is arranged on the inner top of the U-shaped bin. A local sealing design is adopted for the inflation mechanism, the annular air bag is attached to the inner wall of the furnace tube after being inflated, an independent cavity communicated with the outside only through a welding seam gap is formed near the welding seam, the protection requirement can be met only by filling the local space with argon, the whole furnace tube or a large-range external space does not need to be filled, and compared with traditional overall argon filling, the argon filling efficiency is greatly improved. The argon consumption is greatly reduced, the industrial gas purchase cost is remarkably reduced, and the production cost investment is reduced.

The invention discloses arc-shaped plate welding equipment for tunnel construction with a rapid positioning function, and relates to the technical field of welding, the arc-shaped plate welding equipment comprises a welding supporting mechanism and a welding device mounted at the top of the welding supporting mechanism, and a movable supporting mechanism is arranged at the bottom of the welding supporting mechanism; lifting threaded supports are symmetrically arranged on the top of the movable supporting mechanism, the welding supporting mechanism comprises a supporting support, an adjusting motor is fixedly installed on one side of the interior of the supporting support, and the output end of the adjusting motor is fixedly connected with a first chain wheel transmission assembly. Adjusting two-way threaded rods are symmetrically connected to one side of the first chain wheel transmission assembly, adjustment can be conducted according to the pressing condition of an arc-shaped plate, the pressing stability of the arc-shaped plate is improved, the welding device can be correspondingly moved according to the bending radian of a bendable steel plate by means of the characteristic of sliding connection between a limiting groove and a second limiting sliding block, and the welding efficiency is improved. And link track movement can be accurately carried out, and the welding stability is improved.

The present invention relates to the technical field of screw welding processing, and discloses an automatic arc welding machine for processing countersunk small self-drilling cement screws, including an operating platform and a manipulator for taking screws, and a welding gun for welding screws and plates, a shell is installed on the upper side of the operating platform, a support frame for transmitting screws is installed inside the shell, first grooves for placing screws are symmetrically opened on both sides of the support frame, a movable frame for progressive screws is movably installed between the operating platforms, a driving motor for driving the movable frame to move is installed on the side wall of the support frame, a support table is installed on the upper side of the operating platform, a detection head for checking the alignment of the screws is installed on the side of the support table, and a conversion seat for adjusting the alignment of the screws is installed on the upper side of the operating platform. After the manipulator takes the screws and docks them with the metal plate, a welding gun is used to weld them, thereby realizing automatic welding, reducing labor costs, and improving production efficiency and welding quality.

The utility model relates to the technical field of argon arc welding clamps, in particular to an angle-adjustable argon arc welding clamp for an air inlet cover, which comprises a cylindrical base. Two annular sliding grooves are symmetrically formed in the side curved surface of the cylindrical base up and down, a first torsion assembly and a second torsion assembly are installed on the outer side walls of the two sliding rings through supporting plates correspondingly, the acting end of a plug pin assembly can be plugged into a corresponding pin hole, and the first torsion assembly comprises a first electric telescopic rod; a first swing locking assembly is installed on the first damping rotating shaft, a second swing locking assembly is installed on the second electric telescopic rod, and the swing angle between the second electric telescopic rod and the first electric telescopic rod is adjusted through the first swing locking assembly. And a second swing locking assembly can adjust the swing angle between the clamping assembly and a second electric telescopic rod, the angle adjusting effect is achieved through cooperation, and the argon arc welding clamp can freely move in a certain range space and is more convenient to use compared with a traditional argon arc welding clamp.

A corrugated copper submarine cable and a submarine cable production device. The submarine cable production device comprises a worktable, and further comprises: a fixing compartment arranged in the middle of the upper surface of the worktable, wherein a fixing pipe penetrates the interior of the fixing compartment, a winding assembly is arranged on the circumferential surface of one end of the fixing pipe, and the winding assembly comprises a rotating ring rotatably arranged on the circumferential surface of the fixing pipe; and a welding compartment arranged on one side of the fixing compartment, wherein two support frames are arranged in the welding compartment, the top ends of the two support frames are both fixedly connected to limiting rings, a positioning ring is rotatably arranged between the two limiting rings, the inner wall of the positioning ring is fixedly connected to a plurality of arc welding heads, and the plurality of arc welding heads are distributed in a circumferential array along the inner wall of the positioning ring. By providing a welding assembly, the present invention solves the problem of reduced production efficiency of corrugated copper submarine cables caused by a relatively slow welding speed and low efficiency during normal welding in which welding is performed by a large number of technicians to generate corrugated textures.

The electric arc welding robot for automobile part machining comprises a platform, a transfer trolley used for bearing parts is arranged on the front side of the platform, welding parts are supported on the top of the transfer trolley, an electric arc welding machine base is fixedly connected to the top of the platform, a first mechanical arm is installed on the surface of the electric arc welding machine base, and a second mechanical arm is installed on the surface of the first mechanical arm. A second mechanical arm is installed at the end, away from the electric arc welding machine base, of the first mechanical arm, and a welding module is installed at the end, away from the first mechanical arm, of the second mechanical arm. By arranging the positioning structure, welding parts can be rapidly extruded and fixed, and the problems that an existing welding robot clamp is single in structure, low in clamping efficiency, tedious in operation and high in equipment complexity and maintenance difficulty, and the welding quality is affected by clamp precision and stability are solved; and the problem that the environment and the health of operators are threatened due to the fact that smoke cannot be effectively removed in the welding process is also solved.

The invention relates to the technical field of welding methods, and particularly discloses an intelligent argon arc welding method and system for automobile parts. Calculating a welding abnormal coefficient; whether the welding quality of the weld joint in the detection period is qualified or not is evaluated, and a period quality evaluation signal is generated; generating an abnormal welding alarm based on the periodic quality disqualification signal, and stopping the welding operation; the completed time period in the welding process is analyzed, whether fluctuation of the welding parameters is related to the welding quality or not during welding is evaluated, and a related evaluation signal is generated; on the basis of the associated signals and the fluctuation of the welding parameters during welding, the duration of the detection period is regulated and controlled; according to the method, the production efficiency and the product quality are improved, the cost and the error rate of manual intervention are reduced, in addition, the system can respond to welding quality abnormities more timely through the function of dynamically regulating and controlling the detection period, and therefore the stability and the reliability of the overall welding quality are further improved.

The invention discloses a method for reducing pores by repair welding of internal defects of a thin-wall aluminum alloy casting. The method comprises the following steps: confirming and marking X-ray positions of the internal defects of the aluminum alloy casting; internal defects at the marked position are cleaned, the defects are required to be completely eliminated, and the cleaning position is smooth and has a certain groove angle; cleaning oil stains and oxidation films at the repair welding position of the casting; preheating the whole casting; welding a reverse support and adding a blowing protection tool; manual argon arc welding filling surfacing is carried out, arc surfacing is carried out from the periphery to the center, and excess weld metal is reserved; removing redundant weld joint materials of surfacing bulges of the casting; x-ray detection is conducted on the repaired casting, whether the pore defects generated after surfacing repair can meet related requirements or not is emphatically confirmed, and if pores gathered on the surface layer of a weld joint exist, the pores can be discharged through a hot pressing method. According to the method, through hole internal defect cleaning, reverse supporting, blowing protection increasing and arc drawing surfacing methods are adopted for conducting surfacing repairing on the internal defects of the casting, the quality of aluminum alloy casting products is guaranteed, and the rejection rate and the production cost are reduced.

The invention discloses an arc welding robot welding monitoring system and method based on visual sensing, relates to the technical field of welding monitoring, and solves the technical problem that the welding quality is difficult to guarantee due to the lack of effective means for accurately acquiring welding parameters and detecting welding defects in real time. The welding abnormity analysis unit can quickly analyze welding abnormity signals, accurately identify welding defects and abnormal areas, summarize abnormal modes by searching similar areas, provide data support for formulating prevention and improvement measures, and meanwhile, can calculate voltage and current parameters corresponding to the abnormal areas according to the characteristics of a molten pool, so that the welding quality is improved. And the similar areas are adjusted and periodically monitored. When the adjusting effect does not meet the welding standard, the parameter adjusting and analyzing unit can further calculate the difference value and generate parameter adjusting information, accurate adjustment of welding parameters is achieved, the problem that traditional welding abnormity processing is not timely and inaccurate is solved, and the welding quality and the production efficiency are improved.

The invention relates to the technical field of hub machining, in particular to a rim and spoke welding device which comprises a rotating mechanism, a workbench, an inner pressing mechanism, a horizontal pulling mechanism, an upper positioning seat, a lower positioning seat and two vertical guide plates, and the two vertical guide plates are fixedly mounted on a rotating seat of the rotating mechanism. When the automatic electric arc welding device is matched with a manipulator to carry out automatic electric arc welding, manual intervention is not needed during overturning, the upper positioning seat or the lower positioning seat above the hub automatically moves to the inserting rod during welding, no shielding exists above the hub, and the manipulator can carry out welding conveniently. In addition, during welding, the upper positioning seat and the lower positioning seat clamp the hub, then during overturning, due to positioning of the clamping ring, shaking is avoided in the overturning process, after overturning is completed, the hub is automatically positioned by the upper positioning seat or the lower positioning seat, and a mechanical arm can accurately conduct welding. And when the upper positioning seat and the lower positioning seat rotate, no obstacle exists, and collision cannot occur.

The invention relates to the technical field of welding equipment, in particular to automatic welding equipment for metal cover machining, which comprises a welding worktable, an automatic welding mechanism and a supporting plate, the automatic welding mechanism is positioned on the outer side of the welding worktable, the supporting plate is positioned above the welding worktable, and four moving ports are formed in the supporting plate. Moving plates are arranged at the four moving openings in a sliding and penetrating manner; a synchronizing mechanism for synchronously adjusting the relative positions of the four moving plates is arranged at the bottom of the supporting plate; according to the automatic welding equipment for metal cover machining, the collecting mechanism is arranged at the clamping plate, and the guiding-out mechanism is arranged on the welding workbench, so that when a metal cover is welded, smoke dust generated at the welding position can be rapidly collected; meanwhile, according to the collecting mechanism, the smoke collecting mode can be adjusted according to the requirements of spot welding or arc welding, then the smoke collecting efficiency is guaranteed, and the situation that the welding quality is affected by sundries accumulated in the welding process is effectively prevented.

The invention belongs to the technical field of welding, discloses an electric arc welding process defect identification method based on multi-sensor information, and provides an electric arc welding process defect monitoring system based on welding process multi-sensor information. According to the system, current signals, temperature signals and visual image signals in the welding process are collected, the information theory and machine learning are combined, and real-time recognition of welding defects is achieved. The system aims at solving the problems of massive high-dimensional data volume generated by multi-sensor information fusion, rapid solving of appropriate model parameters and the like in a traditional welding defect detection method, and provides a welding defect identification method combining a mutual information method and a particle swarm optimization algorithm-least square support vector machine. Feature selection is carried out on multi-source sensing high-dimensional data through a mutual information method, optimization training is carried out on a particle swarm optimization algorithm-least square support vector machine model by utilizing a simplified data set, and a classification model established by the method has the characteristics of low complexity, short training and prediction time, relatively strong generalization ability and the like.

The invention provides a swing control method based on molten pool oscillation multi-feature fusion and related equipment, and relates to the technical field of welding, the method comprises the steps that in the argon arc welding process, an electric arc signal and a molten pool oscillation signal of a variable wall thickness welding area are collected in real time; oscillation amplitude, main frequency characteristics, current fluctuation coefficients and voltage-current phase difference characteristics are extracted from the molten pool oscillation signals and the electric arc signals and combined, and an oscillation comprehensive characteristic matrix is obtained; inputting the oscillation comprehensive characteristic matrix into a pre-trained classification model, and identifying a current molten pool state type; a corresponding swing compensation strategy is matched according to the state type of the molten pool, and asymmetric swing parameters are generated; and the asymmetric swing parameters and a preset basic welding track are subjected to superposition operation, and a composite control instruction is generated to control a welding gun to execute asymmetric swing welding. By implementing the method, different abnormal states of different molten pools can be subjected to differential control, and the stability of the variable-wall-thickness welding process and the forming quality of a final weld joint are improved.

The invention relates to the technical field of pipeline splicing and welding, and discloses a rapid splicing and welding device for a large pipeline in a narrow space, which comprises a base, a butt joint assembly is arranged on the upper part of the base, a lower hoop plate is arranged on the outer surface of the butt joint assembly, and an upper hoop plate is arranged on the upper part of the lower hoop plate; an automatic electric arc welding mechanism is arranged in the driving assembly, the butt joint assembly comprises a support fixedly connected to the upper surface of the base, a lead screw is slidably inserted into the middle of the support in a penetrating mode, and the end of the lead screw is fixedly connected with the side edge of the lower hoop plate. The pipeline is locked through splicing of the upper hoop plate and the lower hoop plate, bidirectional extrusion force is generated through cooperation of the inclined butt joint groove and the butt joint block, the pipeline is synchronously held by the upper hoop plate and the lower hoop plate, after the ends of the hoop plates are aligned, the pipeline is accurately arranged in the circular hoop in a sleeved mode, misalignment caused by gravity sagging is effectively eliminated, concentric alignment of the welding ends is rapidly completed, and the welding efficiency is improved. And the assembly precision and efficiency are improved.

The utility model discloses a prefabricated pipeline butt welding robot mechanism which comprises two sets of guide rails arranged on the ground in parallel, a roller carrier, a headstock positioner, a tailstock positioner, a supporting frame, a pneumatic manipulator, a three-axis mechanical arm and a working platform, two sets of cross-shaped sliding frames are arranged on the working platform, a gas shielded welding gun is installed on one set of cross-shaped sliding frames, and a gas shielded welding gun is installed on the other set of cross-shaped sliding frames. An argon arc welding gun is installed on the other set of cross-shaped sliding frame, a visual identification mechanism is arranged on the working platform and located between the two sets of cross-shaped sliding frames, and the headstock positioner comprises a first left-right moving mechanism, a first lifting mechanism and a rotating mechanism. The slewing mechanism is used for clamping a flange connected with the front end of the main pipeline and can drive the flange and the main pipeline to rotate, and the tailstock positioner can adjust the position and the height of the rear end of the main pipeline. The problems that automatic welding is high in requirements for pipeline assembly gap and alignment tolerance control and high in labor intensity are solved.

The utility model discloses a welding work fixture for electric arc welding, which relates to the technical field of welding auxiliary instruments and comprises a bottom plate, an adjusting groove is arranged on the upper side of the bottom plate, an adjusting component is slidably mounted in the adjusting groove and comprises two adjusting blocks, and the two adjusting blocks are slidably mounted in the adjusting groove. Two adjusting blocks are arranged on the upper side of the bottom plate, clamp mechanisms are installed on the upper sides of the two adjusting blocks, a driving hole is formed in one side of the bottom plate, and a distance adjusting threaded rod is rotatably installed in the driving hole. The distance adjusting threaded rod drives the two adjusting blocks to get close to each other, so that the two welding materials are attached to each other, and finally the welding materials are welded, so that the welding materials with irregular surfaces are attached and clamped, the effect of clamping the different welding materials is achieved, and the applicability of the device is improved.

The invention discloses a milling cutter workpiece feeding device of a milling cutter welding machine, and relates to the technical field of milling cutter welding. By arranging the rotary table, the multiple milling cutter clamping assemblies and the feeding control assemblies, when the rotary table rotates, each milling cutter clamping assembly can load the milling cutter assemblies to sequentially pass through the feeding control assemblies at multiple positions, and when the milling cutter clamping assemblies meet the feeding control assemblies, the milling cutter assemblies can be loaded on the feeding control assemblies to sequentially pass through the feeding control assemblies at multiple positions; the feeding control assembly can be triggered and control the blade to be automatically assembled to the cutter groove, and after the blade and the cutter groove are assembled, the electric arc welding mechanical arm can be automatically controlled to weld the blade according to a preset program. After one feeding control assembly completes welding, 120-degree overturning can be completed when the feeding control assembly meets the other feeding control assembly, blade welding operation can be automatically conducted on the next cutter groove, and therefore automatic overturning of the milling cutter assembly, automatic assembly of the blade and the cutter groove and automatic switching of the welding position can be achieved; the purpose of automatically welding the milling cutter assembly is achieved.

A gate electric arc welding device belongs to the technical field of welding and aims to solve the problems of muscle fatigue and welding quality reduction caused by long-time holding of a welding gun by a user. The gate electric arc welding device comprises a welding machine, an air outlet assembly is arranged on one side of the welding machine, one end of the air outlet assembly is communicated with the welding gun, and two fixing sleeves are fixedly arranged on the outer ring of the welding gun; a plurality of inclined blocks are oppositely arranged on the two fixing sleeves, sliding assemblies are slidably arranged on the outer walls of the two fixing sleeves, fixing assemblies are slidably arranged on the outer walls of the sliding assemblies, moving assemblies are fixedly arranged on one sides of the fixing assemblies, acceleration sensors are installed on one sides of the moving assemblies, and two compensation assemblies oppositely communicate with the outer wall of the welding gun; a user can be conveniently assisted in pushing the welding gun for movable welding, so that the situation that the welding quality is reduced due to the fact that the user holds the welding gun by hand for a long time is avoided, and meanwhile, dynamic speed compensation can be conducted when the non-uniform-speed phenomenon occurs in the moving process of the welding gun, so that the welding gun is always kept in the uniform-speed welding state.

The invention relates to the technical field of argon arc welding machines, and discloses an argon arc welding machine with high-precision welding positioning, a supporting box is fixedly connected in a supporting table, an adsorption filtering box is fixedly connected to the top of the supporting box, a driving mechanism is arranged at the top of the supporting box, a positioning mechanism is arranged in the supporting box, and a dismounting mechanism is arranged on the outer side of the adsorption filtering box. The top of the supporting table is fixedly connected with an argon arc welding machine body. The clamping device has the characteristics of being high in practicability and stable in positioning, by arranging the positioning mechanism, the purpose of clamping and positioning a workpiece is achieved through synchronous movement of the pressing wheel and the positioning plate, and by means of matched driving of the first driving assembly and the second driving assembly, the two supporting rods which are symmetrical in the front-back direction can move and rotate; according to the clamping device for the argon arc welding machine body, the workpiece clamping stability is guaranteed, the conditions of deviation, shaking and the like are not prone to occurring in the workpiece machining process of the argon arc welding machine body, good machining quality is achieved, and further development of machining work of the argon arc welding machine body is facilitated.

The invention relates to a low-power pulse laser-induced enhanced double-TIG (Tungsten Inert Gas) composite heat source medium-thickness plate narrow-gap efficient welding method, which adopts two independent TIG welding machines, a pulse laser and a wire feeder, and two TIG welding guns are positioned in a narrow-gap groove on the same side of a plane on which a laser beam perpendicular to the plate welding direction is positioned, the angle and distance of each heat source can be independently adjusted, before welding, the space angle and distance among the two TIG welding guns, laser beams and welding wires are adjusted, tungsten electrodes at the front ends of the two TIG welding guns and the laser beams emitted by a laser device are arranged in the corresponding space range, and a plate to be welded and the welding wires can obtain sufficient heat for melting, wetting and spreading; during welding, welding parameters are adjusted, the coupling plasma energy density in the narrow gap space range is controlled, and the droplet transition behavior of a welding wire and the flow characteristic of a molten pool are adjusted and controlled in real time. Compared with traditional arc welding, the welding process window can be improved, and the welding deposition efficiency is improved by more than 10 times.

The invention relates to a welding system for a tank body, in particular to a P + T automatic welding system and method suitable for a square and round tank body, and aims at solving the problems that an existing circular seam welding method for the square and round tank body is tedious in step, consumes time and manpower, is poor in weld seam appearance forming and is high in repair rate. The system comprises a tank body clamping displacement assembly, a robot assembly and an AGV moving trolley. The tank body clamping displacement assembly comprises a displacement machine moving ground rail, two head and tail frame servo moving mechanisms arranged on the displacement machine moving ground rail, head and tail frame robot displacement machines arranged on the two head and tail frame servo moving mechanisms correspondingly, and a displacement machine control system electrically connected with the two head and tail frame servo moving mechanisms correspondingly. The robot assembly comprises a heavy-load robot moving ground rail and a welding robot. The two welding robots are each provided with a welding gun combination, and each welding gun combination comprises a plasma welding gun and an argon tungsten-arc welding gun.

The invention discloses a welding method for a nickel-based alloy composite board. The nickel-based alloy composite board comprises a base material layer and a nickel-based alloy composite material layer, and a transition layer is arranged at the bonding interface of the base material layer and the nickel-based alloy composite material layer. Wherein a trapezoidal groove is machined in the position, corresponding to the base material layer, of the welding section of the nickel-based alloy composite board; a U-shaped groove is machined in the position, corresponding to the transition layer, of the welding section of the nickel base alloy; a groove is not machined in the position, corresponding to the nickel-based alloy composite material layer, of the welding section of the nickel-based alloy composite plate; a nickel-based alloy welding wire matched with the nickel-based alloy composite material layer is used, single argon tungsten-arc welding is adopted for welding the nickel-based alloy composite material layer, and a composite material layer welding seam is formed; a nickel-based alloy welding wire matched with the nickel-based alloy composite material layer is used, the transition layer is welded through single argon tungsten-arc welding, and a transition layer welding seam is formed; and the base material layer is welded to form a base material layer welding seam, and double-tungsten-electrode argon arc welding is adopted for welding the first welding bead of the base material layer.

The invention relates to the field of electric arc welding, and discloses a method for monitoring TIG welding quality in real time based on a molten pool camera, and the method comprises the following steps: S100, obtaining an image of a welding area through the molten pool camera; s200, identifying a tungsten needle and a workpiece groove in the image, and calibrating imaging parameters of the image according to the actual size of the tungsten needle; s300, the relative position of the tail end of the tungsten needle and the workpiece groove is obtained, and the position of the tungsten needle is adjusted according to the relative position; s400, TIG welding is conducted on the groove of the workpiece, and a real-time image in the welding process is obtained through a molten pool camera; and S500, relevant welding data are obtained from the real-time image, the position state of a tungsten needle and a workpiece groove and / or the working state of a welding power source are / is controlled in real time according to the relevant welding data, welding is stopped and an alarm is given when the data exceed a set threshold value range, the change of welding parameters can be monitored in real time, and the quality of a welding seam is guaranteed. The invention further discloses welding equipment for monitoring the TIG welding quality in real time based on the molten pool camera.

The invention discloses a switch cabinet arc welding device capable of achieving multi-station switching and a machining method, and relates to the technical field of welding devices.The switch cabinet arc welding device comprises a machining bed, a multi-station switching mechanism is arranged above the machining bed, and a turnover mechanism is arranged above the machining bed; the multi-station switching mechanism can utilize a plurality of stations to improve the welding efficiency of the switch cabinet, the multi-station switching mechanism comprises a fixing box, the bottom face of the fixing box is fixedly connected to the inner bottom wall of the machining bed, the turnover mechanism comprises a limiting unit, and the limiting unit is arranged above the machining bed. According to the switch cabinet arc welding device capable of achieving multi-station switching and the machining method, the rotating unit is arranged, the switch cabinet welded with one or more gaps can be rotated through the rotating unit, the multi-station switching mechanism is arranged, and the limiting unit and the rotating unit are matched with each other, so that the situation that when the device is used, the switch cabinet is damaged is avoided; and the welding efficiency is low due to the fact that the number of stations is small.

The invention belongs to the field of argon arc welding devices, and particularly relates to an automatic device for circular tube butt-joint argon arc welding, which comprises a base, and a circular tube butt-joint positioning assembly is arranged on the base; the round pipe butt joint positioning assembly comprises a rotating plate rotationally arranged on one side of the upper end face of the base, two transverse moving columns are distributed on the upper end face of the rotating plate in a 90-degree array mode with the rotating shaft as the axis, the transverse moving columns are slidably connected to the rotating plate, and a connecting plate is fixedly connected to the upper end of the rotating plate. According to the round pipe butt joint device, automatic butt joint of round pipes is achieved through the round pipe butt joint positioning assembly, the round pipe feeding assembly, the orientation angle recognition assembly and the material moving assembly, the process that operators conduct manual butt joint on the round pipes is omitted, and the labor intensity is reduced. The orientation and the angle of the circular pipes are judged in a distance sensing mode, the two circular pipes are accurately adjusted to be at the proper angle, then it is guaranteed that the inclined faces of the two circular pipes are accurately attached, weld joint deviation is avoided, and therefore it is guaranteed that welding work is conducted smoothly.

The invention discloses a semi-solid ultrasonic rolling synchronous auxiliary electric arc additive manufacturing device and method, and the device comprises an ultrasonic rolling device, and further comprises an electric arc welding gun device, an automatic wire feeding device, a manipulator, a control system device, a protective gas cylinder and a clamp device. When semi-solid ultrasonic rolling synchronous auxiliary electric arc additive manufacturing is carried out, the electric arc welding gun is fixed to one mechanical arm, the synchronous ultrasonic rolling device is fixed to the other mechanical arm, and the two mechanical arms are controlled by the control system device to move synchronously. The invention provides a structure regulation and control method of applying ultrasound and rolling composite to a semi-solid area of an electric arc additive manufacturing near-molten pool, and utilizes stirring and cavitation effects of the ultrasound and a deformation-induced recovery recrystallization effect to promote escape of bubbles, effective welding of pores and full crushing and refining of dendritic crystals, so that the mechanical property of the electric arc additive manufacturing near-molten pool is improved. And finally, regulation and control of the compact equiaxed fine grain structure in electric arc additive manufacturing are achieved.

The utility model relates to the technical field of welding equipment, in particular to a three-phase arc welding power source which comprises a base, a protection box is fixedly installed on the top of the base, a power source body is arranged in the protection box, a plurality of heat dissipation strips are arranged at the bottom of the protection box, and a dustproof assembly used for shielding the heat dissipation strips is connected into the protection box in a sliding mode. A heat dissipation assembly used for conducting heat dissipation on the power source body is further arranged in the protection box. According to the device, through multiple heat dissipation modes, the power supply main body can operate more stably, the situation that the temperature in the protection box is too high, and consequently operation of the power supply main body breaks down is avoided, and during use, cold water generated by the cold water tank can continuously flow through the water cooling pipe to cool the interior of the protection box; and air generated by the fan can drive cold air generated by the water cooling pipe to move downwards, the power supply main body can be further cooled, and heat in the protection box can be further dissipated under the condition that the air box continuously works.

The present invention discloses a bridge welding device and a bridge welding method, which relate to the technical field of bridge welding. The following scheme is proposed, including a machine body and an electromagnet fixedly connected to the bottom of the machine body, and also including: a rotating swing adjustment mechanism, the rotating swing adjustment mechanism is installed inside the machine body, and is used to adjust the welding angle of the equipment, the rotating swing adjustment mechanism includes a connecting rod rotatably connected to the inside of the machine body and a worm gear fixedly connected to one side of the connecting rod; a moving mechanism, the moving mechanism is installed at one end of the connecting rod, and is used to automatically move the welding equipment for welding. The present invention can not only adjust the equipment to different welding bevel angles through the rotating swing adjustment mechanism, but also perform arc welding on the bridge through the angle flipping mechanism, and can also perform straight-line automatic long-distance arc welding, effectively ensuring the effect and efficiency of automatic and rapid welding of the bridge, and reducing the risk of manual high-altitude operations.

The invention discloses a building automation electric arc welding robot arm which comprises a mechanical arm body, a telescopic supporting column, an adjusting assembly and a welding mechanism, a rotating disc is rotatably arranged at the output end of the mechanical arm body, and the telescopic supporting column is fixedly arranged on the rotating disc; the welding mechanism is connected with the telescopic supporting column through the adjusting assembly, the adjusting assembly comprises a first deflection telescopic rod, a two-way telescopic rod, a second deflection telescopic rod and a driving assembly, the first deflection telescopic rod is rotationally connected with the telescopic supporting column in a limiting mode, and a hydraulic telescopic rod is hinged between the first deflection telescopic rod and the telescopic supporting column; the first deflection telescopic rod and the second deflection telescopic rod are rotationally arranged at the two ends of the bidirectional telescopic rod in a limited mode respectively, driving assemblies are arranged between the bidirectional telescopic rod and the first deflection telescopic rod and between the bidirectional telescopic rod and the second deflection telescopic rod, and the welding mechanism is rotationally arranged at the output end of the second deflection telescopic rod.