1174results about How to "Guarantee welding quality" patented technology

The invention discloses a weld joint key point recognition method, device and equipment, a medium and a program product, and the method comprises the steps: generating a data set based on training image data and annotation data, constructing an original recognition model, improving the original recognition model, and training and optimizing the improved original recognition model based on the data set. Obtaining a target recognition model; acquiring a depth image and an RGB image of the welding part through image acquisition equipment on the welding robot; the RGB image is input into the target recognition model for weld joint key point recognition, weld joint key point coordinates of the welding part are determined based on the recognition result and the depth image, accurate recognition of the weld joint key points is achieved, a welding robot is guided to accurately reach the weld joint key point coordinate positions for welding, key point recognition autonomy and adaptability are improved, and the welding quality is improved. And welding tasks with different requirements are effectively adapted, the welding efficiency is greatly improved while the welding quality is ensured, and the time cost is reduced.

The invention discloses a whole welding process quality regulation and control method of a welding robot, and relates to the technical field related to welding. The method at least comprises the steps that S1, a pre-welding parameter drawing technology is designed, welding numerical simulation analysis is conducted to predict optimal welding parameters, the optimal welding parameters are compared with a thermal cycle curve of a test, the accuracy of a model is verified, the predicted parameters are input into a welding robot, and the welding prediction effect is achieved; and S2, designing a welding molten pool regulation and control technology, collecting a molten pool image through an industrial camera, processing the collected molten pool image, then building a molten pool monitoring platform, and regulating and controlling the quality of the molten pool during welding through the platform. According to the method, a proper welding quality guarantee strategy of the welding robot is provided, and the welding quality of the welding robot is guaranteed in the whole process of pre-welding, during-welding and after-welding through the cooperative design of pre-welding parameter drawing-up based on the numerical simulation technology, during-welding molten pool monitoring based on camera recognition and after-welding quality study and judgment based on deep learning.

The invention relates to the technical field of robot welding, in particular to an industrial robot auxiliary welding device which comprises a mounting base. The welding unit is connected with the mounting base and is used for realizing multi-angle welding of the fixed workpiece; the circulating fixing unit is arranged on the outer side of the welding unit, is connected with the mounting base, and is used for independently supporting a plurality of workpieces and automatically fixing and unbinding the workpieces during station switching so as to realize circulating machining; wherein the circulating fixing unit comprises an induction type automatic fixing assembly, a self-locking type driving control assembly and an auxiliary cleaning assembly, by arranging the circulating fixing unit, a workpiece can be automatically fixed, constraint to the welded workpiece can be automatically relieved, feeding and discharging operation can be conveniently conducted, fixing does not need to be completed manually in the whole machining process, and the machining efficiency is improved. Manual operation procedures are reduced, and workpiece production efficiency is improved.

The invention discloses a method, a device and a welding system for laser welding of a battery pack pole and an integrated busbar. The method is applied to a welding system, and the method can be used for measuring the center point coordinates of each battery cell pole in a to-be-welded battery pack and the center point coordinates of each CCS corresponding to each battery cell pole one by one; comparing the center point coordinates of the battery cell poles with the center point coordinates of the corresponding CCS one by one, and judging whether the welding conditions are met or not; compressing each first CCS meeting the welding condition, measuring a first welding distance between the welding surface of each compressed first CCS and a preset calibration focus position, and generating a CCS height set based on each first welding distance; according to the method, whether each first welding distance in the CCS height set is equal to the preset calibrated welding distance or not is judged, each first CCS corresponding to the equal first welding distance is welded with the corresponding battery cell pole, manual and automatic welding is not needed, and the welding efficiency is improved.

The invention relates to the technical field of sheet processing, and discloses an edge rolling welding machine which comprises a base, a feeding mechanism, a rolling mechanism, a rounding mechanism, a material moving mechanism, a plate end positioning mechanism, a welding seam positioning mechanism, an embracing mechanism, an edge pressing mechanism and a welding mechanism. According to the edge rolling welding machine, the actions such as automatic feeding, edge rolling, transferring, positioning, welding seam determining, seam aligning and welding of sheets are achieved, manual intervention is not needed in the whole process, the edge rolling and welding quality is guaranteed, the automation degree of equipment is improved, and the machining efficiency and the forming consistency are remarkably improved.

The invention relates to the technical field of robot teaching-free welding, and particularly discloses a robot teaching-free welding system based on visual localization and a welding method.The robot teaching-free welding system comprises a PLC, a power module, a wireless communication module and a visual localization coordinate conversion module. The path planning optimization module directly generates a welding path according to a visual positioning result, tedious operation is reduced, the problem of poor dependence and adaptability on pre-stored data is solved, the visual acquisition module and the positioning module work cooperatively, workpiece position and posture information is updated in real time, and the positioning precision is improved. The teaching-free intelligent decision-making and optimization module is combined with real-time data to adjust a path and parameters, the image processing and path planning optimization module generates a proper path according to image information for a complex workpiece, the sensor fusion module fuses vision and other sensor data, the adaptability of the system to the complex workpiece is enhanced, and the welding quality is guaranteed.

The invention discloses a tunnel-type high-speed in-situ eutectic soldering station, chip mounting equipment and a chip mounting method. The device comprises a first supporting plate, a second supporting plate, a eutectic temperature control plate group and a supporting module, wherein the first supporting plate moves horizontally; the second supporting plate is arranged on the first supporting plate in an up-down moving manner; the eutectic temperature control plate group is arranged on the second supporting plate; the first driving module is arranged on the first supporting plate and drives the second supporting plate to move up and down; the second driving module drives the supporting module to move horizontally; the eutectic temperature control plate set comprises a preheating plate, an eutectic table and a cooling plate which are sequentially arranged in the movement direction of the base plate. The eutectic welding requirement of a plurality of chips on a single substrate can be met, and the chip mounting efficiency of an intensive circuit board is improved.

The invention relates to a repair welding repair method for casting defects of an equiaxed crystal high-temperature alloy structural part, belongs to the technical field of welding repair, and solves the problems that in the prior art, the repair welding success rate of the casting defects of the equiaxed crystal high-temperature alloy structural part is low, the repair welding result stability is poor, and the repair welding accessibility of local narrow parts is poor. The invention discloses a repair welding repair method for casting defects of an isometric crystal high-temperature alloy structural part. The repair welding repair method comprises the following steps that S1, defects are removed in a mechanical mode, and grooves are machined; s2, cleaning before welding; s3, the structural part is placed in a vacuum argon-filled welding box; s4, arc striking welding, wherein the welding process passes are arranged as follows: (1) after arc striking, 2-4 seconds are used firstly to enable the base metal to form a molten pool; (2) adding wires into the molten pool, and slowly feeding the wires; 3, welding spots are fully stacked through fractional wire feeding, and annular arc conveying is carried out; (4) the electric arc is slowly conveyed for a circle along the weld toe; (5) ending; and S5, performing fluorescence and X-ray detection after cooling. The casting defects of the isometric crystal high-temperature alloy structural part are efficiently and stably repaired.

The invention belongs to the technical field of bridge expansion joint welding, and particularly relates to a bridge expansion joint welding fixing device with a limiting mechanism, which comprises a welding seat, a processing seat fixed on the surface of the welding seat and bridge expansion joint profile steel attached to two sides of the surface of the processing seat, and a limiting assembly is mounted on the surface of the welding seat. The device is provided with the limiting assembly, the position of the bridge expansion joint profile steel can be effectively limited, it is guaranteed that the bridge expansion joint profile steel is kept in a stable state in the welding process, the welding quality can be better improved, and welding defects caused by position deviation of the bridge expansion joint profile steel are reduced; according to the bridge expansion joint profile steel limiting device, collision or damage caused by displacement of the bridge expansion joint profile steel is reduced, meanwhile, the bridge expansion joint profile steel is pressed and limited through the pressing plates at the four corners, limiting force can be applied to the bridge expansion joint profile steel in multiple directions, the overall limiting effect is enhanced, the profile steel can better resist external force interference in the welding process during welding, and the welding quality of the profile steel is improved. And smooth welding is ensured.

The invention relates to the technical field of laser welding, in particular to square tube laser welding equipment capable of eliminating moving, jumping and deviation and a welding method.The square tube laser welding equipment comprises lifting plates which are symmetrically arranged, and inclined blocks are fixed to the lifting plates; the translation assembly is arranged on the lifting plate, and a connecting plate is connected to the translation assembly; the lifting mechanism is arranged on the connecting plate, a rotating plate is connected to the lifting mechanism, a welding head is fixed to the end, away from the connecting plate, of the rotating plate, and the lifting mechanism can adjust the distance between the welding head and the connecting plate through the rotating plate; the follow-up rotating mechanism is arranged on the connecting plate and is connected with the lifting mechanism; and the impurity cleaning mechanism is arranged on the rotating plate, the spacing adjusting and controlling assembly is connected with symmetrically-arranged pressing wheels, and during welding, the square pipe can be fixed through the pressing wheels, so that the situation that the welding quality is poor due to the fact that the square pipe jumps in the welding process is prevented.

The invention discloses a conveying roller double-end-face welding device, and belongs to the technical field of welding equipment.The conveying roller double-end-face welding device comprises a mounting frame, and a rotating motor and a driving motor are fixedly mounted in the mounting frame; the welding mechanism comprises a welding gun, an adjusting mechanism and a guide rail connected to the front side of the adjusting mechanism; the pressing mechanism comprises a pressing plate, a first air cylinder, a linkage monitoring mechanism and two pressing wheels; and the welding seam monitoring mechanism comprises a monitoring plate, a monitoring wheel, a vertical plate, a vertical plate, a fixing plate and a pressure sensor. By means of the linkage monitoring mechanism, welding work can be stopped in time when it is monitored that loosening occurs during pressing and cleaning in the welding process, and the thickness and flatness of a welding seam can be monitored through the welding seam monitoring mechanism; and through the arranged inertia monitoring mechanism, welding work can be stopped in time to achieve positioning when welding seams are subjected to welding missing and welding lacking, troubleshooting and welding parameter adjustment are facilitated, and the welding quality is guaranteed.

The invention relates to the field of welding technology, and specifically discloses a welding device for producing angle steel towers, wherein the tower foot comprises a base plate and an angle steel vertically arranged on the base plate, a plurality of movable outer shells are installed on the base frame, a slag removal assembly is installed in the outer shell, a negative pressure machine and a collecting box are installed on the outer shell, the slag removal assembly comprises an inner shell that can move along the length direction of the outer shell, a plurality of slag removal rollers are installed in the inner shell along the length direction thereof in rotation at intervals, the slag removal rollers can clean the welding slag at the welding seam between the angle steel and the base plate, a slag conveying assembly for conveying the welding slag in the slag removal roller to the collecting box is installed in the slag removal roller, a slag removal part is rotatably installed at the end of the inner shell, the slag removal part can clean the welding slag close to the inner top angle of the angle steel, the slag removal part has air holes connected with the negative pressure machine, and when the air holes correspond to the welding seam, the negative pressure machine can suck the welding slag at the welding seam, and the invention is conducive to the efficient treatment of the welding slag on the welding seam surface of the tower foot to improve the welding quality.

The invention discloses a control method of an automatic welding robot and an electrical structure system, and relates to the technical field of electrical control. In order to solve the technical problems that in the prior art, when an existing welding robot deals with a complex welding task, welding path planning, welding current control, temperature adjustment, parameter self-adaptability, welding process monitoring and other aspects are insufficient, the technical scheme is provided, and the invention provides a control method of an automatic welding robot. Comprising the following steps that 1, physical property information of a welding material is collected; 2, data processing is conducted on the feature information, and a preliminary welding path and welding parameters are generated; 3, dynamically adjusting a welding path and welding current and voltage according to real-time data in the welding process; and 4, according to the real-time temperature of the monitored welding area, a cooling control signal is adjusted. The method is suitable for control work of the automatic welding robot.

The invention belongs to the technical field of automatic welding machines, and particularly relates to an automatic welding machine for a spiral drum of a coal mining machine, the automatic welding machine comprises a mounting frame, an operation panel and a PLC (programmable logic controller), the operation panel and the PLC are arranged on the lower side wall of the mounting frame, and a connecting frame is fixedly connected to the upper side wall of the mounting frame. When the spiral blade is welded to the surface of a roller, the spiral blade can be stably clamped in the welding process, the spiral blade is kept at the set position and angle all the time, the power and the welding speed of the welding machine are automatically adjusted according to the deformation direction of the spiral blade, the welding quality of the spiral blade is guaranteed, and the welding efficiency is improved. And the gravity distribution condition of the roller can be automatically detected, when it is detected that the gravity distribution of the roller is changed due to welding, an operator can be reminded in time to conduct balance weight leveling treatment on the roller, and the follow-up cutting efficiency and working stability of the spiral roller are guaranteed.

The invention discloses an automobile part welding workstation and belongs to the technical field of automobile part welding, a nut conveying mechanism is arranged on one side of a seventh supporting frame, a fastening rod conveying mechanism and a positioning mechanism are arranged on a second supporting plate, and the positioning mechanism positions fourth through holes, fastening rods and nuts of all corresponding automobile plates; the conveying robot mechanism clamps and conveys the automobile plate on the conveying belt and places the automobile plate on the positioning mechanism, the welding robot mechanism welds each nut with the automobile plate, the accuracy of the welding position is guaranteed, and the conveying robot mechanism clamps and conveys the welded automobile plate and places the welded automobile plate on the conveying belt for conveying and discharging. The welding nut is firmly connected on a plate, the strength and stability of the whole structure are enhanced, meanwhile, it is ensured that the nut is not prone to loosening in the using process, the risks of later maintenance and faults are reduced, the assembling time and steps are reduced, the labor cost is reduced, and the whole efficiency and quality of a welding work station are improved.

The invention discloses a high-strength steel pipeline full-angle welding device which comprises a fixed welding table, a pushing assembly is connected to the side wall of the fixed welding table, a movable welding table is connected to the pushing assembly, clamping mechanisms are connected to the table top of the movable welding table and the table top of the fixed welding table, and a driving mechanism is connected to the bottom face of the fixed welding table. Connecting holes are formed in the table surfaces of the movable welding table and the fixed welding table, and the driving mechanism penetrates through the connecting holes to be connected with the clamping mechanism. The invention further discloses a welding method of the high-strength steel pipeline all-angle welding device. Two to-be-welded high-strength steel pipeline workpieces are placed in the two clamp rings, the electric push rod pushes the clamping plates to extrude and fix the high-strength steel pipeline workpieces, the transmission gears are connected with the annular toothed plates outside the clamp rings to drive the two clamp rings to rotate, and rotation of the to-be-welded high-strength steel pipeline workpieces is achieved; in this way, 360-degree dead-corner-free welding operation is carried out on the welding butt joint position of the high-strength steel pipeline in the welding process.

The invention discloses a positioning and welding device for H-shaped steel stand column machining, and relates to the technical field of welding devices. A mounting seat is arranged on the mounting frame, and a positioning mechanism, a pressure adjusting mechanism and a welding mechanism are arranged on the mounting seat; the positioning mechanism is used for positioning and clamping the lining plate; the pressure adjusting mechanism is used for driving the H-shaped steel and the lining plate to rotate synchronously so as to adjust the welding pressure between the H-shaped steel and the lining plate. And the welding mechanism is used for moving along a welding seam between the H-shaped steel and the lining plate so as to carry out rotary welding. The pressure sensing mechanism is arranged, that is, the pressure adjusting mechanism drives the H-shaped steel and the lining plate to rotate, so that the lining plate is located below the H-shaped steel, the pressure between the H-shaped steel and the lining plate is increased through the weight of the H-shaped steel, deformation between the H-shaped steel and the lining plate during welding is prevented, and therefore the welding quality is guaranteed.

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 relates to the technical field of mechanical arms, and discloses a self-adaptive rapid assembly system and method for a laser radar, and the system comprises an acquisition module, a mechanical arm is provided with a clamping claw and a welding head; the control module is electrically connected with the acquisition module and the mechanical arm, and the control module comprises an acquisition unit which controls the mechanical arm to place a shell on a working plane and controls the mechanical arm to press a crimping stud into a crimping hole site; the judgment unit collects the image of the crimped shell to judge whether the plane is flush or not; when it is judged that the plane is flush, the processing unit controls the mechanical arm to clamp the mainboard module, and the crimping stud penetrates through a mounting hole position of the mainboard module; determining the amount of soldering tin, and controlling the welding head to fix the mainboard module; the adjusting unit collects image data of the welding position to judge whether welding defects exist or not, and when the defects exist, the welding head is controlled to conduct repair welding. Through the acquisition module, the mechanical arm and the control module, automation of laser radar assembly is realized, and the assembly precision is improved.

The invention is suitable for the technical field of welding equipment, and provides pipeline welding butt joint equipment for water diversion engineering, which comprises an equipment base, a support frame, an outer fixing sleeve and an inner fixing sleeve, and further comprises a fixing mechanism and a welding mechanism, the welding mechanism comprises an assembling mechanism, a welding gun and a control mechanism. According to the pipeline welding butt-joint equipment for the water diversion engineering, modular design is adopted, in the construction operation process in a region lack of electric power, the two inner fixing sleeves independently conduct centering clamping and fixing on the two pipelines needing to be in butt joint through the fixing mechanisms, the butt-joint precision of the two pipelines is ensured, and the butt-joint efficiency of the two pipelines is improved. The control mechanism is matched with the assembling mechanism, so that the welding gun can be accurately aligned to the butt joint of the two pipelines, the butt joint of the two pipelines can be effectively and fully welded, and the welding quality of the welding gun to the pipelines is ensured.

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 invention relates to the technical field of automobile part machining, and discloses an automobile part machining welding device which comprises a base, a welding cover fixedly connected to the top of the base, a discharging plate fixedly connected to the top of the base, a welding mechanism arranged at the top of the base and a cleaning mechanism arranged at the top of the base. A collecting mechanism is arranged at the bottom of the base, a connecting column is rotatably connected to the top of the welding cover, a motor is arranged on the connecting column, a protective arc plate is slidably connected to the circumferential surface of the welding cover, and an anti-collision cover is fixedly connected to the top of the base. The welding quality is guaranteed, the welding deviation is reduced, meanwhile, sparks generated in the welding process cannot make contact with other objects due to the arrangement of the welding cover, the safety of the device in the welding process is further protected, and the frequency of accidents in the welding process is reduced.

The invention relates to the technical field of laser welding, and discloses a laser welding machine for gas barbecue oven machining, which comprises a welding box, a first box door is hinged to the front surface of the welding box, a second box door is hinged to the back of the welding box, a welding platform is fixedly connected to the interior of the welding box, and a collecting groove is formed in the welding platform. A collecting box is slidably connected into the collecting groove, the front face of the welding platform is obliquely arranged in a slope mode, sweeps on the top of the barbecue oven can be blown away through an air blowing pipe so that the sweeps can slide to the slope of the welding platform, a brush can blow away the sweeps on the slope, and therefore cleaning of the welding sweeps is achieved. And the interior of the transverse groove is knocked through the knocking ball, so that falling of scraps on the inclined face of the welding platform can be accelerated, scrap cleaning is achieved, the probability of generation of welding defects such as air holes and slag inclusion can be reduced through scrap cleaning, welding seams are more uniform and compact, and the welding quality is guaranteed.

The invention discloses AI automatic laser spot welding detection packaging equipment, and relates to the field of laser spot welding, the AI automatic laser spot welding detection packaging equipment comprises a control base, the upper end of the control base is connected with a laser welding mechanism, a bracket is fixed on the side surface of the control base, a rotating shaft is rotatably connected in the bracket, rotating rollers are fixed outside the rotating shaft, and a crawler belt is connected between the two rotating rollers; a plurality of clamping mechanisms arranged at equal intervals are fixed to the crawler belt, through grooves are formed in the positions, corresponding to the clamping mechanisms, of the crawler belt, grooves are formed in the side face of the control base and correspond to the laser welding mechanisms in position, and abutting mechanisms are arranged on one sides of the laser welding mechanisms and correspond to the abutting mechanisms in position. A conveying mechanism rotationally connected to the interior of the support is arranged, the conveying mechanism is located below the abutting mechanism, and a driving mechanism is arranged outside the rotating shaft; automation in laser electric welding can be improved, the stability of welding points is ensured, then the welding quality is improved, meanwhile, detection is conducted after welding, and automatic separation of defective products is achieved.

The invention discloses an automatic welding device and method for FPSO ship body transverse butt welding seams, the automatic welding device comprises ship body steel plates and an equipment moving bottom plate, the number of the ship body steel plates is two, connecting grooves are formed in the side portions of the two ship body steel plates close to each other, and a fixing column is installed on the equipment moving bottom plate through a lifting height adjusting assembly; according to the ship body steel plate welding device, the contact roller is always in contact with a ship body steel plate during welding through the arranged contact self-adaptive adjusting assembly, the welding head can adjust the position in a self-adaptive mode and is always located at the position of one side of a welding seam, welding is more accurate, a connecting groove is polished through the arranged polishing assembly before welding, the welded part is smoother and smoother, and welding quality is improved. Stability after welding is facilitated, the problem that the welding quality is affected due to the fact that a welding part has rust is solved, chippings and rust are blown away through the air blowing assembly after grinding, and therefore the position of a connecting groove is cleaner, and the welding quality is guaranteed.

The invention discloses an impact type rotating wheel welding structure based on robot welding and a using method of the impact type rotating wheel welding structure, and relates to the technical field of production and manufacturing of impact type rotating wheels, in particular to the impact type rotating wheel welding structure based on robot welding and the using method of the impact type rotating wheel welding structure. The root water buckets are arranged on the rotating wheel center body, and the external water buckets are arranged on the root water buckets; a butt welding groove is formed in the connecting face of the external water bucket and the root water bucket, and the welding groove is arranged to be a multi-section linear groove. The method has the advantages that the gradual change positions are designed into a plurality of fixed-angle positions, and the robot is adopted for multi-layer and multi-pass welding. A complex space gradient welding position is optimized into a plurality of fixed-angle welding positions, and parameter self-adaption in the robot welding process is simplified, so that robot welding is achieved, the welding quality of the impact type rotating wheel is guaranteed, and the cavitation erosion resistance of the rotating wheel is improved.

The utility model relates to the technical field of superconducting magnetic resonance magnets, in particular to a magnetic resonance magnet superconducting coil turnover device which comprises a base frame and a coil placing frame rotationally installed on the base frame, and a turnover avoiding area is arranged at the position, corresponding to the coil placing frame, of the base frame. The coil placing rack comprises an arc-shaped supporting plate and a tray which is arranged on the supporting plate and is matched with the superconducting coil; and a detachable hoop is fixedly mounted on the coil placement frame. The coil placing frame comprises two end plates arranged at intervals and a plurality of supporting plates fixed between the two end plates. A positioning baffle protruding upwards is fixed to the supporting plate. The tray comprises an arc plate matched with the shape of the superconducting coil and a positioning plate fixed on the upper side of the arc plate, and the positioning plate is matched with the shape of the superconducting coil; a limiting plate matched with the positioning baffle is arranged on the lower side of the arc plate. After the superconducting coil is fixed on the turnover device, the turnover of the superconducting coil is facilitated, and the turnover device has the advantages of simple structure, convenience in operation, high safety and the like.

The present invention provides a strip steel rolling welding device, comprising a strip steel limiting assembly, a strip steel power assembly, a strip steel outer edge shaping assembly, a rolling device, a round tube heating assembly, an opening shaping assembly, a straight seam welding assembly and a weld scar cutting assembly, which are sequentially arranged. The strip steel outer edge shaping assembly is used to cut the two side edges of the strip steel into oppositely arranged grooves. The strip steel rolling welding device described in the present invention can cut the two side profiles of the strip steel into opposite grooves through the strip steel outer edge shaping assembly. After rolling, the two grooves fit together, and then the fitting grooves are melt-welded by the straight seam welding assembly. During welding, the strip steel body located at the upper groove position is used to release the welding material for molten welding, and the strip steel body located at the lower groove position is used to receive the molten welding material. The molten welding material is self-gathered in the weld seam by gravity and surface tension to ensure the welding quality, and can reduce or avoid the weld scar inside the welded pipe, thereby improving the forming quality.

The utility model provides a bipolar plate welding fixture. The bipolar plate welding fixture comprises a bottom plate; the bipolar plate is pressed between the bottom plate and the pressing plate, the bottom plate and / or the pressing plate are / is provided with an air blowing channel, the bottom plate is provided with a lower air blowing port communicated with the air blowing channel, the pressing plate is provided with an upper air blowing port communicated with the air blowing channel, and the upper air blowing port is communicated with the air blowing channel. And the lower air blowing ports and the upper air blowing ports are arranged towards the bonding wires of the adjacent bipolar plates. According to the utility model, the cooling and oxygen dilution of the upper and lower side surfaces of the welding wire or welding spot area of the bipolar plate can be realized, the condition that the welding wire or welding spot area becomes yellow or blue due to oxidation can be effectively prevented, and the welding quality is ensured.

The invention discloses an automatic welding production line for workpieces, and belongs to the technical field of automatic welding. An automatic workpiece welding production operation line comprises a rack and further comprises a feeding part, the feeding part comprises a first feeding assembly and a second feeding assembly, and the first feeding assembly and the second feeding assembly are arranged on the two sides of the rack respectively; the welding part is arranged at the tail end of the first feeding assembly; the conveying positioning part is arranged on one side of the second feeding assembly and used for conveying the to-be-welded materials to the welding part and transferring the welded materials from the welding part; the conveying positioning part comprises a pushing and pressing mechanism used for positioning materials and a conveying mechanism arranged on the pushing and pressing mechanism and used for conveying the materials. By means of the welding device, welded workpieces can be conveniently and rapidly moved out, machining gaps caused by workpiece replacement are avoided, and therefore the machining efficiency is improved.