25results about How to "Avoid welding defects" patented technology

The invention provides a pipeline joint welding system and method, and belongs to the technical field of welding systems. The pipeline joint welding system comprises an automatic welding machine, a carrier loader and an inflation protection assembly, and the inflation protection assembly is used for providing gas protection for the back face of welding work after running to the joint position in a pipeline along with the carrier loader; the welding method comprises the steps that S1, the inflation protection assembly runs to the inner joint of the pipeline; s2, filling protective gas; s3, the automatic welding machine is clamped and fixed; and S4, seam welding is conducted. When the automatic welding machine carries out welding work, protective gas can be inflated into the back face of the welding work to protect the welding work, the protective gas does not need to be inflated into a whole pipeline, use of the protective gas is reduced, and resources are saved; and manual construction in a narrow space can be replaced, the construction efficiency is higher, welding quality fluctuation caused by human factors is reduced, welding defects caused by fatigue of workers are avoided, and the welding quality is higher.

The present application relates to the technical field of welding process, and discloses an industrial welding device, an industrial welding data acquisition method and system, the device comprising a welding robot, a welding gun is installed, and welding work is performed according to a control instruction; a molten pool detection camera acquires a molten pool image and a timestamp; a laser sensor is installed at a preset position of a mechanical arm of the welding robot, acquires point cloud data and a timestamp; an upper computer transmits a control instruction to the welding robot, acquires a trajectory position and welding current voltage data, and records a timestamp of the trajectory position and welding current voltage data; the welding information and timestamps of the molten pool detection camera, the laser sensor and the welding robot are fused to obtain welding information of the same timeline and visually display the welding information. Through comprehensive recording of key information in the welding process, multi-source data is fused and processed, corresponding to the same timeline and visually displayed, thereby improving the correlation between various data.

The invention relates to the technical field of plasma welding, in particular to a tank and end socket welding method, device and system.The method comprises the steps that welding preparation is conducted, specifically, a tank and an end socket which are fixed through spot welding are hoisted to a welding station, and a bearing mechanism is arranged on the welding station and used for bearing and driving the tank to rotate and restraining the end of the tank; the axial slippage of the tank body is reduced; a welding head is physically calibrated and positioned through an infrared emitter, so that the welding head is aligned with a welding seam to be welded; and welding: starting a plasma welding program, rotating the tank body at a preset rotating speed, driving the tank body to rotate at a constant speed, and welding a welding seam by a welding head until the welding is completed after the tank body rotates for a circle. The device comprises a construction frame, a bearing mechanism, a driving mechanism and a welding mechanism. Manual intervention is reduced, and the welding efficiency and the quality stability are improved; the labor intensity is reduced, and the adjusting efficiency is improved.

This invention relates to a gear welding device and method for a press, belonging to the field of press manufacturing. The technical solution is as follows: A gear welding device for a press includes a work platform with a ground rail. A transfer trolley is movably mounted on the ground rail to carry the gear to be welded. Positioners are mounted on both sides of the ground rail, each equipped with a rotatable gripper. A gantry frame is also mounted on the work platform, spanning the ground rail. A welding robot is movably mounted on the gantry frame, its movement direction being horizontal and perpendicular to the ground rail. The welding robot is equipped with a machine vision module. This solution, through the positioner grippers, can precisely achieve 180° rotation of the gear, providing a stable posture adjustment basis for double-sided welding. The welding robot, combined with the machine vision module, enables automated and high-precision acquisition of weld information, providing data support for intelligent welding path planning.

The present application belongs to the technical field of probe processing, and particularly relates to a novel welding method for a MEMS probe. The novel welding method for the MEMS probe constructs and initializes a digital twin model of core components of the MEMS probe welding, combines a real-time collected synchronous three-dimensional data set and a lightweight agent model, and accurately outputs thermal stress distribution data, so as to early understand the thermal stress change in the welding process, effectively control potential risks, and when the risk condition is determined, the potential root cause can be diagnosed in-depth and the final adjustment suggestion can be generated. The accurate dynamic regulation mechanism enables the welding process to be flexibly optimized according to the real-time working condition, ensures the stable and reliable welding quality, avoids the welding defects caused by the out-of-control thermal stress, greatly improves the yield of the MEMS probe welding, reduces the production cost, and improves the production efficiency.

The application relates to the technical field of welding control, in particular to an alternating-current bus welding parameter self-adaptive regulation and control method based on arc pressure feedback, which comprises the following steps: acquiring the spatial coordinates of defect points in a welded workpiece and the grid brazing rates of each welding grid, and constructing a risk matrix; calculating the weighted grid information entropy of each welding grid according to the risk matrix; calibrating the energy saturation index in the welding process; determining the fuzzy membership degree scaling factor by using the weighted grid information entropy and the energy saturation index, and obtaining a corrected fuzzy controller; inputting a real-time arc pressure signal into the corrected fuzzy controller, outputting the welding power regulation and control instruction of the current welding grid, and dynamically adjusting the welding parameters. The technical scheme of the application can improve the uniformity of the bus overall brazing rate and the welding quality by dynamically adjusting the fuzzy membership degree scaling factor of the fuzzy controller.

The utility model relates to the technical field of saw blade welding, in particular to an alloy tooth saw blade welding machine. The clamping device comprises a mounting table, an operation table arranged at the top of the mounting table, a clamping and limiting mechanism and a first clamping table. The clamping and limiting mechanism is arranged at the top of the mounting table. The first clamping table is arranged on the clamping limiting mechanism. According to the saw blade clamping device, the clamping limiting mechanism is arranged, the positions of the limiting plates are adjusted to adapt to saw blades with different widths, the air cylinder drives the first clamping table and the second clamping table to be matched so as to clamp the saw blades, and the limiting plates are used for limiting the two sides of the saw blades in the clamping process; in this way, the position of the saw blade in the welding process can be accurately controlled, it is guaranteed that welding points are accurate, welding defects caused by saw blade deviation are avoided, errors caused by manual operation are reduced, welding consistency and stability are improved, meanwhile, saw blades of different widths can be clamped, a welding machine has wider applicability, and the welding efficiency is improved. And different production requirements can be met.

The invention relates to the technical field of plasma arc welding, and discloses an alloy steel mechanical part positioning welding device which comprises a welding table and a driving disc arranged on the top face of the welding table, a welding base is fixedly installed at the position, located on the side edge of the driving disc, of the top face of the welding table, and a plasma arc welding gun is arranged at the movable end of the welding base. A plurality of evenly-distributed mounting holes are formed in the top face of the driving disc, and a plurality of supports are arranged on the top face of the driving disc. According to the clamping device, the position of the support is adjusted, a limiting plate and a positioning plate are matched to ensure that the support is coaxially installed in an installation hole, then the support is attached to the outer wall of a workpiece through a spring telescopic rod and a pressing strip, the spring telescopic rod is fixed through a locking frame, and multi-point adaptive clamping can be formed according to the irregular shape of the special-shaped workpiece; meanwhile, due to the angle locking design of the locking cone pulley and the locking cap, deviation of the workpiece in the welding process is avoided, the problem that special-shaped alloy steel accessories are difficult to fix is solved, it is guaranteed that the workpiece is accurately positioned and firmly fixed before welding, and a foundation is laid for high-quality welding.

The invention provides a reflow soldering selective temperature control device and method based on neural network PID control, and relates to the technical field of selective temperature control, visual scanning monitoring of distribution of elements with different heat capacities is carried out on a PCB, temperature field data is acquired from visual scanning information, and real-time element size information of a preset key area is extracted; performing control quantity analysis, and outputting the control quantity of the independent temperature control module corresponding to the preset key area; carrying out selective temperature compensation analysis on a preset key area, carrying out selective temperature compensation control according to compensation analysis data, carrying out adjustment analysis on adjustment parameters of a micro heater, carrying out parameter adjustment control on the micro heater according to adjustment analysis data, and obtaining selective temperature control data; dynamic and accurate local temperature compensation can be realized for elements with different heat capacities on the same PCB, so that the temperature difference between the elements is remarkably reduced, and welding defects caused by different heat capacities of large and small elements are avoided.

The present application relates to point row welding machine technical field, especially provide gantry type point row welding machine, including the crossbeam plate of horizontal arrangement, and at least two groups of welding rod components are arranged along the horizontal direction of the crossbeam plate, the welding rod component includes welding electrode rod and elastic buffer assembly, the elastic buffer assembly is installed on the crossbeam plate, and is connected with the welding electrode rod, is used for driving the welding electrode rod along vertical direction elastic float, to adapt to the relief of the surface of the component to be welded, it further includes linkage fine adjustment mechanism, the linkage fine adjustment mechanism is connected between the welding electrode rod of adjacent two groups of welding rod components and the elastic buffer assembly, through the gear rack linkage transmission drive welding electrode rod relative assembly sleeve secondary upward fine adjustment, realize secondary avoidance protection under the condition of excessive convex, adopt linkage and realize the twice overload extrusion of electrode rod Unload effect, simple structure.

The application discloses a laser welding device for chain production and relates to the technical field of laser welding devices.The laser welding device comprises a base;the fixing seat, the mechanical arm, the heating nozzle and the flow guide cover are cooperated, so that the cooling speed of the welding seam is delayed, the welding seam quality and stability are improved, the functions of uniform heating of the welding seam and avoidance of cracking and peeling defects are realized;based on a heat transfer formula, the transmission temperature drop is calculated in real time, and the influences of multiple factors such as the length of the hose, the total heat transfer coefficient and the environment temperature are quantified;when the environment temperature changes beyond a threshold value, the gas flow rate is reversely calculated and adjusted, the heat loss is actively compensated, the outlet temperature of the heating nozzle is stabilized, the consistency of the preheating and the heat preservation of the welding seam is ensured, and the welding defects caused by temperature fluctuation are avoided;through image analysis, the positions of the welding seam and the heating nozzle are accurately determined, the actual distance between the two is calculated in combination with the camera parameters, the synchronous movement of the heating nozzle and the welding device and the collaborative control of the preheating before welding and the heat preservation after welding are realized.

This invention relates to the field of seam welding technology, specifically to a welding device for longitudinal seams of steel drum bodies. The device includes a rolling welding head, an outer diameter positioning roller, and a transfer frame. A curling positioning component, located below the rolling welding head, bends half of the steel plate into a circle and positions the overlapping edge of the curved circular portion. A pressing positioning component, located below the curling positioning component, presses the remaining straight portion of the steel plate in a rotating manner and positions the overlapping edge of the straight portion. Unlike traditional guide rail positioning methods, the positioning process of this device is performed simultaneously during the bending process of the steel plate. This eliminates the need for constant detection and control during guide rail movement, simplifying the operation process, reducing the time spent on positioning, and avoiding the time waste and path redundancy caused by separating positioning and bending in traditional methods. This makes the entire process from transfer to bending positioning of the steel plate more seamless, significantly improving overall production efficiency and reducing time costs in the production process.

The utility model discloses a welding mechanism used on an assembly line, relates to the welding technology field, and comprises a base plate and a crest welder, the top surface of the base plate is fixedly provided with a first support frame, the side wall of the first support frame is fixedly provided with a side position dimension detection camera, the top surface of the base plate is provided with a movable platform, and the top surface of the base plate is provided with a crest welder. A second electric push rod is fixedly installed on the top face of the bottom plate, one end of the second electric push rod is fixedly connected with a movable platform, the crest welder is fixedly installed on the top face of the movable platform, a terminal containing disc is arranged above the bottom plate, and the position of the terminal containing disc corresponds to the position of the side size detection camera. According to the utility model, through automatic introduction, detection and welding processes, the welding efficiency can be obviously improved. Compared with a traditional manual welding mode, manual intervention can be reduced through automatic welding, so that the welding period is shortened, and the production efficiency is improved.

The utility model belongs to the technical field of seat manufacturing, especially a welding tool, in view of the low positioning accuracy of traditional welding tool, the poor operation flexibility, the deviation caused by the dependence on artificial positioning workpiece, and the problem that the design does not fully consider the convenience and safety, influence welding quality and efficiency etc.

The present application relates to the technical field of intelligent welding, and particularly relates to a hydraulic support structural member intelligent welding system, which is based on a hydraulic support structural member welding robot and further comprises: a scanning modeling module, which is used for scanning a current assembly area of a to-be-welded hydraulic support after assembly of each batch of parts of the to-be-welded hydraulic support is completed, and generating a three-dimensional model; an identification comparison module, which is used for locally registering and comparing the three-dimensional model with a pre-stored design drawing model, obtaining a deviation vector field representing a current assembly error, and generating a deviation item list; an adaptive compensation module, which is used for dynamically deforming and pre-compensating weldable weld seams and optimizing a welding sequence, and generating compensated welding parameters; and a welding module, which is used for generating a welding program executable by a welding robot, and enabling the welding robot to perform welding work. The present application solves the technical problems of the prior art, such as dependence on manual operation, low efficiency, high risk and poor quality.

The utility model relates to a friction welding clamp for a driver shell. The friction welding clamp comprises a rectangular case, a pull-down station and a transverse push rod, the U-shaped rods are directly connected with the supporting feet in a hanging mode, the structures of the supporting feet are naturally avoided, the two supporting feet are synchronously pulled down through the lifting blocks, two-point cooperative fixing is achieved, and it is guaranteed that stress on the supporting feet is balanced. The downward pulling force compacts the machine body on the machine box to resist upward separating force, the transverse pushing force resists axial moving force, and stability of the welding end face is doubly guaranteed. A workpiece is placed, the U-shaped rod is hung in, and the pull-down and jacking mechanism is started, the steps are clear, and operation is easy. Under the combined action of the downward pulling force and the jacking force, a stable clamping system is formed, and welding defects caused by uneven stress or displacement in the welding process are effectively prevented.

The application discloses a kind of vacuum electron beam welding methods of beryllium aluminum alloy, belong to metal material welding technical field, comprising the following steps: A, beryllium aluminum alloy plate is polished and cleaned and is handled;B, beryllium aluminum alloy plate is clamped with welding fixture, and the position to be welded is placed in the welding work area of electron beam welding system workstation;C, electron beam welding system is pumped to welding work vacuum degree, sets welding process parameter;D, preheating treatment is carried out to workpiece before welding, starts electron beam welding system, and beryllium aluminum alloy plate is welded;E, after welding, carries out postwelding slow cooling treatment.The application is designed by electron beam welding process and tooling fixture, optimizes electron beam welding heat input, controls cooling rate and the like mode, improves the uniformity of weld molten metal composition and organization, and the beryllium aluminum alloy weld obtained is not only free from crack, pore and other welding defects, simultaneously, but also makes the mechanical property of welded joint better than base material.

The present application relates to the technical field of welding, in particular to a desk leg welding positioning device, which comprises a supporting assembly, a pre-positioning assembly and a clamping assembly; the supporting assembly comprises a base and a supporting table for placing a desk body; the pre-positioning assembly is provided with a lifting plate in sliding connection with the supporting table, a lifting structure for driving the lifting plate to move, two sliding plates slidingly arranged on the lifting plate and a pushing structure for pushing the sliding plates to approach the desk legs for pre-positioning; the clamping assembly is used for clamping the desk legs after pre-positioning. Through the mechanical pre-positioning and clamping linkage mechanism, the present application reduces manual intervention, improves the positioning accuracy and speed of desk leg assembly, and thus improves the overall welding efficiency.

The invention relates to the technical field of reaction kettle shell welding, in particular to a welding processing device for production of a reaction kettle lining shell, which comprises a welding clamping device, a moving platform, an inner wall supporting device, an outer wall extruding device, a welding seam correcting device and a positioning clamping device which are arranged beside welding equipment, a first moving end and a second moving end are arranged on the moving platform; the inner wall supporting device is mounted at the first moving end of the moving platform and is used for supporting the inner wall of the reaction kettle shell; the outer wall extrusion device is horizontally mounted between the first moving end and the second moving end of the moving platform and is used for extruding the outer wall of the reaction kettle shell; the welding seam correcting device comprises an inner seam extrusion correcting device installed on the inner wall supporting device and further comprises an outer seam extrusion correcting device installed on the outer wall extrusion device. According to the automatic welding equipment, the welding quality can be improved, and the service life of the equipment can be prolonged.

This utility model discloses a constant pressure control device for wire feeding additive welding, belonging to the field of additive welding technology. It includes an additive housing fixed on a vertical slide block, a main shaft rotatably installed within the additive housing, and a welding cutter head fixed at the front end of the main shaft. A piston ring is provided inside the additive housing near the front end of the main shaft, with an annular axial gap between the piston ring and the additive housing. A cutter head sleeve for fitting onto the outside of the welding cutter head is fixed on the lower surface of the piston ring. The cutter head sleeve has a wire feeding hole. A hydraulic channel communicating with the axial gap is provided inside the additive housing. The hydraulic channel penetrates the additive housing and is connected to an oil supply assembly. The oil supply assembly contains a pressure sensing module for monitoring the pressure within the hydraulic channel. This utility model ensures constant pressure during wire feeding additive welding and promptly detects material blockage, thus avoiding welding defects.

The invention relates to the technical field of manganese-copper diverter production, and discloses production equipment and a preparation method suitable for a manganese-copper diverter, and the production equipment comprises a discharging frame, a straightening feeder, an edge trimmer, a pushing machine, a friction stir welding machine, a straightening machine, a nondestructive testing machine and a receiving frame which are transversely arranged in sequence; the friction stir welding machine comprises a welding machine body, a friction stir welding piece and a pressing wheel blowing piece, a bearing plate is installed on the welding machine body, an air cylinder is installed at the top of the welding machine body, and the driving end of the air cylinder is connected with the friction stir welding piece located above the bearing plate. Friction stir welding is used for replacing argon arc welding to weld the red copper and manganese copper combined copper sheet, heat input and heat affected zones are reduced, coarse manganese copper grains are inhibited to stabilize resistance, a pressing wheel blowing piece integrating pressing, preheating and cleaning functions is designed, the copper sheet is pressed before welding, a welding seam is preheated through hot air, chippings are removed, and a pressing wheel is heated and cleaned, so that the welding quality is improved, and the welding efficiency is improved. And the welding quality is improved.

The application discloses a kind of laser electric arc welding device and method of aluminium alloy medium plate narrow gap, the gap reserved between base material is big blunt edge small groove angle form, TIG welding gun one is arranged in sequence along welding direction above base material, MIG / MAG welding gun, laser beam two, welding wire, laser beam one, shielding gas nozzle.In the back of base material along the welding direction, TIG welding gun two, ultrasonic amplitude rod, TIG welding gun three are arranged in sequence.TIG arc between upper and lower TIG welding gun can preheat / melt the base material of butt joint gap, it is favorable to the wet spreading nature of welding wire after melting of MIG / MAG welding gun enters butt joint gap.Special fixture is used to connect TIG welding gun one, MIG / MAG welding gun, laser beam two, welding wire, laser beam one, shielding gas nozzle, then synchronous swing device is connected with this fixture.It can realize to improve laser energy utilization and welding efficiency, reduce porosity, incomplete fusion, undercut and other welding defects, improve weld structure and mechanical properties.

The application belongs to the technical field of cable welding, and discloses an automatic wire twisting and welding device for a cable head, which comprises a twisting and welding positioning seat, a layered wire twisting assembly is fixedly installed on the inner side of the twisting and welding positioning seat, guide assemblies are fixedly installed on the left side and the right side of the layered wire twisting assembly, a moving assembly is fixedly installed on the back of the two guide assemblies, a wire placing assembly is movably assembled on the top of the moving assembly, a lifting assembly is fixedly installed on the front side of the wire placing assembly, and a circular uniform welding assembly is fixedly installed on the front side of the lifting assembly. Through the circular uniform welding assembly and the rotatable wire placing assembly which cooperate with each other, the guide pipe can drive the welding wire to make circular motion around the wire butt joint, the welding head synchronously performs circular heating welding on the wire butt joint, uniform and stable conveying of the welding wire and circular synchronous welding are realized, the welding wire is accurately sent to the wire butt joint, circular and uniform welding of the wire butt joint is realized, welding defects such as blowhole, inclusion, crack and uneven weld are effectively avoided, and the welding quality is improved.

This invention discloses an automated welding device for steel structure production, including a fixed frame with a moving unit at its top; and a welding unit mounted on the moving unit, including a support frame and a welding torch installed at the bottom of the support frame. This invention uses a flux output unit composed of a material bin, a separation mechanism, and a double-discharge component. It can classify recycled residual flux, retaining reusable flux, which is then further separated into fine and coarse materials for separate storage. The double-discharge component can sequentially output the flux in layers, forming a layered structure of fine material at the bottom and coarse material at the top. The fine material at the bottom fully fills the weld gap space, tightly wraps the welding wire end, and strictly prevents air intrusion. The coarse material at the top forms a stable protective slag shell, enhancing insulation and permeability, and smoothly expelling arc gases and water vapor. This effectively avoids defects such as incomplete penetration, incomplete fusion, open welds, and voids, greatly improving weld formation quality and welding reliability.

The utility model provides a welding inflation plugging protection device, which relates to the technical field of steel pipe welding and comprises a middle shaft rod, a fixing disc is mounted at the upper end of the middle shaft rod, an air outlet hole is formed in the middle shaft rod and the fixing disc in a penetrating manner, an air belt connector is mounted at the lower end of the middle shaft rod, and the air belt connector is connected with the air outlet hole in a penetrating manner. And a sliding disc is movably mounted on the outer side of a rod body of the middle shaft rod in a penetrating manner. The isolating layer made of the high-elastic three-proofing cloth and the elastic rubber ring form a double-sealing structure, so that independent local sealing spaces are formed on the two sides of the welding position of the pipeline, the whole pipeline is not inflated, and compared with a traditional overall argon filling method which needs to fill the whole space of a large-diameter or long pipeline, the sealing structure is simple and convenient to operate. By means of the design, the using amount of inert gas can be greatly reduced, the gas purchasing cost is remarkably reduced, meanwhile, a large amount of inert gas is prevented from being directly discharged into the atmosphere, the green construction concept is met, and energy conservation and emission reduction are achieved.