145 results about "Welding power supply" patented technology

The invention relates to a multi-modal sensing fusion-based automatic correction method and system for a welding robot body, the system comprises a three-level distributed architecture of a sensing layer, an edge layer and a control layer, the sensing layer is integrated with a millimeter wave radar, a camera, a six-dimensional force / torque sensor, a welding power supply data acquisition module and an acoustic emission sensor, and multi-modal data acquisition is realized; the edge layer runs a fusion algorithm through an embedded AI computing platform carrying a GPU to complete data processing and decision making; and the control layer receives the deviation correction instruction to drive the robot to execute motion correction. The method comprises the steps of multi-modal data real-time acquisition and synchronization, data preprocessing and feature extraction, multi-source information fusion and decision making, and real-time control and execution. The problems of single sensing dimension, response delay, weak anti-interference capability and the like in the prior art are solved, the robustness, the real-time performance and the deviation correction precision of the system are improved, full-automatic intelligent welding is realized, and the method is suitable for high-precision scenes such as shipbuilding and pressure vessel welding.

The invention discloses a welding power supply extension module integrating arc voltage tracking and welding machine control functions and a welding control method, and belongs to the technical field of electric arc welding. In order to solve the problems that arc voltage tracking and welding machine control are mutually independent and cannot cooperate in real time in the existing TIG welding process, so that the welding process is tedious in operation and unstable in quality, the system comprises a core processor for executing an arc voltage tracking control algorithm and a welding parameter adjusting algorithm; the signal conditioning circuit is used for collecting and conditioning a current signal and a voltage signal output by the welding power supply; the welding power supply control module is provided with a plurality of interface circuits used for being connected with welding power supplies of different interface types; the core processor receives state information of the welding process through the high-speed communication module and generates a first control instruction used for adjusting output parameters of a welding power source and a second control instruction used for adjusting the height of a welding gun according to the state information and current signals and voltage signals collected by the signal conditioning circuit. The method is used for electric arc welding.

The invention discloses an automatic distribution method and system for welding equipment, a main controller is respectively connected with an input unit, a power distribution controller, an output unit, a communication unit and an air valve controller, and the method comprises the following steps: in response to a received station closing signal sent by the input unit, extracting a corresponding station number and a channel number; the connection state of each welding power supply is retrieved in sequence, and when the unused welding power supply is retrieved, the power supply serial number and the station number are sent to the power supply distribution controller for electrical connection; forwarding the channel number to a welding power supply through a communication unit; the station number is sent to an air valve controller, and an air valve is opened; sending the station number to an output unit and starting a power supply; and in response to a received welding ending signal sent by the welding power supply, ending the process. The connectivity of the welding power sources and the station welding torches is controlled through the automatic distribution controller, the use efficiency of the stations on the power sources can be effectively distributed, the number of the power sources is smaller than the number of the stations, and the investment of a user on welding equipment is reduced.

An example welding torch includes: a handle piece that is electrically and mechanically connected to the torch head on a first end of the handle piece; a power supply connector configured to be coupled to a welding power supply on a first end of the power supply connector, wherein at least one of the handle piece or the power supply connector are a single piece; a welding cable that is electrically and mechanically connected to both a second end of the handle and a second end of the power supply connector; a first cover over the torch head, the handle piece, and a first portion of the welding cable connected to the handle piece; and a second cover over the power supply connector and a second portion of the welding cable connected to the power supply connector.

This invention discloses a variable-wave arc welding power supply control method, arc welding equipment, control device, and storage medium. Applied to an arc welding equipment, the equipment includes a coordination control module and at least two power conversion modules. The coordination control module is connected to the controlled terminals of each power conversion module to control the switching of the power conversion modules to form and output pulse power. The output terminals of each power conversion module are connected in parallel to superimpose the electrical energy of the arc welding power supply. The variable-wave arc welding power supply control method includes: the coordination control module outputting its corresponding control commands to each power conversion module; and each power conversion module adjusting the pulse width and on / off timing of the pulse power according to the control commands to increase the power or voltage amplitude of the arc welding power supply. This design optimizes the output waveform of the welding power supply, enabling it to provide excellent dynamic characteristics and improve welding performance.

The disclosed technology generally relates to welding technology, and more particularly to an electrode assembly for arc welding (e.g., submerged arc welding). In one aspect, a welding system includes a welding power source and an electrode assembly operably coupled to the welding power source and an electrode. The welding power source is configured to apply a direct current electrode negative (DCEN) to the electrode using the electrode assembly to establish an arc between the electrode and the workpiece, and to apply a direct current electrode positive (DCEP) or alternating current (AC) to the electrode after establishing the arc.

The invention discloses a full-automatic intelligent stud welding system, and relates to the technical field of automatic welding equipment. The system comprises a crawler-type movable chassis, a multi-axis mechanical arm, a welding stud welding execution assembly, an automatic welding stud feeding system, an integrated motion control device and a welding power source device. The integrated motion control device cooperatively controls the movement of the chassis and the posture of the mechanical arm based on a coupling kinematics model, adopts a coarse-fine coupling positioning strategy, and eliminates the parking error of the chassis through a visual sensing module and an inverse kinematics solver. The system is further provided with a dynamic following welding algorithm, and relative static welding in a continuous moving state is achieved by generating a compensation motion vector opposite to chassis involved motion. In addition, the system integrates dynamic collision detection based on motor current monitoring and closed-loop feeding sequential control logic. The problems of low positioning precision and poor operation efficiency in large workpiece welding are effectively solved, and high-precision automatic operation in a complex environment is realized.

The invention provides a no-load voltage calibration device, and relates to the technical field of voltage calibration, the no-load voltage calibration device comprises a calibration device main body, the calibration device main body is provided with an input end used for connecting a welding power supply and an output end used for connecting a multimeter; a plurality of adjustable resistor assemblies are arranged in the calibration device main body, and the plurality of adjustable resistor assemblies are connected in series; a plurality of control knobs are arranged on the calibration device main body, and each control knob is connected with one adjustable resistor assembly. The input end of the no-load voltage calibration device is used for being connected with a welding power source, and the output end of the no-load voltage calibration device is used for being connected with a multimeter. The multiple adjustable resistor assemblies are arranged on the calibration device body, and when the resistance value of the resistor needs to be changed, the resistance value of the adjustable resistor can be adjusted more accurately through matched adjustment of the multiple adjustable resistor assemblies.

The invention relates to the technical field of composite material and metal connection, in particular to a laser connection device and method for a non-conductive part and metal. The laser connecting device for the non-conductive part and the metal comprises an electrode wheel mechanism, a machining platform, a welding power source, a pressurizing mechanism, a laser welding mechanism and a moving mechanism, the electrode wheel mechanism forms pressing force on a to-be-formed structure, meanwhile, a current loop forms Joule heat on the metal part, and the metal part is welded to the machining platform. The Joule heat preheats the non-conductive part to form a pre-connection area, so that the part, located in the pre-connection area, of the non-conductive part is molten, and a to-be-connected interface of the non-conductive part and the metal part is spread in a flowing mode; the moving mechanism drives the machining platform to move so that the pre-connecting area can move to the acting area of the laser beams, and the active brazing filler metal preset at the connecting interface of the non-conductive part and the metal part is subjected to metallurgical reaction under the action of a heat-force coupling field.

The invention discloses an output voltage synchronous acquisition circuit, which comprises a sampling circuit, an MCU (Microprogrammed Control Unit) and a PWM (Pulse Width Modulation) controller, the sampling circuit is connected with the output end of the welding power source and used for outputting a sampling voltage signal matched with the input range of the MCU. The control input end of the PWM controller is connected with the MCU, the PWM controller is used for generating a PWM signal according to an instruction of the MCU so as to control the output of the welding power supply, and the PWM controller is provided with a synchronous signal output end and is used for outputting a synchronous pulse signal when each PWM period starts; wherein the trigger input end of the MCU is connected with the synchronous signal output end of the PWM controller, and the MCU is configured to respond to a received synchronous pulse signal and trigger the ADC in the MCU to sample a sampling voltage signal. Compared with the prior art, the method has the advantages that the synchronous signal of the PWM controller serves as an ADC sampling hardware trigger source of the MCU, the sampling starting point and the power output period starting point are strictly aligned, the problem of time sequence randomness caused by traditional software triggering is solved, and the sampling precision is improved to the microsecond level.

The problem to be solved by the present invention is to provide a spatter detection method that can detect the generation of spatter using existing sensors without resetting the voltage detection line near the electrode chip. To solve the above problem, in a spot welding method using a spot welding apparatus, pressure is applied to a clamped workpiece using an electrode chip, and a pulsed welding current generated by repeated cycles of alternating energization control and energization pause implemented by a welding power supply circuit is provided to the workpiece. Simultaneously, during energization control, the welding current is maintained within a set peak current range during the peak maintenance interval. The spatter detection method includes: a step of acquiring the average value of the voltage detection value Vpv of the voltage sensor during the peak maintenance interval of each of the aforementioned cycles; and a step of determining the presence or absence of spatter generation based on the difference between the average value of the voltage detection value Vpv during the peak maintenance interval of the Nth cycle and the average value of the voltage detection value Vpv during the peak maintenance interval of the (N-1)th cycle.

This invention relates to an autonomous welding machine system utilizing shielding gas energy storage and its usage method. The system includes a pressure vessel storing high-pressure liquid shielding gas. The pressure vessel's output is connected to the inlet of a heat exchanger. An outlet of the heat exchanger, connected to the inlet, leads to the welding torch's outlet. A pump is connected to the outlet of the heat exchanger, with its output connected to the workpiece and the welding torch, and then to the inlet of the heat exchanger, forming a circulating flow of the working fluid. An expander is connected in series between the outlet of the heat exchanger and the welding torch. The expander's power output is connected to a generator, and the generator's output is electrically connected to the welding machine. Thus, relying on the shielding gas energy storage in the pressure vessel, the system achieves the necessary cooling, gas protection, and welding power supply during welding, greatly simplifying welding support requirements, optimizing welding operations, and realizing autonomous welding processes. It is particularly suitable for on-site welding operations in the field.

An arc welding apparatus 70 comprises a welding power supply device 40 and a welding torch 50 holding a non-consumable electrode 52. The welding power supply device has a main circuit 10, a high-frequency generating circuit 30, and a control unit 20. The main circuit is electrically connected to the electrode 52 and supplies a welding output to the electrode. The high-frequency generating circuit has a charging unit 33, a charging switch 32 electrically connected to the charging unit, and a discharging switch 34 electrically connected to the charging unit. The high-frequency generating circuit generates a high-frequency voltage VRF between a base material 80 and the electrode by discharging the charging unit. The control unit controls charging of the charging unit by activation of the charging switch and discharging of the charging unit by activation of the discharging switch.

The application discloses a kind of arc force control method and system of flux-cored wire welding process in the technical field of welding power supply, to solve the problem that pure voltage adjustment cannot consider arc force control demand under different transition forms in prior art, leading to difficult droplet transition, arc oscillation, big spatter.It includes monitoring the electrical parameters of welding process;According to the electrical parameter, the abnormal working condition that the arc force deviates from the preset target state is identified;In response to identifying the abnormal working condition, a voltage intervention pulse corresponding to the abnormal working condition with at least one adjustable intensity parameter is applied to the welding voltage to adjust the arc force to the preset target state;The application adjusts the power output waveform by monitoring the welding electrical parameters, and has certain gain effect on the arc stiffness and stability of the flux-cored wire in the large current domain, effectively reduces large particle spatter and improves the overall forming of weld.

The application discloses a kind of based on multi-path pulse current implementation's ultra-high frequency pulse welding power supply system, comprising: N Independent constant current source, output same or different constant current value;Current switching circuit is used to switch selected constant current source and access welding assembly;Control unit is used to drive the on-off of current switching circuit according to preset pulse waveform, to output pulse current with different amplitude of multiple sections;Absorption circuit is used to actively switch the freewheeling loop of parasitic inductance in the switching moment of pulse current from large current jump to small current;Welding assembly includes welding gun and the welding platform of bearing to be welded workpiece;Control unit is also used to actively turn on absorption circuit when the amplitude of current is switched from high to low step, and the energy stored in the output loop of parasitic inductance is quickly released through absorption resistance.This application has the advantages of realizing accurate current step control, significantly improving dynamic performance, improving system reliability and modular maintenance.

This invention discloses an integrated method and system for hoisting, positioning, and welding of steel tower segments for bridges, relating to the field of bridge engineering construction technology. The method includes: setting multiple hoisting points on the steel tower segment; real-time acquisition of cable stiffness, vertical acceleration, and wind speed and direction; calculating the target command tension at each hoisting point and issuing it to the hydraulic system; after hoisting, acquiring the peak residual stress and the initial six-degree-of-freedom positioning error, encapsulating them into a first state transfer vector; using the first vector as input, iteratively adjusting the six-degree-of-freedom positioning mechanism; iterating until all degree-of-freedom errors converge to within the design tolerance; and finally, encapsulating the final positioning error and the current residual stress into a second state transfer vector; using the second vector as input, calculating an adaptive heat input for each weld pass, including bevel depth heat input adjustment, positioning error attenuation correction, and thermo-mechanical coordinated adjustment, acting on the reference heat input to drive the welding power source to perform welding pass by pass, from the bottom of the slope to the top.

The utility model relates to the technical field of steel machining equipment, and discloses a steel welding device which comprises a machine base, two symmetrical fixing plates are fixedly connected to the inner side face of the machine base, welding power source equipment is fixedly connected to the upper surfaces of the two fixing plates, and angle adjusting assemblies are arranged on the upper surfaces of the two fixing plates. And fixed seats are arranged above the two fixed plates. According to the welding device for the steel, through the effects of the welding power source equipment, the mounting plate and the welding gun, the conveyed steel can be automatically welded, so that manual operation can be reduced, the labor cost is reduced, the extension length and angle of the welding gun can be adjusted under the effects of an angle adjusting assembly and a hydraulic telescopic rod, and the welding efficiency is improved. Therefore, the height and the angle of the welding gun can be adjusted according to actual conditions, the welding quality is improved, meanwhile, the welding applicability is enhanced, continuous manual opposite welding is not needed in the automatic welding process, the welding speed is high, and the production efficiency is greatly improved.

The invention relates to the technical field of welding, in particular to a combined machining device for a heterostructure. The combined machining device for the heterostructure comprises a machining platform, a pressing mechanism, an electrode wheel mechanism, a welding power source, a laser welding mechanism and a second moving mechanism, and the pressing mechanism and the laser welding mechanism are both connected with the second moving mechanism and used for driving the pressing mechanism and the laser welding mechanism to move synchronously. And the second moving mechanism drives the electrode wheel to roll and generate Joule heat at the welding position to form a pre-connecting part while the pressing mechanism applies pressure to the welding position, and the second moving mechanism drives the laser welding mechanism to move so as to perform laser welding on the pre-connecting part. Pre-connection is completed while the electrode wheel exerts pressing force, the pre-connection part is fused instantly through laser, and integrated continuous operation of pressing, pre-connection and accurate fusion is achieved.

Disclosed example power supplies, user interfaces, and methods are provided for simple and intuitive setup for configurable and / or default settings for a welding power source and / or wire feeder. The welding parameters may correspond to a default and / or factory setting that represents empirically adduced values for a particular welding procedure (e.g., based on material type, electrode diameter, welding process and / or tool, etc.). The welding parameters may additionally or alternatively be configured for a particular purpose. Once a configurable setting has been selected, the configurable setting controls the system output. Furthermore, once a configurable set of welding parameters has been established, the operator may return to the default settings by resetting the welding parameters.

A welding system includes a collaborative robot, a robot controller, a welding torch having an end located at a tool center point (TCP), a welding power supply, and a teach pendant. The teach pendant includes a UI application configured for programming welding points and parameters. In a first operation mode, the UI application displays the plurality of welding points in a list that includes a highlighted closest welding point having a three-dimensional position that is closest to the TCP. The highlighted closest welding point automatically updates upon manual movement TCP. In a second operation mode, the list includes a highlighted selected welding point, and the UI further displays a selector button that shows a straight line distance of the TCP to a three-dimensional position of the highlighted selected welding point. Activation of the selector button causes the TCP to move to the position of the highlighted selected welding point.

The invention discloses a road bridge expansion joint welding device, which belongs to the technical field of road bridge expansion joint welding and comprises a welding system body and a real-time control system arranged in the welding system body. The real-time control system comprises an arc voltage / current sensor module, a signal conditioning and collecting module, a main controller module, a welding power source interface module, a degaussing coil driving module, a robot servo driving module, a man-machine interaction and monitoring module and an offline calibration data storage module. The output end of the arc voltage / current sensor module is connected to the input end of the signal conditioning and collecting module. According to the method, welding arc signals are collected to recognize magnetic deflection blow, the deflection angle and magnetic field distribution are dynamically calculated, measures such as pulse modulation, active demagnetization or track compensation are adopted for autonomous decision, the incomplete fusion defect caused by residual magnetism is eliminated, the anchoring welding quality is ensured, and early brittle failure and failure caused by hidden danger welding spots are avoided.

The invention relates to the technical field of additive manufacturing, and discloses an ultrasonic-assisted double-wire consumable electrode-non-consumable electrode electric arc additive manufacturing device and method. In the device, two non-consumable electrode welding guns are fixed through a welding gun clamping mechanism; the wire fixing mechanism is connected with the welding guns and fixes the double wires, the double wires are connected with the positive electrodes of the two welding power sources respectively, the non-consumable electrode welding guns are connected with the negative electrodes of the welding power sources respectively, electric arcs burn between the two sets of non-consumable electrodes and the wires, and the wires are melted to form molten drops for deposition. The ultrasonic probe is fixed by the ultrasonic head fixing mechanism and arranged on the side face of the deposition layer to emit ultrasonic waves, the ultrasonic head fixing mechanism is rigidly connected with the welding gun clamping mechanism and moves along with the height of the deposition layer, ultrasonic vibration promotes wetting and spreading of molten drops, and meanwhile grains are refined. According to the method, the structure is simple, electric arc additive manufacturing heat accumulation is remarkably reduced, the deposition rate is multiplied, meanwhile, the microstructure is remarkably improved, the mechanical property of the component is improved, and efficient, high-quality and low-cost manufacturing of the large component is achieved.

Systems and methods for operating a welding power supply are disclosed. A method may include operating the welding power supply during a short arc welding process having repetitive cycles each including a short circuit phase and an arc phase, during the short circuit phase, causing a fast ramp up of current from a background current level to a predetermined current level, and upon reaching the predetermined current level, slowing the fast ramp up of the current to a relatively slower ramp up of current until the arc phase begins, wherein the predetermined current level is set based on a percentage of a current level detected at a transition between the short circuit phase and the arc phase in at least one prior cycle.

This invention belongs to the field of welding technology, and particularly relates to a laser-TIG hybrid welding device and method that can increase weld width. Its features include a laser welding torch and a TIG welding torch. The TIG welding torch incorporates an ultrasonic micro-vibration component. The laser welding torch is connected to a laser generator, and the tail of the TIG welding torch is connected to a welding power source. The TIG welding torch contains a combined electrode, which includes a copper rod at the top and a tungsten electrode connected to the lower end of the copper rod. The ultrasonic micro-vibration component includes a transducer and an amplitude transformer connected to the transducer. The copper rod is located within the central hole of the transducer and the amplitude transformer. The tungsten electrode is connected to the amplitude transformer via an eccentric ceramic ring. A tungsten electrode sleeve is connected to the bottom of the amplitude transformer, and a nozzle is located on the outer side of the tungsten electrode sleeve. The bottom of the tungsten electrode sleeve is a concave mirror surface. The beneficial effects of this invention are: it is suitable for welding nickel-based alloys, significantly increases weld penetration, improves weld formation quality, enhances the welding capability of thick plates, and solves the welding problem of nickel-based alloy thick plates larger than 10mm.

The present invention provides a pulsed arc welding tracing control method, control device, welding system, welding program, and welding power supply that, even when using the pulsed arc welding method, are not affected by the pulse shape of the welding current and arc voltage, and furthermore, enable the extraction of highly accurate information on the change in protrusion length, even for portions that do not actually appear as changes in current. [Solution] A pulsed arc welding tracking control method in which the amount of electrical change X detected during weaving includes at least a welding current detection signal Io, an arc voltage detection signal Vo, a predetermined set voltage Vset, and a predetermined current conversion characteristic value Char as parameters, a predetermined period Tf is defined as one interval, the average value Yn of the amount of electrical change X in each interval is calculated, and based on the average value Yn, information on the protrusion change in the groove is extracted to track the weld line.

The application discloses a high-frequency pulse compound direct-current precise micro-TIG arc spot welding power supply and a spot welding method, wherein the power supply comprises a first direct-current power supply, a second direct-current power supply, a high-frequency switching circuit and a control system; the second direct-current power supply is connected with the high-frequency switching circuit, and a pulse current output by the switching circuit is superimposed with direct current output by the first direct-current power supply to provide the arc load; and the control system comprises a DSP controller, a driving circuit, a sampling circuit, a fault detection circuit and the like. The power supply can provide high-frequency pulse current for the micro-TIG arc, improve the transient current density of the micro-TIG arc, and greatly reduce the occurrence of defects such as micro-TIG arc anode spot jumping and easy arc breaking, so that the arc current of stable welding can be reduced to 2A, the stability of the micro-TIG arc and the quality of the spot welding joint are obviously improved, and the application range of the micro-TIG arc welding process is expanded. The application can be widely applied to arc welding power supply equipment.

The invention discloses monitoring linkage control high-precision resistance spot welding equipment, and relates to the technical field of resistance spot welding, and the equipment comprises a main control circuit board which takes a TDA4VM chip as a control core and comprises an integrated power supply module, an IGBT driving module, an ADC analog signal processing unit, a communication interface and a digital I / O isolation driving module, all the modules and units are in electric signal connection with the main control circuit board; the TDA4VM chip controls an inverter direct-current welding power source of the spot welder through the IGBT driving module, receives signals of a sensor system through the ADC analog signal processing unit, interacts with the visual monitoring unit and external equipment through a communication interface, and achieves safety control and actuating mechanism driving through digital I / O isolation driving. Multi-signal real-time monitoring, process parameter intelligent optimization and post-welding quality prediction in the welding process are achieved, and the method is particularly suitable for precise welding of tiny parts such as aviation relay reeds.

The application discloses a preparation method of a special-shaped electric heater and a special-shaped flexible electric heater prepared by the method. In the preparation process, first, the shape size and electric heating power of the electric heater are designed according to the use requirement. Then, an electrothermal conversion layer is deposited on the surface of a lower insulating packaging layer, the resistance value and layout mode of a heating element of the electric heater are designed, the electrothermal conversion material on the surface of the lower insulating layer is engraved into the heating element, a metal layer is deposited on the heating element by a vacuum method to serve as a power line welding point, a power line is welded on the surface of the power line welding point, and finally, a vacuum hot-pressing is adopted to package an upper insulating layer to form a complete electric heater. The application can not only arrange the layout mode of the heating element according to the requirement, but also adjust the heating resistance value of the heating element by changing the width and length of the heating element, so that the heating power of the electric heater is conveniently adjusted, a high-voltage low-current electric heater can be prepared, and the application requirement of the heater in the aerospace field is met, that is, the heater has many specifications and large size changes.

The application discloses a dead zone detection welding control method, a welding machine system, a device and a storage medium, and is applied to the welding machine system. The welding machine system comprises a power supply driving module and a control module. A plurality of switching tubes are arranged in the power supply driving module. The control module is connected with the controlled ends of the switching tubes to output PWM control signals to control the power supply driving module to output welding power. The dead zone detection welding control method comprises the following steps: acquiring a dead zone welding voltage of the welding power in a dead zone time of the power supply driving module; and when the dead zone welding voltage meets a turn-off condition, turning off the switching tubes to reduce the welding current of the welding power. According to the design, the particle splashing caused by the large current is reduced, the stability of droplet transfer in the welding process is improved, and the forming quality of the welding seam is optimized.

The utility model discloses a common magnetic circuit reactance module, a welding power supply device and a welding machine, which comprise a first inductor and a second inductor which are mutually coupled, the head end of the first inductor is connected with the head end of the second inductor, and the tail end of the first inductor is connected with the tail end of the second inductor. The head end of the first inductor and the tail end of the second inductor are dotted terminals, main path current flows in from the head end of the first inductor and the head end of the second inductor at the same time, first branch current passes through the first inductor, second branch current passes through the second inductor, the first inductor can filter pulsation of the first branch current, and the first branch current can filter pulsation of the second branch current. The first inductor can filter the pulsation of the first branch current, the second inductor can filter the pulsation of the second branch current, reduce the electromagnetic interference of the main circuit current and provide a welding power supply for the welding gun, the first branch current and the second branch current synchronously flow into the head end of the first inductor and the head end of the second inductor, and the head end of the first inductor and the tail end of the second inductor are dotted terminals. Synchronous demagnetization can be realized, and the structure is simple.