273 results about "Welding power supply" patented technology

The invention discloses an ultra-low splashing robot welding system and method based on intelligent waveform control, and relates to the technical field of robot welding, and the method comprises the following steps: collecting historical welding data, extracting steady state molten pool characteristic parameters, and constructing an associated database; establishing a three-dimensional coordinate system, and setting and verifying a molten pool monitoring area; molten pool images and temperature field distribution are collected in real time, dynamic molten pool characteristic parameters are extracted, the deviation degree between the dynamic molten pool characteristic parameters and steady-state characteristics is calculated, and whether waveform adjustment is triggered or not is judged by combining arc signals; a reference waveform parameter is called according to the current working condition, the waveform adjustment amount is output through a neural network, an intelligent welding waveform instruction is generated, and a welding power source and a robot are controlled to move through a real-time communication link; and monitoring the state and the splashing amount of the molten pool after adjustment, evaluating the splashing inhibition rate, and optimizing the system. Intelligent closed-loop control in the welding process is achieved, splashing is remarkably reduced, the welding stability and quality are improved, and the method is suitable for various automatic welding scenes.

A wheeled, height-adjustable welding robot, characterized in that it comprises: a wheeled chassis comprising a traveling frame and a wheel assembly disposed at the bottom of the traveling frame and rotatably connected to the traveling frame; a support arrangement arranged below the chassis and telescopically connected thereto for exerting a supporting force on the wheeled chassis when it is stationary; a height-adjustable welding robot assembly comprising a lifting mechanism fixedly connected to the upper end surface of the traveling frame, a robot lifting platform vertically displaceably connected to the lifting mechanism, and a welding robot assembly fixedly arranged above the robot lifting platform; a welding power supply arrangement arranged above the traveling frame.

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 split type gas shielded welding machine, and relates to the technical field of welding machines, the split type gas shielded welding machine comprises a bottom plate, a welding power source is arranged on the top of the bottom plate close to the edge of one side, one end of the welding power source is coupled with an equipment welding gun through a wire, and a gas tank used for conveying shielding gas to the welding gun is arranged on the top of the bottom plate close to the center. When the ship body welding device is used and before a ship body is welded, due to the fact that many impurities and metal particles exist on the surface of the ship body, in the welding process, firstly, the impurities on the surface of the ship body are cleaned through rotation of cleaning equipment, meanwhile, the surface of the ship body is heated through an infrared heating pipe, the follow-up ship body welding quality is improved, and meanwhile, the welding efficiency is improved. The two negative pressure pumps are started, negative pressure is generated in the dust collection bin, cleaned impurities are collected into the dust collection bin under the action of pressure difference to be collected, and through the action of the pretreatment assembly, the split type gas shielded welding machine integrates pretreatment, cleaning and 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 welding power source host comprises a power source box, an air inlet and an air outlet are fixedly connected to the two sides of the power source box correspondingly, mounting grooves are formed in one side of the air inlet and one side of the air outlet, and four sets of first hydraulic rods and first springs are fixedly connected into the mounting grooves; first positioning plates are fixedly connected to the other ends of the first hydraulic rods and the first springs, rotating doors are rotatably connected to the two sides of one ends of the air inlet and the air outlet, two sets of second hydraulic rods and second springs are fixedly connected to one sides of the rotating doors, and second positioning plates are fixedly connected to the other ends of the second hydraulic rods and the second springs; and a mounting plate is arranged in the mounting groove in a sleeved mode, and a filter plate is fixedly connected to the middle of the mounting plate, so that disassembly and assembly of the heat dissipation filter device can be facilitated, and noise generated by the filter device under air circulation can be reduced.

The invention discloses a welding seam automatic identification and self-adaptive welding system and method.The welding seam automatic identification and self-adaptive welding system comprises a movable fixing frame, a welding positioner, a welding robot and a central control unit, and a global wide-area 3D scanner is arranged on the movable fixing frame and used for obtaining the overall point cloud of a workpiece; a structured light vision sensor is arranged on the welding robot and is used for finely scanning a welding seam area; the central control unit is in communication connection with the global wide-area 3D scanner, the welding robot, the structured light vision sensor and the welding power source and used for scheduling the sequence of global scanning and local fine scanning. According to the method, a multi-stage collaborative visual sensing framework of global coarse positioning and local fine recognition is adopted, the contradiction between a large range and high precision is solved, meanwhile, dynamic matching of welding parameters and equipment movement is achieved through finite element simulation and real-time monitoring data closed loop, and full-process automatic quality control is achieved in large weldments for the first time.

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.

This invention provides a welding power supply system that automates the initial operation of submerged arc welding and suppresses the introduction of impurities into the weld bead after welding. The welding system (A1) for submerged arc welding includes: a welding power supply device (2) having an inverter circuit (25) and providing power; a wire feed device (5) for feeding welding wire; and a control device (1) for controlling the welding power supply device (2) and the wire feed device (5). The control device (1) feeds the welding wire in the forward direction via the wire feed device (5) at the start of welding. When the tip of the welding wire contacts the workpiece (W), the welding power supply device (2) outputs an initial current. From the contact of the welding wire until the start of forward feeding at a first welding speed, a second forward feeding speed slower than the first speed is provided as the initial current.

An example welding-type system includes a welding-type power source configured to provide power in the welding-type system, and a welding-type wire feeder configured to feed electrode wire during welding-type operations. The welding-type power source and the welding-type wire feeder form a feeder power circuit that may further include one or more welding-type cables. The welding-type power source is configured to obtain initial event data relating to an initial attachment event, and generate, based on the initial event data, an initial estimate for Cable Length Compensation (CLC) in a weld circuit that includes the welding-type power source and the welding-type wire feeder. The initial attachment event may include closing the feeder power circuit in a powered-up state or powering on the welding-type system when the feeder power circuit is already closed. The initial event data includes duration and one or both of voltage and current of the initial attachment event.

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 utility model relates to the technical field of driving power supplies, and discloses a driving power supply which comprises a driving power supply shell, a power supply mainboard is fixedly connected in the driving power supply shell, and a power supply host switching board is fixedly connected in the driving power supply shell. According to the utility model, the matching is almost stable and reliable for high-power ultrasonic equipment through setting the whole equipment, other matching current of a power supply can be synchronously driven through the built-in change-over switch, the power supply can be better matched with a load, different loads can be driven, the working adaptability is better, and the power supply is more stable and reliable. The whole equipment is set to have power supply program automatic switching output, a host or a welding power supply is driven in sequence through a BNC (bayonet nut connector), frequency searching is carried out again and the matching problem between the power supply driver and the host is matched every time an output port is switched, so that the working efficiency is improved, and the working efficiency is improved. Alarm or other abnormal problems caused by replacement of the output port are avoided.

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.

A welding power supply device according to the present invention comprises: a power supply that supplies power to an electrode for welding; and an imaging control unit that outputs, to a camera, an imaging signal on the basis of a waveform of a welding voltage and / or a welding current output by the power supply. The imaging control unit generates a waveform of a voltage prediction value that is obtained by shifting a phase of a measured value of a welding voltage forward by a prescribed time, and outputs, to the camera, an imaging signal at the timing when the voltage prediction value becomes lower than a voltage reference value.

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 utility model discloses a robot inner hole surfacing welding workstation, which particularly relates to the technical field of welding, and comprises a three-axis sliding table system, a dust removal system, a welding power supply and a system integrated control cabinet, the three-axis sliding table system mainly comprises an upside-down hanging ground rail, a ground rail sliding table, a lifting stand column, a stand column sliding table, a lifting cross beam and a cross beam sliding table. The multi-shaft operation welding robot is arranged, the welding robot is short in response time and rapid in action, the action can be repeated by the robot as long as welding parameters and movement tracks are given in the welding process of the welding robot, and the welding efficiency is greatly improved. Welding parameters such as welding current, voltage, welding speed and welding wire length have a decisive effect on a welding result. When the robot is adopted for welding, the welding parameters of each welding seam are constant, the influence factors on the welding seam quality are small, the requirement for the operation technology of workers is lowered, and therefore the product quality is guaranteed.

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.

Welding power supplies, wire feeders, and systems to measure a weld circuit resistance via communications over the weld circuit are disclosed. An example welding-type power supply includes: a power converter configured to: convert input power to output a current pulse via a weld circuit; and convert the input power to output welding-type power via the weld circuit; a voltage monitor configured to measure a power supply output voltage of the current pulse; a receiver circuit configured to receive, via the weld circuit, a communication comprising a second voltage measurement; and a controller configured to: determine a resistance of a portion of the weld circuit based on the power supply output voltage measurement, the second voltage measurement, and a weld circuit current measurement; and control the power converter to convert the input power to output the welding-type power based on a weld voltage setpoint and the impedance.

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.

The embodiment of the invention provides a splash control method and device, an inverter alternating current welding machine and a storage medium, and relates to the technical field of welding. The method comprises the following steps: detecting a necking signal in a welding process; if the necking signal is detected, a control signal of the polarity switching circuit is adjusted within a preset time, so that an originally-conducted switching device in the polarity switching circuit is turned off, and a switching device corresponding to a reverse bridge arm is conducted, and a follow current loop formed by a cable parasitic inductor of the polarity switching circuit is cut off; the current in the parasitic inductance of the cable is reversed through the current limiting path of the direct current welding power supply and the energy is consumed, so that the energy is quickly released, the metal splashing caused by liquid bridge explosion under high current is reduced, and the welding seam forming quality and the welding environment are improved.