IGBT inverter multi-function welding machine with liquid crystal display and multi-input voice prompt functions

Abstract

The invention relates to an IGBT inverter multi-function welding machine with liquid crystal display and multi-input voice prompt functions. The power source of the IGBT inverter multi-function welding machine is 220-240V or 110V-120V; and the interior of the IGBT inverter multi-function welding machine is designed to be of a left-and-right side structure. Components such as a circuit board, a cooling fan and the like are arranged on one side of the interior of the IGBT inverter multi-function welding machine; components such as a wire feeding mechanism and the like are arranged on the other side of the interior of the IGBT inverter multi-function welding machine; the circuit board is designed into three pieces, one piece is a liquid crystal display and operation control board, the secondpiece is a switching control board which can realize automatic identification, detection and conversion control of an input voltage, and the third piece is a main control board; and the IGBT invertermulti-function welding machine is mainly composed of an inverter main circuit consisting of input voltage detection, power-on buffering, rectification and filtering, IGBT inverter, a main transformer,output rectification, filtering and the like, a switching power circuit, an inverter PWM and IGBT drive circuit, a wire feeding and solenoid valve control circuit, an output characteristic control circuit and the like. The IGBT inverter multi-function welding machine not only has a multi-function welding method, but also solves the problem of narrow application range of a multi-power-source and single-function welding machine.

Description

technical field [0001] The invention relates to a MIG / MAG gas shielded welding machine with liquid crystal display, multi-input voltage, operation prompt sound, IGBT inverter, manual arc welding and argon arc welding functions. It belongs to the technical field of inverter welding machines. Background technique [0002] At present, the competition in the inverter MIG / MAG gas shielded welding machine product market is very fierce, which is not only reflected in the advancement and advantages of technology, but also largely depends on the welding machine's circuit and its functions and structural design. . [0003] In the domestic and foreign markets, the rated current of IGBT inverter MIG / MAG gas shielded welding machines is usually at the level of 160~650A (load duration 100~35%). Most of these welding machine products are MIG / MAG gas shielded welding with a single power supply, and cannot be used for other power supply voltages or welding functions (such as manual welding...

AI Technical Summary

Problems solved by technology

Most of these welding machine products are MIG/MAG gas shielded welding with a single power supply, and cannot be used for other power supply voltages or welding functions (such as manual welding, etc.)

At the same time,

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