All-digital integrated circuit for realizing arc extinguishing control logic of gas shielded welding machine

Abstract

The invention relates to an all-digital integrated circuit for realizing arc extinguishing control logic of a gas shielded welding machine. The all-digital integrated circuit is characterized in that a first switch can be selectively connected with an arc extinguishing connection end, a conventional connection end or an self-locking connection end in a corresponding manner; the detection of an switching state of an input signal under the switching operation of a welding gun is realized according to signals generated when the first switch is switched to the corresponding positions of the conventional connection end, the self-locking connection end and the arc extinguishing connection end; and then the purposes of controlling the output signal of the welding machine and converting welding conditions are achieved according to the changing of the pre-set conventional, self-locking and arc extinguishing connection states according to the state of a second switch. An arc extinguishing mode is adopted for welding thick pieces with long welding joints, so that an arc crater formed in the arc extinguishing part is avoided; in the arc extinguishing state, the welding machine is converted to lower welding current or voltage to fill the arc crater, so that the formed welding joint is attractive; as the all-digital integrated circuit design is adopted, the requirement on accomplishing the complicated arc extinguishing logic control with fewest elements is realized; and the all-digital integrated circuit is simple and highly reliable.

Description

technical field [0001] The invention relates to an all-digital integrated circuit, in particular to an all-digital integrated circuit for realizing the arc extinguishing control logic of a gas-shielded welding machine, belonging to the technical field of digital electronic control of a gas-shielded welding machine. Background technique [0002] High-efficiency, energy-saving and environmentally friendly electronically controlled gas shielded welding machines have been widely used in efficient and high-quality welding of various metal materials. Various types of CO 2 / MAG (metal active-gas welding) / MIG (metal inert-gas welding) or TIG (Tungsten Inert Gas welding) gas shielded welding machine program control is complicated, and a large number of electronic components are used to meet the circuit design requirements, resulting in control circuit The structure is complex and the reliability is low. Contents of the invention [0003] The purpose of the present invention is t...

AI Technical Summary

Problems solved by technology

Various types of CO 2 / MAG (metal active-gas welding) / MIG (metal inert-gas welding) or TIG (Tungsten Inert Gas welding) gas shielded welding machine program control is complicated, and a large number of electronic components are used to meet the circuit design requirements, resulting in control circuit Complex structure and low reliability

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