Electric welding machine and circuit control board system thereof

Abstract

The invention provides a circuit control board system of an electric welding machine. The circuit control board system comprises a control board and a master board, and the control board and the master board are connected through a flat cable; the master board comprises a switch power supply circuit, an input voltage judging circuit, a voltage doubling rectifying filter circuit, a rectifying filter circuit, an inverter circuit, a transformer, a full-wave rectifying circuit, a current feedback circuit and a voltage feedback circuit. The invention further provides the electric welding machine. The electric welding machine and the circuit control board system thereof have the advantages that the electric welding machine is simple and clear in structure; production process is simplified, production hours are shortened, and production cost is reduced; connection relation is simple, and some key connection leads are replaced by copper foils, so that a fool-proof function can be achieved, and the probability of production errors is reduced; interferences by clustering of traditional connection leads are reduced by the simple connection relation; functional modules are individually laid out, so that test and maintenance are facilitated; the whole system of the electric welding machine is modularized, so that operations such as improving and upgrading of the electric welding machine are facilitated.

Description

technical field [0001] The invention relates to an electric welding machine, in particular to a circuit control board system of the electric welding machine and the electric welding machine. Background technique [0002] At present, the dual power supply (AC220V&AC380V) machines on the market, because of the input voltage judgment circuit, voltage doubler rectification circuit, inverter, secondary rectification circuit and control circuit, etc., the entire welding machine system is huge and the connection relationship between various parts Complicated, once the key lines are connected incorrectly, the entire welding machine will be damaged, which is inconvenient for manufacturing and subsequent maintenance operations. [0003] Especially for machines with dual power supplies at present, due to the complicated circuit connection relationship, there is no single-board model. Contents of the invention [0004] Aiming at the defects in the prior art, the object of the present...

AI Technical Summary

Problems solved by technology

[0002] At present, the dual power supply (AC220V&AC380V) machines on the market, because of the input voltage judgment circuit, voltage doubler rectification circuit, inverter, secondary rectification circuit and control circuit, etc., the entire welding machine system is huge and the connection relationship between various parts Complicated, once the key lines are connected incorrectly, the entire welding machine will be damaged, which is inconvenient for manufacturing and subsequent maintenance operations

[0003] Especially for machines with dual power supplies at present, due to the complicated circuit connection relationship, there is no single-board model yet.

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