High voltage arc ignition circuit of wide voltage input argon arc welding machine

Abstract

The invention provides a high voltage arc striking circuit for a wide voltage input argon arc welding machine. The high voltage arc striking circuit comprises an inverter welding machine main loop module and a high voltage arc striking module. The inverter welding machine main loop module is used for converting an input alternating current into a high frequency direct current square wave, and a low voltage direct current needed by an inverter welding machine is obtained through rectification. The high voltage arc striking module is used for generating a high voltage pulse and acts on the inverter welding machine main loop module, so that high voltage arc striking of argon arc welding is achieved. According to the high voltage arc striking circuit for the wide voltage input argon arc welding machine, the arc striking success rate is high; a high voltage circuit is not transmitted to the high voltage arc striking circuit, thus, the interference of the high voltage arc striking circuit under a manual welding rod welding mode is reduced, and reliable arc striking of the welding machine within the 85-265 Vac input wide range is achieved; and in addition, pulse high voltage arc striking is achieved by adopting an electronic switch, so that compared with a high voltage pack arc striking mode, the welding machine is more stable.

Description

technical field [0001] The invention relates to the technical field of argon arc welding, in particular to a high voltage arc starting circuit of a wide voltage input argon arc welding machine. Background technique [0002] Argon arc welding technology is the fastest growing and most widely used welding technology at home and abroad. In recent years, argon arc welding, especially manual tungsten argon arc welding, has become an indispensable means of welding various metal structures. Since the voltages in various regions of the world are not consistent, inverter welding machines with wide voltage input are getting more and more It is more and more necessary. The high-frequency or high-voltage arc ignition method is widely used in argon arc welding machines due to its own advantages. At present, the input terminal of the high-voltage or high-frequency arc ignition circuit of most argon arc welding machines is welded. If the input voltage is low, the high-voltage or high-freq...

AI Technical Summary

Problems solved by technology

In recent years, argon arc welding, especially manual tungsten argon arc welding, has become an indispensable means of welding various metal structures. Since the voltages in various regions of the world are not consistent, inverter welding machines with wide voltage input are getting more and more It is more and more necessary. The high-frequency or high-voltage arc ignition method is widely used in argon arc welding machines due to its own advantages. At present, the input terminal of the high-voltage or high-frequency arc ignition circuit of most argon arc welding machines is welded. When the input voltage is low, the high-voltage or high-frequency arc striking effect will be affected, and the arc striking success rate cannot be 100%.

Images