Gas-shielded welding control circuit and gas-shielded welding machine

A control circuit, gas shielded welding technology, applied in the direction of manufacturing tools, welding equipment, arc welding equipment, etc., can solve the problem of short-circuit current performance adverse arc stability, etc., to achieve the effect of improving performance, optimizing arc characteristics, and improving arc characteristics

Active Publication Date: 2020-08-14
SHANGHAI HUGONG ELECTRIC WELDING MACHINE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current performance of the short-circuit current in the gas shielded welding process is not conducive to the stability of the arc

Method used

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  • Gas-shielded welding control circuit and gas-shielded welding machine
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  • Gas-shielded welding control circuit and gas-shielded welding machine

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Embodiment Construction

[0062] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0063] figure 1 It is a schematic structural diagram of a gas shielded welding control circuit provided by an embodiment of the present invention, figure 2 is a circuit diagram of a waveform control module provided by an embodiment of the present invention, image 3 is a current waveform diagram provided by the embodiment of the present invention, see figure 1 , figure 2 and image 3 , the gas shielded welding control circuit includes: a voltage supply module 10, a voltage regulation module 20, a waveform co...

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Abstract

The invention discloses a gas-shielded welding control circuit and a gas-shielded welding machine. The gas-shielded welding control circuit comprises a voltage providing module, a voltage adjusting module, a waveform control module, a current regulator, a pulse width modulation circuit, a driving circuit, a current feedback module and a voltage feedback module, wherein the voltage providing module, the voltage adjusting module, the waveform control module, the current regulator, the pulse width modulation circuit, the driving circuit, the current feedback module and the voltage feedback moduleare connected mutually. The waveform control module comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first diode, a second diode, a first anti-reverse-connection unit, a second anti-reverse-connection unit, a first capacitor, a second capacitor, a first operating amplifier, a first power source and a second power source. The first anti-reverse-connection unit, the second anti-reverse-connection unit and the second capacitor are arranged in the waveform control module, firstly, the first capacitor is charged, and when the first capacitor is charged until conduction of the second anti-reverse-connection unit is reached, the first capacitor and the second capacitor are charged; and when conduction of the first anti-reverse-connection unit is reached, the second capacitor also participates in the process of discharging, the capacity of the capacitor is increased, the discharging speed is lowered, the current rising speed is decreased,and in this way, the arc characteristics are optimized.

Description

technical field [0001] The embodiments of the present invention relate to the field of welding technology, in particular to a gas shielded welding control circuit and a gas shielded welding machine. Background technique [0002] Gas shielded arc welding is referred to as gas shielded welding or gas electric welding. It is a fusion welding that uses an arc as a heat source and gas as a protective medium. During the welding process, the shielding gas forms a gas protective layer around the arc, which separates the arc and molten pool from the air, prevents the influence of harmful gases, and ensures the stable combustion of the arc. It is widely used in the welding field. The performance of short-circuit current in gas shielded welding directly affects the arc characteristics. [0003] However, the current performance of the short-circuit current in the gas shielded welding process is not conducive to the stability of the arc. Contents of the invention [0004] Embodiments...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/073
CPCB23K9/0731B23K9/0732B23K9/16
Inventor 不公告发明人
Owner SHANGHAI HUGONG ELECTRIC WELDING MACHINE MFG
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