Digitization inversion arc welding machine output pole short circuit automatic protection system

An inverter arc welding machine, automatic protection technology, applied in arc welding equipment, welding equipment, manufacturing tools, etc., can solve problems such as easy to cause fire, no output pole short circuit automatic protection function, damage to the welding machine, etc.

Active Publication Date: 2013-05-15
GUANGZHOU CHANGSHENG ELECTROMECHANICAL
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since the inverter arc welding machines currently on the market in our country do not have the automatic protection function of the output pole short circuit, even if there are some insulation protection measures during welding, in the actual welding operation process, the welding machine is used in various complex use sites. Such as shipyards, field steel structures, bridge construction, etc., the welding machine is far away from the welding point, and some even reach 100 meters away, so that the output electrode circuit is often damaged, broken and short-circuited, ...

Method used

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  • Digitization inversion arc welding machine output pole short circuit automatic protection system
  • Digitization inversion arc welding machine output pole short circuit automatic protection system
  • Digitization inversion arc welding machine output pole short circuit automatic protection system

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. The schematic implementation and description of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0026] see figure 1 , which is a flow chart of the automatic protection system for the output pole short circuit of the digital inverter welding machine. It mainly includes the following steps:

[0027] S10: Obtain the feedback voltage.

[0028] S20: Compare the feedback voltage with the preset voltage value to determine whether the feedback voltage is normal, if normal, go to step S10, if not, go to step S30.

[0029] S30: the bias circuit controls the pulse width modulation control circuit to turn off the IGBT.

[0030] In the case of normal operation of the welding machine, the bias circuit controls the pulse width modulation (PWM) control circuit to turn on the ...

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Abstract

The invention discloses a digitization inversion arc welding machine output pole short circuit automatic protection system which comprises an inversion main circuit, a feedback circuit, a single-chip microcomputer circuit and a pulse width modulation control circuit, wherein the inversion main circuit is used for providing current and voltage required for a welding machine, the feedback circuit is used for obtaining output voltage of the welding machine output pole, the single-chip microcomputer circuit sends switching signals according to feedback voltage of the feedback circuit, and the pulse width modulation control circuit controls the communication and disconnection of the output current and the output voltage of the inversion main circuit according to the switching signals. Due to the fact that the single-chip microcomputer and the pulse width modulation (PWM) control circuit control the output of the welding machine, damage, caused by short circuit, of the welding machine is avoided, and short-circuit failure is removed without the need of shutdown. The digitization inversion arc welding machine output pole short circuit automatic protection system is convenient to use, fast and safe.

Description

technical field [0001] The invention relates to the field of metal welding equipment, in particular to a digital inverter arc welding machine output pole short-circuit automatic protection system. Background technique [0002] Since the inverter arc welding machines currently on the market in our country do not have the automatic protection function of the output pole short circuit, even if there are some insulation protection measures during welding, in the actual welding operation process, the welding machine is used in various complex use sites. Such as shipyards, field steel structures, bridge construction, etc., the welding machine is far away from the welding point, and some even reach 100 meters away, so that the output electrode circuit is often damaged, broken and short-circuited, resulting in frequent output of the welding machine. short circuit. If the above-mentioned abnormal situation occurs, if the on-site operators do not find it in time, it will cause the in...

Claims

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Application Information

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IPC IPC(8): B23K9/10B23K9/095
Inventor 杜长禄
Owner GUANGZHOU CHANGSHENG ELECTROMECHANICAL
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