Multifunctional digitized welding machine

Abstract

The invention relates to a multifunctional digitized welding machine, which comprises a full-bridge type inversion main circuit, a control circuit and a soft switch PWM (Pulse-Width Modulation) driving circuit, wherein the full-bridge type inversion main circuit is composed of an IGBT (Insulated Gate Bipolar Translator); the soft switch PWM driving circuit of a symmetric carrier is based on a CPLD (Complex Programmable Logic Device) or FPGA (Field Programmable Gate Array); the inversion main circuit comprises a rectifying filtering module, an IGBT full-bridge inversion module, a main transformer and a secondary rectifying filtering module; the control circuit comprises a DSP (Digital Signal Processor) control processor, a manual idle-dropping circuit, a regulating, detecting and sampling circuit for a feedback current and voltage signal outputted by the welding machine, a collecting and setting circuit for a feeding speed and given voltage of the welding machine, a display circuit for an interface and parameter of an external keyboard and a communication circuit connected to a PC (Personal Computer); the regulating, detecting and sampling circuit for the feedback current and voltage signal outputted by the welding machine comprises a Hall voltage sensor for detecting a feedback arc voltage outputted by the welding machine and a Hall current sensor for detecting an output current of the welding machine; and the collecting and setting circuit for the feeding speed and given voltage of the welding machine comprises a collecting circuit for a given voltage and given current, namely the feeding speed, on a panel of a feeder.

Description

technical field [0001] The invention belongs to a multifunctional digital inverter welding machine, in particular to a multifunctional digital soft switch inverter welding machine based on a digital signal processor DSP and a programmable logic controller CPLD or FPGA. Background technique [0002] Due to the large size of traditional welding machines, low efficiency, and unsatisfactory dynamic and static characteristics, the performance of welding machines is poor; the existing welding machines are still set in the way of logic circuit control, and there is no multifunctional digital welding machine design. However, the multifunctional digital welding machine is a new type of welding machine integrating manual welding, DC argon arc welding, pulse argon arc welding, gas shielded welding, pulse gas shielded welding and other welding processes. It has rich functions and stable and reliable performance. The multifunctional digital inverter welding machine is mainly controlled b...

AI Technical Summary

Problems solved by technology

[0002] Due to the large volume, low efficiency and unsatisfactory dynamic and static characteristics of the traditional welding machine, the performance of the welding machine is poor; the existing welding machine is still set in the way of logic circuit control, and there is no multi-functional digital welding machine design

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