Gas protection automatic welding control device

Abstract

The invention relates to a gas protection automatic welding control device. The gas protection automatic welding control device comprises a controller, a remote-control box and signal transmission cables. The controller is composed of a waveform control module, a numerical value display module and a switching power supply. The remote-control box is used for controlling arc starting, walking, arc quenching and stopping of a welding gun. The remote-control box is connected with a welding machine or a welding tractor through one signal transmission cable, the controller is connected with the welding machine or the welding tractor through one signal transmission cable, and the remote-control box and the controller are relatively independent. The gas protection automatic welding control device is small in size, simple in structure, flexible and convenient to operate, low in manufacturing cost, capable of achieving switching of a DC welding function and a pulsation welding function by being matched with a common economical and durable DC gas protection welding machine, and particularly suitable for welding application and popularization under the severe environment condition such as a workshop environment and an outdoor environment.

Description

Technical field [0001] This patent relates to a welding equipment, in particular to a gas shielded automatic welding control device. Background technique [0002] As automation technology penetrates into all walks of life, semi-automatic welding technology, which plays an important role in factories, is gradually being replaced by automatic welding. As the flexibility of automatic welding is poorer than that of semi-automatic welding, the performance and control requirements of welding equipment are very high. Generally, welding machines with excellent performance, precise control, multi-function, and fully digital are expensive, difficult to maintain, and require professional operation. Personnel and maintenance personnel are not suitable for popularization in most companies, especially in complex welding environments such as on-site welding and field installation. [0003] Adding an external controller on the basis of ordinary DC gas shielded welding machine can effectively solv...

AI Technical Summary

Problems solved by technology

Since the flexibility of automatic welding is relatively poor compared with semi-automatic welding, the performance and control requirements of welding equipment are very high, and welding machines with excellent performance, precise control, multi-function, and full digitalization are expensive, difficult to maintain, and require professional operation. It is not suitable for most enterprises, especially for promotion and use in complex welding environments such as on-site welding and field installation.

[0003] Adding an external controller on the basis of the ordinary DC gas shielded welding machine can effectively solve the technical problems of equipment cost and maintenance operation. The patent number is "CN201310534181.1" and the name is "AC-DC square wave controller for submerged arc welding power supply". A device that cooperates with the existing DC submerged arc welding power source to realize AC and DC function selection and square wave frequency control; the patent includes a main control module, an IGBT module and an inverter module, through which the independent main control module controls The IGBT carries out voltage and current pulse width modulation control, as well as the positive and negative balance adjustment of the welding square wave frequency and the output electrode, so that the positive and negative balance ratio of the controller can be adjusted in a wide range, the output current and voltage control are accurate, and the main control module is also Various types of fault detection can be carried out with the input power of the controller; the idea of ​​this patent can be extended to gas shielded welding. The output square wave frequency of the controller is 10-99Hz, and the positive and negative balance ratio is 20%-80%. However, it is difficult to apply the gas-shielded welding machine with ordinary DC flat characteristics. It is difficult for the inside of this kind of welding machine and its wire feeder to achieve the dynamic characteristics of 10-99Hz, which makes the welding square wave distorted. Matching the wire feeding speed will also lead to the disorder of the welding arc, increase the formation of welding spatter and welding defects, and deteriorate the weld seam formation; and the control circuit of the controller is complicated and the production cost is high

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