Novel movable core used for an alternating current arc welding machine

Abstract

The invention discloses a novel movable core used for an alternating current arc welding machine. Rectangular design is adopted, the novel movable core is provided with a plurality of stacks, the direction of the stacks is the same with the direction of a static core lamination stack; an adjusting screw rod at one side of the novel movable core is also provided with a small round nut, and the small round nut pulls backward and forward to adjust the direction of the stacks of the novel movable core. The novel movable core disclosed by the invention has the beneficial effects of smart design, simple structure, small space area, convenience in processing and mounting processes and low loss. A rectangle movable core design is adopted, and the problem that short circuit ring heat production is caused by the fact that the traditional trapezoid movable core is easy to collide with a static core under the condition of low current is thoroughly solved.

Description

technical field [0001] The invention relates to the field of welding machines, in particular to a novel moving iron core for AC arc welding machines. Background technique [0002] Arc welding machine, also known as arc welding transformer, is a special transformer that converts the alternating current of network voltage into low-voltage alternating current suitable for arc welding. There are three main types of arc welding machines: moving iron core type, homogeneous type and moving coil type. It has the advantages of simple structure, easy manufacture and repair, low cost and high efficiency. However, its current waveform is a sine wave, the output is an AC drop external characteristic, the arc stability is poor, and the power factor is low, but the phenomenon of magnetic deflection blowing rarely occurs, and the no-load loss is small. It is generally used in manual arc welding, submerged arc welding and welding. Tungsten argon arc welding and other methods. [0003] How...

AI Technical Summary

Problems solved by technology

However, its current waveform is a sine wave, the output is an AC drop external characteristic, the arc stability is poor, and the power factor is low, but the magnetic deflection phenomenon rarely occurs, and the no-load loss is small. It is generally used in manual arc welding, submerged arc welding and welding. Tungsten argon arc welding and other methods

[0003] However, the moving iron core of the traditional arc welding transformer adopts a trapezoidal design, and the lamination direction of the moving iron core and the lamination direction of the static iron core are intersected and staggered. Pull up and down, relatively bulky

Moreover, the trapezoidal moving iron core is easy to collide with the static iron core under the condition of small current to form a short circuit and generate heat.

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