Initial positioning and anti-collision device of plasma cutter

Abstract

The invention relates to an initial positioning and anti-collision device of a plasma cutter. A cylinder is vertically fixed on a mounting plate; a piston rod of the cylinder is connected to the lower part of a connecting frame; one end of a detecting rod is also hinged at the lower part of the connecting frame; the upper part of the connecting frame is connected to the bottom end of a telescopic rod; an induction rod is arranged in an inner hole of the telescopic rod; the head part of the induction rod is propped and supported by the detecting rod; a spring is mounted between a head step of the induction rod and the connecting frame; the upper end of the telescopic rod is provided with an approaching switch; the front end of the mounting plate is provided with a middle bracket; and an anti-collision device of a cutting torch is connected with the middle bracket. According to the invention, before plasma cutting, initial positioning is first carried out by an initial positioning device; during cutting, the cutting torch is automatically controlled to lift by an arc voltage, so that the distance between the cutting torch and a steel sheet is always kept consistent; and through the anti-collision device, an expensive plasma cutting torch is reliably protected against being damaged. The initial positioning and anti-collision device of the plasma cutter, provided by the invention, has the advantages of simple structure, accuracy for positioning, small fault rate and high use efficiency.

Description

technical field [0001] The invention relates to the technical field of plasma cutting equipment, in particular to an initial positioning and anti-collision device used on a gantry type numerical control plasma cutting equipment. Background technique [0002] In the Chinese patent "CN200820037043.7---Plasma initial positioning and anti-collision device" applied by the applicant, because the proximity switch is too close to the cutting torch, the slag is easily splashed on the nylon tube where the proximity switch is installed during work, making the nylon The tube melts; the slag sticks to the nylon tube, so that the proximity switch is always in an induction state, and cannot perform the next action. The maintenance rate is relatively high, thus affecting work efficiency. Contents of the invention [0003] The purpose of the present invention is to overcome the above disadvantages and provide a more reliable initial positioning and anti-collision device for plasma cutting ...

AI Technical Summary

Problems solved by technology

[0002] In the Chinese patent "CN200820037043.7---Plasma initial positioning and anti-collision device" applied by the applicant, because the proximity switch is too close to the cutting torch, the slag is easily splashed on the nylon tube where the proximity switc

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