Air-saving nozzle for high-power laser cutting

Abstract

The invention discloses an air-saving nozzle for high-power laser cutting. According to the technical scheme, the nozzle is characterized by comprising a nozzle body, wherein a connecting part and a nozzle channel are arranged on the nozzle body; the outlet end of the nozzle channel is provided with a telescopic cover assembly capable of axially extending and retracting; the telescopic cover assembly comprises a connecting cover pipe detachably and fixedly connected with the nozzle body and a plurality of telescopic cover pipes connected into the connecting cover pipe in an axial telescopic mode; falling limiting structures for limiting falling of the telescopic cover pipes are arranged between every two adjacent telescopic cover pipes as well as between the connecting cover pipe and one telescopic cover pipe; the end portion, away from the connecting part, of the nozzle body is provided with an elastic piece capable of driving the telescopic cover pipes to always keep the downward sliding trend; and in the process that the elastic piece drives the telescopic cover pipes to slide downwards in the axial direction, the telescopic cover pipes can be limited from falling off under theaction of the falling limiting structures, or the telescopic cover pipes at the end portions can be kept to abut against cut materials. The nozzle can intensively cut airflow so as to achieve the purpose of saving gas.

Description

technical field [0001] The invention relates to the technical field of laser cutting equipment, more specifically, it relates to an air-saving nozzle for high-power laser cutting. Background technique [0002] Laser cutting is that the horizontal laser beam emitted by the laser is transformed into a vertically downward laser beam through a 45° total reflection mirror, and then focused by a lens to form a very small spot at the focal point. When the spot is irradiated on the material to be cut, The material to be cut is quickly heated to the vaporization temperature and evaporates to form holes. With the movement of the beam to the material to be cut, and with auxiliary gas (carbon dioxide gas, oxygen, nitrogen, etc.) to blow away the molten waste, the holes are continuously formed. The slit with a very narrow width (such as about 0.1mm) completes the cutting of the material to be cut. [0003] The nozzle has a great influence on the flow rate and air pressure of the auxilia...

AI Technical Summary

Problems solved by technology

[0003] The nozzle has a great influence on the flow rate and air pressure of the auxiliary blowing during laser cutting. Laser cutting is non-contact cutting, and there is always a certain distance between the nozzle and the material to be cut, so there will be a certain amount of gas loss during the laser cutting process. cause waste of gas

[0004] For this reason, many manufacturers and people of insight have developed and developed, but so far no ideal products have come out.

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