A laser cutting head air pressure detection device and its detection method

Abstract

The invention provides a laser cutting head air pressure detection device and its detection method, comprising a hollow shell, a lower protective mirror seat, and a nozzle, the end of the shell away from the optical fiber is provided with a lower protective mirror seat, The base is fixedly connected; the end of the lower protective mirror base away from the optical fiber is provided with a nozzle, and the nozzle is fixedly connected with the lower protective mirror base; the housing, the lower protective mirror base and the nozzle are connected in sequence to form a through laser path; the housing has a closed first Inner cavity; the nozzle is provided with a through air intake pipe, the air intake pipe is connected with the laser passage and the gas source respectively, and the air intake pipe guides the auxiliary cutting gas into the laser passage; it is characterized in that it also includes an air pressure detection module; The air pressure in the inner cavity and the laser path is detected, and the detected air pressure is compared with the preset value to determine whether the air pressure exceeds the limit. The invention is convenient for timely inspection and maintenance by actively detecting the air pressure inside the housing and the nozzle.

Description

technical field [0001] The invention relates to the field of laser cutting equipment, in particular to a laser cutting head air pressure detection device and a detection method thereof. Background technique [0002] Laser processing equipment is a device that uses the advantages of high energy and high efficiency of laser to make production and processing faster and safer. Laser processing equipment mainly includes applications such as laser welding, laser cutting, laser marking and laser drilling. Among them, laser cutting is to use the high-power-density laser beam emitted by the laser cutting head to quickly raise the surface temperature of the metal material to the boiling point, thereby completing the cutting operation. Good cutting effect. [0003] The laser cutting head mainly includes the laser interface part that guides the optical fiber into the cutting head, the collimating lens assembly that converges the divergent light of the optical fiber, the focusing lens ...

AI Technical Summary

Problems solved by technology

Poor cutting quality often occurs during laser cutting, which is mainly caused by contamination of the lens and unstable airflow

Because the gas in the working environment of the laser cutting head generally contains dust and water vapor, it will pollute the lens

In order to ensure the reliability of the laser cutting head, the usual method is to manually clean and replace the protective lens regularly. It is very inconvenient to judge the airtightness of the cutting head or whether the nozzle air is stable.

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