Anti-loosening structure for nozzle of laser cutting head

The utility model relates to an anti-loosening structure for a nozzle of a laser cutting head. The anti-loosening structure comprises a capacitance head, a ceramic body, a locking ring and a cutting nozzle, the capacitor head is provided with a first gas path channel, the ceramic body is provided with a second gas path channel, the cutting nozzle is provided with a third gas path channel, and the first gas path channel, the second gas path channel and the third gas path channel are sequentially communicated. The first end of the ceramic body is installed on the capacitor head through the locking ring, and the first end of the cutting nozzle is in threaded connection with the second end of the ceramic body. After the cutting nozzle is installed on the ceramic body, the end face of the first end of the cutting nozzle abuts against the end face of the second end of the ceramic body, and the end face of the first end of the cutting nozzle is provided with the first anti-skid lines, so that the friction force betw