Auxiliary airflow nozzle of metal plate laser cutting machine

The utility model discloses an auxiliary airflow nozzle of a sheet metal laser cutting machine, which comprises a nozzle core, a heat dissipation ring is fixedly arranged on the side wall of the nozzle core, a protective plate is arranged at the bottom of the nozzle core, a plurality of heat dissipation plates are annularly arranged between the nozzle core and the heat dissipation ring at equal intervals, the heat dissipation plates are of right triangle structures, and the protective plate is arranged at the bottom of the nozzle core. The heat dissipation ring and the heat dissipation plate are used for increasing the heat dissipation area of the nozzle, the heat dissipation capacity of the nozzle is improved, the heat dissipation ring and the heat dissipation plate are made of silicon carbide ceramics with high heat conduction performance, the heat dissipation capacity of the nozzle can be further improved, and the nozzle is not prone to overheating in the high-heat laser cutting process. And metal slag in