| 摘要 |
The present invention relates to an air nozzle for a laser device, and comprises an air nozzle mounted on a laser-welding head of a laser-welding device having an internal hollow portion to penetrate through a laser beam emitted from the laser-welding head. The air nozzle comprises: an air injecting unit having a first injecting pipe formed inside a wall surface, having one end connected to an outer air supply pipe; and a second injecting pipe connected to the hollow portion toward the hollow portion from the other end of the first injecting pipe. The air injecting unit injects air supplied from the outer air supply pipe to a direction vertical to the laser beam penetrating through the air nozzle through the first and second injecting pipes, thereby forming an air layer. |
