Patent ID: 11904407
Assignee: FANUC CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. A laser welding apparatus comprising:
a laser head that emits a laser beam; and
an airflow forming unit including an emission nozzle that forms sheet-shaped airflows, wherein at least one sheet-shaped airflows formed by the airflow forming unit orthogonally traverses an optical path of the laser beam emitted from the laser head and at least one sheet-shaped airflow traverses an area parallel to or oblique to the optical path of the laser beam, wherein the sheet shaped airflows are disposed at a plurality of positions along the optical path, and
the airflow forming unit has an opening between the sheet-shaped airflows at the plurality of positions, the opening penetrating in a direction in which the airflows traverse the optical path, wherein the emission nozzle is positioned to surround the opening.