| 摘要 |
The invention provides a laser welding device which can smoothly protect gas supply and remove smoke in a laser welding process. According to one embodiment of the invention, the laser welding device comprises a gas injection block which injects inert gas into a welding part of a welding object; an exhaust block arranged above the gas injection block and exhausting smoke and inert gas generated in a welding process; laser protective glass arranged above the gas injection block and a laser head arranged above the laser protective glass and irradiating laser beam on the welding part by a scanning mode, wherein the gas injection block includes a chamber, a gas inlet and a spray hole; the chamber is formed on the periphery of a first space penetrated by the laser beam, the gas inlet connects the chamber to the periphery to allow inert gas flow into the chamber and the spray hole connects the chamber and the first space to allow the inert gas inject to the welding part. |
