公开(公告)号：US20180345406A1

公开(公告)日：2018-12-06

申请号：US15989936

申请日：2018-05-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ko NAKAMURA ,  Junichiro MAKINO ,  Takehiro YAMAMOTO

IPC: B23K26/14 ,  B23K26/21

CPC classification number: B23K26/1438 ,  B23K26/147 ,  B23K26/1476 ,  B23K26/1494 ,  B23K26/21 ,  B23K26/36

Abstract: A laser welding device includes: a laser scanner body configured to emit a laser beam to a workpiece; a jet nozzle configured to jet gas so as to cause the gas to cross an optical path of the laser beam emitted from the laser scanner body; and a guide plate disposed on the downstream side in the flow direction of the gas, from the optical path of the laser beam emitted from the laser scanner body. The guide plate is configured to change the flow direction of the gas that has crossed the optical path of the laser beam into a direction away from a laser irradiation position on the workpiece toward the downstream side in the flow direction of the gas.