Laser welding equipment and laser welding process

摘要

In order to implement lamination welding in which there is little distortion and the bonding strength is high by means of laser beam, a laser welding device comprises: a first laser beam emitting head directed to a layered base material composed of two or more layers in a superimposed direction; a first skirting roller rotatably supported by means of a first supporting member on which the first laser beam emitting head is fixed and provided with a peripheral surface which protrudes more at a base material side than a base material opposing end of the first laser beam emitting head; a second laser beam emitting head directed to the layered base material from the opposite side of the first laser beam emitting head in the superimposed direction; a second skirting roller rotatably supported by means of a second supporting member 14 on which the second laser beam emitting head is fixed and provided with a peripheral surface which protrudes more at a base material side than a base material opposing end of the second laser beam emitting head; and a first pressing means for pressing the first supporting member with respect to a supporting base holder in the superimposed direction.