Laser welding equipment

A laser welding device comprising:

• a head holder movably supported in a z direction with respect to a base holder;
• a laser beam emitting head fixed on the head holder to emit a laser beam in the z direction;
• a first set of rollers having a circumferential surface opposing an outer surface of a layered base material positioned below a laser beam emitting nozzle of the laser beam emitting head and a flange opposing an end surface in an edge of the layered base material, the outer surface being parallel to the z direction;
• a second set of rollers having a circumferential surface opposing the other outer surface opposing the outer surface;
• a first member rotatably supporting the first set of rollers;
• an adjustment mechanism coupling the first member with the laser beam emitting head so that a position in a direction of the thickness of the layered base material is adjustable;
• a second member rotatably supporting the second set of rollers;
• a guiding mechanism supporting the second member on the laser beam emitting head so that the second member is reciprocatably supported in the thickness direction of the layered base material;
• a pressing means for driving the second member in a direction in which the circumferential surface of the second set of rollers approaches the circumferential surface of the first set of rollers;
• and
• a means for driving the head holder along the z direction with respect to the base holder so that the flange of the first set of rollers is along the end surface of the edge of the layered base material.