LASER WELDING METHOD AND LASER WELDING TOOL DEVICE

• Main Authors: NAGAMATSU, Kento, HIGASHI, Hiroyuki, SHIMAZOE, Toshihiro
• Format: Patent
• Language: English; French; German
• Published: 26.01.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRICITY; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

A pair of separators (51) is overlapped and placed on a base jig (201) and thereby positioned with each other. Respective through-holes (52) thereof are positioned to the position of a pin hole (203) provided in the base jig (201). When a main jig (301) is pressed against the base jig (201) to clamp the pair of separators (51), and a pin (402) of a sub-jig (401) is inserted into the pin hole (203) to clamp the pair of separators (51) by a head (403), an annular light guiding path (LP) is formed by a gap generated between an opening (303) provided in the main jig (301) and the head (403) of the sub-jig (401), and hence a laser welding position (WP) which surrounds the through-holes (52) is exposed. The surrounding of each through-hole (52) is seamlessly laser-welded when the laser welding position (WP) is irradiated with a laser beam (LB).