MULTI-POINT SPOT WELDING MACHINE

• Main Author: TAKAHASHI TATSUO
• Format: Patent
• Language: English
• Published: 04.11.2010
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

PROBLEM TO BE SOLVED: To provide a multi-point spot welding machine that attains miniaturization and low price of a device and that can continuously weld a plurality of welding spots in a comparatively short period of time. SOLUTION: The multi-point spot welding machine includes: a plurality of upper electrodes; a plurality of lower electrodes 28; a pressurizing device 17 for holding and pressurizing a workpiece with the two electrodes; a welding power source; and a lower energizing route for electrically connecting the pressurizing device 17 and the welding power source. Also, in the lower energizing route, there are provided: a plurality of bus-bars 29 each separately connected to the lower electrode 28; a plurality of movable parts 37 that are each arranged on one side of the bus-bars 29 and that are supported in a displaceable manner between the contact position in contact with the corresponding bus-bars 29 and the non-contact position; a plurality of energizing cables that connect the respective movable parts 37 and the energizing cables 38; and a passage switching mechanism 40 that successively switches the contact state of the movable parts 37 relative to the plurality of bus-bars 29 by means of a plurality of rotatable cams 51. COPYRIGHT: (C)2011,JPO&INPIT