Patent ID: 7893381
Filing Date: 2011-02-22
Classification: B23K,H02K,Y10T

Abstract:
1. A welding set of a first metal member comprising: a permanent magnet member; a second metal member of a work; a work retaining part that retains said work; a pressure device that is located above said work retaining part with a work-providing space interposed; a first welding electrode that is mounted on a moving part side of said pressure device, and is made to abut on said work; a second welding electrode made to abut on said work; and a plurality of welding transformers including a first welding transformer supplying a welding current to said first and second welding electrodes; wherein said first and second welding electrodes are located on one end side of said work with respect to said first metal member and said second metal member respectively, and are located so that no said permanent magnets are interposed between respective abutment terminals of said first metal member and said second metal member, wherein said plurality of welding transformers are connected to a plurality of first welding electrodes including the first welding electrode and a plurality of second welding electrodes including the second welding electrode, wherein the plurality of first electrodes are different from the plurality of second electrodes, and wherein said plurality of welding transformers are electrically connected in parallel, and plural weld areas are simultaneously welded with the use of said plurality of first welding electrodes and said plurality of second welding electrodes, and wherein the first welding electrodes and the second welding electrodes are driven independent from one another by different mechanisms.