| 摘要 |
PROBLEM TO BE SOLVED: To provide a wire feeding device WF which can select two electrode arc welding or single electrode arc welding corresponding to each welding portion. SOLUTION: The wire feeding device comprises: one feeding motor M; a first feeding roll 61 for feeding a first welding wire 11 and a second feeding roll 62 for feeding a second welding wire 12 by being rotationally driven via a gear unit 5 by the feeding motor M; a first pressing roll 71 and a second pressing roll 72 to be arranged so as to oppose to the first feeding roll 61 and the second feeding roll 62, respectively; and a first pressing mechanism 81 and a second pressing mechanism 82 which are provided to the first pressing roll 71 and the second pressing roll 72 respectively, and can control the ON/OFF of the pressing rolls against the feeding rolls based on the press control signal Pc from the outside. COPYRIGHT: (C)2008,JPO&INPIT
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