| 摘要 |
PROBLEM TO BE SOLVED: To simplify a weaving device, to miniaturize and lighten a welder and to improve the operability by supporting a torch holder so as to be freely shakable to a slider, abutting a cam of the torch holder on a gear arranged on the side surface of the welder body, rotating the gear with travelling force of the welder body and shaking the torch holder. SOLUTION: When the automatic welder body is travelled with a motor 9 for travelling, a link chain 10 wound on a travelling shaft through a sprocket is endlessly turned, and together with the rotation of an intermediate sprocket 16 engaged with the link chain 10, the gear 17 is also rotated. The torch holder 5 is shakable to the slider 2, and a cam rod 13 is fitted to the tip part of the torch holder 5, and since the cam rod 13 is abutted on the gear 17, this cam rod is vertically moved along the gear form with the rotation of the gear 17. The torch holder 5 is shaken by travelling the automatic welder body 1, and a driving source and a control device, etc., of an exclusive use for the weaving device, are unnecessitated.
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