| 摘要 |
PURPOSE:To facilitate the manufacture of a can spatially even in the case of the welded can with the relatively small diameter by constituting a can diameter regulation roll device of a couple of main roll devices in opposition and a base roll device. CONSTITUTION:As to a can barrel preform 5, both end faces of a part to be an overlap pass through a guide roll device 7 and a guide apparatus 6 while coming into contact with the base of a guide groove of a Z bar 8 and a lead end enters the can diameter regulation roll device 1 and in a state with the can diameter regulated, the mush-seam welding is started. The welding is performed by electrifying and pressing the overlap 5a via linear electrodes 11 and 12. After the welding is started, the can barrel preform 5 is transferred by inside and outside electrode rolls 9 and 10 via the inside and outside linear electrodes 11 and 12.
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