| 摘要 |
PURPOSE:To make it possible to positively hold and rotate a loop-shaped article even if there is any change in the size or shape of the article, by alternately operating a hold means operating and closing in the direction of the axial center of the loop- shaped article for holding and releasing the article and a rotating means for holding and rotating the article when the hold means opens. CONSTITUTION:A troidal core 1 is pinched and held by clamp pieces 7, 7 from the axial center direction. At this time, clamp pieces 12, 12 are spaced apart from the outer peripheral surface of the core 1. Then, when an opening and closing driving section 13 operates to close the clamp pieces 12, 12, the core 1 is pinched from its diameter direction, and the clamp pieces 7, 7 open. Accordingly, the core 1 is being held only by a holder section 10 of a rotating and holding mechanism 6. Then, a moving plate 16 is rotated by one pitch, gamma, with the axial center O of the core 1 as a center, whereby the holder section 10 rotatively displaces. By this, the core 1 rotates by one pitch, gamma, with the axial center O as a center. Then, the clamp pieces 7, 7 close and the clamp pieces 12, 12 open. Therefore, every repetition of this operation causes the core to rotate one pitch, gamma. As a result, the wire lapping parts 1a of the core 1 are sequentially exposed in the cutout sections 9 provided in the clamp pieces 7, 7, whereby a wire can be threaded and lapped at a fixed pitch.
|
