| 摘要 |
A band forming drum includes a plurality of radially expandable/contractible segments, defining an outer circumferential surface of the drum for winding carcass materials thereon and thereby forming a generally cylindrical carcass band, a pair of tapered cones concentrically arranged inside said segments, each having a tapered face and capable of axially moving over about a half length of the segments, and a driving means for displacing the tapered cones toward and away from each other or synchronously in the same direction over their entire movable ranges, and also for positioning and stopping the cones at required positions. Each of the segment has an inclined surface which contacts the tapered face of each the tapered cone for converting an axial displacement of the tapered cone into a radial displacement thereof.
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