| 摘要 |
A shaping drum for a tire having two bead holding systems mounted facing one another on a central shaft. Each of the bead holding systems includes a support mounted to be movable axially relative to the shaft. On each support there is mounted an assembly which includes a plurality of rigid segments and an elastic membrane which surrounds them. The rigid segments are each mounted on the support and swing about an articulation, the axis of which is perpendicular to a radial plane. A seat is formed on each assembly, the seat being arranged axially on the inside of the articulations, the articulations forming a crown on the support. The elastic membrane is fixed to the support axially on the inside and on the outside of the crown of articulations.
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