Patent ID: 8678059

Claim:
A device for shaping a raw tire blank, the device exhibiting symmetry of revolution about a main axis, the device comprising several elements being distributed circumferentially about the main axis, each element comprising a bearing surface for bearing radially against a circumferential portion of a radially internal surface of the blank, each element being configured in such a way that a radial profile of the bearing surface is modifiable, wherein each of said elements comprises: a support and several movable members that can move radially with respect to the support independently of one another and which are axially juxtaposed, each movable member having a partial bearing surface, the partial bearing surfaces of the movable members together forming the bearing surface of the element; and positioning means for radially positioning the movable members with respect to the support, the positioning means comprising a packing piece adapted to be inserted between a base surface of the support and actuating surfaces of the movable members, a radial profile of the packing piece defining the radial profile of the bearing surface of the element, wherein each packing piece is rigid such that it is configured to be capable of axially sliding into place beneath the movable members of the element with which it is used, simultaneously sliding against the actuating surfaces of the movable members of the element in question while overcoming an elastic force which biases each of the movable members of the element in question towards the base of the element in question.