| 主权项 |
1. An assembly for manufacturing a green tyre, comprising a drum having an axial main axis and an outwardly oriented shaping surface with respect to the axial main axis for placing a tyre component thereon comprising a layer of unvulcanized rubber, wherein the shaping surface is provided with an attachment surface for temporarily retaining at least a leading section of the tyre component, characterized in that the attachment surface comprises a number of adhering surface sections with non-adhering surface sections placed in between them, wherein the non-adhering surface sections are receded with respect to the adhering surface sections, wherein the attachment surface comprises a saw-tooth-shaped cross-section forming saw-teeth, wherein the saw-tooth-shape comprises alternately inclined ascending flanks and steep transitions from the one to the next saw-tooth, wherein at least the tip of the inclined ascending flanks of the saw-teeth form the adhering surface sections and the steep transitions and/or the parts of the inclined ascending flanks adjacent to the steep transitions form the non-adhering, receded surface sections in between the adhering surface sections, wherein the drum is further provided with a release device for releasing at least the leading section of the tyre component, wherein the release device comprises a displacement device for displacing at least the attachment surface in an axial shifting direction parallel to the attachment surface, wherein the inclined flanks are ascending in a direction opposite to the shifting direction, wherein due to the combination of the adhering surface sections and the non-adhering surface sections, the level of adhesion is large enough for retaining the leading section of the tyre component on the attachment surface during its arrangement and small enough so that the tyre component is released from the shaping surface when the attachment surface moves in the axial shifting direction, wherein the attachment surface comprises a band with the number of adhering surface sections, wherein the drum is provided with a set of arms that extend axially, wherein at a first free outer end each arm is provided with a turn-up roller, and at an opposite second outer end is hinged to an axially slidable arm support, wherein at its first outer end each arm is provided with a support member for supporting the tyre component, wherein the support member of at least one of the arms comprises the attachment surface. |
