Grooved-core tooling for manufacturing pneumatic tires reinforced by stays passing through the inflation cavity

A tool suitable for manufacturing a toroidal tire comprising a crown suitable for forming a tread, a first annular bead and a second annular bead designed to make it possible to attach the tire to a mounting support such as a rim, together with a first sidewall and a second sidewall that connect the crown to the first bead and to the second bead respectively, the crown, the first and second sidewalls and the first and second beads of the tire, said tool comprising a toroidal core, a convex outer surface, referred to as the “receiving surface”, which has a shape conjugate to the inner surface of the wall of the tire and which comprises to this end a radially outer crown zone suitable for receiving components forming the crown of the tire and, axially on either side of said crown zone, a first lateral zone turned in towards the central axis and the first bead, together with a second lateral zone turned in towards the central axis and suitable for receiving components forming the second sidewall and the second bead, so that the core embodies a volume, referred to as the “reserved volume”, which is externally delimited by the receiving surface of the tire, the core has a plurality of passages that extend inside the reserved volume, below the receiving surface, and which open onto said receiving surface so that each of said passages connects the crown zone of the receiving surface to one of the first and second lateral zones so that the core can receive, inside said passages, reinforcing elements, referred to as “stays”, which are designed to be permanently incorporated into the structure of the tire and each extend in the cavity of the tire, connecting a crown anchor point situated in the crown of the tire tyre to a lateral anchor point situated in one of the sidewalls or beads of the tire.