Two-part mold for vulcanizing tires

A mold for vulcanizing a tire,

• the mold comprising a central axis and two parts, the two parts of the mold including an upper part and a lower part,
• the mold having a radially internal molding surface intended to form an external surface of all or part of a tread of the tire,
• the upper part and the lower part being able to move axially between an open position and a closed position in which the lower part and the upper part meet along a joint line that divides the radially internal molding surface into two parts,
• at least one of the two parts of the radially internal molding surface having at least one pattern comprising at least one recessed element and at least one protruding element,
• wherein each mold part has a plurality of sipe blades, all or some of the sipe blades extending substantially axially or helically on the radially internal molding surface of the mold,
• wherein all or some of the sipe blades are contiguous at one of end thereof with the at least one protruding element and contiguous at another end thereof with the at least one recessed element or with the other of the at least one of the two parts of the mold,
• wherein all or some of the sipe blades are able to move relative to the tire in a wake of the at least one protruding element, during opening of the mold,
• wherein a depth of sipe blades of the all or some of the sipe blades that are contiguous at one end thereof with the at least one protruding element is less than or equal to a depth of the at least one protruding element, and
• wherein all or some of the sipe blades deviate from a demolding direction of the tire by at most six times a thickness of a sipe blade.