The provided is a mold for forming a tire and a tire production method that can reduce the driving force required to drive the segment in the initial stage of releasing a tire from the mold. The mold for forming a tire comprises: a circular tread molding portion divided into a plurality of circumferentially aligned segments; and a tilting mechanism that tilts the segments radially outward when the tread molding portion is opened radially outward, and the tilting mechanism reverts the tilt of the segments after the tread molding portion is opened.

Provided are a mold for forming a tire including a tread molding part which is configured to be opened and closed by moving a plurality of segments in a radial direction, and a tire production method using the same. In the mold, each of the segments includes a holder; a plurality of design surface dividing mold parts disposed in a circumferentially arranged manner on a radially inner side of the holder; and a plate spring member to which the plurality of the design surface are fixed and in which both ends of the plate spring member in a circumferential direction are fixed to the holder, and when the tread molding part is opened, by elastic deformation of the plate spring member, the plurality of the design surface are moved in a direction away from the holder with the plurality of the design surface dividing mold parts being rotated.

A mold (10) for curing a tire comprises: an upper shell (16a) for molding a tire sidewall, a lower shell (16b) for molding a tire sidewall, and a crown ring (20) of circumferential segments for molding a tire tread, each segment comprising an upper segment part (20a) suitable for being axially separated from a lower segment part (20b), the curing mold being suitable for interacting with means for actuating a radial movement of all of the segment parts simultaneously. Each lower segment part (20b) comprises a device (100) for holding the lower segment part (20b) in a radial position between a closed position of the mold and an open position thereof, the elements of the holding device (100) belonging to the lower segment part and to the lower shell (16b).

A chamber for vulcanizing a tire comprises filamentary load-bearing elements arranged within the internal cavity, the chamber being delimited by an operating upper plate and a lower plate, the two beads of the tire being fastened to the circumference of the plates, the interior of the chamber having a vertical axis XX and horizontal axis YY passing through the center, and comprising at least one heater, a circulation blower for circulating a heat-transfer fluid, and a deflecting first portion and a second portion for directing the flow of heat-transfer fluid.