Curing mold and method for curing a green tire

A mold for curing a tire, comprising:

• an upper shell for molding a tire sidewall;
• a lower shell for molding the tire sidewall;
• and
• a crown ring of circumferential segments for molding a tire tread, each segment comprising an upper segment part suitable for being axially separated from a lower segment part,
• wherein the mold is suitable for interacting with means for actuating a radial movement of all of the segment parts simultaneously and an axial movement of the upper part of each segment relative to the lower part of a same segment during operations to open and close the mold, and
• wherein each lower segment part comprises a holding device for holding the lower segment part in a radial position between a closed position of the mold and an open position thereof, the elements of the holding device belonging to the lower segment part and to the lower shell.

A method for molding a green tire using a curing mold,

• the curing mold comprising:
• an upper shell for molding a tire sidewall;
• a lower shell for molding the tire sidewall;
• and
• a crown ring of circumferential segments for molding a tire tread, each segment comprising an upper segment part suitable for being axially separated from a lower segment part,
• wherein the curing mold is suitable for interacting with means for actuating a radial movement of all of the segment parts simultaneously and an axial movement of the upper part of each segment relative to the lower part of a same segment during operations to open and close the mold, and
• the method comprising:
• a step of removing the tire at an end of curing when all of the segments are simultaneously moved radially outwards and when the upper part of each segment is moved axially upwards, the lower part of the segment being caused to switch from a first radially inner holding position to a second radially outer holding position.