Patent ID: 9205574
Filing Date: 2015-12-08
Classification: B29C,B29D,B29L

Abstract:
1. A segmented mold for molding and vulcanizing a tire of given diameter (D S ), having a width (L) and a diameter (J) at an interconnect point (E), comprising shells and segments collaborating to withstand internal pressure and remain in a closed position without assistance from additional components, wherein the interconnect point (E) is a point of contact between a shell and a segment, wherein each segment comprises at lateral edges thereof a projection extending radially inwards, which projection is equipped with a lip extending axially towards the inside of the mold and having an inclined frustoconical surface of given angle (α) with respect to an axis (XX′) of the mold such that extensions of a line of each frustoconical surface on a meridian plane intercept on a radially internal side of the segment, and wherein each shell comprises a projection extending radially outwards and provided with a lip having a frustoconical surface inclined by the same angle α with respect to the axis XX′ of the mold, wherein in projection onto the meridian plane passing through the axis XX′of the mold, the distance (a) comprised between a straight line (tt′) parallel to the axis of the mold and passing through a point (T) of application of a resultant of forces (F) of contact between the shells and the segments, and a straight line (ss′) parallel to the axis of the mold situated in an extension of an internal face of a segment is equal to with a coefficient k between 0.8 and 1.4.