| 摘要 |
<p>The invention relates to a segmented mold for molding and vulcanizing a tire having a given diameter, comprising shells (1, 1') and segments (2) that engage so as to resist internal pressure and remain in a closed position without the aid of additional parts, wherein each segment (2) comprises, on the side edges thereof, a projection (26) that extends radially inward and has an edge which extends axially into the mold and which has a frustoconical surface (20) inclined at an angle relative to the axis (XX') of the mold such that the extensions of the path of each frustoconical surface on a meridian plane are cut on the radially inner side of the segment in question, wherein said shell (1, 1') comprises a projection (16) which extends radially outward and which has an edge that has a frustoconical surface (10) inclined at a single angle a relative to the axis XX' of the mold. Said segmented mold is characterized in that the mold comprises a force-limiting means consisting of an abutment (11) and a recess (21) which are arranged in the radial extension of each projection (16, 26), respectively, and each of which has a bearing surface (12, 22), wherein said bearing surfaces are to engage with one another when the internal pressure in the mold exceeds a given threshold.</p> |
