Patent ID: 9731463
Date: 2017-08-15
CPC Classifications: B29D,B29K

Claim:
1. A rigid inner mold, comprising: an annular inner mold body comprising a plurality of first inner mold segments and a plurality of second inner mold segments positioned alternately with the first inner mold segments in the circumferential direction and having a tire molding surface configured to form a green tire, the annular inner mold body being configured to be put into a vulcanizing metallic mold with the green tire such that the green tire is vulcanized between the vulcanizing metallic mold and the annular inner mold body, wherein the plurality of first inner mold segments has a plurality of circumferential end surfaces inclined in a direction of which circumferential width increases toward the radially inward, the plurality of second inner mold segments has a plurality of circumferential end surfaces inclined in a direction of which circumferential width decreases toward the radially inward the annular inner mold body comprises a plurality of butting members positioned between adjacent first inner mold segment and second inner mold segment such that the butting members are fixed to one of the circumferential end surfaces of the adjacent first and second inner mold segments, and the plurality of butting members has Young's modulus Ea which is smaller than Young's modulus Eb of the first and second inner mold segments.