| 摘要 |
PROBLEM TO BE SOLVED: To provide a small-sized tire manufacturing core simple in structure constituted so as not only to sufficiently enhance the molding precision of a green tire but also to largely permit the volumetric fluctuations of the green tire without requiring a diaphragm attaching and detaching process or the like at all and capable of reducing the fear of the transfer of unevenness or the like between the split surfaces of segments to the inner surface of a tire. SOLUTION: The tire manufacturing core is constituted by arranging a plurality of segments 2a and 2b into an annular form in a mutually close contact state to assemble them and has the outer surface shape corresponding to the inner surface shape of a product tire. Each of the segments 2a and 2b is constituted by arranging a non-compressive elastic material 7 on the outer surface of a rigid core material 6 in a layered form over the whole thereof and providing a plurality of cavities 8, in which the elastic material 7 escapes, to the outer surface of the rigid core material 6. COPYRIGHT: (C)2005,JPO&NCIPI |
