| 摘要 |
PROBLEM TO BE SOLVED: To provide a mold for tire vulcanization molding which can secure a necessary amount of a leak in a necessary place, reduce the generation of a defective tire during vulcanization molding, and produce a tire good in appearance and high in dimensional precision. SOLUTION: In the mold for spueless the vulcanization molding, in a place 2a in which a sipe 5 is cast in circumferential grooves to reinforce rigidity, by press-fitting (or screwing) a compulsive peeling member 6a or 6b into an exhaust hole 14 connected to the cast joint part Xa of a place to be a defective leak, the cast joint part Xa is expanded/peeled compulsively so that a necessary amount of the leak is secured in a necessary place. The member 6a is a spring pin having a slit 7 in the longitudinal direction of a cylinder 7a, and the member 6b is a straight or tapered screw member having an exhaust passage 8b in the central part of a screw cylinder 8a.
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