| 摘要 |
PROBLEM TO BE SOLVED: To provide the subject mold capable of producing a tire good in appearance and high in dimensional accuracy and capable of reducing the generation of an inferior tire at the time of vulcanization and molding. SOLUTION: In a split type mold for vulcanizing and molding a tire, since the sipe casting part, which flies out of a pattern core of a second shot at the time of second shot casting, interferes with a first piece block 3a when a piece 3 equipped with a sipe 6 is produced, an escape groove 6a is required in the first piece block 3a. Then, the escape groove 6a is provided on the lower mold 8a8 of a first shot mold 8 or the first piece block 3a (cast article) to enable the casting-out of the sipe 6 from a planting fine groove. As a processing method of the escape groove 6a, a method forming the escape groove 6a on the lower mold 8a8 of the first shot mold 8 and a method for applying post- processing to the first piece block 3a (cast article) of the first shot are considered.
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