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    • 55. 发明授权
    • Retention mold for bonding tire tube
    • 用于粘接轮胎管的保持模具
    • US06338766B1
    • 2002-01-15
    • US09253002
    • 1999-02-19
    • Toshio Yamagiwa
    • Toshio Yamagiwa
    • B29D2324
    • B29C65/00B29C66/1142B29C66/5241B29C66/71B29K2021/00B29L2022/007B29L2023/245B29L2031/601B60C5/04Y10T152/10702B29K2007/00
    • To make it possible to precisely bond a tube blank having thickened portions projecting from an outer wall surface of a retention mold. A tube blank is formed of natural rubber and is provided with an air chamber peripheral wall, a sealant chamber peripheral wall and a partition. The tube blank has ends held by the retention mold which are bonded in an annular shape. The retention molds include an upper mold and a lower mold having respective retaining surfaces. Indents are provided in the retaining surface of the lower mold for engaging with the thickened portions projecting from the air chamber peripheral wall of the tube blank. By forming the indents in the retention surfaces of the lower molds, it is possible to hold the two ends of the tube blank without warping the tube blank and to precisely bond the two ends of the tube blank together.
    • 使得可以精确地结合具有从保持模具的外壁表面突出的加厚部分的管坯。 管坯由天然橡胶形成,并且设置有空气室周壁,密封剂室周壁和隔板。 管坯具有由保持模具保持的端部,其结合为环形。 保持模具包括具有相应保持表面的上模具和下模具。 凹部设置在下模具的保持表面中,用于与从管坯的空气室周壁突出的加厚部分接合。 通过在下模具的保持表面中形成凹口,可以将管坯的两端保持而不会翘曲管坯,并将管坯的两端精确地结合在一起。