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    • 8. 发明授权
    • Apparatus for molding pneumatic vehicular tires
    • 气动车用轮胎成型装置
    • US4043725A
    • 1977-08-23
    • US728036
    • 1976-09-30
    • Oskar Schmidt
    • Oskar Schmidt
    • B29D30/08B29C33/00B29C35/00B29C45/00B29C45/16B29C45/26B29C67/00B29D30/06B29F1/00B29C6/00B29H5/02B29H5/08
    • B29D30/06B29C45/1675B29C45/2616B29C45/2681B29D30/0661
    • A mold cavity for producing a pneumatic vehicular tire is radially expandable to form successive coaxial annular layers, e.g. carcass, reinforcing belt and tread, of the tire body. The mold cavity is defined by a stationary core, several outer annular mold walls alternately juxtaposable with the core, and a pair of opposite cheeks axially bracketing the core and the juxtaposed segments. The segments of each mold wall are movably mounted on a respective carrier ring and are radially outwardly retractable thereon to clear the cheeks whereby they can be axially moved into and out of alignment with the core. With successive operative positioning of segment sets of progressively increasing inner radii around the core, the mold cavity is expanded after each molding step preparatorily to formation of the next layer after partial hardening of the elastomeric material of the layer previously formed therein.
    • 用于生产气动车辆轮胎的模腔可径向扩张以形成连续的同轴环形层,例如, 胎体,加强带和胎面。 模具腔由固定的芯部,与芯部交替并置的多个外部环形模具壁以及一对相对的两个颊部轴向地包围芯部和并置的部分来限定。 每个模具壁的段可移动地安装在相应的载体环上并且在其上径向向外可收缩以清除面颊,由此它们可以轴向地移动到与芯不一致的位置。 随着围绕芯部逐渐增加的内半径的分段组的连续操作定位,在预成型之后,在每个模制步骤之后,将模腔膨胀以在其中预先形成的层的弹性体材料的部分硬化之后形成下一层。