Apparatus for molding strip material
    11.
    发明授权
    Apparatus for molding strip material 失效
    用于模制条纹材料的装置

    公开(公告)号:US3829271A

    公开(公告)日:1974-08-13

    申请号:US30321272

    申请日:1972-11-02

    Applicant: TAYLOR D

    Inventor: TAYLOR D

    CPC classification number: B29D30/52 Y10S425/201

    Abstract: Uncured elastomeric material to be molded into a tire tread is fed progressively from a fixed feed station into a radially outwardly open mold cavity extending partway about the periphery of a cylindrical mold member as the member is rotated about its axis. When charged, the rotation is stopped and one or more mold sections complementary to the member are moved to closed position relative to the cavity and applied under molding pressure. While so applied, the member and sections are heated to cure the molded charge. Upon completion of the curing operation, the mold is opened, the cylndrical mold member rotated, and the molded strip is stripped progressively endwise from the cavity at a fixed discharge station. During stripping, a succeeding charge is fed progressively into the cavity, and, at the end of the stripping step, the operation is repeated. The material may be delivered to the cavity as a prepared strip of raw material at room temperature or extruded directly by an extruder into the cavity at elevated extruding temperature. A plurality of like molds may be arranged to be charged successively from a single extruder so that each mold can be stripped and charged while curing is being effected in the others, thus rendering the production of threads substantially continuous.

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