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    • 5. 发明授权
    • Extrusion head for producing flat profiles from rubber or plastics
material
    • 用于从橡胶或塑料材料生产扁平型材的挤出头
    • US4653994A
    • 1987-03-31
    • US867547
    • 1986-05-28
    • Gerd Capelle
    • Gerd Capelle
    • B29C47/06B29C47/04B29C47/08B29C47/12B29C47/14B29C47/56B29K103/00B29L7/00B29L9/00B29L30/00B29C47/30
    • B29C47/0822B29C47/062B29C47/56B29C47/0019B29C47/003B29L2030/002
    • An extrusion head is provided for extruding flat profiles for producing tread strip portions of vehicle tires from mixtures of rubber or plastics materials, which permits one of the constituents such as the tread strip mixture to be changed without adversely affecting the other constituent parts of the mixture, such as the lateral rubber strip mixtures and the base rubber layer. This is achieved by suitably deflecting the flow channels for the lateral rubber layers in a front template. The flow channel for the lateral strips enters the template below the flow channel for the tread strip but discharges alongside the lateral edges of the tread strip. The head comprises a fixed central portion and pivotable upper and lower portions, the flow channels for the constituents of the mixture being defined by channels formed in insert members located between the head portions. By so doing, the flow channels for the base layer and for the lateral strips can be formed in one of the insert members leaving only the flow channel for the tread strip to be formed in the other insert member. Since it is the tread strip mixture which is most frequently changed, this can now be effected without adversely affecting the other two mixtures.
    • 提供挤出头,用于挤出扁平型材,用于从橡胶或塑料材料的混合物制造车辆轮胎的胎面带部分,其允许诸如胎面胶带混合物的组分之一被改变而不会不利地影响混合物的其它组成部分 ,例如侧向橡胶条混合物和基底橡胶层。 这通过适当地偏转前模板中的侧橡胶层的流动通道来实现。 横向条带的流动通道进入胎面条的流动通道下面的模板,但是沿着胎面带的侧边缘排放。 头部包括固定的中心部分和可枢转的上部和下部,用于混合物的部件的流动通道由形成在位于头部之间的插入部件中的通道限定。 通过这样做,用于基层和横向条的流动通道可以形成在一个插入件中,仅留下用于胎面带的流动通道形成在另一个插入件中。 由于是最经常改变的胎面胶带混合物,现在可以在不影响其它两种混合物的情况下进行。