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    • 9. 发明申请
    • INJECTION NOZZLE WITH MULTI-PIECE TIP PORTION
    • 注射喷嘴与多个提示部分
    • US20140302192A1
    • 2014-10-09
    • US14224058
    • 2014-03-24
    • Otto Manner Innovation GmbH
    • Swen SpullerGheorghe George Olaru
    • B29C45/20
    • B29C45/20B29C45/1734B29C45/1735B29C45/278B29C2045/2787B29K2995/0012B29K2995/0013
    • A hot runner nozzle assembly includes a nozzle heater, a hot runner nozzle, a nozzle tip, a nozzle tip seal surrounding the nozzle tip and a connecting element positioned to removably couple the tip seal to the nozzle tip and to create a first contact seal between the nozzle tip and the tip seal and a second annular contact seal between the tip seal and a mold component. The nozzle tip is made or shaped via a sintering process from a metal matrix composite (MMC) material having a first coefficient of thermal expansion. The tip seal is made or shaped from a ceramic based powder material, having a second coefficient of thermal expansion that is different from the first coefficient of thermal expansion. In operation this hot runner nozzle assembly provides an improved heat profile and a reduced leakage at the tip area under a wider operating processing window.
    • 热流道喷嘴组件包括喷嘴加热器,热流道喷嘴,喷嘴尖端,围绕喷嘴尖端的喷嘴尖端密封件和连接元件,该连接元件定位成将尖端密封件可拆卸地连接到喷嘴尖端,并且在第 喷嘴尖端和尖端密封件以及尖端密封件和模具部件之间的第二环形接触密封件。 通过来自具有第一热膨胀系数的金属基质复合材料(MMC)材料的烧结工艺制造或成型喷嘴头。 尖端密封件由陶瓷基粉末材料制成或成形,其具有不同于第一热膨胀系数的第二热膨胀系数。 在操作中,该热流道喷嘴组件在更宽的操作处理窗口下提供改进的热分布和在尖端区域减小的泄漏。