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    • 10. 发明授权
    • Ice core molded engine manifold
    • ICE核心模具发动机管
    • US5245955A
    • 1993-09-21
    • US850568
    • 1992-03-13
    • Royce H. Husted
    • Royce H. Husted
    • B29C37/00B29C45/14F02M35/10
    • B29C45/4457B29C37/0082B29C45/14622B29C45/14836F02M35/10321F02M35/10347B29C2033/525B29C2045/14131B29C2045/1445B29C33/52B29C45/14065B29C45/14311F05C2225/08
    • A method of injecting molding an intake manifold for an internal combustion engine includes forming a thin-walled hollow shell to match the interior configuration of the manifold, inserting tapered mandrels in the openings of the shell, the mandrels being configured to define grip surfaces thereon, filling the shell with water, freezing the water to form a core assembly with the mandrels secured by the action of the ice gripping the grip surfaces, supporting the core assembly by the mandrels in a mold cavity that defines the outer configuration of the manifold, and injecting flowable, hardenable material in the space between the cavity wall and the core assembly. The manifold and the core assembly are removed and the ice is melted out. The manifold is formed with flanges that have outwardly tapered interiors for ready removal of the complementarily tapered mandrels. The shell has lips that engage and are partially surrounded by the material of the flanges but set back from the mounting surfaces of the flanges. Surface protrusions are formed on the outer surface of the shell to help secure the shell to the wall of the molded manifold.
    • 注塑成型用于内燃机的进气歧管的方法包括形成薄壁中空壳体以匹配歧管的内部构造,将锥形心轴插入壳体的开口中,心轴构造成在其上限定抓握表面, 用水填充壳体,冻结水以形成芯部组件,其中心轴通过夹持抓握表面的冰的作用而固定,并通过心轴将模芯组件支撑在限定多个歧管的外部构造的模腔中;以及 在空腔壁和芯组件之间的空间中注入可流动的可硬化材料。 歧管和芯组件被移除并且冰被熔化掉。 歧管形成有具有向外锥形内部的凸缘,用于准备移除互补锥形心轴。 壳体具有接合并部分地被法兰的材料包围的唇缘,但是从凸缘的安装表面回缩。 表面突起形成在外壳的外表面上,以帮助将外壳固定到模制歧管的壁上。