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1. 发明授权

US5711365A Shell molding apparatus 失效
标题翻译：外壳成型设备
公开(公告)号：US5711365A
公开(公告)日：1998-01-27
申请号：US626605
申请日：1996-04-02
申请人： Akio Shimizu , Taiti Yoshikawa , Hiroshi Suzuki , Shigeyuki Kinoshita , Keiji Wada , Yasuo Kawai
发明人： Akio Shimizu , Taiti Yoshikawa , Hiroshi Suzuki , Shigeyuki Kinoshita , Keiji Wada , Yasuo Kawai
IPC分类号： B22C13/08 , B22C17/00 , B22C15/02
CPC分类号： B22C17/00 , B22C13/08 , Y10T29/4927 , Y10T29/49272
摘要： A shell molding apparatus includes a lower die and an upper die. The lower die includes a plurality of shell molding inserts, each having the shape of a halved cylinder, spiny insert receiving recesses which are formed in undercut portions formed by curved surfaces of adjacent shell molding inserts, and spiny inserts retractably provided in the spiny insert receiving recesses, each spiny insert having a curved surface of the same curvature as the curved surface of the shell molding insert and provided with many protrusions on the curved surface. The upper die has a plurality of continuously formed recesses corresponding to the plurality of shell molding inserts of the lower die. The shell molding apparatus further includes a spiny insert actuating mechanism for projecting/retracting spiny inserts by operating withdrawal pins connected to the spiny inserts, a stopper mechanism for positioning the withdrawal pins at a position where the withdrawal pins exhibit the same thermal expansion, and a thermal expansion absorbing mechanism for the withdrawal pins. The shell molding apparatus further includes a sand releasing mechanism for preventing shell sand from stagnating between spiny insert receiving recesses and the spiny inserts, resulting in smooth performance of the spiny inserts.
摘要翻译：壳体成型装置包括下模和上模。下模具包括多个壳体模制插入件，每个壳体模制插入件具有半圆柱形的形状，多个插入件容纳凹槽，其形成在由相邻的外壳模制插入件的弯曲表面形成的底切部分中，以及可旋转地设置在多刺插入件凹槽，每个多刺插入物具有与壳模制插件的弯曲表面相同曲率的曲面，并且在弯曲表面上设置有许多突起。上模具具有多个连续形成的与下模的多个外壳模制插件对应的凹槽。外壳成型装置还包括用于通过连接到多刺插入件的操作提取销来突出/缩回多刺插入件的多刺插入致动机构，用于将取出销定位在提升销呈现相同热膨胀的位置的止动机构，以及退火针的热膨胀吸收机构。外壳成型设备还包括一个防砂壳，用于防止壳砂停滞在多刺插入物容纳凹槽和多刺插入物之间，从而使多刺插入物的平滑性能得以实现。

2. 发明授权

US5732761A Shell mold for casting a cylindrical product, apparatus for molding the shell mold, and casting method using the shell mold 失效
标题翻译：用于铸造圆柱形产品的外壳模具，用于模制外壳模具的装置和使用壳模的铸造方法
公开(公告)号：US5732761A
公开(公告)日：1998-03-31
申请号：US626606
申请日：1996-04-02
申请人： Akio Shimizu , Taiti Yoshikawa , Masaru Usui , Takehiro Nagaya , Yoshio Kashiwagi , Toshihiro Nishiwaki
发明人： Akio Shimizu , Taiti Yoshikawa , Masaru Usui , Takehiro Nagaya , Yoshio Kashiwagi , Toshihiro Nishiwaki
IPC分类号： B22C7/00 , B22C13/08 , B22D33/04
CPC分类号： B22C7/005
摘要： A shell mold includes a plurality of sleeve forming portions. Of the sleeve forming portions, at least an endmost sleeve forming portion located adjacent to a subrunner portion has a modified shape for compensating for deformation of cast sleeves caused by solidification and contraction of molten metal. A shell molding apparatus includes an upper die and a lower die which constitute a die set for molding a shell mold. The lower die is composed of shell molding inserts, each having the shape of a halved cylinder, spiny insert receiving recesses formed in the shell molding inserts, and spiny inserts retractably provided in the spiny insert receiving recesses. In a casting method using a shell mold, many protrusions of a spiny insert are reversely copied to the inner surface of a halved shell mold at the undercut portion of the inner surface, thereby forming many depressions at the undercut portion. The halved shell mold is parted from the lower die. A plurality of bore forming cores are disposed in the halved shell mold. The halved shell mold and another halved shell mold are engaged with each other, thereby forming a shell mold for casting. Casting is performed using the thus formed shell mold.
摘要翻译：壳模具包括多个套筒形成部分。在套筒形成部分中，至少位于辅助部分附近的最终套筒形成部分具有用于补偿由熔融金属的凝固和收缩引起的铸造套管变形的改进形状。外壳成型装置包括构成用于模制壳模的模具的上模和下模。下模具由壳体模制插入件组成，每个模制插入件具有半圆柱形的形状，形成在壳模制插入件中的多刺的插入物容纳凹槽，以及可伸缩地设置在多刺插入物容纳凹部中的多刺插入件。在使用壳模的铸造方法中，多根插入件的多个突起在内表面的底切部分反向复制到半壳模具的内表面，从而在底切部分处形成许多凹陷。半模壳从下模分出。多个孔形成芯设置在半壳模具中。另外一半的外壳模具和另一个半模壳体彼此接合，从而形成用于铸造的壳模。使用如此形成的壳模具进行铸造。

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