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1. 发明授权

US06461143B1 Injection mold for disc-shaped plastic objects and multiple injection molding unit 失效
标题翻译：注塑模具用于圆盘形塑料件和多个注塑单元
公开(公告)号：US06461143B1
公开(公告)日：2002-10-08
申请号：US09622668
申请日：2000-11-09
申请人： Martinus H. J. Voets
发明人： Martinus H. J. Voets
IPC分类号： B29C4523
CPC分类号： B29C45/263 , B29C45/2896 , B29C45/30 , B29C45/37 , B29C2045/2651
摘要： Injection mold for manufacturing disc-shaped plastic objects with a central hole, which mold comprises: a first mold part; a second mold part displaceable relative to this first mold part; which two mold parts are displaceable between a closed first position, in which they together partially bound a mold cavity corresponding to the shape of an object for manufacture, and an open second position in which a formed object can be removed; a third mold part which in an active position extends through the mold cavity and in the region of this mold cavity has a shape corresponding to the shape of the central hole, which third mold part is axially displaceable relative to the first and second mold parts between said active position and a retracted rest position; which third mold part bounds with the guide sleeve a channel which is connectable to the injection nozzle of an injection molding device, which channel can be opened and closed by means of a valve consisting of a valve seat which is formed by a part of the inner surface of a guide sleeve widening towards the mold cavity and a valve body which is formed by a widened portion on one end of the third mold part; which valve body can be displaced to the active position of the valve by the pressure of the plastic supplied through the channel and can be displaced to the rest position by a pressure member; and first heating means co-acting with guide sleeve for keeping plastic present in the channel in the plastic state.
摘要翻译：用于制造具有中心孔的圆盘形塑料物体的注射模具，该模具包括：第一模具部件; 相对于该第一模具部件移动的第二模具部件; 其中两个模具部件可以在关闭的第一位置之间移动，在该第一位置中，它们一起部分地结合与制造物体的形状相对应的模腔，以及可以移除成形物体的打开的第二位置; 主动位置中的第三模具部分延伸穿过模腔并且在该模腔的区域中具有与中心孔的形状相对应的形状，该第三模具部分可相对于第一和第二模具部件在轴向上可移动所述活动位置和缩回的休息位置; 所述第三模具部分与所述导向套筒限定可连接到注射成型装置的注射喷嘴的通道，所述通道可以通过由阀座组成的阀门打开和关闭，所述阀座由所述内部引导套筒的表面向模腔扩宽;以及阀体，其由第三模具部件的一端上的加宽部分形成; 该阀体可以通过通过通道供应的塑料的压力而移动到阀的活动位置，并且可以通过压力构件移动到静止位置; 并且第一加热装置与导向套筒共同作用以在塑性状态下保持存在于通道中的塑料。

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