公开(公告)号：US5254305A

公开(公告)日：1993-10-19

申请号：US767032

申请日：1991-09-26

申请人： Louis Fernandez ,  Otto Hofstetter

发明人： Louis Fernandez ,  Otto Hofstetter

IPC分类号： B29C45/28 ,  B29C45/38

CPC分类号： B29C45/2806

摘要： A nozzle for injecting a moldable material has a nozzle body which defines a nozzle channel leading to the nozzle outlet. The nozzle outlet is controlled by an axially slidable nozzle pin extending coaxially through the nozzle channel. A guide sleeve slidably supports the nozzle pin until it reaches the region adjacent the nozzle outlet. As a result, the length along which the nozzle pin is exposed to the moldable material is significantly reduced, thereby substantially eliminating the bending stresses applied to the nozzle pin by the pressure asymmetries in the incoming moldable material. The nozzle pin may also be retracted fully within the guide sleeve to provide an unobstructed path for the moldable material to flow through and consolidate as it approaches the nozzle outlet. With this arrangement, the incoming moldable material may be conveyed towards the nozzle channel asymmetrically with respect to the axis of the nozzle pin without any deleterious effect.

摘要翻译： 用于注射可模制材料的喷嘴具有限定通向喷嘴出口的喷嘴通道的喷嘴体。 喷嘴出口由通过喷嘴通道同轴地延伸的可轴向滑动的喷嘴销控制。 引导套筒可滑动地支撑喷嘴销，直到其到达喷嘴出口附近的区域。 结果，喷嘴销暴露于可模制材料的长度显着减小，从而基本上消除了通过进入的可模制材料中的压力不对称性而施加到喷嘴销的弯曲应力。 喷嘴销也可以完全缩回到导向套筒内，以提供一个无阻碍的路径，以使可模制材料在接近喷嘴出口时流过并固结。 通过这种布置，可以相对于喷嘴销的轴线不可移动地将输入的可成型材料朝向喷嘴通道输送，而没有任何有害的影响。