公开(公告)号：US06871831B1

公开(公告)日：2005-03-29

申请号：US10741712

申请日：2003-12-19

申请人： André Cuny ,  Gérard Schmit ,  Eric Nowak ,  Georges Hubert Henri Gieres

发明人： André Cuny ,  Gérard Schmit ,  Eric Nowak ,  Georges Hubert Henri Gieres

IPC分类号： B29C33/02 ,  B29C33/10 ,  B29D30/06 ,  B29D30/08 ,  B29L30/00

CPC分类号： B29D30/0662 ,  B29C33/10 ,  B29D30/0606 ,  B29D2030/0617 ,  B29L2030/00

摘要： A vent for a mold having a mold cavity comprises a valve member housed within a main body sleeve and reciprocally moveable therein in an axial direction between open and closed positions. The sleeve is mounted within a mold wall and contains an expansion agent such as silicon. An increase in mold temperature causes the expansion agent to expand and move the valve member from the closed position into the open position. An external annular groove is provided within the sleeve to receive displaced mold wall material as the sleeve is press inserted into the mold wall. A tight fit of the sleeve within the mold wall results. The sleeve and valve are configured to allow air to escape in the open position. The valve member is moved to the closed position by material within the mold cavity pressing against the valve member.

摘要翻译： 具有模腔的模具的通风口包括容纳在主体套筒内的阀构件，并且在打开位置和关闭位置之间沿轴向可往复运动的阀构件。 套筒安装在模具壁内，并含有诸如硅的膨胀剂。 模具温度的升高导致膨胀剂膨胀并将阀构件从关闭位置移动到打开位置。 当套筒被压入插入模具壁中时，在套筒内设置有外部环形凹槽以接收移动的模具壁材料。 套筒紧密配合在模具壁内。 套筒和阀被构造成允许空气在打开位置逸出。 阀构件通过压在阀构件内的模腔内的材料移动到关闭位置。