Process and Installation for Molding an Optical Lens
    2.
    发明申请
    Process and Installation for Molding an Optical Lens 失效
    光学镜头成型的工艺和安装

    公开(公告)号:US20080230931A1

    公开(公告)日:2008-09-25

    申请号:US10598357

    申请日:2005-02-25

    IPC分类号: B29D11/00 B29C67/24

    摘要: The object of the invention is a process for molding an optical element such as a lens (2). According to the invention, the element is obtained by a reaction injection molding process comprising the steps of mixing at least two polymerizing reactants and forcing the obtained reacting mixture by an injection duct (5) for filling under pressure a scaled mold cavity (4) having an entry side (43) provided with a casting opening (42) and an evacuation side (44) and providing a laminated flow of mixture in a spout (6) having a progressive enlarging transversal section between the outlet opening (52) of the injection duct (5) and the casting opening (42) of the mold cavity (4), for avoiding any turbulent area in said laminated flow, said evacuation side (44) being provided with means (45) for evacuating air contained in the mixture during mold filling. The invention also covers the molding installation adapted for using such a process.

    摘要翻译: 本发明的目的是用于模制诸如透镜(2)的光学元件的工艺。 根据本发明,通过反应注射成型方法获得元件,该方法包括以下步骤:混合至少两种聚合反应物,并通过注射管道(5)强制所得反应混合物,以在压力下填充比例缩放的模腔(4) 设置有铸造开口(42)和排气侧(44)的进入侧(43),并且在喷射器(6)的出口(52)之间具有逐渐扩大横截面的喷口(6)中提供混合物的层压流 管道(5)和模腔(4)的铸造开口(42),用于避免所述层压流中的任何湍流区域,所述抽空侧(44)设置有用于抽空混合物中的空气的装置(45) 模具填充。 本发明还包括适于使用这种方法的成型装置。