Non-optical multi-piece core assembly for rapid tool change

Details Non-optical multi-piece core assembly for rapid tool change Non-optical multi-piece core assembly for rapid tool change

B - Operations, Transporting

29

C

B29C 45/26 (2006.01) B29C 33/30 (2006.01) B29D 11/00 (2006.01)

Patent

CA 2592516

An apparatus and method is provided for injection molding an ophthalmic lens mold (12). The apparatus includes an optical tool assembly (38) having an optical molding surface (56) for forming an optical surface of the ophthalmic lens mold. A non-optical tool assembly (40) is in opposed relation to the optical tool assembly (38) and together therewith forms a mold cavity (36) for forming the ophthalmic lens mold (18). The non-optical tool assembly (38) includes a core member (80) and a non-optical tool insert (82) removably secured to the core member (80). The non-optical tool insert (82) has a first molding surface (86) for forming a surface (22) of the ophthalmic lens mold (18) opposite the optical surface (16).

L~invention concerne un appareil et un procédé de moulage par injection d~un moule de lentille ophtalmique (12). L~appareil comporte un ensemble d~outil optique (38) présentant une surface de moulage optique (56) destinée à former une surface optique du moule de lentille ophtalmique. Un ensemble d~outil non optique (40) est opposé à l~ensemble d~outil optique (38) et forme avec lui une cavité de moule (36) destinée à former le moule de lentille ophtalmique (18). L~ensemble d~outil non optique (38) comporte un élément de noyau (80) et un insert d~outil non optique (82) fixé de façon amovible sur l~élément de noyau (80). L~insert d~outil non optique (82) présente une première surface de moulage (86) destinée à former une surface (22) du moule de lentille ophtalmique (18), opposée à la surface optique (16).

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