APPARATUS FOR PRODUCING PREFORM FOR PRECISION PRESS MOLDING, METHOD FOR PRODUCING PREFORM FOR PRECISION PRESS MOLDING, APPARATUS FOR PRODUCING FORMED GLASS AND METHOD FOR PRODUCING FORMED GLASS

摘要

An apparatus for producing a preform for precision press molding is provided to enable efficient mass customization by properly placing a molding die by a dropping molding method and/or a molding die by a rifting molding method in a glass molding apparatus. An apparatus(10) for producing a preform for precision press molding has a falling device(20) which makes molten glass fall down, and a plurality of molding dies(3) which accommodate the molten glass lump flowing down from the falling device. The plurality of molding dies comprise at least one dropping molding die(31) and/or at least one rifting molding die(32). The dropping molding die accommodates a molten glass lump(7) cut by self weight of molten glass falling down from the falling device or cut by mechanical force, and molds a preform for precision press molding. The rifting molding die accommodates molten glass falling down from the falling device and goes down to mold the cut molten glass lump into a preform for precision press molding when the molten glass attains to predetermined weight.