THE LENS MOLD THAT HAVE A RUNNER STRUCTURE TO SPREAD OUT LIKE THE SPOKES OF A WHEEL

摘要

PURPOSE: A lens mold having a radial runner structure is provided to reduce the loss of pressure by a route of a runner connecting a cavity, to inject synthetic resin which is efficiently fused, and to easily assemble and disassemble the lens mold. CONSTITUTION: A first core mounting hole and a second core mounting hole which are vertically penetrated through a central part in a lower plate (24) and an upper plate (25) of a lens mold having a radial runner structure are individually formed. A cassette lower core and a cassette upper core are inserted into the first and second core mounting holes. Four first guide pin insertion holes and four second guide pin insertion holes are formed along an external edge part of the first and second core insertion holes in a predetermined gap. An upper core support plate is formed to support an upper DTM core inserted into the second core insertion hole from an upper part of the cassette upper core and an upper part of the upper DTM core.