| 摘要 |
PROBLEM TO BE SOLVED: To dissolve the problem wherein in molding of a plate molding, for example, in molding of a light guide plate of 3 inch 40 mm×70 mm, an injection molding machine of high specifications with injection speed of 1000 mm/sec and mold clamping force of 100 ton is necessary, and the injection molding machine of high specifications requires high equipment cost, and when the injection molding machine with mold clamping force of <100 ton, for example, with injection speed of 300 mm/sec and mold clamping force of 30 to 50 ton, is used, it is necessary to mold by utilizing an injection compression molding method, and further to dissolve the problem wherein, in a metallic mold for the injection compression molding method, galling in a sliding part of the metallic mold and burrs in the molding occur in relation to metallic mold structure to raise maintenance costs. SOLUTION: The metallic mold structure in which a thickness direction of a cavity 1 is arranged perpendicularly to a mold clamping direction, and mold clamping load is substitution-multiplied by a wedge-like part 3, is used in order to dispense with a molding machine of high specifications or the metallic mold structure for injection compression molding. COPYRIGHT: (C)2011,JPO&INPIT
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