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Application filed by J F T Co LtdfiledCriticalJ F T Co Ltd
Priority to MYPI20020985priorityCriticalpatent/MY129318A/en
Publication of MY129318ApublicationCriticalpatent/MY129318A/en
Molds, Cores, And Manufacturing Methods Thereof
(AREA)
Moulds For Moulding Plastics Or The Like
(AREA)
Abstract
A MOLD COOLING DEVICE INCLUDES AN AIR FEEDING AND DISCHARGE CIRCUIT (22) WHICH EFFECTS THE DRIVING BY AIR OF A PUMP SECTION (1) FOR FEEDING A COOLING LIQUID TO A FLUID FLOW PASSAGEWAY (65A) FANNED IN A MOLD (64) AND THE FEEDING OF AIR TO THE FLUID FLOW PASSAGEWAY (65A). LETTING (DX) BE THE OUTER DIAMETER- CORRESPONDING DIMENSION OF THE HOLED CONVEX PORTION (53X) OF A CAST ARTICLE (64X), (DL) BE THE OUTER DIAMETER OF THE PIN SECTION (65) OF THE MOLD (64), (TI) BE THE OUTER PERIPHERAL THICKNESS OF THE PIN SECTION (65), AND (TI) BE -5.103I-(O.62LXDX)- (1.O6BXDL)+(361X1), THE TIME (T) FOR FEEDING COOLING LIQUID TO THE FLUID FLOW PASSAGEWAY (65A) AFTER COMPLETION OF THE POURING OF MOLTEN METAL INTO THE MOLD (64) IS SET SO THAT THE RELATION T1-O.5 SECONDS STTLXO.5 SECONDS IS SATISFIED.(FIG 2)