| 摘要 |
PROBLEM TO BE SOLVED: To shorten cycle time during injection molding using a molding die that is ejected as a product part and a spool part of a molding are cut. SOLUTION: A gate-forming flow passage 31 of a movable die 9 is formed inward of a parting line PL of the movable die 9 and used as a submarine gate 24. A product-part ejection pin 33 and a spool-part ejection pin 34, both mounted to the movable die 9, are connected respectively to the piston rods 35a, 37a of first and second independent hydraulic cylinders 35, 37 so that the ejection pins 33, 34 operate independently of each other. The timing that the first hydraulic cylinder 35 ejects the product-part ejection pin 33 is made different from the timing that the second hydraulic cylinder 37 ejects the spool-part ejection pin 34, whereby the product part 16 and the spool part 17 of the molding 200 are discharged separately. COPYRIGHT: (C)2009,JPO&INPIT
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