TWO-STAGE EJECTOR FOR INJECTION MOLDING

PURPOSE:To enable a two-stage ejector pin to be set at any position by enabling an ejector to be miniaturized by a method wherein a clearance between positioning pins supporting a second ejector pin pushed up with an ejector plate, is set at a size exceeding a diameter of an ejector rod. CONSTITUTIO...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	NAKAO SHUNJI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES PERFORMING OPERATIONS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To enable a two-stage ejector pin to be set at any position by enabling an ejector to be miniaturized by a method wherein a clearance between positioning pins supporting a second ejector pin pushed up with an ejector plate, is set at a size exceeding a diameter of an ejector rod. CONSTITUTION:At a point of time when a first ejector pin 9 has finished ejection of a molded product 21, a second ejector pin 15 is pushed with an ejector plate 7 to start ejection of a molded product 22, and the molded product 22 is ejected from an inside of a second cavity 12. Since the second ejector pin 15 is opposed to the ejector plate 7 by keeping a specific clearance H with a plurality of positioning pins 18, after the first ejector pin 9 has finished ejecting operation, the second ejector pin 15 starts ejection by a specific time lag. Then, since a clearance H between the positioning pins 18 is set at a size exceeding a diameter D of an ejector rod 6, the second ejector pin 15 can be set at any position.