METAL INJECTION-MOLDING DEVICE

PROBLEM TO BE SOLVED: To provide a metal injection-molding device provided with a structure for preventing deformation in a molded product caused by a tension due to the cutting-off of a gate when molds are opened and the molded product is taken to a cavity side. SOLUTION: Recessed parts 13a, 13b ar...

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Bibliographische Detailangaben
Hauptverfasser:	TAKARA AKIRA, MATSUMURA KEIZO, SOYAMA TAKAHIKO
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 FOUNDRY MOULDING 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:	PROBLEM TO BE SOLVED: To provide a metal injection-molding device provided with a structure for preventing deformation in a molded product caused by a tension due to the cutting-off of a gate when molds are opened and the molded product is taken to a cavity side. SOLUTION: Recessed parts 13a, 13b are formed so as to form undercut shapes 5a and 5b in the molded product 4 to a core 2 or a projecting pin. Since the molded product 4 is held to the core 2 by the undercut shapes 5a, 5b, it is not shifted into the cavity 1 side with the tension breaking force at the cutting-off of the gate when the molds are opened and also, the deformation is not developed.