MOLDING METHOD AND MOLD ASSEMBLY

PROBLEM TO BE SOLVED: To provide a mold assembly for injection molding, wherein a gate is arranged at an arbitrary position of the back side of a molded article without damaging the appearance of the molded article due to a gate cut trace or a gate trace and after-working of the gate is not needed....

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	NAKANISHI TSUTOMU, MARUICHI HIROSHI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS 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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a mold assembly for injection molding, wherein a gate is arranged at an arbitrary position of the back side of a molded article without damaging the appearance of the molded article due to a gate cut trace or a gate trace and after-working of the gate is not needed. SOLUTION: In the mold device for injection molding, a pin point gate 9 is disposed on a nesting 8 of a first mold so as to reach a mating face with a second mold 2, a resin is filled from the back side of the molded article 5 through the gate 6 formed on an inclined unit 7 according to a tunnel gate method from the pin point gate 9 and a runner 20 of channel-shape, thereby, the gate 6 is cut by utilizing the horizontal movement upon protrusion of an inclined unit 21 formed on the second mold 2 without damaging the appearance of the molded article 5 and, as the result, the after working of the gate is made unnecessary. COPYRIGHT: (C)2010,JPO&INPIT