INJECTION MOLDING METHOD AND INJECTION MOLDING DEVICE

An injector (24a to 24d) includes a nozzle (52) provided with a valve seat (50), a valve body (42) which is seated on or separated from the valve seat (50), and a displacement means (40) for displacing the valve body (42). A resin flow passage (70) through which molten resin flows is formed inside t...

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Bibliographische Detailangaben
Hauptverfasser:	KOSHIJI TAKUMA, YASUDA MASAHIRO, HOSOI SHUN, MAEDA TOMOKI, NOBUHARA SHINICHI
Format:	Patent
Sprache:	chi ; 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
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Beschreibung
Zusammenfassung:	An injector (24a to 24d) includes a nozzle (52) provided with a valve seat (50), a valve body (42) which is seated on or separated from the valve seat (50), and a displacement means (40) for displacing the valve body (42). A resin flow passage (70) through which molten resin flows is formed inside the nozzle (52). The resin flow passage (70) includes a cross-sectional area varying portion (74) having a cross-sectional area, in a direction orthogonal to a flow direction, which varies with increasing distance toward or away from the valve body (42). The displacement means (40) is capable of stopping the valve body (42) in any position in the cross-sectional area varying portion (74). 注射器(24a～24d)具有喷嘴(52)、阀芯(42)和位移机构(40)，其中，所述喷嘴(52)设置有阀座(50)；所述阀芯(42)落位于阀座(50)或者离开阀座(50)；所述位移机构(40)使该阀芯(42)位移。在其中的喷嘴(52)的内部形成有用于使熔融树脂流动的树脂流路(70)。该树脂流路(70)包括截面面积变化部(74)，所述截面面积变化部(74)的与流动方向正交的方向上的截面面积随着接近或离开阀芯(42)而变化。位移机构(40)能够使阀芯(42)停止在截面面积变化部(74)的任意的位置。