INJECTION SYSTEM

An injection system, in an apparatus for injection-moulding plastics, comprises a manifold plate (2) having an injection nozzle (3) closed by a valve stem (7) commanded by a dual-effect pneumatic linear actuator (8, 9) wherein a piston cylinder (8) is compressed between a back plate (10) and a hot r...

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Bibliographische Detailangaben
Hauptverfasser:	RAVAGNANI ANDREA, ALLEGRI GIOVANNI
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
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Beschreibung
Zusammenfassung:	An injection system, in an apparatus for injection-moulding plastics, comprises a manifold plate (2) having an injection nozzle (3) closed by a valve stem (7) commanded by a dual-effect pneumatic linear actuator (8, 9) wherein a piston cylinder (8) is compressed between a back plate (10) and a hot runner manifold (5). The piston cylinder bounds an annular gap into which the compressed air that drives the actuator can flow.