Vorrichtung zur Feststellung von Fremdstoffen in einem Kunststoffharz

A method and a device for detecting by image processing foreign matter in a resin flowing through a passage in an extrusion head of an extruder for extruding a plastic to form a plastic-covered power cable. A see-through glass window is provided at a throat portion having a resin passage having a re...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KATO, SHIGERU, KOMETANI, TOSHIO, MIYAKE, MASATAKA, JINNO, ATSUHIDE
Format:	Patent
Sprache:	ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BASIC ELECTRIC ELEMENTS CABLES CONDUCTORS ELECTRICITY INSULATORS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PERFORMING OPERATIONS PHYSICS SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TESTING TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method and a device for detecting by image processing foreign matter in a resin flowing through a passage in an extrusion head of an extruder for extruding a plastic to form a plastic-covered power cable. A see-through glass window is provided at a throat portion having a resin passage having a reduced sectional area and provided in the extrusion head between a breaker plate at the leading end of a screw and a head body having a die and a nipple mounted therein. A light source and a camera are provided outside and opposite to the glass window to detect any minute foreign objects in the resin flowing through the throat portion.