CONTROLLING METHOD FOR RESIN TEMPERATURE AT PLASTIC MOLDING MACHINE

PURPOSE:To keep resin temperature always at a desired value by a method wherein two temperature measuring elements or more are arranged in the wall thickness direction of a cylinder and the temperature of molten resin in the cylinder is estimated by the measured temperature to determine the differen...

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Bibliographische Detailangaben
Hauptverfasser:	SHIBUYA TOMOE, TOGAWA AKIRA, SEKINE NOBUTAKA, IWATA MITSUO, ITOU KATSUHIKO, SANO HIDEO, NAKAMOTO MITSUSACHI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BASIC ELECTRIC ELEMENTS CABLES CONDUCTORS CONTROLLING ELECTRICITY INSULATORS MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PHYSICS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS REGULATING SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To keep resin temperature always at a desired value by a method wherein two temperature measuring elements or more are arranged in the wall thickness direction of a cylinder and the temperature of molten resin in the cylinder is estimated by the measured temperature to determine the difference from the desired temperature of resin. CONSTITUTION:At the position corresponding to the temperature measuring zone C2 of the cylinder 2, three temperature measuring holes 3a, 3b, and 3c are perforated in the same plane, at the angle interval of 120 deg. to each other along the central axis of the cylinder 2. A temperature measuring hole 3a is drilled leaving an about 5mm. thickness from the cylinder internal surface 2, a temperature measuring hole 3b is drilled leaving an about 8mm. thickness and a temperature measuring hole 3c, is drilled in the similar manner leaving an about 1.5mm. thickness. The temperature measuring elements 4a, 4b, and 4c such as thermo couples, etc. are inserted fixedly into the bottom portions of these temperature measuring holes 3a, 3b, and 3c to measure the temperature of the cylinder 2.