COOLING STRUCTURE FOR MOLD FOR ROTATIONAL INJECTION MOLDING

PROBLEM TO BE SOLVED: To prevent a bearing from undergoing a premature failure and to extend maintenance period by suppressing temp. rise of bearing members for supporting rotation of a rotor and provided with a resin feeding path in a mold for rotational injection molding. SOLUTION: A fixed mold of...

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Bibliographische Detailangaben
Hauptverfasser:	MURAKAMI KENJI, MIFUNE SHIGEHARU
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:	PROBLEM TO BE SOLVED: To prevent a bearing from undergoing a premature failure and to extend maintenance period by suppressing temp. rise of bearing members for supporting rotation of a rotor and provided with a resin feeding path in a mold for rotational injection molding. SOLUTION: A fixed mold of a pair of molds for rotational injection molding is constituted of a base plate 51 and a rotor 52 and a sprue bush 41 for supporting rotatably the rotor through bearings B1-B3 and provided with a resin feeding path for feeding a material resin to a molding part of the rotor is provided at the central part of the base plate and a cooling liq. path for passing a cooling liq. is provided in the sprue bush.