BENDING PROCESSING METHOD OF THERMOPLASTIC RESIN TUBE

PROBLEM TO BE SOLVED: To provide a bending processing method of a thermoplastic resin tube capable of being formed into an accurate shape and not forming the baking border mark of the part received in a mold and the part not received in the mold or the bending at the boundary part of both parts. SOL...

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Bibliographische Detailangaben
1. Verfasser:	MATSUNAGA ZENJI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PIPES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a bending processing method of a thermoplastic resin tube capable of being formed into an accurate shape and not forming the baking border mark of the part received in a mold and the part not received in the mold or the bending at the boundary part of both parts. SOLUTION: The almost whole outer peripheral surface of the thermoplastic resin tube T being an article to be processed is held by the constituent wall surfaces of the bending processing grooves 10 and 20 having a semicircular cross sectional shape respectively formed to the mating surfaces of a pair of molds 1 and 2 with a heat conductivity of 30 W/mK or below and the shape holding grooves 11 and 21 continued to both sides of them so as to come into contact with the constituent wall surfaces and the forming range of the bending processing grooves 10 and 20 in both molds 1 and 2 is formed while keeping this state. The forming range of the bending processing grooves 10 and 20 in both molds 1 and 2 is held between two heaters in a heating mode. COPYRIGHT: (C)2005,JPO&NCIPI