HEATING UNIT, TIRE HEATING DEVICE, AND TIRE MOLD MODIFYING METHOD

• Main Authors: TOSHIMA MASATAKE, FUJIEDA YASUHIKO, KUWABARA HIDEAKI, MURATA TOMOMICHI, OKADA KAZUTO, MITAMURA HISASHI
• Format: Patent
• Language: English
• Published: 26.02.2009
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A heating unit whose total impedance can be easily adjusted according to the size of the tire mold and capable of using the power supply with high power factor and a tire heating device using the same are provided. A ferromagnetic metal member (10a) heats a tire mold (M1) by heat conduction. An induction heating coil (C1) is disposed on the opposite side of the tire mold (M1) to the ferromagnetic metal member (10a) and produces lines of magnetic force to induction-heat the ferromagnetic metal member (10a). A nonmagnetic conductor (30a) is disposed on the opposite side of the induction heating coil (C1) to the ferromagnetic metal member (10a) to interrupt the lines of magnetic force produced by the induction heating coil (C1). The heating unit (100a) having these components heats the tire mold (M1) containing a tire. First spacers (71a, 72a) and second spacers (21a to 23a) are used to determine the relative positional relation between the nonmagnetic conductor (30a), the induction heating coil (C1), and the ferromagnetic metal member (10a).