MANUFACTURING METHOD FOR RUBBER CYLINDER BODY, MANUFACTURING METHOD FOR RUBBER TUBE, AND VULCANIZING MOLD,申请号JP20070048311-传众专利搜索

MANUFACTURING METHOD FOR RUBBER CYLINDER BODY, MANUFACTURING METHOD FOR RUBBER TUBE, AND VULCANIZING MOLD

申请公布号：JP2008207504(A)

申请号：JP20070048311

申请日期：2007.02.28

申请公布日期：2008.09.11

申请人：

TOYO TIRE & RUBBER CO LTD

发明人：YOKOBORI SHIZUO;UETSUBO KAZUHARU;OSHIKATA MITSUO

分类号：B29C33/38;B29C33/44;B29C35/02;B29K21/00;B29L23/00

主分类号：B29C33/38

摘要：PROBLEM TO BE SOLVED: To provide a manufacturing method for a rubber tube capable of manufacturing a long rubber cylinder body while adopting a vulcanizing molding method for applying pressure from inside by covering an unvulcanized rubber cylinder with an outer mold. SOLUTION: A cylindrical rubber 5 is arranged around a metal tube 6 to constitute a mandrel 7. A reinforcement cord 12 is arranged in the circumferential direction while being tilted, to provide a reinforcement layer 11 to the cylindrical rubber 5. The cylindrical rubber 5 is reduced in diameter while being twisted and extended. An unvulcanized rubber cylinder 8 is molded around the mandrel 7 to be inserted into a vulcanizing can 9. The reduction in diameter of the cylindrical rubber 5 is released. Furthermore, the cylindrical rubber 5 is compressed and increased in diameter while being twisted, causing the unvulcanized rubber cylinder 8 to be pressurized against the inner circumferential surface of the vulcanizing can 9. COPYRIGHT: (C)2008,JPO&INPIT