Invention Grant
- Patent Title: Method for molding annular member and apparatus for molding annular member
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Application No.: US14350399Application Date: 2011-10-31
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Publication No.: US09694552B2Publication Date: 2017-07-04
- Inventor: Sousuke Tsubotani , Ryoshi Miyamoto
- Applicant: Sousuke Tsubotani , Ryoshi Miyamoto
- Applicant Address: JP Osaka-shi
- Assignee: TOYO TIRE & RUBBER CO., LTD.
- Current Assignee: TOYO TIRE & RUBBER CO., LTD.
- Current Assignee Address: JP Osaka-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- International Application: PCT/JP2011/075083 WO 20111031
- International Announcement: WO2013/065102 WO 20130510
- Main IPC: B29D99/00
- IPC: B29D99/00 ; B29D30/48 ; B29C47/00 ; B29C47/02 ; B29C47/08

Abstract:
The object of the present invention is to provide a method and an apparatus for molding an annular member capable of accurately molding an annular member into a predetermined cross-sectional shape even if the annular member has a thick-walled inner peripheral part and a thin-walled outer peripheral part. The method for molding a bead filler (11) including a thick-walled inner peripheral part (11a) and a thin-walled outer peripheral part (11b), the method comprising the steps of extruding, into an annular shape, rubber (R1) by a first extruder (30) onto a molding table (20) through a first die (31) provided with an opening having the same cross-sectional shape as that of the inner peripheral part (11a) while the molding table (20) is rotated, and molding the inner peripheral part (11a); and extruding, into an annular shape, rubber by a second extruder (40) onto the molding table (20) through a second die (41) provided with an opening having the same cross-sectional shape as that of the outer peripheral part (11b) while the molding table (20) is rotated, and molding the outer peripheral part (11b).
Public/Granted literature
- US20140252673A1 METHOD FOR MOLDING ANNULAR MEMBER AND APPARATUS FOR MOLDING ANNULAR MEMBER Public/Granted day:2014-09-11
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