Title:
GREEN TIRE SHAPE CORRECTING METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/046975
Kind Code:
A1
Abstract:
Shape correction of the upper and lower beads and correction of the width between the upper and lower beads of a green tire are made in a short working time. A green tire (G) is horizontally mounted on a mount (3) which supports a lower bead correcting device (10). A diametrically expandable/contractible locking member (13) for the lower bead correcting device (10) is locked from inside to a lower bead (Bl) of the green tire (G) mounted on the mount (3). A locking member (29) for the upper bead correcting device (20) is locked from inside to an upper bead (Bu) of the green tire (G) mounted on the mount (3). The lower bead correcting device (10) diametrically moves the locking member (13) to pressingly correct the lower bead (Bl) of the green tire (G) to the shape of a true circle of predetermined diameter, while the upper bead correcting device (20) moves the locking member (29) to pressingly correct the upper bead (Bu) of the green tire (G ) to the shape of a true circle of predetermined diameter, and substantially simultaneously, the upper bead correcting device (20) or lower bead correcting device (10) is raised and lowered to correct the width (B) between the upper and lower beads (Bu, Bl).
Inventors:
YOSHINO TOSHIKATSU (JP)
IMAIZUMI TSUYOSHI (JP)
IMAIZUMI TSUYOSHI (JP)
Application Number:
PCT/JP2004/016736
Publication Date:
May 26, 2005
Filing Date:
November 11, 2004
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
YOSHINO TOSHIKATSU (JP)
IMAIZUMI TSUYOSHI (JP)
YOSHINO TOSHIKATSU (JP)
IMAIZUMI TSUYOSHI (JP)
International Classes:
B29D30/06; (IPC1-7): B29D30/06; B29C33/02
Foreign References:
| JPS60264236A | 1985-12-27 | |||
| JPS5818724U | 1983-02-04 | |||
| JPS4624773B1 | 1971-07-16 |
Other References:
See also references of EP 1688240A4
Attorney, Agent or Firm:
Ehara, Nozomu (Daini Taki Building 4, Kanda-Tacho 2-chome, Chiyoda-k, Tokyo 46, JP)
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