Sumitomo Rubber Industries Limited

Kenji Mishima

Toshihiko Omokawa

Yoshinobu Miyanaga

A method and apparatus for taking up a narrow sheet member which is a tire component in which disordered winding by detecting a difference between a delivery velocity and a takeup velocity of the narrow sheet member using a dancer member, and by controlling a drive motor of a bobbin using the detected signal in such a way that the takeup velocity and the delivery velocity are equal to each other.

Method and apparatus for taking up narrow sheet member

A tire former for use in a tire building apparatus, the tire former includes a center ring provided coaxially around a drum shaft and a pair of side rings provided coaxially around the drum shaft and on opposite sides of the center ring. The center ring consists of a plurality of circumferentially separatable ring segments. The side rings are movable closer to and away from each other along the shaft to selectively provide an axially expanded state where the side rings are positioned on opposite sides of the center ring and an outer circumferential surface of the side rings is flush with an outer circumferential of the center ring; and an axially contracted state where the side rings are positioned radially inside of the center ring.

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Shirakawa, Japan

Kenji Mishima