Claims
- 1. A method for manufacturing a tire in which a tread ring is held by segments, which are arranged along a circumferential direction and reciprocated in a radial direction, of a transfer and is sent to a green tire building drum and said green tire building drum unites said tread ring and a carcass ply to form a green tire, wherein the improvement comprises:measuring a timing of each segment of said transfer to release the tread ring; measuring a deviation of said green tire from circularity while the green tire is clamped by said green tire building drum; determining the timing of the segments of the transfer to release the tread ring for a subsequently manufactured tire by comparing said measured deviation and said measured timing; controlling the timing of each segment to release the tread ring of the subsequently manufactured tire using said determined timing to improve radial runout of the subsequently manufactured tire.
- 2. An apparatus for manufacturing a tire provided with a green tire building drum for uniting a tread ring and a carcass ply to form a green tire and a transfer having segments arranged along a circumferential direction and reciprocated in a radial direction for holding and sending the tread ring to the green tire building drum, wherein the improvement comprises:a means for measuring a deviation of said green tire from circularity while the green tire is clamped by said green tire building drum; a means for measuring timing of each segment of said transfer to release the tread ring; an operation means for comparing said deviation measured by said means for measuring deviation and measured timing measured by said means for measuring timing and determining a next timing upon a subsequently manufactured tire at which each segment releases the tread ring; and a means for controlling timing of each segment to release the tread ring of the subsequently manufactured tire to coincide with a predetermined timing determined by said operation means.
Priority Claims (4)
Number |
Date |
Country |
Kind |
8-181516 |
Jun 1996 |
JP |
|
8-183987 |
Jun 1996 |
JP |
|
8-183988 |
Jun 1996 |
JP |
|
9-022175 |
Jan 1997 |
JP |
|
CROSS REFERENCE TO RELATED U.S. APPLICATION
The instant application is a divisional application of U.S. Ser. No. 08/872,880 filed Jun. 11, 1997, now U.S. Pat. No. 5,882,452.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
6-182903 |
Jul 1994 |
JP |