Title:
ラジアルタイヤの製造方法
Document Type and Number:
Japanese Patent JP4223652
Kind Code:
B2
Abstract:
In order to manufacture a radial tire, first, in an average waveform recording step, a waveform component of radial force variation (RFV) by a molding factor in each molding machine, and a waveform component of RFV by a vulcanization factor in each vulcanizer are respectively acquired and recorded in a computer. In a waveform synthesizing step, a radial run-out (RRO, that is, vibrations resulting from non-uniformity of a tire surface) waveform of a green tire is substituted by an RFV waveform component and is made to overlap with respective RFV waveform components of waveforms of a molding factor and a vulcanization factor, thereby obtaining an RFV composite waveform. In a selection step, a circumferential position on the green tire at which an amplitude of the RFV composite waveform becomes minimum, and the circumferential position in a vulcanization mold are selected. Further, in a vulcanization step, based on the selected circumferential positions, the green tire is disposed and vulcanized in the vulcanization mold. As a result, a radial tire of which RFV is sufficiently reduced can be obtained.
Inventors:
Teruo Tanaka
Yukio Saegusa
Yukio Saegusa
Application Number:
JP2000108400A
Publication Date:
February 12, 2009
Filing Date:
April 10, 2000
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B29C33/02; B29C35/02; B29D30/06; B29D30/52
Domestic Patent References:
| JP6182903A | ||||
| JP61235203A | ||||
| JP1145135A | ||||
| JP4193528A | ||||
| JP5116148A | ||||
| JP7329073A | ||||
| JP11020040A | ||||
| JP5169904A |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda