| 摘要 |
PROBLEM TO BE SOLVED: To improve the uniformity of a tire by a method wherein the shape of each tire air chamber is formed into a desired one in a pneumatic tire under the condition that the tire air chamber is divided in the direction of the width of the tire into a plurality of the tire chambers by partition parts formed inside the tire. SOLUTION: In order to manufacture the tire, a green tire 12 having a core 60 for constituting a main air chamber inserted therein is housed in a molding die 63 after being insertingly passed through a center post 62. At each position corresponding to a sub-air chamber 28 of the center post 62, a bladder 64 is mounted. By expanding each bladder 64, the predetermined pressure is applied from the inside of the sub-air chamber 28 to its outside. As a result, each partition part 24 is pressed against the core 60 for constituting the main air chamber and each tire side part 20 is pressed against the molding die 63. Under the state just mentioned above, vulcanizing is performed for the predetermined period of time at the predetermined temperature. COPYRIGHT: (C)2007,JPO&INPIT |
