Bridgestone Corporation

Masayuki Ichinose

Akio Obayashi

Yuusuke Tamura

Taizo Ito

Toshiyuki Horie

Apparatus and method for correcting the shape of a green tire configured so that, even if a side wall portion (S) is subjected to local crushing deformation during its temporary storage, such deformation is effectively corrected to easily improve the tire uniformity. A pressurized fluid is applied to an inner chamber of a green tire (G) having bead portions (B) held coaxially by upper and lower holders (), for setting the tread portion (T) of the green tire (G) coaxially to the bead portions (B). The side wall portions (S) is deformed outward and applied with an internal tension in the meridian direction, for correcting the shape of the green tire (G). Crushing deformation on the side wall portion (S) is thereby effectively recovered and corrected before vulcanization.

Apparatus for correcting shape of green tire

A vulcanization apparatus provided with a vulcanization vessel for vulcanizing a green tire and a suction line for sucking out gas from inside the vulcanization vessel after the vulcanization vessel has been opened. Accordingly, oily smoke generated when vulcanized rubber has been removed from a bladder and an inner wall of a mold can be more efficiently discharged than in cases in which gas inside a vulcanization vessel is sucked out and additional air is introduced into the vulcanization vessel only prior to opening the vulcanization vessel.

Vulcanized tire vulcanization apparatus

Vulcanized tire manufacturing method and vulcanization apparatus

A rimof a post cure inflatorcan be changed in an easy and safety manner, while the amount of energy consumption is reduced. A inflator bodyhaving the lower rimcan be located at a lower position, and the upper rimcan be moved downward to a lower position. Thus, the lower rimand the upper rimcan be changed at the lower position in response to the change of the type of the tire to be manufactured, whereby the changing operation is made easy and safety. Further, the upper rimmoves upward. With this configuration, a vulcanized tire T having a heavy weight only moves in a front and rear direction while being supported by the inflator(lower rim), whereby the amount of energy consumption can be reduced easily.

Method and apparatus for manufacturing tire

A vulcanizing system including a tire transferring apparatus or a mold opening/closing station arranged equidistantly to a plurality of vulcanizing stations, thereby achieving a reduced equipment cost and a reduced installation space with a higher manufacturing efficiency.

Growing community of inventors

Kodaira, Japan

Masayuki Ichinose