| 摘要 |
An apparatus for building tire comprises an outer shaft 3, an intermediate shaft 2, and a center shaft 1 which are disposed coaxially with each other, a building drum 14 supported on the outer shaft 3 and having a uniform outer diameter over the entire length, and means for rotating these shafts disposed on one side of the building drum 14. The building drum 14 consists of axially divided two drum portions 15, 16 which are displaced in mutually approaching and separating directions and are radially expanded and contracted. The intermediate shaft 2 is reciprocably connected to one drum portion 15. The one drum portion 15 is drivably connected to the other drum portion 16 to be able to reciprocably move in mutually opposite directions. Cam members 28, 29 bringing the drum portions into radial expansive/contractive transformations are reciprocably connected to the center shaft 1. The apparatus further comprises a first motor constantly drivably connected to the intermediate shaft 2 and to the center shaft 1 and selectively drivably connected to the outer shaft 3, and a second the second motor constantly drivably connected to the center shaft 1.
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