IMPROVEMENTS IN TIRE BUILDING MACHINE

摘要

A tire building machine including a drum having a set of radially movable segments at each end thereof and being covered with a cord reinforced rubber sleeve, a set of radially movable fingers are disposed adjacent the axially outer ends of the drum and an auxiliary drum including a turn-up bladder is disposed axially outwardly of each set of fingers. The drum is axially contractible and radially expansible A pair of coaxially arranged pistons each having a conical surface is associated with each set of fingers and segments on each end of the drum for moving the fingers into gripping relation with and a tire bead with a predetermined force and for moving the segments to a predetermined diameter.