Cylindrical member transfer apparatus and tire building machine having the same

摘要

A transfer apparatus for cylindrical members, including a trolley (7) movable toward and away from a forming drum, a pair of movable members (16, 17) movably supported on the trolley, bead holding means (57, 58) mounted on inner ends of the movable members for holding beads (B), grasping means (41, 49) mounted on outer ends of the movable members for grasping axial ends of a cylindrical member (G) on its outside, respectively, and toward and away driving means (63, 66, 67, 68) for moving the movable members equal distances toward and away from each other. With this arrangement, if sizes of tires to be produced are changed, bead set positions and grasping positions of the cylindrical member can be easily changed with high efficiency. Even if a cylindrical member has a low rigidity, it can be grasped and transferred with little deformation of the cylindrical member. A tire building machine including such a transfer apparatus can improve the working efficiency and further achieve energy saving and improvement of formed accuracy.