Multiple disc stitcher

摘要

A stitcher for a tire building machine having multiple discs disposed in concentric laminated relationship for relative movement in the radial and circumferential directions. The discs have a central opening in which a central supporting member is rotatably supported on a stitcher shaft. A plurality of circumferentially spaced cylindrical cushioning members are positioned between the central supporting member and the discs for resiliently accommodating relative radial movement of the discs when stitching tire surfaces of different radii. The central supporting member may have radially extending curved arms to separate and support the cylindrical cushioning members. The outer shell of the cushioning members may be of wear-resistant material in sliding engagement with the discs so that during relative rotational movement of said discs there will be a minimum amount of wear of the cushioning members and discs.