TIRE CARCASS PLY JOINING APPARATUS AND JOINING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for forming a butt joint between ends of first and second plies and splicing them together.SOLUTION: The method includes the steps of: positioning first and second splice edges of first and second plies respectively at first and second locations; wrapping a first gum strip around the first splice edge so as to form a U-shaped structure in section that allows extension from a first planar side of the first ply over the first splice edge to a second opposite planar side; wrapping a second gum strip around the second splice edge so as to form a U-shaped structure in section that allows extension from a first planar side of the second ply over the second splice edge to a second opposite planar side; placing the first splice edge in abutting relationship to the second splice edge; and stitching the first splice edge to the second splice edge such that stitches each extend from the first planar side of the first ply to the first planar side of the second ply.