METHOD AND DEVICE FOR MANUFACTURING BEAD APEX RING

摘要

PURPOSE: To reduce a manufacturing cost by providing a step of forming an apexed plate radially adjacent to an apex from a bead at the step in the step of spirally winding a bead ribbon on a forming wheel to form the bead. CONSTITUTION: An uncured rubber is disposed around a bead wire 44 in a rubber treating unit 46 for supplying a bead wire 44 from a supply unit 42 to form a bead ribbon 48. The ribbon 48 is formed as a ring-like bead apexed ring 22 by spirally winding several times around a forming wheel 180. The ribbon 48 is formed with a bead part 162 as a load bearing part at the time of pulling via a molding head 122 and an apexed plate 164 axially extended at the wire 44 from the part 162. The wheel 180 has an oblique surface 184, where the plate 164 is pressed.