| 摘要 |
<p>PURPOSE:To obtain a bead having excellent precision and retain shrinking force at a contacting part of an apex and a bead core so as to maintain certain connection by seating and connecting a contacting face of the apex having an enlarged diameter to the outer periphery of the bead core mechanically by contracting the diameter of the apex. CONSTITUTION:An apex winding device 2 is mounted on a common base 1 slidably, while a bead holder device 3 is fixed. After a drum is moved to the bead holder by a motor 11, a segment 31 is rocked by a cylinder 37 through a ring 34 so as to enlarge and slant a diameter of an apex B2. During this time, a diameter of a contacting face B2a of the apex B2 with a bead core B1 is once enlarged and contracted thereafter, and the contacting face is connected to the outer periphery of the bead core B1. On the other hand, a vacuum cup 54 is moved by a cylinder 53 so as to be sucked by the outer periphery of the apex B2. Thereafter, the cylinder 37 and the motor 11 are operated reversely so as to contract the diameter of the segment 31 and to return the drum.</p> |
