Ply-turning device for use in tire-building

Details Ply-turning device for use in tire-building Ply-turning device for use in tire-building

1983-12-09

1984-11-27

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

156132, 156410, 156413, B29H 1722

Patent

active

044849737

ABSTRACT:
A ply-turning device for use in tire-building is disclosed herein which is adapted to turnup a surplus portion of a carcass ply around a bead core in the manufacture of large size tires each having a pair of axially protruding side portions. The device comprises a plurality of ply-turning vanes being arranged concentrically to a first drum for the formation of a green case and circumferentially in the form of a cylinder at a collapsed position and being movable from the collapsed position to an opened position of a frustoconical shape in opposition to each axially protruding side edge portion of the drum by means of link means, a hydraulically driving means moving toward and away from the drum, and a retractably moving means for moving all the ply-turning vanes together with the link means.

REFERENCES:
patent: 3232817 (1966-02-01), Nadler et al.
patent: 3374138 (1968-03-01), Porter et al.
patent: 3438832 (1969-04-01), Cantarutti
patent: 3560301 (1971-02-01), Cantarutti
patent: 3676261 (1972-07-01), Appleby et al.
patent: 3772125 (1973-11-01), Leblond

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