Tire building drum

Details Tire building drum Tire building drum

1994-03-22

1995-04-11

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

156415, 156401, 156403, B29D 3024

Patent

active

054054842

ABSTRACT:
A tire building drum has a pair of drum sections axially movable along a center shaft which form an internal tire inflation chamber for inflating the carcass of a green tire when mounted between the drum sections. Each of the drum sections has a plurality of bead lock segments controlled by a plurality of straight links moved by an annular piston. The piston is mounted in an annular cylinder surrounded by an annular manifold ring, an annular sealing ring and an annular bladder ring. The annular manifold provides for the distribution of pressurized air to various components of the drum and functions as an air seal for the tire inflation chamber. A plurality of air passages are formed in the manifold ring and connect to a source of pressurized air for supplying the control air from a remote source to an inflation turn-up bladder mounted on each of the drum sections and to a control assembly mounted within each of the drum sections for actuating the bead lock segments. A plurality of flexible air lines extend through the tire inflation chamber exteriorly of the center shaft, between the spaced manifold rings. Preferably, thirty-six bead lock segments are provided at each drum assembly to provide an increased holding force for clamping carcass plies-against a pair of bead ring assemblies during inflation of the green tire. The bead lock segments also provide space for the passage of the air lines extending between the two drum sections.

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patent: 5223074 (1993-06-01), Miyanaga
patent: 5232542 (1993-08-01), Norjiri
patent: 5273599 (1993-12-01), Adachi

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