Tire forming drum including stitching supports

Details Tire forming drum including stitching supports Tire forming drum including stitching supports

1991-05-22

1993-01-26

Knable, Geoffrey L.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

156414, 156420, B29D 3026

Patent

active

051819821

ABSTRACT:
A tire forming drum includes a pair of bead lock devices, a shaping device, ply turning-up devices for turning up a ply, and a plurality of stitching supports circumferentially arranged between the pair of bead lock devices. Each of the stitching supports is composed of a rigid lever having one end pivotally connected to a housing of one of the bead lock device and the other end provided with a close contact portion to be brought into close contact with an inner circumferential surface of one bead portion of a tire being formed. An actuating device for each of the stitching supports is composed of a rigid link having one end pivotally connected to a mid portion of the stitching support and the other end pivotally connected to one of sleeves movable in axial directions of the forming drum. The stitching supports are able to expand by movements of the sleeves and the bead lock devices arranged on both sides toward each other.

REFERENCES:
patent: 3560302 (1971-02-01), Missioux
patent: 3767509 (1973-10-01), Gazuit
patent: 3833445 (1974-09-01), Mallory et al.

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