Device for manufacturing an automotive tire bead
AssigneeBridgestone/Firestone, Inc.
InventorCarlo Giorgetti
Life of this patent
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Abstract
A device (1) for manufacturing a tire bead (2) consisting of an annular element (3) formed from a metal wire (4) wound in such a manner as to form a number of coils packed by a flexible packing member (6) wound about the annular element (3) and having its opposite ends (7) tied in a knot (8). An annular mandrel (9) on the device (1) defines a first annular duct (38) for forming the annular element (3), and a second duct (39) coiled about the first duct (38). The mandrel (9) is connected to a pneumatic knotting machine (10) having an input duct (62) and an output duct (63) defining the two halves of a flat knot (64) and communicating respectively with the inlet (46) and outlet (47) of the second duct (39).
Claims20
A device for manufacturing an automotive tire bead of the type having an annular element consisting of a number of coils formed from a bare metal wire, and an outer flexible packing member having a pair of opposite ends coiled about said annular element, said opposite ends being tied in a knot;
- said device including an annular mandrel defining a first annular duct for forming said annular element, and a second duct having an inlet hole and an outlet hole extending concentrically about said first duct;
- and a pneumatic knotting machine connected to said mandrel having an input duct and an output duct interlaced so as to define two portions of the knot, with said input and output ducts communicating respectively with said inlet hole and said outlet hole of said second duct.
Dependencies are inferred from the claim text.