Green tire evolution for high speed uniformity
OwnerJulien Flament, James Traylorinventors
Life of this patent
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Abstract
A method for controlling uniformity in tire manufacturing includes the steps of building at least one tire according to a series of process steps, determining summit mass imbalance of a tire, modeling green carcass radial runout as a sum of vectors representing contributions arising from the tire building steps, determining carcass force variation, determining a vectorial equation for the prediction of high speed uniformity based on at least the green tire radial runout and the summit mass imbalance of the tire, modifying the process to rotate the summit in relation to the carcass in order to optimize high speed uniformity per the said vectorial equation, and building at least one additional tire according to the modified series of process steps.
Claims13
A method for controlling the uniformity of tires in tire manufacture, comprising the steps of:
- building at least one tire according to a series of process steps;
- determining summit mass imbalance of a tire;
- modeling green carcass radial runout as a sum of vectors representing contributions arising from the tire building steps;
- determining carcass force variation;
- determining a vectorial equation for the prediction of high speed uniformity based on at least the green tire radial runout and the summit mass imbalance of the tire;
- modifying the process to rotate the summit in relation to the carcass in order to optimize high speed uniformity per the said vectorial equation;
- and
- building at least one additional tire according to the modified series of process steps.
A method for controlling the uniformity of tires in tire manufacture, comprising the steps of:
- building at least one tire according to a series of process steps;
- determining summit mass imbalance of a tire;
- modeling the green tire radial runout of a tire in the manufacturing process as a vector sum of each of the vectors representing contributions arising from the tire building steps;
- determining a vectorial equation for the prediction of high speed uniformity based on at least the green tire radial runout and the summit mass imbalance of the tire;
- modifying the process to rotate the summit in relation to the carcass in order to optimize high speed uniformity per the said vectorial equation;
- and
- modeling the effect of a curing process on the non-unformity of the tire and then processing the optimal angle for the green tire in the curing press to minimize the non-uniformity of the cured tire.
Dependencies are inferred from the claim text.