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US 6,039,826 AGranted
Method of forming green tire with strip winding
AssigneeThe Yokohama Rubber Co., Ltd.
InventorNoboru Okada
Life of this patent
Estimating the term…
Abstract
A method of forming a green tire according to the present invention comprises winding a rubber strip on an adjusting drum while extruding an unvulcanized rubber from an extruder in a form of the rubber strip in a length corresponding to the rubber quantity of a tire constituent portion, and forming the tire constituent portion by winding said rubber strip continuously a plurality of times on the outer circumference of a rotary support member, unwinding it from the adjusting drum.
Claims9
A method of forming a green tire comprising the steps of:
- directly winding a rubber strip formed by simultaneously extruding unvulcanized rubber in a shape of the rubber strip from an extruder onto an adjusting drum in a length corresponding to the rubber quantity of a tire constituent portion, said adjusting drum comprising a straight cylinder having a same diameter in an axial direction thereof, and said rubber strip being spirally wound in a single layer at a predetermined pitch on an outer circumference of said adjusting drum in such a manner as to have adjacent portions of said rubber strip spaced apart from one another so that there is no strip overlap;
- and
- forming said tire constituent portion by winding said rubber strip a plurality of times on an outer peripheral side of a rotary support member while unwinding said rubber strip from said adjusting drum.
Dependencies are inferred from the claim text.