Patent ID: 8083876
Filing Date: 2011-12-27
Classification: B29D,G05B

Abstract:
1. A method of applying a tread to a carcass of a tire, the method comprising: mounting the carcass onto a rotary drum; applying a first end of the tread to the carcass; feeding the tread to the carcass via a feed conveyor, while at the same time rotating the rotary drum; applying a pressure force on the tread by contacting the tread with a pressure roller spaced from the rotary drum and arranged between the rotary drum and the feed conveyor and at a given distance upstream from the rotary drum so that the pressure roller presses the tread upstream from the rotary drum; calculating an error variable as a difference between a length of a remaining portion of a circumference of the carcass and a length of a remaining portion of the tread; automatically adding a first constant quantity to the error variable to obtain a given overlap of two ends of the tread; and regulating an intensity of the force applied by the pressure roller as a function of the error variable with a proportional control block having a variable gain and by varying the gain of the proportional control block as a function of a value of the error variable, wherein: