Method for forming a tire employing a belt application roller

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

Patent

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Details

1561303, 156398, 156406, 156408, B29H 1702, B29H 1726

Patent

active

044446080

ABSTRACT:
To "set" the relative angular disposition of cords in plural inextensible belts on an inflated green tire carcass before it is cured in a mold, a roller is provided which momentarily presses a belt upon the carcass, thus "printing" the belt thereon at a fixed distance from the longitudinal axis of the carcass, and thereafter releases the belt. The carcass is inflated into a toroidal shape so that a point on the circumference of the carcass is at a predetermined inflated distance from the longitudinal axis of the carcass. The roller is placed on each belt to be "set" so that the roller contacts each belt prior to printing it on the carcass. The roller biases each belt on the carcass toward its (the carcass') longitudinal axis, and it is essential that the distance between the bottom surface of the roller and the longitudinal axis of the inflated carcass is maintained constant while each belt is in contact with the roller. The air cushion within the inflated carcass provides resistance against which the roller is biased. The tire is mounted only on bead flanges and there is no rigid support against which the roller acts. The tread is manually pressed on to the belts which have been printed on to the carcass with the roller, and spliced to encircle the belted carcass; thereafter, the tread, belts and sidewalls are together "stitched" to the carcass by conventional stitching rollers. Printing the belts with the roller, so that cords of one belt are at a predetermined oblique angle with respect to cords of another belt, sets this angle in the green tire in such a way that, upon curing of the green tire in a mold, a desired cured angle of the cords is obtained in a tire of excellent uniformity.

REFERENCES:
patent: 2422652 (1947-06-01), Bacon
patent: 3441074 (1969-04-01), Pouilloux et al.
patent: 3867223 (1975-02-01), Appleby
patent: 3874974 (1975-04-01), Simmons, Jr.
patent: 3989563 (1976-11-01), Schelkmann
patent: 4052245 (1977-10-01), Kuts
patent: 4366019 (1982-12-01), Jones

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