Patent ID: 7481258
Filing Date: 2009-01-27
Classification: B60C

Abstract:
1. Improved device for tire disassembling machines ( 1 ) designed to simplify tire assembling without excessive stretching, which comprises: a base ( 2 ), a self-centering unit ( 4 ) rotatably mounted on the base ( 2 ) around a rotation axis ( 14 ), to stop and drive into rotation, a wheel (R) comprising a tire (P) mounted on a corresponding rim (C), an articulated arm ( 12 ) composed of a first section ( 12 a ) articulated according to a first vertical axis ( 11 ) and a support side ( 10 ) with adjustable height with respect to the base ( 2 ) of the tire disassembling machine ( 1 ), and a second section ( 12 b ) with a sliding heel-pressing tool (A) articulated with the first section ( 12 a ) by means of a joint (S) with a second vertical axis ( 13 ) placed at a distance from the said first vertical axis ( 11 ) equal to the distance between the said first vertical axis ( 11 ) and the rotation axis ( 14 ) of a self-centering unit ( 4 ), wherein said second section ( 12 ) of the arm rotates around said second vertical axis ( 13 ) so that the heel-pressing tool (A) rotates together with the tire (P), further having cam and valve train means (M) designed to determine the gradual automatic lifting of the said heel-pressing tool (A) in a predefined point of its rotation together with the tire (P), during the assembling operation of the tire on the corresponding rim (C).