Method and apparatus for balancing tires during retreading

Details Method and apparatus for balancing tires during retreading Method and apparatus for balancing tires during retreading

B - Operations, Transporting

29

D

B29D 30/54 (2006.01) G01M 17/02 (2006.01)

Patent

CA 2509145

A method and apparatus for balancing a tire during a retreading operation includes measuring the radial runout the buffed tire casing and applying the gum layer and tread strip to compensate for variances in runout. The gum layer is applied so that an overlap or smear is formed at the relative low portion of the casing. The tread strip is applied with the joint at the same low portion in cases where the low portion has a relatively large variance, or at another location if the variance is small or other low portions exist. In addition, the thickness of the gum layer and tread strip may be controlled for further compensation of the runout variance.

Cette invention concerne un procédé et un appareil permettant d'équilibrer un pneu pendant une opération de rechapage, lequel procédé consiste à mesurer le faux-rond de la carcasse de pneu brossée et à appliquer la couche de gomme ainsi qu'une bande de rechapage afin que les variations de faux-rond soient compensées. La couche de gomme est appliquée de manière qu'une superposition ou qu'une bavure soit formée au niveau de la partie basse relative de la carcasse. La bande de rechapage est appliquée de manière que le raccord se trouve au niveau de cette même partie basse lorsque cette partie basse présente une variation relativement importante, ou à un autre endroit si la variation est faible ou s'il existe d'autres parties basses. Il est en outre possible de modifier l'épaisseur de la couche de gomme et de la bande de rechapage afin que la variation du faux-rond soit davantage compensée.

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