Roll support hub braking mechanism

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 23/06 (2006.01)

Patent

CA 2211233

An improved braking system for a rotatable roll support hub for a roll product of web material is described that is capable of providing a smoother and progressive braking action which uses a less powerful compression spring. This can be achieved by utilizing a friction element that has frustoconical shaped friction surfaces. Specifically, the friction element comprises a frustoconical disc that floats between a similar frustoconical surface that rotates with the roll support hub and an opposite similar frustoconical surface on the pressure disc. Preferably, a rim flange is provided as part of the pressure disc that forces the friction element into wedged engagement on the frustoconical friction surface of the roll support hub. The advantages are achieved for providing a smoother progressive braking action which is applicable to any roll support hub on which a controlled braking force is desirable. Such may include manual tape dispensers or any other roll support hub for any roll of web material which is associated with an automatic, semi- automatic, or manual dispensing or applying apparatus.

L'invention concerne un système de freinage amélioré pour un moyeu portant un rouleau d'un matériau sous forme bande, qui permet d'assurer un freinage plus progressif et plus en douceur du rouleau en rotation, et qui fait appel à un ressort de compression moins puissant. Ceci peut être réalisé au moyen d'un élément de friction présentant des surfaces de friction tronconiques. Plus précisément, l'élément de friction comporte un disque tronconique qui flotte entre une surface tronconique similaire qui tourne avec le moyeu portant le rouleau et une surface tronconique opposée similaire sur le disque de pression. De préférence, une bride de bordure, prévue en tant que partie du disque de pression, force l'élément de friction à entrer en un contact de calage avec la surface de friction tronconique du moyeu portant le rouleau. Ce système est avantageux dans la mesure où il permet un freinage plus progressif et plus en douceur qui peut être appliqué à n'importe quel moyeu de support auquel on souhaite appliquer une force de freinage contrôlée. L'invention peut s'utiliser sur les distributeurs de bande manuels ou sur tout autre moyeu de support de rouleau d'un matériau en bande associé à un appareil distributeur ou applicateur automatique, semi-automatique ou manuel.

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