Device for measuring the roll gap between the work rolls of...

B - Operations – Transporting – 21 – B

Patent

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B21B 38/10 (2006.01) B21B 29/00 (2006.01)

Patent

CA 2469077

A device for measuring the roll gap (7) between the working rollers (1 a; 1 b) of a cold or warm rolling stand for rolling out narrow or wide strips of metal, especially NE metal strips, by means of roll gap sensors (6) whose signals are transmitted to the servo-valves of the compressed oil control as a roll gap setpoint value for the piston cylinder units influencing said roll gap (7), and used to provide a roller gap measurement which is also suitable for such cases involving the lateral progression of said strip. In order to achieve said aim, the position or travel sensor (6) is provided in at least one bending cylinder (5a;5b) for the working cylinders (1 a, 1 b) for indirect reference measurement of the roll gap via the positively or negatively acting bending cylinders (5a; 5b).

L'invention concerne un dispositif de mesure de l'emprise (7) entre les cylindres de travail (1a ; 1b) d'une structure de laminage à froid ou à chaud conçue pour le laminage de bandes métalliques étroites ou larges, en particulier de bandes métalliques non ferreuses, au moyen de capteurs d'emprise (6) dont les signaux peuvent être transmis en tant que valeurs théoriques d'emprise aux servosoupapes de l'appareil de commande à huile sous pression pour les unités cylindre-piston influant sur l'emprise (7). L'objectif de l'invention est de pouvoir mesurer l'emprise même lorsque la bande évolue latéralement. A cet effet, le capteur de position ou de parcours (6) est disposé dans au moins un cylindre de flexion (5a ; 5b) pour les cylindres de travail (1a, 1b) pour effectuer une mesure référentielle indirecte de l'emprise par l'intermédiaire des cylindres de flexion (5a ; 5b) exerçant une action positive ou négative.

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