Rolling stand with back up and working rolls

B - Operations – Transporting – 21 – B

Patent

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Details

B21B 37/68 (2006.01) B21B 13/02 (2006.01)

Patent

CA 2350534

The invention relates to a method and a device for rolling sheets and strips onto a rolling stand. The upper and lower working rolls, optionally in pairs with their designated back up rolls, can be pivoted about a common vertical axis intersecting the longitudinal centres of the rolls, out of their common vertical plane and into positions in which the vertical planes that run through the roll axes of the working rolls or optionally, the working rolls and the back up rolls, cross at a predetermined angle, by horizontally displacing the inserts supporting each roll inside the stand windows. Defects in the course of the sheet or strip being rolled can be corrected by pivoting the upper and lower working rolls, optionally in pairs with their designated back up rolls, about different angles respectively, according to the size of the detected deviation of the strip from the set rolling direction, in relation to the common starting planes intersecting the roll axes.

L'invention concerne un procédé et un dispositif de laminage de tôles et de bandes dans une cage de laminoir. Pour amener les cylindres de travail supérieurs et inférieurs, éventuellement associés par paires à leurs cylindres d'appui respectifs, dans des positions à partir du plan vertical commun, on les fait tourner autour d'un axe vertical commun, lequel axe coupe les centres longitudinaux des cylindres, et ce par déplacement horizontal opposé des empoises supportant chaque cylindre dans la fenêtre des montants. Dans ces positions, les plans verticaux passant par les axes des cylindres de travail, éventuellement des cylindres de travail et d'appui, se croisent dans un angle prédéterminé. Pour compenser les parcours erronés de la tôle ou de la bande laminée, les cylindres de travail supérieurs et inférieurs, éventuellement associés par paires à leurs cylindres d'appui, tournent respectivement de différents angles par rapport au plan initial commun coupant les axes de cylindres en fonction de l'importance de la déviation de la direction de la bande détectée par rapport à la direction de laminage prévue.-

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