Patent ID: 8132440
Filing Date: 2012-03-13
Classification: B21B

Abstract:
1. A roll bending device configured to bend at least one roll of a pair of cooperating rolls in a strip forming apparatus so as to control profile and flatness in rolling of a metal strip or plate, wherein the strip forming apparatus comprises the pair of cooperating rolls oriented to define profile and flatness of the metal strip or plate as the metal strip or plate passes between the pair of rolls, and wherein each roll is pivoted in respective roll chocks, each roll chock including a vertical face between the role and a bending block, and the roll chocks are positioned in a mill stand housing, the roll bending device comprising: the bending block extending between the roll chocks of the pair of cooperating rolls; a piston positioned in the bending block and having a minimum extension stroke and a maximum extension stroke, the piston configured to adjust spacing between the roll chocks by movement of the piston, so as to control the profile and flatness of the metal strip or plate; an extension piece including a top part, a first side wall positioned between the bending block and the vertical face of the roll chock, and a second side wall positioned between the bending block and the mill stand housing, the extension piece connected to the bending block, the extension piece positioned to be guided and moved between the vertical face of the roll chocks and the mill stand housing, and the extension piece being configured to be moved with respect to the roll chock; the extension piece being configured and operable to transfer side loads from the roll chock to the mill stand housing, and the first side wall and the second side wall of the extension piece encompassing at least part of the bending block even at the maximum extension stroke of the piston.