Patent ID: 7637133
Filing Date: 2009-12-29
Classification: B21D

Abstract:
1. A roller leveler, comprising: a frame; a first bank of upper and lower work rolls journalled in said frame via a work roll journal housing; a bank of back-up rolls in contact with said work rolls to support said work rolls; said work rolls perform leveling on a work product passing through a gap formed between upper and lower work rolls; said bank of back-up rolls mounted to said roller leveler frame via a back-up housing; wherein said first bank of upper and lower work rolls are removed and a second bank of upper and lower work rolls are installed wherein said second bank of upper and lower work rolls have a different diameter than said first bank of upper and lower work rolls; a positioning member for locking said back-up housing into position for allowing installation of said first bank or said second bank of upper and lower work rolls; wherein said positioning member comprises a set of teeth on said back-up housing which nest with teeth on said frame when said first bank of upper and lower work rolls are installed; wherein said back-up housing is lowered via hydraulic cylinders mounted to opposite sides of said back-up housing until said teeth of said back-up housing clear said teeth of said leveler frame wherein said teeth of said frame are directly above said teeth of said back-up housing.