Metal strip stretching mill
AssigneeFa. Erwin Kampf GmbH & Co.
InventorsArmin S. P. Hutzenlaub, Willi Schmidt
Life of this patent
Estimating the term…
Abstract
A metal strip stretching mill comprising a stretching station and, oppositely adjacent thereto, a group of pulling rolls and a group of braking rolls with adjustably speed-controlled drives on the rolls in the immediate vicinity of the stretching station and torque-controlled drives of stepped-up or stepped-down power on all other rolls, and a disconnectable clutch at the roll trunnion of at least one torque-controlled roll in the middle of each roll group, for a downward expansion of the usable power range of the installation through selective disconnection and idling of said rolls.
Claims5
A metal strip stretching mill comprising in combination:
- a central stretching station;
- a group of at least two pulling rolls adjoining the stretching station on one side, including a proximate pulling roll which is located in the immediate vicinity of the stretching station;
- a similar group of at least two braking rolls adjoining the stretching station on the opposite side and including a proximate braking roll which is located in the immediate vicinity of the stretching station;
- drive shafts connecting said two proximate rolls to a speed-adjustable drive means imparting to said proximate rolls an adjustable circumferential speed;
- drive shafts connecting the non-proximate rolls of both groups of rolls to torque-adjustable drive means imparting to each of said non-proximate rolls an ajustable drive torque, or braking torque, respectively, the power input to the non-proximate rolls in each group being stepped down as a function of the distance of the particular roll from the stretching station;
- and
- a disconnectable clutch on the drive shafts of at least one non-proximate pulling roll and at least one non-proximate braking roll, said clutches being operable to switch said pulling and braking rolls to an idling mode, for a downward expansion of the effective power range of the metal strip stretching mill, through the selective idling of non-proximate rolls in both groups of rolls.
Dependencies are inferred from the claim text.