Back to results
US 4,057,185 AGranted
Method and means for operating a pair of pinch rolls
AssigneeArmco Steel Corporation
InventorsJerry L. Slama, David J. Francis, Gordon R. Shepherd
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeArmco Steel Corporation
InventorsJerry L. Slama, David J. Francis, Gordon R. Shepherd
Estimating the term…
A method and apparatus for operating a pair of vertically disposed pinch rolls to facilitate the withdrawal of a strip of material from a rotatable mandrel is disclosed. The lower roll is operated conventionally at a preselected rotational velocity tending to advance the bottom surface of the strip through the rolls at a corresponding speed. The top roll is operated hydrostatically in response to strip speed and torque output feedback signals so as to maintain a constant output torque at a rotational velocity tending to advance the top surface of the strip at the monitored value of strip speed. As a result, the strip is advanced through the pinch rolls at a speed corresponding to the preselected rotational velocity of the bottom roll.
In an assembly of the type utilizing first and second pinch rolls on a processing line for engaging therebetween a strip of material to facilitate the withdrawal of said strip from a supply thereof and to advance said strip along said line, the improved apparatus for operating said pinch rolls comprising:
In an operation of the type utilizing first and second pinch rolls on a processing line for engaging therebetween a strip of material to facilitate the withdrawal of said strip from a supply thereof and to advance said strip along said line, the improved method of operating said pinch rolls comprising:
Dependencies are inferred from the claim text.