Ironing roll with cam for following coil/strip tangent point
AssigneeKvaerner Metals
InventorsAndrew Frampton, William C. Kramer
Life of this patent
Estimating the term…
Abstract
An apparatus and method for pressing a rotatable ironing roll against an outermost wrap of strip material being coiled with substantially constant force and at a minimum constant distance from the tangent point of entry of the strip onto the coil, comprising an ironing roll support linearly and pivotally movable with respect to the coil, a sensor to determine a position of the ironing roll and to determine a corresponding desired roll pressure, and a cam connected to the ironing roll support and adapted to cause the ironing roll to follow a curved locus of the tangent point as the coil diameter increases.
Claims11
An ironing roll assembly, comprising an elongated pivoted frame, a guide tube slidably mounted on the frame and having one end thereof connected to an ironing roll support, an ironing roll rotatably mounted on the roll support, means, as a coil of material increases in diameter with continued coiling, to maintain a constant pressure of the ironing roll against coiled strip material and a constant distance between a point of contact of the ironing roll with the coil and a tangent point of the coil and entering strip material being coiled and to prevent weaving of the entering strip material.
An apparatus for ironing a material during coiling thereof, comprising a rotatable ironing roll, ironing roll support means linearly movable toward and away from a coil of the material during coiling and pivotable with respect to the direction of such linear movement of the ironing roll, means to control the pressure of the roll against the coil at a constant value as the coil diameter changes, linear movement means and pivoting movement means to change the position of the ironing roll as the coil diameter changes, and cam means connected to the ironing roll support means and moving in a cam track to cause the ironing roll adjacently to follow a locus of travel of the tangent point of entry of the material onto the coil as the coil diameter changes.
A method of reducing air entrainment in the coiling of thin strip material comprising exerting a substantially constant pressure on an outer wrap of the coiled material by means of a linearly and pivotally movable rotatable ironing roll disposed against an outermost coil wrap at a substantially constant minimum distance from the tangent point where the strip is laid on the coil, such means maintaining the constant minimum distance by moving a cam attached to an ironing roll support means, in a cam track shaped to cause the ironing roll to follow a curved locus of travel of the tangent point in response to increasing diameter of the coil.
Dependencies are inferred from the claim text.