Mandrelless downcoiler for coil box
AssigneeThe Steel Company of Canada, Limited
InventorWilliam Smith
Life of this patent
Estimating the term…
Abstract
This invention provides a method and apparatus for use with the rolling of hot metal strip. The first step in the rolling of hot metal strip is to roll a transfer bar of about one inch thickness, and this is ordinarily then passed through a series of finishing mills which reduce the thickness of the transfer bar to the desired final stage. The method and apparatus of this invention provides for the coiling up of a transfer bar after it has been rolled but before it passes to the finishing mill, the transfer of the coiled transfer bar from the coiling location to an adjacent uncoiling location where uncoiling can be completed or completely carried out, and initiating the coiling of a further transfer bar while the first transfer bar is still uncoiling.
Claims16
In combination:
- coiling means for a transfer bar, including bend rollers adapted to curl the transfer bar and first cradle rolls on which the transfer bar can be supported as it coils itself into a coil with an open center core,
- second cradle rolls adjacent the first cradle rolls, the second rolls being adapted to receive a coil for uncoiling,
- and transfer means for transferring a coil from said first cradle rolls to said second cradle rolls, said transfer means including a pair of spaced-apart transfer arms coaxially pivoted at a position between the first cradle rolls and the second cradle rolls, each transfer arm having a stub mandrel and being movable toward and away from the other transfer arm, the stub mandrels being adapted to enter the open center core of a coil from opposite sides, and means for pivoting the transfer arms in tandem to swing the coil from said first cradle rolls to said second cradle rolls.
In combination:
- coiling means for a transfer bar, including bend rollers adapted to curl the transfer bar and cradle rolls on which the transfer bar can be supported as it coils itself into a coil with an open center core,
- a flattening roll,
- and means for inserting the flattening roll between the last-to-be-coiled end of a coiled transfer bar and the next inward convolution thereof, thereby to urge said last-to-be-coiled end to flatten out at the initiation of uncoiling, said means for inserting the flattening roll including an arm articulable between an extended position and a withdrawn position, the arm carrying, in addition to the flattening roll, knife-edge means extending in one direction from the flattening roll and a freely rotating tracer roll extending in the opposite direction from the flattening roll, all arranged such that when a flattening roll and a tracer roll are both in contact with the outside convolution of a coiled transfer bar, the knife-edge means is cantilevered so as to be adjacent but spaced slightly from the coil, and pointing in the direction opposite the uncoiling direction.
Dependencies are inferred from the claim text.