Method of and apparatus for winding strip, in particular metal strip

Abstract

An apparatus ( 1 ) for winding a strip ( 3 ), in particular a metal strip of varying thickness, into a coil ( 2 ) with a device for applying a deformable material onto the strip ( 3 ) that is to be wound, characterized in that the device comprises means ( 11, 22 ) for creating a resilient, in particular an elastic material or a self-expanding or foaming material for placement onto the coil ( 2 ).

1 - 13 . (canceled) 
     
     
         14 . In combination with an apparatus for winding a strip of varying thickness into a coil,
 means for creating a resilient, self-expanding, or foamable material;   means for applying the material to the strip being wound immediately upstream in a strip-travel direction of the coil into which the apparatus is winding the strip;   a roller radially engageable with the coil being wound downstream from the means for applying; and   means for pressing the roller against the coil in order to deform the material that has been applied by compressing it.   
     
     
         15 . The combination defined in  claim 14 , wherein the means for applying has a scraper or nozzles for spraying or squirting the material onto the strip. 
     
     
         16 . The combination defined in  claim 14 , wherein the means for applying the material extends over the entire width of the coil or at least over a large part of the width of the coil covering only critical zones. 
     
     
         17 . The combination defined in  claim 14 , wherein the material is applied to the coil in strips. 
     
     
         18 . The combination defined in  claim 14 , wherein the means for applying is an extruder. 
     
     
         19 . The combination defined in  claim 14 , wherein the means for applying applies plastic to the strip as a one-piece layer or as a plurality of strips next to each other on the coil with air pockets. 
     
     
         20 . The combination defined in  claim 14 , further comprising
 sensor means for measuring the strip thickness of the strip; and   control means connected to the sensor means and to the means for applying for regulating the application of the material in accordance with a measured thickness to the strip so as to impart to the coil a substantially cylindrical outer surface.   
     
     
         21 . A rolling mill for cold rolling or warm rolling, one way or reverse rolling of a metal strip of varying thickness, in particular one that is flat or shaped, a flexibly and/or a profile-rolled metal strip, in particular of steel, with a roll stand provided with a set of rollers and an adjustment system for adjusting the roll gap, an apparatus upstream of the roll stand for unwinding the metal strip to be rolled and a winding apparatus downstream of the roll stand defined in  claim 14 , wherein a controller for controlling the rotational rate of the drives of the to two winding apparatuses has a controller for compensating or regulating the mass flow changes of the roll strip and the strip tension speed dependent on same, as well as for controlling the strip tension, in particular at those points in time at which the strip acceleration changes due to a variation in the thickness of the strip profile. 
     
     
         22 . In a method of winding a strip of varying thickness into a coil, the improvement comprising the step of:
 applying deformable material to a surface the strip immediately before winding it into the coil by nozzles or at least one scraper.   
     
     
         23 . The method defined in  claim 22 , wherein the material os applied to the metal strip at a thickness that is greater than a deviation of thickness of the metal strip and that subsequently a force is exerted by a roller onto the uppermost portion of coil in order to compress the material in such a way that at least an essentially cylindrical composite coil is created by the metal strip and the material. 
     
     
         24 . The method defined in  claim 22 , wherein the material is made to expand or foam shortly before application or during application as the result of the addition of an additive. 
     
     
         25 . The method defined in  claim 24 , wherein the material is induced to expand or foam or harden shortly before or during application by means of irradiation.