Winder

Abstract

Carrier roll winder for winding a material web divided by longitudinal cuts, e.g., a paper or board web, which has two carrier rolls arranged to form a roll bed on which the wound rolls rest with axes aligned as they are wound up. A pressure roll system is included, which has a crossmember running horizontally and displaceable vertically, to which a pressure roll having an axis parallel to the crossmember is fixed. The crossmember, including the pressure roll carried by it and other units carried by it, has a mass M of 9.25·I 2.5 , where M is the mass in kilograms and I is the length in meters. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

1 . A carrier roll winder for winding a material web divided by longitudinal cuts, in particular a paper or board web, which has two carrier rolls, between which there is formed a roll bed on which the wound rolls rest with axes aligned as they are wound up, and having a pressure roll system which has a crossmember running horizontally and displaceable vertically, to which a pressure roll having an axis parallel to the crossmember is fixed, wherein the crossmember, including the pressure roll carried by it and other units carried by it, has a mass M of 9.25·I 2.5 , where M is the mass in kilograms and I is the length in meters.  
     
     
         2 . The carrier roll winder for winding a material web divided by longitudinal cuts, in particular a paper or board web, which has two carrier rolls, between which there is formed a roll bed on which the wound rolls rest with axes aligned as they are wound up, and having a pressure roll system which has a crossmember running horizontally and displaceable vertically, to which a pressure roll having an axis parallel to the crossmember is fixed, in particular as claimed in  claim 1 , wherein the maximum permissible deflection of the crossmember is 60·10 −3  mm/m.  
     
     
         3 . The carrier roll winder for winding a material web divided by longitudinal cuts, in particular a paper or board web, which has two carrier rolls, between which there is formed a roll bed on which the wound rolls rest with axes aligned as they are wound up, and having a pressure roll system which has a crossmember running horizontally and displaceable vertically, to which a pressure roll having an axis parallel to the crossmember is fixed, in particular as claimed in  claim 1 , wherein the crossmember, including the units fixed to it, has a weight of less than 600 kg/m, in particular less than 550 kg/m, based on its length.  
     
     
         4 . The carrier roll winder for winding a material web divided by longitudinal cuts, in particular a paper or board web, which has two carrier rolls, between which there is formed a roll bed on which the wound rolls rest with axes aligned as they are wound up, and having a pressure roll system which has a crossmember running horizontally and displaceable vertically, to which a pressure roll having an axis parallel to the crossmember is fixed, in particular as claimed in  claim 1 , wherein the crossmember has the shape of a double T beam.  
     
     
         5 . The carrier roll winder as claimed in  claim 4 , wherein the double T beam has a web element introduced between two flange elements which additionally has a wavy structure transversely with respect to the machine direction.  
     
     
         6 . The carrier roll winder as claimed in  claim 5 , wherein the wavelength has a value which lies between one times the flange width and five times the flange width.  
     
     
         7 . The carrier roll winder as claimed in  claim 1 , wherein the ratio between the height and the width of the crossmember lies in a range between 0.8 and 3 times the width.  
     
     
         8 . The carrier roll winder as claimed in  claim 1 , wherein at least one of the flange elements and/or the web element has a honeycomb structure.  
     
     
         9 . The carrier roll winder as claimed in  claim 8 , wherein the honeycomb structure is formed by a layer of aluminum, steel or a fiber-reinforced plastic.  
     
     
         10 . The carrier roll winder as claimed in  claim 1 , wherein the crossmember consists wholly or partly of steel, of aluminum or of a highly loadbearing plastic reinforced by a glass or carbon fiber composite.