Method Of Wrapping A Rolled Roll And Wrapping Device

Abstract

The invention relates to a method of rerolling a rolled-up material web, in particular a rolled-up material web of an elastic material on a rerolling device. Furthermore, the invention relates to a rerolling device for performing the method. The inventive method of rerolling a rolled-up material web of an elastic material on a rerolling device having an-uncoiler and a recoiler, with the material web being rerolled from a large roll rolled up on the uncoiler and having a diameter D to a section roll to be rolled up on the recoiler, and with the uncoiler and/or the recoiler having an actuator, is characterized in that during rerolling, the diameter D of the large roll on the uncoiler and/or the diameter d of the section roll on the recoiler are continuously determined and the performance of an actuator is continuously adjusted by means of this determined parameter. The terms “continuously determined” and “continuously adjusted” are not only to be understood here as an actually continuous, i. e. ongoing, determining or adjusting process, but also as one that takes place in discrete time intervals, the determining taking place multiple times during the rerolling process.

1 . A method of rerolling a rolled-up material web of an elastic material on a rerolling device having an uncoiler and a recoiler, the material web being rerolled from a large roll, having a diameter (D), on the uncoiler to a section roll to be rolled up on the recoiler; the uncoiler and/or the recoiler having an actuator; the method comprising:
 during rerolling, the diameter (D) of the large roll on the uncoiler and/or a diameter (d) of the section roll on the recoiler are continuously determined and performance of an actuator is continuously adjusted by means of a determined parameter.   
     
     
         2 . The method according to  claim 1 , characterized in that the diameter (D) of the large roll rolled up on the uncoiler and/or the diameter (d) of the section roll to be rolled up on the recoiler are continuously measured by means of an optical sensor. 
     
     
         3 . The method according to  claim 1 , characterized in that the diameter (D) of the large roll rolled up on the uncoiler and/or the diameter (d) of the section roll to be rolled up on the recoiler continuously measured by means of an electromechanical sensor. 
     
     
         4 . The method according to  claim 1 , characterized in that the diameter (D) of the large roll rolled up on the uncoiler and/or the diameter (d) of the section roll to be rolled up on the recoiler are continuously measured by means of an electronic sensor. 
     
     
         5 . The method according to  claim 1 , characterized in that the diameter (D) of the large roll rolled up on the uncoiler and/or the diameter (d) of the section roll to be rolled up on the recoiler are continuously determined by calculation. 
     
     
         6 . The method according to  claim 1 , characterized in that the diameter (D) of the large roll rolled up on the uncoiler and/or the diameter (d) of the section roll to be rolled up on the recoiler are determined by means of a continuously determined roll weight. 
     
     
         7 . The method according to  claim 1 , characterized in that the diameter (D) of the large roll rolled up on the uncoiler and/or the diameter (d) of the section roll to be rolled up on the recoiler are determined by means of the continuously measured speed of the material web on the large roll or the section roll, preferably on the large roll and on the section roll. 
     
     
         8 . The method according to  claim 1 , characterized in that the diameter (D) of the large roll rolled up on the uncoiler and/or the diameter (d) of the section roll to be rolled up on the recoiler are calculated by means of the continuously measured speed of the material web and the rotational speeds of the rolls on the recoiler and on the uncoiler. 
     
     
         9 . The method according to  claim 1 , characterized in that the diameter (D) of the large roll rolled up on the uncoiler and/or the diameter (d) of the section roll to be rolled up on the recoiler are determined by means of a cumulated layer thicknesses of the material web layers on one of the rolls. 
     
     
         10 . The method according to  claim 9 , characterized in that the thickness of a layer of the material web is measured by means of an optical sensor. 
     
     
         11 . The method according to  claim 1 ,
 characterized in that all determined parameters are processed by a control unit.   
     
     
         12 . The method according to  claim 11 , characterized in that a control unit controls the actuator. 
     
     
         13 . The method according to  claim 1 , characterized in that the actuator is controlled manually. 
     
     
         14 . The method according to  claim 1 , characterized in that the rerolling device has a drum which is arranged between the uncoiler and the recoiler and is displaceable vertically, the material web being guided over the drum. 
     
     
         15 . The method according to  claim 1 , characterized in that replacement of the large roll on the uncoiler and/or of the section roll on the recoiler is performed without interruption of the rerolling process. 
     
     
         16 . The rerolling device for performing the method according to  claim 1 .