Rotary cutting device

Abstract

A rotary cutting device is provided, comprising a machine frame, a cutting roll rotatably mounted on the machine frame, and a counter roll mounted on the machine frame, wherein the cutting roll and/or the counter roll comprise an inner core and an outer sleeve disposed around the inner core, the outer sleeve is spaced apart from the inner core, and on the inner core at least one counter bearing is disposed, on which the outer sleeve is supported.

1 . Rotary cutting device, comprising:
 a machine frame;   a cutting roll rotatably mounted on the machine frame; and   a counter roll mounted on the machine frame;   wherein at least one of the cutting roll and the counter roll comprise an inner core and an outer sleeve disposed around the inner core;   wherein the outer sleeve is spaced apart from the inner core; and   wherein on the inner core there is disposed at least one counter bearing, on which the outer sleeve is supported.   
     
     
         2 . Rotary cutting device according to  claim 1 , wherein the at least one counter bearing is disposed and configured in a way that allows forces, which the cutting roll and counter roll exert on one another, to be guided away in a defined manner by means of the at least one counter bearing on at least one of the counter roll and cutting roll. 
     
     
         3 . Rotary cutting device according to  claim 1 , wherein the at least one counter bearing is disposed and configured in such a way that the outer sleeve is movable by elastic deformation relative to the inner core. 
     
     
         4 . Rotary cutting device according to  claim 1 , wherein the at least one counter bearing is disposed and configured in such a way that during the cutting operation a bowing of the outer sleeve is smaller than a bowing of the inner core. 
     
     
         5 . Rotary cutting device according to o  claim 1 , wherein outside of the at least one counter bearing between the outer sleeve and the inner core an intermediate space is formed. 
     
     
         6 . Rotary cutting device according to  claim 1 , wherein between adjacent counter bearings an intermediate space is formed. 
     
     
         7 . Rotary cutting device according to  claim 1 , wherein the at least one counter bearing is disposed and configured in such a way that there arises at least one of the cutting roll and counter roll during the cutting operation an at least approximately symmetrical distribution of the flow of force in relation to at least one of the cutting roll length and counter roll length. 
     
     
         8 . Rotary cutting device according to  claim 1 , wherein the at least one counter bearing comprises an annular region that is disposed on the inner core. 
     
     
         9 . Rotary cutting device according to  claim 8 , wherein a width of the annular region is at most 30% of the total length of at least one of the counter roll and cutting roll. 
     
     
         10 . Rotary cutting device according to  claim 1 , wherein the outer sleeve is fixed on the at least one counter bearing. 
     
     
         11 . Rotary cutting device according to  claim 1 , wherein at least one seal is disposed between the outer sleeve and the inner core. 
     
     
         12 . Rotary cutting device according to  claim 11 , wherein the at least one seal is disposed on the end face of the outer sleeve. 
     
     
         13 . Rotary cutting device according to  claim 1 , wherein the at least one counter bearing is disposed symmetrically on at least one of the cutting roll and counter roll. 
     
     
         14 . Rotary cutting device according to  claim 1 , wherein one or more cutting edges are disposed on the outer sleeve of the cutting roll. 
     
     
         15 . Rotary cutting device according to  claim 1 , wherein, where the cutting roll and the counter roll are each provided with at least one counter bearing, counter bearings lie opposite one another. 
     
     
         16 . Rotary cutting device according to  claim 1 , wherein the cutting roll is supported on the counter roll by means of at least one supporting ring. 
     
     
         17 . Rotary cutting device according to  claim 16 , wherein a first supporting ring and a second supporting ring are provided, wherein the at least one counter bearing is disposed on at least one of the counter roll and cutting roll between the first supporting ring and the second supporting ring. 
     
     
         18 . Rotary cutting device according to  claim 1 , wherein the counter roll is rotatably mounted. 
     
     
         19 . Rotary cutting device according to  claim 1 , wherein the cutting roll is mounted at two ends on the machine frame. 
     
     
         20 . Rotary cutting device according to  claim 19 , wherein the counter roll is mounted at two ends on the machine frame. 
     
     
         21 . Rotary cutting device according to  claim 1 , wherein the cutting roll is mounted at one end on the machine frame. 
     
     
         22 . Rotary cutting device according to  claim 21 , wherein the counter roll is mounted at one end on the machine frame. 
     
     
         23 . Rotary cutting device according to  claim 1 , wherein one or more transverse cutting edges are disposed on the cutting roll. 
     
     
         24 . Rotary cutting device according to  claim 1 , wherein one or more longitudinal cutting edges are disposed on the cutting roll. 
     
     
         25 . Rotary cutting device according to  claim 1 , wherein the inner core and the outer sleeve form a unit that is rotatably held on the machine frame, with the inner core and the outer sleeve non-rotatable with regard to each other.