Device for cleaning a functional surface for guiding or treating a material web

Abstract

The disclosure relates to a device for cleaning a functional surface for guiding or treating a material web, preferably a non-woven wed. The device includes a pivotably mounted roller body, a plurality of hollow cylindrical brush segments being disposed on the circumference thereof and positively connected to each other and tensioned between two adjusting rings disposed at the circumference of the roller body. According to various embodiments, in order to ensure secure tensioning of the brush segments regardless of the surrounding conditions, at least one of the adjusting rings is axially flexibly retained at the circumference of the roller body and a compression ring rotationally fixed to the flexible adjusting rings is axially tensioned against the roller body by means of at least one spring element, such that an axial force acting on the brush segments is generated.

1 . A device for cleaning a functional surface for processing a material web, the device comprising a rotatably supported roller body which has multiple hollow cylindrical brush segments at its periphery, the brush segments being connected to one another in a positive-fit manner, and the brush segments being tensioned between two adjusting rings situated at the periphery of the roller body,
 wherein:
 at least one of the adjusting rings is mounted in an axially movable manner at the periphery of the roller body; and 
 a clamping ring that is connected to the at least one axially movable adjusting ring in a rotationally fixed manner is axially braced against the roller body with at least one spring element in such a way that an axial tension force is generated which acts on the brush segments. 
   
     
     
         2 . The device according to  claim 1 ,
 wherein:
 the roller body has two axially-opposite end faces; 
 the clamping ring is axially braced against a first end face of the two end faces of the roller body; 
 another clamping ring is axially braced against a second end face of the two end faces of the roller body, the other clamping ring being connected in a rotationally fixed manner to another movably mounted adjusting ring, the clamping ring and the other clamping ring generating axial tension forces which act oppositely on the roller body. 
   
     
     
         3 . The device according to  claim 1 ,
 wherein:
 the spring element is formed by multiple compression springs which are uniformly distributed at the end face of the roller body. 
   
     
     
         4 . The device according to  claim 1 ,
 wherein:
 the spring element is formed by multiple disk spring assemblies which are uniformly distributed at the end face of the roller body. 
   
     
     
         5 . The device according to  claim 4 ,
 wherein:
 the disk spring assemblies are clamped between one of multiple fastening elements and the clamping ring. 
   
     
     
         6 . The device according to  claim 5 ,
 wherein:
 the fastening elements are screws for the rotationally fixed fastening of the clamping ring to an end wall of the roller body, the clamping ring having multiple drill bushings for accommodating the screws. 
   
     
     
         7 . The device according to  claim 1 ,
 wherein:
 the adjusting rings and the brush segments are connected to one another in a positive-fit manner at the periphery of the roller body by end-face toothing in each case. 
   
     
     
         8 . The device according to  claim 1 ,
 wherein:
 the brush segments are connected to one another at the periphery of the roller body by end-face toothing. 
   
     
     
         9 . The device according to  claim 8 ,
 wherein:
 the brush segments at the periphery of the roller body are arranged together to form a brush width in the range of 2000 mm to 4000 mm. 
   
     
     
         10 . The device according to  claim 1 ,
 wherein:
 the roller body has two axially-opposite end faces; 
 for accommodation on a roller support, the roller body has stub axles projecting at each end face, one of the stub axles being coupled to a drive. 
   
     
     
         11 . The device according to  claim 10 ,
 wherein:
 the roller support has a movable design, the roller body being guidable between an operating position and a neutral position. 
   
     
     
         12 . The device according to  claim 10 ,
 wherein:
 the roller body is formed by a double-tube shell having an inner tube and an outer tube which are connected to the stub axles at both end faces. 
   
     
     
         13 . The device according to  claim 12 ,
 wherein:
 a holding sleeve is attached at the periphery of the double-tube shell, the brush segments being mounted so as to be pushable onto the holding sleeve.