Apparatus and method for winding strips of material not intended for processing

Abstract

The invention concerns an apparatus and a method for winding strips of material not intended for processing, in particular within an apparatus for joining a web of material running off a first reel to a web of material running to a second reel. Known apparatuses have a winding element with a receptacle for the web of material or strip of material, the strip of material being taken up by rotating the winding element. However, it is problematic that the web of material or strip of material slips out of the receptacle during winding, so that reliable take-up is not ensured. By means of the invention, namely, the arrangement of an element for holding the web of material or strip of material in the region of the receptacle, the web of material or strip of material is reliably caught and held, in particular even after the strip of material is separated from the web of material.

1 . Apparatus for winding strips of material not intended for processing, in particular within an apparatus for joining a web of material running off a first reel to a web of material running to a second reel, including a rotationally drivable winding element with a receptacle for webs of material or strips of material not intended for processing, characterized in that in the region of the receptacle is arranged an element for holding or catching the strip of material.  
   
   
       2 . Apparatus according to  claim 1 , characterized in that the winding element is arranged in the region of the outgoing web of material and composed of a rotary body, e.g. a roller, drum or the like.  
   
   
       3 . Apparatus according to  claim 1 , characterized in that the receptacle is a through-slot running radially to the end face of the winding element.  
   
   
       4 . Apparatus according to  claim 1 , characterized in that the element for holding or catching is arranged within the slot.  
   
   
       5 . Apparatus according to  claim 1 , characterized in that the element is a body of mass inertia.  
   
   
       6 . Apparatus according to  claim 1 , characterized in that the element is a guided body.  
   
   
       7 . Apparatus according to  claim 6 , characterized in that the element is a guided ball.  
   
   
       8 . Apparatus according to  claim 6 , characterized in that the element ( 20 ) is a guided cylinder.  
   
   
       9 . Apparatus according to  claim 6 , characterized in that the guide is a connecting link guide which is oriented after the fashion of a secant.  
   
   
       10 . Apparatus according to  claim 1 , characterized in that the element is a pivot lever.  
   
   
       11 . Apparatus according to  claim 10 , characterized in that the pivot lever is a pendulum which is arranged in the region of a projection within the slot.  
   
   
       12 . Apparatus according to  claim 11 , characterized in that the pendulum or the pivot point of the pendulum lies outside the path of transport of the web of material in the rest position of the winding element.  
   
   
       13 . Apparatus according to  claim 12 , characterized in that the position of the pivot point depends on the direction of rotation of the winding element, wherein the web of material or strip of material always lies between the pivot point and an inner surface of the slot as a stop face.  
   
   
       14 . Apparatus according to  claim 1 , characterized in that the element for holding or catching includes a means for subjecting the strip of material to compressed air.  
   
   
       15 . Apparatus according to  claim 14 , characterized in that the means is arranged in the region of the slot in such a way that the strip of material can be pressed by the compressed air against or round a surface in the region of the slot.  
   
   
       16 . Apparatus according to  claim 14 , characterized in that the means is arranged behind the winding element in the direction of transport of the web of material.  
   
   
       17 . Apparatus according to  claim 1 , characterized in that the element for holding or catching includes a means for forming a vacuum.  
   
   
       18 . Apparatus according to  claim 17 , characterized in that the means has several component parts for forming a vacuum, which are arranged at different positions in the region of the web of material or strip of material behind the winding element in the direction of transport of the strip of material, so that the strip of material can be drawn in.  
   
   
       19 . Method for winding strips of material not intended for processing, which occur in particular when joining a web of material running off a first reel to a web of material running to a second reel, including the steps of: 
 passing the web of material or strip of material through a receptacle of a stationary winding element during the operation of joining the webs of material, and,    just before completion or upon completion or just after completion of the joining operation, winding the strip of material by rotating the winding element,    characterized by the steps of:    actively holding or catching the strip of material in the receptacle at least during the beginning of rotation of the winding element.    
   
   
       20 . Method according to  claim 19 , characterized in that the strip of material is clamped by a pivot lever or the like having mass inertia.  
   
   
       21 . Method according to  claim 19 , characterized in that the strip of material is pressed by compressed air against or round a surface in the region of the receptacle and so held or caught.  
   
   
       22 . Method according to  claim 19 , characterized in that the strip of material is drawn in by a vacuum in the region of the receptacle and so held or caught.