Cutting and Transport Device for Webs of Material

Abstract

The invention describes a cutting and transport device for material sheets ( 1 ) of paper or film, which comprise at least one cutting device ( 7 ), which cuts the material sheet traversing in the cutting or the transport device. Inventive step lies in that the cutting and transport device ( 22 ) is provided with a sheet reinforcement device ( 10 ), which reinforces the material sheet with the reinforcement material ( 13 ) at the positions which are later cut by the cutting tool ( 7 ).

1 . Cutting and transport device for material sheets ( 1 ) of paper or film, comprising at least one cutting tool ( 7 ), which cuts the material sheet running in the cutting or transport device ( 22 ), 
 characterized by    a sheet reinforcement device ( 10 ), which reinforces the material sheet ( 1 ) with reinforcement material ( 13 ) at the places, which are later cut by the cutting tool ( 7 ).    
   
   
       2 . Device according to  claim 1 , 
 characterized by    a control device, which registers 
 the position of the reinforcement material ( 13 ) on the sheet ( 1 ) in the direction of the transport of the sheet (z) and/or  
 the time, when the reinforcement material ( 13 ) is to be applied,  
 as well as  
 the velocity of the sheet between the position, where the reinforcement material is to be applied, and the position, where the cutting tool ( 7 ) cuts the sheet,  
   calculates on the basis of these values when the reinforcement material will pass through the area of the action by the cutting tool and regulates the cutting tool in such a manner that it cuts the sheet apart at the reinforced place.    
   
   
       3 . Device according to  claim 1 , 
 characterized in that    the sheet reinforcement device ( 10 ) comprises the means for application of a viscous reinforcement material.    
   
   
       4 . Device according to  claim 1 , 
 characterized in that    the sheet reinforcement device ( 10 ) comprises the means for application of a material strip ( 13 ).    
   
   
       5 . Device according to  claim 1 , 
 characterized in that    the material reinforcement device ( 10 ) comprises an application roller ( 10 ) for the transport of the material strip ( 13 ), which can be so positioned that it can roll along with the material sheet ( 1 ) during the operation and transfer the material strip ( 13 ) on the sheet ( 1 ) during this rolling motion.    
   
   
       6 . Method for transport and cutting of material sheets of paper or film, 
 in which at least one cutting tool ( 7 ) cuts a running material sheet at the cutting points,    characterized in that    a sheet reinforcement device ( 10 ) reinforces the material sheet with the reinforcement material ( 13 ) at the places, which are later to be cut by the cutting tool ( 7 ).    
   
   
       7 . Method according to the preceding claim 
 characterized in that    the sheet reinforcement device ( 10 ) reinforces the material sheet ( 1 ) with the reinforcement material ( 13 ), which material strips ( 13 ) have at least one self-adhesive surface.    
   
   
       8 . Method according to  claim 6 , 
 characterized in that    a material sheet ( 1 ) made of a plastic material is cut.    
   
   
       9 . Method according to the preceding claim, 
 characterized in that    the plastic material contains polypropylene.    
   
   
       10 . Method according to  claim 8 , 
 characterized in that    the plastic material is a stretched plastic material.    
   
   
       11 . Device for winding running material sheets ( 1 ) on winding cores ( 8 , 9 ), in which full winding cores ( 8 ) are exchangeable against empty winding cores ( 9 ), and which exhibits the following characteristics: 
 one or more winding positions at which the winding cores ( 8 ) can be linked and can be winded with the film,    at least one cutting device with a cutting tool ( 7 ), which cuts apart the material sheet ( 1 ), if full winding cores ( 8 ) are to be exchanged against empty winding cores ( 9 ) during operation,    a winding device, which fixes the initial part of the material sheet ( 1 ) formed by the cutting process on a new winding core ( 9 ),    characterized in that    the winding device comprises a cutting and transport device ( 22 ) according to  claim 1  can be employed with it.    
   
   
       12 . Winding device according to the preceding claim, 
 characterized in that    the cutting device is integrated in a material transport roller ( 2 - 6 ).    
   
   
       13 . Winding device according to the preceding claim, 
 characterized in that    the cutting device is integrated in the last material transport roller ( 6 ), which is located in the direction of the transport (z) of the material sheet ( 1 ) just before the winding core ( 8 , 9 ).    
   
   
       14 . Winding device according to  claim 1 , 
 characterized in that    the winding device is embodied as a turret winding device, in which the winding process can be take place in both directions of rotation of the last material transport roller ( 6 ), which is located in the direction of transport (z) of the material sheet ( 1 ) just before the winding core ( 8 , 9 ).