Cross-cutting device

Abstract

The invention relates to a cutting device for cutting prefabricated transverse seal seams of a tube composed of plastic film and filled with food, particularly soft cheese, wherein each transverse seal seam of the continuously supplied film tube to be processed separates one portion of the food from the next portion, wherein said device comprises a rotating knife holder provided with at least one knife blade 22, and wherein the knife blade 22 acts on a counter bearing 4 when cutting a transverse seal seam, wherein said knife holder has a heating element for heating the knife blade 22 in a targeted fashion.

1 . Cutting device for cutting pre-fabricated transverse seams of a plastic-film sleeve that is filled with food, in particular with processed cheese, whereby each transverse seam of the film sleeve to be processed and continuously fed separates one portion of the food from the next portion, whereby the device has a rotating knife holder equipped with at least one cutting blade ( 22 ), and whereby the cutting blade ( 22 ) strikes against an opposing bearing ( 4 ) when cutting a transverse seam,
 characterized in that   the knife holder has a heating element for targeted heating of the cutting blade ( 22 ).   
   
   
       2 . Cutting device, according to  claim 1 ,
 wherein   the heating element is arranged in such a way that a majority of its heat output is fed to the cutting blade ( 22 ) and heats the latter more greatly than the knife holder.   
   
   
       3 . Cutting device according to  claim 1 ,
 wherein   the cutting blade ( 22 ) is held elastically on the knife holder in the cutting direction.   
   
   
       4 . Device according to  claim 1 ,
 wherein   the knife holder is a blade cylinder ( 2 ), which is equipped with several, in particular with four, cutting blades ( 22 ), whereby a counter-rotating opposing roller ( 4 ) forms the opposing bearing.   
   
   
       5 . Cutting device according to  claim 1 ,
 wherein   the cutting blade ( 22 ) rests on a support surface, whereby the heating element is arranged in a hole ( 30 ) of the solid material that forms the support surface.   
   
   
       6 . Cutting device according to  claim 5 ,
 characterized by   a separate receiving part ( 23 ) for holding in each case a cutting blade ( 22 ), which is held in a radially oriented guideway of the knife holder and is pressed down by springs ( 24 ).   
   
   
       7 . Cutting device according to  claim 5 ,
 characterized by   the fact that the material of the knife holder forms the support surface ( 27 ), whereby the support surface ( 27 ) is oriented in particular outside of the radials of the blade cylinder ( 2 ).   
   
   
       8 . Cutting device according to  claim 7 ,
 wherein   the cutting blade ( 22 ) is formed by a flat material, in particular made of hard metal, with a rectangular cross-section, whereby the four edges of the flat material in each case form a cutting edge ( 29 ).   
   
   
       9 . Cutting device according to  claim 1 ,
 wherein   the heating element produces a temperature on the cutting edge ( 29 ) of the cutting blade of over 80° C., in particular of about 100° C.   
   
   
       10 . Cutting device according to  claim 1 ,
 wherein   the knife holder is provided with a sensor to measure temperature and/or with a cooling system.   
   
   
       11 . Cutting device according to  claim 1 ,
 wherein   the cutting edge ( 29 ) of the cutting blade ( 22 ) is such that in particular it is shorter than the transverse seam, so that after cutting, film arms remain or a perforation seam is produced.