Circular knives and case cut-off knives
We are happy to offer you individual dimensions in addition to the standard ones.
| Diameter | 50–240 mm |
|---|---|
| Areas of application | Paper, cardboard, labels, adhesive tape / film, foil, plastic / nonwoven, textile, special materials |
Circular knives and case cut-off knives from DIENES
Dust accumulation, short service life, unclean cut edges, uneven roll surface, adhering adhesive and dimensional stability of the cut rolls are all issues we have dealt with extensively for decades.
DIENES offers innovative solutions for all aspects of case cutting, using the following cutting methods:
- fixed circular knives that cut into the rotating sleeve
- driven circular knives that cut into the rotating sleeve
- co-rotating circular knives that cut into the rotating sleeve
We have dealt in depth with the optimization of tool life through improved knife materials and surface quality. In addition, we are happy to help you improve manufacturing tolerances and optimally adjust the cutting geometry and knife hardness.
Using circular knives and case cut-off knives
Depending on the cardboard core dimensions and core thickness, the bevel geometry must be adapted to the requirements.
In addition, the centricity of the knife edges is an essential factor for the quality of the knife.
Nowadays, due to their longer service life, high-speed steel knives have almost completely replaced the usual cold-work steels.
Sleeve tapping stations from DIENES
In slitting, the cut individual webs are fed either to a common winding shaft or to two winding shafts. The length of the cardboard tubes to whose circumference the individual webs are glued and wound corresponds to the cutting width set at the slitting station.
The knife holders located on the core cutting station are motorised into the respective cutting position. The cutting station is electrically connected to the fully automatic knife adjustment system of the slitting unit so that the core lengths correspond exactly to the set cutting width. By means of freely selectable correction dimensions, the lengths of the winding cores can be adapted to the requirements.
Pneumatically operated knife holders for the sleeve piercing station are equipped with sharpened knives, which are set in rotation by the driven cardboard sleeve.
When using several knife holders, it is ensured that the repositioning for the longitudinal cuts and the sleeve separation are completed at approximately the same time.
Your advantages
- Precise cutting with excellent cutting edge
- Improved manufacturing tolerances
- optimised blade life
- Turning by cycle possible if required