Apparatus for severing (collar) blanks from a web of material
AssigneeFocke & Co. (GmbH & Co.)
InventorsHeinz Focke, Frank Oberschelp
Life of this patent
Estimating the term…
Abstract
An apparatus for severing (collar) blanks from a web of material is disclosed. Knife rollers (10) which are provided with knife edges (17) are used to sever blanks of (thin) cardboard from a web. A knife roller (10) is pressed against a counter roller (11). For this purpose, there are provided resiliently adjustable pressure elements (30). The pressure is exerted on the counter roller (11) in the region of annular supporting elements, in particular annular rims (18). The annular rims (18) for exerting pressure are designed such that they are slightly resiliently compressible in the region of contact with the counter roller (11). For this purpose, the annular rims are especially designed to be Z-shaped in cross section.
Claims9
In an apparatus for severing collar blanks of a hinge lid pack from a web of material, said apparatus comprising:
- a rotatable knife roller (10) having a rotational axis and having severing knife edges (17) in a region of an outer periphery thereof;
- a likewise rotatable counter roller (11) having an outer periphery and acting as a counter means for the knife roller (10);
- and adjustable pressure means for pressing said knife roller (10) against the counter roller (11) with a contact pressure;
- the improvement wherein:
- a) the outer periphery of the knife roller (10) comprises a cylindrical shell surface;
- b) outside the region of the knife edges (17), the knife roller (10) has, at an axial end of the cylindrical shell surface, a plurality of parallel annular supporting means for supporting the knife roller on the periphery of the counter roller (11);
- c) said supporting means comprise parallel annular rims (18) having annular grooves (19) formed therebetween;
- and
- d) said adjustable pressure means exert sufficient contact pressure of the knife roller (10) on the counter roller (11) to cause the annular rims (18) to be slightly radially compressible in a resilient manner.
Dependencies are inferred from the claim text.