Apparatus for longitudinally cutting webs of material
AssigneeWindmoller & Holscher
InventorsWilfried Wallmann, Manfred Menzel, Dieter Peschel
Life of this patent
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Abstract
In a slitting apparatus for a web of material such as paper, comprising a circular knife which, in its operation position, co-operates with one of a plurality of counter-blades defined at the periphery of a grooved roller, the rotary axis of the knife in the operative position of the latter is inclined at an acute angle to the roller axis.
Claims6
Apparatus for longitudinally cutting webs of material, especially paper webs, comprising a freely rotatably mounted circular knife which can be applied to cutting edges of a grooved backing roller defining the counter-knife, characterised in that in the cutting position the circular knife (1) is inclined to the axis of the counter-knife (2) by an angle of incidence (.alpha.), and characterised in that the circular knife is disengageable from the counter-knife by movement in the direction of the angle of incidence (.alpha.) so that the width of cut is changeable during movement of a web to be cut.
Apparatus for longitudinally cutting webs of material, especially paper webs, comprising:
- a grooved backing roller having an axis and defining a counter-knife with cutting edges;
- a shaft spaced from and inclined to the axis of the counter-knife;
- a circular knife freely rotatably mounted on said shaft and inclined to the axis of the counter-knife by an angle of incidence (.alpha.);
- link means for supporting said shaft;
- and
- means for moving said link means in a direction perpendicular to the angle of incidence (.alpha.) so that said circular knife is moved between a cutting position in which said circular knife engages a cutting edge of said counter knife and a position spaced from said circular knife.
Dependencies are inferred from the claim text.