Cutting apparatus
AssigneeGammerler AG
InventorsGunter Gämmerler, Ralf Elvert, Helmut Schirmacher
Life of this patent
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Abstract
A monitoring device for the spacing between the knives is provided in a rotation cutting apparatus having a rotation cutting knife and a counter-knife which partly overlap in the cutting region and form a cutting gap.
Claims12
A rotation cutting device having a rotation cutting knife and a counter-knife which each have an electrically conductive blade, partly overlap in the cutting region and form a cutting gap, wherein the blade of the rotation cutting knife and the blade of the counter-knife are each electrically insulated with respect to one another;
- and wherein the blade of the rotation cutting knife and the blade of the counter-knife are each electrically connected to an input of a monitoring device which monitors the electric resistance between the two inputs and emits a signal when the resistance falls short of a pre-set threshold value.
A method for the monitoring of the cutting gap width of a rotation cutting apparatus having a rotation cutting knife and a counter knife which partly overlap in the cutting region, form a cutting gap and have the respectively electrically conductive blades which are electrically insulated with respect to one another, in which method the DC or AC resistance between the blades is monitored and a signal is emitted when the DC resistance or the reactive current portion of the AC resistance fails short of a pre-set threshold value.
Dependencies are inferred from the claim text.