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US 6,638,142 B2Granted
Apparatus for sharpening blades
AssigneeKnecht Mashinenbau GmbH
InventorsManfred Knecht, Peter Heine
Life of this patent
Estimating the term…
Abstract
A device is proposed for sharpening knives in meat-processing machines, which enables a more precise movement of the sharpening tool (4) against the knife to be sharpened (2), in particular automatic control of this process. This is achieved according to the invention by providing a sensor for determining contact between the sharpening tool (4) and the knife (2).
Claims24
A device for sharpening knives comprising:
- (a) a knife clamping device;
- (b) a sharpening tool having a variable advance controlled by a monitor that varies advance as a knife mounted in said knife clamping device is being sharpened;
- (c) an electric motor for operating said sharpening tool;
- and
- (d) a sensor for detecting and measuring the relative motion between a knife mounted in said knife clamping device and said sharpening tool including said monitor for monitoring electric current used by said electric motor for operating said sharpening tool and responsively modifying said variable advance of said sharpening tool in response to current utilized by said electric motor for operating said sharpening tool.
2 more elements
A knife sharpening apparatus comprising:
- (a) a knife mounting means;
- (b) an electric motor for moving said knife mounting means;
- (c) a sharpening tool for sharpening a knife mounted in said knife mounting means;
- (d) an electric motor for the variable movement of said sharpening tool controlled by a monitor that varies said variable movement as a knife mounted in said sharpening tool is sharpened;
- (e) a sensor for measuring the relative movement between said knife mounting means and said sharpening tool;
- (f) a monitor for monitoring the current utilized by said electric motor for said variable movement of said sharpening tool and/or said electric motor for moving said knife mounting means;
- and
- (g) a free sharpening time dependence device for checking the status of the sharpening tool by free sharpening.
5 more elements
A knife sharpening apparatus comprising:
- (a) a knife mounting means;
- (b) an electric motor for providing the movement of said knife mounting means;
- (c) a sharpening tool having a variable advance controlled by a monitoring device for sharpening a knife mounted in said knife mounting means;
- (d) an electric motor for operating said sharpening tool;
- (e) a sensor for measuring the relative movement between said knife mounting means and said sharpening tool;
- (f) wherein said sensor includes said monitoring device for monitoring electric motor current used by said electric motor for operating said sharpening tool and/or electric motor current used by said electric motor for moving said knife mounting means.
3 more elements
Dependencies are inferred from the claim text.