KNIFE DETECTION AND SHARPENING SYSTEM

Abstract

A knife detection and sharpening system (2) configured to be installed in a machine frame (1) of a splitting machine and located next to a band knife (11) which is an annular loop and is driven by two knife drive wheels (10), wherein the knife detection and sharpening system (2) is located next to a wheel shaft (101) of one of the two knife drive wheels (10); wherein the knife detection and sharpening system (2) is controlled by a computer of the splitting machine and comprises the following: a resistance detector (20) which is connected to the wheel shaft (101) of one of the two knife drive wheels (10) and is electrically connected to the computer; an electric sharpening device (30) which is mounted in the machine frame (1) of the splitting machine and includes the following: two electric sharpening modules (30A, 30B) controlled by the computer to sharpen a blade of the band knife (11), to be retracted from the band knife (11) and to automatically remove the dust generated after sharpening the band knife (11), wherein the two electrical sharpening modules (30A, 30B) are each configured to sharpen two sides of the blade of the ring-shaped band knife (11); wherein each of the two electrical sharpening modules (30A, 30B) comprises the following: a knife rack (31) comprising the following: a wheel connection section (313); and a pivotably connecting end (311) arranged at one end of the wheel connection section (313); wherein the knife frame (31) is pivotably connected to the machine frame (1) by the pivotably connecting end (311) in combination with a pivotable rod (312); a sharpening wheel (32) which is rotatably mounted on the wheel connection section (313) of the knife frame (31); a sharpening wheel motor (33) which is mounted on one side of the wheel connection section (313) of the knife frame (31) and connected to the sharpening wheel (32), wherein the sharpening wheel motor (33) is controlled by the computer; a wheel feed assembly (34) mounted on the machine frame (1) and connected to the wheel connection section (313) of the knife frame (31); wherein the wheel feed assembly (34) is controlled by the computer to drive the knife frame (31) to rotate on the pivotable rod (312); wherein the knife frame (31) is rotated to bring the sharpening wheel (32) into contact with a side of the band knife (11) which has the blade and to retract the sharpening wheel (32) from the band knife (11) wherein the wheel feed assembly (34) comprises: a threaded rod (341), wherein one end of the threaded rod (341) is provided with a thread and is connected to the wheel connection section (313); and a servomotor (342) mounted on the machine frame (1) and controlled by the computer; wherein another end of the threaded rod (341) is connected to a motor shaft of the servomotor (342), thereby controlling the wheel feed assembly (34) to drive the sharpening wheel (32) in the knife frame (31) to come into contact with the blade of the band knife (11) and be retracted by the band knife (11); a cleaning assembly (35) mounted on the machine frame (1) and connected to an external fluid source; wherein the cleaning assembly (35) is controlled by the computer to spray pressurized fluid towards the sharpening wheel (32) in order to remove the dust remaining on a surface of the sharpening wheel (32).

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