Knife detecting and sharpening system

A knife detecting and sharpening system configured to be installed in a machine base of a splitting machine and being adjacent to a band knife, which is an annular loop and is driven by two knife-driving wheels, and the knife detecting and sharpening system adjacent to a wheel shaft of one of the two knife-driving wheels;

• the knife detecting and sharpening system controlled by a computer of the splitting machine and comprising:
• a resistance detector connected to the wheel shaft of said one of the two knife-driving wheels and electrically connected to the computer;
• the resistance detector automatically, and continuously or intermittently detecting a torque of said driven knife-driving wheel, and transmitting a magnitude of the torque to the computer so that the computer determines whether the amount of the torque is greater than a default value, thereby deciding to operate a stop-sharpening mode or to switch to a sharpening mode;
• and
• an electric sharpening device mounted in the machine base of the splitting machine and comprising
• two electric sharpening modules controlled by the computer to sharpen a blade of the band knife, to be withdrawn from the band knife, and to automatically clean dust generated after the band knife is sharpened;
• the two electric sharpening modules respectively configured to sharpen two sides of the blade of the band knife;
• each one of the two electric sharpening modules comprising
• a knife base having
• a wheel-connecting portion;
• and
• a pivotally-connecting end disposed at an end of the wheel-connecting portion;
• the knife base pivotally connected to the machine base through the pivotally-connecting end combined with a pivotal rod;
• a sharpening wheel rotatably mounted at the wheel-connecting portion of the knife base;
• a sharpening-wheel motor mounted at a side of the wheel-connecting portion of the knife base and connected to the sharpening wheel, and the sharpening-wheel motor controlled by the computer;
• a wheel-feeding assembly mounted at the machine base and connected to the wheel-connecting portion of the knife base;
• the wheel-feeding assembly controlled by the computer to drive the knife base to rotate on the pivotal rod;
• the knife base rotated to let the sharpening wheel contact a side, which has the blade, of the band knife and to withdraw the sharpening wheel from the band knife;
• a cleaning assembly mounted at the machine base and connected to an exterior fluid source;
• the cleaning assembly controlled by the computer to spurt pressurized fluid toward the sharpening wheel to clean the dust remaining at a surface of the sharpening wheel.