... march. Its structure mainly includes: The motor, the tire baffle, the guidance board, the blade, the pulley, ... stretches, installed on the car, out of the tire back plate, then hangs the inner loop of ... cancels, after that the knife retracts in the tire back plate by the cylinder impetus, under the ... cutting edge bead the tire. Advantages:1. The fixed blade uses the high quality tool steel, the movable ...