Single-sheet lifter

A system comprising a single-sheet lifter and a loading machine, wherein the single-sheet lifter comprises:

• a base frame arranged in a vicinity of a loading area and extending vertically;
• a separation unit provided to the base frame so as to be able to move up and down, the separation unit including a contact member that comes into contact with a surface of an uppermost workpiece among a plurality of the workpieces loaded in the loading area, the separation unit being configured to go up following a lifting operation of a workpiece suction lifter of the loading machine being provided separately from the single sheet lifter and be retracted from above the loading area when the workpiece suction lifter sucks the surface of the uppermost workpiece to lift the workpiece, and configured to separate the uppermost workpiece from other workpieces by means of at least one of an injection pressure of air and a suction force;
• and
• a counter balancer configured to reduce a weight acting on the separation unit.