Paper sheet processing apparatus

A paper sheet processing apparatus comprising:

• a supply unit configured to store a plurality of stacked paper sheets;
• a pick-up mechanism configured to pick up the paper sheets from the supply unit;
• an inspection device configured to inspect paper sheets which have been picked up;
• a stacking device configured to stack a predetermined number of paper sheets which have been inspected;
• and
• a wrapping device configured to wind a band around a stacked paper sheet bundle and wrap the stacked paper sheet bundle,
• the wrapping device comprising:
• a clamp mechanism configured to curve the stacked paper sheet bundle by pressing both side portions of the stacked paper sheet bundle;
• a band winding device configured to wind a wrapper band around the curved stacked paper sheet bundle, and to pull and tighten the wrapper band;
• and a heater configured to heat-seal an end of the wrapper band which has been wound,
• the clamp mechanism comprising:
• a rotatable arm configured to be movable to a position where the rotatable arm faces a first surface of the paper sheet bundle;
• and two press members mounted on the rotatable arm and configured to come into contact with the first surface of the paper sheet bundle, each of the press members comprising a slanted press portion projecting from the rotatable arm and configured to come into contact with the first surface of the paper sheet bundle, the two press members being provided on the rotatable arm to be linearly moveable closer to each other and away from each other to adjust a degree of curvature of the stacked paper sheet bundle.