Crooked correcting unit of paper

The utility model relates to an affairs machine technical field relates to a crooked correcting unit of paper, including drive module, differential module and paper feed module, the differential module contains box of tricks, first output shaft and second output shaft, first output shaft with second output shaft set up respectively in the both sides of box of tricks, with first output shaft, second output shaft are corresponding is equipped with first transmission shaft and secondary drive axle, the paper feed module contains the hold -in range of bisymmetry setting and corresponding band pulley. Through the improvement to the paper feed module, adopt the form that has the hold -in range of friction surface, provide sufficient correction stroke, also because hold -in range and the increase of paper contact surface are more steady when the paper transmits, smooth and easy, the increase of friction surface simultaneously also provides higher life for the device is whole, and when the longer hold -in range surface friction force of live time weakens, also only need change the hold -in range during maintenance, and the maintenance cost is lower.