Self-matching discharging box

The invention discloses a self-matching discharging box. The self-matching discharging box comprises a discharging roller, a box body, a swing frame installed in the box body, a translation frame installed on the swing frame and a discharging knife board installed at the top of the translation frame, and the discharging knife board is located above the box body; the self-matching discharging box further comprises a swing driving mechanism, the swing driving mechanism is used for driving the swing frame to swing front and back in a vertical plane, and when the swing driving mechanism drives theswing frame to swing front and back, the translation frame and the discharging knife board are driven to move towards or away from the discharging roller; and the self-matching discharging box further comprises a height adjusting mechanism, the height adjusting mechanism is used for adjusting the discharging knife board, so that the front end of the discharging knife board is matched with the height of the discharging ro