Automatic leftover collecting and packaging system for waste cotton processing production line

The utility model discloses an automatic leftover collecting and packaging system for a waste cotton processing production line. The automatic leftover collecting and packaging system comprises a movable rack, a crushed material suction head, a collecting barrel, a discharging device and a packaging device. The collecting barrel, the discharging device and the packing device are installed on the movable machine frame, the crushed material suction head is communicated with the collecting barrel through a material guiding pipe, and the outer end of the collecting barrel is connected with a suction fan. When the waste cotton processing production line leftover collecting device works, the suction fan works, generates negative pressure and sucks leftovers of a waste cotton processing production line into the collecting barrel through the crushed material suction head; the leftovers are conveyed to the collecting barrel and then enter the discharging device of the collecting barrel recently, the discharging device