Cigarette rejecting and collecting device and cigarette carton sealing machine

The utility model discloses a cigarette rejecting and collecting device and a cigarette carton sealing machine. A photoelectric detector is arranged on the top portion of the inner side of a side plate of a collection box; a reflecting plate is arranged on the top portion of the inner side of another side plate of the collection box; and the two side plates are opposite to each other. The reflecting plate reflects light transmitted by the photoelectric detector back to the photoelectric detector. A control device is connected with the photoelectric detector and an alarm device. If the duration that the photoelectric detector does not receive the light reflected back by the reflecting plate exceeds a duration threshold, the controller sends an alarm signal to the alarm device. The cigarette rejecting and collecting device disclosed by the utility model can detect whether the collection box is filled up by the rejected cigarettes or not, and can alarm in such a condition that the collection box is filled up so