Novel waste cigarette bar decomposing and recycling device of cigarette making machine

The utility model discloses a novel waste cigarette bar decomposing and recycling device of a cigarette making machine. The novel waste cigarette bar decomposing and recycling device comprises a cigarette bar box, a tobacco shred recycling box and a knife roll. One side of the bottom of the cigarette carton box is connected with one side of the top of the tobacco shred recycling box through a supporting plate, so that a decomposition space is formed between the cigarette carton box and the tobacco shred recycling box; the knife roll is arranged on the supporting plate, a cigarette bar in the cigarette bar box is in contact with a blade of the knife roll, and cigarette paper of the cigarette bar is cut off by the knife roll; an opening is formed in the upper surface of the tobacco shred recycling box, a filter screen is laid at the opening, and tobacco shreds obtained after the tobacco strips are cut can penetrate through the filter screen and fall into the tobacco shred recycling box, so that cigarette paper