Cutting-off device for telescopic plastic pipe

The utility model belongs to the technical field of telescopic plastic pipe devices and particularly relates to a cutting-off device for a telescopic plastic pipe. The cutting-off device for the telescopic plastic pipe comprises a rack. Two clamping plates are arranged on the rack. A driving gear and a driven gear set are arranged between the clamping plates. The driving gear is connected with a gear motor. The driven gear set is connected with a cutter. The cutter comprises a round body. A cutting edge area is arranged on the side of the round body. The length of the cutting edge area is one fourth of the perimeter of the round body. A hook-like clamping knife is arranged at one end of the cutting edge area. The cutting-off device has the advantages that the telescopic plastic pipe can be cut off automatically, and the accuracy and the efficiency of cutting off the telescopic plastic pipe are improved.