Corrugated board cutting device

The utility model discloses a corrugated board cutting device which comprises a working table and a base, a first conveying belt is arranged at one end in the working table, the first conveying belt is connected with a second conveying belt through a transmission belt, supporting seats are arranged on the two sides of the surface of the working table, and meanwhile the supporting seats are connected with a cutting cylinder through rotating shafts. A cutting opening is formed in the surface of the cutting cylinder, a fixing plate is arranged in the cutting cylinder, a first telescopic rod is arranged at the lower end of the fixing plate, and according to the corrugated board cutting device, through cooperation of the first telescopic rod, a cutting knife and the cutting cylinder, the cutting knife is controlled; the cutting length of a paperboard can be conveniently controlled by a worker according to the number of turns of rotation of the cutting cylinder, the corrugated paperboard can be conveniently cut by