Dicing cutter

The invention discloses a dicing cutter. A screening device is mounted and fixed at the bottom of the dicing cutter. The dicing cutter comprises a shell and a dicing motor. The dicing motor is mountedand fixed to the top of the shell. A roller type rotary knife is fixed to an output end of the dicing motor. A silicone roller and a lower roller are arranged at one end of the roller type rotary knife and arranged in parallel up and down, and in addition, the silicone roller and the lower roller are oppositely matched with each other rotationally. The outer sides of bearings at the two ends of the silicone roller and the lower roller are sleeved with bearing protective housings correspondingly. According to the dicing cutter provided by the invention, the screening device can be used for effectively screening out unqualified plastic particles produced due to ageing of dicing cutter equipment, the product overall quality is improved, no manual sorting is needed, the efficiency is higher,in addition, the bearings