Cutting device used on rubber cutting machine

The utility model discloses a cutting device used on a rubber cutting machine, which comprises two symmetrically arranged support plates, the front end between the support plates is fixedly connected with a feeding flat plate, the feeding flat plate is used for placing rubber to be cut, the rear end between the support plates is fixedly connected with a discharging flat plate, the upper end between the support plates is provided with a rotating shaft, and the rotating shaft is fixedly connected with the feeding flat plate. The rotating shaft is connected with a power device of the rubber cutting machine, a cutting knife is arranged on the rotating shaft, the cutting knife is circular, the radial section of the cutting knife is rhombic, the lower end of a dividing knife is fixedly connected to the discharging flat plate, the edge of the dividing knife right faces the edge of the cutting knife, and the dividing knife is used for preventing cut rubber from being adhered together. According to the utility model,