Sprue shearing device for injection molding knife, fork and spoon

The utility model provides a sprue shearing device for injection molding knives, forks and spoons, and belongs to the field of tableware production and packaging automation. The injection molding knife, fork and spoon shearing sprue device comprises a base, and an air cylinder, a rotating air cylinder, an air shear and a product placing disc which are mounted on the base, a plurality of air shears are arranged in a radial mode and connected to a base in series through an air cylinder and a rotating air cylinder, the air shears can ascend, descend and rotate under the control of the air cylinder and the rotating air cylinder, and the rotating angle is controlled to be at one product position. When the air shear ascends, a shear opening is over against the sprue position; through the automatic steps of air shear ascending, sprue shearing, air shear descending, air shear rotating, air shear ascending again, sprue shearing and the like, the knife, fork and spoon products in the product containing disc arranged ab