Blanking clamp of injection molding machine and using method of blanking clamp

The invention relates to the technical field of injection molding machine discharging clamps, in particular to an injection molding machine discharging clamp which comprises a mounting plate, a lower rotating machine base is arranged at the top of the mounting plate, a rotating disc frame is arranged on the upper side of the lower rotating machine base, and a first arm frame is mounted on the upper left side of the rotating disc frame; a first motor is installed on the upper right side of the rotary table frame and corresponds to the first arm frame, a second arm frame is installed on the upper left side of the first arm frame, a connecting frame is arranged at the front end of the second arm frame, and a clamp assembly is arranged below the connecting frame. A supporting plate, a limiting plate, a rotating rod, an external buckle, a through groove, a first electric push rod and a hinged support strip which are arranged can drive a grabbing and clamping frame, a clamping plate and a clamping jaw to do opening