The invention relates to casting machinery and concretely relates to a storage device of a parting device capable of automatically acquiring an installation sand core. The storage device comprises a support frame, a storage sprocket wheel, a storage band chain, a leading screw bearer, a leading screw, a sliding bar, a sliding block, a chute, two sprocket wheel motors, a leading screw motor, a suction device and a rotation shaft a. The storage sprocket wheel is connected to the support frame by the rotation shaft a. The storage band chain is connected to the storage sprocket wheel. The leading screw bearer is installed on the support frame. The leading screw is connected to the leading screw bearer. Two ends of the sliding bar are respectively connected to the storage band chain. The sliding block is connected to the leading screw. The chute is connected to the support frame. The two sprocket wheel motors are respectively installed on left and right sides of the support frame. The leading screw motor is connected to the support frame. The suction device is connected to the sliding bar. The mechanized device realizes regular storage of a parting device sand core, is convenient for use and has high work efficiency.