The utility model is applicable to the auxiliary technology field of the blanking machine. By respectively installing a pushing block and a holding block on the surface of the insert rod and the guide rod, the inclined plane of the pushing block can be driven to fit on the inclined plane of the holding block after the insert rod is inserted into the corresponding insert slot, so that the guide rod can drive the limit rod to move relative to insert the limit rod synchronously into the limit slot. Ensure that the insertion rod can carry out horizontal stop and stop treatment on the case at the same time, the limit rod can carry out vertical stop and stop treatment on the case simultaneously, and improve the speed of stop and stop on the case.