Mold base positioning device for mold base machining

The utility model discloses a mould base positioning device for mould base processing, which relates to the technical field of mould base processing and positioning and comprises a mould base processing and positioning device body, the mould base processing and positioning device body comprises a lap joint supporting table, and a mould base is in lap joint on the outer side surface of the top of the lap joint supporting table. The inner side surface of the lap joint supporting table is movably sleeved with a mold blank limiting mechanism, a thread pushing unit is arranged on the outer side surface of the lap joint supporting table, and a swing sliding unit is arranged on the outer side surface of the thread pushing unit. A mold blank is in lap joint with the outer side surface of the top of the lap joint supporting table and is matched with the double-strand threaded rod on the inner side surface of the lap joint sliding rail to rotate, so that the sliding block on the outer side surface of the double-strand