Mold leaking machine

The invention discloses a mold leaking machine which is characterized in that a hydraulic cylinder is arranged at the bottom of a rack; a main mold moving control rod is longitudinally arranged in the rack; a mold leaking plate is arranged on the rack; a mold leaking hole is formed in the mold leaking plate; a main mold table plate is arranged above a hydraulic telescopic rod in the hydraulic cylinder; the periphery of the main mold table is arranged in the main mold moving control rod in a sleeving manner and can move up and down; a main mold is arranged in the main mold table plate; the main mold penetrates through the mold leaking hole in the mold leaking plate and can move up and down; positioning holes are formed in the periphery of the mold leaking plate; a sand box is arranged on the mold leaking plate; positioning pins arranged at the bottom of the stand box can be inserted into the positioning holes in the mold leaking plate; wedged inserting strips are arranged at the periphery of the inner surface of the sand box. According to the mold leaking machine, the mold can be pulled out slowly and stably, so that the sand shaping accuracy is high, the sand dropping and the sand collapsing can be avoided, the casting piece sand shaping efficiency is high, the sand box positioning is accurate, sand box pouring iron liquid is prevented from being permeated, the sealing of the sand box is ensured, the product accuracy is improved, the shaping speed is increased, and the product quality is ensured.