Exhaust device for mold

An exhaust device for a mold comprises a fixing plate, inserting rods are arranged on the two sides, away from each other, of the fixing plate, the upper sides of the inserting rods are sleeved with limiting protrusions, a sealing plate is integrally formed on the limiting protrusions through casting, the upper side of the sealing plate is in threaded connection with a sealing ring, and a fixing block is arranged at the center of the upper end of the sealing ring. First grooves are formed in the two sides, away from each other, in the fixing block, the sealing plate and the bottom die are fixed through the inserting rods, the sealing grooves are connected with the sealing protrusions in an inserted mode, and fixing is achieved through the spring ejector pins, so that sealing is formed, and damage caused by untight sealing of the device in the exhaust process is reduced; meanwhile, the sealing ring is in threaded connection with the sealing plate, so that disassembly is convenient, and therefore, clogging in t