The utility model provides a mould frame with a self-cleaning function, which relates to the technical field of mould frames and comprises a base and a mounting box, a lower mould plate is fixedly mounted on the upper surface of the base, and a groove is formed in the side surface of the base in a penetrating manner. The device is provided with a base, a mounting box, a lower mold plate, a groove, a supporting column, an upper mold base, a
hydraulic cylinder, an upper mold plate, a buffer rod, a first driving motor, a first
threaded rod, a fixing plate, a mounting plate, a second driving motor, a second
threaded rod, a sliding rod, a limiting rod, a sliding block, a negative pressure motor, a connecting
pipe, a collecting box, a connecting disc and a conical suction head. Impurities and dust on the lower die plate are automatically cleaned, manual hands do not need to stretch into the die plate for cleaning, cleaning is more convenient and
safer, meanwhile, the position of a suction device can be adjusted, it can be ensured that the distance between a conical suction head and a cleaned object is proper,
suction force is fully utilized, and the cleaning efficiency is improved. And a more comprehensive cleaning effect is achieved.