The invention relates to the technical field of masks, and discloses a mold gap treatment device during
mask injection molding. The mold gap treatment device comprises an upper mold and a lower mold,a magnetic block is fixedly connected to the interior of the upper mold, a limiting groove is formed in the upper mold, a
dielectric plate is movably connected to the interior of the limiting groove,the bottom of the
dielectric plate is movably connected with a connecting spring, and the bottom of the connecting spring is movably connected with a protrusion. According to the mold gap treatment device for
mask injection molding, when the
dielectric plate moves upwards, current is generated between a positive plate and a negative plate, an
electromagnet is powered on to attract the magnetic block, the upper mold and the lower mold are attracted, and at the moment, an injection molding solution is poured from an injection molding opening and formed in the upper mold and the lower mold, and when the injection molding solution flows into a bottom cavity, current is generated at the two ends of a
semiconductor chilling plate, a
magneto-rheological body is changed into a
solid state from a
liquid state, the upper mold and the lower mold are completely buckled without gaps, the
mask manufacturing percent of pass is increased, and the injection molding cost is reduced.