This utility model discloses a semi-automatic mold opening and closing mechanism for automotive rubber strips, relating to the field of automotive rubber strip molding technology. It includes a fixed plate and a lower mold plate. An upper mold plate is fixedly connected to the bottom of the fixed plate. The lower mold plate is provided with left-right guide components and front-back guide components. The left-right guide components include two pairs of rectangular cavities symmetrically opened on the front and rear sides of the lower mold plate. Two pairs of mounting blocks are symmetrically fixedly connected to the two pairs of rectangular cavities by bolts. Two pairs of mounting cavities are symmetrically opened on the top surfaces of the two pairs of mounting blocks. Two first limiting plates are symmetrically connected to the mounting cavities. The left-right guide components and front-back guide components can guide and limit the upper mold plate in the front-back and left-right directions during mold closing, thereby enabling precise mold closing between the upper and lower mold plates. This effectively improves the dimensional accuracy and quality of the molded automotive rubber strip, and thus effectively improves the reliability and practicality of the opening and closing mechanism.
