Preassembled insert and liquid silica gel injection molding production line

The utility model relates to the technical field of liquid silica gel injection molding, in particular to a preassembled insert and a liquid silica gel injection molding production line, a plurality of protruding positioning parts are arranged on a bottom plate, and positioning holes corresponding to the positioning parts are formed in a middle carrier plate and a top plate and used for enabling the bottom plate, the middle carrier plate and the top plate to be sequentially connected in a matched mode. A plurality of containing cavities used for containing products are correspondingly formed in the bottom plate and the middle carrier plate, sealing rings are arranged at the upper ends of the containing cavities in the middle carrier plate, a cover plate is arranged on the upper side of themiddle carrier plate, and open holes are formed in the positions, corresponding to the containing cavities, of the cover plate. According to the utility model, the preassembled insert is arranged andthe conveyer belt, the ma