Fabricated precast beam mold

The utility model discloses an assembly type precast beam mold, and relates to a precast beam mold. The prefabricated beam pouring device comprises a bottom plate, and two parallel side plates are vertically arranged on the bottom plate; plugging mechanisms are arranged at the front ends and the rear ends of the two side plates correspondingly, each plugging mechanism comprises plugging plates perpendicularly arranged at the two ends of the sides, close to each other, of the two side plates, and the two plugging plates, the bottom plate and the two side plates jointly form a pouring cavity; a plurality of long-strip-shaped grooves which extend in the height direction of the plugging plate and are used for allowing steel bars to stretch out are formed in the side, away from the bottom plate, of the plugging plate. The plugging mechanism further comprises a sliding plate arranged on the two side plates in a lifting mode and a fixing piece used for fixing the sliding plate, a plurality of first clamping strips m