Injection mold for plastic barrel

The utility model discloses an injection mold for a plastic barrel, which comprises a mold assembly consisting of a mold bottom plate, a first mold plate, a second mold plate, a third mold plate and a mold top plate, and further comprises an alignment mechanism for aligning the first mold plate and the second mold plate; four protruding blocks are arranged on the outer wall of the top of the first mold plate, adaptive grooves are formed in the outer walls of the two sides of each protruding block, adaptive plates are arranged on the inner walls of the bottoms of the adaptive grooves, and reset springs distributed at equal intervals are connected between the adaptive plates and the adaptive grooves. The injection mold for the plastic barrel disclosed by the utility model has the technical effects that the adapter plate is in contact with the second mold plate to close the first mold plate, so that collision and extrusion are avoided, abrasion cannot be caused in a long-term mold closing process, and the inject