Tunnel type core-pulling 50 x 90-degree downstream tee four-cavity pipe fitting mold

The invention relates to the field of pipe fitting molds and discloses a tunnel type core-pulling 50 x 90-degree downstream tee four-cavity pipe fitting mold. The pipe fitting mold comprises an uppercover plate; an injection molding opening is formed in the outer surface of the upper end of the upper cover plate; a fixing ring is arranged on one side of the upper cover plate; auxiliary blocks arearranged at the lower end of the upper cover plate; a limiting plate is arranged at the lower ends of the auxiliary blocks; a bottom plate is arranged at the lower end of the limiting plate; an upperfixing plate is arranged at the lower end of the upper cover plate; a first protection block is arranged on one side of the upper fixing plate; a second protection block is arranged at the front endof the upper cover plate; an injection molding connecting column is arranged in the upper fixing plate; an injection molding pipeline is arranged at the lower end of the injection molding connecting column; and an injection mold