Multifunctional prefabricated pipe chase rotary molding machine

The utility model relates to a multifunctional prefabricated pipe chase rotary molding machine, comprising a frame, a motor arranged on the frame and a transmission belt arranged between the motor shaft and a principal axis. The utility model is characterized in that a mold cylinder is arranged, the principal axis passes through the mold cylinder and bears the load of the mold cylinder, the mold cylinder comprises two semicircles, the inner wall circle of the two ends of the mold cylinder is respectively provided with a plurality of locating studs, support rings are fixed on the inner wall circles of the two ends of the mold cylinder under the orientating function of the locating stud, and one side of the support ring near the center of the mold cylinder is provided with a lug boss. The utility model can be used to produce circular pipes and semi-grooves with rabbets which are convenient to install and seal and have high compactness and good intensity and finish, thereby greatly raising the work efficiency and lowering the cost.