The invention relates to the technical field of pipeline connection structures and equipment thereof, and relates to a double-wall corrugated 
pipe injection molding flaring 
machine. The double-wall corrugated 
pipe injection molding flaring 
machine comprises a feeding mechanism, a conveying mechanism and an 
extrusion mechanism which are sequentially connected, wherein the 
extrusion mechanism comprises a mold-
locking mechanism which is connected with the conveying mechanism, and a single-screw extruder; after entering the mold-
locking mechanism, a material is extruded by the single-screw extruder; the single-screw extruder is connected with a hydraulic 
station. The double-wall corrugated 
pipe injection molding flaring 
machine adopts the single-screw extruder which is made of 
polyethylene (PE) and is high in efficiency and low in 
power consumption, so that the material amount required by a flaring part of a PE double-wall corrugated pipe is realized at high speed and with high yield, the material is high in plasticizing quality, and the flaring quality is ensured. According to the double-wall corrugated pipe injection molding flaring machine, in an injection molding flaring manner, the defects of the PE double-wall corrugated pipe for flaring in the conventional manner can be overcome, the flaring quality is high, the length of a pipe material is changeable, and the flaring shape can be determined by a customer.