EXTRUDER NOZZLE DEVICE FOR SYNTHETIC RESIN PIPE BURIED INTO UNDERGROUND

摘要

PURPOSE: An extruder nozzle device is provided to reduce the deformation of an extruding pipe without requiring a separate cooling device by simultaneously cooling the extruding pipe when an extruding process is carried out. CONSTITUTION: A nozzle base(21) of an extruder nozzle device(20) is installed in an extruder body(10). A flange(21a) is formed at a rear end of the nozzle base(21). The flange(21a) is coupled to the extruder body(10) by means of a bolt. An extruding passage(21b) is formed at a central axis of the nozzle base(21). The extruding passage(21b) is communicated with an extruding path(11) of the extruder body(10). The extruding passage(21b) is tapered. A plurality of extruding holes(21c) are radially branched from the extruding passage(21b). Ring shaped extruding slots(21c) are connected to the extruding holes(21c).