| 摘要 |
The present invention relates to an unevenness connecting type double-walled sewer molding device to improve hardness and cohesion and, more specifically, relates to a double-walled sewer molding device, wherein after extruding a profile (21) from a second extruder (20) to be cooled, the profile is spirally supplied to a pipe manufacturing device (10) having a drum (24) and a roller (23) at an outer diameter of a guide roller (25), and a triple wall sewer (35) is formed by supplying a molten resin to a gap of the profile (21) with a connection member (32). The present invention is to stably couple a profile and a reinforced connection member by coupling a coupling uneven groove of the profile and a coupling protrusion of the reinforced connection member to be equal while having an uneven shape. |
