| 摘要 |
PURPOSE:To provide an apparatus for manufacturing a corrugated tube which has high durability including impact resistance, pressure resistance, etc., and which causes no longitudinal wrincle between a crest part and a root part of the corrugate tube manufactured and no strain inside the tube. CONSTITUTION:A plurality of rollers 3 are disposed rotatably along an imaginary circumference between a support frame 2 and a support plate 4 facing each other and thereby a rotating axis body being one substantially is formed. A plurality of corrugated rings 12 each having a section shaped in a projecting thread are disposed on the peripheral surface of the roller 3 and a helical shape is formed as a whole. An extruder 24 extruding a molten synthetic resin strip is disposed in the vicinity of the support frame 2. Follower trunk rings 9 are disposed on the outer periphery of the roller 3 between the corrugated rings 12. |
