| 摘要 |
PURPOSE: A manufacturing device for a straight pipe and a corrugated tube is provided to selectively manufacture the straight pipe and the corrugated tube without changing a mold. CONSTITUTION: A manufacturing device for a straight pipe and a corrugated tube comprises a body(11), a hollow shaft(21), straight pipe and corrugated tube molds(31,41), a vacuum pump(51), and an air pump(61). The body has a discharge port(14) and a resin path(12). The straight pipe mold has a plurality of first through-holes(31a). The corrugated tube mold accepts the straight pipe mold and maintains a uniform interval with the outer side of the straight pipe mold. The corrugated tube mold has a spiral wave pattern and a plurality of second through holes(41a) of helix upon the inner side. Resin adheres closely to the outside of the straight pipe mold or the inside surface of the corrugated tube mold. The vacuum pump selectively sanctions the vacuum pressure outside inside or the corrugated tube mold of the straight pipe mold. The air pump presses the inside of the straight pipe in order to position the resin close to the inside of the corrugated tube mold.
|
