| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and a method which continuously and easily mold a pipe having such a shape as to be three-dimensionally bent.SOLUTION: In an apparatus and a method for manufacturing a pipe 1 which has a bent portion and is made of a synthetic resin, the apparatus for manufacturing the pipe 1 includes an extruder 10 for extruding the pipe to the upper part, and roller units 20 and 30 which send the pipe 1 to the lower part of the extruder 10 while holding the pipe 1. The roller units 20 and 30 are mounted so as to surround a center part for making a plurality of rollers 21 and 31 hold the pipe 1 extruded in the center part. The plurality of rollers 20 and 30 can be controllably provided so that their rotation numbers are different from one another.SELECTED DRAWING: Figure 1 |
