| 摘要 |
PURPOSE: A forming roller of a connection pipe forming apparatus is provided which not only minimizes damage of the formed hole when expanding and stretching a formed hole formed in a main pipe, but also forms the formed hole in an accurate concentric circle. CONSTITUTION: In installing a driving shaft rotated and moved by a driving motor to integrally form a formed pipe from a main pipe according to fabrication of a connection pipe, a forming roller(1) of a connection pipe forming apparatus is characterized in that two pairs of conical rollers(20,20a) are rotationally fixed on a fixed shaft(10) at the end of the driving shaft(112) perpendicularly to each other, wherein length of the one pair of rollers(20) is longer than that of the other pair of rollers(20a), diameter of the one pair of rollers(20a) is larger than that of the other pair of rollers(20), and the fixed shaft(10) of the rollers(20,20a) is attached to or separated from the driving shaft by a fixed jig(30) into which the fixed shaft(10) is inserted thus fixed.
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