| 摘要 |
PURPOSE: A method and an apparatus are provided to manufacture the support pipe promptly and easily by pressing thus bending the joint part of a bended pipe in a curved surface shape, welding the joint part of the pipe and separating thus discharging the support pipe manufactured in bending a support pipe such as lamp post and signal lamp post. CONSTITUTION: The method for manufacturing a support pipe comprises first bending process of bending a plate material in a semicircular shape; second bending process of bending the semicircular artifact in a tube shape by pressing both sides of a semicircular artifact formed through the first bending process around a stay core body(21); third bending process of pressing thus bending the joint part in such a manner that the surface of a joint part of the artifact bended in a tube shape through the second bending process is curved; welding process of fusing the joint part of the artifact through the third bending process; cooling process of cooling the welding portion that is welded through the welding process; and separation and discharging process of separating the artifact from the stay core body(21) by pushing the front end of the support pipe after spacing the artifact cooled through the cooling process apart from a bending die(10), and discharging the support pipe(2) by inserting the support pipe(2) separated from the stay core body(21) into a discharge clamp(91).
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