| 摘要 |
<p>The present invention relates to a bellows forming apparatus and, more specifically, to a bellows forming apparatus to form a corrugated part curved on the outer circumferential surface of a hollow pipe. According to the present invention, the bellows forming apparatus comprises: a base member; a first supporting stand fixated and combined with the upper part of the base member; a second supporting stand fixated and combined with the upper part of the base member separated from the first supporting stand; a guide shaft to connect the first supporting stand and the second supporting stand; a first moving part mounted to be moved along the guide shaft; a second moving part mounted to be moved along the guide shaft, and arranged between the first moving part and the second supporting stand; a first driving part combined with the first supporting stand, and move the first moving part; a second driving part combined with the second supporting stand, and move the second moving part; a first mold mounted on the first moving part where the hollow pipe is arranged inside; a second mold mounted on the second moving part where the hollow pipe penetrated through the first mold is arranged inside; a fluid supply pipe inserted inside the hollow pipe by traversing the second mold, and expand the hollow pipe by supplying a fluid; and a stopper to limit the moving distance of the first and second moving parts.</p> |
