| 摘要 |
<p>A vertical pipe expander to be used to expand the pipes assembled with fins of finned heat exchangers comprises, on a supporting frame (11), supports (12) for rods (13) of pipe expanding cones (14), performing vertical translational motion and arranged above a seat (18) for a heat exchanger to be subjected to pipe expansion. At least one cone supporting rod magazine (28) is further provided that is arranged vertically with the cones (14) directed downward, for arrangement, during machine setup, at the seat (18), the supports (12) for the rods (13) being constituted by a rod engaging and supporting device (20). The rod engagement and support device is associated with a device (33) for selecting the rods (13) of the magazine (28) to be engaged or released. <IMAGE></p> |
