| 摘要 |
A machine (90) for forming a metal roof panel (50) of indeterminate length from a uniform width supply strip (96) of sheet metal having a pair of parallel straight longitudinal edges (98, 100). The machine (90) has a serie s of spaced forming stations (102) each having upper and lower shaping rollers between which the sheet metal strip (96) is passed so as to impart a desired shape to the sheet metal strip (96) which is uniform along the length of she et metal strip (96) after it exits the apparatus. A stamping station (104) located in the path of the sheet metal strip (96) before the series of space d forming stations (102) is effective to form linear impressions (74) in the sheet metal strip (96). The linear impressions (74) are transverse to the longitudinal edges (98, 100) of the sheet metal strip (96), with each such impression (74) having its lateral extent limited such that the succeeding series of shaping rollers do not impinge thereon.
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