| 摘要 |
The invention provides a siding machine for making metal ending having a formed top edge, a formed bottom edge, and a formed middle portion, from a coll of street met al which feeds between upper and lower rolls. The machine comprises a flat board former section having a fixed portion bottom edge former, a polity of fixed position driven upper and lower drive roll sets for feeding the sheet metal through the machine and an adjustable top edge former. The top edge former is infinitely adjustable from a minimum width closest to the bottom edge former to a maximum with. A transformer section receives a flat formed board from the flat board former section for forming a decorative profile in the middle portion of the board. Transformer rolls are mounted on as an adjustable frame infinitel y adjustable, within pre-set limits, perpendicular to the direction of travel of the board such that the transformer rolls may contact and form the board at a chosen location on its face. An improved motor drive control is also provided that starts the machine gently, reducing jamming and electrical overload, and allows the operating speed to be varied.
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