| 摘要 |
Feeding device with motorized rollers for overlying bands (1 and 2) of paper or other material, having different lengths and bound in a transversal direction between them, constituted of a driving roller (R1) and of a rubber-covered pressure roller (R2) where the driving roller (R1) is activated by a first brushless motor (M1) and that the pressure roller (R2) is activated by a second brushless motor (M2) and where said feeding device is controlled by an electronic driving means that allows the pressure roller (R2) to rotate to a greater speed than the driving roller (R1) on the base of what is allowed by the bands of overlying material (1 and 2), allowing the sliding of the overlapping band (2) above the base band (1) during feed motion, maintaining constant the requested tension and eliminating the rolling up of the overlaying band/s in correspondence of the transversal bind with the base band.
|
