| 摘要 |
A paper/carton (9) machine (1) is driven by an endless metal belt (6) running through the nip zones (N) between a series of rollers (2) with counter-rollers (3) and a regulator drum. In a process to regulate the transverse position of the metal belt (6), the belt is guided esp. by regulation of the transverse tension between the two outer margins (6a, 6b) as caused by opposing regulator cylinders (14, 15). In addition, a third cylinder (16) acts in either direction on the belt (6) first margin (6a) to regulate the difference between the first two cylinders (14, 15). The transverse position of the endless belt is detected by a sensor (17) linked to the third cylinder (16). The cylinders (14, 15, 16) are hydraulic or pneumatic. Also claimed is a commensurate assembly in which the proportional pressure (f1) exerted by the first cylinder (14) is pref. 5% less than that (f2) exerted by the second cylinder (15). The third cylinder (16) exerts a force (f3) which is pref. no more than 50% of its maximum rating.
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