| 摘要 |
<p>The system (10) includes first (110), second and third (130) rollers rotatably contactable with the mandrel (20) and sheet material wound about it. The rollers are arranged about the mandrel axis so that the mandrel and any sheet material wound about the mandrel is supportably captured between the rollers to prevent or at least reduce vibration of the rotatable mandrel. At least the first and second rollers are biassable toward the mandrel with pneumatic pressure from corresponding air over oil cylinders (30), and the first and second rollers are movable away from the mandrel against hydraulic resistance from the corresponding air over oil cylinders to accommodate sheet material wound increasingly about the mandrel. The first and second mandrels may be rotatably coupled to a rotatable turret (40) that alternately positions the mandrels relative to the power driven lay-on roller (130), so that each mandrel has at least one corresponding set of first and second rollers which cooperate with the lay-on roller to prevent vibration of the rotating mandrel.</p> |
