| 摘要 |
A spreader roll for web processing machines used in the paper, textile, and plastic industry. The roll has a stationary shaft on which a roll structure is rotatably mounted. A plurality of rigid cylinder segments form the surface of the roll structure. The cylinder segments are connected to each other movably in relation to each other and to the roll body. The cylinder segments are arranged about, and rotated together with a cylinder sleeve and are connected to each other cicumferentially through rigid retaining rings encircling the roll sleeve. The retaining rings oppose the displacement of the cylinder segments through centrifugal forces acting in the radial direction. The cylinder segments are arranged in parallel rows along the cylinder axis and interconnected to each other within the rows. Annular carriages within the roll structure rotate as integral parts of the roll and at angles to the roll-axis. Thereby, the cylinder segments are caused with each revolution to be progressively elongated and then contracted.
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