| 摘要 |
A calender device for the surface treatment of material moved between peripherally coacting roller and counter roller surfaces exerting a pressure onto one another during relative rotation under the action of magnetic forces. The device comprises at least two rollers of magnetizable material spaced apart and coacting peripherally with at least two other counter rollers usually having non-magnetic peripheries, and with a magnet body interposed generally between the first-mentioned rollers so as to exert a magnetic attractive force thereon such that regardless of the form and number of rollers opposite components of the magnetic attractive force between the magnet body and rollers of magnetizable material lie in intersecting planes connecting the respective axes of the counter rollers and the axis of the roller of magnetizable material which they adjoin. The counter rollers are disposed parallel to and are equally spaced at opposite sides of the magnet body and at least one of the rollers of magnetizable material, and in another embodiment from both of said rollers. Further forms embody respectively three and four of the rollers of magnetizable material arranged peripherially in a spaced apart manner alternately engaging with interposed counter rollers and having a centrally disposed non-rotatable magnet body with a plurality of opposite polarity pole faces corresponding in number to and disposed adjacent the first-mentioned rollers, and the rollers therearound form a static closed system in which the rollers and magnet longitudinal bodies are not subjected to longitudinal deflection in most forms, and in others only to minimal deflection during operation. Still further more preferred forms embody circumferentially disposed coacting rollers and counter rollers disposed concentrically around a central roller with which only the counter rollers also peripherally coact during relative rotation of the rollers, and with said counter rollers usually being mounted at a uniform diameter form the axis of the center roller which diameter is less than that of the other rollers. The magnet body in one of these latter forms includes having the form of separate magnet bars interposed radially between the center roller and the rollers of magnetizable material and extending longitudinally over the length of the rollers. Another form has the magnet bodies in the form of a plurality of opposite polarity pole faces integrally disposed in a circumferentially spaced manner around the periphery of the central rotatable roller to exert the aforestated magnetic attractive forces sequentially on the encircled rollers thereabout during operation.
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