APPARATUS FOR ADJUSTING THE CENTER DISTANCE BETWEEN BEARING SUPPORT MEMBERS

摘要

An apparatus for increasing or decreasing the center distance between bearing support members. The bearing support members may comprise blocks suitably spaced and supported so that at least one member of the pair is slidably disposed, there being a spacing member interposed between the bearing blocks. A jack member is provided to exert a substantial static clamping force on the assembled elements. The spacing member is made of a thermally expansible or contractable material and preferably has an electric heater embedded therein. Control means are provided to energize or de-energize the heater thereby causing expansion or contraction of the spacing member to change the spacing between the bearing blocks. In a preferred use, the apparatus controls the nip distance between a pair of co-acting sheeting rolls.