Unwinding apparatus for rolls of material
AssigneeJagenberg Werke AG
InventorsKarl Thievessen, Peter Weiss, Herbert Schonmeier
Life of this patent
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Abstract
An unwinding apparatus for rolls of materials pivotably mounts the rolls with a pivot drive at each end of the roll. The torque of each pivot drive is equalized relative to the machine frame in each direction of rotation by providing for each pivot drive, a resiliently mounted lever which is fixed to the pivot drive and a contact member which is linked to the lever. Four switches are arranged in pairs symmetrically with respect to the contact member and are actuated thereby in response to movement of the lever resulting from torquing by the pivot drives.
Claims7
In an unwinding apparatus for rolls of material of the type wherein the rolls are mounted with a pivot drive at each end of the roll with respect to a machine frame, the improvement comprising means for equalizing the torque of each pivot drive relative to the machine frame in each direction of rotation comprising for each pivot drive, a lever connected thereto, means resiliently mounting the lever to the machine frame, a contact member linked to the lever and four switches arranged in pairs symmetrically with respect to the contact member and actuated thereby in response to movement of the lever resulting from torquing by the pivot drives.
Dependencies are inferred from the claim text.