Casing unwinding tension control device

The utility model relates to the field of unwinding devices for casing film production, in particular to a casing unwinding tension control device which comprises a supporting frame, a bearing cross beam, a casing unwinding mechanism and a tension adjusting mechanism, the bottom of the supporting frame is arranged on the working ground, the bearing cross beam is mounted on the supporting frame, and the casing unwinding mechanism is mounted on the bearing cross beam. The bearing cross beam and the supporting frame are fixedly connected into an integrated structure, the casing unwinding mechanism is installed on the upper portion of one side of the bearing cross beam, the casing unwinding mechanism and the bearing cross beam are installed together through a connecting piece, and in the using process, tension control can be conducted on a casing mold through the tension adjusting mechanism when the casing mold is unwound; the tension of the casing mold is stable, uniform and constant in the unwinding operation p