Supporting frame for unreeling machine

The utility model discloses a support frame for an unreeling machine, which comprises a mounting bottom plate, film rollers with different diameters can be conveniently placed, a second cover plate can slide in a first cover plate by rotating a first locking screw rod, a first spring rod is arranged on the side surface of a first connecting plate, the first connecting plate is connected in a first clamping groove by the first spring rod, and the second cover plate can slide in a second cover plate by rotating a second locking screw rod. A first cover plate and a second cover plate fix the film roller, two sliding rails are fixedly connected to a mounting bottom plate, and sliding blocks slide on the sliding rails, so that a supporting plate can move, the film roller moves, workers can use the film roller conveniently, a first spring rod is compressed by pulling a pull rod, and the film roller is fixed through the first cover plate and the second cover plate. And by means of the elastic force of a second sprin