Automatic film winding packaging machine for cartons

The utility model relates to the technical field of packaging equipment, in particular to an automatic film winding packaging machine for cartons. According to the technical scheme, the device comprises a bottom plate, a sliding block and a plastic film roll, a base is fixed to one end of the upper end face of the bottom plate, a rotating disc is rotationally installed at the upper end of the base, a side column is fixed to the end, away from the base, of the upper end face of the bottom plate, a supporting rod is fixed to the upper end of the inner side of the side column, and a groove is formed in the middle of the inner side of the side column; the sliding block is slidably installed in the groove, a storage groove is formed in the middle of the outer side of the sliding block, a top box and a limiting column are fixed to the upper end and the lower end of the interior of the storage groove correspondingly, an inserting column is slidably installed in an opening in the lower end of the top box, and the upp