Automatic winding device for green digital printing

The utility model discloses an automatic winding device for green digital printing, and relates to the technical field of printing. The device comprises a bottom plate, locking assemblies are arranged on the left side and the right side of a reel above the bottom plate, each locking assembly comprises a hydraulic cylinder and a cross-shaped block, the inner side of each hydraulic cylinder is connected with the corresponding cross-shaped block, the cross-shaped blocks are connected with cross-shaped hollow shafts on the left side and the right side of the reel in an inserted mode, and a limiting assembly is arranged on each hydraulic cylinder and comprises a nut, an external thread shaft, a connecting base and a baffle. A baffle and a connecting base are connected to one side of the hydraulic cylinder from inside to outside, external threaded shafts are distributed on the outer side of the baffle in a rectangular array mode and penetrate through the connecting base, and the inner sides of threaded connection n