Adjusting device of doctor blade

The utility model discloses a doctor blade adjusting device which comprises a supporting plate, an adjusting frame, a pivoting assembly and a fixing assembly, an ink collecting assembly is arranged on the supporting plate, the adjusting frame is hinged to the supporting plate, an installation assembly is arranged on the adjusting frame, and the installation assembly is used for assembling a doctor blade. The pivoting assembly comprises a cam arranged on the adjusting frame and a guide wheel arranged on the supporting plate, an edge plate making contact with the guide wheel surrounds the outer wall of the cam, a plurality of side grooves are formed in the edge plate, the cam can pivot to drive the adjusting frame to adjust the hinge angle between the cam and the supporting plate, the fixing assembly comprises a miniature electric cylinder installed on the supporting plate, and a movable rod of the miniature electric cylinder is connected with a movable plate. A raised line is arranged on the moving plate and c