Feeding device for corrugating machine

The feeding device for the corrugating machine comprises a machine frame, a supporting mechanism and a lifting mechanism, the machine frame comprises a frame body, a lifting base connected with the frame body in a sliding mode and a power assembly driving the lifting base to ascend and descend; the supporting mechanism is arranged on the lifting seat and comprises a supporting seat and a first air cylinder, the supporting seat is in sliding connection with the lifting seat, the supporting seat is provided with a supporting hole, the axis of the supporting hole is parallel to the axis of the material roller, the supporting hole is used for supporting the material roller, and the first air cylinder is used for driving the supporting seat to get close to and get away from the material roller in the axial direction of the supporting hole; the lifting mechanism is arranged on the lifting base and comprises a bracket connected with the lifting base in an up-down sliding mode and a second air cylinder driving the br