Floating type label feeding device for labeling machine

The utility model belongs to the technical field of labeling machines, and particularly relates to a floating type label feeding device for a labeling machine, which comprises a mounting platform plate, a label output box is fixedly mounted on the top surface of the mounting platform plate, and a protective shell is fixedly mounted on the left side surface of the mounting platform plate. Bottom plate sliding ways are fixedly installed at the left end and the right end of the bottom face of an inner cavity of the label output box, the top face sliding rails of the bottom plate sliding ways are sleeved with a printing mechanism located at the bottom of the inner cavity of the label output box, and a label roller is fixedly installed at the end of an output port of the label output box. Through the arrangement of the air floating mechanism, the label roller, the air floating mechanism and the adsorption grabbing plate are matched with one another, so that labels can suspend when the label roller conveys the prin