Roller marking device of labeling machine

The invention relates to a roller labeling device of a labeling machine, comprising a larger roller and a pushing plate. The pushing plate is located opposite to the working surface of the roller. The outer surface of the roller is a flexible material layer. The pushing plate is Soft elastic deformation body, between the push plate and the roller, there is a certain space for the square bottle to enter and rotate. The push plate adopts an elastic belt that is placed in an open position and has a rectangular strip shape. A vacuum belt guide mechanism is provided at the inlet of the roller. With a single labeling head, labeling can be done on the four sides of a square bottle, with a simple structure, reliable operation, high labeling quality and durability.