Labeling machine

A labeling machine comprising a conveyor of containers to be labeled along an advancement path and at least one labeling station, which is arranged along said advancement path and has an unreeling assembly for a label ribbon and a cutting drum, which is designed to receive, so that said label ribbon adheres to a lateral surface thereof, said label ribbon and which supports at least one cutting device for said label ribbon, said at least one cutting device comprising a respective suction chamber, which is open at the lateral surface of said cutting drum and accommodates internally at least one blade, said suction chamber being connectable with air suction means, in order to attract said label ribbon toward an inside of said suction chamber and against said blade and in so doing cutting said label ribbon, wherein said at least one cutting device comprises at least one respective blade supporting block which is supported by said cutting drum and supports said at least one blade, at least one portion of said blade supporting block being provided internally with at least one cavity for attenuating noise generated by cutting said label ribbon.