Method for cleaning a coupling unit for coupling a component to an article and related machine for coupling

A method for cleaning a coupling unit for coupling a component to an article, said method comprising the steps of:

• providing said coupling unit comprising:
• a housing body comprising at least one seat shaped for accommodating said article,
• a coupling device configured for retaining said component,
• a handling system configured for reciprocally moving said housing body and said coupling device between a first configuration, in which said housing body and said coupling device are mutually spaced apart, and a second configuration, in which said housing body and said coupling device are positioned closely to each other for allowing a coupling between said component and said article;
• providing a cleaning system comprising a suction head and at least one emission mouth for emitting pressurized air connected to a compressed air circuit;
• with said housing body in said first configuration, realizing a reciprocal operational configuration between said cleaning system and said coupling unit in which said suction head and said at least one emission mouth are in mutual proximity with said housing body and at an inlet of said seat;
• activating said suction head;
• activating said at least one emission mouth.