Coupling system for glue hoses and method for operating a gluing machine

A method for operating a gluing machine (70), comprising:

• providing a gluing device (72) having at least one glue hose (15, 15′);
• providing a coupling system (1), having a housing (40), in which at least one coupling piece (6, 6′) is located, wherein the coupling system (1) is attached to the at least one glue hose (15, 15′);
• providing at least several different glue application format parts (74, 76), each of which has a further hose connection (5, 5′) having a corresponding mating coupling piece (8, 8′);
• selecting a particular glue application format part (74, 76) from the several different glue application format parts (74, 76), and
• selectively and detachably coupling the coupling piece (6, 6′) to the mating coupling piece (8, 8′) of the further hose connection (5, 5′) of the selected glue application format part (74, 76), which is accompanied by a fluid connection being formed between the corresponding glue hose (15, 15′) of the gluing device (72) and the corresponding further glue hose (5, 5′) of the corresponding selected glue application format part (74, 76) via the coupling piece (6, 6′) and the mating coupling piece (8, 8′) coupled to the coupling piece (6, 6′).