English to Russian Tech/Engineering Printing & Publishing полиграфия folder-gluer

Коллеги, помогите, пожалуйста, правильно перевести название данной секции? (выдвижная секция?)
trombone section

Through this screen you will be able to activate the squaring device placed on the trombone section. This device will correct any defect on the closing of lock-bottom boxes. It is specially useful for corrugated boxes that have the crease over the flute