COMPLESSO DI SLITTA O SLITTA-PUNZONE,IN PARTICOLARE PER UN APPARECCHIO PER IL FISSAGGIO DI ELEMENTI DI COLLEGAMENTO A FORMA DI DADI SU PANNELLI

摘要

A preceding or forward running former passing through a female fastener element during the attaching operation is proposed for a plunger and/or plunger/punch assembly which ensures that female fastener elements, especially nuts which are preferably of the self-piercing type, can be attached even to relatively thin sheets without any additional waste.