Needling machine for joining fleece layers, comprising two eccenters positioned above each other and to be rotated in opposite directions

摘要

The eccentric drive (11) with an adjustable stroke level comprises an input eccenter fitted with a rotating element with a conical bore parallel to its rotation axis. The output eccenter, equipped with an off-center positioned element and accommodated inside the bore at the rotating element is permanently joined to a pressure disk acting on the eccenter with a spring element. A piston accommodated inside a housing connected to the rotating element serves as a lid of the pressure chamber provided with a duct guiding a hydraulic fluid into the chamber.