Verfahren und Vorrichtung zum Durchführen fadenartiger Elemente durch rohrförmige Produkte

摘要

A coil of a tube is formed. The coil is vibrated while a threadlike piece is passed in through the inlet end of the tube so that a given point of the tube reciprocates along a helical path. Provision is made to ensure that inlet end of the tube does not cause a portion of the threadlike piece upstream of and close to that inlet end to move diametrically while being fed into the tube. Provision is also made to form a coil of the threadlike piece, from which the threadlike piece is pull out along the axis of the coil and fed to the inlet end of the tube by conveying force resulting from the vibration of the coil of the tube. A feeder to supply the threadlike piece into the tube may be provided between the inlet end of the tube and a coil feeding device.