Device and method for loosening the drawn stock on the mandrel bar

摘要

The invention relates to a device for loosening the drawn stock on the mandrel bar by means of grooved rollers, the plane of which containing the axes of rotation is perpendicular to the direction of drawing and the distance of which from the drawing axis can be adjusted. In order to provide a device and a method by means of which it is possible to loosen the drawn stock uniformly in the circumferential and longitudinal directions on the mandrel bar or release the drawn stock completely from the mandrel bar while taking up as little space as possible and avoiding visible tracks on the bar, it is proposed that the releasing device have at least one set (1, 1') of three grooved rollers (10, 10', 10'') arranged offset by 120@, the distance of which from the drawing axis (11) can be adjusted hydraulically. IMAGE