Tangential winder, specifically for the production of regular bobbins and those with a large diameter, small plastic rolls, connected in a line and separated by the tearing zone

摘要

The ribbon (n) on the roll to be wrapped around a core (A) mounted on a motorized spindle (M), is sent on an ample track on the circumference of at least one roll carrier, rubber, parallel to said spindle and rotating at the right speed. The ribbon coming from the supply mechanism that simple keeps it stretched out, and is kept in close contact on the roll carrier, by a parallel pressure roller (228) and from the bobbin core first and then from the bobbin. Separate from the spindle it is made turn on the roller carrier, electronically controlled by a motor with a furnished pair. Mechanisms (243-244-245) are provided to automatically modify the pair of motor and spindle. It can adjust the diameter of the bobbin formed on this in order to make the ribbon on the roll in the wrapping phase is subjected to a longitudinal tension with a constant and appropriate value. There are also mechanisms (241-242) provide to push the bobbin onto the correct roller carrier. The ribbon is subject to an adapted longitudinal tension, for the formation of a compact bobbin, when it is controlled by the roller carrier and by the same bobbin, as such not by the ordinary folds and deformations.