SEMI-WORSTED RING SPINNING FRAMES Semi-worsted ring spinning frames from HDB are famous all over the World for their performances and their robustness. Whatever the type of drive, either with a convention mechanical headstock or based on the computer controlled MECATRONIC ® concept, the available range meets all the requirements prevailing in this Industry. The range of available ring diameters is from 75 to 140 mm and the one of the tubes height from 360 to 600 mm.

> UNIVERSAL DRAFTING SYSTEMS

The range of the HDB drafting units covers the processing of all kind of long fibres with the technique of the Super-Draft System.

The classical 4-cylinder unit is improved by a 5th control cylinder in the first drafting zone, when processing fibres with a bias cut.

The quickset device allows an easy setting of the cylinders all along the machine.

The 7-cylinder unit does not incorporate aprons and allows the process of fibres of various lengths with a minimum of settings.

> AUTOMATISMS

Ring spinning frames can be equipped, optionally, with an integrated Copdoffer. The system achieves the doffing of full cops and their replacement by empty tubes. The tubes are supplied from a magazine by a conveyor located at the top part of the machine. Another conveyor transfers the full cops to a collecting carriage or directly to the preparation station of the winder.