Drawing frame having at least one drawing region for the direct spinning of combed or semi-combed yarn.

摘要

A drawing frame with a drawing region or with two independent drawing regions includes, as a whole, four or more so-called drawing and control rollers. These latter all comprise pressure rollers with barrel rubbers. The control roller situated immediately upstream of the draw-off or "total" drawing roller is arranged in such a position that its periphery is separated from that of the drawing roller by a narrow gap. The ratios between the diameters and the speeds of rotation of these rollers is selected in such a way that the peripheral velocity of the "total" drawing roller is significantly greater than the peripheral velocity of the adjacent control roller. Consequently, an upwardly directed flow of air is created which removes the floating fibres which would otherwise tend to form windings or so-called "rolls".