Ring spinner or twister ring/traveler combination has structured flange surfaces at the ring and the traveler bent into a symmetrical shape to give the yarn passage point and control the projecting fiber ends from the yarn

摘要

The ring/traveler combination, at a ring spinning or twisting machine, has a ring (1) with a flange (2) with an inner main curved surface (3) for the traveler (4) and a flange upper side (5). The upper side is angled radially inwards as a fiber guide surface (6), to lead the yarn (7) with projecting fiber ends (8) against centrifugal forces (9) in a forced descent towards the main surface. At the ring/traveler combination, the main surface of the ring has an inwards convex curvature towards the ring axis. The traveler has a yarn passage point (14), which is vertically over the upper end (13) of the main surface. The descent is formed in the gap (11) between the main surface and the traveler. The yarn passage at the traveler can be on the tangent surface (16) of the main surface, coaxial to the ring axis. The fiber guide surface has a cone or funnel shape, tapering downwards with an angle of 20-80 deg and preferably 35-65 deg . The fiber guide surface can be straight, convex or concave as seen on an axial ring cross section. The traveler is bent into a symmetrical shape, with at least one kink with a rounded section (17) as the yarn passage point to hold the running yarn. Under operating conditions, the yarn passage point is at the level of the upper edge (13) of the main guide surface. The radial width of the angled fiber guide surface is 4 to 3 the radial width of the upper flange surface, and especially one-third.