Patent ID: 6052985
Filing Date: 2000-04-25
Classification: D01H

Abstract:
A device for manufacturing a twisted yarn by a combined spinning and twisting process, said device comprising:a stationary protective pot (7) having a central axis;two open end spinning rotors (1, 2) each having a rotor shaft (1.1, 2.2) with a shaft axis;two slide bearings (11, 12) mounted in said protective pot (7), wherein each one of said rotor shafts (1.2, 2.1) is mounted in one of said slide bearings (11, 12);a device for feeding dissolved fiber material to said open end spinning rotors (1, 2), wherein the fiber material is spun by said open end spinning rotors to form spun yarns;a hollow spindle axle (5) extending centrally through said protective pot (7) on said central axis;said hollow spindle axle (5) having an upper end and a lower end;a radially extending yarn guide channel (6) communicating with said lower end of said hollow spindle axle (5) and rotatably driven about said central axis;said yarn guide channel (6) having an outlet external to said protective pot (7), wherein spun yarns produced by said two open end spinning rotors (1, 2) are introduced into said upper end of said hollow spindle axle (5) and exit as a twisted yarn from said outlet of said yarn guide channel (6);a centering point (Z) located above said hollow spindle axle (5);a winding device (B) mounted external to said protective pot (7), wherein the twisted yarn is removed from said outlet of said yarn guide channel (6) in a direction opposite to the direction of feeding through said hollow spindle axle (5) to said centering point (Z);an electric motor (M) having a drive member (13) resting at said rotor shafts (1.1, 1.2);a pair of guide rollers (14a, 14b; 15a, 15b) for each one of said rotor shafts (1.1, 2.1), wherein each one of said pairs of guide rollers (14a, 14b, 15a, 15b) forms a wedge-shaped gap in which said rotor shaft (1.2, 2.1) rests, respectively;wherein each one of said pairs of guide rollers (14a, 14b, 15a, 15b) is arranged relative to said motor (M) such that in a view from said centering point (Z) onto said protective pot (7) rotational axes of each one of said pair of guide rollers and said motor define corners of an isosceles triangle, wherein said triangle has a bisecting line intercepting the rotational axis of said motor and a center plane of said wedge-shaped gap.