Rotating leno selvage device with direct electromagnetic drive having axial magnetic flux

Abstract

A rotating leno forming device includes a leno disk (3) that has leno thread guides (5) therein and that itself forms a part of the rotor (2) of an electromagnetic drive arrangement. In order to achieve a very compact structure, the components are so arranged to achieve an axially directed magnetic flux between the rotor (2) and an electromagnetic stator (10) arranged in the housing (8). A rolling contact bearing rotatably supports the leno disk (3), with a first bearing race (6A) connected to the housing (8) and a second bearing race (6B) connected to the leno disk (3). Permanent magnets (7) are arranged on an annular ring surface (3A) of the leno disk (3) extending along a radial plane, so as to face the electromagnetic stator (10) across an air gap (11) that extends on a radial plane. The thread guides (5) in the leno disk (3) face the stator (10) so that the leno threads (13A, 14A) constantly move through the air gap (11) preventing the accumulation of lint or fibers therein, during operation of the device. An iron yoke ring (3B) may be arranged to rotate with the leno disk (3) or to remain stationary with the stator (10), so as to provide a magnetic return or back circuit.

Dependencies are inferred from the claim text.