Open-end spinning device

#The present invention relates generally to an open-end spinning device with a spinning rotor which is supported by means of its rotor shaft in the bearing wedge of a supporting plate bearing, and more particularly to a rotor brake for such an open-end spinning device having a brake element which rests on the rotor shaft from above in the braking position to be applied to the rotor shaft.

#Such open-end spinning devices are, for example, known from German Patent Publication DE 25 55 059 C2, which discloses a typical open-end spinning unit with a rotor revolving in a rotor housing to which the present invention is applicable. The rotor housing is closed by means of a cover forming a part of a spinning box housing assembly which can be pivoted downward around a pivot shaft for exposing the spinning rotor. In the closed position, i.e. during the spinning process, this housing element is secured by a locking lever.

#In this device, the locking lever has a guide surface which is almost concentric in respect to the pivot axis of the housing element and against which a locking roller disposed on the housing element rolls when the housing assembly is pivoted out of its operating position into an unlocking position. In the process, the locking roller maintains the locking lever in the unlocked position, as well as keeping a braking device in a braking position.

#FIG. 1 is a side elevational view of a supporting plate bearing of an open-end rotor spinning device with a switchable rotor brake in accordance with a preferred embodiment of the present invention,

#FIG. 2 is a cross-sectional view of the supporting plate bearing in accordance with FIG. 1, taken along section line II--II thereof,

#FIG. 3 is another cross-sectional view of the supporting plate bearing in accordance with FIG. 1, taken along section line III--III thereof.

#Referring now to the accompanying drawings and initially to FIG. 1, a known form of supporting plate bearing assembly is identified generally at 5 in an open-end rotor spinning device, identified as a whole by 1. As usual, the spinning rotor 2 is supported by its rotor shaft 3 in the bearing wedges 4, 4' formed between two spaced pairs of supporting plates 6, 6' of the supporting plate bearing assembly 5. For the sake of clarity, FIG. 1 only shows one pair 6 of supporting plates.

#FIG. 2 shows the two pairs 6 and 6' of supporting plates respectively positioned with their bearing bodies 7, 7' in receptacles 8, 8' of a bearing bracket 9, and fixed in place in such disposition by fastening means (not represented).

#As shown in FIG. 1, the rotor shaft 4 is supported at its end in an axial bearing 10. The drive of the open-end rotor spinning device 1 takes place via a tangential belt 11 acting on the rotor shaft 3.