Support disc bearing for an open-end spinning device
View Patent ↗A rotor bearing comprising at least one support disc pair, which is comprised of two support discs ( 40, 41, 42, 43 ), which are arranged in such a way that they form a wedge gap, and a spinning rotor ( 3 ) with a rotor shaft ( 4 ), which is mounted in the wedge gap. The invention is to provide a support disc bearing that is easy to produce. For this purpose, a rolling bearing ( 45 ) is arranged in the base body ( 44 ) of the support discs ( 40, 41, 42, 43 ) and the rolling bearings ( 45 ) are in each case applied on a fixed bearing bolt ( 50, 51, 52, 53 ). The invention furthermore relates to the support disc ( 40, 41, 42, 43 ) and a method for producing the support disc ( 40, 41, 42, 43 ).
1. An open-end spinning device ( 1 ), comprising a rotor housing, two pairs of support discs mounted to the rotor housing, the support discs ( 40 , 41 , 42 , 43 , 47 , 48 ) being arranged in such a way that they form a wedge gap, and a spinning rotor ( 3 ) with a rotor shaft ( 4 ), the rotor shaft being mounted in the wedge gap, each of the support discs ( 40 , 41 , 42 , 43 , 47 , 48 ) comprising an annular outer base body ( 44 , 54 ), characterised in that a respective rolling bearing ( 45 , 49 , 49 A, 49 B) is arranged centrally within each of the base bodies ( 44 , 54 ) for rotation of each base body about the respective rolling bearing, the rotor bearing having bearing bolts ( 50 , 51 , 52 , 53 ) fixed stationarily and non-rotatively to the rotor housing and each of the rolling bearings ( 45 , 49 , 49 A, 49 B) being fixed on a respective bearing bolt ( 50 , 51 , 52 , 53 ).
2. An open-end spinning device according to claim 1 , characterised in that the rolling bearings ( 45 , 49 , 49 A, 49 B) are connected to the bearing bolts ( 50 , 51 , 52 , 53 ) by a press fit.
3. An open-end spinning device according to claim 1 , characterised in that a running coating ( 46 , 55 ) is provided on the outer periphery of the base body ( 44 , 54 ).
4. An open-end spinning device according to claim 3 , characterised in that the base body ( 44 ) of the support disc ( 40 , 41 , 42 , 43 ) is comprised of plastics material.
5. An open-end spinning device according to claim 4 , characterised in that the base body ( 44 ) is produced by means of injection molding.
6. An open-end spinning device according to claim 5 , characterised in that the rolling bearing ( 45 ) is embedded in the base body ( 44 ) and is fitted in by means of the shrinkage occurring during the injection molding.
7. An open-end spinning device according to claim 6 , characterised in that the base body ( 44 ) surrounds the outer periphery of the rolling bearing ( 45 ) in the radial direction.
8. An open-end spinning device according to claim 4 , characterised in that a the base body ( 44 ) comprised of a first plastics material and the running coating ( 46 ) comprised of a second plastics material.
9. An open-end spinning device according to claim 3 , characterised in that the support disc ( 47 , 48 ) comprises a base body ( 54 ) made of metal.
10. An open-end spinning device according to claim 9 , characterised in that the support disc ( 47 , 48 ) comprises a base body ( 44 ) made of aluminium.
11. An open-end spinning device according to claim 9 , characterised in that the rolling bearing ( 49 , 49 A, 49 B) is connected to the base body ( 54 ) by means of a press fit.
12. An open-end spinning device according to claim 9 , characterised in that the rolling bearing ( 49 , 49 A, 49 B) is connected to the base body ( 54 ) by flanging.
13. An open-end spinning device according to claim 3 , characterised in that the rolling bearing ( 45 , 49 , 49 A, 49 B) is connected to the base body ( 44 , 54 ) by gluing.
14. An open-end spinning device according to claim 3 , characterised in that the rolling bearing is configured as a ball bearing ( 45 , 49 , 49 A, 49 B).