DE1016167B - Upper roller axis for spinning machine drafting systems - Google Patents

Description

GERMAN

The invention relates to an upper roller axle for spinning machine drafting systems, the roller body thereof are mounted with the help of roller bearings and in which the gap between axle and roller body or Axle and bearing outer ring is sealed.

There is a gap between the stationary upper roller axis and the roller bodies rotating on it present because the stationary part, e.g. B. the axis, not with the rotating part, e.g. B. the Roller body, should touch. Dust, fluff or other debris can pass through this gap penetrate, so that the bearings get dirty very easily. To prevent this from happening, earlier Executions at the point at which the roller bodies end, this and / or the axle provided with grooves, in which the dirt, fluff or the like should collect. However, it has been found that this is inadequate and the fibers and dirt still get to the bearing.

Attempts have therefore already been made in various ways to seal the gap from the outside. the The best known type is that the axis is rotated from a full piece so that to be sealed Make a flange stop. In these designs, a high loss of material is recorded, in addition, a relatively long working time is required to manufacture such an axis, which is why this becomes too expensive. Attempts have also been made to press a sealing ring onto the axle, but this is only possible with great effort and also too cumbersome.

Another known construction has a flat sealing ring which is axially movable on the Upper roller axis is arranged and counteracted by a further, spring-loaded sealing ring a shoulder provided on the upper roll axis is pressed. In addition to this elaborate construction spring washers arranged in the ring grooves of the top roller axis have become known as sealing rings, which rest with their outer circumference on the inner circumference of the jacket sleeves and thereby a have an adverse abrasive effect.

The invention is based on the object described above Avoid disadvantages and a seal for the bearings of the rotating roller body (Losroller) that is easy to manufacture, saves material and is cheap.

The invention consists in that to seal the gap between the axle and the roller body a known flat sealing ring is used, on the one hand in a manner known per se on one on the axis provided shoulder and on the other hand is held by a collar that is rolled in an annular groove arises in the axle.

Whether erwalzenachs e
for spinning machine drafting systems

Applicant:

SKF Ball Bearing Factory Company
with limited liability, Schweinfurt

Erwin Friedrich Schmid, Kemnat (Kr.Eßlingen),

and Walter Sommer, Leonberg,
have been named as inventors

The invention has the advantage that, as a sealing ring, very thin rings produced by the stamping process can be used, whereas when the rings are pressed on, very strong rings are required would be.

According to the invention is to reduce or seal the gap between the axis and the circumferential Outer ring of the bearing increases the diameter of the axle by displacing material by creating an annular groove is rolled into the axle.

In the drawing, the invention is shown by way of example.

1 with the upper roller axis is designated, which is provided at its ends with ball grooves 2, in which balls 3 are stored, on which the outer ring 4 rotates. The outer ring 4 is means a spring ring 5 held on the intermediate piece 6 so that it is fixed in the axial direction. On the Outer ring 4, the roller body 7 is pushed, which is held in its position by a spring ring 8.

Between the axis 1 and the roller body 7 there is a gap 9 so that these two parts cannot touch each other when rotating. So that no dirt particles and no fluff can penetrate through this gap, the invention provides for this gap 9 to be sealed. This is done in that the axis is turned off a little at the piece marked A , so that a shoulder 10 is formed, which serves as a stop for a sealing ring 11.

The sealing ring 11 is pushed onto the axle, then an annular groove 12 is rolled in, whereby a Bund 13 is created, which holds the sealing ring 11 in place.

As the drawing shows, another annular groove 14 is shown; this has the purpose of the material bring the axis back to its original dimension before turning, so that the gap 15 between

709 697/259

Axis and bearing outer ring 4 is very tight. This creates a double protection against penetration of dirt and fluff.

Claims (2)

PAT-ENTANSPBOGHE: 1. Qberwalzenachse for spinning machine drafting systems, whose roller bodies are mounted with the help of roller bearings and in which the gap between the axle and roller body or between the axle and bearing outer ring is sealed, characterized in that to seal the gap (9) between the axis (1) and roller body (T) a known flat sealing ring (11) is used, which on the one hand rests in a known manner on a shoulder (10) provided on the axle and on the other hand by a collar (13) is held, which is created by rolling an annular groove (12) into the axle (1). 2. Upper roller axle according to claim 1, characterized in that for narrowing the gap (15) between the axis (1) and the circumferential bearing outer ring (4) is the diameter of the axis (1) is enlarged by material displacement by rolling a further annular groove (14) into the axle will. Considered publications:
German Patent No. 908 459;
Swiss Patent No. 239 929;
French Patent No. 1,040,232;
Belgian Patent No. 502,642;
British Patent No. 347,635. 1 sheet of drawings © 709 697/259 9.57