DE1035025B - Detachable coupling for the jacket shells of top rollers on spinning machine drafting systems - Google Patents

Description

GERMAN

The invention relates to a releasable coupling for 6 mm sleeves of top rollers on spinning machine drafting systems according to patent 1 011 788, in which the jacket sleeve on the outer ring of a roller bearing in axial direction is held by at least one radially yielding part, with one on the jacket sleeve seated:, partially radially flexible and provided with axial notches coupling ring, the engages with its annular bead in a corresponding groove in the bearing outer ring.

The measure of the main patent creates a particularly useful connection of the jacket sleeve has been created with the bearing outer ring, which involves pulling off and attaching the jacket sleeve the bearing outer ring allowed in a simple manner. Because of what occurs in spinning machines However, a special sealing of the roller bearings to the outside is necessary so that there is no fiber fly can penetrate the interior of the warehouse.

There are already seals for top rollers in the drafting system known, in which on the ends of the upper roller axis lying within the jacket sleeve limiting rings for the roller bearings with one on their Radial groove arranged on the outer circumference are provided, with a sealing ring in the groove engages, which in turn enters a recess in the jacket sleeve. This arrangement is expensive in production and causes relatively strong friction while the top rollers are running, which exerts an undesirable braking force. In addition, there is a risk that between the Upper roller axis applied, the sealing ring receiving the limiting ring and the jacket sleeve remaining · gap fiber flight penetrates, which affects the running properties also adversely affected and makes frequent cleaning of the top rollers necessary.

In another embodiment that has become known, a sealing flange is provided which is radially resilient sections rests against the inside of the jacket sleeve. This arrangement allows a good seal of the individual bearings, but it is disadvantageous insofar as the sealing flange o when pulling the jacket sleeve from the upper roller axis or the bearing outer ring also from the Jacket sleeve must be pulled off.

The invention is based on the object of a To create a seal, which prevents the ingress of fluff into the bearing interior without undesired Reliably avoids braking effect and in which there are no special parts that are required when pulling off the jacket sleeve must be removed separately from the bearing outer ring. This goal has been achieved accordingly the invention essentially characterized in that the coupling ring except its the jacket sleeve with the Detachable coupling

for the casing sleeves of top rollers
on spinning machine drafting systems

Addendum to patent 1,011,788

Applicant:

SKF ball bearing factories

Company with limited liability,

Schweinfurt

Walter Sommer, Leonberg (Württ),

and Theo Wiendl, Stuttgart-Zuffenhausen,

have been named as inventors

Beading connecting the outer ring of the bearing still moves in the direction of a stationary part, e.g. B. on the axis or on a sleeve firmly connected to it has tapering projection that the the stationary part is resiliently touched and the ball bearing seals against flying fibers. In this way the coupling ring is used as a sealing ring at the same time, the coupling ring in cross section expediently has the shape of a Y and the flange of the coupling ring held on the jacket sleeve is clamped in a known manner by spring rings on the jacket sleeve and that resilient engagement of the annular bead in the groove in the bearing outer ring through known radial incisions is facilitated. The shape of the projection tapering towards the stationary part can thereby be chosen differently; however, it is advisable to train this so that it is the stationary part only linearly resiliently touched, so that practically no friction occurs, which affects the running properties the jacket sleeve hindered.

An example of the subject matter of the invention is shown in the drawing. It shows

Fig. 1 shows a top roller, partially in section, with coupling ring and

Fig. 2 shows the coupling ring in view.

1 shows a roller body of a twin roller pair rotating on a stationary axle 1. The axis 1 is fastened in a middle piece 2. In the axis 1, annular grooves 3 and 4 are

809 578/279

rotated, in which rows of balls 5 and 6 rotate. There is one between the rows of balls 5 and 6 Spacer sleeve 7, which is also used to axially guide the bearing outer ring 8, which is supported by a spring ring 9 is held to her.

At the other end of the stationary axle 1, a piece ending in a bearing journal 10 for the lateral guidance of the axle 1 is firmly pressed on. The jacket sleeve 12 carrying the jacket 11 is pushed onto the bearing outer ring 8. The jacket sleeve 12 is held by a known coupling ring 13 on the bearing outer ring 8 in the axial direction. The coupling ring 13 has an outwardly projecting flange 14 which is clamped between spring washers 15 and 16 on the roller body 12. At the opposite end of the coupling ring 13 there is provided an annular bead 17 which is known per se and which is provided with axial incisions 18 in a known manner. When the jacket sleeve 12 is pushed onto the bearing outer ring 8, the annular bead 17 engages in a corresponding groove 19 in the bearing outer ring 8. According to the invention, the coupling ring 13 also has a third leg 20 which tapers towards the bearing pin 10 and touches it in a circular manner. The ring 13 is advantageously made of resilient material, e.g. B. od a plastic such as polyamide. Like. Manufactured. The leg 20 according to the invention allows neither grease from the bearing points to penetrate to the outside nor fluff or debris to penetrate to the inside. According to the invention, the coupling ring 13 also serves as a sealing ring and makes it unnecessary to attach a special sealing ring, which was previously necessary. The coupling ring 13 has three legs, one leg (flange) 14 with which it is clamped to the jacket sleeve, a second * resilient leg which ends in a bead ring 17 and engages in a groove 19 of the bearing outer ring, and according to the invention a third leg 20, which rests on the axis 1 or on a part connected to it in a sealing manner against fluff and oil. All three legs together form the cross section of the coupling ring and are arranged roughly in the manner of a large lying Y.

Claims (2)

Claims 1. Detachable coupling for the casing sleeves of top rollers on spinning machines drafting systems, at which the jacket sleeve on the outer ring of a roller bearing in the axial direction by at least a radially flexible part is held, with a partially seated on the jacket sleeve radially flexible and provided with axial cuts. Coupling ring with its annular bead engages in a corresponding groove in the bearing outer ring, according to Patent 1 011 788, characterized in that that the coupling ring (13) also has a moving in the direction of a stationary Part, e.g. B. on the axis or on a sleeve (10) firmly connected to it tapering Has projection (20) which resiliently touches the stationary part (10) and the ball bearing (3) seals against fiber fly. 2. Detachable coupling according to spoke 1, characterized in that the same as a seal serving coupling ring (13) has the shape of a Y in cross section and that the one on the jacket sleeve (12) held flange (14) of the coupling ring (13) in a known manner Spring washers (15 and 16) are clamped to the jacket sleeve (12) and that the resilient snap into place of the annular bead (17) into the groove (19) in the bearing outer ring (8) in a manner known per se axial incisions (18) is facilitated. Considered publications:
German Patent No. 867 069;
Swiss patent specification No. 295 622. 1 sheet of drawings © 809 578/279 7.58