EP1066419B1 - Ring traveller - Google Patents

Abstract

The invention relates to a ring traveller (10, 10') for ring spinners or ring twisters. The inventive ring traveller has a core (7) whose surface has a layer of phosphate (5).

Description

The invention relates to a ring traveler for ring spinning or Ring twisting machines.

Ring travelers of ring spinning and ring twisting machines operated at high speed (30 to 50m / s), with which they are on the rings of the corresponding Move machines. Both the contact area between ring travelers and ring as well as the contact area between ring travelers and thread are subject to high wear. To increase production there are higher running speeds the ring traveler demanded and to reduce costs also a longer service life of the ring travelers.

The object of the present invention is therefore a economically more advantageous ring traveler for ring spinning or To provide ring twisting machines.

This task is solved with a ring traveler, who Features of claim 1.

The ring traveler according to the invention at least points to its Treads that he used when running on a ring a ring spinning or ring twisting machine with the ring in Contact occurs, one made by phosphating Phosphate layer whose thickness is between 0.05 µm and 10 µm, with layer thicknesses below 2 µm to be preferred because their surfaces are usually less Have roughness. The ring traveler can also be complete be covered by the phosphate layer.

An advantage of the ring traveler according to the invention is therein to see that those with a phosphate layer Running surfaces of the ring traveler show little wear have, and the ring traveler on the ring also improved Has sliding properties, resulting in a higher Lifetime of the ring traveler leads and also the use allowed at higher speeds.

Taking into account the special demands, such as wear, high temperatures, compressive and tensile stresses etc., which the ring traveler during operation is used as the base material for the core of the Ring traveler preferably used steel, in particular e.g. high carbon (0.5% - 1.5% C) unalloyed or low-alloy steels. But there are also others Base materials for the core, such as Ceramics or special Plastics conceivable. A very fine crystalline The structure shows a very smooth surface phosphated ring rotors if cores for phosphating the surface is polished.

The phosphate layer applied to the steel core of the ring traveler is preferably an iron, zinc, or Manganese phosphate layer or a compound thereof Alkali or alkaline earth metals, e.g. Lithium, sodium, Potassium, rubidium, cesium, beryllium, magnesium, Calcium, strontium, barium, radium. It must be taken into account that on ferrous base material, such as Steel, usually always some iron phosphate and iron oxides may be present in the phosphate layer can. Phosphate layers that have several layers are advantageous Have cations (such as iron manganese or iron zinc phosphate layers) and their compounds with alkali and Alkaline earth metals, since these are in relation to phosphate layers with only one type of cation in terms of roughness, Wear and sliding properties more advantageous properties exhibit. Iron zinc and zinc phosphate layers combined with alkaline earth metals are particularly advantageous, because of their epitaxial, fine crystalline growth.

Phosphate layers have particularly good properties on by spraying and by diving on the ring traveler are upset. These two manufacturing processes also have the advantage that they have a allow very efficient production of phosphated ring travelers.

Unexpectedly good sliding properties and a low one Wear with very low roughness The surface has finely polished steel ring rotors a zinc calcium phosphate layer applied by dipping shown.

The ring travelers described with a phosphate layer can used both in spinning mills and in twisting mills become. Your good running properties, e.g. good Sliding and less wear and tear are particularly advantageous in cooperation with steel rings, but they can also on other rings, such as on sintered, burnished or coated rings become.

Cotton can be particularly advantageous with the inventive Ring travelers are processed. The one Ring runner provided with phosphate layer comes with an essential less fiber lubrication from what also Lack of lubrication such as in compact spinning, higher Spindle speeds and rotor downtimes allowed. The short ones Cotton fibers have a very positive interaction shown with the phosphate layer of the ring traveler and further improved the sliding properties. fibers, Fiber debris and cotton wax are therefore suitable excellent as fiber lubrication for the invention Ring rotor. But there can also be other fibers, nature or synthetic fibers are processed with the ring traveler, since he also brought in from outside Lubricants (impregnation), e.g. with molybdenum disulfide lubricants, can be used.

Other preferred embodiments and uses are the subject of further dependent claims.

Fig. 1a bis 1f

verschiedene Ausführungsformen von Ringläufern;

Fig. 2a

einen nur im Bereich seiner Laufflächen phosphatierten Ringläufer;

Fig. 2b

einen Schnitt entlang der Linie A-A des in Fig. 2a dargestellten Ringläufers;

Fig. 3a

einen vollständig phosphatierten Ringläufer und

Fig. 3b

einen Schnitt entlang der Linie B-B des in Fig. 3a dargestellten Ringläufers.

The phosphated ring traveler is explained by way of example with reference to FIGS. 1 to 3. It shows purely schematically:

1a to 1f

different embodiments of ring travelers;

Fig. 2a

a ring traveler phosphated only in the area of its running surfaces;

Fig. 2b

a section along the line AA of the ring traveler shown in Fig. 2a;

Fig. 3a

a fully phosphated ring traveler and

Fig. 3b

a section along the line BB of the ring traveler shown in Fig. 3a.

1a and 1b are two C-shaped ring travelers 10 shown how they are typically used on T flange rings become. 1c to 1f, on the other hand, show ear and hook-shaped ring traveler 10 'as e.g. on inclined flange rings be used. With 1 are each Marked areas that the Have treads 1 'of the ring traveler 10, 10'. there can with the C-shaped ring travelers 10 due to their symmetrical design both sides a, b to the tread 1 ', whereas ear or hook-shaped Ring travelers 10 'the area of the tread 1 clearly is determined by the shape. As from these examples can be seen, ring travelers 10, 10 'of the most varied Embodiments and for the most diverse ring shapes suitable to be manufactured as a phosphated ring traveler. In the area of the tread 1, of course, must primarily an inside of the ring traveler designated 3 10, 10 'wear-resistant and with good sliding properties be equipped and therefore have a phosphate layer. With appropriate thread tension it can result that the ring traveler 10, 10 'tilts laterally runs along a ring, so it turns out to be beneficial can prove on the two end faces 2 with a wear-resistant Surface in the form of a phosphate layer to provide.

2a and 2b is a C-shaped example Ring traveler 10 shown, only in the area of its eventual Treads 1 ', and here only on the end faces 2 and the inside 3, but not on one Outside 4 coated with a phosphate layer 5 is. Because the ring traveler laterally during operation can tilt, it is advantageous in the area of the treads 1 not only those directly in contact with the ring standing inside 3 but also the end faces 2 of the To coat the ring traveler 10 with the phosphate layer 5, but this is not absolutely necessary. In the shoulder area 6 of the ring traveler 10, which during operation the ring traveler shows that it does not come into contact with the ring 10 no phosphate layer 5. The one from a basic material, such as. Steel, existing core 7 of the ring traveler 10 is thus on the outside 4 and in the shoulder area 6 of the ring traveler visible.

3a and 3b show a C-shaped example Ring traveler 10, completely with a phosphate layer is coated. It's not just in the tread area 1 coated all sides 2,3,4 of the ring traveler 10 but also all sides of the in operation shoulder area not in contact with the ring 6 of the ring traveler 10. This is for a longer life or the suitability for higher running speeds not necessary, results from coating Diving or spraying almost by itself and works has a positive effect on the yarn being guided. The yarn will thanks to the extremely finely structured phosphate layer in the Qualitatively unchanged compared to nickel-plated runners (Number of nits, etc.). The core 7 of the ring traveler 10 is completely surrounded by the phosphate layer 5, so that the core 7 is no longer visible from the outside.

For the production of the phosphated ring traveler 10, 10 ' known phosphating processes can be used, which, for example, the following process steps include:

The surface of the core 7 of the ring traveler 10, 10 ', the e.g. consists of steel, is advantageously before Phosphating finely polished, e.g. to ¼ to 1 µm since the Surface of the applied phosphate layer 5 approximately the roughness corresponds to the surface of the core 7. To one uniform phosphate layer 5 on ring traveler 10, 10 'it is advantageous to maintain the surface of the Core 7 of the ring traveler 10, 10 'well before phosphating to clean and free of grease. Also an advantage it is the surface of the core 7 after this cleaning rid of detergent residues because otherwise uneven conditions on the surface of the Core 7 to an uneven phosphate layer 5 lead the ring traveler 10, 10 '.

The application of the phosphate layer 5 to the ring traveler 10, 10 'takes place by immersing the ring travelers 10, 10' in a bath of phosphate solution or by spraying with of such a solution. After applying the phosphate layer 5 on the ring traveler 10, 10 'becomes the ring traveler 10, 10 'rinsed again and possibly dried.

Layer thickness and layer properties of the phosphate layer 5 are known to depend on those during manufacture selected parameters, e.g. the type of detergent, the composition of the phosphate solution, the Exposure time and temperature of cleaning and phosphating solution.

Claims (10)

1. Ring traveller for ring spinning or ring twisting machines, characterized in that the ring traveller (10, 10') has a core (7), the surface of which has a phosphate layer (5).
2. Ring traveller according to Claim 1, characterized in that the phosphate layer (5) is an iron phosphate, zinc phosphate or manganese phosphate layer.
3. Ring traveller according to Claim 1, characterized in that the phosphate layer (5) consists essentially of a compound of iron phosphate, zinc phosphate or manganese phosphate with alkali metals or alkaline-earth metals, in particular, in the majority, of zinc calcium phosphate.
4. Ring traveller according to one of Claims 1 to 3, characterized in that the phosphate layer (5) is impregnated with a friction-reducing lubricant.
5. Ring traveller according to one of Claims 1 to 4, characterized in that the phosphate layer (5) has a thickness of up to 10 µm and is applied to the core (7) of the ring traveller (10, 10') at least in the region of a running surface (1).
6. Ring traveller according to one of Claims 1 to 5, characterized in that the core (7) of the ring traveller (10, 10') is made of steel, ceramic or plastic.
7. Ring traveller according to one of Claims 1 to 6, characterized in that the core (7) has a polished surface.
8. Ring traveller according to one of Claims 1 to 7, characterized in that the phosphate layer (5) is applied by dipping or spraying.
9. Use of the ring traveller (10, 10') according to one of Claims 1 to 8 for spinning rings or twisting rings made of steel and/or for the spinning or twisting of cotton, wool, mixed yarns or synthetics.
10. Use of the ring traveller (10, 10') according to one of Claims 1 to 8 in a spinning mill or twisting mill.

Images