DE2364544A1 - LOOKING ROLLER FOR OPEN-END SPINNING MACHINES - Google Patents

Description

Patent attorney DIPL.-PHYS. DR, W. LANÜHOrF Lawyer B. LANGHi

MUNICH 81 · WISSMANNSTRASSE 14 · TELEPHONE 9327 74 · TELEGRAM ADDRESS: LANGHOFFPATENT MUNICH

Munich, December 21, 1973 Our reference: 50 - 1363

Seelemann-Baumann GmbH, 72β1 Oberhaugstett

Licker-in roller for open-end spinning machines

The invention relates to a lickerin for open-end spinning machines, with a roller body and one on the Jacket surface of the same helically applied sawtooth wire.

There are already lickerins known in which the The outer surface of the roller body is provided with a helical groove in which a sawtooth wire is used as a set is pressed in. Such a lickerin is relatively expensive to manufacture. There is also one not Gap formation to be avoided between the groove and the sawtooth wire, which is usually minimized as a makeshift by means of a rolling process will. This gap formation has a disadvantageous effect in the open-end spinning process.

The invention is based on the problem of 'a lickerin of the type mentioned to create, which is easy can be produced and garnished again with little effort and guarantees complete freedom from gaps.

The solution to this problem is to be seen in the fact that the jacket

50982770764

surface of the roller body is circular-cylindrical and that the sawtooth wire has a foot surface extending transversely to the tooth flanks has and helically with a lateral distance 'wound under tension on the lateral surface and single- ·. borrowed is attached at the ends to the roller body. It has 'It has been shown that such a lickerin roller, in contrast to the rollers drawn in grooves, is completely free of gaps and therefore not clogged and that the pulling up of the clothing is easier than with known lickerin orphans.

The lateral surface preferably has grooves only at the points corresponding to the ends of the sawtooth wire, into which the ends of the sawtooth wire can be clamped.

According to another further development, the foot surface of the sawtooth wire has a ^{width that is x} greater than that of the teeth, which increases the tilt resistance of the free-standing sawtooth wire.

It is favorable if the roller body has a higher coefficient of thermal expansion has than the sawtooth wire. With the heating of the same then the tension with which this is wound on the roller body, not after.

Preferably, the foot surface of the sawtooth wire is with the Glued outer surface of the roller body. ';

The invention is described in the following with the aid of schematic drawings using an exemplary embodiment.

Figure 1 is an axial section through a lickerin according to. Invention.

FIG. 2 is a cross section along line II-II of FIG. Figure 1.

Figure 3 is a cross section through a sawtooth wire '.... 509827/0764 5 ^ original .. _:

in the plane of a tooth.

Figure 4 is a side view of a length of sawtooth wire.

FIG. 5 is a larger illustration of that shown in FIG dashed area of the lickerin.

The lickerin roller shown in FIG. 1 comprises a roller body 1 which has a circular cylindrical jacket surface 2 has, which are limited by circumferential shoulders 3 at their front ends is.

There is one near each of the two circumferential shoulders Groove 4 milled or sawn into the lateral surface, which extends only over a short part of the circumference.

A sawtooth wire 5 is wound onto the jacket surface 2 in spiral turns, the beginning of the sawtooth wire being clamped in one groove 4 and the sawtooth wire being wound onto the jacket surface under tension and with a lateral distance between adjacent windings. The end of the sawtooth wire is clamped in the other groove, so that the sawtooth wire under \ voltage _on the roll body rests. The sawtooth wire can also be glued to the roller body . ■ ..;, ■ j ^; . _; · ■ j ] 'f

Figure 2 is a cross-sectional view ^i; ht> which shows the shape of the sawtooth wire. ¹ j ■ i ^:

As can be seen even better from FIGS. 3 and 3, the sawtooth wire has: a foot region 6 which has a foot surface which is normal to the flank 81 of the teeth, ie to one containing the teeth Level ^! , erötitickt. The tooth area 9 of the saw wire :. has, a smaller thickness than the foot area 6, and; the ■ teeth, taper towards their ends.

ί ' ^Ί

'NSPECTED

to, but can be somewhat blunted at the tips 10. A typical sawtooth wire has a tooth height of 2 to 5 mm, a tooth spacing of about 3 mm and a width of the foot area of about 1 mm.

It can be seen from Figure 2 that the end of the sawtooth wire extends into the groove 4, which runs in the circumferential direction and in which the sawtooth wire is tightened by deforming the side surfaces of the groove '. The tight end the wire has no teeth.

The sawtooth wire can of course also have a cross-sectional shape other than that shown in FIG. It can, for example, taper conically from the foot surface 7 to the tip 10. It is also not absolutely necessary _; a. 6. foot area to be provided., The wider; is as.; the tooth area $.

The licker-in can be re-cooked in a simple manner. For this purpose, the sawtooth wire is pulled out of the clamping points in the area of the grooves and, if necessary the grooves milled. Most of the time, that of the grooves are omitted, because when pulling out the sawtooth wire from the same the groove flanks .. somewhat widened so .that, the 'end of a; new sawtooth wire in the The groove is pressed in and can then be clamped. A new sawtooth wire is then pulled up in of the type described above.

Figure -5 shows a partially in section. shown. View along the line II-II of Figure ¹ \ .. ■ Man 'recognizes · in jeinzelnen how-the end of a Sägezähndrahtes in eiifie Nut..hine.inragt. The teeth werden.im clamping area removed and · only "the tooth root is pinched This' achieved that ^.the;.? Sawtooth, sure;. Inj the groove; festjcl.emmen can andl; that in the effective tooth area of ^ iVorireißerwalze there are no undesirable edges which could lead to clogging. ' ! ι;,:. - 'i ^■: 11

0982 * 7/07

.inspected

I,

Due to the fact that the windings of the sawtooth wire are laterally spaced from one another, no staple fibers can get stuck in places other than the teeth on the lickerin roller. This largely prevents the lickerin roller from clogging.

5 098 2 7/076

Claims (5)

Sponsorship claims Licker-in roller for open-end spinning machines, with one roller body and one on the outer surface of the same helically applied sawtooth wire, characterized in that the The outer surface of the roller body is circularly cylindrical and that the sawtooth wire is transverse to the tooth flanks having running foot surface and wound helically with lateral spacing under tension on the lateral surface and is attached at the ends to the roller body. 2. Licker-in roller according to claim 1, characterized in that that the jacket surface is only at the points corresponding to the ends of the sawtooth wire Has grooves into which the ends of the sawtooth wire are clamped. 3. Licker-in roller according to claim 1 or 2, characterized in that the foot surface of the Sawtooth wire has a greater width than that Teeth. M. Licker-in roller according to Claims 1 to 3, characterized in that the roller body has a higher coefficient of thermal expansion than the saw-tooth wire. 5. Licker-in roller according to claim 1 to 4, characterized in that; indicates that the foot surface of the sawtooth wire is glued to the outer surface of the roller body. 509827/0764