US3236040A

US3236040A - Spinning or twisting ring

Info

Publication number: US3236040A
Application number: US235819A
Authority: US
Inventors: Gisinger Anton
Original assignee: SFG Schwaebische Formdrehteile GmbH and Co KG
Current assignee: SFG Schwaebische Formdrehteile GmbH and Co KG
Priority date: 1962-10-03
Filing date: 1962-11-06
Publication date: 1966-02-22
Anticipated expiration: 1983-02-22

Description

Feb. 22, 1966 Filed NOV. 6, 1962 A. GISINGER SPINNING OR TWIS'IING RING 2 Sheets-Sheet l Fig. 1

4 3 41," "w 2 5 HI i it 5% a 5 m Fig. 2

'MWW United States Patent 3,236,040 SPINNING 0R TWISTING RING Anton Gisinger, Stotten am Auerberg, Allgaeu, Germany, assignor to Schwabische Formdrehteile G.rn.b.H., Bahenhausen, Germany Filed Nov. 6, 1962, Ser. No. 235,819 2 Claims. (Cl. 57-119) This invention relates in general to spinning or twisting ring construction and in particular to a new and useful spinning or twisting ring made of a single sheet of metal which is generally T-shaped in section with a flange portion formed of two crank legs to form an opening therebetween for cooling purposes.

Prior to the present invention, spinning or twisting rings made of steel sheet materials in single or multiple pieces have been known. When such rings are made in one piece, they include a receiving cylinder which is very diflicult to produce for attachment of a ring to a ring bench. When they are made in multiple pieces, they consist, for example, of upper and lower portions which must be detachably connected together. In constructions of this type, only the upper portion or portions are made of sheet steel which rests on a massive lower portion. Both types of spinning rings have the disadvantage that the ring web is interrupted at its inner surface by the form of the receiving cylinder or by a joint between the upper and lower portion. The result of this is that loose thread particles settle on the inner side of the ring which, when detached later, coil into the spun thread, reducing the quality thereof.

Some of the known spinning or twisting rings of this kind consist of several layers of sheet metal at the ring web or at the ring flange. Other rings have a ring flange which is designed as a closed cavity and serves as an oil chamber. All of these designs make the manufacture complicated and expensive. In spinning rings formed of several layers of sheet material, an additional factor is that the web and the flange thickness must not exceed a certain limit when the rings are small. In such cases, very thin sheets are required and this further complicates the manufacture, and particularly so in respect to the hardening of the ring.

A general disadvantage of known spinning rings and twisting rings also resides in that, due to the high running speed of the ring traveler, the temperature at the inner edge of the ring flange and in the traveler is greatly increased. As a result of this, the wear of the ring and the traveler is accelerated and, in addition, the number of thread ruptures is increased.

In accordance with the present invention, there is provided a spinning or twisting ring which is easy and inexpensive to manufacture and which comprises a ring web as well as a ring flange which is made of a single piece of a single layer of steel sheet. The ring web is made with an interior which is smooth and which terminates at its upper end in a ring flange formed of two crank legs, one turned inwardly toward the center of the ring and another turned outwardly, forming therebetween on the opposite side of the curved interior face an opening which provides a cooling effect. This construction also permits very simple manufacture by a deep-drawing process, since excessive heating of the ring flange is avoided and a quick cooling effect is produced on the open side of the flange.

A further advantage in the construction is that the flange is such that it will easily receive supporting rings at the exterior face and various rings may be coordinated with various supporting ring structures.

A further advantage is that the open side of the flange portion permits the easy application and removal of the ring traveler around the flange portion without any deformation of the traveler. In addition, the movement of the traveler around the ring induces a cooling air circulation within the flange and thereby extends the life thereof.

An object of the invention is to provide a ring construction for spinning or twisting machines.

A further object of the invention is to provide a ring construction for a spinning or twisting machine which is formed of a single sheet of metal with a flange portion formed in a substantially U-shaped manner, with a curved portion extending inwardly toward the center of the ring and with the leg portions diverging outwardly on the opposite side to form an opening therebetween.

A further object of the invention is to provide a ring construction for a spinning machine and the like which comprises a single sheet of steel material which is formed into a ring with the inner web portion being substantially smooth and with an upper flange portion formed with two crank leg portions extending in opposite direction and defining a curved portion facing the interior of the ring, and an open portion on the exterior, and including a supporting ring embracing the outer side of the ring adjacent the lower end thereof.

A further object of the invention is to provide a ring structure for spinning machines which is simple in design, rugged in construction and economical to manufacture.

The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings and descriptive matter in which there are illustrated and described preferred embodiments of the invention.

In the drawings:

FIG. 1 is a section through a spinning ring constructed in accordance with the invention;

FIG. 2 is an enlarged fragmentary sectional view of the flange portion of the ring indicated in FIG. 1;

FIG. 3 is a view similar to FIG. 2, but indicating the manner in which a traveler is installed over the flange portion of the ring; and

FIG. 4 is an enlarged sectional view of the flange por tion of another embodiment of the ring.

Referring to the drawings in particular, the invention embodied therein includes a ring generally designated 1 which is made of deep-drawable steel sheet material and is provided with a cylindrical ring land or web portion 2 having a continuous smooth inner surface extending from the lower end of the ring up to a flange generally designated 3 which is formed at the upper end thereof.

In accordance with the invention, the ring flange 3 is formed as an integral portion of the Web 2 and the overall ring has a generally T-shaped cross-section. The flange 3 is made so that it opens at the outer end and it is provided with a rounded inner edge 4 which faces the center of the ring.

As indicated more clearly in FIG. 2, the flange 3 in- J cludes a substantially U-shaped formation which comprises a crank leg portion 6 extending in an inward direction, and a crank leg portion 7 extending in an out- 1 ward direction in respect to the center of the ring. The crank portions 6 and 7 are connected by the curved portion 4. The top 30 of the crank leg portion 7 is advantageously made substantially flat to formthe roof of the ring member. The two crank legs 6 and 7 form an opening 8 therebetween through which air circulates, so that a natural cooling etfect is exerted on the ring 3 and excessive heating of the flange and the spinning traveler to be associated therewith is avoided.

As indicated in FIG. 3, it is a simple matter to apply the ring traveler 9 onto the flange 3 without any danger of causing deformation of the flange. The usual ring traveler 9 having leg portions 9a and 9b which are separated by the distance indicated in FIG. 3, may be easily inserted around the flange without danger of deformation of the traveler. This is so because the end 9a may enter easily into the space 8. At the most, only a slight further widening of the traveler 9 is necessary, and this can easily be accomplished since the traveler is made of elastic material and will expand without any permanent deformation. Therefore, the outside of the flange can be lengthened as compared to the usual profile according to DIN (German Industrial Standards) 64000 without resulting in difliculties when mounting the travelers.

An important feature is that the crank leg 7 is lengthened to furnish a larger surface of the roof of the flange profile acting as a cooling fin, and also to increase the cooling effect of the air gap 8. The cooling of the flange 3 by this process during the operation of the traveler 9 has, as a matter of fact, proved to be extremely important. Until the present time it was assumed that the hardness of the contact surfaces of the ring and the traveler alone determined the life of the apparatus. Experiments have shown, with the flange profile according to the present invention, that a long life is obtained and also with a much lower material hardness due to the excellent cooling which is present. This is true because there is no longer an annealing action of the traveler and abrasion of the annealed traveler on the ring as in prior art constructions, but instead the traveler material retains its initial hardness, even at high running speeds.

In the embodiment indicated in FIGS. 1 to 3, the roof 30 is substantially flat but is slightly inclined from the horizontal downwardly from the center of the ring outwardly. This construction insures that at strong thread tension the traveler will be pulled inwardly to the extent that its end will abut on the inside of the web 2 so as to disturb the steady running of the traveler. An angle of inclination of the roof 30 of 745 has proved particularly advantageous.

The supporting ring 10, with an outside diameter adapted to the receiving bore of the ring 1, is arranged adjacent the lower end of the web 2. The supporting ring 10 is preferably made of a plastic and it is fastened on the spinning ring 1 by pressing or gluing or by extrusion clodding. For a better hold on the ring 1, the ring web 2 may, during extrusion, be roughened at the exterior by providing, for example, corrugations, depressions, notches and the like.

With a construction as described above, it is possible to selectively assign a supporting ring of a chosen diameter to accommodate the particular, spinning ring size. This permits the production cost to be lessened, since a ring type produced with one drawing tube can be used for different ring bench sets. In addition, the described spinning ring construction weighs considerably less than spinning rings made entirely or partly of massive material, and due to this the ring bench which supports a plurality of rings is lighter, so that a smaller moment of inertia must be overcome to drive it.v

In FIG. 4, another embodiment of the invention is indicated which includes a ring generally designated 11 i which includes a Web 12 with a crank leg portion 13 extending inwardly therefrom, and a crank leg portion 14 extending outwardly from the leg portion 13. The inner surface of the flange portion generally designated 32 is curved to define an inner curved edge 15. The

crank legs

13 and 14 define between them an interior space or cooling air gap 17 for the flow of cooling air therethrough. The upper portion or roof 34 of the leg 14 extends in an arc slanting downwardly toward the outside of the ring. The length of the roof 34 is such that a traveler generally designated 16 does not touch the end of the roof in normal running. The effect of this arrangement is that during operation the traveler 16 moves so that the outer end 18 adjacent the mouth 20 of the gap 17 produces an air whirling which penetrates into the interior of the gap and sucks out the heated air present therein and also supplies fresh cooling air. The cooling air reaches the wall 19 at the interior of the gap 17 and serves to prevent excessive heating of the traveler 16 and of the flange edge 15, resulting in a considerable lengthening of the life of the ring and the traveler.

The process of cooling the ring 11 and the traveler 16 by the cooling air flow is assisted in particular by the fact that there is only a small distance between the free end of the roof 34 and the traveler 16, so that the escape of the air stream produced by the end of the traveler in a direction upwardly into the free zone is hindered. The air instead is forced into the interior of the gap by the inner surface of the roof 14.

In some instances, the roof 14 is arranged to extend substantially horizontally to define a fiat roof and then is provided with an inclinded or vertical crank portion which extends downwardly from the flat roof portion. An important consideration in the construction is that the mouth 20 of the cooling air gap 17 should be located above the outer end of the traveler 16 when the latter is in the operative stage, and that in this stage the end of the roof 14 should extend close to the orbit of the traveler above the outer end thereof.

While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles.

What is claimed is:

1. A spinning or twining ring made of a single layer of steel plate having a ring land designed as a substantially smooth vertical cylinder with a first wall portion bent oil at the upper end of the ring land toward the ring center, a second wall portion bent off at the outside of the ring from said first wall portion, said ring land with said first and second wall portions defining a T- shaped ring flange guiding the traveler, said first and second wall enclosing a gap open to the outside of the ring which permits access of cooling air in the flange up to an edge of the ring flange opposite the guiding edge of the traveler, said first and second wall portions being connected by a rounded transition forming the guiding edge of the traveler which is substantially arcuate and extends up to the vicinity of the path of motion of the outer traveler part.

2. A spinning or twining ring for a traveler made of a single layer of steel plate having a ring land designed as a vertical and substantially smooth cylinder, a first flange wall bent off at the upper end of the ring land toward the ring center, and a second flange wall connected. with the first flange wall over a round transition forming the guiding edge of the traveler which transition extends from the topmost edge of the ring downwardlysubstantially in a circular are, said second flange Wall being spaced from said first flange wall to form an exterior open mouth arranged on the outside of the ring, said ring land being substantially cylindrical P to its bottom end where it is cut OE and embraced'by 5 a supporting ring adapted to the ring holder whose bottom edge is flush with the said bottom edge of the ring land.

References Cited by the Examiner UNITED STATES PATENTS 5 1,265,924 5/ 1918 Lanning 571 19 1,351,595 8/1920 White 571 19 3,056,250 10/1962 Backus 57119 MERVIN STEIN, Primary Examiner.

RUSSELL C. MADER, DONALD W. PARKER,

Examiners.

Claims

1. A SPINNING OR TWINING RING MADE OF A SINGLE LAYER OF STEEL PLATE HAVING A RING LAND DESIGNED AS A SUBSTANTIALLY SMOOTH VERTICAL CYLINDER WITH A FIRST WALL PORTION BENT OFF AT THE UPPER END OF THE RING LAND TOWARD THE RING CENTER, A SECOND WALL PORTION BENT OFF AT THE OUTSIDE OF THE RING FROM SAID FIRST WALL PORTION, SAID RING LAND WITHN SAID FIRST AND SECOND WALL PORTION DEFINING A TSHAPED RING FLANGE GUIDING THE TRAVELER, SAID FIRST AND SECOND WALL ENCLOSING A GAP OPEN TO THE OUTSIDE OF THE RING WHICH PERMITS ACCESS OF COUPLING AIR IN THE FLANGE UP TO AN EDGE OF THE RING FLANGE OPPOSITE THE GUIDING EDGE OF THE TRAVELER, SAID FIRST AND SECOND WALL PORTIONS BEING CONNECTED BY A ROUNDED TRANSITION FORMING THE GUIDING EDGE OF THE TRAVELER WHICH IS SUBSTANNTIALLY ARCUATE AND EXTENDS UP TO THE VICINITY OF THE PATH OF MOTION OF THE OUTER TRAVELER PART.