DE2341609A1 - TWISTING DEVICE - Google Patents

Description

Priority : August 19, 1972 in Japan, Note No. i 83 095/72

The invention relates to an improvement in a yarn twisting device. In particular, the invention relates to a yarn twisting device in which yarn is put through use of a supported ring is twisted while floating in space without the ring in contact with any assigned ring holder comes. The thread is wound onto a bobbin.

The twister in which a ring is in a floating state is held without coming into contact with a ring holder, is already in U.S. Patent 2,932,152 and has been described in many other publications.

However, with such devices it has been difficult to

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to keep a ring in a stable state of suspension and has therefore not yet been implemented in practice.

The device disclosed in U.S. Patent 2,932,152 attempts to levitate a ring by magnetic repulsion to hold and at the same time to stabilize the ring in the transverse direction by means of compressed air. If the ring, however except equilibrium is insane, becomes strong magnetic Out of equilibrium force is applied radially to the ring and makes the ring unstable. To stabilize the ring radially, air is expelled across to balance the magnetic force. However, it is very difficult to match the ring with a good one To keep stability without causing him to touch the ring holder. Accordingly, it is essentially from the point of view impossible to make such a device practical.

According to the invention, therefore, the object is to provide a yarn twisting device to create, in which a ring is held in a suspended state, without that this is in contact with the ring holder comes.

In such a yarn twisting device, the holder of the ring should advantageously be very stable in the floating state without the ring coming into contact with the ring holder. The invention is in an advantageous manner Created yarn twisting device in which a ring is held in a floating state by balancing the forces

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a compressed fluid and magnetism.

Further advantages and features emerge from the following description.

According to the invention there is provided a yarn twisting device in which a ring is held in a stable state, without letting him touch a ring holder, namely by simultaneously applying repulsive forces, the generated by a fluid jet, and attractive forces that are generated by magnetism and act on the ring at the same time.

The device according to the invention has the following features:

a) a spool for winding a garni supporting and rotating spindle,

b) a ring surrounding the spindle and introducing the yarn from a supply source to the bobbin,

c) a ring holder comprising the spindle, which moves with a relative reciprocal movement along a Axial direction of the spindle moved, has a fluid chamber in its inner part, an annular surface for loosely fastening the ring and fluid nozzles, which direct a compressed fluid jet through the annular surface from the fluid chamber, and

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d) a device for generating a magnetic force, through which the ring is tightened to the ring holder.

In the following, a particular embodiment of the invention is explained with reference to the drawings in conjunction with the following description.

Fig.l is a group of two curves showing the relationship between the gap between the ring and the ring holder point to the load capacity (absolute volume), one curve for the magnetic attraction and the other for the repulsion of air.

Fig. 2 explains the Roters formula, which concerns the magnetic lines of force of the magnets, which mutually attract and transmit in a right-angled direction.

Fig.3 a) and b) show an embodiment of the present Invention. Fig.3 a) is a cross-sectional view of a ring and a Rkighalters. Fig.3 b) is a Top view of part of the ring holder. A section along the line X-X in Fig.3 b) represents the left Half of Fig.3 a), while a section along the line Y-Y in Fig.3 b) the right half of Fig.3 a) represents.

Fig. 4 a) and b) represent another embodiment of the invention Fig. 4 a) is a cross-sectional view

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a ring and a ring holder. Fig. 4 b) is a plan view of the part of the ring holder.

Fig.5 a) to d) show a further embodiment of the Invention. Fig.5 a) is a sketch showing the structure of a magnet shows. Fig.5 b) is a sectional view along the line X-X in Fig.5 d). Fig. 5 c) is a sectional view along the line Y-Y in Fig.5 d). Fig. 5 d) is a top view of the ring holder.

6 a) to c) show a further embodiment of the invention. Fig. 6 a) is a sketch and shows the structure of a magnet. Fig. 6 b) is a sectional view along the line X-X in Fig.6 c} a ring and a ring holder. Fig.6 c) is a plan view of the ring holder.

7 shows a further different embodiment of the invention, this is a sectional view of a ring and a ring holder.

FIG. 8 is a schematic view showing FIG Combinations of arrangements of the magnets used according to the invention.

Fig. 9 is a schematic view showing a preferred arrangement of the embodiments

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of Figures 3 and 4 magnets used.

Fig. 10 a) to e) are sketches showing magnet constructions, useful at the moment the ring is turned.

Fig. 11 is a perspective view of a ring holder, which is provided with a slot to guide the yarn.

Fig. 12 a) and b) are broken perspective views showing annular electromagnets in the position where a slot is provided on a ring holder is.

FIG. 13 is a schematic view showing FIG basic stabilization of the rings in Figures 3, 4, 5 and 6.

Fig. 14 is an illustrative perspective view an embodiment with an annular permanent magnet and a plurality of stages in one Magnetic pole.

Fig.15 is a cross-sectional view of a ring and a Ring holder when air is also propelled as a jet from the side wall of the holder.

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Fig. 16 is a graph of pneumatic pressure Spring constants showing properties of the magnet according to the invention.

17 shows further another embodiment of the invention, wherein it is a cross-sectional view of a ring and a ring surrounding a yarn package holder.

FIG. 18 is a perspective view showing the magnetic action in that shown in FIG Embodiment.

FIG. 19 is a schematic view showing FIG Stability of the ring and the embodiment of Fig.17.

Fig. 20 a) to c) and Fig. 21 α) and b) are broken off Views giving examples of the structures of electromagnets, where a slot on the ring holder is provided; Figures 20 a) and 21 a) are perspective views, and Figures 20 b), 20 c) and 21 b) are cross-sectional views.

Fig. 22 is an illustrative perspective view an example of the structures of the ring and ring holder where the ring in the embodiment according to Fig. 17 is stationary.

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Fig. 23 is a cross-sectional view showing a another other example of the ring and ring holder assembly.

Fig. 24 is a cross-sectional view showing a Embodiment of the invention in which a hook is provided on the ring, and

Fig.25 is a cross-sectional view showing a Embodiment in which another pneumatic nozzle is provided in the device of FIG.

The yarn twisting device according to the invention has a yarn guide which surrounds the bundle on which the yarn is being wound, combined with a ring holder, the to the yarn guide is kept at a distance so that the yarn guide is in a free floating state when they moves in an oscillating manner along the bundle axis.

The bracket "has an air duct and openings for emitting a pressurized fluid jet, such as compressed air. A magnet is also provided to apply a magnetic force of attraction between the guide and the bracket and a contactless and stable Bracket to get guidance through the combination of repulsion and attraction.

As a result of vigorous experimentation, it has been found that when a pneumatic repulsive force is applied between a

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Ring holder and a ring and simultaneous action an attractive magnetic force between them in the opposite direction, the repulsive force by the attractive force is balanced and it becomes possible to create a stability condition or state under which essentially no resultant force acts on the ring. At the same time the shift or dislocation of the ring against the ring holder in a direction perpendicular to the magnetic attraction force, and the stability the ring is greatly improved.

In the following the invention is explained in detail with reference to the embodiments and schematic views and Drawings explained.

Fig.l is a diagram showing the relationship between (a) the repulsion generated by a fluid jet used in the invention _f and (b) the magnetic attraction with the gap between the ring and the ring holder plotted as an abscissa and the absolute value of the load capacity or charging capacity is plotted as the ordinate. If, according to the representation in Fig. 1, gradients of curves of the load capacity of the corresponding magnets and of the pneumatic forces are ensured _f the intersection of the two curves becomes a part of stability at which the resulting force is zero, a repulsion and attraction in the Opposite direction sir-f "

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Next, the magnetic force of attraction of a magnet and its effect in the vertical direction are shown with reference to FIG. In FIG. 2, the magnetic flux density values of alternately attracting magnets 1, I ¹ are assumed to be constant (with the exception of a non-uniform part of end leakage), and they may have a magnetic conductivity or a magnetic conductance P. If the magnet 1 is displaced in this case by a differential displacement dr in the direction r, which is transverse to the magnetic lines of the force of the magnet, a restoring force becomes effective. This restoring force Fr is according to the rotor formula

, 2 dP Fr ⁰ ^ - (magnetometric force) (i)

dr

where P is approximately equal to the product obtained by dividing the area S, which is common to the two magnetic poles, by ds η gap £ j between them.

S.
Accordingly, P = -sr

- (magnetometric force) ^{2 SX} (2)

It can thus be seen that when the magnet is displaced in a direction transverse to the magnetic attraction, a restoring force becomes effective which is proportional to the rate of change dS of the common area of the magnetic Pole regarding the madness dr is. This restoring force is similar in permanent magnets and electromagnets effective.

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In the following description and in the claims, the term "ring holder" is used for the sake of brevity the holder is used, which holds the ring in a "floating" state, where it can be seen that the Use in this sense of the word "holder" does not include physical contact between the two elements.

3 shows an embodiment of the invention in which a ring holder 2 has an inner ring-shaped air chamber 3. The ring holder 2 also has an annular surface with an L-shaped cross-sectional area and a cylindrically shaped inner surface 4 and a disk-shaped base surface 5. The ring 6 has an outer diameter slightly smaller than the inner diameter of the ring holder 2 and becomes narrow next to the ring holder 2, but at a distance from this, held. The left half of FIG. 3 a) shows a section along the line XX in FIG. 3 b), while the right half of FIG. 3 a) shows a section along the line YY in FIG. 3 b). Compressed air comes from one or more compressed air supply pipes 7 provided on the annular base 5 of the ring holder 2, flows through the air chamber 3 through nozzles δ and flows out through a pressure chamber 9 to keep the ring floating. The pressure chamber 9 is desirably a channel about 1 mm deep and holds the expelled air temporarily to form a pressurized layer and is useful for maintaining a stabilized levitation force. Column-shaped permanent magnets 1, I ¹ with the same transverse

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Cutting areas are shown in this embodiment. They are respectively at corresponding positions on the ring 6 and the ring holder 2 (both are made of non-magnetic substances) and are arranged at a radius which is approximately the same as that of the air nozzles 6. As shown in Fig. 3a) the permanent magnets 1, I ¹ attached slightly under the annular base of the ring holder withdrawn. When air is supplied from the air nozzles 8 under controlled pressure, the ring 6 is held stable and floating in space without it coming into contact with the ring holder 2. The yarn 10 runs through the gap 11 between the ring 6 and the ring holder 2 and is guided to a bobbin 13 which is held and rotated by a spindle 12. The ring holder 2 oscillates by means of a conventional drive device, which is not shown, specifically along the spool 13 in the axial direction. The drive means can be a conventional cam device or, for example, an oil pressure mechanism. The bobbin picks up the yarn in this way and collects it to form a yarn bundle 14-.

Figures 4 a) and b) show another embodiment of the invention. In addition to the ring 6, two magnetic holders 15, 15 ', which consist of a non-magnetic substance, are provided in addition to the ring holder. The permanent magnets 1, I ¹ are arranged in corresponding positions of the ring and the ring holder along the circumference of the magnet holder at the same radius. The magnet holders and the permanent magnets

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are fitted at a distance (b) which is measured in the direction of the levitation gap (a). When the ring is 6 and the ring holder 2 are made of a magnetic substance, such a substance does not hinder the operation of the magnets or the activity of the coiler.

In the aforementioned two embodiments, the magnets are slightly below the surfaces of the Rhges and the ring holder fitted back, which is an effective means of keeping the magnets out of the yarn path, whereby the hovering of the ring when starting and when reaching the point of equilibrium is made possible under the influence of air and magnetic forces.

Another different embodiment is shown in Fig. 5 a) to d). Here the magnets - as roughly shown in Fig. 5 a) - are ring-shaped electromagnets. On the outside Walls of a ring 16 and a ring holder 17 are openings 18, 18 '. A magnetic surface of attraction is provided in a discontinuous fashion around the perimeter of each opening. The openings 18, 18 'are with a non-magnetic substance filled so that they do not interfere with the winding of the yarn. How to continue in the Figures 5 b) and 5 c) each consist of the upper surface 19 of the holder, the bottom surface 20 of the Ring and the outermost wall 21 of the Haitian made of a non-magnetic substance. By applying an electrical Current to a coil 22 through in e: ", ner line 23 carried

* C 9 8 1 0; ^r j S £ -

bent wires becomes an annular DC magnet with a discontinuously or periodically attractive surface educated. If now compressed air is expelled from an air chamber 3 via nozzles 8, the soil surface increases 20 of the ring on the push-off pressure and the ring floats in a degree corresponding to the pressure; how, however, through the two dash-dotted lines in Fig.5 a) is shown because of the magnetic field created by applying the electrical Current is caused, in the same way as in the two embodiments mentioned above, a downward direction Attraction applied to the ring and tries to let it sink a bit. The location of the ring is but limited by the balance between the magnetic force and the pneumatic force and in, radial direction through defines the attractive force of the magnet, since further the magnetic attractive surface is discontinuous or is provided intermittently, the movement of the circumferential direction is controlled. Therefore the ring floats in more stable Way and is solid with no deviation or rotation in the frame. The outermost wall of the holder 21 also improves stability of the ring in the radial direction by using the pressure of the discharged air to create a gap, which is formed between the outermost wall and the ring.

In the above embodiments, magnets are with alternating forces of attraction on the ring and / or the ring holder provided in a radial direction, which is why the Ring does not rotate with respect to the circumference.

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Other embodiments of the invention are shown in FIGS. 6a) to c). Wfe shown in Fig.6 a) are the outer walls of the ring 16 and the ring holder 17 made of magnetically attractive surfaces, which in their circumferential directions are continuous. This is ensured by creating an annular direct current electromagnetic Systems. The regulation activity for the circumferential movement of the ring disappears, and the Ring can therefore rotate freely.

In all of the embodiments described above the ring-shaped surface of the ring holder is generally L-shaped in cross-section and pushes the flux to the top. At the same time, a magnetic force of attraction is exerted axially by the ring holder. From the above Principle of the invention, it is also possible, as shown in Figure 7, the surface of the ring holder as a disk-shaped Shaping level and holding the ring with adequate stability.

However, since the ring tries to fall off when stopping or starting or to slide sideways, this arrangement is not practically preferred. As with the aforementioned embodiments, if a side wall is provided for the ring holder, a pressurized flux layer becomes also formed between the ring and the side wall which further improves the radial stability of the ring.

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In the aforementioned embodiments, when the ring is stationary, the frictional force between the ring and the around the outer circumference of the ring sliding yarn relatively large. If accordingly the yarn around the bundle or the package is wound with a certain winding tension, the permissible maximum denier number, the inflation speed and the number of twists or twists somewhat. borders. However, if the ring is free to rotate, rotate he moves freely under the influence of the frictional force between the yarn and the outer circumference of the ring and reduces the relative frictional force between the ring and the yarn. At the same voltage level, the allowable number is Twists of the twist that can be applied to the yarn are greater when the ring is freely rotated.

Various combinations which are used in accordance with the invention are shown schematically in Figure 8, with the side of the ring and the side of the ring holder can extend either up or down. Set in Fig. 8, as shown in the legend, obliquely lined parts (c) magnets, dotted parts non-magnetic substances and solid parts (e) represent magnetic substances. In the cases of combinations (a), (b), (d), (e) and (f) in Fig.8 rotates the ring. In the cases of combinations (c) and (g) the ring is stationary.

A magnet with a continuous or intermittent attraction surface in the circumferential direction, the invention

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is used according to, can - as described in the aforementioned embodiments - by using a columnar or ring-shaped permanent magnets or electromagnets.

A preferred arrangement of magnets when using permanent magnets and without a rotating ring is shown in FIG. In particular, when adjacent magnetic poles of the permanent magnets 1, I ^{1 are arranged} in alternate opposed positions, a magnetic substance 24 with the same radius as that at which the permanent magnets are arranged is provided on the upper surface of the permanent magnets on the ring side and a similar magnetic substance Substance 24 'is provided on the bottom of the magnets on the holder side, a magnetic current is generated, as shown in the two dot-dash lines in Fig. 9. Since the resulting magnet current becomes a closed loop, this advantage is that the efficiency of the permanent magnets increases and demagnetization decreases. This explanation applies even if any of these magnets 1, I ^{1 is} replaced by an electromagnetic substance.

Figures 10 a) to e) show simplified arrangements of magnets that differ from the free rotation of the ring are provided. In Fig. 10 a) the ring holder 2 is a ring with spaced inner and outer upstanding ring flanges. Column-shaped direct current electromagnets 25 are

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located under the same radius, and the polarities of the magnets are the same in the up and down directions. At this time, the magnetic attraction surfaces of the inner wall and the outer wall of the ring holder have the same polarity (north in the illustration). The ring body consists of two permanent magnetic ring-shaped flange rings 26, 26 ', which in the radial position correspond to the display surfaces correspond to the inner wall and the outer wall of the ring holder. The ring is preferably formed so that this two rings are made in one piece by means of non-magnetic substance material.

Furthermore, FIG. 10 b) shows a case in which ^{a columnar direct current electromagnet 25 is arranged between the inner wall 2 r} and the outer wall 2 ″ of the ring holder in the radial direction of the ring holder, leading to the center of the circle, and the polarities of the magnet 25 are compacted in the inner and the outer wall, and the inner wall and the outer wall of the holder have different polarities, then the ring 6 is preferably made of permanent magnetic material.

Next, Fig.10 shows c) an embodiment in which on the side of the ring holder columnar direct current electromagnets 25 concentrically along the circumference of the ring holder are arranged at regular intervals. The ring 6 is made of a magnetic material, the inner and outer diameters the same as imaginary diameters

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Are circles circumscribed around the innermost and outermost points of the magnets. The shape of the attachment surface the magnet can be circular, oval or rectangular. In Figures 10 a), b) and c) it is columnar electromagnets.

Fig.10 d) is an embodiment, which the thought the attachment of ring-shaped permanent magnets 27, 27? shows, which are magnetized when that magnetic pole is in the axial direction on a ring and a ring holder turns. Fig. 10 e) shows an embodiment in which any of the ring-shaped permanent magnets of Fig. 10 d) is replaced by a permanent magnetic substance 6 for the purpose of simplification.

In addition to the above, various Changes in practice can be made according to the basic combinations shown in Figure 8.

In the present invention, when a slot is provided on a ring holder for the yarn to pass, the twine hooking action against the bobbin becomes very easy. Fig. 11 shows a basic form of such a situation. When a Slot provided on the ring holder 2 for the yarn to pass in an annular electromagnetic system the direction of the coil must be changed at the slot, and the ring holder is used to generate the magnetic current divided into two parts.

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Figures 12 a) and b) also show such embodiments of an annular electromagnetic system. Since in this case the two pairs of holders are provided for the formation of the magnetic current in the ring holder, the ring is formed from two permanent magnetic rings 26, 26 ', which have different inner and outer diameters in order to hold each of the corresponding ring holders 2 ¹ , 2 " and an intermediate non-magnetic ring 29 connects these two rings to one another, as shown in Fig. 12 b).

The principles by which a ring is stabilized in the above embodiments are as follows. When compressed air is jetted as a jet from nozzles on the ring-shaped base of the inner surface of the ring holder, the repulsion due to the static and dynamic pressures of the air is balanced with the magnetic attraction force caused by a magnetic current. In particular, when the forces exerted on the ring holder and the ring in an axial direction and a radial direction of the ring are effective in the manner shown schematically in the aforementioned embodiments of the invention, they work in the manner shown in FIG. The ring 16 is spaced apart by the effects of compression of an artificial spring constant due to the total pneumatic pressure kz , an extension spring constant due to the magnetic attraction force kx and an artificial decrement constant

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or damping ratio number due to the damping ratio by the total pressure of the compressed air between the ring and the ring holder and the decrement or the damping ratio, .. which is determined by the difference in relative speed of the side wall of the ring is caused by the discharged air cz_ in the axial direction; an artificial compression spring constant due to the static pressure of a film of air between the side wall of the ring and the side wall of the ring holder k £ caused is, an artificial length spring constant due to the centripetal force in a radial direction kr caused by the magnetic attraction force in the axial direction Fz and an artificial decrement constant due to the decrement by the static pressure of the air film, the is caused between the side wall of the ring and the side wall of the ring holder, and as a result of the decrement, which by the difference in the speed of the air emitted to the bottom surface of the ring and that of the radial air the air emitted to the ring is caused by Cr, all of which lie in the radial direction of the ring.

In this system, the external force working in an axial direction of a spindle is mainly periodic external force Tz · sinus ü / t associated with the inflation tension the running threads are synchronized. Accordingly, the attractive force of the magnet is called Fz. Then it will be assume that movement in a horizontal (radial) direction and in an axial direction is not significant.

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If the rotating effect of a ring is neglected, the following equation is obtained as an equation of motion around a balance or compensation control of the ring:

mZ + CzZ + KzZ = Fz + Tz sinus U t (3)

_{where f} is the mass of the ring, f Z is the micro-displacement in the upward or downward direction of the ring from the balance sheet, Tz is the amplitude of the periodic external force in the direction of Z caused by the movement of the treated thread , and k) represents the yarn inflation angle speed.

In general, the attraction of a magnet is Fz, (when a proportional constant Az is called and an initial gap between the ring and the ring holder is called C), expressed by the following:

Fz = ^Az (4)

<£ -Z> ²

When equation (4) is developed according to Taylor's theorem , the linear part is substituted into equation (3) and the initial equilibrium is obtained

mZ + CzZ + KzZ = * + Tz sinus U) t (5)

where 2 Az / £ is a spring constant Kz corresponding to the Magnet corresponds to ..

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The solution according to Routh Hurwitz is applied to equation (1) (see A. Hurwitz, about the conditions, under which an equation has only Warleln with negative real parts, Mathem. Annular 46 (1895), 273 bis 280), where the following are the conditions under which this system becomes stable:

Cz> O (6)

^{2 ref}

y (7)

Corresponding to runs carried out according to the invention with reference to the ring according to the invention, the value of Cjz is not very large. However, its value is certain because of the pneumatic pressure around the ring letter. It is possible to easily satisfy the conditions of inequality (7) by calculating the speed of emission of the pressurized air, the intensity of magnetism, the weight of the ring and the distance of the gap between the ring holder and the ring. The experimental results in this regard are shown graphically in FIG.

When the ring is displaced from the point of stability and shifted in a direction where the gap between the ring and the ring holder becomes smaller, Z ^ O and Kz> 2 Az / £, whereby the conditions of inequality (7) are fulfilled.

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If the ring shifts in a direction where the gap £ becomes large, since Z \ O, "the conditions become the inequality (7) is fulfilled in the same way, the ring always being asymptotically stable in the vicinity of the equilibrium point or equilibrium point. In the case, that there is an external constraining force in equation (5), the stability is limited, since the norm of the external constraining force is equal to / τζ · sinus Wt / <_ Tz.

In the event that the decrement number (decreasing) CzZ = O, once the ring begins to swing up and down, that movement does not fall off. In fact, however, the (falling) decrement force exists, and like it a significant one Plays a role, is understood from the stability conditions of inequality (6).

In the embodiments according to the invention, the stability in the radial direction of the ring can be seen when - as mentioned above with reference to FIG
the restoring force is also increased. For this purpose, in the embodiment of the present invention, it is preferable to make the attractive areas of the magnets fixed on the ring and the ring holder the same (in the case of ring-shaped magnets, the width of the attractive areas in a radial direction) and also the centers of the Making magnets together. Accordingly, the

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Embodiments in which discontinuous magnets are arranged, the number of magnets is increased. In embodiments with continuous benign attraction areas, it is sufficient to count the number of steps of belt-like Increase magnetic poles.

In Fig.14 is the embodiment of an annular magnet shown in simplified form. The magnetic attraction area 30 of the ring holder 2 is in four stages in one radial direction provided, and the ring is composed of four magnetic rings 26, which the same Have width as the area of attraction, with non-magnetic rings 29 connecting them together. One recognizes from Test runs that the force Fr is also proportional to the displacement r.

When the equation of motion of the arrangement is sought, stability in a radial direction of the ring is through to check the same method as that of the aforementioned case of stability in an axial direction of a spindle, is the resulting equation:

· ♦ ·

mr + Crr + Krr + Fr = Tr sinus U / t (8)

when the equation (2) is substituted therein, holds

r "+ 21 r + i (Kr- ^BM ^ f) r = ^ sinus tV t (9) mm c dr m

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where r represents the displacement of the ring from the point where the ring is balanced at the central part of the ring holder , Crr represents the (decreasing) decrement force in a radial direction given by the relative speed to the ring as a result of the fluid jet emission in the radial direction, M represents the artificial magnetometric force, B represents a pro-

BM dS represents a proportional constant and __ ^ __ represents a spring

dr

constant in a radial direction caused by attraction force in an axial direction of the magnet Έϊ_ , and Tr represents the amplitude of the periodic external force in a radial direction caused when the threads to be treated slide the outer periphery of the ring touch.

As can be seen from Fig. 2, the common area S is:

(x - r) ² dx χ 4n

accordingly ff _ _ _{2 n} Ot ² applies,
dr

where <* is the radius of the cross-sectional area of a columnar Is the number of magnets, η is the number of magnets

j «
represents. When calculating __, however, the values are with

dr

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high order deleted as negligible. If this is substituted in equation (9), the following applies:

r ^# + ff. r + i (Kr + ^{2BM u} " ^/ _β Tr

mm c -

O m

where the values of Cr and (Kr +) are positive, and against the vibration of the radial direction of the ring in in the vicinity of the balance point, the ring does not fluctuate, but is always stable.

In order to increase the artificial compression spring constant Kr due to the static pressure of the air film generated on the side wall of the ring holder and on the side surface of the ring, it is possible to direct an air jet from the side wall of the ring holder against the side surface of the ring through nozzles 2 * emit, which are also shown in Fig.15. Then, since the artificial decrement constants Cr and Cz in the radial and axial directions of the ring, which are caused by the difference in the speed of the surface of the ring from the emitted air, etc., increase, the stability of the ring is further improved.

Accordingly, the twister according to the invention has a good holding effect on the ring without contact, and has a very good ring stability both in the radial and in the axial direction. This has also been checked theoretically, as mentioned above. Thus, yarns in the gap between

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the ring holder and the ring, and also the twisting and winding can be performed without breaking the twisted Made of yarn in a stable manner.

In order to explain this fact further, reference is made to the illustration in FIG. They are actually measured Values of the spring constants in axial and radial directions of the ring shown. The results were obtained using a 0.5 kg ring and twelve magnets with residual magnetism of 13,000 gauss measured using a device of the type shown in Figure 3. On the ordinate of the diagram are the spring constant in the axial direction

2Az
tung Kz - (dashed lines) and the spring constant in the

radial direction Kr - 2n «< BM / £, (solid lines) plotted. On the abscissa of the diagram is the pressure P applied to the emitted air. When the trend of Fig. 16 is established, with respect to the spring constant in the radial direction, if magnets are not used, the value of the constant increases with increasing pneumatic pressure. Of the This is because the amount of expelled air is in the gap between the side wall of the ring holder and the side face of the ring enters and the pressure of the air film on that part increases. When using magnets the spring constant increases further in the radial direction due to the effect of the centripetal action of the Magnets compared to not using magnets.

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The spring constant in the axial direction increases, when using magnets compared to when not using magnets. When magnets are not used even if the pneumatic pressure is increased, the constant does not change significantly. However, if you can When using magnets, the constant suddenly increases as the pneumatic pressure increases. This is done in Considered as the amount of beating of the ring drops around the attraction of the magnets, and the whole pneumatic pressure in the gap between the bottom surface of the ring and the annular base of the holder increases.

When the ring according to the invention is used, it is - as mentioned above - not at all necessary to have a release ring or to use runners for yarn twisting and winding as has heretofore been used. That's why it is not only possible to increase the yarn treatment speed many times over, but also in terms of noise, the vibration and the preservation very great advantages are achieved.

The method for holding the ring are so far in the mentioned embodiments of the type of a Auflagerdruckes or Wi derlagerdruckes, from the point of view of the shape of the camp. The basic principles of this invention can also be applied to \ chs and slide bearings. If namely a Ring is held at a central point of the ring holder by air and at the same time a force of attraction as a result

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Magnetism is added in the opposite direction, the repulsion by the flux is the magnetic Force of attraction balanced in the radial direction of the ring. Therefore, there is a point of stability at which essentially no force is added to the ring is created. As a result, the stability in the radial direction of the ring is drastic improved. Furthermore, in the axial direction of the ring, it is possible to hold the ring stably by having the Centripetal force in the axial direction F £ generated by the attractive force caused in the radial direction of the magnet Fr_, balances with the weight of the ring.

Fig.17 is an embodiment of this type, which is composed consists of a ring holder 2, which has an air chamber 3 on its inside and a coil 22 for inserting a Flux, for example pressurized air, has. The ring holder 2 has an elongated cross-sectional area. A ring 6 made of magnetic material has an outer diameter that is slightly smaller than the inner diameter of the ring holder 2. The inner wall 31 of the ring holder is cylindrical. There are air nozzles 8 on its circumference intended. In the ring holder, the coil 22 is wound in the circumferential direction. In Fig.17, (e) is a magnetic material and (d) a non-magnetic material. When an electric current is sent into the coil it becomes a Magnetic current formed as shown by the dash-dotted lines in Fig.18.

409810/0888

In this embodiment, the principle by which the ring is stabilized is shown as follows:

When pressurized air is emitted from the air nozzles 8 and the inner side wall of the ring holder, the repulsion due to the static pressure and dynamic pressure of the air with respect to the magnetic attraction force caused by a magnetic current is canceled. If the force in the radial direction of the ring, which works on the ring holder 2 and the ring 6, is shown schematically, its effect is shown in Fig.19. The ring 6 is held against the ring holder by the effects of an artificial compression spring constant Kr due to the total pneumatic pressure, an artificial length spring constant kr due to the magnetic attraction force and an artificial decrement coefficient Cr_ which is determined by the difference in the relative speed of the ring from the surrounding atmosphere in the radial direction is caused. The external force which mainly acts on such a system is the periodic horizontal force Tr sinus ttft, which is caused by the sliding contact rotation of the threads 10, where Tr is the amplitude of the divided force in the radial direction of the ring, which is caused by the yarn tension which is the inflation angular velocity of the threads.

Accordingly, if the attractive force of the magnets is denoted by Fr and it is assumed that the movement in the horizontal

409810/0888 - 32 -

len direction and the axial direction of the ring not achieved is, the equation of the movement around the balance point of the ring becomes the following equation obtain:

+ Crx + Krx = Fr + Tr sinus lO t (11)

where m is the mass of the ring and χ is a very small displacement is out of the equalization position of the ring (center point of the ring holder). In general, the attraction is the magnetic force Fr; when the constant of proportionality is denoted Ar and the gap between the ring and the ring holder £> is called; the following:

Fr- ^

" ² < ¹² >

When equation (12) is developed according to Taylor's theorem, the linear part in equation (11) is substituted and examines the initial equilibrium;

mx + Crx + Krx = ^{2 Ar} χ + Tr sinus ty t (13)

e ³

where 2Ar / fj corresponds to the constant kr due to the attraction magnets. When Routh Hurwitz's discrimination is applied to equation (13), the conditions under which this system becomes stable are as follows: Cr ) 0 (14)

Kr - ^{2 Ar} > 0 (15)

6 ³

409810/0888 -33-

According to the experiments carried out relating to the invention Ring, the value of Cr is not so great, but its sign is positive. It is also easily possible to meet the conditions of inequality (15) by considering the jet velocity of the compressed air, the intensity of magnetism, the weight of the ring and the gap between the ring holder and the ring. The related The experimental result is shown in the illustration in Fig. 1, as mentioned above.

If the ring deviates from the stability point (compensation point) and the gap &. between the ring and the ring holder goes in a direction where it gets smaller, χ ^ O and

Kr y 2Ar / £ to meet the conditions of inequality (15)

fulfill when £ goes in the direction where it gets bigger, x ^ O. Therefore the conditions of inequality (15) similarly met. The ring is always asymptotically stable in the vicinity of the compensation point. When a external constraining force exists, the stability is limited, since the norm of the external constraining force is:

Tr sinus * O t / "^ Tr

Further, at the time of rotation of the ring, the aforementioned stability conditions are due to a gyro effect reinforced.

When the stability of the ring in the axial direction of the spindle is expressed in this way according to FIG

409810/0888 -34-

is when the change ratio of the common area of the magnetic attraction areas with respect to the Displacement is increased, an increase in the restoring force is caused ^. To this end it is understandable the number of the steps of the belt-like magnetic poles in the axial direction to increase in this embodiment, as in the embodiment of Fig.14. As mentioned above, it is also known that the force Fz ^ is proportional to the displacement £.

If accordingly, as shown in Fig. 18, an electric Current is sent into the coil 22, a magnetic current, as shown by the chain lines, is between the ring holder 2 and the ring 6, and when the ring 6 deviates in the axial direction, a restoring force becomes caused according to the aforementioned principle.

In order to maintain stability in the axial direction of the ring by the method of the aforementioned case of stability in the To confirm the radial direction when searching for the equation of motion of this system, the following applies:

mz + Czz + Fz = Tz sinus UJt (16)

z "+ ^ ζ + BM ² ds z = ^ sinus U) t (17)

^m ΪΓ ~ di ^m

where ζ represents the displacement of the ring from the point of compensation of the weight of the ring and the magnetic force Fz ^ in the axial direction, Czz is the (decreasing) decrement force in the axial direction, which is caused by the frictional force as a result of the

409810/0888 - ³⁵ "

Thrust of the fluid in the axial direction, M is the artificial magnetometric force, B is a constant of proportionality and Tz _- is the amplitude of the periodic external force in the direction j2 caused by the movement of the treated filaments.

While the common area S, as can be seen from FIG. 2 , is S = 2 Tf r (h - z), if the outer diameter and the length in the axial direction are correspondingly designated by x_ and h, then ds / dz = 2 ~ 7 for r, and therefore equation (17) becomes as follows:

cz; ₊ 2-rfr bm ² _{z =} τζ _sinug

m mm

where the values of Cz ^ and B are positive. Accordingly, will the ring always in the vicinity of the compensation point against the swinging in the up and down direction of the ring stable.

So the yarn twisting device of this embodiment is fixed in its holder, and the stability in the radial and axial directions of the ring is very good. Therefore it is possible to set the ring completely in the distance. As shown in Fig.17, it is also possible to twist and wind the yarn through the Gap between the ring holder and the rig

- 36 409810/0888

Accordingly, there is absolutely no need to have one To use runners for twine twisting and winding, as has been the case up to now, and it is not only possible increasing the speed of treatment of the threads by several factors, but also getting very great benefits regarding the noise, the swing and the preservation.

In this version, however, the form must also be carried out during the tacking of the thread or -einhakens this can be carried out by removing the ring 6 from the ring holder 2. Therefore tacking continuously running threads is a bit difficult.

It is therefore preferred to provide a vertical slot in one place on the ring holder. By this makeshift the hooking of continuously running threads is easy to guarantee. An example of winding a spool with a split ring holder is shown in FIGS. 20 a) to b). An annular electromagnet is made in two stages is formed and a spool 22 is folded back at the slit portion. As a method of forming a holder 17 and a ring 6 of the annular electromagnet are then the examples in Figures 20 b) and c) are provided. The embodiment shown in Fig.20 c) is in the stability better in the axial direction of the ring. In FIGS. 20 b) and c) there is the inner wall of the holder 32 and the outer housing 34 made of non-magnetic material.

40981 0/0888

It is also possible to form an annular electromagnet with a slot by inserting the into the FIGS. 21 a) and b) are used. In these embodiments, a plurality of are columnar Electromagnet 25 against the axial direction of the ring holder between the outer walls 17, 17 'of the holder below the same Spaced apart, and the polarities of the corresponding magnets are evenly up and down made. Therefore, a magnetic field is formed between the outer walls 17 and 17 'of the holder, "which in the circumferential direction is continuous.

In Figures 20 and 21, the inner wall of the holder 32 is non-magnetic and bounces off the attraction surface the end of the outer wall of the holder 17 before. This enables the formation of the stability point in Fig.l to be similar to allow the creation of the magnets in concave positions in the embodiments of FIGS.

Another alternative embodiment of the invention is shown in FIG. In the embodiment of Fig.17 takes the cradle tension, as the ring rotates when the yarn is wound, and the yarn can be wound with a high degree of twist. However, if it is not necessary, a To obtain a high number of twists, the ring can be made to stand still. As shown in Fig. 22, stands the ring is still and is held at a distance when the magnetic attraction surface 30 in the circumferential direction of a

409810/0888 ~ ³⁸ ~

Holder is made discontinuous and the magnetic surface e of the corresponding ring at the same distance is arranged discontinuously, as can be seen from the Roters equation above.

It is also in the device of this embodiment to to enable thread hooking of continuously running threads, preferably a vertical slot in one part of the ring holder to be provided.

In the embodiment shown above, the magnetic attraction direction is the axial direction or the radial direction only the ring holder. However, it is also possible to keep the ring in a stable state in that one creates an L-shaped ring surface on the ring holder and air from the side wall and the ring-shaped base of the Ring holder simultaneously ejects that a negative force in the axial and radial directions of the Ring holder applies.

Of course, it is possible to design the ring-shaped surface to run at an angle, as in Figures 23 a) or b) is shown or shaped as a curved surface or provided in another shape.

In the yarn twisting device according to the invention, with respect to a device in which a ring rotates freely, it is possible to to provide a hook 33 on a ring 6, as in FIG

409810/0888 ~ ³⁹

Fig. 24 is shown and the yarn twisting over this hook 33 to perform.

If such a hook is provided, it is preferred Provide at least two hooks at regular intervals to balance the ring. It is possible to use a Use detachment hooks after the working hook has been rubbed off by friction with the thread. In fact it is possible to change hooks one after the other or in alternating sequence. When all the hooks on the ring have rubbed off they can be exchanged together with the ring.

Accordingly, hook replacement in the industrial plant can be performed in run in one place. The work required to change the ring and the hooks can therefore be reduced to 1/8 can be shortened by 1/3 of the work that is necessary to replace the traveler and to replace the ring, when using a conventional running system.

If, in turn, with the invention the radius of the ring becomes large and the weight of the ring increases, it is possible to provide auxiliary air ^{nozzles 8 1} and, as shown in FIG. 25, to hold the pressure force of the ring by means of compressed air.

Of course, in a further alternative embodiment it is possible to bring a runner into engagement with a ring, which is rotatably mounted at a distance in the device according to the invention in order to twist and unwind the yarn

409810/0888 '~ ^4o "

- 4ο -

to lead. Since the ring in this case does not touch an external material for the spacer, it is possible to To rotate the ring by itself at a speed about the same as the speed of rotation of the runner by frictional force between the ring and the runner. Accordingly, it is possible to make the difference in relative speed to make almost zero between the ring and the runner. As a result, it becomes possible to remove the excess abrasion of the rotor and to reduce the service life considerably. There again with the use of the runner If there is no initial impact with a spool rotating at high speed, it is possible that To wind yarn around the bobbin, and one gets a great advantage with the half-way yarn hooking system of the twine and twine -winder.

The inertia of the ring, the air resistance, acts on the rotating ring of the yarn twisting device of the invention and the inflation tension as a load or load, except that no other force is in effect.

Because the ring is the field of magnetic flux because of its rotation does not cross alone, the magnetic force does not cause any resistance. As soon as the ring is accordingly regular run begins, the torque of F = I · 0 is effective on the ring (I: moment of inertia of the entire rotating Ring). If, however, the ring is driven regularly, only a force to maintain the rotation is required (namely

409810/0888 - 41 -

borrowed mainly for energy loss due to air resistance) . It is accordingly possible to drastically lower the tension of the threads during normal operation, i.e. it is possible to determine the number of thread turns, which are communicated to the yarn to increase and to wind the yarn at a high speed. If an ordinary Magnetic material is used as a ring, this is preferable because the manufacture is simplified and the cost are low, and it is possible to use an annular permanent magnet. However, if - as with the so-called Embodiment shown - a spool on the ring holder is provided and the ring is composed of an ordinary magnetic material, the setting is the Magnetic force is easy, and such a shape is extremely preferable.

In the case of the yarn twisting device according to the invention a device in which the ring rotates, after stopping the L keeps rotating at a high speed Ring if the electrical current running in the coil is left intact and the amount of air supplied is reduced, the rotating ring stops almost immediately (in the case of 6000 rpm, the ring stops within a Second on). This combination is therefore very economical in terms of operation.

In the yarn twisting device according to the invention it is again possible to use the number U.p.m. of the ring by adjusting

409810 / Q888 -42-

the inclination of the nozzles (the angle at which the air is expelled), the pneumatic pressure, the electrical pressure to control the current running in the coil and the weight of the rotating ring. It is possible to use the relative speed to reduce the yarn to that of the ring and thereby lower the winding tension. Increases the twist number and an improvement in the yarn quality follow from this.

Since only air and magnetic force in the case of the invention When using the device, lubricants are not necessary in some parts and the device avoids this Eating, staining or burning by the lubricant of the rotor and damage as a result of burning as well as personnel Injuries as a result of the runner breaking or flying off.

The present invention is not limited to that described above Embodiment limited, but there are also various other examples possible by using a method to form an annular surface of a ring holder with the arrangement of magnets as shown in Fig. 8, combined.

In the following, the invention is explained in detail with reference to examples.

- 43 409810/0888

example 1

A Garnzwirnvoijichtung, the ring and ring holder of which the in 3 have been used in winding a yarn around a bobbin.

The ring had an outer diameter of 200 mm, an inner diameter of 150 mm and a side wall height of 20 mm and a weight of 1.5 kg. The ring holder has an outside wall inside diameter (into which the ring was entered) of 200.7 mm, and the height of its outer wall was 20 mm. The ring and the ring holder were made of brass, which is a non-magnetic substance. 45 nozzles were provided on the ring holder, each with a diameter of 0.7 mm through which air with an absolute pressure of

3 kg / cm was supplied. Six columnar permanent magnets, each of which had a magnetic remanence of 13.0 KG (Gauss, unit of magnetic force) and a diameter of 7 mm and a length of 10 mm, were provided on the ring or ring holder so that they were mutually exclusive would attract.

When using this device, a yarn was wound around a bobbin at a yarn speed of 3000 m / min, a spindle U.p.m. of 19,000 and a winding tension of 50 g. The ring did not touch or rotate with the ring holder, but became stable in a floating state held and wound the yarn in a stable state. The wound yarn was with a twist of

6.3 T / m twisted. - 44 -

409810/0888

Example 2

A twister whose ring and ring holder had the shapes shown in Fig of yarn around a bobbin.

The ring would have an outer diameter of 133.0 mm and a height of 15 mm, and the ring holder had an outer wall inner diameter of 133.2 mm. The height of its outer wall was 15 mm. Magnets representing parts of the ring holder and tightening parts of the ring were made of steel, and the remainder of both the ring holder and of the ring were made of brass. 32 nozzles, each 0.7 mm in diameter, were placed on the Ring holder provided through which air with an absolute

2
pressure of 3 kg / cm was supplied. The electromagnets were set so that their permanence was 13.0 KG.

Using this device, a yarn was wound around a bobbin at a yarn speed of 600 m / min and a spindle above sea level. of 10,000. Although the The winding tension varied in the range of 20 to 40 g, the ring did not touch the ring holder but became stable suspended while twisting or whirling when the yarn is puffed up. The wound yarn was Twisted at 17 T / m.

- 45 409810/0888

Example 3

The same ring and ring holder as in Example 1 were used. However, the magnets were not intended, but the ring was held in suspension by air alone.

Using this device, yarn was wound around a bobbin at a yarn speed of 600 m / min and a Spinde1-U.p.m. of 10,000. The ring began, however when the yarn speed increased, and when the rotating speed of the ring was about 500 r.p.m. reached, the ring began to spin eccentrically, struck the holder, and the thread broke. As a result, it wasn't possible to wind the thread around the bobbin until it is fully loaded.

Example 4

The same ring and ring holder as in Example 1 were used. The magnets were not provided, however, and 45 nozzles with it each with a diameter of 0.7 mm were newly provided on the side wall of the ring holder, through which air with

2
was supplied to an absolute pressure of 3 kg / cm.

Using this device, yarn was wound around a bobbin at a yarn speed of 600 m / min and a spindle-overhead m. of 10,000. However, than the number of revolutions per minute of the ring reached 1000 to 1200 began to twirl or rotate the ring eccentrically impacted the side wall of the ring holder and yarn breakage occurred.

409810 / 088S ~ ⁴⁶ ~

As a result, it was not possible to wind the yarn around the bobbin until it was fully loaded.

- 47 409810/0888

Claims (31)

23A1 609 "47" claims 1.) jYarn twisting device with a spindle for carrying a Spool for winding the yarn, characterized by a ring arranged to guide the yarn to the bobbin, which is in the substantially surrounds the spindle, a likewise substantially surrounding the spindle ring holder, which is generally axially to the spindle moved backwards and forwards, the ring holder having a fluid chamber, a ring-shaped surface for loosely fastening the ring and an ejector for compressed fluid by the annular surface of the fluid chamber, and by means for applying a Magnetic force by which the ring is attracted against the ring holder so that the ring is at a stable distance State is held in balance with the magnetic force, the forces being metered or the compressed fluid are attributed. 2.) Device according to claim 1, characterized gekennzerhnet that the annular surface of the ring holder from an inner surface with a circular side wall and a annular base is composed, which has a concave L-shaped cross section. 3.) Device according to claim 2, characterized in that the Fluid nozzles on the annular base for emission - 18 40 9810 / 08.8 8 compressed fluid are provided axially to the ring holder and a magnetic force of attraction between the ring and the ring holder is exerted in an axial direction from the ring holder. 4.) Device according to claim 2, characterized in that the fluid nozzles on the inner surface of the circular Sidewall and the annular base are provided to flow compressed fluid in axial and radial directions Directions to emit ring holder, and a magnetic attraction force between the ring and the ring holder axially is exercised to the ring holder. 5.) Device according to claim 2, characterized in that the fluid nozzles on the inner surface of the circular Rare wall and the ring-shaped base are provided and an attractive force between the ring and the ring holder is exerted radially by the ring holder. 6.) Device according to claim 2, characterized in that the fluid nozzles are vorgeaäien on the inner surface of the circular side wall and the annular base and a magnetic force of attraction is exerted by the ring and the ring holder in both the axial and radial directions of the ring holder. 7.) Device according to claim 1, characterized in that the ring-shaped surface of the ring holder consists of a circular 4 09810/0888 -49- shaped inner wall of the ring holder is composed and a magnetic attraction force between the ring and the ring holder is exerted radially from the ring holder. 8.) Device according to claim 1, characterized in that the annular surface of the ring holder is assembled on an annular upper plane of the ring holder and a magnetic attraction force between the ring and the ring holder is exerted axially from the ring holder. 9.) Device according to claim 1, characterized in that the annular surface of the ring holder consists of an annular inclined upper level is composed. 10.) Device according to claim 1, characterized in that the device for exerting magnetic forces is magnetic Has surfaces of attraction that are on both sides of the Ring and the ring holder are provided. 11.) Device according to claim 1, characterized in that the means for exciting the magnetic force has a magnetic attraction surface on each side of the ring and the ring holder is provided and that the other side is provided with a magnetic substance is. 12.) Device according to claim 10, characterized in that both magnetic attraction surfaces are continuous 409810/0888 -5ο- - 5ο are provided along the circumferential direction. 13.) Device according to claim 10, characterized in that both magnetic attraction surfaces are provided intermittently along the circumferential direction. 14.) Device according to claim 11, characterized in that the magnetic attraction surfaces and the magnetic Substance are provided continuously in the circumferential direction. 15.) Device according to claim 11, characterized in that a plurality of the magnetic attraction surfaces intermittently are provided along the circumferential direction and that the magnetic substance is continuous in the Circumferential direction is provided. 16.) Device according to claim 11, characterized in that a plurality of the magnetic attraction surfaces and a plurality of magnetic substances are intermittently provided in the circumferential direction. 17.) Device according to claim 1, characterized in that the cfeß Device for exciting the magnetic force is provided directly on at least the ring or the ring holder. 18.) Device according to claim 1, characterized in that the device for exciting the magnetic field indirectly on rain- 409810/0888 -51- least the ring or the ring holder is provided by a magnet holder made of a non-magnetic material 19.) Device according to claim 1, characterized in that the fluid nozzles have a pressure chamber on the annular Have surface of the ring holder. 20.) Device according to claim 1, characterized in that the device for exciting the magnetic force on at least one side of the ring and the ring holder in one something deeper position from the annular surface is provided. 21.) Device according to claim 13, characterized in that the means for exciting the magnetic force a plurality of columnar permanent magnets, the magnetic poles of each magnet are arranged alternately in opposite directions and that one surface Each magnet touches a magnetic substance to create a line of magnetic force in a closed loop of the to bring opposite side magnet through the neighboring magnet. 22.) Device according to claim 10, characterized in that the magnetic attraction surfaces on both sides of the ring and the ring holder - essentially the same width to have. - 52 - 409810/0888 23.) Device according to claim 11, characterized in that the magnetic attraction surfaces and the magnetic substance have the same width. 24.) Device according to claim 11, characterized in that the device for exciting the magnetic force consists of a ring-shaped electromagnet in which an electric current along the circumferential direction in a ring-shaped holder of a magnetic substance is sent approximately in a U-shape in cross section and an open one Part of the ring-shaped electromagnet and the magnetic substance have the same width. 25.) Device according to claim 10, characterized in that more than two rounds of the magnetic attraction surfaces are provided on both sides of the ring and the ring holder. 26.) Device according to claim 1, characterized in that the device has more than two rounds of the magnetic attraction surfaces and the magnetic substance. 27.) Device according to claim 1, characterized in that the ring holder has a slot for the thread. 28.) Device according to claim 1, characterized in that the ring is supported for free rotation and has a hook has to guide the yarn. 409810/0888 -53 29.) Device according to claim 28, characterized in that at least two of the hooks are provided. 30.) Device according to claim 1, characterized in that the ring is carried for free rotation and a runner which is arranged to guide the yarn. 31.) Device according to one or more of the preceding claims for winding yarn onto a package or bundle with a yarn feed device to the package, characterized by a guide body disposed around the package around which the incoming yarn is placed around the pack, a spaced holder for the guide body, which interacts is driven along the package, the holder having a fluid ejector at the guide body has such that fluid forces are created to separate the guide body from the holder, and by a magnetic device between the guide body and the holder for developing magnetic forces is effective, which are opposite to the flux forces. 409810/0888 Read on