CS223629B1 - Facility for friction spinning with open end - Google Patents

Abstract

The invention relates to an improvement to an open-end friction-spinning machine having two rotary bodies (13, 14) which are mounted closely next to one another and are equipped with a frictional surface and between which is formed a gap (21) merging into a neck. The neck forms the narrowest point of the gap. At least one rotary body (13, 14) is equipped with a suction zone (43) in the region of the gap (21). A yarn draw-off device (4) serves for drawing off the yarn, whilst at the same time preventing any twisting. In order essentially to suppress slip between the forming yarn (55) and the frictional surfaces of the rotary bodies (13, 14), there is provided correspondingly in the part of the rotary bodies (13, 14) facing the yarn draw-off device (4) at least one circumferential groove (27, 28), in which a friction-supporting surface (29) formed on a carrier and projecting with its active part into the path of yarn (55) forming in the gap (21) is closely arranged perpendicularly to the axis (22) of the neck of the gap (21), the movement of the frictional surfaces (19, 20) of the rotary bodies (13, 14) and of the friction-supporting surface (29) of the carrier (30) taking place around the circumference of the yarn (55). <IMAGE>

Description

(54) Open end friction spinning equipment

The invention relates to an improvement of an open-end friction spinning device comprising two side-by-side rotating rotary bodies provided with a friction surface between which a slot extends into the throat forming a narrowest slot, at least one of which is provided in the slot region a suction zone, and a yarn draw-off device to prevent twisting.

SUMMARY OF THE INVENTION It is an object of the invention to substantially reduce the slip between the formed yarn and the friction surfaces of the rotary bodies.

According to the invention, at least one circumferential groove (27, 28) is provided on the two rotary bodies in the part of the rotating bodies (13, 14) facing the exhaust device (4), which is closely connected to the friction surface (29), yarn paths (55) formed in the slot provided on the carrier (30), perpendicular to the axis (22) of the throat of the slot (21), wherein the movement of the friction surfaces (19, 20) of the rotating bodies (13, 14) and the friction surfaces (29) 1) of the carrier (30) is oriented around the yarn (55).

The invention relates to a device for frictional open-end spinning, comprising a first, two Lead itself tightly storing ^and rotating rotéční body having a friction surface, between which a gap is formed passing into the throat forming the narrowest point of the slot, and nothing ^hertz drum · ^ is ^{H f p} oz rikční erforovan ^pL oc ^h and ^y stu ^p U is of the slots ^{Y, Pr} ivrácené opener mechanism. The second, non-perforated drum is provided with a structural surface.

Variants of spinning devices according to the above-mentioned basic principles are also known. According to a variant passes after ^de l štěrbln ^yp rota.žený ^straight portion, exposed ^{p s} of both stages of the drafting system arranged on one side of the suction drum, the longitudinal axis Vrbina. This ^bi n ^N ter ^s nalétávap of Ojeda. nocovacího device arranged above the drums, individual fibers which is taken up on a ^p Ra ^d Aný routine or ^BC generated VLA membered ^to be stranded together in the formation of the core yarn, towing rollers disposed on the opposite side of the drum. The core of the yarn is formed by the fibers of the yarn and the yarn envelope by the individual fibers.

e ^p o ^dl NAU to another variant ^{b y} UBN umfctěno least one stretch mechanism which supplies the base stretched roving roving extending longitudinally slit. In this case, the fibers of the feed yarn form the wrapper and the fibers of the base yarn form the core of the core yarn.

The number of twists inserted into the yarn depends on the friction transmission between the diameter of the yarn formed between the friction surfaces and the diameter of the drums. . Since the yarn diameter is many times smaller than the drum diameter, it is appropriate. the high peripheral speed of the drums is relatively low, which is a certain advantage of this spinning principle due to the high speeds of the spinning rotor of the open-end spinning unit.

However, said friction spinning systems have the disadvantage of reducing their efficiency. Among the yarn formation -a suction drums with considerable ^slippage, so ^p ro ^{p d} ocílern Oza ^d ylated twist is necessary to multiply increase the speed of suction drums against theoretical Hlosta r ^ ^{1. determined} en ^{e r} ečeným evoáem ^straight between the yarn and the circumference of the drum. A slit defined rikčmm ^{f i} ^ o ^ am ^ ter ^{to E} in contact with the open end of the yarn, from the narrowest gap opens too fast, so that the action of these surfaces for rolling of the yarn is not sufficient ⁱⁿ čln.n ^Star. A significant growth ^{p N} N o ^p ro ^to mob between the ^y molded threads and friction surfaces leads to high contact heating of the fiber material, so that the twist is heat-fixed to the yarn, which is disadvantageous in terms of structure in ^YPR reach the desired length ^{e p} rize and its nástédné ^h oz financing ^^ ^ ^P of manufacture ^for ice to tkanrny. This factor is significant zejména- ^p from ^p ri ^s Rácová the thermoplastic fibers.

Because of these disadvantages has friction spinning system with - an open end substantially greater than the productivity of the known rotors ^E system ^{since O} THER vol ^YS OC ^and it is hmitováno problems of slippage of the yarn during the spinning process.

Despite the above disadvantages are systems ^{P dilution} of the friction open-end ^P ro some fibrous materials suitable than rotor systems. Nes ^p arable above ^h o ^d OU ^y hundredth friction spinning is relatively low speed of the rotating or orbiting elements ^p racuj ^I C ^I C ^h theoretically from ^ KLA ^ga simple transfer between the yarns of a small diameter and the friction surfaces provided on the order of substantially greater diameter rotary carriers of these friction surfaces.

Olkolem zďokonatérn current invention is a device for frictional open-end spinning, in order to substantially reduce slippage threshold ^{P 1} generated .rízí rikčním ^{and f pl} oc ^h ami rotating bodies without substantial interference from an ^AK la ^¹H n ^{d p} of the US ^series M zahzení ^P ro ^f rikční openend, specified in paragraph 1 of this application.

Those conditions substantially meets the zarizern ^{p dl} ev ^{Y is N,} climb tm that MSTI Company ^C that MCH ^ ^ o ^ returned Aho ^ u ^ tetroj on both of the rotary body adapted sho N. E. ales ^{d p} o ^N is ^d at a ^b a ^d o ^{and d} r ^and Item; which closely ^p roc ^h-i of ^Walking rn ^and friction ^pl OCHA ^extending active portion of the path of the yarn produced in a slot provided on a carrier moving along a closed path perpendicular to the axis of the neck of the slot, whereby movement of the friction ^p loch ^rota-border têtes rikční and ^{f p y} toch carrier is oriented around the circumference of the yarn.

According to a preferred embodiment, the support is formed by a disk arranged on the drive shaft parallel to the axis of the throat.

It is also possible that the support friction surface is provided on a carrier formed by an endless belt guided on a set of guide rollers, at least one of which is a driving roller. In the case of a plurality of endless belts, the matching rollers can be provided on a common shaft.

Active part for ERN ^{p p e f} rikční Loch ^y is the part of the surface which comes into contact. with the yarn formed in the slot, respectively. over which the formed yarn rolls. In the case of discs as carriers of the friction surfaces, this is the place where the disc is placed against the path of the yarn produced.

The position of the active portions of the friction surfaces with respect to the throat axis is reflected specifically in the nature of the spun yarn. Mož.n ^E r ^{of the} Zn ^Star Tec variants that ^{p h kt} Ota ns, is chosen with respect to the desired pattern yarn.

According to a first variant, the active portions of the frictional surfaces are equidistant from the throat axis. In a second variant of part vzdátenost aktívrnch ^Walking myc ^{HF to} R oc ^h ect ^pl of ^d-axis In the direction ^{of P} u ^p by ^Hyb rize stone chips ^ ^ no variation ^with U is. ^P o le ^{d d} and β ^LSI ch va223629

at least the active portion of one friction abutment surface extends through the throat axis or extends below or above the throat axis.

The rotating bodies are either cylindrical bodies or conical bodies or cylindrical bodies with slight convergence in the direction of yarn movement through the slit.

There is also a variant of one cylindrical rotary body and the other conical one.

The longitudinal axes of the rotary bodies are either parallel or converge in the yarn withdrawal direction.

The functional surface of the rotating bodies is preferably microstructurally roughened in a known manner, for example by sanding, etching, plasma or the like. The friction abutment surfaces can be roughened micro- or macrostructurally. Parts of the friction surfaces located between the support and friction surfaces may also have the same roughening.

An essential element of improving the open-end friction spinning is that three frictional surfaces moving in the same direction on the yarn formed in the slot act at three different points in its circumference, thereby producing advantageous friction ratios reducing the yarn slippage between these friction surfaces to a minimum. When the yarn is being rinsed out, the already mentioned thermal fixation of the twist does not occur because the contact temperature of the rolling surfaces is negligible.

As a consequence of the advantageous friction ratios between the spun yarn and the friction surfaces, the speed of these surfaces is essentially in agreement with the theoretical speed, respectively. at the speed necessary to insert the theoretical number of twists into the open end of the yarn, whereby any slight slip at the desired peripheral speeds of the friction surfaces is negligible. This factor positively affects production efficiency over known open end spinning systems.

It is advantageous to design rotary bodies with a suction zone arranged on only one rotary body. In this case, the power input of the power to generate a vacuum on the perforated frictional surface to maintain the fibers overcoming the centrifugal force to which the fibers are subjected to the frictional surface can be relatively low since the rotational body speed does not need to be increased to compensate for slippages. The overall power input for creating an air mode in the device according to the invention is reduced to a minimum compared to the existing concept of the open-end friction spinning device, which requires a relatively high power input to produce process air.

Since the yarn is twisted from slippage, it positively affects the yarn produced by substantially better uniformity of the yarn structure over the yarns produced on the prior art devices.

Natural, chemical fibers and, optionally, mixtures thereof including glass fibers, asbestos fibers and the like, from fine fibers to high coarse fibers, irrespective of the length of the staple, conventional cotton and wool lengths, can be processed with the apparatus of the invention. The device is easy to operate and the piecing process is relatively simple and fast.

The yarn breakage of the spun yarn is minimal because the yarn is not affected by the relatively high spinning tension that occurs in the rotor systems. The tension in the axis of the spun yarn depends only on the friction forces between the yarn and the friction surfaces.

The yarn produced on the machine according to the invention is usually of medium and coarse fineness. Its structure is similar to classic yarn. The yarn is uniform and universally applicable. In view of the uniformity of the yarn, it is preferable for the fibers to be fed into the slot through the friction surface n, and which fibers are fed from several opener devices.

For example, the device according to the invention can advantageously be used on spinning devices which are the subject of prior art DT-OS 2,449,583 and DT-OS 2,823,248.

1 is a front view, FIG. 2 is a side view, FIG. 3 shows a detail of the spinning device in a side view, FIG. 4 is a section along the line IV-IV of FIG. Fig. 3, Fig. 5 a section along the plane V-V of Fig. 3, Figs. 6 to 8 various illustrations of macrostructural roughening of the frictional surfaces, in partial axial section; Fig. 9 a variant of conical rotary bodies and discs of different diameters Fig. 10 shows a variant of the discs approaching the axis of the slot throat, viewed in the direction of arrow A, Fig. 11 shows a variant of the position of the disc at the level of the axis of the slot throat viewed in the direction of arrow A and Fig. 12 discs above the level of the slot throat axis, viewed in the direction of arrow A.

The device according to the invention is shown schematically in FIGS. 1 to 3 as a spinning unit, which consists of an opening device 1 provided in the body 2, a spinning device 3 itself, an extraction device 4 and a winding device 5. These devices are mounted on a frame (not shown). machinery.

The functional members of the opener device are substantially the same elements used in similar devices on an open-end spinning unit with a spinning rotor, with the main elements being a feed thickening tube 6, a combing roller 7 with spikes 8 housed in the cavity 9 of the body 2 and transport channel 10.

The pickup roller 7 is associated with a feed device (not shown), which usually consists of a pair of pickup rollers, at least one of which is driven, located between the feed densification tube 6 and the pickup roller 7.

In the exemplary embodiment к ojednocova223629 sweetening device 1 is assigned the next opener Ostrom 1 'whose rvky ^p, identical elements ojednocovamho organ 1 are ^marked en Ostrof ^y and ^p'. The ^extension rollers ⁷ , 7 ', the direction of rotation of which is shown by the arrow 11, are mounted on the shaft 12.

Spinning ^ 3 is three in a ^{row yl} eno ^E has two side by side tightly but without contact, are arranged rotary bodies 13, 14 provided on hnamch hndehch ¹⁵ 1.6. ^R rotates ^thee forest 13, 14 formed in the exemplary embodiment, cylindrical drum having a consistent direction of rotation of Zn ^and Zorn ^currency br. ^Pk am ^{and 17} ϋδ.

Between the rotating body 13, 14 whose lateral surface frictional tvoM ^I oc ^{pl hy 19, 29,} a slot 21, passing into the throat forming the narrowest point of the gap through which the axis

22nd Friction surface 19 to which are abutted into ^{py y} outpu ^LEGAL kan-s ^10, W *, is moved into the slot 21 while the second friction surface 20 in a direction out of the slot.

The exhaust device 4 is formed by rollers

23, 24, the direction of rotation of which is shown by the arrows ^k and ^{i, 25,} 28.

In the part of the rotary bodies 13, 14 facing the exhaust device 4, identical circumferential grooves 27, 28 are provided in the two rotary bodies, between which they engage tightly but without touching the abutment friction surface 29 provided on the carriers 30 moving along a closed path perpendicular to the axis 22, whereby the ^{p Hyb} írikCmh ^pl oc ^h 3.3,14 rotary body and friction surfaces 2S carrier 30 is oriented around the circumference of the yarn. In the exemplary embodiment, support 39 is formed disc 31 arranged on the drive shaft 32, parallel to the axis 22. The drive shaft 16 is stored in ^{L and Ka} Oz c ^h З ³ З ^{4, H on} C ⁱ h ^{l 15} de ^{of manufacture} in the mortar bed ^ka c ^{h 35} and ^{h 32} in NaCl hndel ložmk h ^ ^{33, 37,} at ^p ravenýc ^h, not shown Step ^E m frame. On this frame also by known means not shown opener mounted ^{on machines I1} spinning device 3, the draw-off device 4 and the winding ústrop S.

The drive of these functional nodes of the spinning unit is effected by gears (not shown) from the machine drive (not shown).

In the cavity of the cylindrical part 13a of the rotary body 13, whose friction surface 19 is provided with perforations ³⁸ at least in the outlet section of the conveying channels ^{10, 10} ' ^, a diaphragm 39 is provided whose inner space is connected by a tube 40 to a compressed air source not shown. ^also shows arrows ^{41, 42} (FIG. 3 a ^b y. 51. Aperture ³⁹ defines to perforate Frik ^No m ^{pl e} of ¹⁹ sucked zone 43. the cylindrical portion 13a of the rotating body 14 is not perforated.

Bearings ³⁵ hnamho Midea ¹⁵ rotačmho body 13 are arranged adjustably in the direction of the double arrow 44 for setting the throat width of the gap 21. Likewise the bearing 36, 37 of the shaft 32 is provided adjustably in the direction ^of ^ ru ojtté SIP ^{ky 45} for positioning discs 31 with respect to the axis 22 (FIG. 4).

Further provided is positionally adjustably aperture 39 in the cavity of the rotating body 13 in the direction of the double arrow 46 for setting the suction zone 43 relative to the position of the slot 21 (Fig. 51. The means for setting said position are described more neither ^ the shown ^since it is of conventional construction elements.

By placing the discs 31 resp. their friction abutment surfaces 29 relative to the axis 22 may be the same or different. In the former case the disc ³¹ in the same ^{e lke,} and in the second case they have different diameters. The friction abutment surfaces 29 are either smooth or have a rugged surface to increase the frictional properties with respect to the yarn produced. This surface can by ^T in ^yt Voren layer of the friction materiae example ^IKL and ^d considerable ^{CKY R} UB ^O S or Ferodo or may be roughened microstructurally, for example, sandblasting, etching, plasma spraying and the like., Or macrostructural such transverse splines 41 (Figs. 6], cross-grooving 48 (FIG. 7) or concentric grooving 49 (FIG. 8).

Between the spinning device 3, and an exhaust ^at St: swarm ^r M ⁴ is positioned known ^{E c} and ^{dl 50 p} řetrhů yarn that indicates the signaling yarn breakage and controlled by known means, not shown, such as an electromagnetic clutch of feeder device ojednocovacíc ^h organ 1 ¹ and NAV ^ ecto ^{at the} machine P.

Below each of the opener devices 1, ¹⁴ is a watering can ⁵¹ with a strand ⁵² .

^P arm ⁵² pnvách zhušťovarn ТтпЫт 6 into the singling 1. Individual fibers 33, combed eight combing roller tines 7 are accelerated and flung by centrifugal force into a transport ^AL kan at ^16, which .IV ^of p ^{and D, and} J ^s on the suction zone 43 of the rotating body 13, where they are trapped by the generated vacuum. In the same way on the frictional surface 19 is fed vUkna ^d o ^p ravmm boar ¹⁰ 'ojeCocovacího ^device; 1'.

Because the fibers are fed to the frictional surface 19 with a certain extended rearward ^p occurs on ^{the tet pl} axis ^Kp Ostu ^p n ^s overlap in his ^ en, so-called. Doubling, to form a uniform ^or peacock nky ⁵ 4. Přivátónto in ^pickle for en VME mfet ^p ovrchu rotating body 13 in the present example performs two ^E has dopravrnmi ^the anal ^{y 10, 10} ', to create the conditions for increasing - ^pl uniformity of the ^{N s} weight ^{p y} AVU ^No ink ^54th

The friction surface 19 carries the web 4 in the direction of the arrow 17 into the slot 21. Once the fibers have reached the edge of the intake zone ^{43, when they do not} pinch the iPod, they are ejected by centrifugal force in the slot 21 on the frictional surface 20 of the second rotary body 14. the surface 20, which moves in the slot in the opposite direction, carries the fibers out of the slot 21 in the direction of the arrow 13. Since the friction surface 20 does not exhibit a suction effect, the fibers are immediately thrown back by centrifugal force back to the first friction surface. 19, which are again attached ^{to the} treatment with ^p odHa at Ikontinuátoe for feeding a layer of fibers in a batt 54 and this frictional surface 19 are entrained back into the slot 21 to beyond the suction zone 43. the action is repeated, thereby cycling the fiber between friction surfaces 19, 20. If this fiber cycle ^is moved to the end ^{of the} yarn rotating in the slot By winding on both friction surfaces 19, 20, and drawn off by the take-off device 4, a continuously fed web of fibers 53 is formed into a new yarn 55.

The orientation of the fiber circulation in the wedge-shaped slot 21 can be changed by adjusting the position of the orifice 39 in the cavity of the rotary body 13 in the direction of the double arrow 46.

From cycle fiber yarn formation abbreviated in the first stage of rolling over the two friction surfaces 19, 20 in a second phase alternately on the two friction surfaces 19, 20 supporting the friction face 29 of disc 31, whereby twist inserted into the yarn is determined by the transfer between ^P r ^s m rem ^of rotational ^bodies es ^13, 14 and the diameter of the yarn 55 drawn off draw-off device 4 and wound in the winding device 5 on the spool 56. Since, as already stated, this conversion is relatively large is the ^{IP number} of ^{p and} turkey is very high and it is therefore possible to draw this yarn at a very high pulling speed.

Najpríklad to said device vypřádá yarn cm 8 [125 tex), the torsion rate -am 55 of ^{p p} m ^Arm 0.2 ⁵ (Ex 4 ^kt] having a fineness Td = 6 days (6.7 dtexj and length l ^ák ene in ^EXAMPLE mers ^{of 60} mm.

When the average ^{of C} Company ru rnho body ^13, D = ⁸⁰ mm and ^P Rumer ^p rize d = 1 / ---- ^ - = ^0.505 'Conversion of ^BC is between ^P rice

V ^{Z j0o} and the frictional surface of the rotary body 13 is given by i = 158.8. If the flow of fibrous matertélu g ^p c = - ^- = ³² and ^p vinegar ^and turkeys ^of the 0,2o ^{and at} z = from ³ am YCM ^{2PR 220} = ^{1 m,} the adjustment parameters of the spinning units of the following:

^p o r ^{y can} vaci Chlost ^p arm of ^15.65 m.. ¹ min, the circumferential speed of the rotating body 694 m.min ^-1, a n ^-1 = ²⁷⁶¹ ot.mm towing r ^y c ^h lost from ^{CMD 500} m.mm ^-1.

These exemplary parameters illustrated by the high performance of the spinning unit, with minimal slippage between the friction surfaces and yarn secured alternately · rolling of the forming yarn in the second stage of the spinning ^process has a two ^f ri ^CZK them ^p loc ^h ac ^h and ^{Walking ters f} rikční ^p lot.

The rotary bodies 13, 14 are formed as a cylindrical body portion (o ^b r. ¹ -5] ^b of the non-mechanical ^CODE (Fig. 9), or cylindrical with a slight taper, in the direction of the gap 21, the yarn movement.

In FIG. ^9, the Zn ^and Zorn ^currency contour and ^y ro ^{t N} N ^I C ^H ES ^{bodies 13, 14} in ^three ec ^hp řícných ^řezec ^ ¹³ H ¹³ N _to ^{13 m and 14} i, ¹⁴ JJ, ni · ¹⁴

In Fig. 9, 10 shows a detail of the slot 21 in axial view, in the direction of arrow A. The support friction surfaces 29 _b and 29 _UI 29n, gradually approaching in -smyslu yam 55, k 'axis 22 PRICE-MZ created the yarn 55 gradually moves closer to this axis.

According to the embodiment variant shown in FIG. ¹¹ is a ^{p p} osledrn ERN ^and friction ^p Tocha 29n at the level of the axis 22 and FIG. 12, above this axis.

The arrangement of FIG. 9 is advantageous for spinning fine yarns. The formed yarn 55 rolls in the slot 21 below the level of the axis 22, the slot tapering in the yarn withdrawal direction. In the disk 31 is produced by alternating yarn rolling on the two friction surfaces 19, 20 and supporting the friction ^{pl e 29 f} em ^PRICE zumjnn ^p ROFILE the wedge 21 substantially corresponds umenšování volume of the yarn during its contraction. In this way it is possible to produce very fine yarns with high twist.

US ořádání ^P of Fig. 11 is suitable for bulky spun yarns with less twist inserted, while it is not necessary that all of the ^VS-p ERNE frilmní ^pl och ^y interfered to this level.

At _ zařízern ^l that equal ^Ez in ^ypřád at ir ^the Zn ^s efelktrn ^p nze ^p RIV ^and happenings ^color-E and / or count of the different fiber material conveying ducts 10, 10 'of the rotating body 19 or different speed of the delivery systems opener device 1, Γ.

In the manufacture of the core yarn, a carrier component in the form of a yarn, silk or fine strand, unwound from a spool pattern arranged in front of a pair of rotary bodies 13, 14, passes through the slit 21. 12, according to which the friction abutment surfaces 29 of the disks 31 extend above the throat axis 22.

The spinning process proceeds almost without breaks because there is minimal axial tension in the yarn being formed. However, if for some reason a specific thread breakage occurs, it is immediately indicated by the sensor 59 by means not shown turns off the feed device ojednocovacíc ^h ^ ^oJ iroj ^s 1 ^Γ and ^{d also} stops the stroke of the yarn takeup fifth

^Ob servant you & sfr br & rblnu ²¹ from of ^the t ^es vtéken or of other fibrous nečistoh odvrne of coil ^{s 56} end ^to esters adjusted to an appropriate length corresponding to the distance between the draw-off device 4 and. The beginning of the rotary bodies 13, 14. This yarn caught in of the take-up rollers 23, 24 and insert into the slot 21 so that the end of the yarn is taut. By increasing the yarn tension, the sensor 50 is switched on, which re-connects the fiber supply to the opener. device 1, 1 'and yarn draw-off. During the period for which advances the yarn end gap 21 between the rotating bodies 13, 14 is created in the slot cycle of the fibers from which the connection-stretching yarn and subsequent contraction of the yarn rolling on friction surfaces 19, 20 and the supporting friktaí ^pl of ^{e 29 ,} vytván NOCs ^and pnze ^55, towing ^{and Al} e ^{CKY 23, 24} and NAV ^even CIV ^plated on ^to at 38th

The exemplary embodiment of the spinning unit shown in Figures 1 to 3 is one of many. possible solutions that are directed to the final incubation @, establish a optimum ^p o ^{d y} Mink virtually slip-free spun yarn in the spinning nip. An essential feature of the solution is that the yarn formed is twisted alternately by the two friction surfaces 19, 20 and in the region of the part of the rotating bodies 13, 14 facing the take-off device 4. friction surface 29.

In the exemplary embodiment, the friction abutment surface 29 is provided on the disc 31, but this is not a requirement. The friction abutment surface 29 can also be provided on an endless belt-shaped carrier which is guided on guide rollers, at least one of which is a driving roller.

Also, in the exemplary embodiment, the rotary body has an outer frictional surface, but it is also advantageous to provide at least no ^N is ^d of rotating bodies inner frictional surface, so that the one rotary body surrounds the second rotary body.

Claims (11)

OBJECT OF THE INVENTION First ZaHzení ^P ro ^f rikční for ^D ERN with otevOným end partly comprising two adjacent stored tightly rotating rotary body provided -frikční surface, between which is ^created is ^{coupled with} the slot-T ^{e, h} coming into rdla ^forming the narrowest point of the gap and from which at least one is in the gap region is provided with a suction zone and by at least one separating device upstream of the rotary bodies from which ^h o pMváděp VLA ^on to the gap, the further draw-off device for drawing off the yarn slot toward one end side rotačníc ^h T ^e forest, in preventing ^the Irishman twist characterized in that the part of rotating bodies (13, 14) facing the extracting means (4) is both rotating T ^E Losec ^{h (13, 14)} arranged identically at least one circumferential ^d r. ^AZ ka ^(27, 28h ^to Tero tightly ^P roc ^{HA d} o ^p black frictional surface (29) extending into -active part of the yarn path (55), creating in the slot (21) provided on the carrier (30) moving perpendicular to the axis (22) of the neck slit (21). 2. Device according to claim 1, wherein the TM of the carrier ⁽³⁰⁾ is formed ^{of y} en ^No. em disk ⁽¹ ^ 3 disposed on the drive shaft (32). Parallel to the axis (22) of the neck. Device according to claim 1, characterized in that the active portions of the friction surfaces (29) are equidistant from the throat axis (22). 4. Apparatus according to claim 1, characterized ^{by.-TI z} e mod ^further transmission ^T ^ alktlvn abutment portion friction surface (29) from the axis (22) of the neck, in the movement direction of the yarn (55) of the slot (21) decreases. 5. The apparatus of ^P e ^{b dl} ODU 1 ^ .se characterized in that at least one active portion of a friction bearing surface (29) passes through the axis' (22) of the neck. Sixth Sortorder after ^dL e ^{d b} o u ^y 1 characterized in that at least one active portion. ^F ri ^for supporting BLK ^P loc ^{HY (29)} extends from the ^p axis (22) of the neck. 7. Apparatus according to claim 1, characterized in that- tm .alespoň akttvrn part ^o n ^{e f} ri abutment ^CZK .ní ^pl oc ^{HY (29} h extends at ^d axis ⁽²²⁾ of the neck. ⁸ . ^Z and ^{R b} felled down, the ^d u 1 ^{characterized} characterized in that at least one rotary body (13, 14) is conical. Device according to Claim 1, characterized in that the axes of rotation of the rotating bodies (13, 14) converge in the direction of the yarn withdrawal (55). ¹⁰ . Zanze ^{dl p} o e ^y in claim 1 characterized. The method according to claim 1, characterized in that the friction abutment surface (29) is roughened structurally. 11. Apparatus according to claim 1, characterized in that .se TM · ^f o ^p ri ěr.ná ^to protrude ^pl oc ^H and ⁽²⁹⁾ is a macro-roughened.