DE1435725A1 - Device for creating a false twist in textile yarns and threads - Google Patents

Description

• August 7, 1968

DR. E. BObTrNER
DIPL-IKC. ! : .- A I.iülLER P 14 35 725.6 (ü 9090)

ο h " ^! ^ ^; :; ^ * Case

Lucile - Grahn - Street 38
Telephone 443755

TJniroyal, Inc., 1230 Avenue of the Americas, New York, N.T. (V.St.A.)

Means for generating a swirl in false

textile yarns and threads »

The invention relates to a twist encoder device for creating a false twist in textile yarns and threads with a swirl chamber.

The structure of continuous, existing thermoplastic lextilgarne of several Päden such as polyamide (nylon), polyester (ZOB. "Daeron" eingetr _o trademark), polypropylene, etc., is influenced by the fact that this / yarns issued a high swirl, they in twisted state relaxed under heat and finally the original twist completely or largely eliminated. Usually the resulting yarn is used in a composite yarn construction with another yarn that has been twisted in the opposite direction while being relaxed under heat.

New documents (Art 7 g I Paragraph 2 No. 1 Satt 3 d · »Äralwunoea«! · V. 4Ji. 1; p7J

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a »2 ·>

If ... the twist is generated by a false twist generator, the process is generally continuous. The yarn first moves through the heating zone before it reached the false twister. The wrong or temporary twist "runs", i.e. extends from the twisting ** back to the heating zone <> The twist is released during the passage of the yarn is eliminated by the twist generator and the twist-free yarn is then wound up.

In the known devices for generating a false The twist becomes the previously heated and thus plastic made thread while passing through a channel of cold air or gas rinsed around «, the air flows through obliquely inclined guides fed to the channel, so that a vortex is created, which gives the thread a twist that is fixed by the cooling. Bsi this one Facility, the gaseous refrigerant has the same Direction of flow like the thread.

Due to the small cross-sectional dimensions of the cylindrical guides, only an inadequate twisting effect is achieved. In contrast, better results were achieved by a false twist device in which a vortex chamber that widens from the thread inlet is provided with a final part, the

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central hole serves as thread outlet. In the surface of the end part that is perpendicular to the direction of passage are bores inclined in a pearl-spherical direction for supplying the gaseous quenching agent provided, which flows through the chamber in a lively vortex and the entrained thread a strong Imposes twist. In this device, too, the gaseous agent flows in the same direction as that Thread.

The invention is based on the task of this goal direction to improve to a high throughput speed achieve.

The invention is that the Sammer one has a cylindrical space that adapts to the wide

Adjoins the end of the conical space with the same diameter and in the wall of which there are passage openings, and that the outlet opening for the thread is formed by a nipple which protrudes into the cylindrical part of the chamber and the end of which a has a smaller diameter than the cylindrical chamber part.

According to the invention, the conically widening Swirl chamber from the gaseous agent in countercurrent

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flows through to the thread run. The gas is at the furthest Location of the chamber by tangentially directed brackets fed and thereby set in a lively vortex. The nipple that is provided at this point and protrudes into the chamber, the central bore of which is the thread exit forms is conical in shape so that the swirling Gas jets are deflected on impact in the axial direction against the thread path. Through the conically narrowing towards the thread entry chamber takes the Vortex speed to, so that the thread as possible large twist is imposed at the point where the thread has not yet cooled down and is therefore plastically deformable is. It is important that the chamber from the inlet opening for the thread immediately widens conically and has a larger cross-section than the outlet opening formed by a narrower and longer bore. This ensures that the gaseous Agent is forced to flow through the vortex chamber against the thread path. Characterized in that the air flow flowing after the thread entry au in the conical space part is squeezed into ever narrowing space, increases its vortex speed according to the decreasing one Diameter more and more and reached on Thread entry end its highest value. The one through the The warming of the plastic thread is immediately carried out at the highest speed when it enters the vortex chamber

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swirling air carried away. This not only does a thread balloon is formed through which the swirl effect it is also a great advantage for the thread to cool down as it passes through the Vortex chamber causes, whereby the twist already imposed on entry remains permanent, because the thread so is cooled quickly so that it is no longer plastic. The still plastic thread is mechanically through the swirling air tore around and forced a very strong twist on it. In this state the The thread is thermally quenched so that the forced twist cannot open again

According to the invention, the door direction used as a twist generator enables operation with very high twist speeds. These, in turn, allow the yarn to pass through the device at high speeds with any degree of twist. In addition, it is possible ^{to arrange n} a "- and ⁿ z ⁿ - twist generator stations in pairs next to each other without any complicated mechanisms for changing the direction of rotation of the mechanical elements. This in turn enables yarns with opposite twist to be joined together to form a balanced structure in'v> the receiving station for the yarn with a modified structure.

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The tiUft-Palschdrällgebor also enables fast: cooling of the heat-solidified yarn Tor the removal of the twist, as the incoming yarn is exposed to the MtH effect of the compressed air exiting the nozzle -

In the figures, a © preferred embodiment of the invention is shown »

Figo 1 is a schematic, perspective and partial broken-away representation of the false swirl nozzle,

Fig. 2 is a view of the entire device for * Influencing the structure ".;

The yarn 10 runs from the Kötzer 11 (Fig «2) through guides. 12, 13 via a tension button H and a guide to the gap between the steel roller 16 and a rubber-covered one Pressure roller 17 · The steel roller 16 is in the driven by an arrow direction and can, if desired, together with one at a distance a small-diameter roller arranged by it Pair of godet rollers (rollers with slightly against each other inclined axes for generating a yarn feed) for

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Move forward to form the yarn. In the illustrated Device runs the yarn to the rope around the roller 16 to Guide member 18 and is guided from there in a substantially rectilinear path up to the deflection rod 19. Between the guide member 18 and the rod 19 the yarn runs first through the hot air circulating furnace 20 and then through the false air twister 21. From the staff 19 the thread comes under the influence of a thread guide who goes back and forth in Pig. 2 in general indicated at 22, and will eventually appear on a Coil 23 wound on a rotating steel roller 24- rests and is driven by this by friction.

Further stations for influencing the structure are on both sides of the station described as well as at the. arranged on the opposite side of the frame, as is customary with textile masonry. The false twist device 21 is screwed into a holder 25 and is connected via a control needle valve and a T-shaped connection for a manometer to the distributor 26 ', which supplies compressed air via the hose 27 from an air source, e.g. a conventional air compressor, not shown will «The individual false twists on this side of the machine, both for ⁿ s" and "z" twist,

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are in similar. Way connected.

The air false twister is shown in detail in FIG. 1 and, as can be seen, consists of a tube 28 which establishes a connection between a holder 25 and a cylindrical dumbbell 29. The shell or housing 29 in conjunction with a two-piece insert form the whole air false twist transmitter device or nozzle 21 · of the first insert comprises a cylindrical portion 30 a with this one-piece, reduced diameter cylindrical Nippelfuß 31 between your section 50 and the bottom of the frusto-conical nipple 52 which protrudes into the nozzle. A cylindrical portion 55 of reduced diameter on the outer surface of part 50 opposite nipple 32 is integral with part 30. This first insert has an axial channel extending from the frusto-conical end of nipple 52 therethrough. This channel is conical in a cable its length lying in section 30 and runs to a cylindrical hole of larger diameter, which is open to the outside of the nozzle.

The second insert has a cylindrical portion 34, which with a body 35 on its inside of reducing

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system diameter with cylindrical bores from one And a second cylindrical portion 36 of reduced diameter extending from the nozzle extends outwards. This-second bet has, too an axial opening with a cylindrical Channel begins running inward a short distance from the outer surface of the section and into the pointed end a frustoconical hole opens through the cylindrical section 34 passes and ends in a cylindrical hole, the diameter of which is so dimensioned is that its inner walls fit tightly over the foot 31 of the nipple

The two inserts have such a dimension that the cylindrical sections 30, 34 fit into the cylindrical dumbbell 29 and close it and with their Inner surfaces together with the outer cylindrical surface of the body 35 containing the cylindrical bores, delimit a chamber which is connected to the pipe 28 and can be filled with gas, e.g. air, at overpressure * In In the illustrated embodiment, the body 35 containing the bores are the nipple 32 and the Nipple foot 31 so dimensioned that when the inner surface of the body 35 containing the bores on the inner surface of the cylindrical portion 30 is applied, the pointed end

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of the nipple 32 reached to the base of the frustoconical portion 34. Thus, it is shown in FIG Embodiment of the nipple 32 arranged within a cylindrical opening and extends essentially completely through that part of the cylindrical chamber which in the assembled state the door direction remains open, through.

Of the bores containing body 35 has Animal bores, one of which is shown at 37 and which are arranged mutually offset by $ e 90 degrees. The bores 37 run generally radially through the bore body 35 and establish a connection between the air chamber surrounding this bore body and the cylindrical hole within the bore body 35. The bores 37 are arranged with their inner ends tangential to the surface of the cylindrical hole within the bore body 35 and lie at a point of the longitudinal extent of the nozzle opposite the conical surface of the nipple 32 between its ends.

Compressed air admitted into the pipe 28 passes through the air chamber of the false twister from this chamber the bores 37 and will go into the cylindrical hole inside of the bore body 35 blown in rays and

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swirled there so that it enters the frustoconical channel in the lower insert shown in the figures and showering the outer entry channel in the lower insert and exits through the bore that extends through the nipple 32. Vofaugewelse, the temperature of the compressed air is substantially below the curing temperature of the yarn, the structure of which is to be influenced, and can preferably be substantially the same as room temperature. The yarn runs through the device from bottom to top and is twisted below the nozzle. The direction of the twist, whether ⁿ s ⁿ or "z", depends on the direction in which the bores 37 enter, which in turn determines whether the air is swirled clockwise or counterclockwise in the duct by the air swirl generator 21.

Achieved using the air nozzle of the invention You can easily have an independent control of the swirl generator speeds in each swirl generator station. A The valve in the air supply line is adjustable in such a way that the air pressure in the swirl generator station can be changed is. Advantageously, a manometer is on the T-connection as a visual display of the swirl nozzle effective pressure connected. The use of such adjustable pressure devices is particular

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advantageous when the raw material has a slight pre-twist in the one direction which it requires makes that the twisting station, which has a yarn in the twisted in the opposite direction, runs a little faster than the twist generator station which only supplements the pre-twist when yarns are desired for balanced structures consisting of several threads are. Otherwise it may be desirable to give different yarns an unbalanced twist. The adjustable air supply source is very suitable for this purpose.

- patent claims -

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Claims (1)

ί receipts l ^ f not geäld - 13 claims (1 "Twist device to generate a wrong Twist in textile yarns or threads with a swirl chamber, through which the thread runs to a cylindrical outlet opening and one from the thread inlet conically widening space and tangentially directed inlet openings for feeding of a gaseous medium to the chamber, characterized in that the chamber has a cylindrical Space 30: which adjoins the "wide end of the conical space with the same diameter and in its wall through openings 37 are, and that the outlet opening for the thread through a Nipple 31 is formed, which is in the cylindrical! Cell the chamber protrudes and the end of which has a smaller diameter than the cylindrical chamber part a 2 ο twist device according to claim 1, characterized in that the nipple 31 tapers within the chamber in the direction of the thread inlet 32. New documents (Art. Ι § ι au, ·, no., ■ ** 3 * »amendment, v. 4. <m9 8098U / 1028 BATHROOM ΟΛ ^ - ^ν ** ' 3. Twist device according to claim 1 or 2, characterized in that the nipple 31 is located at the level of the transition between the kenic and the cylindrical part of the chamber. 4. Twist device according to one of the preceding claims, characterized in that the diameter of the outlet opening which is formed by the nipple in the chamber is smaller than the diameter of the chamber at the thread inlet. 9098U / 1028