DE1785029A1 - Method and device for the continuous drawing and upsetting crimping of continuous filament yarns - Google Patents

Description

DR. ELISABETH JUNG, DR. VOLKER VOSSIUS, DIPL.-ING. GERHARD CQLDEWEY

MO NCH EN 2 3. S I EG ES ST R ASS E 26 TELEPHONE 34 50 67. TELEGR AM M-AD RESSE: INVEN T / MON GHEN

I im.

Ariilifiir ·., Liiederland-a

1 ^ 0 Torri ^ h.tung sum fconti.aiti -) rllchen Veiimd Stauehzv ^ useln by Sadlo thread yarn "

bat.- ?. 4. Angus t 1967 ₅ W. j der land e _f

s Mr .; 67-10 833

-.u-.U.- .Si / linching concerns a ■ "" experience of the k Ysx ··; oi-sckeii άπα S-taiKihferäuseln of a synthetic filament «ga: f-i3- -./obei daa unvc ^ -i; Yarn through Yorlegel elements with -ko ».f! - ;: a: utez 'G-eeniiv / indigksit - / o-igf-leg'K usual caseß erb.it-st _? üurftrx 2 KräUB ^ valaenj driven with constant speed, whose üiiufangagesch SPEED raindeatens is twice as high, v; ie the Torlöggeschwindiglceit, against a plug of alreadya ßtauchkruseltem Öarn in the an- · -. closing crimping chamber is compressed and finally drawn off as crimped yarn from the compression crimping chamber .

The invention relates "furthermore to a device for through-

109883/14 57

I am known to have experienced such a thing. Stretching the yarn required. ', Low, relatively high tension generally applied by the corrugated crimping rollers , which causes difficulties , insufficiently stretched as well as unevenly crimped · v / ird.

Object of the invention iat it _5, a method of the type described above provide co »of the well-known ^ th muddled does not have the these Hachteil *

The method of the invention is characterized in that the yarn between the "serving elements" and the crimping rollers runs over a transport element whose peripheral speed is both higher than the peripheral speed of the crimping rollers and higher than the speed at which the yarn runs over this transport element.

The method of the invention is preferably carried out in such a way that

of
that the peripheral speed / fran sport elements at least 10 # "preferably rjedoeh 20 '- is selected 25 $ higher. than the circumferential speed of Krauselwalzen * In the method, therefore care is taken ₅ that a certain slippage between the transport element via the running yarn and the l'ransportelement present "Accordingly brings the Transportelament the grows th part of the sum Ver

109883/14 57

BATH ORIGINAL

stretch dos Gsr: as with a plugging ratio of for example ?, : 4 required force. The yarn tension is therefore relatively low in the section between the transport element and the crimping rollers, so that the yarn runs through between the crimping rollers with practically no slippage.

The method of the invention can be carried out in a simple manner with the aid of a device in which the aforementioned Iran port element consists of a driven cylindrical roller and a spacer roller .Additional crimping are provided, yieim in the process according to the invention, crimping elements, in particular a pair of toothed rollers, a pair of pin wheels or other elements, between which the yarn can pass in a zig-zaok, are used as the transport element.

The invention becomes with reference to the accompanying drawings further explained.

FIG. 1 shows an embodiment of one according to the invention Apparatus for carrying out the method of the invention.

Fig. 2 shows another embodiment of a device for carrying out the method of the invention =

1 0 9 8 8 3 / U 5 7

In the embodiment of the invention shown in FIG. 1, undrawn yarn 1 is fed from a bobbin 2 via a thread guide 3 with the aid of. Serving elements working at constant speed in the form of pre-roll rolls 4 and 5 are withdrawn. The yarn 1 goes behind the Torlegv / alzen 4 and 5. into a stretching zone "in which, depending on the stretching ratio used, it is stretched to, for example, twice or four times its original length, the molecules in the yarn being oriented" instead of. The draw ratio applied is the ratio between the peripheral speed of the Vorlegwalsen 4 and 5 and the circumferential speed of the crimping rollers 8 and 9. Between the Vorlegwalzen 4 and 5 and the crimping rollers 8 and 9 is a! Transport member _r disposed that of a cylindrical drum 10, and a spacer roller 11 is formed. The peripheral speed of the roller 10 is 25 $> higher than the peripheral speed of the crimping rollers 8 and 9. The peripheral speed of the roller 10 is also considerably higher than the speed at which the yarn runs over the roller. In other words, the yarn runs with slippage Over the rollers 10 and 11 “Between the transport element consisting of the rollers 10 and 11 and the crimping rollers 8 and 9, the yarn runs in one or more turns around a heating plate 12, whereby it is heated to a temperature below its melting point.

BAD ORlGiNAL 109883 / U 57

The heated and drawn yarn on these catfish is through the: Kräuselwal sen S and 9 against a · "plug from already stauoligekräusaltem.ß-arn compressed, which is in the curling chamber 13 it is essentially ziok ^ zag-shaped is curled. Beraa cooling down, this is upsetting pucker fixed and permanent »At the outlet of the crimping chamber 13, a counterpressure is exerted on the plug made of crimped yarn exercised a hinged flap 14, which with a weight 15 is loaded. The upset crimped yarn is removed from the crimping chamber 13 by means of a known winding device, from a drive roller 16 for winding

* consists,
of the yarn on a bobbin IT / drawn off and, after having passed through one or more tensioning devices if necessary, wound up to form a yarn package 18. The yarn is guided back and forth in a known manner in the directions indicated by the double arrow 19 »

FIG. 2 shows a somewhat modified embodiment of the device of the invention, with the same parts being provided with the same reference numerals. The embodiment according to FIG. 2 differs from the embodiment of the invention shown in FIG a pair of cooperating gears 20 and 21 are provided _for between which the yarn in a zig-Zaok can be performed. The gears 20 and 21 also rotate at a circumferential speed of $ 25> higher than the crimping rollers 8 and 9, so that the yarn runs with slippage over the gears 20 and 21,

109883 / U57

BATH ORIGINAL

Particularly favorable results are obtained when applying the method of the invention to a composed of 10 monofilaments of polyamide yarn, the? OrleggQSchwindigkeit _P d * ho the speed is the yarn on the countershaft rollers 4 and 5 is running, the invention bsträgt in this embodiment, 210 m / Min. _f where the circumferential speed of the crimping rollers 8 and 9 30 is selected so that it results in a yarn axis wind speed of 685 m / min. The yarn is drawn in a ratio of 3D26 _F where the circumferential speed of the rotating transport element is 760 m / min * B is a 40 cm long, used 160 ⁰ C hot Heiaplatte. The yarn produced in this way has a Kräuselungsverkürzung 24 i> and a Padenaalu of 40.2 denier "

1 0 9 8 8 3 / U 5 7 BAD ORIGINAL

Claims (5)

I ₈ A process for continuously stretching and stuffer box crimping a synthetic filament gams "wherein the undrawn yarn submitted ness by Torlegelemente constant VELOCITY ·» gevriinschtenfalls heated _t by 2 driven at a constant speed crimping _p whose peripheral speed is at least twice as high as the Vorleggeschwindigkeit against a plug of already crimped yarn is compressed in the subsequent crimping chamber and finally. is withdrawn as a chamber crimped yarn from the stuffer Krause!, characterized labeled in · "G ei ζ η h et _f that the yarn (1) between the Vorlegelementen (4? 5) and the. Kräuaelwalzen (8, 9) tibtr a transport element (10, 11 respectively, 20, 21), runs its peripheral speed both higher than the circumferential speed of the crimping rollers (8 _f 9) and higher than the speed "with which the yarn about this! The transport element (10, 11 or 20, 21) is running » 2. The method according to claim 1, characterized in that the peripheral speed of the transport element (10, 11 or 20 t 21) is at least 10 $ higher than the peripheral speed of the crimping whales (8, 9) 109883 / U57 3 _β method according to claim 2 _r characterized in that the peripheral speed of the transport element _{(1O 2} Ϊ1 or »20, 21) is about 20 ~ 25 # higher than the peripheral speed of the crimping rollers (20, 21)» 4. Apparatus for performing the method according to a of claims 1 to 3 with Vorlegeleaentenj. a pair of curling rollers and an associated compression crimping chamber so- φ marked as extraction elements by a transport element (10, 11 or 20, 2I) arranged between the feed elements (4 * 5) and the curling rollers (8 _{} 9) 0} - 5. Apparatus according to claim 4, d. ad u raw marked- * that the transport element from a (IQ) "
driven roller / and a spacer roller (1 | consists of " 6ο Device according to claim 4 ₉ characterized ge ^ k- e η η ζ eich η et that the transport element consists of two crimping elements (20, 2I) ₉ in particular a pair of cream rollers? consists of a pair of pin wheels or other elements through which the thread can run in a zigzag » 1 09883 / U57