DE1710634A1 - Curling device for threads - Google Patents

Description

German WSABCTH 3UNG
PATENT Attorney QAQf

Munich 19-Romanplatz 10 ** VPK ^ ^r ** ου /

171063 *

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N.V. Onderzoekingsinstituut Research in Arnhera, The Netherlands Crimping device for threads.

Priority ^ January 25, 1964 / Holland Anntlde-Hr .: 64-00599

A known device for crimping yarn or threads includes neighboring, in opposite sighting, Circumferential disks »a delivery device for the su-curling thread, a stuffing box adjoining the discs and, if necessary, a further one on the stuffing box Accessible rifle, every rifle consists of a loan from two facing, firmly attached plates,

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Velche the panes on both sides close to their point of contact u # * close and are each provided with a central recess in the longitudinal direction of the plates.

PSden is also understood here to be fuses and the like The threads that may have been reached beforehand are held by the rotating disks against mechanical pressure in the Stuffing box stuffed · The softening not thermoplastic Rtden can be achieved through the use of emollients throw, while thermoplastic threads can be softened by hardening alone. Be in stuffed condition the threads fixed * The fixing can be done in different Wise to be carried out * Bach the ripple thus made

00 * 829 / 1- »·

the thread is withdrawn from the stuffing box and wound up.

The shape and extent of the crimp can be determined, among other things, by the ratio of the delivery speed and the withdrawal speed of the thread into and out of the stuffing box the type of fixation and the degree of softening of the supplied thread can be influenced. To get a well-puckered and even yarn, big ones are needed

'Precision of the device and particularly careful

Management of treatment required. With the help of the

processing according to the Dutch patent 108 717, the requirements for the precision of the device and degrade the care of the treatment without sacrificing the quality of the crimped thread produced. at In this device, the stuffing box is only partially closed; this is possible because the rofclsion of the bundle of filaments is quite strong.

It has now been found that there is still a risk of the bundle of thread migrating to the side from the stuffing box is further reduced when the improvement of the invention is applied. This consists in the fact that in one or two of the plates forming the stuffing box on either side of the central recess one or more additional Recesses are attached, which extend in the longitudinal direction • of the plate.

BAD ORiGIMAL

001029/1549

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The volume of each additional recess is preferably smaller than that of the central recess. . Furthermore, the additional recesses piston saw »Have a tooth-shaped cross-section. :

The tendency of the thread bundle to sideways out of the stuffing box emigrate is further reduced if the central recess only begins at a point around a short distance, preferably a few millimeters, behind the contact point of the discs.

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The invention will be seen below with reference to the schematic. | Drawing explained. Are in it

Pig. 1 a side view of the device according to the invention device with one of the plates omitted;

Pig. Figure 2 is a rare view of the lower part of the device;

3 shows a section along the line XZI-IH in FIG FIG. 4 shows a section along the line IV-IV in FIG. 3.

Flg. 1 shows that the two rotating disks 1 and 2. ( touch each other. As can be seen from Fig. 4, they are quite thin. You are by means of a not shown Drive device ^ set in rotation in the direction of the arrow. The panes 1 are in the vicinity of the point of contact and 2 enclosed by two flat plates 3 and 4 «

OOS029 / 1849

BATH ORIGINAL

In Fig. 1, the plate 4 is omitted. The plates 3 and 4 are provided with similar Mittelausnehniungen 5, which begin in the vicinity of the contact point of the discs 1 and 2. The recesses 5 together form the stuffing box of the device. Those parts of plates 3 and 4, in which the straight sections of the recesses 5 are provided can be cooled or heated as desired. According to the invention, there are on both sides of the central recess additional recesses 6 of sawtooth shape.,

On the other side of the disks 1 and 2 there is also a capillary 7 between the plates 3- ₍ and 4, which can be heated separately. The plates 3 and 4 and the capillary 7 are heated or cooled in a known manner The necessary devices are just as little shown as the precautions to prevent excessive heat transfer from the heated to the cooled part of the plates 3 and 4. For this purpose, for example, a local constriction of the plates or a thin piece of insulating

ί serve material between the warm and cold part.

The supplied thread 8 is guided through the capillary 7 and is then grasped by the disks 1 and 2. The thread has softened somewhat in the capillary 7. A thread bundle 9 is formed behind the disks 1 and 2, against which the thread 8 is pressed by the disks 1 and 2. So sick always new parts of the thread bundle 9 form in one

BATH ORIGINAL

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the widening section of the stuffing box can do that crimped yarn fixed and then cooled in the straight section of the recesses 5. The back pressure to form the thread bundle 9 in the stuffing box is applied through a flap 11 which can be pivoted at 10 is mounted, Mnd pressed by a spring 12 we ^ ^ Due to the cohesion, the thread bundle 9 is prevented from opening the recesses 5 of the stuffing box sideways leaving. The resistance of the walls of the recesses 5 against the passage of the thread bundle is not so great. * that the thread bundle on a downward migration .with a constant I. Speed would be prevented. A lateral migration of the thread bundle out of the stuffing box is made more difficult by the additional recesses 6.

below the flap 11 the crimped thread 13 is laterally or down from the stuffing box »wipe the plates 3 and 4 by means of a trigger device, not shown deducted. The crimped yarn can be placed on a winding device be wound up into a package. A known winding device will preferably be used at which the winding speed depending on a low-adjustable tension of the crimped thread is steered.

As can be seen from Fig. £, the middle recess begins 5 at a point whose distance A from the point of contact of the two disks is about 2 to 3 mm.

Claims (4)

Claims 1. Crimping device for threads, consisting of two adjacent discs rotating in opposite directions, a delivery device for the thread to be crimped, a stuffing box adjoining the discs and, if necessary, a further bushing connected to the stuffing box, each box consisting of two opposite, fixed , attached Flatten which enclose the .Slices both sides near its, the point of contact and each have a middle, in the longitudinal direction of the plates have extending recess, is characterized in that in one or both plates (3, 4) on either side of the central recesses (5) one or more additional recesses (6) are provided which extend in the longitudinal direction of the plate. 2, Device according to claim 1, characterized in that that the volume of each *;, ^ St * borrowed recess is smaller than that of the middle "" recess. 3. Device according to spoke 1 or 2, characterized in that the si & s & tslicfees recesses approximated 'Stahn-shaped or sigssaiäfurmig® shape Maben. . ' \ ■ BAD ORIGINAL * 001120/1 $ 4 «: - 7 - ■ "; ■. ■ 4. Device according to spoke 1, characterized in that that the middle recess begins on a steep slope, which by a small distance (A), preferably a few ' Millimeters, downstream of the point of contact of the Disks lay EAD. 008829/1648 Blank page