DE1710019A1 - Method for twisting threads or yarns and twisting machine - Google Patents

Description

Patent attorneys Dipl.-Ing. W. Scherrmann Dr.-ing. R. Rüger

73 Esslingen (Neckar), Fabrikstrasse 9, PO Box 348

11. JUli I967 phone

PA 96 ΠaW Stuttgart (0711) 35,539

Telegrams patent protection Esslingenneckar

T.M.M. (Research) Limited, Hartfora Works, Oldham, Lancashire / England

Method for twisting threads or yarns and twisting machine . -

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The invention relates to a method for twisting threads or yarns which, with a plurality of thread or yarn ends, form a supply package wound on a tree form and a twisting machine for performing this process.

In the manufacture of yarns for automotive tire cord fabrics For example, it is common to put the material on to have a tree ready on which a multitude of individual threads or yarns are wound. The threads or yarns are unwound from the tree, and each thread and each yarn is individually twisted (twisted) and wound on a spool which is then a predetermined length of the Contains twisted (twisted) thread or yarn. The spools are then transferred to a multiple twisting machine, where the twisted (twisted) threads or yarns from the bobbins

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unwound, and two or three of the twisting stations are fed, where they are twisted to be wound on other bobbins, which in turn on the bobbin frame of a loom and supply the warp thread for the material to be woven. The serious one The disadvantage of this known and customary method is that it requires a very large number of coils, which makes up a large part of the total investment required

Make up Φ and also to the maintenance costs to an essential φ borrowed part.

The object of the invention is to improve the aforementioned method and the corresponding twisting machine in such a way that a A much smaller amount of bobbins is needed and the thread or the thread between the single operations of twisting There is less need to handle twine packages.

According to the invention the threads or yarns are either single or multiple unwound from the tree y and form of the individual twisting units a winding of twisted thread or yarn ( "downward twisting"} and then the filaments or yarns to form an additional wire from the various Winding unwound again and wound up again on the same or another tree or other trees ("upward twisting").

Although the conveying speed of the thread or yarn during downward twisting is about the same as during

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Twisting up is according to a further feature of the invention the speed of rotation of the twisting spindle during downward twisting is greater than that during upward twisting, so that the greater part of the wire is advantageous to the material

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admittedly during the downward twisting.

The twisting machine for carrying out the new method, in which the thread or yarn is unwound from a supply roll arranged on a tree and fed to the individual twisting points, is designed according to a further invention in such a way that the conveying means provided at the individual twisting points for the threads and the Allow yarns to reverse their direction of movement and that by special means the threads or yarns are given an additional wire when they are wound back onto the tree of the supply winding or another tree or other trees.

Each twisting station expediently contains a twisting spindle a ring and rotor arrangement.

The supply roll is advantageously located on a rotating one Roll up.

Advantageously, the twister comprises a pair of delivery rollers, which draws the yarn or the yarn from the supply roll, and feeds the twisting units, and further drive means that enable the Vorratewickel directly in rotation so that the twisted material can then be subtracted from the twisting units.

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The twisting machine can also contain drive means for the roller against which the supply lap rests, which have the effect of that the supply roll either unwinds or winds up thread or yarn, depending on the direction of rotation of the roller, while further rollers are arranged on the thread or yarn path between the supply lap and the twisting points are that can rotate in both directions of rotation and thus the promotion of the thread or yarn from the supply lap to the twisting points and then the removal of the twisted material from the twisting points.

In the drawing, an embodiment of a twisting machine according to the invention is shown. Show it:

1 shows one side of a double-sided twisting machine of the ring and traveler type in a side view in schematic representation during downward twisting,

2 shows the twisting machine in the same type of representation during upward twisting,

3 shows the machine in a front view in a schematic partial representation during the downward twisting and

Flg. M a modified embodiment of a coil, which can be used instead of the coil shown in FIGS. 1 to 3 in a side view.

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ORIGINAL INSPECTED

The illustrated embodiment is based on a two-sided twisting machine, d. H. a machine with two Rows of twisting stations, one row on each side of the machine. All twisting points are arranged to be supplied with yarn from a single supply package. For the sake of simplicity only the left row of the twisting points is shown in the drawing (Fig. 1 and 2). However, the structure and the Effect of the twisting points of the right row exactly the ^ same. ^

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In the twisting machine according to the embodiment 144 twisting points are provided, of which 72 are on each Side of the machine. Each twisting station contains a twisting spindle 1, which is driven by a central shaft 2 by means of an endless belt drive 3 is driven. The shaft drives all of the machine's twisting spindles and each belt drive 3 sets a number of adjacent spindles 1 in rotation. The twisting spindles are on stationary spindle Jf benches 4 arranged. Each of the spindles takes a coil 5 ^ on, the at de.η in Figs. 1 *, 2 and 3 illustrated embodiments consists of a cylindrical piece of pipe with end flanges. As usual, at each spinning position a ring 6 with a runner is provided, and all rings on one side of the twisting machine are through a common not shown ring rail connected, which is moved up and down in a known manner and in this way causes the yarn 7 supplied to the individual travelers produces 5 laps on the associated bobbins.

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- 6 ORIGINAL INSPECTED

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The thread for all the twisting stations of the machine is supplied from a single supply package consisting of a plurality of individual threads wound on a tree 8 which is provided with end flanges 9 which hold the thread back. The supply roll is arranged above the spindle 1. It is held partly by arms 10 pivotably attached at 11 and partly by a rotatable roller 12 arranged below. Since individual twisting points are provided on the twisting machine I ¹ JjJ, individual threads are wound onto φ the tree 8 1M.

Before the twisting process begins, the ends of all the threads are pulled off the tree 8 and passed over a loose roller 13. The path of FMe η is then divided: 72 thread ends are fed to the left-hand row of twisting stations via a further loose roller I ¹ J, driven delivery rollers 15 and 16 and a thread guide 17, as shown. Each thread end then arrives at the traveler belonging to each twisting point. The other 72 thread ends are fed from the loose roller 13 to a further loose roller 18 and then arrive at the delivery rollers and thread guides which belong to the right-hand row of twisting stations (not shown).

When twisting downwards, the threads can only be pulled off the tree 8 by the driven delivery rollers 15 and 16. This removal of the threads from the supply roll can, however, also be assisted by the fact that the roller 12 is set in rotation by the roller 16 via a special drive 19, as shown in FIGS

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ORIGINAL INSPECTED

is. The V / Alze 12 is thereby in the Pig. 1 rotated by an arrow direction and causes because of their frictional contact with the thread that is wound on the tree, in turn, that the supply roll rotates in the opposite direction. Whichever type of thread take-off is used, however, the thread finally arrives at the ring and traveler arrangement 6, and this applies the twisted thread to the bobbin 5 in any desired arrangement as it moves up and down. The amount of _{origin- Λ} borrowed on the tree 8 and the supply wrap wound ^w

The thread is chosen so that it is sufficient to cover the various ™ which bobbins 5 contain the desired amount of twisted yarn to fill during the downward twisting. When this process is completed, the machine is stopped and the machine is twisted upwards prepared.

The upward twisting is prepared in that the ring banks are uncoupled from their drive and fixed with the various ring and traveler arrangements 6 at the uppermost end of their path M. It is also necessary to reverse the direction of movement of the threads. If, during downward twisting, the rollers 15 and 16 were used solely to pull the threads off the supply winding, special drive means are now used for the tree 8 during upward twisting. These drive means, which are usually kept ineffective during the downward twisting with the aid of a coupling, can consist of a controllable belt drive 20 which acts on shaft connections which protrude on both sides of the tree 8. However, if the drive 19

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for the roller 12 for the downward twisting is sufficient a mere reversal of the drive movement of the rollers 15 and 16 to determine the direction of movement of the threads during the Reverse upward twisting

When these preparations are finished for the upward twisting are, the machine is started again, and the already partially twisted thread 7 is from the various bobbins 5 deducted by means of the corresponding runners, these now acting like flyers, as they usually do Can be used in conjunction with upward twisting spindles to aid unwinding. The thread is from the

fed to the tree 8 in drive rollers 15 and 16, where it is wound up in the fully rotated state. During upward twisting the conveying speed of the thread is substantially the same as that during downward twisting. However During the upward twisting, the rotational speed of the spindle 1 is slower than that during the downward twisting because Emphasis is placed on most of the required To impart rotation to the thread as it is twisted downwards. This ensures that the thread tensions during the Upward and downward twisting kept more even can be.

The supply lap with the fully twisted individual threads can now be used to feed a multiple twisting machine repeating a similar operation in which the downward twisting is followed by an upward twisting can. In the multiple twisting machine, two or three

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of the twisted threads fed to each twisting point and with each other twisted so that they form a double or triple twisted yarn. During upward twisting, imparted another twist to the yarn while it is wrapped back on the same tree. The yarns, on this tree can then be rewound to other trees that have the required size for the loom, and weaving can then be done from a tree instead of a bobbin.

From the above explanation of the downward and upward twisting it follows that the bobbins 5 only serve as a container between the two operations of twisting, so that these bobbins can, if desired, form parts belonging to the twisting machine. The bobbins used for the successive downward twisting and upward twisting operations can be of any desired shape which adapts to the particular circumstances. In order to favor the unwinding of the yarn during the Aufwärtszwirnens, preferably a coil type can be used, which is shown in Fig. ¹ J. In this case, the central tubular piece 21 gradually increases in diameter over part of its length, so that a frustoconical structure 22 is formed, the end of which with the larger diameter rests against one of the end flanges 23 which is at the bottom when the coil is in use. When using coils the length of which is greater than 23 cm, it is preferable to use coils of the type shown in FIG.

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ORIGINAL INSPECTED

winding the thread from the bobbin during the upward twisting, the thread tension is too high.

Obviously, the method according to the present invention can be used for singly twisting (twisting) the yarns or threads as is the case with the method described with reference to FIGS. 1, 2 and 3, or it can can be used in twisting a plurality of yarns or threads, as is the case with multiple twisting which has also been described above. Well-marked can be fully twisted or twisted Yarn or thread can be wound back onto the original supply tree, as is done with reference to that shown Embodiment has been described ", or they may can also be wound up on another tree. For example, during a multiple twisting, the multiple twisting machine fed by a twine tree on which IM thread ends are wound, which are twisted in pairs to form two-ply yarns twisted, which are wound on 72 spools. The twisted two-ply yarn is then taken from these bobbins peeled off, wired again and wound up on the same tree again. When producing a triple yarn the twisting machine is expediently fed by a tree with 14 * 1 yarn ends and the material on trees wound back, taking up the 72 thread ends. Three of these trees can then be put in a multiple twisting machine are used, so that a total of 216 thread ends are available, and the 72 bobbins would then with one

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ORIGINAL FKi9 ^D «rC ^T ED

Triple yarn to be filled. The material from the bobbins would then be rolled back onto the three trees, each of which would take 2k ends of yarn.

In the illustrated embodiment, the tree is 8 arranged above the spindle 1. Mind you, he could also be arranged differently, for. B. at the end of the machine.

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Claims (10)

"12" 17 1 OU 19 claims 1. Method of twisting threads or yarns with a plurality of thread or yarn ends form a supply lap wound on a tree, characterized in that that the threads or yarns are unwound either once or several times from the tree and attached to the individual Twisting a lap of twisted thread or yarn form ("downward twisting") and that thereupon the threads or yarns to produce an additional wire from the various Winding at the twisting points again unwound and on the same or another tree or other trees be wound up again ("upward twisting"). 2. The method according to claim 1, characterized in that the conveying speed of the thread or yarn during the Twisting downwards is about the same as twisting upwards, while the speed of rotation of the twisting spindles is greater during downward twisting than during upward twisting. 3. Twisting machine for carrying out the method according to claim 1, in which the thread or yarn is unwound from a supply roll arranged on a tree and fed to the individual twisting points, characterized in that the conveying means provided at the individual twisting points for the threads and the Allow yarns to reverse their direction of movement and that means are provided that the threads or yarns in their HÜckwindung on the 1Q9847 / U24 ORIGINAL INSPECTED 13 - Give an extra wire to tree of the supply winding or to another tree or trees. 4. Twisting machine according to claim 3, characterized in that each twisting station contains a twisting spindle with a ring and rotor arrangement. 5. Twisting machine according to claim 3 or 4, characterized in that the supply lap is on a rotating roller. a rests. A. 6. twisting machine according to claim 3, 4 or 5, characterized by a pair of delivery rollers, which the thread or the yarn of pulls off the supply roll and feeds it to the twisting stations and by drive means which immediately set the supply roll in rotation, so that the twisted material subsequently can be pulled off from the twisting points. 7. twisting machine according to claim 6, characterized in that that the drive means for the supply roll act directly on the tree carrying this and its rotational speed can be regulated to maintain a constant yarn tension. · ' 8. Twisting machine according to claims 3, 4 or 5 »characterized by drive means for the roller against which the supply lap rests, which cause the supply lap to either thread depending on the direction of rotation of the roller 109847/1424 or twine unwinds or unwinds, while on the thread or Garnweg between the supply lap and the twisting points are further rollers arranged in both directions of rotation can circulate and thus the promotion of the thread or yarn from the supply lap to the twisting points and then support the removal of the twisted material from the twisting points 9. twisting machine according to claim 8, characterized in that the drive for the supply lap in motion setting roller is derived from one of the conveyor rollers for the thread or yarn or the twisted material. 10. Twisting machine according to one of claims 5 to 9, characterized in that the to be placed on the twisting spindle, Coil consisting of a cylindrical pipe section and end flanges at both ends in the lower area of the pipe section Is frustoconical, the larger diameter of the truncated cone lies on the lower end flange. 109847/1424 L e r s e i t e