JPS60246834A - Production of combined yarn of spun yarn and extensible yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention combines spun yarn such as cotton yarn or woolen yarn with elastic yarn such as elastic yarn such as spandex yarn or crimped yarn such as woolly nylon yarn. The present invention relates to a method for producing gold thread that is made to have stretchability.

Prior art Conventional method - One of the methods for producing the above-mentioned composite yarn of spun yarn and stretchable yarn is to simultaneously insert stretchable yarn into the spun yarn during the spinning stage to form a so-called core yarn. It is well known that the other method is to combine ready-made spun yarn and elastic yarn by covering or twisting.

The former is made into core yarn at the spinning stage.

Although the spun yarn becomes a sheath yarn and is well covered with elastic yarn, it is possible to obtain a beautiful product, but it can only be carried out in large lots - and furthermore, it is a method of low practical value because post-processing is difficult. . In particular, this method is not used at all in the case of animal hair spun yarn because it is produced in small quantities in a wide variety of products. Furthermore, even in the case of spun cotton yarn, this method is only used for underwear and some tights. The reason is that fluffing is difficult and gas yarn cannot be used, and partially dyed yarn cannot be used either. Therefore, the method of making core yarn at this spinning stage can be carried out freely even in smaller lots than this, and there is a tendency to temporarily shift to the latter method of doubling by twisting, such as the use of gas yarn or yarn-dyed yarn.

However, when carrying out a method of combining ready-made spun yarn and elastic yarn by covering or twisting, the twist of the spun yarn may be increased or decreased, resulting in poor texture of the yarn. Don't be an idiot and be at risk of losing strength.

In particular, it is difficult to realize something like core yarn, where the spun yarn becomes a sheath yarn and elastic yarn is inserted into it, and the elastic yarn is exposed on the outside of the spun yarn, which is not only unsightly but also There is a problem in that only those that are easily damaged by friction can be obtained, and an effective method to solve this problem has not yet been realized.

That is, a covering machine uses elastic yarn such as spandex as a core yarn.

If the covering method involves wrapping the spun yarn around the stretched yarn in the twisting direction of the spun yarn, one spun yarn will be twisted too much and become stiff, resulting in poor texture and torque. It's gotten so big that I can't get it to work anymore. Therefore, in this case, if the covering direction for winding the spun yarn around the core yarn is set in the opposite direction to the twisting of the spun yarn, even if the two textures are different, the spun yarn will be untwisted and the tensile strength will be weakened. , it becomes necessary to reinforce with reinforcing thread such as nylon thread. In any case - with such a covering method.

Since the spun yarn in which the nVc fibers are bundled and twisted is wrapped around a thin stretchable yarn as a core yarn, it is impossible to avoid exposing the stretchable yarn to the outside of the spun yarn.

Also, by a method of twisting the spun yarn and the stretched elastic yarn in the twisting direction of the spun yarn or in the opposite direction of the twisting,
The results are almost the same as those of the above-mentioned covering method in that the twist of the spun yarn is increased or decreased by simply applying twist to the stretched and cotton yarns, and that the elastic yarn is exposed on the outside of the spun yarn. .

In addition, according to a method in which a covering machine is used to turn one spun yarn into a core yarn, and the stretchable yarn is wound around the core yarn in the twist direction of the spun yarn or in the opposite direction to the twist, the spun yarn is Since there is no change in the twist, there is no risk of loss of texture or strength, which is good; however, in this case, the elastic yarn is wrapped over the spun yarn, so it is more elastic than in the previous case. It is unavoidable that the yarn is exposed on the front side of the spun yarn.

Purpose of the Invention In view of the above circumstances, the present invention combines one ready-made spun yarn and two elastic yarns.
The purpose of this is to enable the yarn to be doubled in such a way that one stretch of silk yarn is tightly integrated with the whole spun yarn, without impairing the texture or strength of the original spun yarn.

Structure of the Invention The present invention involves untwisting a ready-made spun yarn to a state where it is untwisted or nearly untwisted, and then aligning the stretchable yarn that has been stretched once. This was done because when the elastic yarn is twisted to return to its original twist, the elastic yarn shrinks and becomes wrapped in a fiber bundle of spun yarn. An elastic yarn such as an elastic yarn or a crimped yarn in a stretched state is attached to the spun yarn after passing through a false twisting device, and the twist is restored to the spun yarn, and the elastic yarn appears to be a stretched net yarn due to contraction of the elastic yarn. The purpose is to maintain a covered state.

According to this method, the appearance is that the spun yarn is covered with the upper drawn net yarn, and the stretchable yarn is tightly integrated in the form of being wrapped in the spun yarn, and the stretchable yarn is almost never exposed on the outside of the spun yarn. - Moreover, since the spun yarn is restored to its twist 9, its original feel and strength are not impaired, and thus a good double yarn with the desired elasticity can be obtained.

This method is most effective for imparting elasticity to spun yarn by using single yarns such as cotton yarn or woolen yarn, especially short fibers such as cotton yarn, but it is most effective for imparting elasticity to spun yarns using single yarns such as cotton yarns and woolen yarns, especially short fibers such as cotton yarns. It can also be used.

When a double yarn is used, the two single yarns constituting the double yarn are untwisted, the stretched elastic yarn is attached, and then the twist is recovered.

The shape is similar to that of two single yarns twisted together with an elongated stretchable yarn, but it is effective in imparting elasticity to yarns that cannot be achieved with single yarns, such as mercerized yarns made from cotton yarns. You can get beautiful thread with this. In addition, the stretchable yarn may be a single spandex yarn, or an elastic yarn such as a spliced yarn with a suitable yarn such as nylon yarn in the form of a covering or splicing yarn, or a material made of materials such as nylon or Tetron. A variety of elastic or stretchable stretchable yarns may be used at will, such as crimped yarns or crimped yarns that are stronger than woolly nylon.

Example Next, embodiments of the present invention will be described with reference to the drawings.

First, in the embodiment shown in FIG. 1, the spun yarn (Tl) is fed from a supply source (not shown) through a supply roller (1), and the elastic yarn is wound onto a hollow bobbin (2) that supports the elastic yarn bobbin (2). It passes through the inside of the spindle (3), first passes through the false twisting device (4), and then passes through the take-up roller (5) to the winding section (not shown).
Wind it up so that it rolls up.

And a flyer (6) in which the elastic yarn (T2) from the elastic yarn bobbin (2) is installed coaxially with the bobbin spindle (3).
The fibers are fed through the fibers so that they are fed into the spun yarn (T1) at the false twisting device (4). That is, the false twisting device (4) includes a hollow false twisting spindle (4a) and a false twisting pin (4b), and the spun yarn (T1) passing through the bobbin spindle (3) and the bobbin (2) The stretchable yarn (T2) that is let out through the flyer (6) is passed through the false twisting spindle (4a) so that they are aligned and engaged with the false twisting pin (4b), and then the take-up roller (
5).

Here, the bobbin spindle (3) is rotated by a drive belt (7) or the like. Then, the rotation of the bobbin spindle (3) is transmitted to the shaft (111) via the timing pulleys (8), (9) and the timing bell (101), and the rotation of the shaft (111) is transmitted to the timing pulleys (121-[131 and the timing belt). lll1l'r through the false twisting spindle (
4a) and the timing pulley (15) +
(161 and a timing belt (L) to the flyer (6), etc.) in conjunction with the bobbin spindle (3) and in the same direction with the false twisting spindle (4a). ) is actively rotated to regulate its rotation.In this case, an appropriate constant difference is provided between the rotation of the bobbin spindle (3) and the rotation of the flyer (6), and the rotation of the flyer (6) is controlled. For example, while the bobbin spindle (3) rotates 10°Ooo times, the flyer (6) and the false twisting spindle # (4a)
It is assumed that the number of rotations is 10,050 times to 101,100 times. In addition, the elastic yarn bobbin (2) carries the elastic yarn from beginning to end.
It shall be wound to a certain length per circumference.

By doing this, the spun yarn (T1) is untwisted by the rotation of the false twister M (4) and becomes a non-twisted or almost non-twisted fiber bundle, which reaches the false twist pin (4b). At this untwisted place, the stretchable yarn (T2) is tied together.At this time, the stretchable yarn (T2) is maintained in a constant stretched state due to the rotation difference between the bobbin spindle (3) and the flyer (6). At the same time, since the rotation of the flyer (6) and the rotation of the false twisting spindle (4a) are almost the same, the spun yarn (Tt) is untwisted until it reaches the false twisting pin (4b). The spun yarn (T1), which has been untwisted in this way, passes through the false twisting pin (4a) in an open-side shape with almost no winding around the fiber bundle. ), and after passing through the false twisting bin (4a), the original twist is recovered by its rotation, and the desired yarn is passed through the take-up 90-ra (5). The spun yarn (TI) is wound into a winding section as a gold thread. Here, the spun yarn (TI) is untwisted throughout the false twisting device (4) and becomes a non-twisted or almost non-twisted fiber bundle to improve its tensile strength. However, there is no risk of cutting due to active feeding by the co-feeding roller (1).

Thus, when the spun yarn (TI) is a single yarn, as shown in Fig. 5, when the single yarn (T1) is untwisted (A), the elastic yarn (T2) is attached in a stretched state. After being knitted, the stretchable thread (T2) is recovered based on the twist, and as a result, the stretchable thread (T2) appears to be covered by the single spun thread (Tl). Elastic thread (T
2) is tightly integrated in the form of being wrapped around the single spun yarn (TI), so that the single spun yarn (T1) loses its original texture and strength without being exposed to the outside. It is formed into a good doubled yarn (T) that imparts elasticity without being stiff. In addition, when the spun yarn (To) is a double yarn, as shown in Figure 6, when the double yarn is untwisted from the two single yarns that make it up (A), the stretchable yarn is (T2) is attached in an elongated state and then restored to its original twisted state.As the elastic thread (T2) contracts, the elongated thread (T2) covers the two single threads in a twisted state. Then, they are tightly integrated, and in this way, the double threads are given elasticity and are formed as a doubling thread (T).

In the embodiment shown in FIG. 1, the flyer (6) is actively rotated and the elastic thread (T2) is actively stretched from the bobbin (2) by a rotation difference between the flyer (6) and the rotation of the bobbin spindle r31. Since it can be fed out while controlling the condition, it is advantageous when using a yarn with high stretch elasticity and a very large stretch rate, such as a single spandex yarn, as the stretch cotton yarn (T2).

Next, in the embodiment shown in Fig. 2, the elastic thread (T
This embodiment differs from the embodiment shown in FIG. 1 in that the flyer (6) for feeding guide (2) is allowed to rotate freely without being actively rotated to restrict rotation. In this case, the elastic thread (T2) is transferred from the rotating bobbin (2) to the flyer (6).
The bobbin (2) is unrolled passively in a state where it is almost fully stretched due to the resistance of the 1rL-bobbin spindle (3). By setting, the rotation of the fryer (6) is controlled by the false twisting spindle (4a).
) can be maintained approximately the same as the rotation. Therefore, elastic yarn (T
2) When using crimped yarns that do not cause problems even when stretched to the maximum limit, or elastic yarns whose degree of elongation is controlled by adding or covering spandex yarn with a suitable thread such as nylon. This method is good for

Next, the embodiment shown in FIG. 3 is as follows: - A twist stopper (181f: set with one spun yarn (T1)) comprising a twist stopper pin (18a) between the bobbin spindle (3) and the false twister (4); Then, after being engaged with the lightning bolt (T2) and the full twist stopper pin (lea), it is passed through the false twisting device (4).

In this case, the spun yarn (T2) is untwisted between the twisting pin (18a) and the false twisting device (4), and the stretchable yarn (T1) is attached in a stretched state and the yarn is doubled. - the distance W1 between the twisting pin (18a) and the false twisting device (4); By making it as short as possible and setting it smaller than the fiber length of the spun yarn (T1).

This can prevent the spun yarn (T+) from being cut due to untwisting, and eliminates the need to provide the supply roller (1) as in the embodiments of FIGS. 1 and 2.

Next, in the embodiment shown in FIG. 4, when the flyer (6) is actively rotated, the rotation is directly linked to the false twisting device (4). Then, the rotation of the false twisting device @(4) is controlled from the shaft 1D to the timing pulleys a21-a and 31.
and another intermediate shaft (
19), and from between these shafts via another timing pulley i20+ + C1l and the timing belt 123, by making it possible to replace the timing pulley t20) with one having a different number of teeth as appropriate.
This allows the number of twists and draft rate to be adjusted by exchanging the timing boolean ao+, without having to adjust the number of twists and draft rate depending on the bobbin thickness.

Effects of the Invention As described above, according to the method of the present invention, a ready-made spun yarn and an elastic yarn are wrapped in a fully spun yarn of a single stretch cotton yarn without impairing the texture and strength of the spun yarn, and almost all of the spun yarn is exposed to the outside. This is an excellent method that has become possible for the first time and easily, by piling the threads so that they are tightly integrated without being exposed.

[Brief explanation of drawings]

1 to 4 are perspective views showing different embodiments of an apparatus for carrying out the method of the present invention, and FIGS. 5 and 6 show different examples of doubling yarns produced by the method of the present invention, respectively. FIG. (Ti)---m-spun yarn (T2)---one stretch silk thread (T)---one bundle fl+---one supply roller (2+---one stretch cotton yarn bobbin+31---- ---Bobbin spindle! 41-----One false twisting device (4a)---One false twisting spindle (4b)---One false twisting pin +5] -----One take-off 90-ra ((31 ---------Flyer F181----One-twist locking device (18a) ---One-twist locking pin Patent applicant: 1) Special agent: Ken Shinmi Department, Figure 5, Garden 6

Claims (1)

[Claims] The spun yarn is untwisted using a false twisting device to make it into a non-twisted or almost non-twisted state, and a stretched yarn such as elastic yarn or crimped yarn is added to this, and after passing through the false twisting device, the above-mentioned spinning is performed. A method for producing gold thread using spun yarn and elastic yarn, characterized by restoring the twist in the yarn and shrinking the elastic yarn so that the appearance is a stretched net yarn covered with spun yarn.