JPS607725B2 - Composite yarn manufacturing method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and an apparatus for producing a composite yarn or covered yarn formed by combining a continuous yarn with a spun yarn.

A method for producing covered yarn by supplying short fiber bundle yarns and continuous fibrous material to a spinning device using air and remote zero force using a rotating spinning chamber is disclosed in Japanese Patent Publication No. 10260/1983 and Japanese Patent Publication No. 49/1989. This method has been proposed in Publication No. 238 and the like.

However, the methods described in these publications use open-end spinning compared to the conventional method for producing composite coated yarns, but the target coated yarns in these methods are short core yarns (filaments). It is a covering-like object wrapped with spun yarn made of fibers.

Furthermore, when carrying out these methods at high speed, it is important to improve operability and minimize troubles at the time of yarn breakage in terms of operability, but nothing is shown about this.

In particular, a system in which a seed yarn is supplied to the paper yarn chamber at the start of spinning, after which a spun yarn is formed, and then a continuous yarn is supplied, which is combined with the spun yarn and pulled out downward from a yarn discharge pipe. It is necessary to perform this process smoothly and without any trouble, but this is difficult with the method disclosed in the above publication. Therefore, the present inventors have conducted extensive studies on improving the operability when starting or resuming production of a composite yarn in which a continuous fibrous material is wound around a spun yarn using an open-end spinning device. Therefore, the object of the present invention is {1} to obtain a covered yarn in which a filament yarn (continuous fibrous material) is wound around a spun yarn, or a composite yarn having a structure in which a filament yarn and a spun yarn are combined. The purpose is to provide the optimal weaving method.

The present invention also relates to (1) a system for resuming spinning in the event of yarn breakage, which involves appropriately combining the timing of each supply of staple fibers and continuous fibers and the supply of seed yarn, and furthermore, the stopping of the supply of air flow used for these supplies. Therefore, the object of the present invention is to provide a highly efficient paper production method and apparatus for a filament covered yarn using a twisted yarn of a filament yarn and a spun yarn or a spun yarn as a core yarn as described in item {1) above. These objectives are achieved by employing the following method and apparatus.

That is, in the spinning chamber of an open-end spinning device, which is equipped with a staple east supply pipe, a continuous yarn feed pipe, and a rotary weaving yarn chamber, the staple east and continuous yarn are fed into the spinning chamber. In the method of starting or resuming the production of
A seed yarn is supplied to the paper yarn chamber by a forced air flow from a hollow yarn discharge pipe provided on the rotation center axis of the paper yarn chamber, and a staple bundle is supplied from the supply tube to the staple yarn. The staple fibers constituting the east are combined with the seed yarn and pulled out from the grade yarn chamber as spun yarns, and then a continuous yarn is fed from the yarn feeding tube to join the spun yarns. This is achieved by shifting the positions of the yarn supply pipe entrance and the discharge pipe entrance of the yarn in the spinning chamber to perform the above-mentioned combination. In addition, there is a rotating spinning chamber in which the staple fibers can be re-concentrated by centrifugal force;
A staple east supply pipe attached to said chamber for supplying aligned and untwisted staple fibers, on its axis of rotation for spinning out refocused staple and ejecting it from said threading chamber. an open-end spinning device including a spun yarn discharge pipe attached to the spun yarn and a continuous yarn feed pipe attached to the spinning chamber for combining the spun yarn and the continuous yarn; This can also be achieved by providing a device in which the spun yarn discharge pipe and the continuous yarn feed pipe that enter the room are provided so that the cross sections of their closed portions do not face each other. In particular, when the center points of the two cross sections are projected perpendicularly to a plane passing through the largest folded part of the yarn chamber, the distance between the center points on that plane is preferably set at 5 or more distances, thereby achieving the object of the present invention. effectively achieved. Furthermore, embodiments will be described in detail with reference to the drawings.

FIGS. 1 to 4 are a thread route diagram and a cross-sectional view showing an embodiment of the present invention. First, FIGS. 1 and 2 show a case where a continuous yarn supply pipe is installed across a yarn discharge pipe. First, the short fibers 2 are supplied from the supply pipe 4 toward the inner wall surface of the spinning chamber 8. FIG. 5 shows how the seed yarn is initially supplied and the continuation yarn of the spun yarn is started. Air flow is conveyed from the compressed air supply nozzle 15 below through the hollow part of the yarn discharge tube between two seed yarns. It enters the class yarn chamber together with A and moves toward the largest light section 11 of the spinning chamber due to the centrifugal force of the weaving yarn chamber 8. Here, it is combined with the staples supplied from the supply pipe 4 and deposited to form the spun yarn 7. Next, it is combined with the continuous filament 1 supplied from the supply pipe 3 at a combination point 11 . Here, the yarn chamber 8 is pivotally supported by a bearing 12 and rotated by a belt 10. Further, the discharge pipe 14 is supported by the fixed shaft 13. In addition, the distal end portion 9 of the discharge pipe 14 extends into the spinning chamber.
is adapted to impart a curling effect to the composite yarn 18 on its surface. Composite yarn is delivered by delivery rollers 16, 17
is pulled out downward and wound up into a package 19.
The distance 1 between the center of the continuous yarn supply pipe outlet end 6 and the central axis of the discharge pipe 9 is preferably 1.Z5 willow, and by separating it in this way, the filament yarn can be twisted smoothly on the surface of the spun yarn 7. , it is possible to obtain a good filament covered yarn without any trouble of yarn breakage. In addition, the supply pipe etc. are fixed to the fixed part village 5. Next, Figures 3 to 4
The figure shows another embodiment, in which the supply pipe 3 is at a constant distance 12 from the tip 9 of the discharge pipe 14,
Furthermore, in order to prevent the air flow from the pipe 3 from colliding with the air flow from the discharge pipe 14, the outlet portions are not completely opposed to each other.

By doing this, it is possible to smoothly and reliably carry out the restarting of the paper thread upon yarn breakage and the formation of threads in the weaving threads, as explained in accordance with FIG. That is, in FIG. 5A, as the spinning chamber rotates, air flow A flows from the supply pipe 3.
' flows in, and when this and the air flow A flowing in from the discharge pipe 14 collide with each other, it is difficult to introduce the seed yarn 20. However, in the present invention, the seed yarn reaches the maximum folding part and becomes a spun yarn. Since the air flow flowing upward from the discharge pipe is stopped when the spun yarn starts to form, as shown in the opening of FIG. air flow is not an obstacle to composite thread formation. In addition, in carrying out the method of the present invention, filament yarn 1
It is preferable that the yarn feeding tension is set to 2 tare or more and 25 ta or less.

In particular, if the number is less than 2, the filament yarn tends to be twisted irregularly while floating on the surface of the spun yarn, making it impossible to obtain a good yarn. Moreover, if it exceeds 25 ta, the spinning of the spun yarn itself will be inhibited due to the relative relationship with the graining force of the spun yarn, and this will cause frequent yarn breakage problems, which is not preferable. Further, in the present invention, various filament yarns, spun yarns, combinations thereof, etc. can be used for the continuous yarn material 1.

As an open-end paper machine, it is possible to change the staple bundle supply method in various ways, and those equipped with a combing roller method, an ejector method, etc. can be used. In a case other than the embodiment of the present invention, unless the length of the seed yarn or the type of the seed yarn is changed, the yarn splicing will not be successful, and even if it is successful, there will be a large loss of time required for the yarn splicing to be successful.

Thus, by employing the method and apparatus of the present invention, the following effects are exhibited in the production of composite yarn.

○i The filament-like material 1 is successfully combined with the spun yarn 7 formed in the spinning chamber at the coalescence point 11, and a yarn structure in which the filaments are combined and covered on the surface of the spun yarn 7 can be stably obtained.

(2) Since the resulting covered yarn is twisted on the surface of the spun yarn, it can have the following characteristics that cannot be obtained with 100% spun yarn. {i) It has an anti-pill effect and a strength-enhancing effect.

To yarn has a good appearance and has good surface quality even when made into a cloth band.

N Good process passability in weaving, knitting and weaving processes, etc.

(3i) The seed yarn carried by the air flow for supplying the seed yarn moves smoothly to the maximum folding part in the paper yarn chamber, and yarn splicing can be carried out in a short time and without mistakes.

{41 The collision between the airflow from the yarn feeding pipe and the airflow from the discharge pipe prevents the airflow from being turbulent. If there is, the filament-like material 1 cannot be supplied).

Next, the effects of the present invention will be demonstrated using examples.

Example In the paper yarn mode of FIGS. 3 and 4, the staple east 2 was acrylic fiber "Trelon'' i. mother, 44 side was used as the continuous yarn 1, polyamide multifilament yarn 7 plate-24
fil was used.

The weaving conditions are: the rotation speed of the spinning chamber is 3200 pm, the inner diameter of the tip exit of the yarn feeding pipe 3 is 4 mm, the outer diameter of the tip 9 of the yarn discharge pipe 14 is 1 mm, and the inland diameter of the tip 9 of the yarn discharge pipe 14 is 2 mm. 5 skin, pneumatic pressure of the seed yarn supply nozzle 15 is 0.1k9', the thread count of the spun yarn 7 is 1/48 (metric type count N), the ratio coefficient K for the spun yarn 7 is 4.0, the filament yarn 1 is Yarn feeding tension: 8, distance between the center axis of the yarn discharge pipe 14 and the center axis of the yarn feeding pipe: 1
He had a 2-IQ skin. The insertion of the seed yarn and the introduction of the filament at the start of spinning were both smooth, the spun yarn 7 and the filament yarn were well combined, the filament was twisted into the spun yarn at the union point 11, and almost no yarn breakage was observed. .

It was confirmed that the obtained covered yarn had a good yarn appearance, had a luxurious feel that was not found in conventional spun yarns as a knitted fabric, and could be applied to various uses as a composite material of filament and spun yarn.

[Brief explanation of drawings]

1 to 4 are a thread path diagram and a sectional view showing an embodiment of the present invention. FIG. 5 is a sectional view illustrating a thread restart system when a thread breaks. 1... Continuous fibrous material, 2... Short fiber east, 8... Paper yarn chamber, 3... Yarn feeding pipe, 14
... Yarn discharge pipe, 15 ... Compressed air supply nozzle, 18 ... Composite yarn. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1. An open-end spinning device comprising a staple bundle supply pipe, a continuous yarn feed pipe, and a rotating spinning chamber, the yarn being fed in the spinning chamber. Feeding the staple bundle and the continuous yarn material to the spinning chamber of the spinning device in which the respective cross sections of the tube opening and the hollow yarn discharge tube opening are not facing each other, and starting or restarting the production of the composite yarn. In the method, a seed yarn is supplied to the spinning chamber by a forced air flow from a hollow yarn discharge pipe provided on the rotation center axis of the spinning chamber, and a staple bundle is supplied from the supply pipe to The staple fibers constituting the bundle are refocused at the largest diameter part of the spinning chamber, the seed yarn is bonded to this, and the seed yarn is pulled out from the spinning chamber as a spun yarn, and then a continuous yarn is supplied from the yarn feeding tube. A method for producing a composite yarn, characterized in that the spun yarn is combined with the spun yarn. 2. A rotating spinning chamber capable of refocusing staple fibers by centrifugal force, a supply tube for a staple bundle engaged with said chamber for supplying arranged and spread staple fibers to said spinning chamber, a spun yarn discharge tube mounted on its rotating shaft for spinning staples and discharging them from the spinning chamber; and a spun yarn discharge tube engaged with the spinning chamber for combining the spun yarn and the continuous yarn. In an open-end spinning device that includes a spun yarn discharge pipe that opens into the spinning chamber and a yarn feed pipe for the continuous yarn,
A composite yarn manufacturing device characterized in that the cross sections of the openings are provided so as not to face each other.