JPS63105123A - Production apparatus for conjugate yarn - Google Patents

Abstract

PURPOSE:To obtain conjugate fibers capable of spinning even when a high- tenacity yarn, e.g. metallic fibers, etc., is fed as a core fiber and having excellent uniformity, by providing a special guide in the final part of a drawing mechanism and constructing at least one roll of an yarn drawing roll group from a metallic roll. CONSTITUTION:In a production apparatus for conjugate fibers having a drawing mechanism 1 for covering fibers, two suction drums 8 in a parallel and close contact state mutually rotating in the same direction and an yarn drawing out roll 9 consisting of plural rollers (9a)-(9c) successively provided in the running direction of fibers, a guide 7 for joining core fibers 5 to covering fibers is provided just on the upstream side of front rollers 4 of the drawing mechanism 1 and at least one of the yarn drawing out roll 9 is constructed from a metallic roll.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a composite spun yarn in which core fibers are coated with fa fibers while being heated, and strong fibers such as metal fibers are used as the core fibers. The present invention relates to an apparatus for producing composite spun yarn, and more specifically, ultra-high strength yarn that has excellent functions and effects as a material for protective clothing and the like.

(Prior art) Various chemical fibers and synthetic fibers have been used in fields that take advantage of their respective characteristics, along with natural #i fibers. 6. Pongee is often twisted, mixed, woven, or mixed as needed.

Various attempts have also been made to produce composite spun yarn by spinning fibers for spinning and filaments of synthetically processed fibers using a spinning machine and heating them. This kind of composite yarn is used, for example, in
As shown in Japanese Patent Application No. 8748, a core yarn has been proposed in which a long A filament is used as a core fiber and a single short fiber for spinning is used to cover the core fiber. Therefore, it is natural that a wide variety of methods and devices have been devised for spinning these composite spun yarns, but usually ring, mule, or silospan spinning devices are used to spin the outer periphery of filament yarn into short fibers. This is done by covering it with

However, the above-mentioned spinning apparatus has a limit in its spinning capacity. That is, the yarn to be spun has gold II l as the core.
In the case of a strong composite yarn using a K* or the like, it is impossible to spin, or even if it is possible, it is extremely difficult and is accompanied by all kinds of problems.

As a result of our pursuit of a novel ultra-high tenacity yarn that has never existed before, the inventors came up with a composite spun yarn using strong and hard rotten fibers such as metal fibers such as stainless steel wire as a core of 3 m. As shown, it could not be spun using conventional spinning methods. The inventors of the present invention have conducted extensive research on devices that can spin this ultra-high strength yarn, and have found that the DREP method is appropriate.

The outline of this device will be briefly explained by referring to the description in Japanese Patent Application Laid-open No. 56-58218. As shown in FIG. It has two suction drums (8) that are closely juxtaposed to each other and rotate in the same direction, and the braided yarn (2) drawn by the drawing mechanism (1) is passed through the drawing mechanism Uυ and the opening roller αQ. The stretched and separated limb-covering iron pongee is supplied, and the winding is performed by rotation between two suction drums (8). That is, with this apparatus, a wide variety of composite spun yarns can be produced at high speed and reliably.

(Problems to be Solved by the Invention) The above-mentioned yarn manufacturing apparatus certainly brings unprecedented and remarkable effects in manufacturing all kinds of composite spun yarns. Regarding the production of yarn, various problems were involved in spinning. That is, when spinning a strong yarn using a strong fiber such as a metal fiber for the core la#l, when the yarn passes through a nl yarn pull-out roll formed of a rubber roll, the surface abrasion of the rubber roll is severe. This makes the yarn withdrawal speed and heating non-uniform.

The present invention makes it possible to spin ultra-high strength yarn with strong fibers such as metal a-pongee as the core, and also to stabilize the yarn drawing speed and heating. The purpose is to provide a device that can.

(Means for Solving the Problems) In order to achieve the above object, the yarn manufacturing apparatus of the present invention has the following configuration. That is, the following three components were sequentially arranged in the yarn running direction: a stretching mechanism for the coated fiber, two parallel suction drums rotating in the same direction in close contact with each other, and a yarn drawing roll consisting of a plurality of rolls. In a composite yarn manufacturing device, the core F! is placed immediately before the front roller of the stretching mechanism. The main feature is that a guide for merging the am and the covered fibers is provided, and at least one of the yarn drawing rolls is made of a metal roll.

In other words, the core! The core fiber that has reached the front roller in the drawing mechanism area through the fiber supply path and the covering fiber that has been fed from the drawing machine groove are overlapped by a guide placed just before the front roller, and the core fiber reaches the front roller in the drawing mechanism area. Immediately after leaving the
This is a yarn manufacturing device that twists coated fibers around the outer periphery of a core m fiber to form a single twisted yarn by rotating two suction drums.
This is an extremely excellent yarn manufacturing device that is capable of spinning high-hardness yarn, prevents wear on the surface of the yarn pull-out roll, and eliminates various problems caused by this.

Hereinafter, embodiments of the present invention will be described in detail based on drawing model ζ.

(Example) In Figures 1 and 2, (1) is drawn b3JA, (2
) indicates braided yarn. The stretching mechanism (1) uses a plurality of roll pairs having a circumferential speed that increases from the inlet to the outlet of the roving (2).
3 have been created.

WM Ha such as sliver drawn from can (3)
The bundle is stretched by the stretching mechanism (1)+ and reaches the front roller (4) in the stretching mechanism (1) area, while
Core fibers such as metal fibers (5) also serve as core fiber supply channels (6).
*It reaches the front roller (4) via (7a).

However, there is a guide (7) just before the front roller (4).
) p (7a) is provided, and the post-intermediate maintenance guide (
7a), the core fiber M (5) is supplied to the merging guide (7), and the drawn roving (2) is supplied onto the core fiber (5).

That is, in the merging guide (7), the rovings (2) are in a state of clawing at the core fibers (5).

On the extension line of the stretching 10)l), two parallel suction drums (8) closely rotating in the same direction are arranged side by side,
The core m fibers (5) and braided yarn (2) supplied to the above-mentioned merging guide (7) are sucked by the suction drum (8) immediately after leaving the nifb point of the front roller (4), The core P is heated while being heated by the rotation of the suction drum (8).
The structure is such that fleece of roving (2) is wound around J fiber (5). That is, core #I! 4 fibers (5) and roving (2
) The fleece is merged and arranged in the merging guide (7) provided on the front roller (4) and fed directly to the suction drum (8), making it easy to coat uniformly. Can be done. The composite spun yarn thus formed is drawn parallel to the axis of the suction drum (8) by yarn drawing rolls (9a)t (9b)* (9c) arranged on the end face of the suction drum (8). is drawn out. Thread drawing roll (9a)* (9b)* (90)
is a pair of rolls (9a) and t (9b) of the same shape and size that are arranged in close contact at right angles to the axis of the suction drum (8), and is in contact with the pair of rolls (9a) * (9b). It is formed by a roll (9c) disposed in the same direction.

The present invention provides this yarn drawing roll (9a)e (9b)p
It was discovered that the surface abrasion of (9c) hinders uniform coating, and efforts were made to prevent this abrasion.

Therefore, in the yarn manufacturing apparatus of the present invention, at least one of the yarn drawing rolls (9a)*(9b)t(9c) is made of gold 40-roll instead of the conventional rubber roll. For this, all three roles (9a)
* (9b) * (9o) may be used as a gold X roll, but tests have shown that this case has drawbacks such as increased driving noise.

The yarn drawing roll (9a)t (9b)n (9c)
However, the wear caused by the degree yarn αQ has the greatest influence on the yarn withdrawal speed and heating. Therefore, among the roll pairs (9a)*(9b) of the same shape and size, the roll (9a) is located on the suction drum (8) side.
a) must be a metal roll, and the other roll (9b
)s (9c) can be appropriately selected depending on the strength, hardness, etc. of the yarn.

That is, the core m pongee (5) and the covering a are securely overlapped by the merging guide (7) disposed immediately in front of the front roller (4).
The composite yarn αQ composed of the roving yarn (2), which is a fiber, is pulled out by yarn drawing rolls (sa) and (sb)t (9c), which have metal rolls (9a) on the side of the suction drum (8). The result is an extremely uniform coating.

(Effects of the Invention) As described above, the composite yarn manufacturing apparatus of the present invention easily makes it possible to spin ultra-high strength composite spun yarn using metal fibers such as stainless steel wire as the core A-fiber. The uniformity of the coating is extremely excellent.

In other words, it is a yarn manufacturing apparatus that can successfully eliminate the instability of heating and yarn withdrawal speed caused by wear of the yarn withdrawal roll, and can provide more reliable coating.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the yarn manufacturing device of the present invention, FIG. 2 is a side view of the same device, FIG. 3 (4), and FIG. 4 are explanatory diagrams showing main parts of the device, respectively. FIG. 5 is a side view of a conventional device that is the basis of the present invention. (1), (6)... 1 course of stretching, (2)... roving, (3)... can, (4)... front roller, (5)... core fiber, ( 6)...core fiber supply path, (7)...merging guide, (7a)...
... Core fiber guide, (7b) ... Thread guide,
(8)...Suction drum, (9a)* (9b)p (
9c) - Yarn pull-out roll, QO...composite yarn,
(b)...Drawer device, (6)...Coated a fiber,
α■...drive@electric motor, αυ...transmission belt,
αG...open q roller.

Claims (2)

[Claims] (1) A stretching mechanism for coated fibers, two parallel suction drums that rotate in the same direction in close contact with each other, and a yarn drawing roll consisting of a plurality of rolls are arranged in sequence in the yarn running direction. The composite yarn manufacturing apparatus is characterized in that a guide for merging core fibers and covering fibers is provided immediately before the front roller of the drawing mechanism, and at least one of the yarn drawing rolls is constructed of a metal roll. Composite yarn manufacturing equipment. (2) The yarn drawing roll includes a roll pair consisting of two rolls of the same shape and size that are arranged in close contact at right angles to the axis of the suction drum, and a roll puller roll arranged above the roll pair. 2. The composite yarn manufacturing apparatus according to claim 1, wherein the apparatus is formed of two rolls, and the roll located on the suction drum side of the pair of rolls is a metal roll.