JPH05302221A - Fluff-controlling device for spun yarn - Google Patents

Abstract

PURPOSE:To obtain high-quality spun yarns with decreased fluffs by introducing yarns into a specific area where two rotators are mutually superposed and by applying both false twist and chafing action on the yarns. CONSTITUTION:Yarn Y, which is fed from an air spinning nozzle, is introduced into an area where the main rotator 12 positively revolving around a shaft 11 as revolving shaft through a drive is superposed with the flange part 13 of a driven rotator 15. In this area, the main rotator and the flange part face to each other, revolving in the directions opposite to each other toward the yarn Y's traveling direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluff suppressing device for spun yarn obtained by an air spinning device.

[0002]

2. Description of the Related Art A conventional spinning device includes a draft device for drafting a sliver supplied from a can, an air spinning nozzle (false twisting device) for twisting the sliver drafted by the draft device, and a formed yarn. It is composed of a delivery roller composed of a delivery nip roller and a delivery roller, and a winding device that winds the delivered yarn. The spun yarn is formed between the air spinning nozzle and the delivery roller, and then wound by the winding device. . Many fluffs were formed on the surface of the conventional spun yarn thus obtained, which had a considerable influence on the quality of the product.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a spun yarn of high quality in which the fluff of the spun yarn obtained by an air spinning device, which is arranged on the yarn path on the downstream side of the delivery roller for the yarn supplied from the air spinning nozzle, is reduced. An object is to obtain a fluff suppressing device for spun yarn that can be obtained.

[0004]

Means for Solving the Problems A yarn is introduced into the overlapping portion of two partially overlapping rotating bodies that rotate in opposite directions toward the running direction of the yarn, and false twisting and rubbing action are applied to the yarn. And is given.

[0005]

[Function] The fluff generated on the yarn surface is wound around the core yarn to reduce the fluff.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a spinning device provided with a fluff generation preventing device of the present invention includes a back roller pair 1a, a third roller pair 1b, a second roller pair 1c mounted with an apron band, and a front roller pair 1d. A draft device 1, an air spinning nozzle 2 for twisting a sliver S drafted by the draft device 1, and a nip roller 3a and a delivery roller 3b for delivering the formed yarn Y.
And a delivery device 5 for winding the yarn Y sent from the fluff suppressing device 4 and the fluff suppressing device 4 of the present invention located further downstream thereof, and 6
Is a dust collector equipped with a suction pipe 7, 8 is a slack tube, 9 is a slab catcher, and 10 is a traverse device of the winding device 5. 20 is a take-up roller.

The pneumatic spinning nozzle 2 is composed of a first nozzle and a second nozzle which act on the yarn to make swirling flows in mutually opposite directions. The yarn exiting from the air-spinning nozzle 2 is basically composed of core fibers (core yarns) that are arranged substantially parallel to each other and wound fibers that are spirally wound around the core fibers.

However, in the present invention, as described above, the fluff suppressing device 4 of the present invention is provided on the yarn path on the downstream side of the feed roller 3 for the yarn Y supplied from the air spinning nozzle 2. As shown in FIGS. 2 and 3, the fluff suppressing device 4 includes a driving rotor 12 that positively rotates about a shaft 11 as a rotation shaft by a drive device (not shown), and a flange portion 1.
3 and a driven rotary body 15 pivotally supported by a swing arm rod 14, and the swing arm rod 14 swings so that the peripheral surface of the driving rotary body 12 and the peripheral surface of the driven rotary body 15 come into contact with each other. At this time, the one end surface 12a of the driving rotary body 12 and the one side surface 13a of the flange portion 13 of the driven rotary body 15 face each other, partially overlap each other, and rotate in the opposite directions toward the traveling direction of the yarn Y. It is configured.

One end surface 12a of the driving rotor 12
And the one side surface 13a of the flange portion 13 of the driven rotating body 15 form a slight gap 16 or a smooth surface so as to cause a slip with the yarn passing through the overlapping portion.

Therefore, the sliver S drawn out from the can (not shown) is drafted by the draft device 1 after passing through the trumpet guide 17, and then twisted by the air spinning nozzle 2 to form the spun yarn Y, which is spun. The yarn Y passes through the feed roller 3 and is falsely twisted by the fluff suppressing device 4 of the present invention, passes through the traverse guide 10 of the winding device 5, and is wound while being traversed.

The manufacturing process of the spun yarn Y formed up to the feed roller 3 will be described in more detail. The front roller 1d
A considerable portion of the sliver coming out of the fiber is bundled by false twisting by the second spinning nozzle, but some of the fibers have a rear end which is formed by the balloon of the first spinning nozzle in the direction opposite to the false twisting. It is still gripped by the front roller 1d and the tip is free. The fibers are wound around the bundle of bundled fibers in the direction opposite to the false twist by the action of the swirling air flow ejected from the balloon and the first spinning nozzle. This wound fiber is wound more and more strongly with a sufficient number of turns in the process of passing through the second spinning nozzle and false twisting.

The yarn Y being spun in this way is
The yarn Y travels while being ballooned (untwisted) between the air spinning nozzle 2 and the delivery roller 3, is then delivered from the delivery roller 3, and is then delivered to the fluff suppressing device 4, where the yarn Y In the area A that passes through the overlapping portion of the end surface 12a and the one side surface 13a of the flange portion 13 of the driven rotary body 15 and reaches the intersection with the imaginary line connecting the axes of the rotary bodies 12 and 15 from the introduction point of the yarn Y , Yarn Y
Is untwisted by applying a force in the untwisting direction to the untwisted yarn Y in the region B from the intersection with the imaginary line to the feeding point of the yarn Y, and is untwisted. The surface of the yarn Y is rubbed by the rotation of the yarn Y to return to the original state and the rotation of the driving rotor 12 and the flange portion 13, and the fluff 18 on the yarn Y is forced to the core yarn 19 as shown in FIG. To form a fluff-free yarn Y that is wound around.

As the contact pressure adjusting means between the thread at the portion where the one end surface 12a of the main driving rotor 12 and the one side surface 13a of the flange portion 13 of the driven rotary member 15 overlap each other,
As shown in FIG. 4, the flange portion 13 of the driven rotary body 15 is made of a flexible member such as rubber, and is normally formed in a flat plate shape by centrifugal force to rotate, but when it is necessary to increase the contact pressure, Is a roller 2 which moves forward and backward by a cylinder (not shown) on the back surface of the overlapping portion of the flange portion 13.
1, the roller 21 is moved forward to press and bend the flange portion 13 to increase the contact pressure with the passing yarn Y. Further, by adopting such a configuration, it is possible to prevent the wear of both disc bodies when the thread passing therethrough is broken. Further, in order to change the twisting direction of the fluff suppressing device 4, the flange portion 13 may be arranged on the other end surface 12b side of the driving rotor 12.

The physical properties of the yarn Y obtained by using the fluff suppressing device 4 of the present invention are shown in Tables 1 and 2.

[0016]

[Table 1]

[0017]

[Table 2]

As a result, the strong fluff suppressing device 4 of the present invention
It was found to be the same as or not higher than that in the case of not using, and a decrease of 30 to 50% for 1 mm fluff and a decrease of about 50% for 0.5 mm fluff.

[0019]

As described in detail above, the fluff generation preventing device of the present invention is characterized in that the yarn is provided in the overlapping portions of the two partially overlapping rotating bodies which rotate in the opposite directions toward the running direction of the yarn. Is introduced to give false twisting and rubbing action to the yarn, the yarn running while ballooning between the air spinning nozzle and the delivery roller is Introduced into the overlapping portion of the driven rotary body with the one side surface of the flange portion, a force in the untwisting direction is applied to the yarn, and then a force for returning the untwisted yarn to the original state is applied again. The fluff was easily wound around the core yarn, and a spun yarn of excellent quality without fluff could be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a spinning device equipped with the device of the present invention.

FIG. 2 is an enlarged perspective view of the device of the present invention.

FIG. 3 is a side view of the device of the present invention.

FIG. 4 is a front view of the device of the present invention provided with a contact pressure adjusting means.

[Explanation of symbols]

 Y yarn 1 draft device 2 air spinning nozzle 3 delivery roller 4 fluff suppressing device 5 winding device 12 driving rotor 13 flange 15 driven rotor 16 fluff 17 core yarn

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[Procedure amendment]

[Submission date] June 10, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

[0016]

[Table 1]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

[0017]

[Table 2]

Claims (1)

[Claims] 1. A spinning process in which a yarn is introduced into the overlapping portions of two partially overlapping rotating bodies that rotate in opposite directions toward the running direction of the yarn and imparts false twisting and rubbing action to the yarn. Yarn fluff suppressing device.