JPS58109631A - Preparation of spun yarn - Google Patents

Abstract

PURPOSE:To obtain spun yarns at a high speed, by passing two fibrous bundles of no twist in parallel through holding rollers for intermittent holding and then contacting endless belt type false twisting bodies, doubling the fibrous bundles, and self-twisting the bundles into one yarn. CONSTITUTION:Two fibrous bundles (Y1) and (Y2) fed from front rollers (a) are passed through holding rollers (C1) and (C2) for intermittent holding while kept at a given distance, and then passed between crossing contact points of false twisting body (e) having crossed and contacted running belts (e1) and (e2). The resultant fibrous bundles (Y1) and (Y2) are then doubled by a yarn guide (f), taken off by delivery rollers (g1) and (g2) and then wound by a winder (h). S twists are given to both fibrous bundles (Y1) and (Y2) above the false twisting body (e), and Z twists are given to the fibrous bundles (Y1) and (Y2) under false twisting body (e). The intermittent holding of the holding rollers (C1) and (C2) in cooperation with the S and Z twists permits the S and Z twists to remain alternately in the almost the same phase in the fibrous bundles (Y1) and (Y2) under the false twisting body (e), and the doubling of both fibrous bundles (Y1) and (Y2) gives one yarn (Y) by the self twisting.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides S(
This relates to a method of manufacturing a spun yarn by alternately twisting the right) twist and the 2 (left) twist, and twisting the two fiber bundles together using self-twisting.

Traditionally, the majority of methods for producing spun yarn have been based on the so-called ring trapper method, which uses twists generated by a trapper rotating on a ring due to the rotation of a spindle. The untwisted yarn drafted by the loaf drafting device and coming out of the front loaf is propagated and twisted to form yarn.

In this method, the speed at which the yarn is sent out, that is, the production amount per spindle A/spindle, is regulated by the number of rotations and the number of twists of the spindle. In addition, the appropriate number of twists is set depending on the count of the spun yarn, but the appropriate number of twists for general spun yarns is 400 to 1200, which is 11, and the maximum rotation speed of the current spindle μ is 12,000 rotations per minute, so it is the yarn delivery speed.

That is, the spinning speed is about 6 to 5011/min.

Generally, there are many spinning speeds of about 20 m/Iflin.

On the other hand, even in the case of open-end methods, which have increased in recent years, 6
The spinning speed of low production amount of about 0 tray/1 ain is good. As described above, the main reason why the spinning speed is low is that the spun yarn is twisted by actual twisting. Therefore, it requires a large amount of energy, personnel, machinery, land, buildings, etc. required for operation, and has the disadvantage that the manufacturing cost is inevitably high.

The present invention enables high speed spinning to overcome nine or more drawbacks. The purpose of this invention is to provide a method for producing spun yarn using self-twisting.

That is, in the present invention, two untwisted fiber bundles, which are dofted by a conventional method and spun at a constant interval from the front loaf, are repeatedly gripped intermittently by a pair of intermittent gripping loafs that rotate nine times. The waste fiber bundles are introduced into a false twisting body consisting of a pair of endless fibers (A/) running in cross-contact contact with each other, and heated in one direction to impart alternate S and Z twists to the waste fiber bundles. This method of producing a spun yarn is characterized in that: first, both twisted fiber anchor wheels are combined to form one yarn by self-twisting, and the yarn is taken off.

The configuration of the present invention will be explained in detail below.

Figure 1 is a simplified perspective view of the case in which the manufacturing method according to the present invention is carried out, and Figure 2 is its side view. Two spun untwisted fiber bundles (Yl
), (Ya) are fed between a pair of intermittent gripping loaves (at) (at) through a fiber bundle guide (h,) (bt) mounted below.

Here, one lobe (C8) of the pair of intermittent grasping loaves (at) and (C*) is a normal circular loaf,
As shown in FIG. 2, a part of the surface of the other lobe (C3) has a hatched portion ((14) cut out.

The fed fiber bundles (Y, ), (Ya) are
The fiber bundle guide ((b
), (ichi) and then fed into the false twisted body (el) while keeping a constant interval.False twisted body (e)
consists of a pair of endless belts (μ) (at) and (am) that run while intersecting with each other on a part of one side, and the delicate bundles (Y; ) and (Ya) are endless belts. (
e, ) and (e-) into the cross-shaped contact point. The endless beam (tv) (el) is moving in the direction of the arrow (N+) and - (at) is moving in the direction of (N,), respectively.
The fiber bundle (Yl) introduced into the cross-shaped contact point and (
Y, ) is securely held and wrapped at the cross-shaped contact point and false twisted in one direction without slipping. Then, in the waste fiber bundle, the S twist is propagated in the upper part of the false twisted body, and the 2 twist is propagated in the lower part, and at the same time, due to the cooperative action of the intermittent gripping of the intermittent gripping loaf (Ql)l (cm), fiber bundle (Y,) at the bottom of the twisted body (e);
(Ya) are alternately given an S twist and a 2-twist with substantially the same phase. Next, the twisted waste fiber bundles (Y, ) and (Y, ) are combined by a yarn guide '<r), and are twisted into one yarn (1 ) are formed, delivery loaf (g+), (g*)
It is picked up from IC and rolled up by a winder.

By the way, in the manufacturing method of the present invention, a pair of intermittent gripping loaves (c+) are attached at the upper part of the cross-shaped contact area of the false twisting body (8).
, (-) is the fiber bundle (Yl) passing through the point,
(Ys ) is intermittently pressed and gripped to prevent the propagation of twist, so...
East twists of S and z are applied alternately to the fiber bundle (Yl
) (Ya) are twisted alternately in S and Z to form a spun yarn (A). That is, 9, for example, the distance between the front loaf (b)) and a pair of intermittent gripping lobes (c+), (C-, and the intermittent gripping loaf (at), (as) and a pair of endless gripping lobes A/) ( The distance to the false twisted body (8) consisting of el ) and (ex ) is the same distance.

And the fiber bundles ("L") and (S) have false twisted bodies (e)
It is assumed that 1000 times of false twisting has been applied.

In this case, the fiber bundle (Yl) above the cross-shaped contact point of the false-twisted body (e), (Y-) each has an S twist of 10
00 times, lower fiber/bundle (Yl), (Ys) ec
i! When the Z twist passes 1000 times (C-), that is, when it passes between the two p-fibers (C+) and (C-) that are not pressed together, the twist reaches the front loaf -). As a result, the fiber bundles (Yl) and (Yl) are given enough twist to withstand the spinning force. This instantaneous twist is 500 S twists between the front loaf (b)) and the intermittent gripping loaf (am), cat), the intermittent gripping loaf (at), (cm), and the false twisting body (el This results in 500 twists of 8 twists between the fiber bundle (Y
It is given to a entry (Ya). Delicate bundle (Yl),
(Ym) is an intermittent grasping loaf (at), (cm)
When you are being held tightly in the darkness.

The instantaneous twist is the residual g when passing through the notch (c's).
The sum of 500 IS twists, the intermittent grip low → (at) + (伽), and the 8 twists of 1000 times accumulated during ), the actual twist is 8 twists, which is a difference of 500 times from the reverse twist of 1000 times, and is attached to the fiber bundle ff1), (Y-.The above S twist and 2 twists are Fiber bundle (
Ys) and (Ys) are alternately and repeatedly applied, and both delicate bundles (Yl) and (Ys) are combined to form a spun M yarn (7) by self-twisting.

As described above, the method for producing spun yarn of the present invention is as follows.

This method applies false twist to two fiber bundles while keeping a constant distance between them using a false twisting body consisting of a pair of beads.
There is little slippage, and it is possible to reliably apply twist to the running fiber bundle, and in addition, by working together with the intermittent gripping lobes, alternate S and Z twists can be applied, and self-twisting allows for S and Z twists at high speed. Since spun yarns having alternating patterns are formed, it is possible to achieve a higher production amount than the conventional ring-to-fpel method, and it is a useful method for producing spun yarns.

Next, the present invention will be explained in more detail with reference to Examples.

Example Uses 4-inch F-length polyester cotton roving.

It was obtained by applying a draft of 60 times using an 8Kr 160-01 drafting device. Two untwisted fiber bundles (Yj), (Yt), equivalent to bn@hand, are spun from the front loaf box of the apparatus shown in Figs. 1 and 2, and fiber bundle guides (b+), (bs) are spun. After that, it was introduced into a pair of intermittent gripping rollers (oi) and (-) below 181. The surface of the lobe (C+) is made of synthetic rubber, and the diameter is somm 9 and the width is 20.
mm, and the radius of the circumferential surface of the roller gull (roller gull) is 40 mm.

It is a stainless steel roller with a circumferential radius of 37.5 mm for the remaining circumference of 180". In other words, the fiber bundle (
Yl>, (Ya) is pressed and gripped, and not gripped at the notch (c's) with a depth of 5 mm on the remaining half circumference. Note that the fiber bundle guide (tlk input (bs)) is an intermittent gripping loaf (ci)
), (am ) at a position 7 m above.

Next, the fiber bundles (Ya) and (Y snow) that have passed through the intermittent gripping loaf (01) and (Q*) are transferred to the fiber bundle guide (dt
1 of the false twisted body (e) with 4.5 scratches below the λ (city)
A pair of endless forms) 4') (et).

It is guided into the cross-shaped contact point (e9). The endless bet (81))t, IIJlIJ[(Yl)
, (Yffi) The side r into which the force is inserted intersects at an intersection angle of 115''.
00V company nτ゛ is running and hitting. Fiber bundle (Ys), (Y
a) is false-twisted by the *false-twisted body 4e), passes through the yarn guide (fl), becomes the spun yarn (1), and a pair of delivery loaves <Jp) below it 8al, (g
t), passes through this and is wound up by a winder shaft) at a sowing speed of 150 m/field 1n.

In this case, the front roller) and the intermittent gripping rollers (as) and (-) are connected 1:0.5'li, and the intermittent gripping rollers (o+) and (am) are connected to a pair of dead-beam 90-f (gt ), (gm ) 1%, a pair of delivery loaves (g+ ), (g snow) and wind dern opening ec2%
, each gave an overfeed. ) The resulting spun yarn has a spacing of up to 24.8ffi.
0 times/emf) 0 was a 60th twin self-twist spun yarn with S twist and 2 twist applied alternately.

[Brief explanation of the drawing]

FIG. 1 is a simplified perspective view of an apparatus used in the manufacturing method of the present invention, and FIG. 2 is a side view thereof. (Yl), (Yl) - fiber bundle, (Y)...spun yarn, customer...front row? , (b+)*
(bx), (dt), (dt) -am fiber bundle id, (ci) -circular lobe, (C)...partially notched loaf, ring)...notch of (C8)*< et-...False twisted body (at included (et)...Endless net, (f)
... Yarn guide, Qll-... Winder. Patent applicant Unitika Co., Ltd.

Claims (1)

[Claims] (1) Draft it by a conventional method and introduce it from the front roller into a false-twisted body consisting of a pair of endless belts that run in cross-contact contact with each other, and then heat both of the delicate bundles. A method for producing a spun yarn, which comprises applying alternate S and Z twists to each of the fibers, and then combining the two twisted fibers to form one yarn by self-twisting and taking it off.