JPS58136839A - Production of spun yarn - Google Patents

Abstract

PURPOSE:A part or most of the fiber bundle fed from the front rollers is broken by the balloon formed by the end-opening nozzle and separated, then passed through the false twister to produce a spun yarn with satisfactory yarn strength, even from fibers of short length. CONSTITUTION:The fiber bundle S fed from the front rollers 3 is partially broken and separated with the balloon fromed by the end-opening nozzle 5 whose air pressure is lower than that of the false twisting nozzle 4. Thus, the twisting in the false twister 4 is effected only to the remaining bundle S1. The tentatively separated yarn S2 is made to spiral around the fiber bundle S1 in the balloon direction. After passing through the false twister 4, the yarn S2 rotates by the untwisting action in the untwisting direction to make the fiber bundle S1 rotate and untwist, resulting in strong binding and twisting the fiber bundle S1.

Description

[Detailed description of the invention] Fu Brother Ming is about the method of creating young children.

The 1ml method of Ring Q is better than the history of Yogiri technology.

Since then, it has been the mainstream until his current appointment.71. did it.

In recent years, the spinning speed has been dramatically increased compared to this ring-spun method, and in order to obtain a spun yarn with an outer I:M + texture, etc., which is different from ring-spun yarn, the o-non-end spinning method and false twisting have been developed. Kiriteiho, Kasuri (branch technique) of Junpo-ji Temple, which originated in one province.However, contrary to the increase in the number of Yoseihe and branches, Itoyun's Ikimitsu and Kasuri
It is inferior to ring-spun yarn in terms of its strength, and the length of the yarn is not as good as that of Shiba et al.

In other words, the rotor-type O-1, which is a typical oven-end spinning method,
In the end-spinning method, the fibers that have accumulated on the periphery of the rotating rotor are twisted and pulled out from the center of the rotor. When it comes to water, the core of the rain is strongly υ1, and the outer surface of the song is deep! & The arsenal has gone all the way to the inside, and the threads have become blurry, and the IJ is old-fashioned, with the fibers of the ring being young and thread-like. Tohonari#nai-1 Therefore, the fiber that is sprinkled at the end is a bridge fiber that simply wraps around the outside of the thread, and is called Ratsuno Fino.
71% 'Causes a decrease in A force and fluff.

In addition, there is a method called the false twist spinning method or the bundled spinning method, for example, in Japanese Patent Publication No. 52-43257. The heating wave γ is generated by the device ′i#-
The fiber #: group and the fiber group with unbound ends from the false twists existing around this υ end-splicing fiber group are transferred together with a parallel wire to the false-twisting point υ, and the fibers are heated at the core. Point J: When the fiber group reaches the untwisting area after passing through, the above υ-end fiber group becomes a parallel fiber bundle in the center, and the parallel edge m bullet with both ends unwrapped is wound on the outside #! Become a group.

In addition, in Japanese Patent Publication No. 55-4857, a single fiber was placed in the false-twisted area and then twisted into a fiber bundle.IrJJ
Alternatively, by applying intense, passive, or extreme force such as friction due to ballooning, the fibers at the top of the fiber bundle are pulled out and made parallel to the yarn axis, as in a false twisting device. The parallel fibers drawn out in the untwisting region of the first member passing through the twisting point most likely become the wrapped fibers of the fiber bundle and become Keitobo M yarn. Since the outer wrapping fibers utilize parallel fibers in the heating region before the '+0 l heating point, the tightening force due to the wrapping fibers is weak.

In other words, in the bundle spinning method, the yarn structure is determined by wrapping a parallel fiber bundle consisting of most of the fibers with some of the fibers around the corners of the bundle. It is made up of two parts: a part of the fiber group that is wrapped around the fibers.Therefore, if the fiber length is relatively long, there is no problem because the yarn strength is high, but in the case of short fibers, the yarn strength is sufficient. There is a drawback that there is no rL.

The present invention reduces the drawbacks of the above-mentioned yuzu spinning methods and provides fL
The purpose of the present invention is to provide a spinning method for obtaining young filaments having optical fiber strength even when the fiber bundles are short fibers.
A J-shaped four-fold machine is fed by an integrated front roller, and after the front roller, the ends of the fibers of the bundle are rotated with a turning force smaller than the optical turning force of the false twisting part. The balloon actively separates i41 [L, some of the fiber bundles receive false twisting from the false twisting part, and the above separation process occurs.
While the other end of the fibers in the rL part is restrained with an o-ler, the tip of the fiber bundle is actively twisted in the direction opposite to the direction of false twisting using swirling airflow and balloons. After passing through a false twisting device, a strong twist is applied to the fibers. 11 of the device to be used,
There is a draft device consisting of a bank roller (1), a middle loaf (2), and a 70 roller (3). A false twisting device (4) such as an air injection nozzle that constitutes an IJ32 twisting section behind the pillon roller (3)? Furthermore, an end opening nozzle (5) having a Z-air injection port is arranged tangentially in the inner hole between the false twist +ff1 (41) and the upper i-pillon roller (8), and the False-twisting device vi A bottle-type mechanical false-twisting device is also possible since the purpose is only to impart false twist to the fiber bundle, but air injection is recommended for reasons such as ease of starting spinning and not damaging the fibers. A pneumatic false twisting device with a nozzle is convenient.

(6) is a roller for thread pulling.

In such an apparatus [ffi, as shown in FIGS. 2, 3 and 4, a front roller (3), such a delivery fiber bundle (8), and an end opening nozzle (5) are used.
The balloon is cut and separated by the nozzle (5) whose air pressure is smaller than that of the nozzle (4). The cutting and separation may be performed on a part or most of the fiber bundle. (Figure 4 (a)) IJI using false twisting device (4)
Only the fiber group (sl) left after I-twist CJ is bamboo fL, and some or most of the separated fiber group [S2] is cut,
The barley is immediately twisted with strong heating power without being separated.
At this time, most of the fibers being cut and separated are wrapped around the rear end portion of the fibers (sl) that are being cut and separated in the opposite direction to the false twist direction (S twist in the figure). Freon 1
The foam is gripped at the second and first points of 0-ra (3).

The behavior of the fiber powder is further explained in detail in Figure 5.The fiber bundle coming out from the nip point (Q) of the front roller (3) is cut and separated in the interior of the nozzle (5). 2, the yarn turns at high speed and raises a stable balloon (B1), which connects the nozzle inlet (7) and front roller (3).
A secondary balloon (B2) is generated between the nip point (Q,) of 75 as shown in the figure, and this secondary balloon (B2) absorbs part or most of the fiber bundle coming out from the front roller (3). There are parts where the camera cuts off sharply. Note that the direction in which the yarn is turned is the direction in which the false-twisted and heated fiber bundle is untwisted (S-twist), and the false-twisting device (4
The turning force of the yarn by the nozzle (5) is smaller than the turning force of the yarn by the nozzle (5). That is, the relationship of P L''<P 2 is established, where the air pressure of the nozzle (5) is 1p1 and the air pressure of the nozzle (4) is B2.

Once separated, the fibers (B2) are retracted into the nozzle by the suction force at the U nozzle (5) inlet, or are re-twisted and heated by the secondary balloon yarn before reaching the nozzle inlet. The fiber bundle (SL) is wound in the balloon direction, that is, in the opposite direction to the S twist of the fiber bundle (81).

Of course, even after passing through the nozzle (5), the separated fibers are wound and plucked in the same direction υ1j as described above by the air flow swirling at high speed in the nozzle chamber.

In this way, the fiber bundle passing through the end opening nozzle (5) passes through the false twisting device (4) until some or most of the fibers are deposited on the S-twist fiber bundle in the Z-twist direction. Moves with a wrapped double structure.

Therefore, after passing through the false twisting device (4), it is subjected to an untwisting action,
The thread wrapped in 2 twists is further rotated in 2 directions, rotating the S-twist fiber bundle, untwisting it, and tightening it tightly to create just S-twist 2.
It acts to twist until it becomes twisted.

The spun yarn (Y) produced in this manner has a two-twisted optical structure.

Furthermore, there is also an end opening nozzle (5) that creates a balloon in the fiber bundle sent out from the front roller and actively cuts and separates a part or most of the fiber bundle.
As shown in Figure 5, there is a constriction part σ on the inlet and outlet sides.
(8) is provided. That is, the front roller) and the nozzle (5) are
The one-dimensional balloon 032] in between becomes stable.

T siber (Po9 ester 65ts, combed cotton 85%
) 880 gel/6 yards 2, average fiber length 27111 8, spinning count NegQ 4, draft rate 198 times 5, spinning speed 150 m/i 6, pressure condition Pi (air pressure of nozzle (5)): 8.0 S/-F2 (air pressure of false twisting device (4)): 4.0 S/1yI17, distance between front roller nip point and nozzle (5) entrance 6n
) 9 wIk Tenacity value U35 of spun yarn obtained under each setting condition above
5P CCV'%>, U%tlilO, 8%, Th1n
24 pieces/1000m %Th1ck 16 pieces/r
The result was 56 O00mnep/1000m, and a spun yarn with high strength and comparable to ring yarn was obtained.

Example 2゜1, Sliver 180 gel/6 yards2, Average fiber length 27'Im 8, Spinning speed Ne45 4, Draft rate 200x5, Spinning speed 185 m/si 6, Pressure condition PI': 2.4 The yarn strength of the spun yarn obtained under the conditions of 6 points or more (m) between the nip point of the controller and the nozzle entrance is 210P
(cV10%), ty%7) S12.5% I'm
It was as strong as rilling thread.

Example 8゜1, Worsted roving 2-ring yarn o, sy/m2, average fiber length 7611B 3, Gino output 1i$ Nm404 Dofufu total rate
301 sounds 5 cuts i1j M uf l 30 m / yni
a + tonne (m) 15B 1: The spun yarn obtained by F under the conditions of Lt has a yarn strength of 2
150y (CV89J) f=s)ffl.

As described above, in the present invention, the staple fiber bundle is fed in a line from the front roller, and immediately after the front roller, the tip of the integral fiber bundle is actively cut and separated by a rapidly rotating yarn balloon. However, some of the fiber bundles were subjected to one false twisting session from the twisting device, and the bent ends of the separated and twisted portions were held together with a flint roller.
The tips of the fibers are twisted into a false-twisted fiber bundle. The fibers are actively wound in the opposite direction to the twisting direction of the false twisting using the flow and the balloon, and after passing through the false twisting device, the fibers are untwisted. Since the yarn is made to have a high resistance to rust, the strength of the yarn is high.In particular, in the present invention, regardless of the length of the yarn in the supply slat, it is possible to use a spun yarn with a high strength. We were able to overcome the shortcomings of the Ohno-end spinning method and the +bii silent bundle spinning method.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a spinning apparatus for carrying out the present invention, FIGS. 2 and 3 are diagrams explaining the spinning principle of the method of the present invention, and FIG. 4 is a perspective view showing the behavior of yarn according to the method. FIG. 5 is an enlarged view of the same part. (3)...Front roller (4)...False twisting device (
5) ... End otoning nozzle (8) ... Stagle fiber bundle

Claims (1)

[Claims] The staple fiber bundle is fed from a front roller in an open state, and immediately after the front row 2, the tips of the fibers of the integral fiber bundle are rotated by a yarn balloon that rotates with a turning force smaller than the yarn turning force of the false twisting section. At the same time, the false twist from the false twist imparting part is transmitted to some of the fiber bundles, and the other end of the fibers in the separated part is restrained with a Freon Fa-ra. The tips of the separated fibers are wound around another false-twisted fiber bundle in the opposite direction to the false-twisting direction using swirling air currents and balloons, and after passing through 5 tl of false-twisting, untwisting is performed. A method for producing a spun yarn, characterized in that the wound fibers described above are further heated in the winding direction.