JPS6352136B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for producing spun yarn.

[Conventional technology]

Blending different fiber materials to produce a single thread has been practiced for a long time, but traditionally, different fiber materials were blended in advance.
This was done by spinning blended fiber materials using a ring-type spinning machine. Alternatively, it is possible to combine and twist multiple yarns of different types into a single yarn, and by using these methods, it is possible to combine the characteristics of various fibers to produce yarns tailored to the purpose. This also allows the production of multicolored yarns.

[Problem that the invention seeks to solve]

According to the above-mentioned conventional method, for example, the obtained multicolored thread has a drawback that a plurality of colors are uniformly mixed, resulting in a monotonous thread with little variation. The present invention aims to solve such problems.

[Means for solving problems]

The present invention provides a method for manufacturing a spun yarn by introducing a fiber bundle into a drafting device and then introducing it into an air injection nozzle, in which a filamentous material other than the fiber bundle is introduced into the air injection nozzle without passing through the drafting device. It is characterized in that it is merged with the fiber bundle, passed through an air injection nozzle together with the fiber bundle, and then wound up.

[Effect]

After the fiber bundle comes out of the draft device, it is twisted and bundled by an air injection nozzle, and at this time, the thread-like material is also taken into the fiber bundle and twisted integrally to form a part of the spun yarn. .

〔Example〕

In FIGS. 1a and 1b, 1 indicates a back roller 2, a middle roller 4 having an apron 3,
A draft device includes a pair of front rollers 5, 6 is an air injection nozzle having a first nozzle 7 and a second nozzle 8 inside, and 9 is a delivery roller. The circumferential speeds of the rollers 2, 4, and 5 are the maximum for the front roller 5 and the minimum for the back roller 2, and due to this difference in peripheral speed, the fiber bundle S
Draft. Reference numeral 10 denotes a guide disposed between the back roller 2 and the middle roller 4. a first and second nozzle 7 in the air injection nozzle 6;
8 are arranged in order along the traveling direction of the fiber bundle S,
Compressed air flows swirling in opposite directions are applied to the fiber bundle S. The untwisted sliver, that is, the fiber bundle S after finishing the drawing machine, is introduced into the drafting device 1 as shown in the figure, and after being drafted to a predetermined thickness, it is further introduced into the air injection nozzle 6 to become a bound spun yarn, and the delivery roller 9 It is pulled out and wound onto a bobbin (not shown).

Furthermore, a false twisted machine yarn F of polyester filament is introduced together with the fiber bundle S into the air injection nozzle 6 as shown by the broken line, passes through the first and second nozzles 7 and 8 in order together with the fiber bundle, and passes through the delivery roller 9.
It is wound up through the Reference numeral 11 denotes a guide for guiding the processed yarn. Note that the processed yarn F is omitted in FIG. 1b.

In FIG. 2, the fiber bundle S is attached to the front roller 5.
After exiting the air, it passes through the air injection nozzle 6, and at this time, it is subjected to a turning force in the direction of arrow 12 by the compressed air flow of the second nozzle 8, and is false-twisted. This false twisting propagates to the vicinity of the front roller 5, twists the central portion of the fiber bundle S, and forms a core fiber. Further, the compressed air flow ejected from the first nozzle 7 causes the twisted fiber bundle to swirl in the direction of arrow 13, which is opposite to the direction of twisting, thereby forming a balloon B. This balloon B
As a result, the fibers on both sides that are not subjected to false twisting are wrapped around the twisted fibers. The fiber bundle in such a state is untwisted immediately after exiting the second nozzle 8, and becomes a bundled spun yarn consisting of a non-twisted or slightly twisted core fiber and wrapped fibers wound around the core fiber. The textured yarn F is false twisted by the second nozzle 8, but is also swirled by the balloon B, so that in the spun yarn Y1, a portion of the processed yarn F is present in the core fiber and most of the yarn is in the wrapped yarn. Like fibers, it wraps around the core fiber in a spiral shape.

Note that the balloon B produces a turning node at the inlet opening of the first nozzle 7 as shown in the second diagram,
Insert the processed yarn F from here.

Therefore, the appearance of the spun yarn Y1 finally obtained is as shown in FIG. 3, and the winding direction of the processed yarn F changes between the S twist direction and the Z twist direction with a certain period as shown in FIG. changing direction alternately. That is, in the yarn Y1, a part of the processed yarn F becomes a core fiber and a first part becomes a wrapped fiber, and the wrapped portions appear randomly along the length direction of the yarn Y1, and the wrapping direction alternates. do. If the fiber bundle S is white and the processed yarn F is black, the obtained yarn Y1 will be a multicolored yarn in which white and black are randomly mixed.

In each of the embodiments described above, the thread-like material to be joined to the fiber bundle S was the processed thread F, but the thread-like material may be other materials such as spun-dyed rayon yarn, colored tape, roving, etc. A material different from S not only in color but also in material may be used. Moreover, two or more thread-like materials may be used at the same time.

〔Effect of the invention〕

According to the present invention, the spun yarn to be manufactured is obtained in a state in which different types of thread-like materials are alternately wound with S twist and Z twist, and the alternation interval between S twist and Z twist is However, since the outer fibers are wound by an air jet nozzle, the winding becomes random due to changes in the jetted air flow over time, and therefore yarns with a great variety can be produced.

[Brief explanation of drawings]

Figures 1a and 1b are side views and plan views showing the method of the present invention, Figure 2 is a perspective view for explaining the method of the present invention, and Figure 3 shows the appearance of yarn Y1 obtained by the above method. 4 are diagrams showing changes in the winding direction of the processed yarn F in the yarn Y1. 1...Draft device, 6...Air injection nozzle,
S...Fiber bundle, F...Processed yarn (thread-like material).

Claims (1)

[Claims] 1. A method for manufacturing a bundled spun yarn by introducing a fiber bundle into a drafting device and then sequentially introducing it into first and second air injection nozzles having mutually different swirling directions, the method comprising:
A filamentous material other than the fiber bundle is placed between the draft device and the first air injection nozzle.
The knot of the balloon is generated by the swirling flow caused by the air injection nozzle, and is inserted near the entrance of the first air injection nozzle, so that the thread-like material is propagated by the twisting caused by the second air injection nozzle. The filament is introduced into the first and second air injection nozzles along the core fiber, and the filament is wound around the core fiber as a wrapped fiber, and the winding direction is S-twist and Z-twist. A method for producing a spun yarn, characterized by producing a bound spun yarn that changes alternately.