JP2008202184A - Slab yarn, production apparatus thereof, and woven / knitted fabric using the slab yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slab yarn capable of being produced by a usual spinning machine without requiring a special spinning frame and having the irregularity of natural feeling, a method for producing the same and a woven or knitted fabric by using the same. <P>SOLUTION: This slab yarn having a natural feeling is produced by installing a concealing member at a collector in a roved yarn side of a front roller of the spinning frame, stopping the tip end of a part of the fiber of the roved yarn and bending the same so that the bent fiber becomes as a nodule and also the nodules are developed at random. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a finely spun yarn, and more particularly to an apparatus for producing a slab yarn and a woven or knitted fabric using the slab yarn.

  In general, in a ring spinning machine, a draft of the short fiber to be fed is drafted, the resulting fleece is fed from the front roller, and the fleece is twisted by the rotation of the spindle rotating at high speed, and the snell wire and the ring It is wound and spun into a wood tube inserted into the spindle through a traveler.

  On the other hand, natural thick and uneven yarns are popular in the market as yarns with handmade texture and appearance. Conventionally, various manufacturing methods have been studied for this uneven yarn. For example, there is a method in which a back roller in a draft part of a spinning machine is directly connected to a variable-speed servo motor, and the rotational movement of the back roller is appropriately changed during spinning by the output of a computer or the like. Thereby, the draft magnification can be changed, and a fine spun yarn in which thick yarn portions and fine yarn portions are mixed at random can be manufactured.

  Further, as a device that gives natural unevenness, Patent Document 1 (Japanese Patent Laid-Open No. 7-268728) discloses a spinning machine that gives unevenness of 1 / f fluctuation. As a method for imparting unevenness, the surface speed of any of the front roller, middle roller, and back roller constituting the draft part is changed.

  On the other hand, in Patent Document 2 (Japanese Patent Application Laid-Open No. 11-350265), a multi-material yarn is held by holding a multi-material yarn and allowing only a single yarn to pass through so that the various raw materials are continuously spun. A spinning machine is disclosed.

  In Patent Document 3 (Japanese Patent Application Laid-Open No. 2006-225814), a card sliver containing a lot of short fibers is used as a roving yarn, and the roving yarn is supplied to a spinning machine as a spinning yarn, which is combined with a normal fiber roving yarn. Is disclosed.

JP-A-7-268728 JP 11-350265 A JP 2006-225814 A

However, the method of Patent Document 1 is close to a natural feeling, but the configuration of the spinning device is complicated. Further, when the speed of the front roller is changed, the spinning speed of the fine spinning is changed, so that the spindle rotation is also changed. This further complicates the mechanism.
Moreover, although the apparatus of patent document 2 is spinning continuously from various raw material yarns, it is not a thing of the idea of creating a slab yarn, and the raw materials of different yarns are connected successively one by one. It is to be used as a thread.
Moreover, since the method of patent document 3 uses a short fiber as a raw material of nonuniformity, there exists a restriction | limiting of requiring two or more types of rovings.

  The present invention has been conceived from such a situation, and does not require a special spinning machine, and can be manufactured with a normal spinning machine, and has a natural feeling unevenness, a manufacturing method thereof, and a yarn thereof. The woven or knitted fabric used is intended to be provided.

    As a result of intensive studies to achieve the above object, the present inventor attached a shielding member to the collector on the coarse yarn side of the front roller of the spinning machine, and stopped and bent the tip of a portion of the fiber of the coarse yarn. As a result, it was found that the bent fiber becomes a node, and that the slab yarn having a natural feeling can be formed by randomly generating the node, and the present invention has been made.

That is, the present invention
<1> A slab yarn in which a bent fiber is twisted together with short fibers aligned in the length direction of the yarn, and the thickness of the yarn changes randomly in the length direction of the yarn,
<2> A slab yarn manufacturing apparatus comprising a collector disposed on a coarse yarn side of a front top roller and a bottom roller of a spinning machine, and a shielding member provided at an opening of the collector,
<3> The slab yarn manufacturing apparatus according to claim 2, wherein the shielding member is attached so that a lower end of the shielding member is located at a position of several mm from a lower surface of the collector.
<4> The apparatus for producing a slab yarn according to <3>, wherein a plurality of protrusions are provided on the roving yarn side of the shielding member.
<5> Woven knitted fabric using the slab yarn according to <1>,
I will provide a.

  According to the above means, the following operation can be obtained.

  Spinning yarn is made by repeatedly doubling and drafting sliver and roving yarn. Draft refers to pulling a sliver or roving yarn from the lower speed of two pairs of rollers having different surface speeds and pulling at a higher speed. As the sliver and roving yarn pass between the pair of rollers, they are pulled and become thinner, and at the same time, the fibers are aligned. By repeating this draft, the degree of parallelism of the fibers can be increased, and the thickness unevenness (hereinafter referred to as “thread unevenness”) that can be formed in the yarn can be reduced. Also, the yarn count can be made uniform by so-called doubling, in which a plurality of supply side slivers and roving yarns are combined into one on the discharge side when drafting.

  In the present invention, by bending a part of a single fiber having the same orientation and thickness, the uniformed coarse yarn can be dispersed, and a thick knot-like portion is formed in the yarn, and a thin portion is formed. It is possible to make slab yarn with a natural feel.

  The bending in the present invention means that the single fiber is prevented from advancing by the shielding member and is bent in a direction opposite to the traveling direction, or a state in which the substantially straight single fiber is bent. Say. Moreover, the nodal shape in the present invention refers to a portion thickened by a bent fiber and single fibers gathered around the fiber.

According to the present invention, a special spinning machine that can change the surface speed (rotational speed) of the roller is not required, and spinning can be performed with a normal spinning machine by simply replacing the collector.
In addition, since the collector is simply changed to a normal spinning machine, it is easy to change the setup for production of normal yarn and slab yarn.
The yarn unevenness produced by the present invention has a natural handmade style with random thickness and period.
Moreover, when the woven fabric using the slab yarn is dyed, the woven fabric is shaded, and the woven fabric has a natural tone.

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

FIG. 1 is a slab yarn of the present invention, the yarn thickness is English cotton count = 23, the shielding member is attached to the bottom surface of the collector (h =) 3.0 mm, and the distance between the front roller and the apron is It is about 2.2 mm away from the front roller than usual. FIG. 2 is a slab yarn of the present invention, the yarn thickness is English cotton count = 23, the shielding member is installed at the bottom surface of the collector (h =) 3.5 mm, and the distance between the front roller and the apron is set. It is about 1.5 mm away from the front roller than usual.
FIG. 3 shows the relationship among the collector, front roller, roving yarn, and slab yarn of the present invention.
FIG. 4 shows details of the collector of the present invention. Reference numeral 1 denotes a collector, reference numeral 2 denotes a shielding member, reference numeral 3 denotes a roving yarn, reference numeral 4 denotes fine spinning, reference numeral 5 denotes a front top roller, and reference numeral 6 denotes a front bottom roller. A pair of the front top roller 5 and the front bottom roller 6 is called a front roller.

First, the manufacturing process of a slab yarn is demonstrated using FIG. 3 (a), (b).
FIG. 3A is a view of the collector 1 and the front roller as viewed from the roving yarn 3 side. The roving yarn 3 passes through the gap 1b of the collector 1 and reaches the nip point N. As a countermeasure against wear at the nip point N, the front roller moves in the axial direction to the left and right, and the collector 1 can also move to the left and right on the shaft 1c so as to synchronize with the left and right movement.
FIG.3 (b) is seen from the horizontal direction of the longitudinal direction of a roving yarn and a slab yarn. On the left side of the figure, there is a roving yarn, a back roller and the like (not shown) taken out from the shinobu, and the roving yarn is guided between the front rollers while being drafted. The roving yarn exiting the front roller is wound around a snell wire, a ring, and a rotating tube yarn (not shown) while being twisted.

The roving yarn in which the direction and thickness of the single fiber are aligned is pulled from the left side to the right side in FIG. 3B while being drafted. The roving yarn 3 becomes the fine spun yarn 4 through the nip point N between the front rollers. Before the roving yarn 3 enters the nip point N, the collector 1 prevents the roving yarn 3 from spreading in the width direction.
A part of the single fiber whose tip is in the upward direction in the figure collides with the shielding member and is prevented from progressing. The single fiber that has been prevented from progressing is bent and the progress of the surrounding single fibers is prevented, so that the part where the single fiber is reduced becomes a thin thread, and the part where the block of the blocked single fiber has progressed. It becomes a knot-like thick thread.

FIG. 4 shows a collector used in the present invention. A shield member is attached to the collector 1 used for normal spinning, and as described above, the progress of some single fibers is stopped. The height (h) from the lower surface of the collector 1 to the lower surface of the shielding member 2 is preferably changed depending on the thickness of the fine spinning yarn or the thickness of the roving yarn.
When the shielding member 2 is mounted at a low position, the rate at which the tip of the single fiber is blocked by the shielding member 2 increases, and thread breakage frequently occurs. When the shielding member 2 is high, the tip of the single fiber blocks the shielding member 2. The rate at which it is produced is reduced and it is no longer slab yarn.

In addition, if a plurality of thin needle-like protrusions are provided on the surface of the shielding member 2, it is easier to stop the single fibers, which is preferable to a flat surface.
The thickness of the shielding member 2 should just be attached to the clearance between the front roller and the apron 7 (or the second roller), and is preferably about 2 mm including the protrusions.

Further, the frequency and size of the occurrence of knot-like unevenness can be controlled by changing the distance between the front roller and the apron.
FIG. 5 is a perspective view of a roller portion of the spinning machine. When the apron 7 is moved to the back roller 8 side, the roving yarn 3 becomes more free between the apron 7 and the front roller, and the number of single fibers contacting the shielding member 2 increases.

  EXAMPLES Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example.

[Example 1]
A coarse yarn of 195 gelen / 5 yards was spun under the following conditions.
Spinning count: English cotton count 23
Twist number: 30 (T / in)
Spindle speed: 6600 rpm
Total draft: 20.34
The apron was separated from the front roller side by 2.2 mm.
(1) Bottom surface of shielding member: 4.0 mm
(2) Bottom surface of shielding member: 4.5 mm
(3) Lower surface of shielding member: 3.0 mm
(4) Bottom surface of shielding member: 3.5 mm
(5) Bottom surface of shielding member: 2.5 mm
When the shielding member is 2.5 mm or less, there is a problem that thread breakage increases. When the shielding member exceeds 4.0 mm, unevenness becomes gentle and the value as uneven yarn is lowered.

[Example 2]
A coarse yarn of 195 gelen / 5 yards was spun under the following conditions.
Spinning count: English cotton count 23
Number of twists: 20 (T / in)
Spindle speed: 7800 rpm
Total draft: 20.34
The apron was separated from the front roller side by 2.2 mm.
(1) Lower surface of shielding member: 3.0 mm
(2) Bottom surface of shielding member: 3.5 mm
(3) Lower surface of shielding member: 4.0 mm
(4) Bottom surface of shielding member: 4.5 mm

When the coarse yarn of 450 gelen / 5 yards was carried out in the same manner as in Examples 1 and 2, uneven yarns similar to those in Examples 1 and 2 could be produced.

FIG. 1 is a first example of a slab yarn of the present invention. FIG. 2 shows a second example of the slab yarn of the present invention. FIG. 3 is a schematic view of the collector and front roller of the present invention. (A) The figure seen from the collector side. (B) The figure seen from the shaft side of the front roller. FIG. 4 shows an example of the collector of the present invention. FIG. 5 is a perspective view of a roller portion of the spinning machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Collector 2 Shield member 3 Coarse yarn 4 Fine spinning 5 Front top roller 6 Front bottom roller 7 Apron

Claims (5)

A slab yarn characterized in that a bent fiber is twisted together with short fibers aligned in the length direction of the yarn, and the thickness of the yarn changes randomly in the length direction of the yarn. An apparatus for producing a slab yarn, characterized in that a collector disposed on a coarse yarn side of a front top roller and a bottom roller of a spinning machine is provided with a shielding member at an opening of the collector. The slab yarn manufacturing apparatus according to claim 2, wherein the shielding member is attached so that a lower end of the shielding member is located at a position of several mm from a lower surface of the collector. The slab yarn manufacturing apparatus according to claim 3, wherein a plurality of protrusions are provided on the roving yarn side of the shielding member. A woven or knitted fabric using the slab yarn according to claim 1.