JP2964061B2 - Twisting method and twisting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twisted yarn which gives fluctuations having a correlation with the twist of the yarn.

[0002]

2. Description of the Related Art Conventionally, a single strand is twisted, or
In the twisting process (twisting process), a cam mechanism and a computer are used to create twists and twists into woven and knitted fabrics. The dyeing process produces shades of color to express uneven dyeing. Was. In this twisting step, a ring twisting machine, a double twister, an Italian twisting machine, a covering machine, a false twisting machine and the like are used.

[0003]

SUMMARY OF THE INVENTION The present invention solves the following problems. <B> The conventional twisted yarn has a natural unevenness by changing the twist of the yarn at random, but the change is random compared to a yarn having a natural unevenness spun by hand. Therefore, it is very artificial and lacks a natural feeling, and does not give a comfortable feeling to people. <B> In the present invention, the twist of the yarn does not change randomly, but changes with a correlation. In particular, when the correlation has 1 / f fluctuation, the yarn having a natural unevenness can be industrially manufactured. The point is to manufacture. In the present invention, “1 / f fluctuation” means that the power spectrum having the frequency component f is proportional to 1 / f ^k , and k has a value near 1.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a yarn which gives a person a natural comfort.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a twisting method for twisting one or many yarns. In the twisting method, the magnitude of a signal having a 1 / f fluctuation is adjusted according to the number of twists. A twisting method, or a twisting machine for twisting one or many yarns, comprising: a feed roller for drawing in the yarn; and a spindle for receiving the yarn sent from the feed roller. A twisting machine or a feed for drawing in the yarn, wherein the number of twists of the 1 / f fluctuation is given to the yarn by making the number of rotations of the feed roller correspond to the magnitude of the signal of the series having the 1 / f fluctuation. Roller, and a spindle for receiving the yarn sent from the feed roller, wherein the rotation speed of the spindle is 1 / f
1 /
f twisting machine characterized by imparting the number of twists of fluctuation,
Alternatively, a feed roller for drawing in the yarn and a spindle for receiving the yarn sent from the feed roller are provided, and the number of rotations of the feed roller and the spindle is set to 1 / f.
1 /
(f) A twisting machine characterized by imparting a twist number of fluctuation.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. <A> Overview of the embodiment The present invention, when twisting the yarn 11, uses 1 /
By giving a change in f fluctuation, a change in twist of the yarn 11 has 1 / f fluctuation. This makes it possible to mass-produce a machine-yarn having a 1 / f fluctuation correlation with a change in twist of the yarn 11 and giving the same feeling as a yarn spun manually. The yarn 11 is a spun yarn or a filament.

<B> Twisting Machine The twisting machine 1 is a device for twisting one or many yarns 11 to form a twisted yarn. The twisting machine 1 embodying the present invention is schematically shown in, for example, FIG. 1 and includes a plurality of motors, for example, a feed motor 21 and a spindle motor 22, and can control each of the motors independently. . The feed motor 21 is used to drive the feed roller 31. For example, the rotation speed of the feed roller 31 can be determined by giving a predetermined rotation speed to the feed roller 31 via a belt or a gear and adjusting the size and number of gears. In addition, spindle motor 2
The tin roller 32 is rotated by using the
1 can be given any rotational speed. These motors can be used in common as needed, and the rotation speed of the rollers can be adjusted by a converter such as a belt or gear.

<C> Feed Roller The feed roller 31 has a predetermined rotation speed, and draws in one or many yarns 11 together. The method of pulling in the yarn 11 is performed by sandwiching and rotating the feed roller 31. The drawing speed of the yarn 11 is determined by the diameter and the rotation speed of the feed roller 31.

<D> Spindle The yarn 11 sent from the feed roller 31 is twisted by the rotation of the spindle 41 and wound around a bobbin. Actually, since the twist of the yarn generally can withstand post-processes such as weaving and knitting, and affects the feeling of the woven fabric and the knitted fabric, the degree of twist, that is, the twist coefficient shown in the following formula 1 Can be expressed.

(Equation 1)

[0010] Even with the same yarn count, increasing the twisting coefficient increases the number of twists, resulting in a stiffer yarn. Decreasing the twisting coefficient decreases the number of twists, resulting in a bulging, softer yarn. Except in special cases, the twist coefficient is 2.5-4.5. When trying to obtain a yarn having the same feeling with a different count, the twist number can be set according to the count while keeping the twist coefficient constant. The twist is determined by the length of the yarn sent from the feed roller 31 and the number of twists applied between the yarns. Twisting can be changed by keeping one of them constant while changing the other. In order to increase the twist with the same count, the feed roller 31 is kept at a constant feed and the rotation of the spindle 41 is increased, or the rotation of the spindle 41 is kept constant and the feed roller 31 is rotated.
Can be reduced, and both provide the same result.

[0011] <e> 1 / f fluctuation present inventors, Toshimitsu Musha the 1 / f fluctuation is the first time in the world knowledge that gives a comfortable feeling of special to humans, the Japan Society of Applied Physics Journal 19 8 5 years 42 9 p. To page 435, "Biological information and 1
/ F fluctuation ", and published by the Japan Society of Precision Machinery 19
A paper on "Biological control and 1 / f fluctuation" was also published in Vol. 50, No. 6, 1984. The outline of this paper is "1 / f fluctuation is a fluctuation that gives a comfortable feeling to humans, and the reason why the 1 / f fluctuation gives a comfortable feeling is that the fluctuation of the basic rhythm of the human body is like 1 / f. In other words, humans get tired of receiving the same stimulus continuously, and on the contrary, stimuli that change too much are rather uncomfortable. Thus, the fluctuation that appropriately combines the two is 1 / f fluctuation. " Also, in Kodansha Blue Backs “World of Fluctuations”, “for example, rhythm phenomena shown by living organisms such as heart rhythm, clapping, and the α rhythm seen in the firing cycle of nerve cells and brain waves are basically 1 / f It is known that a living body has a sensation when it receives as a stimulus the same type of fluctuation as the 1 / f fluctuation of such a biological rhythm as a stimulus. " Fluctuations (fluctuations) exist in the natural world in various ways. For example, those that give a comfortable feeling to humans, such as the babble of a brook or the natural breeze, are as follows.
The strong wind that causes anxiety such as a typhoon deviates from the 1 / f fluctuation.

<F> Motor control FIG. 2 is a block diagram for controlling each motor for twisting the yarn 11. As shown in FIG. Feed motor and spindle motor speed setting device 61, 1 / f fluctuation signal generator 62, and yarn 11
The signal from the twist number setting device 63 is processed by the controller 6 to control each motor via the driver 64. Feedback is applied to each motor via the speed detector 25 to control the rotation speed. Motor speed setting device 61
Thus, the speed of each motor can be set to a predetermined value, and by giving a signal from the 1 / f fluctuation signal generator 62 to that speed, 1 / f fluctuation can be given to the rotation speed of the motor. Also, the yarn 1 is set by the twist number setting device 63 of the yarn 11.
If the number of twists is set to 1, 1 / f
The yarn 11 having fluctuation is twisted.

<G> 1 / f fluctuation signal The 1 / f fluctuation signal is a random number sequence x ₁ , x ₂ , x ₃ ,.
, And n coefficients a ₁ , a ₂ , a ₃ ,..., _An calculated and y ₁ , y ₂ , y ₃ ,. Here, y _j is expressed by Expression 2. Where y ₁ , y ₂ ,
The numerical sequence y ₃ ,... has a 1 / f spectrum (for details, see Corona Publishing Co., Biosignal, Chapter 10 “Biological rhythm and fluctuation”).

[Equation 2] y_j= X_j+ (1/2) x_j-1+ (1 × 3 / (2²× 2! )) X_j-2  + (1 × 3 × 5 / (2³× 3! )) X_j-3+ ... + (1 × 3 × 5 × ... × (2n-1) / (2^n-1× (n-1)! )) X_{j-n + 1}

<H> 1 / f fluctuation signal generator The 1 / f fluctuation signal generator 62 shown in FIG. 2 generates a random number sequence x in a first step using, for example, a computer, and generates a random number sequence x in a second step. , A linear transformation is performed by sequentially calculating the n coefficients a stored in the storage device to obtain a numerical sequence y. Since this numerical sequence y has a 1 / f spectrum, 1
The numerical value sequence y is converted into an electric signal as a / f fluctuation signal and output as a motor control signal. For example, a large value in a numeric sequence
By associating with a high potential, the rotation speed of the motor can be increased and the number of twists can be increased. In addition, a numeric string y
A method such as numerical control for controlling the number of rotations of the motor with the value of? When the inertia of the control system of the twisting machine 1 such as a motor is large, twisting may be performed by reducing the level of the 1 / f fluctuation control signal as necessary.

<Re> Control of twist As a method of giving 1 / f fluctuation to the yarn 11, the twist can be changed by controlling the feed motor 21 while keeping the spindle rotation constant. For example, the speed at which the yarn 11 is taken in by the feed roller 31 is 1 / f
When the fluctuation is given, the twist of the yarn 11 fluctuates to be strong or weak, and this fluctuation has a characteristic of 1 / f fluctuation. The take-in speed of the feed roller 31 can be adjusted by controlling the rotation speed of the feed motor 21. Therefore, the twist of the yarn 11 is 1
To give the / f fluctuation, a signal of the 1 / f fluctuation is given to the rotation control of the feed motor 21, and the twist of the yarn 11 can be changed by the rotation of the spindle 41.
On the other hand, by making the feed roller 31 constant and giving a 1 / f fluctuation signal to the rotation control of the spindle motor 22, twist of the 1 / f fluctuation can be given to the yarn 11. Alternatively, it is possible to provide 1 / f fluctuation even if both motors are controlled simultaneously.

[0016]

According to the present invention, the following effects can be obtained. <B> The twist of the yarn does not change randomly, but changes with a correlation, and the correlation has 1 / f fluctuation. it can. <B> A woven fabric or a knitted fabric woven using a yarn provided with 1 / f fluctuation in the twist of the yarn also has a 1 / f fluctuation, and particularly, a tactile sensation due to the 1 / f fluctuation of the twist. It is characterized by its lightness and shade after dyeing, and it can give a person a special feeling of comfort and aesthetic appearance. <C> Yarn having a natural unevenness spun by hand can be industrially manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of a main part of a twisting machine.

FIG. 2 is a block diagram for driving a twisting machine motor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Twisting machine 11 ... Thread 21 ... Feed motor 22 ... Spindle motor 31 ... Feed roller 32 ... Tin roller 41 ... Spindle 6 ... Controller

──────────────────────────────────────────────────続 き Continuing from the front page (72) Kazumi Muraoka, Inventor 2-4-2 Kitakyuhoji-cho, Chuo-ku, Osaka-shi, Osaka Nisshinbo Industries Co., Ltd. Osaka branch office (72) Inventor Yuki Niwa Entering Miai-cho, Okazaki-shi, Aichi Including 45 Nisshinbo Industries, Ltd. Miai Plant (72) Inventor Yasuo Nakano Including 45 characters in Miaicho, Okazaki City, Aichi Prefecture Including Nisshinbo Industries Ltd., Miai Factory (58) Fields investigated (Int.Cl. ⁶ , DB name) D02G F-term theme code 4L036

Claims (4)

(57) [Claims] 1. A twisting method for twisting one or many yarns, comprising twisting the yarns in accordance with the number of twists according to the magnitude of a signal of a series having 1 / f fluctuation. . 2. A twisting machine for twisting one or many yarns, comprising a feed roller for drawing in the yarn, and a spindle for receiving the yarn sent from the feed roller, wherein the number of rotations of the feed roller is one. A twisting machine, wherein a twist number of 1 / f fluctuation is given to the yarn in accordance with the magnitude of a signal of a series having / f fluctuation. 3. A twisting machine for twisting one or many yarns, comprising: a feed roller for drawing in the yarn; and a spindle for receiving the yarn sent from the feed roller, wherein the rotation speed of the spindle is 1 / f. A yarn twisting machine characterized in that a twist number of 1 / f fluctuation is given to a yarn in accordance with the magnitude of a signal of a series having a fluctuation. 4. A twisting machine for twisting one or many yarns, comprising: a feed roller for drawing in the yarn; and a spindle for receiving the yarn sent from the feed roller. Characterized in that the number of twists of 1 / f fluctuation is given to the yarn in accordance with the magnitude of a signal of a series having 1 / f fluctuation.