JP3433273B2 - Beam control device and control method for warp knitting 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 beam of a warp knitting machine for producing a knitted fabric having 1 / f fluctuation.

[0002]

2. Description of the Related Art Conventionally, an elastic thread such as spandex,
A knitted fabric having a large stretchability is knitted by a warp knitting machine using a single fiber such as cotton yarn and acrylic yarn, or a long-fiber non-elastic yarn such as nylon yarn and polyester yarn. At this time, a plurality of elastic yarns are wound around the beam with the same extension. Then, this beam is rotated according to the knitting speed of the knitted fabric, and a plurality of elastic yarns are sent in the same stretched state to knit the knitted fabric by the warp knitting machine.

[0003]

Problems to be Solved by the Invention The present invention solves the following problems. <A> The conventional knitted fabric is uniform, mechanical and lacks in natural feeling, and has little warmth when used as clothing.

[0004]

[Purpose of the present invention]

<A> The present invention is to provide a beam control device or method of a warp knitting machine for obtaining a knitted fabric having a natural unevenness feeling and giving a comfortable feeling. <B> In the present invention, the shrinkage force of the stitch of the knitted fabric is 1 / f in the warp direction.
A beam control device or method of a warp knitting machine for obtaining a knitted fabric having a fluctuation correlation. <C> The present invention is to provide a beam control device or method of a warp knitting machine for making 1 / f fluctuation correspond to a song or a sound and obtaining a knitted fabric expressing the song or the sound. <D> The present invention is to industrially produce a knitted fabric having a natural uneven feeling.

In the present invention, the "1 / f fluctuation" means that the power spectrum having the frequency component f is proportional to 1 / f ^k , and k has a value in the vicinity of 1.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a beam control device for a warp knitting machine for knitting an elastic yarn together with an inelastic yarn, and a rotary drive unit for rotating the beam around which a plurality of elastic yarns are wound, A yarn speed measuring unit for measuring the yarn speed of the beam,
A control unit that controls the rotational speed of the beam based on a signal from the yarn speed measuring unit to give a fluctuation of 1 / f fluctuation to the amount of elastic yarn supplied is provided. The beam control device of the warp knitting machine, or the warp for knitting an elastic yarn with an inelastic yarn, characterized in that the contraction force of the stitches of the knitted fabric has 1 / f fluctuation in the warp direction when supplied to the knitting machine. In a method of controlling a beam of a knitting machine, the beam around which a plurality of elastic yarns are wound is rotationally controlled, each elastic yarn is supplied to a warp knitting machine at a supply amount of 1 / f fluctuation, and a shrinkage force of a stitch of a knitted fabric is obtained. Is 1 / f in the longitudinal direction
A beam control method for a warp knitting machine is characterized by having fluctuations.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. <B> Outline of Warp Knitting Machine (FIG. 1) A warp knitting machine is generally used and has a beam system 1, a knitting section 2 and a winding section 3, as shown in FIG. The beam system 1 includes, for example, a plurality of inelastic yarn beams 11 wound with 660 inelastic yarns 5 arranged coaxially, and a plurality of elastic yarns in which 641 elastic yarns are wound at a predetermined extension ratio. The thread beam 12 is coaxially arranged. The beam system 1 combines, for example, eight inelastic thread beams 11 and eight elastic thread beams 12, respectively, and supplies a total of 10408 inelastic threads and elastic threads to the knitting section 2. The warp knitted fabric 4 is knitted by the knitting unit 2, and is wound by the winding unit 3 at a predetermined speed. As the non-elastic yarn, single fibers such as cotton yarn and acrylic yarn, or long fibers such as nylon yarn and polyester yarn are used. Spandex or the like is used as the elastic yarn.

<B> Beam control device (FIG. 2) For example, four elastic yarn beams 12 are arranged coaxially, and all of them are rotationally controlled at the same rotational speed. Elastic yarn beam 12
Is controlled by a drive device such as an inverter motor 14 capable of controlling rotation at a necessary rotation speed. Inverter motor 1
A gear box 13 is arranged as necessary in order to adjust the rotation ratio between the rotation speed of the elastic yarn beam 4 and the rotation speed of the elastic yarn beam 12. The inverter motor 14 is controlled by the beam controller 17 and is controlled at a required rotation speed. In order to measure the yarn feeding speed, the yarn speed on the beam surface is detected by the yarn speed detector 15.
Then, it is taken out as an electric signal by the yarn speed measuring device 16 and inputted to the beam control unit 17. If the yarn supply speed is to be constant, the beam control unit 17 adjusts the rotation speed of the inverter motor 14 based on the signal from the yarn speed measuring device 16 to adjust the yarn speed on the surface of the beam to a predetermined value. Control to the speed of.

<C> 1 / f fluctuation The present inventor, Toshimitsu Samurai, found for the first time in the world that 1 / f fluctuation gives humans a special feeling of comfort. The page says "Biometric information and 1
/ F fluctuation "was published, and the journal of Japan Society for Precision Machinery 19
Also published a paper on "Biological control and 1 / f fluctuation" in Volume 50, No. 6 of 1984, and more recently, "The idea of fluctuation" from NHK Publishing.
Is published. The outline of these is "1 / f fluctuation is a fluctuation that gives a comfortable feeling to humans, and the reason why 1 / f fluctuation gives a feeling of comfort is that the fluctuation of the basic rhythm of the human body is a spectrum like 1 / f. Is derived from having.
Another way of looking at this is that humans get tired of receiving the same stimulus continuously, and conversely, stimuli that change too much are rather uncomfortable. Is the 1 / f fluctuation. ". Also, in Kodansha Bluebucks "World of Fluctuations", "For example, the rhythmic phenomena that living organisms basically show 1 / f fluctuations such as heartbeat, clapping, and α rhythm seen in the firing cycle of nerve cells and EEG. And
It is empirically known that a living body gets a pleasant sensation when it receives a fluctuation similar to the 1 / f fluctuation of the biological rhythm as a stimulus. " There are various fluctuations (variations) in the natural world, but for example, those that give a comfortable feeling to humans, such as the babbling of the stream and the natural cold, are 1 / f.
Fluctuations and strong winds that cause anxiety such as typhoons
It is out of 1 / f fluctuation.

<D> 1 / f fluctuation numerical sequence (FIG. 3) The 1 / f fluctuation numerical sequence is a random number sequence x ₁ , x ₂ , x ₃ ,.
··· is obtained from y ₁ , y ₂ , y ₃ , ... Created by calculating _n coefficients a ₁ , a ₂ , a ₃ ,. However, y _j is represented by the following equation (1) of the equation 1. here,
The numerical sequence of y ₁ , y ₂ , y ₃ , ... Has a 1 / f spectrum (for details, see Corona Publishing, Biosignal, Chapter 10, “Biorhythm and Fluctuation”).

[Equation 1]

For the numerical sequence of 1 / f fluctuations, for example, a computer is used to generate a random number sequence x in the first step, and in the second step, n coefficients a stored in a storage device are sequentially stored. The calculation is performed and linear transformation is performed to obtain a numerical value sequence y.
This numerical sequence y has a 1 / f spectrum, so 1 / f
It can be used for fluctuation numerical sequences. An example of the 1 / f fluctuation numerical sequence thus obtained is shown in the following Expression 2 of Expression 2.

[Equation 2]

Alternatively, a 1 / f fluctuation tune can be created from a 1 / f series of numerical values. First, the scale and range (lower limit frequency fL and upper limit frequency fU of the range) are determined.
Next, the 1 / f series y is obtained and linearly converted so that the upper limit and the lower limit become the lower limit frequency fL and the upper limit frequency fU of the musical range. The value of the y-series obtained in this way is regarded as the acoustic frequency and is replaced with the frequency of the nearest scale. That is, a quarter note, for example, is assigned in order to the closest line or space on the 5-line paper. FIG. 3 shows a part of the music pieces obtained by this method.

<E> Example of beam control In order to impart 1 / f fluctuation to the shrinkage force of the stitches of the knitted fabric,
The beam control unit 17 controls the rotation of the inverter motor 14 to take out the elastic yarn from the elastic yarn beam 12 and give 1 / f fluctuation to the supply amount to be supplied to the knitting unit 2. The inelastic yarn beam 11 supplies a constant amount to the knitting section 2. In order to impart 1 / f fluctuation to the supply amount of the elastic yarn beam 12, the speed of the yarn on the surface of the elastic yarn beam 12 is measured, and the beam control unit 17 controls so that 1 / f fluctuation is imparted to the velocity. Control. For example, the supply speed of the specified elastic yarn (original yarn length)
(For example, 0.5 m / min), a numerical sequence of 1 / f fluctuation, for example, the numerical sequence of Expression 2 (17, 12, 15, 15, 12,
...) is added every predetermined time. That is, first, the yarn feeding speed (0.5 + 0.17) m / min, the yarn feeding speed (0.5 + 0.12) m / min, and the yarn feeding speed (0.5 + 0.15). A fluctuation of 1 / f fluctuation is given to the supply amount of the elastic yarn so as to be m / min. When the fluctuation of 1 / f fluctuation is imparted to the supply amount of the elastic yarn in this way, 1 / f fluctuation is generated in the shrinkage force of the stitch in the warp direction of the knitted fabric. It should be noted that, instead of the numerical value sequence of Expression 2, a numerical value sequence created from music or timbre having 1 / f fluctuation can be used.

[0014]

When the knitted fabric is knitted by giving 1 / f fluctuation to the beam rotation of the present invention, the following effects can be obtained. <B> The contraction force of the stitches of the knitted fabric does not change constantly or randomly but changes with a correlation, and since the correlation has 1 / f fluctuation, it has a natural unevenness feeling and a special It can give you a feeling of comfort and aesthetics. <B> A knitted fabric having a natural unevenness can be industrially manufactured at low cost. <C> A knitted fabric having a correlation of 1 / f fluctuation with the shrinkage force of the stitches of the knitted fabric in the warp direction can be obtained. <D> A tone or music having 1 / f fluctuation can be woven into the knitted fabric to give a comfortable feeling.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a warp knitting machine.

FIG. 2 is a diagram showing a beam control device.

FIG. 3 is a diagram showing a song having 1 / f fluctuation.

[Explanation of symbols] 1 ... Beam system 11 ... Inelastic thread beam ..Elastic yarn beam 15 ... Thread speed detector 17 ... Beam control unit

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Tamura Kenji Tamura 635 Nakajima, Kawauchi-cho, Tokushima City, Tokushima Nisshinbo Co., Ltd. Tokushima Factory (72) Inventor Yoshinori Sasaki Nihonbashi Ningyocho, Chuo-ku, Tokyo 2-31-11 Nisshinbo Incorporated (56) References Actually open 53-56058 (JP, U) Actually open 48-40546 (JP, U) Patent 2687206 (JP, B2) Patent 2651894 (JP, B2) Patent 2860445 (JP, B2) ) (58) Fields investigated (Int.Cl. ⁷ , DB name) D04B 1/00-39/08

Claims (2)

(57) [Claims] 1. A beam control device of a warp knitting machine for knitting an elastic yarn together with an inelastic yarn, and a rotary drive unit for rotating a beam around which a plurality of elastic yarns are wound, and a yarn speed for measuring the yarn speed of the beam. A measuring unit and a control unit for controlling the rotational speed of the beam based on a signal from the yarn speed measuring unit to give a fluctuation of 1 / f fluctuation to the supply amount of the elastic yarn are provided. A beam control device for a warp knitting machine, wherein the elastic yarn is supplied to the warp knitting machine, and the shrinkage force of the stitches of the knitted fabric has 1 / f fluctuation in the warp direction. 2. A method of controlling a beam of a warp knitting machine for knitting an elastic yarn together with an inelastic yarn, wherein a beam around which a plurality of elastic yarns are wound is rotationally controlled, and the warp knitting machine is supplied at a rate of 1 / f fluctuation. A beam control method for a warp knitting machine, wherein each elastic yarn is supplied, and the shrinkage force of the stitches of the knitted fabric has 1 / f fluctuation in the warp direction.