KR20230037893A - Lassel knitting machine for knitting optical fiber-based fabric - Google Patents

Abstract

The present invention relates to an optical fiber-based fabric and to a raschel warp knitting machine for knitting the same. A raschel warp knitting machine (1) comprises a supply unit (7) that supplies yarn (Y) and an optical fiber (11), and a weaving unit (5) that weaves a lase by the yarn (Y) and the optical fiber (11) supplied from the supply unit (7), wherein the weaving unit (5) includes: a guide portion (7) that supplies the optical fiber (11) and the yarn (Y) to a knitting needle (12); the knitting needle (12) that forms a knitting stitch by catching the optical fiber (11) and the yarn (Y), which are supplied from the guide portion (7), by a plurality of knitting needles (12) when vertically reciprocating; a tongue (14) that serves to open and close a knitting needle head and vertically moves together with the knitting needle (12) such that the knitting stitch caught in the knitting needle head can escape, a sinker (16) that is located between the knitting needles (12) to hold the knitting stitch during knitting in order to assist in formation of the knitting stitch; and a cam mechanism that moves the knitting needle (12) back and forth and left and right so that the optical fiber (11) and the yarn (Y) are caught in the desired knitting needle (12), thereby forming a knitting structure. According to the present invention, it is possible to easily knit the optical fiber on the fabric with free curves.

Description

Optical fiber-based fabric and Lassel warp knitting machine for knitting the same {Lassel knitting machine for knitting optical fiber-based fabric}

The present invention relates to an optical fiber-based fabric and a Raschel warp knitting machine, and more particularly, to a technique for easily knitting optical fibers into a fabric with a free curve by using a multi-bar Raschel warp knitting machine when manufacturing an optical fiber-based fabric.

Optical fiber fabric is a functional material in which the color of light generated from the LED light source is expressed on the surface of the fabric. This is a type of smart photonic, and it can visualize the emotions of materials by controlling colors by applying digital technologies such as colors, luminous bodies, and display devices.

Recently, in the field of light-emitting clothing, a clothing type having a light-emitting function on the entire surface of the fabric by connecting an LED and a flexible optical fiber is emerging. Various applications, such as communication functions and safety protection functions, are being studied mainly for entertainment functions.

In addition, various fabrics are mainly used as fabrics for such light-emitting clothing, and are classified into a weaving method using a dobby loom or a jacquard loom and an embroidery method using a computer embroidery machine.

However, this conventional weaving method is applicable when an optical fiber is inserted into a fabric in a straight shape, but has a limitation when the optical fiber is inserted in a curved shape with a predetermined curvature.

Patent Application No. 10-2005-7003983 (Name: Elastic Warp Knitted Silk)

Therefore, the present invention has been made to solve this problem, and an object of the present invention is to provide a technology that can easily knit optical fibers to a fabric with a free curve by using a multi-bar Raschel warp knitting machine when manufacturing an optical fiber-based fabric. is to provide

In order to achieve the above object, one embodiment of the present invention relates to an optical fiber-based fabric and a Raschel warp knitting machine for knitting the same,

Such a Raschel warp knitting machine includes a supply unit 7 for supplying yarn Y and optical fibers 11, and a weaving unit 5 for weaving lace by using the yarn Y and optical fibers 11 supplied from the supply unit 7. As a Raschel warp knitting machine (1) comprising a,

The weaving unit 5 includes a guide bar 7 for supplying the optical fiber 11 and yarn Y to the knitting needle 12;

a knitting needle 12 that forms a loop by hooking the optical fiber 11 and the yarn Y supplied from the guide part 7 by a plurality of knitting needles 12 in the case of up and down reciprocating motion;

a tongue (14) that moves up and down like the knitting needle 12 while opening and closing the knitting needle head so that the knitting needle caught in the knitting needle head can escape;

a sinker (16) positioned between the knitting needles 12 and holding the knitting loop during knitting to assist in forming the knitting loop; and

It includes a cam mechanism that moves the knitting needle 12 back and forth and left and right so that the optical fiber 11 and the knitting yarn Y can be caught on the desired knitting needle 12 to form a knitting structure.

Another embodiment of the present invention is a method of knitting warp knitted fabric using the Raschel warp knitting machine (1) according to any one of claims 1 to 3,

In the Raschel warp knitting method, when knitting the first row course (C1), the guide bar 7 wraps around the knitting needle 12 and the cam swings around the knitting needle 12 so that the yarn is knitted. The first step (S10) of forming (R1); and

A second step (S20) of forming a loop (R2) by wrapping and swinging the guide bar (7) and the cam around the knitting needle (12) even when the second row course (C2) is knitted,

In the first and second steps S10 and S20, the optical fiber 11 is disposed parallel to the knitting needle 12 so that the optical fiber 11 is inserted into the loop R1 formed by yarn,

The bending (R1) of the first row course (C1) and the bending (R2) of the second row course (C2) are tilted left and right around the vertical line, so that the optical fiber 11 is also bent left and right around the vertical line (L). and form a curved shape.

As another embodiment of the present invention, a Raschel warp knitted fabric capable of knitting an optical fiber 11 knitted on a fabric in a curved shape by knitting by a Raschel warp knitting machine 1 is provided.

One embodiment of the present invention has the effect of easily knitting the optical fiber to the fabric with a free curve degree by using a multi-bar Raschel warp knitting machine when manufacturing an optical fiber-based fabric.

1 is a view showing the structure of a multi-bar Rassel machine capable of knitting warp knitted fabric according to an embodiment of the present invention.
2 is a perspective view showing the structure of the knitting unit shown in FIG. 1;
3 is a plan view showing a warp knitted fabric knitted by the Raschel group shown in FIG. 1;
4 (a) and (b) are photographs showing the actual warp knitted paper shown in FIG.
5 is a flowchart showing a method of knitting a warp knitted fabric according to another embodiment of the present invention.

Hereinafter, a Raschel warp knitting machine for knitting an optical fiber-based fabric according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 5, in the optical fiber-based warp knitted fabric F proposed by the present invention, the fabric Y and the optical fiber 11 are integrally knitted by the Raschel warp knitting machine 1.

This Raschel warp knitting machine 1 includes a frame 3; A supply unit 7 provided on the upper portion of the frame 3 to supply the yarn Y and the optical fiber 11; A weaving unit 5 is provided in the middle of the frame 3 and weaves a lace by using the yarn Y supplied from the supply unit 7 by the knitting needle 12 and the optical fiber 11.

In the warp knitting machine 1, a plurality of yarns Y and optical fibers 11 wound on a reel 9 provided in a plurality of supply units 7 are unwound and supplied to the weaving unit 5, and the weaving unit ( It is a structure in which the lace is knitted by the up and down reciprocating motion of the guide bar and knitting needle 12 in 5).

The weaving unit 5 includes a guide portion 7 for supplying the optical fiber 11 and yarn Y to the knitting needle 12; a knitting needle 12 that forms a loop by hooking the optical fiber 11 and the yarn Y supplied from the guide part 7 by a plurality of knitting needles 12 in the case of up and down reciprocating motion; a tongue (14) that moves up and down like the knitting needle 12 while opening and closing the knitting needle head so that the knitting needle 12 can escape; a sinker (16) positioned between the knitting needles 12 and holding the knitting loop during knitting to assist in forming the knitting loop; It includes a cam mechanism (not shown) for forming a knitting structure by moving the knitting needle 12 back and forth and left and right so that the optical fiber 11 and the knitting yarn can be caught on the desired knitting needle 12.

In the case of knitting by the Raschel warp knitting machine 1 having such a structure, the optical fiber 11 and the yarn Y are passed through the hole formed in the guide 38 first.

In addition, the guide bar 7 wraps around the knitting needle 12 by reciprocating in the X-axis direction by the drive unit, and swings around the knitting needle 12 by reciprocating in the Y-axis direction by the cam. do.

In this way, when the yarn (Y) and the optical fiber 11 are wound around the knitting needle 12 by the wrapping and swinging motion, the knitting needle 12 moves up and down, and the sinker 16 moves the knitting needle 12 up and down. Knitting is performed by holding the loop to form a loop.

Also, in this knitting process, only some knitting needles 12 are selected or not selected by the presser unit 11, so that the patterns can be diversified due to mis-knitting.

In this pattern, as shown in FIGS. 2 and 3, the wales W are formed by multiple twisted vertical rows, and the courses C1, C2, and C3 are formed by multiple twisted horizontal rows.

Also, the optical fibers 11 are knitted and positioned at regular intervals between the plurality of wales W.

On the other hand, when explaining the process of integrally knitting the optical fibers 11 between the plurality of wales W, when the first row course C1 is knitted, the guide bar 7 surrounds the knitting needle 12. is wrapped, and by swinging around the knitting needle 12 by a cam, the yarn forms a knitting loop (R1) (first step; S10).

At this time, the optical fiber 11 is disposed parallel to the knitting needle 12 so that the optical fiber 11 is inserted into the loop R1 formed by yarn.

Also, when the second row course C2 is knitted, the guide bar 7 and the cam wrap and swing around the knitting needle 12 to form the loop R2 (second step; S20). Also, the optical fiber 11 is inserted inside the loop R2 of the second row course.

At this time, the loop (R1) of the first row course (C1) and the loop (R2) of the second row course (C2) are slightly tilted from side to side with respect to the vertical line.

Therefore, the optical fiber 11 penetrating the inside of the loop (R1) of the first row course (C1) and the loop (R2) of the second row course (C2) is also slightly pulled left and right around the vertical line, resulting in an overall curved shape. make up

And, when the curvature of the optical fiber is further increased, in the bending of each course C1, C2, C3, the optical fiber 11 does not sequentially pass through the bending R1 and R2 on the same vertical line L, but , After the optical fiber passes through the winding R1 of the first row course C1, the winding R3 of the second row course C2 passes the winding R3 of the adjacent vertical line L1 to the optical fiber 11 After passing through, in the third row course (C3), the first vertical line (L) is knitted so that the optical fiber 11 passes through the loop (R4).

Of course, it is also possible to increase the curve of the optical fiber 11 passing through each loop by making the slope of the loops disposed on the same vertical line larger.

Meanwhile, in addition to the above methods, the curvature of the optical fiber 11 can be adjusted by appropriately selecting the setting condition.

For example, the spacing and curvature of the optical fibers 11 can be adjusted by controlling the position, spacing, and winding speed of the optical fiber supply reel 9 .

After the optical fiber 11 passes through the braiding loop knitted on the first course C1, the winding speed of the optical fiber 11 is slowed so that the optical fiber 11 is pulled and the braided loop knitted on the second course C2 This is a method in which the optical fiber 11 is bent with a certain curvature when passing through.

In this way, the optical fiber 11 can be formed into a curved shape.

On the other hand, the knitting elements are appropriately improved due to the low flexibility and elongation of the optical fiber 11.

That is, as the knitting gauge is changed from 24 gauge to 12 gauge, the guide knitting needle 12 is also changed. For example, 48 knitting needles 12 are changed to 24. Also, the tongue 14 and knitting needle 12 are changed.

Also, the hook size of the knitting needle 12 is changed according to the diameter of the optical fiber 11. For example, when the diameter of the optical fiber 11 is 0.25 mm, 0.5 mm, or 0.75 mm, the hook of the knitting needle 12 size is changed.

In addition, since the width of the Raschel warp knitting machine 1 is 134 inches and 12 gauge, a total of 1,608 knitting needles 12 are required.

In addition, the guide needle is also replaced according to the diameter of the optical fiber 11, and the hole size increases.

Claims (5)

Raschel warp knitting comprising a supply unit 7 for supplying yarns Y and optical fibers 11 and a weaving unit 5 for weaving lace by using the yarns Y and optical fibers 11 supplied from the supply unit 7 As group (1),
The weaving unit 5 includes a guide bar 7 for supplying the optical fiber 11 and yarn Y to the knitting needle 12;
a knitting needle 12 that forms a loop by hooking the optical fiber 11 and the yarn Y supplied from the guide part 7 by a plurality of knitting needles 12 in the case of up and down reciprocating motion;
a tongue (14) that moves up and down like the knitting needle 12 while opening and closing the knitting needle head so that the knitting needle caught in the knitting needle head can escape;
a sinker (16) positioned between the knitting needles 12 and holding the knitting loop during knitting to assist in forming the knitting loop; and
A Raschel warp knitting machine (1) including a cam mechanism that moves the knitting needle 12 back and forth and left and right so that the optical fiber 11 and the knitting yarn Y can be caught on the desired knitting needle 12 to form a knitting structure. According to claim 1,
By controlling the winding speed of the optical fiber supply reel 9 disposed in the supply unit 7, the optical fiber 11 knitted on the fabric is knitted in a curved shape, but the Raschel warp knitting machine 1 adjusts the spacing or curvature of the optical fiber 11 ). According to claim 1,
A Raschel warp knitting machine (1) that increases the hole diameter of the guide bar (10) according to the diameter of the optical fiber (11). A method of knitting a Raschel warp knitted fabric using the Raschel warp knitting machine (1) according to any one of claims 1 to 3,
In the warp knitting method, when knitting the first row course C1, the guide bar 7 wraps around the knitting needle 12 and swings around the knitting needle 12 with a cam so that the yarn is knitted ( A first step (S10) of forming R1); and
A second step (S20) of forming a loop (R2) by wrapping and swinging the guide bar (7) and the cam around the knitting needle (12) even when the second row course (C2) is knitted,
In the first and second steps S10 and S20, the optical fiber 11 is disposed parallel to the knitting needle 12 so that the optical fiber 11 is inserted into the loop R1 formed by yarn,
The bending (R1) of the first row course (C1) and the bending (R2) of the second row course (C2) are tilted left and right around the vertical line, so that the optical fiber 11 is also bent left and right around the vertical line (L). A method of knitting Raschel warp knitted fabric forming a curved shape. A Raschel warp knitted fabric capable of knitting an optical fiber (11) knitted on a fabric in a curved shape by knitting by the Raschel warp knitting machine (1) of claim 4.

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