JPH05217435A - Method for coloring surface of electric wire - Google Patents

Abstract

(57) [Summary] [Purpose] The surface of the wire is colored without causing color unevenness on the entire surface of the wire. [Operation] The electric wire running in the horizontal direction is guided into the ink in the ink coating tank, and the electric wire is dipped and run. After that,
Run the printer by pulling it vertically from inside the ink coating tank. Then, the excess ink adhering to the surface of the electric wire is squeezed out by the ink squeezing device, and the electric wire is run horizontally and wound up.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for coloring the surface of an insulated wire, and more particularly to a method for coloring the surface of an electric wire which does not cause color unevenness on the entire surface.

[0002]

2. Description of the Related Art Generally, insulated wires are properly used according to the purpose of use or the location of use. That is, when connecting one end of the insulated wire to a specific device and connecting the other end of the insulated wire connected to this device to another device or power supply device, cover the conductor so that the connection of the wire to be connected is not mistaken. The insulation is colored. In the case of an insulated wire, it is particularly important that the insulator is colored, because if the terminals or the connecting portion are erroneously connected, a short circuit between wires may occur. In this way, the insulated wire is colored by coloring the insulator covering the conductor so that it can be used properly.

For this color classification, various colors such as red, yellow and blue are used. Conventionally, the coloring of this insulator has been performed as shown in FIG.
The method shown in is adopted. That is, the electric wire 100 running in the horizontal direction is coated with the ink 220 sprayed from the spray nozzle 210 in the ink applicator 200. The electric wire 100 to which the ink 220 is applied by the ink applicator 200 squeezes out excess ink attached to the surface of the electric wire 100 by an ink squeezing device 300 provided immediately after the ink applicator 200.

[0004]

However, in the conventional method for coloring the surface of the electric wire, since the ink 220 is sprayed from the spray nozzle 210 to the surface coloring of the electric wire 100, the surface of the electric wire 100 during traveling is applied. It is necessary to flow an excessive amount of ink on the electric wire 100 more than the amount of ink necessary for applying the electric wire 100 completely in the circumferential direction, that is, in the entire electric wire 100 in the circumferential direction. Therefore, according to the conventional method of coloring the surface of the electric wire, after the application by spraying the ink 220, the influence of gravity is exerted until the excess ink 220 applied on the surface of the electric wire 100 is squeezed by the squeezing device 300. However, there is a problem in that color unevenness is likely to occur between the upper and lower portions of the electric wire 100 due to the receiving and accumulating in the lower part of the electric wire 100.

An object of the present invention is to provide a method for coloring the surface of an electric wire which does not cause color unevenness on the entire surface of the electric wire.

[0006]

In order to achieve the above object, the method for coloring the surface of an electric wire of the present invention is a method in which an electric wire running in a horizontal direction is dipped in an ink in an ink coating tank for running.
The ink is drawn from the inside of the ink coating tank in the vertical direction and run, and the excess ink adhering to the surface of the electric wire is squeezed out by the ink squeezing device.

In order to achieve the above object, the method of coloring the surface of an electric wire according to the present invention involves changing the running direction of an electric wire running in a horizontal direction to a vertical direction, and then spray-applying ink with a spray nozzle. The rear ink squeezing device squeezes out excess ink attached to the surface of the electric wire.

[0008]

Function: The electric wire running in the horizontal direction is guided into the ink in the ink coating tank, and the electric wire is dipped and run. After that, it is run so as to be pulled up vertically from inside the ink coating tank. Then, the excess ink adhering to the surface of the electric wire is squeezed out by the ink squeezing device, and the electric wire is run horizontally and wound up.

The electric wire traveling in the horizontal direction is changed in the traveling direction to the vertical direction. After that, the ink is spray-applied by a spray nozzle. Then, the excess ink adhering to the surface of the electric wire is squeezed by the ink squeezing device, and the electric wire is run in the horizontal direction and wound up.

[0010]

EXAMPLES Examples of the present invention will be described below. << First Invention >> FIG. 1 shows an embodiment of a surface coloring method for electric wires according to the first invention of the present application.

In the figure, reference numeral 1 denotes an ink coating tank, which is filled with ink 2 and which is used to dep the traveling insulated wire 3 to the ink 2. That is, the ink coating tank 1 is configured to pass the traveling insulated electric wire 3 through the ink 2 and apply the ink 2 to the surface of the insulated electric wire 3. Reference numeral 4 denotes a guide roller, which is attached to the inside of the upper end portion of the ink application tank 1 and guides the traveling insulated electric wire 3 in traveling.

Reference numeral 5 denotes a guide roller, which is attached near the bottom inside the ink applying tank 1 and is attached at a position where it is always buried in the ink 2. The guide roller 5 is attached below the guide roller 4, and guides the traveling insulated wire 3 so as to travel downward from the position of the guide roller 4.

Reference numeral 6 denotes a guide roller, which is provided above the ink coating tank 1 and above the guide roller 5. The guide roller 6 has a function of pulling the traveling insulated wire 3 vertically from the position of the guide roller 5.

A guide roller 7 is provided at a position slightly lower than the position of the guide roller 6. This guide roller 7 is an insulated wire 3 pulled up from the guide roller 5.
Is guided by the guide roller 6 in the horizontal direction and then slightly downwardly to be guided horizontally to the winding drum 8.

Reference numeral 9 denotes an ink squeezing device, which is provided between the guide rollers 5 and 6 at a position above the ink coating tank 1. The ink squeezing device 9 squeezes out the excess ink 2 adhering to the surface of the insulated wire 3 when passing through the ink 2 in the ink applying tank 1. Specifically, the ink squeezing device 9 removes the excess ink 2 on the surface by sandwiching the insulated wire 3. The material is not particularly limited, but stainless wool, chamois cord, urethane foam sponge, etc. are suitable. There is.

When the surface of the insulated electric wire 3 is colored, the ink 2 stored in the ink coating tank 1 is optimally selected in relation to the type of coating material (insulating material) of the insulated electric wire 3. Good to do. For example, when polyethylene (including cross-linking) is used for the covering material (insulating material) of the insulated wire 3, the ink 2 uses a mixture of a cyclized rubber resin and a pigment such as polyazo red. To do. When a vinyl chloride resin composition is used as a coating material (insulating material) for the insulated wire 3, a resin component of vinyl chloride-vinyl acetate copolymer mixed with a pigment such as cyanine green is used.

When it is necessary to dry the ink after squeezing the ink with the ink squeezing device 9, a drying device can be installed at an appropriate position between the ink squeezing device 9 and the winding drum 8. Is.

<< Second Invention >> FIG. 2 shows an embodiment of a surface coloring method for electric wires according to the second invention of the present application.

In the figure, 10 is a guide roller for changing the traveling direction of the insulated electric wire 11 traveling in the horizontal direction to the vertically upward direction. An ink applicator 12 is provided with two spray nozzles 13 and 14, and sprays the ink 15 from both sides onto the insulated electric wire 11 running in the ink applicator 12. That is, the ink applicator 12 is
The ink 15 is sprayed onto the insulated wire 11.

Reference numeral 16 denotes an ink squeezing device, which is an ink applicator 12
Is provided on the rear side, that is, above the ink applicator 12. The ink squeezing device 16 squeezes out the excess ink 15 adhering to the surface of the insulated wire 11 when passing through the sprayed ink 15 in the ink applying device 12. Specifically, the ink squeezer 16 is the insulated wire 1
It removes excess ink 15 on the surface by sandwiching 1, and the material is not particularly limited, but stainless wool,
Chamois strings and urethane foam sponges are suitable.

When the surface of the insulated wire 11 is colored,
The ink 15 sprayed in the ink applicator 12 is
It is preferable to use the most suitable one in relation to the type of coating material (insulating material) of the insulated wire 11. For example, when polyethylene (including cross-linking) is used as the covering material (insulating material) of the insulated wire 11, the ink 15 is a cyclized rubber-based resin component,
A mixture of pigments such as polyazo red is used. When a vinyl chloride resin composition is used as the coating material (insulating material) of the insulated wire 11, a resin component of vinyl chloride-vinyl acetate copolymer mixed with a pigment such as cyanine green is used.

Reference numeral 17 denotes a guide roller, which is an ink squeezer 16
Is provided above. This guide roller 17
Has an action of pulling the traveling insulated wire 11 vertically from the position of the guide roller 10.

Reference numeral 18 is a guide roller, which is a guide roller 17.
It is provided slightly below the position of. The guide roller 18 is sprayed with the ink 15 by the ink applicator 12, and the insulated wire 11 in which the excess ink is squeezed by the ink squeezing device 16 is guided horizontally by the guide roller 17 and then slightly downwardly. , For horizontally guiding the winding drum 19.

When it is necessary to dry the ink after squeezing the ink with the ink squeezing device 16, a drying device can be installed at an appropriate position between the ink squeezing device 16 and the winding drum 19. Is.

[0025]

According to the first aspect of the present invention, an electric wire that runs in the horizontal direction is immersed in the ink in the ink application tank and then moved in the vertical direction from the inside of the ink application tank. Since the excess ink adhering to the surface is squeezed out, the excess ink on the surface of the wire drops even in the direction perpendicular to the circumferential direction even if it is affected by gravity. It is possible to prevent color unevenness from occurring in the circumferential direction.

According to the second invention of the present application, after changing the traveling direction of the electric wire traveling in the horizontal direction to the vertical direction, the ink is sprayed and applied by the spray nozzle, and thereafter, the excess attached on the surface of the electric wire by the ink squeezing device. Since the ink is squeezed out, excess ink on the surface of the wire will drop evenly in the direction perpendicular to the circumferential direction even under the influence of gravity. Can be prevented.

[Brief description of drawings]

FIG. 1 is an overall schematic diagram showing an embodiment of a method for coloring the surface of an electric wire according to the first invention of the present application.

FIG. 2 is an overall schematic view showing an embodiment of a method for coloring the surface of an electric wire according to the second invention of the present application.

FIG. 3 is an overall schematic diagram showing a conventional method for coloring the surface of an electric wire.

[Explanation of symbols]

1 ………………………………………………………… Ink coating tank 2,15 ……………………………………………… Ink 3 , 11, …………………………………………………… Insulated wire 9, 16 ……………………………………………… Ink diaphragm 12… …………………………………………………… Ink applicator 13,14 ………………………………………… Spray nozzle

Claims (2)

[Claims] 1. An electric wire running in a horizontal direction is dipped in ink in an ink applying tank, and is then pulled out in a vertical direction from the inside of the ink applying tank. A method of coloring the surface of an electric wire that was squeezed out. 2. An electric wire traveling in a horizontal direction is changed in a traveling direction to a vertical direction, and then ink is sprayed and applied by a spray nozzle, and then an excess ink adhering to the surface of the electric wire is squeezed by an ink squeezing device. Method for surface coloring of finished electric wire.