JP2003303524A - Method for manufacturing electric wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing an electric wire quickly drying a coloring agent used for coloring at least part of the outer surface. <P>SOLUTION: The manufacturing of the electric wire is conducted with a coloring device 1 of the electric wire. The coloring device 1 of the electric wire is equipped with a running means (not illustrated); a housing bath 10; a feeding roller 12; a coloring roller 12; and a stage 13. The coloring device 1 of the electric wire colors a part of the outer surface 5a of the electric wire 3 with dye R1, and then wipes out a part of the dye R1. The coloring device 1 of the electric wire colors a part of the outer surface 5a of a coated part 5 of the electric wire 3 with the dye R1 to form marking on the outer surface 5a of the electric wire 3. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an electric wire whose outer surface is at least partially colored.

[0002]

2. Description of the Related Art Various electronic devices are mounted on automobiles and the like as moving bodies. Therefore, the car etc.
A wire harness is arranged to transmit electric power from a power source or the like and control signals from a computer or the like to the electronic device. The wire harness includes a plurality of electric wires and connectors attached to the ends of the electric wires.

The electric wire is a so-called covered electric wire, which is provided with a conductive core wire and an insulating covering portion for covering the core wire.
The connector includes a conductive terminal fitting and an insulating connector housing. The terminal fitting is attached to the end portion of the electric wire and electrically connected to the core wire of the electric wire. The connector housing is formed in a box shape and accommodates the terminal fitting.

When assembling the wire harness,
First, the electric wire is cut into a predetermined length, and then a terminal fitting is attached to an end portion of the electric wire. Connect wires to each other as necessary. Then, the terminal fitting is inserted into the connector housing. In this way, the above-mentioned wire harness is assembled.

In the wire harness assembled as described above, the connector is connected to the connector of the electronic device to supply various signals and electric power to the electronic device. On the other hand, it is desired to mount a wider variety of electronic devices on the above-mentioned automobile in response to requests from users. Therefore, the number of electric wires forming the above-mentioned wire harness also tends to increase.

Therefore, when assembling the above-mentioned wire harness, it is desired that the above-mentioned plurality of electric wires can be distinguished from each other in order to attach a desired terminal fitting to a desired electric wire. Further, it is necessary to identify the size of the core wire, the material of the covering portion (change of the material depending on the presence or absence of heat resistance), the purpose of use, and the like of the electric wire of the wire harness described above. The purpose of use is, for example, an airbag,
This is a system of a vehicle that uses control signals such as ABS (Antilock Brake System) and vehicle speed information, and electric wires such as a power transmission system.

Therefore, in the step of cutting the electric wire to a desired length and the step of attaching the terminal fitting of the electric wire, a part of the outer surface of the electric wire has been conventionally colored with a paint as a coloring material. In these steps, while moving the electric wire along the longitudinal direction of the electric wire, the above-mentioned part is colored with the paint. Further, it is desired that the wire harness described above has a lower cost. For this reason, it is desired to further shorten the time required for the step of cutting the electric wire into a desired length and the step of attaching the terminal fitting of the electric wire. Therefore, in the above-mentioned process, it is desired to increase the moving speed of moving the electric wire.

[0008]

In the above-mentioned process, when the electric wire is moved at a higher speed when a part of the outer surface of the electric wire is colored with the paint, the electric wire is subjected to the post-process before the paint dries. It was sometimes supplied. At this time, the paint and the like may stain the equipment for manufacturing the wire harness. Further, if the coating material is supplied to the subsequent process before it is dried, the coating material in which a part of the outer surface of the electric wire is colored is peeled off, which makes it difficult to distinguish between the electric wires.

Further, in order to prevent the paint from being supplied to the subsequent process before it dries, it is conceivable to provide a drying device. In addition, it is possible to widen the interval between the unit for coloring the electric wire and the unit for the subsequent process so that the coating material dries while the electric wire moves between the unit for coloring the electric wire and the unit for the subsequent process. Conceivable. In these cases, there is a tendency to increase the space required for the production of the wire harness such as the need for a drying device or the widening of the interval between the units described above. For this reason, the cost of producing the wire harness may increase, which is not desirable.

Therefore, it is an object of the present invention to provide a method for producing an electric wire which can rapidly dry a coloring material having at least a part of its outer surface colored.

[0011]

In order to solve the problems and achieve the object, the method for producing an electric wire of the present invention according to claim 1 produces an electric wire having at least a part of its outer surface colored. In the method for producing an electric wire, at least a part of the outer surface is colored with a dye.

According to a second aspect of the present invention, there is provided an electric wire production method for producing an electric wire in which at least a part of the outer surface is colored, wherein at least a part of the outer surface is colored with a dye. After that, a part of the dye is wiped off.

A method of manufacturing an electric wire according to a third aspect of the present invention is characterized in that, in the method of manufacturing an electric wire according to claim 1 or 2, a part of an outer surface of the electric wire is colored with a dye. There is.

A method for manufacturing an electric wire according to a fourth aspect of the present invention is the method for manufacturing an electric wire according to claim 1 or 2, wherein the outer surface of the electric wire is colored with a dye over the entire circumference. It has a feature.

According to the present invention described in claim 1, at least a part of the outer surface of the electric wire is colored with a dye. Since the electric wire is colored with the dye, the dye applied to the outer surface can be thinner than the paint. Therefore, the time required for the dye to dry can be shortened.

In the present invention, the electric wire of which at least a part of the outer surface is colored may be a colored electric wire in which a coloring agent is mixed in the synthetic resin forming the covering portion, and the covering portion is not colored. It may be an electric wire.

The non-colored electric wire referred to in the present specification is
It is an electric wire in which various coloring agents are not mixed in the synthetic resin that constitutes the covering portion of the electric wire, and the outer surface of the electric wire has the color of the synthetic resin itself.

The term "dye" as used in the present specification means a color liquid which is dissolved or dispersed in a solvent. When the outer surface of the coating is colored with the dye, the dye penetrates into the coating. That is, as used herein, coloring the outer surface of the coating portion means dyeing the outer surface of the coating portion.

Further, it is desirable that the solvent has an affinity with the synthetic resin forming the coating portion. In this case, the dye will surely penetrate into the coating portion. Further, the above-mentioned coloring liquid constitutes the coloring material described in this specification.

According to the second aspect of the present invention, since the dye is partly wiped off after being colored with the dye, the time required for the dye to dry can be further shortened.

According to the third aspect of the present invention, since a part of the outer surface of the coating portion is colored, it is possible to reliably identify the plurality of electric wires.

According to the present invention as set forth in claim 4, since the entire circumference of the outer surface of the covering portion is colored, it is possible to surely color a colored wire or a non-colored wire in a desired color.

[0023]

DETAILED DESCRIPTION OF THE INVENTION A method of manufacturing an electric wire according to a first embodiment of the present invention will be described below with reference to FIGS. The electric wire manufacturing method according to the first embodiment of the present invention is a method of manufacturing the electric wire 3 shown in FIG. 2 by the electric wire coloring device 1 shown in FIG. As shown in FIG. 2, the electric wire 3 includes a conductive core wire 4 and an insulating coating portion 5. The core wire 4 is formed by twisting a plurality of conducting wires.
The conductive wire forming the core wire 4 is made of a conductive metal. Further, the core wire 4 may be composed of a single conductive wire.

The covering portion 5 covers the core wire 4. The covering portion 5 is made of, for example, polyvinyl chloride.
e: made of synthetic resin such as PVC). The synthetic resin forming the covering portion 5 is mixed with various colorants to obtain a desired color P.
Is colored. Moreover, the synthetic resin may be uncolored without mixing various coloring agents into the synthetic resin forming the covering portion 5. The outer surface 5 a of the covering portion 5 forms the outer surface of the electric wire 3. The term "non-colored" as used herein means a state in which various coloring agents are not mixed in the synthetic resin forming the covering portion 5 of the electric wire 3, and is the color of the synthetic resin itself.

As shown in FIG. 2, a part of the outer surface 5a of the covering portion 5 is colored with a color R different from the above-mentioned color P (indicated by parallel diagonal lines in FIG. 2). In the present embodiment, dotted line-shaped markings extending along the longitudinal direction of the covering portion 5, that is, the electric wire 3 are provided. The marking is formed by coloring a part of the outer surface 5a in a dotted line with a color R (shown by parallel diagonal lines in FIG. 2).

The outer surface 5 of the covering portion 5 described in the present specification
Coloring a means that the outer surface 5a of the coating 5 is colored with a dye. The dye refers to a dye that constitutes a colored liquid and is dissolved or dispersed in a solvent. Therefore, when the outer surface 5a of the covering 5 is colored with the dye, the dye permeates into the covering 5. That is, coloring the outer surface 5a of the covering portion 5 with a dye means that the outer surface 5a of the covering portion 5 is colored.
Is dyed with a dye.

Further, it is desirable that the solvent has an affinity with the synthetic resin forming the coating portion 5. In this case, the dye surely penetrates into the coating portion 5. Further, the above-mentioned coloring liquid constitutes the coloring material described in this specification.

A plurality of the electric wires 3 having the above-mentioned structure are bundled together, and a connector or the like is attached to an end portion thereof to form the above-mentioned wire harness. The connector is connected to the connector of various electronic devices such as automobiles, and the wire harness, that is, the electric wire 3 transmits various signals and electric power to each electronic device.

As shown in FIG. 1, the wire coloring device 1 is
It is provided with a traveling means (not shown), a container 10, a delivery roller 11, a coloring roller 12, and a squeegee 13. The traveling means moves (travels) the electric wire 3 along the longitudinal direction of the electric wire 3.

The storage tank 10 is formed in a box shape having an open top. The storage tank 10 stores the coloring liquid G of the color R. The first colored liquid G is one in which the dye R1 of the color R is dissolved or dispersed in the solvent R2. The storage tank 10 is arranged below the electric wire 3 that is traveled (moved) by the travel means.

The delivery roller 11 is formed in a cylindrical shape or a cylindrical shape and is rotatable about its central axis. The central axis is along the horizontal direction. A part of the delivery roller 11 is immersed in the coloring liquid G in the storage tank 10. When the feeding roller 11 rotates about the central axis, the coloring liquid G is attached to the outer peripheral surface 11a of the feeding roller 11. Then, while the colored liquid G is attached to the outer peripheral surface 11a, it rotates about the central axis.

The coloring roller 12 is formed in a cylindrical shape or a cylindrical shape and is rotatable about its central axis. The central axis is along the horizontal direction. Coloring roller 12
Are arranged above the feed roller 11 and below the electric wire 3. In the illustrated example, the coloring roller 12 is arranged above the delivery roller 11 along the vertical direction. The outer peripheral surface 12a of the coloring roller 12 is in contact with the outer peripheral surface 11a of the delivery roller 11 and a part of the outer surface 5a of the covering portion 5 of the electric wire 3.

Further, the coloring roller 12 is provided with a plurality of concave portions 14 which are concave from the outer peripheral surface 12a. The recesses 14 are arranged at equal intervals along the circumferential direction around the central axis of the coloring roller 12.

At least one of the feed roller 11 and the coloring roller 12 described above is rotated about the central axis by a drive source (not shown). In addition, the outer peripheral surface 11
Since a and 12a are in contact with each other, the feed roller 11 and the coloring roller 12 rotate in opposite directions about the central axis.

The squeegee 13 is arranged downstream of the coloring roller 12 in the moving direction of the electric wire 3. The squeegee 13 has an electric wire passage hole 15 through which the electric wire 3 inside can be passed. The squeegee 13 removes the excess dye R1 of the dye R1 of the coloring liquid G attached to the electric wire 3 by passing the electric wire 3 through the electric wire passage hole 15. That is,
The squeegee 13 is a dye R attached to the outer surface 5a of the electric wire 3.
Wipe off part of 1.

When the electric wire 3 is colored by the electric wire coloring device 1 described above, the electric wire 3 is inserted into the electric wire through hole 15 of the squeegee 13.
The electric wire 3 is moved along the arrow K, and the feed roller 11 is moved through the arrow J in FIG.
Rotate along. The arrow K indicates the moving (traveling) direction of the electric wire 3.

Then, the outer peripheral surface 12a is the delivery roller 1
Since the outer peripheral surface 11a of No. 1 and the outer surface 5a of the electric wire 3 are in contact with each other, the coloring roller 12 rotates along the arrow L in FIG. Then, the coloring liquid G attached to the outer peripheral surface 11a moves toward the coloring roller 12 (that is, moves upward) as the delivery roller 11 rotates. Then, the coloring liquid G adhering to the outer peripheral surface 11a enters the recess 14 of the coloring roller 12. The coloring liquid G that has entered the recess 14 moves toward the electric wire 3 (that is, moves upward) as the coloring roller 12 rotates.

The colored liquid G in the recess 14 is transferred to the outer surface 5 of the electric wire 3.
Attach to a. At this time, the shape of the marking (thickness, interval between dots) is determined by the shape of the recess 14. The dye R1 in the coloring liquid G permeates into the coating portion 5.
By the movement of the electric wire 3, the electric wire 3 having the coloring liquid G adhered to the outer surface 5a is passed through the electric wire passage hole 15 of the squeegee 13. Excessive coloring liquid G is removed from the coloring liquid G attached to the outer surface 5a. That is, a part of the dye R1 coloring the outer surface 5a of the electric wire 3 is wiped off. As described above, the wire coloring device 1 colors part of the outer surface 5a of the wire 3 with the dye R1, and then wipes off part of the dye R1. Thus, the above-described electric wire coloring device 1 colors (dyes) a part of the outer surface 5a of the electric wire 3 with the coloring liquid G of the color R, that is, the dye R1, and
Marking is applied to the outer surface 5a of the.

According to this embodiment, the outer surface 5a of the electric wire 3 is
Is dyed with dye R1. Since the electric wire 3 is colored with the dye R1, the dye R1 applied to the outer surface 5a can be thinner than the paint. Therefore, the time taken for the dye R1 to dry can be shortened. Therefore, the dye R1 in which a part of the outer surface 5a is colored can be dried quickly.

Therefore, it is possible to narrow the interval between the wire coloring device 1 and a unit in a post-process arranged downstream of the arrow K of the wire coloring device 1 of the above-described embodiment. Therefore, it is possible to reduce the installation space required for the electric wire manufacturing facility and the wire harness manufacturing facility. Further, since the dye R1 in which a part of the outer surface 5a is colored can be quickly dried, it is not necessary to provide a drying unit or the like for drying the electric wire 3.
Therefore, it is possible to suppress a rise in the manufacturing cost of the electric wire and the manufacturing cost of the wire harness.

Further, since the dye R1 is colored and then a part of the dye R1 is wiped off, the time taken for the dye R1 to dry can be further shortened. Therefore, the dye R1 in which a part of the outer surface 5a is colored can be dried more quickly. Furthermore, since a part of the outer surface 5a of the covering portion 5 is colored, the plurality of electric wires 3 can be reliably identified.

Next, the inventors of the present invention actually colored the outer surface of the electric wire with the coloring liquid G and a paint and compared them. FIG. 4 is a cross-sectional view of the electric wire 3a of the comparative example. The outer surface 5a of the electric wire 3a of the comparative example is colored with a paint. The same parts as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. In addition, the paint means the pigment B1 in the dispersion liquid.
4 (shown in FIG. 4) is dispersed. Therefore, when the outer surface 5a of the covering portion 5 is colored with the paint, the pigment B1 adheres to the outer surface 5a without penetrating into the covering portion 5. The paint is the coloring material described in this specification.

In the electric wire 3a shown in FIG. 4, the pigment B1 is attached to the outer surface 5a of the covering portion 5. Therefore, the maximum outer diameter of the electric wire 3a is the sum of the outer diameter M before coloring and the thickness N of the pigment B1. Further, in the comparative example shown in FIG.
The thickness N of the pigment B1 was 0.1 mm.

On the other hand, in the electric wire 3 of the present invention shown in FIG. 3, the dye R1 is soaked in the covering portion 5. Therefore, the maximum outer diameter of the electric wire 3 is substantially equal to the outer diameter M of the electric wire 3 before coloring. Further, in the comparative example shown in FIG. 3, the thickness T of the dye R1 soaked in the coating portion 5 is 0.01.
It was mm.

Thus, the thickness T of the dye R1 when the outer surface 5a of the electric wire 3 is colored with the coloring liquid is far greater than the thickness N of the pigment B1 when the outer surface 5a of the electric wire 3 is colored with the paint. It became clear that it was thin. Therefore, it became clear that the time taken for the dye R1 to dry was much shorter than the time taken for the pigment B1 to dry.

Further, in the wire coloring device 1 shown in the above-described first embodiment, a part of the outer surface 20a of the flat cable 20 as an electric wire shown in FIG. (Shown) may be colored. The flat cable 20 includes a plurality of core wires 21 that are parallel to each other and a covering portion 22 that covers the core wires 21. The flat cable 20 is formed in a flat band shape.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted.
The wire coloring device 30 shown in FIG. 6 according to the present embodiment,
As shown in FIG. 7, the outer surface 5a of the electric wire 3 is colored with a dye of a color R (shown by parallel diagonal lines in the figure) over the entire circumference.

As shown in FIG. 6, the wire coloring device 30 includes a traveling means (not shown) and a plurality of sprayers.
31 and the above-mentioned squeegee 13. The traveling means moves the electric wire 3 along the longitudinal direction of the electric wire 3.

A pair of sprayers 31 is provided in the illustrated example. The sprayer 31 sprays the above-mentioned colored liquid G toward the outer surface 5a of the electric wire 3 which is moved (traveled) along the arrow K by the traveling means. The pair of sprayers 31 color (dye) the outer surface 5a of the electric wire 3 in a color R with a coloring liquid G, that is, a dye, over the entire circumference of the electric wire 3. The squeegee 13 is arranged downstream of the sprayer 31 in the moving direction of the electric wire 3.

In the electric wire coloring device 30 having the above-described structure, the electric wire 3 moved by the traveling means is passed through the electric wire passage hole 15 of the squeegee 13, and the coloring liquid G is supplied from the pair of sprayers 31 to the entire circumference of the outer surface 5a. To spray. The dye in the coloring liquid G permeates into the coating portion 5. Thus, the pair of sprayers 3
In No. 1, the outer surface 5a is colored with a dye over the entire circumference. Then, the squeegee 13 removes the excess coloring liquid G from the outer surface 5a of the electric wire 3 and wipes off part of the dye that colored the outer surface 5a of the electric wire 3. Thus, the wire coloring device 30
After coloring a part of the outer surface 5a of the electric wire 3 with a dye,
Wipe off part of the dye.

According to this embodiment, the outer surface 5a of the electric wire 3 is
Since it is colored with a dye over the entire circumference, the dye applied to the outer surface 5a can be made thinner than a pigment. Therefore, the time required for the dye to dry can be shortened. Therefore, the dye having the outer surface 5a colored can be dried quickly.

Therefore, it is possible to narrow the gap between the wire coloring device 30 and the unit of the subsequent step which is arranged on the downstream side of the arrow K of the wire coloring device 30 of the above-described embodiment. Therefore, it is possible to reduce the installation space required for the electric wire manufacturing facility and the wire harness manufacturing facility. Further, since the dye having a part of the outer surface 5a colored can be dried quickly, it is not necessary to provide a drying unit or the like for drying the electric wire 3. Therefore, it is possible to suppress a rise in the manufacturing cost of the electric wire and the manufacturing cost of the wire harness.

Also, since part of the dye is wiped off after coloring with the dye, the time taken for the dye to dry can be further shortened. Therefore, the dye having the outer surface 5a colored can be dried more quickly. Further, the outer surface 5 of the covering portion 5
Since the entire circumference of a is colored, the colored wire 3 and the uncolored wire 3 can be reliably colored in a desired color.

Also in this embodiment, as shown in FIG. 8, the outer surface 20a of the flat cable 20 may be colored with a dye R (indicated by parallel diagonal lines in the figure) over the entire circumference. good.

Next, a third embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted. An electric wire coloring device 40 according to the present embodiment shown in FIG.
As shown in FIG. 10, a part of the outer surface 5a of the electric wire 3 is colored with a dye of a color R (indicated by parallel hatching in the figure). In this embodiment, the outer surface 5a of the electric wire 3 is marked with stripes.

As shown in FIG. 9, the wire coloring device 40 includes a traveling means (not shown) and a plurality of markers (Marker) 4.
1 and the squeegee 13 described above. The traveling means moves the electric wire 3 along the longitudinal direction of the electric wire 3.

A pair of markers 41 are provided in the illustrated example. The marker 41 comes into contact with the outer surface 5a of the electric wire 3 to adhere the coloring liquid to a part of the outer surface 5a of the electric wire 3. The pair of markers 41 color (stain) a part of the outer surface 5a of the electric wire 3 to a color R with a coloring liquid, that is, a dye. Squeegee 1
3 is arranged downstream of the marker 41 in the moving direction of the electric wire 3.

In the electric wire coloring device 40 having the above-described structure, the electric wire 3 moved by the traveling means is passed through the electric wire through hole 15 of the squeegee 13, and the marker 41 is brought into contact with the outer surface 5a of the electric wire 3. The marker 41 is the outer surface 5a of the electric wire 3.
Apply the coloring liquid to a part of. The dye in the coloring liquid permeates into the coating portion 5. Thus, the marker 41 is attached to the outer surface 5
Part of a is colored with a dye. And the squeegee 13
The excess coloring liquid is removed from the outer surface 5a of the electric wire 3, and a part of the dye that colored the outer surface 5a of the electric wire 3 is wiped off. In this way, the wire coloring device 40 colors a part of the outer surface 5a of the wire 3 with a dye, and then wipes off a part of the dye.

According to this embodiment, the outer surface 5a of the electric wire 3 is
Since a part of the above is colored with a dye, the dye applied to the outer surface 5a can be made thinner than a pigment. Therefore, the time required for the dye to dry can be shortened. Therefore, the outer surface 5a
The colored dye can be dried quickly.

Therefore, it is possible to narrow the gap between the wire coloring device 40 and the unit of the subsequent step which is arranged on the downstream side of the arrow K of the wire coloring device 40 of the above-described embodiment. Therefore, it is possible to reduce the installation space required for the electric wire manufacturing facility and the wire harness manufacturing facility. Further, since the dye having a part of the outer surface 5a colored can be dried quickly, it is not necessary to provide a drying unit or the like for drying the electric wire 3. Therefore, it is possible to prevent the manufacturing cost of the electric wire and the manufacturing cost of the wire harness from rising.

Further, since part of the dye is wiped off after coloring with the dye, the time taken for the dye to dry can be further shortened. Therefore, the dye having the outer surface 5a colored can be dried more quickly. Further, the outer surface 5 of the covering portion 5
Since a part of a is colored, the plurality of electric wires 3 can be reliably identified.

Also in this embodiment, as shown in FIG. 11, a part of the outer surface 20a of the flat cable 20 is colored with a dye to a color R (indicated by parallel diagonal lines in the figure) to form a stripe shape. It may be marked.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted. An electric wire coloring device 5 shown in FIG. 12 according to the present embodiment.
0, as shown in FIG. 13, a part of the outer surface 5a of the electric wire 3 is colored with a dye of a color R (shown by parallel diagonal lines in the figure). In this embodiment, for example, the outer surface 5 located at the end of the electric wire 3
A mark of color R is formed on a.

As shown in FIG. 12, the wire coloring device 50 is provided with running means (not shown), a wire clamper 51, a stamp 52, and the squeegee 13 described above. The traveling means moves the electric wire 3 along the longitudinal direction of the electric wire 3.

The electric wire clamper 51 is provided with sandwiching members 53, 53 that come into contact with or separate from each other (approach or move away from each other). The electric wire clamper 51 holds the electric wire 3 between the holding members 53. The electric wire clamper 51 clamps the electric wire 3.

The stamp 52 comes into contact with and separates from the electric wire 3 when the sandwiching members 53, 53 come into contact with and separate from each other. The stamp 52 is
When the holding members 53, 53 approach each other, the holding member 5
It contacts the outer surface 5a of the electric wire 3 sandwiched between 3, 53.
The stamp 52 contacts the outer surface 5a of the electric wire 3 and applies the coloring liquid to a part of the outer surface 5a. Squeegee 13
It is arranged on the downstream side of the stamp 52 in the moving direction of the electric wire 3.

In the electric wire coloring device 50 having the above-described structure, the electric wire 3 moved by the traveling means is passed through the electric wire passage hole 15 of the squeegee 13. Further, the electric wire 3 is sandwiched between the sandwiching members 53, 53, and the stamp 52 is attached to the outer surface 5 of the electric wire 3.
Contact a. The stamp 52 is the outer surface 5a of the electric wire 3.
Apply the coloring liquid to a part of. The dye in the coloring liquid permeates into the coating portion 5. In this way, the stamp 52 colors a part of the outer surface 5a with the dye. And squeegee 13
Removes excess coloring liquid from the outer surface 5a of the electric wire 3,
A part of the dye coloring the outer surface 5a of the electric wire 3 is wiped off.
As described above, the wire coloring device 50 is provided with the outer surface 5 of the wire 3.
Part of a is colored with a dye and then part of the dye is wiped off.

According to this embodiment, the outer surface 5a of the electric wire 3 is
Since a part of the above is colored with a dye, the dye applied to the outer surface 5a can be made thinner than a pigment. Therefore, the time required for the dye to dry can be shortened. Therefore, the outer surface 5a
The colored dye can be dried quickly.

Therefore, it is possible to narrow the gap between the wire coloring device 50 and the unit of the subsequent step arranged on the downstream side of the arrow K of the wire coloring device 50 of the above-described embodiment. Therefore, it is possible to reduce the installation space required for the electric wire manufacturing facility and the wire harness manufacturing facility. Further, since the dye having a part of the outer surface 5a colored can be dried quickly, it is not necessary to provide a drying unit or the like for drying the electric wire 3. Therefore, it is possible to suppress a rise in the manufacturing cost of the electric wire and the manufacturing cost of the wire harness.

Further, since part of the dye is wiped off after coloring with the dye, the time taken for the dye to dry can be further shortened. Therefore, the dye having the outer surface 5a colored can be dried more quickly. Further, the outer surface 5 of the covering portion 5
Since a part of a is colored, the plurality of electric wires 3 can be reliably identified.

Also in this embodiment, as shown in FIG. 14, a part of the outer surface 20a of the flat cable 20 may be colored with a dye to a color R (shown by parallel diagonal lines in the figure).

As described above, the gist of the present invention is to color at least a part of the outer surfaces 5a, 20a of the electric wire 3 and the flat cable 20 with a dye.

[0073]

As described above, according to the present invention described in claim 1, at least a part of the outer surface of the electric wire is colored with a dye. Since the electric wire is colored with the dye, the dye applied to the outer surface can be thinner than the paint. Therefore, the time required for the dye to dry can be shortened. Therefore,
A dye having at least a part of its outer surface colored can be dried quickly.

According to the second aspect of the present invention, since part of the dye is wiped off after coloring with the dye, the time required for the dye to dry can be further shortened. Therefore,
The dye in which at least a part of the outer surface is colored can be dried more quickly.

According to the third aspect of the present invention, since a part of the outer surface of the coating portion is colored, it is possible to reliably identify the plurality of electric wires. For this reason, in addition to the fact that the dye as a coloring liquid, which is obtained by coloring a part of the outer surface, can be dried quickly, the electric wires can be reliably distinguished from each other.

According to the present invention as set forth in claim 4, in addition to the fact that the dye as a coloring liquid for coloring the outer surface can be quickly dried, and the entire outer surface of the coating portion is colored, the colored electric wire However, even an uncolored electric wire can be surely colored in a desired color.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of an electric wire coloring apparatus that performs an electric wire manufacturing method according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an electric wire obtained by the electric wire coloring device shown in FIG.

FIG. 3 is a III-II in FIG. 2 of an electric wire as a product of the present invention.
It is sectional drawing which follows the I line.

FIG. 4 is a cross-sectional view of an electric wire as a comparative example.

5 is a perspective view showing a modified example of an electric wire obtained by the electric wire coloring device shown in FIG. 1. FIG.

FIG. 6 is an explanatory diagram showing a configuration of an electric wire coloring apparatus that performs a method of manufacturing an electric wire according to a second embodiment of the present invention.

7 is a perspective view showing an electric wire obtained by the electric wire coloring device shown in FIG. 6. FIG.

8 is a perspective view showing another example of an electric wire obtained by the electric wire coloring device shown in FIG.

FIG. 9 is an explanatory diagram showing a configuration of an electric wire coloring apparatus that performs an electric wire manufacturing method according to a third embodiment of the present invention.

10 is a perspective view showing an electric wire obtained by the electric wire coloring device shown in FIG. 9. FIG.

11 is a perspective view showing another example of an electric wire obtained by the electric wire coloring device shown in FIG.

FIG. 12 is an explanatory diagram showing a configuration of an electric wire coloring device that performs an electric wire manufacturing method according to a fourth embodiment of the present invention.

13 is a perspective view showing an electric wire obtained by the electric wire coloring device shown in FIG.

14 is a perspective view showing another example of an electric wire obtained by the electric wire coloring device shown in FIG.

[Explanation of symbols]

3 electric wires 5a outer surface 20 Flat cable (electric wire) 20a outer surface R1 dye

Claims (4)

[Claims] 1. A method of manufacturing an electric wire for manufacturing an electric wire in which at least a part of the outer surface is colored, wherein at least a part of the outer surface is colored with a dye. 2. A method for producing an electric wire, wherein at least a part of the outer surface is colored, wherein at least a part of the outer surface is colored with a dye, and then a part of the dye is wiped off. And a method of manufacturing an electric wire. 3. The method for producing an electric wire according to claim 1, wherein a part of the outer surface of the electric wire is colored with a dye. 4. The method of manufacturing an electric wire according to claim 1, wherein the outer surface of the electric wire is colored with a dye over the entire circumference.