WO2006001372A1

WO2006001372A1 - Coloring nozzle

Info

Publication number: WO2006001372A1
Application number: PCT/JP2005/011628
Authority: WO
Inventors: Takeshi Kamata; Keigo Sugimura; Sei Saito; Kiyoshi Yagi
Original assignee: Yazaki Corporation
Priority date: 2004-06-25
Filing date: 2005-06-24
Publication date: 2006-01-05
Also published as: EP1775028A1; MXPA06015209A; CN100434195C; JP2006007116A; EP1775028A4; CN1993186A; JP4426911B2; EP1775028B1; PT1775028E

Abstract

A coloring nozzle capable of securely injecting the droplets of a coloring material in a fixed amount each to a specified position on the outer surface of an article. The coloring nozzle (31) colors a wire (3) by injecting the droplets of the liquid coloring material in a fixed amount each to the outer surface (3a) of the wire (3) as the article. The coloring nozzle (31) comprises a nozzle (54) injecting the droplets of the coloring material, a nozzle cover (55), and a washing fluid supply source (62). The nozzle cover (55) covers at least the tip part (37b) of the nozzle (54). The tip face (50b) of the nozzle (54) and the end face (56a) of the nozzle cover (55) are positioned on the same plane. The washing fluid supply source (62) supplies a washing fluid to the inside of the nozzle cover (55). The coloring nozzle (31) injects the droplets of the coloring material from the nozzle (54) in the state of the washing fluid being kept in the nozzle cover (55) by surface tension.

Description

Specification

Coloring nozzle

Technical field

TECHNICAL FIELD [0001] The present invention relates to a coloring nozzle used when coloring an article such as an electric wire provided with a conductive core wire and an insulating covering portion covering the core wire.

Background art

[0002] Various electronic devices are mounted on automobiles or the like as moving bodies. For this reason, the automobile or the like has a wire harness routed to transmit power such as a power source or a control signal from a computer to the electronic device. The wire harness includes a plurality of electric wires and connectors attached to ends of the electric wires.

[0003] The electric wire includes a conductive core wire and a covering portion made of an insulating synthetic resin that covers the core wire. The electric wire is a so-called covered electric wire. The connector includes a terminal fitting and a connector housing that accommodates the terminal fitting. The terminal fitting is also attached to the end of the electric wire, such as a conductive sheet metal, and is electrically connected to the core wire of this electric wire. The connector housing is made of insulating synthetic resin and formed in a box shape. The wire harness is connected to the above-described electronic device by a connector and Uzing, so that each electric wire is electrically connected to the above-described electronic device via a terminal fitting, so that a desired power or signal can be transmitted to the above-described electronic device. Tell.

[0004] When assembling the wire harness, the electric wire is first cut to a predetermined length, and then a covering portion such as an end of the electric wire is removed (peeled) and a terminal fitting is attached. Connect wires as needed. Thereafter, the terminal fitting is inserted into the connector housing. Thus, the above-described wire harness is assembled.

[0005] For the wires of the wire harness described above, 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, etc.), the purpose of use, and the like. The purpose of use is, for example, an automobile system (system) in which a control signal such as an air bag, ABS (Antilock Brake System) or vehicle speed information, or a power transmission system is used.

[0006] Therefore, an electric wire used in a wire harness is a synthetic resin that constitutes the above-described covering portion. When the core is extruded and coated around the core wire, a coloring agent of a desired color is mixed into the synthetic resin constituting the covering portion to color the covering portion into a desired color (for example, Patent Documents 1 to 3). reference). In this case, when changing the color of the outer surface of the electric wire, it is necessary to stop the extrusion coating apparatus that performs the above-described extrusion coating. In this case, it was necessary to stop the extrusion coating device each time the color of the electric wire was changed, and the time and effort required to manufacture the electric wire increased, and the production efficiency of the electric wire tended to decrease.

[0007] Alternatively, the color of the colorant mixed in the synthetic resin has been changed in a state where the extrusion coating apparatus performs extrusion coating. In this case, immediately after the color of the colorant is changed, the color of the synthetic resin constituting the coating portion is a color in which the color of the colorant before the change of the coating portion and the color of the colorant after the change are mixed. . For this reason, it was in the tendency for the material yield of an electric wire to fall.

[0008] In order to prevent the reduction in the productivity of electric wires and the reduction in the material yield of the electric wires, the applicant of the present invention manufactured, for example, a single-color electric wire, and the electric wire as an article as necessary. It is proposed to assemble a wire harness by coloring the outer surface of the wire to a desired color (see Patent Document 4). In addition, the applicant of the present invention, when coloring a single-color electric wire after production, sprays a liquid coloring material by a certain amount toward the outer surface of the electric wire as an article, and the liquid of the coloring material. Propose a wire coloring device that colors the wire in a desired color by attaching droplets to the outer surface of the wire (Patent Document 5)

reference).

Patent Document 1: Japanese Patent Laid-Open No. 5-111947

Patent Document 2: JP-A-6-119833

Patent Document 3: Japanese Patent Laid-Open No. 9-92056

Patent Document 4: Pamphlet of International Publication No. 03Z019580

Patent Document 5: Japanese Patent Application No. 2003-193904

Disclosure of the invention

Problems to be solved by the invention

[0009] The colorant sprayed by a certain amount toward the outer surface of the electric wire described above is a liquid substance in which a colorant (industrial organic substance) is dissolved and dispersed in water or other solvent. Organic substances include dyes and pigments (mostly organic and synthetic products), and sometimes dyes are used as pigments. Thus, pigments are sometimes used as dyes.

[0010] Therefore, in the above-described proposed coloring device for electric wires, when the above-described coloring material is repeatedly sprayed from a coloring nozzle or the like, the above-described dye or pigment adheres to the nozzle, and the attached dye or pigment or It is conceivable that the pigment gradually increases. If the coloring material adheres to the coloring nozzle, the coloring nozzle force is also directed in the desired direction, making it difficult for the coloring material to be sprayed, and it may be difficult to spray the coloring material by a certain amount.

In this case, of course, the desired position of the electric wire is colored, and the area (size) of the portion where the coloring material of the electric wire is attached varies. As described above, the above-mentioned dye or pigment adheres to the nozzle, and it becomes difficult to reliably spray the coloring material by a certain amount by urging the desired position on the outer surface of the electric wire as an article. It is possible.

[0012] Therefore, an object of the present invention is to provide a coloring nozzle capable of reliably spraying a coloring material in a certain amount by directing force to a desired position on the outer surface of an article.

Means for solving the problem

[0013] In order to solve the above-described problems and achieve the object, the coloring nozzle of the present invention sprays a liquid coloring material by a certain amount toward an outer surface of an article, and drops the coloring material droplets. A coloring nozzle that attaches to the outer surface of the article and colors the article; and a container that houses the coloring material, a pressurizing unit that pressurizes the coloring material in the container, and a cylindrical shape. The coloring material flows on the inner side and is connected to and separated from a nozzle communicating with the inside of the housing portion and a base end portion located in the housing portion of the nozzle. A valve body for spraying the colorant from the nozzle; a nozzle cover that covers at least the tip of the nozzle and allows the colorant sprayed from the nozzle to adhere to the article; and the nozzle Colorant adhering to the nozzle in the cover Cleaning liquid supply means for supplying a cleaning liquid for removing the nozzle from the nozzle, and the cleaning liquid power supplied into the nozzle cover from the cleaning liquid supply means while being maintained in the nozzle cover by the surface tension of the cleaning liquid. The colorant is sprayed from the nozzle toward the article.

In the coloring nozzle of the present invention, in the coloring nozzle, an end surface of the nozzle cover facing the article and a tip surface of the nozzle facing the article are provided on the same plane. It is characterized by being! /

[0015] According to the present invention, the cleaning liquid is supplied into the nozzle cover that covers at least the tip of the nozzle. The cleaning liquid is kept in the nozzle cover by the surface tension of the cleaning liquid itself. This ensures that the cleaning liquid is always in contact with the nozzle tip, and the colorant that tends to adhere to the nozzle, in particular the tip, is immediately removed from the nozzle surface by the cleaning liquid.

[0016] The coloring material referred to in the present specification is a liquid material in which a coloring material (industrial organic material) is dissolved and dispersed in water or other solvent. Organic substances include dyes and pigments (mostly organic and synthetic products). Sometimes dyes are used as pigments and pigments are used as dyes. As a more specific example, the colorant referred to in this specification indicates both a colored liquid paint and a paint. The coloring liquid indicates that the dye is dissolved or dispersed in the solvent, and the paint indicates that the pigment is dispersed in the dispersion.

Therefore, when the outer surface of the article is colored with the coloring liquid, the dye soaks into the article, and when the outer surface of the article is colored with the paint, the pigment adheres to the outer surface without penetrating into the article. That is, to color the outer surface of an article in this specification means to dye a part of the outer surface of the article with a dye and to apply a pigment to a part of the outer surface of the article.

[0018] Further, it is desirable that the solvent and the dispersion liquid have affinity for the synthetic resin or the like constituting the article. In this case, the dye is surely soaked into the article and the pigment is surely adhered to the outer surface of the article.

[0019] Further, the droplet spraying described in the present specification means that the coloring nozzle force, the liquid colorant, is urged and urged toward the outer surface of the article in a droplet state, that is, in a droplet state. Shows

[0020] The cleaning liquid described in the present specification is a liquid such as a solvent or a dispersion liquid in which an industrial organic material as a coloring material constituting the above-described coloring material can be dissolved and dispersed. Furthermore, it is desirable that the cleaning liquid is a liquid that does not easily volatilize at room temperature.

According to the present invention, the end surface of the nozzle cover and the tip surface of the nozzle are positioned on the same plane.

Therefore, the cleaning liquid is kept in the nozzle cover so that the cleaning liquid is flush with the end face of the nozzle cover and the front end face of the nozzle by the surface tension. The invention's effect

As described above, according to the present invention, since the cleaning liquid is always in contact with the tip of the nozzle, the coloring material that tends to adhere particularly to the tip of the nozzle during coloring of the article causes the nozzle to wash with the cleaning liquid. The surface force of is removed immediately. For this reason, it is possible to prevent the coloring material from adhering to the nozzle and solidifying during coloring of the article.

[0023] As described above, since the coloring material can be prevented from adhering to the nozzle and solidifying, the coloring material can be reliably sprayed from the nozzle toward the outer surface of the article. In addition, since it is possible to prevent the coloring material from adhering to the nozzle, it is possible to prevent the coloring material adhering to the nozzle or the like from affecting the direction in which the dropped coloring material is ejected. Therefore, the coloring material can be reliably sprayed by a certain amount by directing the force toward the desired position on the outer surface of the product, and the desired position on the outer surface of the article can be colored with the desired color. The location can be kept in the desired area (size).

In the present invention, the cleaning liquid is kept in the nozzle cover so that the end surface of the nozzle cover is flush with the tip surface of the nozzle. For this reason, it is possible to prevent the cleaning liquid from interfering with the coloring material sprayed from the nozzle, and it is possible to prevent the cleaning liquid from affecting the direction in which the sprayed coloring material is ejected. Therefore, the coloring material can be sprayed in a certain amount more reliably by directing the desired position on the outer surface of the article, and the desired position on the outer surface of the article can be reliably colored with the desired color. This makes it possible to more reliably maintain the desired area (size).

Brief Description of Drawings

FIG. 1 is a side view showing a configuration of an electric wire coloring apparatus provided with a coloring nozzle according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the coloring unit of the wire coloring device along the line II-II in FIG.

FIG. 3 is an explanatory diagram showing a positional relationship between each coloring nozzle and an electric wire of the coloring unit shown in FIG. 2.

4 is a cross-sectional view showing a configuration of a nozzle unit of each coloring nozzle of the coloring unit shown in FIG.

FIG. 5 (a) is a perspective view of an electric wire colored by the electric wire coloring device shown in FIG. (b) Fig. 5 is a plan view of the electric wire shown in Fig. 5 (a).

6 is an explanatory diagram for explaining a state in which cleaning liquid is supplied into the nozzle cover of the coloring nozzle shown in FIG.

7 is an explanatory diagram for explaining a state in which the coloring nozzle force coloring material shown in FIG. 4 is sprayed. FIG.

Explanation of symbols

[0026] 3 Electric wire (article)

3a outer surface

31 Coloring nozzle

33 Pressurized gas supply source (pressurizing means)

35 Insert member (receiving part)

37a Base end

37b Tip

39 Flow path

44 Disc

50b Tip surface

54 nozzles

55 Nozzle cover

56a

62 Cleaning liquid supply source (cleaning liquid supply means)

BEST MODE FOR CARRYING OUT THE INVENTION

[0027] Hereinafter, a coloring nozzle 31 that is useful in an embodiment of the present invention will be described with reference to Figs. The coloring nozzle 31 shown in FIG. 4 or the like constitutes an electric wire coloring apparatus (hereinafter simply referred to as a coloring apparatus) 1 as an electric wire processing apparatus as an article shown in FIG. 1 (coloring as an electric wire processing apparatus). Attached to device 1). The coloring device 1 is a device that cuts a wire 3 as an article into a predetermined length and forms a mark 6 on a part of the outer surface 3a of the wire 3 as an article. That is, the coloring device 1 colors, that is, marks, the outer surface 3a of the electric wire 3 as an article. [0028] The electric wire 3 as an article constitutes a wire harness routed to an automobile as a moving body. As shown in FIG. 5 (a), the electric wire 3 includes a conductive core wire 4 and an insulating covering portion 5. The core wire 4 is formed by twisting a plurality of strands. The strands constituting the core wire 4 are made of a conductive metal. Further, the core wire 4 may also be configured with a single wire force. The covering portion 5 is made of a synthetic resin such as polyvinyl chloride (PVC). The covering portion 5 covers the core wire 4. For this reason, the outer surface 3 a of the electric wire 3 forms the outer surface of the covering portion 5.

[0029] The covering portion 5 is a single color P. It should be noted that a desired colorant is mixed in the synthetic resin constituting the covering portion 5, and the outer surface 3a of the electric wire 3 can be made to be a single color P, and a colorant is mixed in the synthetic resin constituting the covering portion 5. The single color P can be used as the color of the synthetic resin itself. When the single color P is the color of the synthetic resin itself without mixing a colorant into the synthetic resin constituting the covering portion 5, the covering portion 5, that is, the outer surface 3a of the electric wire 3, is said to be uncolored. Thus, “non-colored” indicates that the outer surface 3a of the electric wire 3 is the color of the synthetic resin itself without mixing a coloring agent in the synthetic resin constituting the covered portion 5. The outer surface 3a of the electric wire 3 may be uncolored as described above, or may be a single color such as white.

[0030] On the outer surface 3a of the electric wire 3, a mark 6 including a plurality of points 7 is formed. Point 7 is color B (indicated by parallel diagonal lines in FIG. 5). Color B is different from the single color P. The planar shape of point 7 is round as shown in FIG. A plurality of points 7 are provided and arranged along the longitudinal direction of the electric wires 3 in accordance with a predetermined pattern. In the illustrated example, the points 7 are arranged at equal intervals along the longitudinal direction of the electric wire 3. Further, the distance between the centers of the adjacent points 7 is determined in advance.

[0031] A plurality of electric wires 3 having the above-described configuration are bundled and a connector or the like is attached to an end portion or the like to constitute the above-described 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.

[0032] Further, by changing the color B of each point 7 of the mark 6 described above to various colors, the wires 3 can be distinguished from each other. In the example shown in the figure, the force that makes the color B of all the points 7 the same may change the color B for each point 7 as necessary, and make the colors B of the points 7 different. Color 6 of each point 7 of mark 6 Is used to identify the wire type and system (system) of the wire 3 of the wire harness. That is, the color B of each point 7 of the mark 6 described above is used to identify the line type and purpose of use of each wire 3 of the wire harness.

As shown in FIG. 1, the coloring device 1 includes a frame 10 as a device body, a guide roll 11, a feed roll 12 as a moving means, a correction unit 13 as a wire straightening means, and a slack absorbing means. A slack absorbing unit 14, a coloring unit 15, a duct 16, an encoder 17 as a measuring means, a cutting mechanism 18 as a processing means, and a control device 19 as a control means.

[0034] The frame 10 is installed on a floor of a factory or the like. The frame 10 extends in the horizontal direction. The guide roll 11 is rotatably attached to one end of the frame 10. The guide roll 11 has a long electric wire 3 on which no mark 6 is formed. The guide roll 11 sends the electric wire 3 in order to the correction unit 13, the slack absorbing unit 14, the coloring unit 15, the duct 16, the encoder 17, and the cutting mechanism 18.

A pair of delivery rolls 12 is provided at the other end of the frame 10. The pair of delivery rolls 12 are rotatably supported by the frame 10 and are arranged along the vertical direction. The delivery roll 12 is rotated at the same rotational speed in opposite directions by a motor (not shown). The pair of delivery rolls 12 sandwiches the electric wire 3 between each other and pulls it from the guide roll 11 along the longitudinal direction of the electric wire 3 in parentheses.

[0036] The delivery roll 12 constitutes a pulling means that pulls and moves the electric wire 3 along the longitudinal direction of the electric wire 3. In this way, the delivery roll 12 moves the electric wire 3 along the longitudinal direction of the electric wire 3 so that the coloring nozzle 31 described later of the coloring unit 15 and the electric wire 3 are relatively moved along the longitudinal direction of the electric wire 3. Move. For this reason, the electric wire 3 moves along the arrow K in FIG. The arrow indicates the direction of movement of wire 3.

The correction unit 13 is provided on the guide roll 11 on the delivery roll 12 side, and is provided between the guide roll 11 and the delivery roll 12. That is, the straightening unit 13 is provided downstream of the guide roll 11 in the movement direction K of the electric wire 3, and is provided upstream of the supply roll 12 in the movement direction K of the electric wire 3. The straightening unit 13 is a plate unit A body 20, a plurality of first rollers 21, and a plurality of second rollers 22 are provided. The unit body 20 is fixed to the frame 10.

[0038] The first and second rollers 21 and 22 are rotatably supported by the unit main body 20, respectively. The plurality of first rollers 21 are arranged along the horizontal direction (the moving direction K described above) and are arranged above the electric wires 3. The plurality of second rollers 22 are arranged along the horizontal direction (the moving direction K described above) and are arranged below the electric wire 3. As shown in FIG. 1, the first roller 21 and the second roller 22 are arranged in a staggered manner.

The correction unit 13 sandwiches the electric wire 3 fed from the guide roll 11 by the feed roll 12 between the first roller 21 and the second roller 22. And the correction unit 13 makes the electric wire 3 straight. Further, the correction unit 13 applies a frictional force to the electric wire 3 by being sandwiched between the first roller 21 and the second roller 22.

That is, the correction unit 13 applies a first biasing force HI in the direction opposite to the direction in which the feed roll 12 pulls the electric wire 3 (the movement direction K described above) to the electric wire 3. This first biasing force HI is weaker than the force with which the delivery roll 12 pulls the electric wire 3. For this reason, the correction unit 13 applies a tension along the longitudinal direction to the electric wire 3.

The slack absorbing unit 14 is provided on the delivery roll 12 side of the correction unit 13, and is provided between the correction unit 13 and the delivery roll 12. That is, the slack absorbing unit 14 is provided downstream of the correction unit 13 in the movement direction K of the electric wire 3, and is provided upstream of the movement direction K of the electric wire 3 from the delivery roll 12. The slack absorbing unit 14 is provided between the correcting unit 13 and a coloring nozzle 31 (to be described later) of the coloring unit 15! /.

As shown in FIG. 1, the slack absorbing unit 14 includes a pair of guide roller support frames 23, a pair of guide rollers 24, a moving roller support frame 25, a moving roller 26, and an urging means. The air cylinder 27 is provided. The guide roller support frame 23 is fixed to the frame 10. The guide roller support frame 23 is erected upward from the frame 10. The pair of guide roller support frames 23 are arranged along the moving direction K of the electric wire 3 with a space therebetween.

The pair of guide rollers 24 is rotatably supported by the guide roller support frame 23. The guide roller 24 is arranged below the electric wire 3 and is moved by contacting the electric wire 3 on the outer peripheral surface. Direction of movement K also guides the wire 3 so that the wire 3 does not fall off. For this reason, the guide roller 24 guides the moving direction の of the electric wire 3.

The moving roller support frame 25 is fixed to the frame 10. The moving roller support frame 25 is erected upward from the frame 10. The moving roller support frame 25 is provided between the pair of guide roller support frames 23.

[0045] The moving roller 26 is rotatably supported by the moving roller support frame 25 and is supported so as to be movable along the vertical direction. The moving roller 26 is disposed above the electric wire 3. The moving roller 26 is supported so as to be movable along the direction orthogonal to (crossing) the moving direction の of the electric wire 3 by being supported so as to be movable along the vertical direction. The moving roller 26 is provided at the center between the guide rollers 24.

The air cylinder 27 includes a cylinder body 28 and an expansion / contraction rod 29 that can be expanded and contracted from the cylinder body 28. The cylinder body 28 is fixed to the moving roller support frame 25 and is disposed above the electric wire 3. The telescopic rod 29 extends downward from the cylinder body 28. That is, the telescopic rod 29 extends from the cylinder body 28 in a direction approaching the electric wire 3.

[0047] A movable roller 26 is attached to the telescopic rod 29. The air cylinder 27 is supplied with pressurized gas into the cylinder body 28, so that the telescopic rod 29, i.e., the moving roller 26 is perpendicular to the moving direction で with a second urging force Η2 (shown in Fig. 1) ( Energize downward along the crossing direction. Therefore, the air cylinder 27 urges the moving roller 26 in the direction approaching the electric wire 3 with the second urging force Η2. The second biasing force Η2 is weaker than the first biasing force HI.

[0048] When a later-described pair of cutting blades 48, 49 of the cutting mechanism 18 approach each other and cut the electric wire 3, and when the electric wire 3 stops, the electric wire 3 advances along the arrow K due to inertia. The wire 3 is slackened between the pair of guide rollers 24. At this time, in the slack absorbing unit 14 configured as described above, since the air cylinder 27 urges the moving roller 26 with the second urging force H2, the telescopic rod 29 of the air cylinder 27 extends, and the moving roller 26 Moves to the position indicated by the two-dot chain line in Fig. 1, for example. The slack absorbing unit 14 urges the slackened electric wire 3 between the above-described guide rollers 24 along the direction perpendicular to (crossing) the moving direction K, absorbs the slack, and stretches the electric wire 3. Keep on. The coloring unit 15 is provided on the feeding roll 12 side of the slack absorbing unit 14, and is provided between the slack absorbing unit 14 and the sending roll 12. That is, the coloring unit 15 is provided downstream of the slack absorbing unit 14 in the movement direction K of the electric wire 3, and is provided upstream of the sending port 12 in the movement direction K of the electric wire 3. For this reason, the coloring unit 15, that is, a coloring nozzle 31 described later, is disposed between the feed roll 12 and the correction unit 13.

As shown in FIG. 2, the coloring unit 15 includes a unit main body 30 and a plurality of coloring nozzles 31. The unit body 30 is fixed to the frame 10. The unit body 30 supports a plurality of coloring nozzles 31.

[0051] The coloring nozzle 31 having the above-described configuration sprays a liquid coloring material from a coloring material supply source 32, which will be described later, on the outer surface 3a of the electric wire 3 by a predetermined amount. The coloring nozzle 31 attaches the droplets of the colored material sprayed onto the outer surface 3a of the electric wire 3, and colors (marks) at least a part of the outer surface 3a of the electric wire 3. The detailed configuration of the coloring nozzle 31 will be described later.

[0052] When the coloring nozzles 31 are attached to the unit body 30, a plurality of the coloring nozzles 31 are arranged along the moving direction K of the electric wires 3. In the illustrated example, the unit main body 30 arranges five colored nozzles 31 along the moving direction K of the electric wire 3!

Further, as shown in FIG. 3, each coloring nozzle 31 has an uppermost portion 3b of the electric wire 3 on an extension of an axis R (shown by a one-dot chain line in FIG. 3) of a first nozzle member 37 described later. In the state where is located, it is supported by the mute body 30. The coloring nozzle 31 sprays the coloring material along the axis R. For this reason, the coloring nozzle 31 sprays the coloring material by a certain amount toward the uppermost part 3b of the electric wire 3.

The coloring unit 15 having the above-described configuration is applied to a coil 40 of an arbitrary coloring nozzle 31 based on a command from the control device 19, and a valve body 44 described later is a base end of the first nozzle member 37. Leave part 37a. Then, the coloring unit 15 sprays the coloring material in the flow path 39 of an arbitrary coloring nozzle 31 by a certain amount toward the electric wire 3 in a direct direction.

[0055] In the present specification, a coloring material having a viscosity of lOmPa's (millipascal second) or less is used. The colorant mentioned above is a colorant (industrial organic substance) dissolved or dispersed in water or other solvent. It is a liquid substance. Examples of organic substances include dyes and pigments (mostly organic substances and synthetic products). Sometimes dyes are used as pigments and pigments are used as dyes. As a more specific example, the coloring material is a coloring liquid or a paint.

[0056] The coloring liquid indicates that the dye is dissolved or dispersed in the solvent, and the paint indicates that the pigment is dispersed in the dispersion. For this reason, if the colored liquid adheres to the outer surface 3a of the wire 3, the dye penetrates into the coated portion 5, and if the paint adheres to the outer surface 3a of the electric wire 3, the pigment does not penetrate into the coated portion 5. Adhere to surface 3a.

That is, the coloring unit 15 dyes a part of the outer surface 3 a of the electric wire 3 with a dye or applies a pigment to the outer surface 3 a of the electric wire 3. For this reason, coloring the outer surface 3a of the electric wire 3 means that a part of the outer surface 3a of the electric wire 3 is dyed (dyed) and a pigment is applied to a part of the outer surface 3a of the electric wire 3. Is shown.

[0058] Further, it is desirable that the solvent and the dispersion have an affinity for the synthetic resin constituting the covering portion 5. In this case, the dye is surely soaked into the coating portion 5, and the pigment is surely adhered to the outer surface 3a.

[0059] Further, the above-described droplet spraying indicates that the colored nozzle 31 is in the state of liquid colorant droplets, that is, in the state of droplets, and is ejected by being urged toward the outer surface 3a of the electric wire 3 by force. ing.

The duct 16 is provided on the feeding roll 12 side of the coloring unit 15 and is provided between the coloring unit 15 and the sending roll 12. That is, the duct 16 is provided downstream of the coloring unit 15 in the movement direction K of the electric wire 3, and is provided upstream of the feeding roll 12 in the movement direction K of the electric wire 3. The duct 16 is formed in a cylindrical shape, and the electric wire 3 is passed inside. A suction means (not shown) such as a vacuum pump is connected to the duct 16. The suction means sucks the gas in the outside 16 and prevents the solvent and dispersion in the coloring material from filling the outside of the coloring device 1.

The encoder 17 is provided on the downstream side in the moving direction K of the electric wire 3 from the feed roll 12. The encoder 17 includes a pair of rotors 47 as shown in FIG. The rotor 47 is supported so as to be rotatable around the axis. The outer peripheral surface of the rotor 47 is in contact with the outer surface 3 a of the electric wire 3 sandwiched between the pair of delivery ports 12. The rotor 47 rotates along the arrow K when the core wire 4, that is, the electric wire 3 travels (moves). That is, the rotor 47 is As the core 4 along the wire 3 runs (moves), it rotates around the axis. Of course, the amount of travel (movement) of the core wire 4, that is, the electric wire 3 along the arrow is proportional to the rotational speed of the rotor 47.

The encoder 17 is connected to the control device 19. When the rotor 47 rotates by a predetermined angle, the encoder 17 outputs a pulse-like signal to the control device 19 by force. That is, the encoder 17 outputs information corresponding to the amount of movement of the electric wire 3 along the arrow K to the control device 19.

In this manner, the encoder 17 measures information according to the amount of movement of the electric wire 3 and outputs information corresponding to the amount of movement of the electric wire 3 to the control device 19 by force. Normally, the encoder 17 outputs a pulse signal corresponding to the amount of movement of the electric wire 3 due to the friction between the electric wire 3 and the rotor 47. However, if the amount of movement and the number of pulses do not always match depending on the state of the outer surface 3a of the wire 3, speed information may be obtained at another location, the information may be fed back, and a comparison operation may be performed.

[0064] The cutting mechanism 18 is arranged downstream of the pair of rotors 47 of the encoder 17 in the moving direction K of the electric wire 3. The cutting mechanism 18 includes a pair of cutting blades 48 and 49. The pair of cutting blades 48 and 49 are arranged along the vertical direction. The pair of cutting blades 48 and 49 move toward and away from each other along the vertical direction. When the pair of cutting blades 48 and 49 come close to each other, the electric wire 3 fed by the pair of feeding rolls 12 is sandwiched between each other and cut. The pair of cutting blades 48 and 49 are, of course, separated from the electric wire 3 when separated from each other.

[0065] The control device 19 is a computer including a known RAM, ROM, CPU, and the like. The control device 19 is connected to the feed roll 12, the encoder 17, the cutting mechanism 18, the coloring nozzle 31, and the like, and controls the entire coloring device 1 by controlling these operations.

The control device 19 stores a pattern of the mark 6 in advance. When a predetermined pulse-shaped signal, that is, information corresponding to the amount of movement of the electric wire 3 is input from the encoder 17, the control device 19 applies a predetermined time to the coil 40 of the coloring nozzle 31 for a predetermined time. From the point of view, the coloring material is sprayed by a certain amount by directing it toward the electric wire 3. The control device 19 shortens the time interval for spraying the coloring material from the coloring nozzle 31 when the moving speed of the electric wire 3 increases according to the pattern of the mark 6 stored in advance, and the coloring nozzle 31 when the moving speed of the electric wire 3 decreases. Increase the time interval for spraying the colorant. In this way, the control device 19 uses the previously stored pattern. Therefore, the electric wire 3 is colored. Based on the amount of movement of the electric wire 3 measured by the encoder 17, the control device 19 causes the coloring nozzle 31 to spray the coloring material by a predetermined amount.

[0067] When the control device 19 determines that the electric wire 3 has moved by a predetermined amount based on the information from the encoder 17, after stopping the feed roll 12, the control device 19 brings the pair of cutting blades 48 and 49 closer to each other to move the electric wire 3 Disconnect.

As shown in FIGS. 1 to 3, the coloring nozzle 31 includes a nozzle unit 52 and a liquid supply unit 53. As shown in FIG. 4, the nozzle unit 52 includes a cylindrical (cylindrical) nozzle body 34, an insert member 35 accommodated in the nozzle body 34, an inflow pipe 36, a nozzle 54, and a valve mechanism. 38 and a nozzle cover 55 are provided.

[0069] The insert member 35 is formed in a cylindrical shape (tubular shape), and a flow path 39 through which a coloring material passes is formed inside. The flow path 39 is filled with a coloring material supplied from a coloring material supply source 32 described later. The insert member 35 constitutes a housing portion that houses the liquid coloring material described in this specification. The inflow pipe 36 communicates with the flow path 39 and guides the coloring material from the coloring material supply source 32 into the flow path 39.

[0070] The nozzle 54 includes a first nozzle member 37, a second nozzle member 50, and a connection pipe 51. The first nozzle member 37 is formed in a cylindrical shape and communicates with the inside of the flow path 39, and guides the coloring material in the flow path 39 to the outside of the coloring nozzle 31. The inner diameter of the first nozzle member 37 is smaller than the inner diameter of the nozzle body 34, that is, the outer diameter of the flow path 39. The first nozzle member 37 is arranged coaxially with the nozzle body 34. The first nozzle member 37 is made of stainless steel.

[0071] The second nozzle member 50 is formed in a cylindrical shape. The second nozzle member 50 is made of a polyetheretherketone (hereinafter referred to as PEEK) force. The outer diameter of the second nozzle member 50 is equal to the outer diameter of the first nozzle member 37. In this manner, the nozzle 54 communicates with the insert member 35 while the coloring material flows inside.

Further, the inner diameter of the second nozzle member 50 is smaller than the inner diameter of the first nozzle member 37. The second nozzle member 50 is arranged coaxially with the first nozzle member 37 and is connected to the first nozzle member 37.

The second nozzle member 50 is disposed closer to the electric wire 3 than the first nozzle member 37. Further, the first nozzle member 37 and the second nozzle member 50 are watertight. Second nozzle The coloring material flows through the member 50 and the first nozzle member 37 along the arrow Q along the longitudinal direction of the first nozzle member 37. The arrow Q indicates the direction in which the colorant flows.

For this reason, the end surface 50a of the second nozzle member 50 near the first nozzle member 37 projects the inner surface force of the first nozzle member 37 toward the inner side of the first nozzle member 37. Yes. Further, the end face 50a is formed flat along a direction orthogonal to (intersects) the arrow Q. The end face 50 a forms a step, and is formed between the first nozzle member 37 and the second nozzle member 50.

[0075] The connection pipe 51 is made of fluorine resin and is formed in a cylindrical shape. The inner diameter of the connection pipe 51 is substantially equal to the outer diameter of the first nozzle member 37 and the second nozzle member 50. The connection pipe 51 is fitted to the outside of both the first nozzle member 37 and the second nozzle member 50, and connects the first nozzle member 37 and the second nozzle member 50. . In addition, the connection pipe 51 makes the second nozzle member 50 detachable from the first nozzle member 37.

The valve mechanism 38 includes a coil 40, a valve body 41, and a coil spring 42. The coil 40 is provided outside the flow path 39 and embedded in the insert member 35. An electric current is applied to the coil 40 from the outside. The valve main body 41 includes a conductive main body 43 and a valve body 44. The main body 43 is integrally provided with a cylindrical cylindrical portion 45 and a disk-shaped disc portion 46 that is continuous with one end of the cylindrical portion 45.

The main body 43 has a flow path 39 in a state in which the disk portion 46 is opposed to the base end portion 37a of the first nozzle member 37 and the longitudinal direction of the cylindrical portion 45 is parallel to the longitudinal direction of the nozzle body 34. It is housed inside. The main body 43, that is, the valve main body 41 is provided so as to be movable along the longitudinal direction of the cylindrical portion 45, that is, the longitudinal direction of the nozzle main body 34.

The valve body 44 is attached to the disc part 46 of the main body part 43. That is, the valve body 44 is accommodated in the insert member 35. The valve body 44 is relative to the base end portion 37 a of the first nozzle member 37. Since the valve body 44 is attached to the disc portion 46 of the main body portion 43, the valve body 44 can be freely contacted and separated from the base end portion 37 a of the first nozzle member 37. In addition, approaching / separating means approaching or leaving. Further, the base end portion 37 a of the first nozzle member 37 described above forms a base end portion located in the insert member 35 as a storage portion of the nozzle 54.

[0079] When the valve body 44 contacts the base end portion 37a of the first nozzle member 37, the valve body 44 is not in contact with the base end portion 37a. The colorant in the flow path 39 is prevented from intruding into the first nozzle member 37. Further, when the valve body 44 is separated from the base end portion 37a of the first nozzle member 37, the coloring material passes through the first nozzle member 37 and the second nozzle member 50, and the coloring material is applied to the outer surface 3a of the electric wire 3. Allow to be sprayed towards.

In this way, the valve body 44 contacts and separates from the base end portion 37a over the open position indicated by a two-dot chain line in FIG. 4 and the closed position indicated by a solid line in FIG. In the open position, the valve body 44 is separated from the base end portion 37 a and causes the coloring material to drop onto the electric wire 3 through the first nozzle member 37 and the second nozzle member 50. In the closed position, the valve body 44 comes into contact with the base end portion 37a and restricts the coloring material from being directed and sprayed onto the electric wire 3 through the first nozzle member 37 and the second nozzle member 50. . The valve body 44 is brought into contact with and separated from the base end portion 37a, so that the coloring material is sprayed from the nozzle 54.

The coil spring 42 urges the disc portion 46 in a direction in which the valve body 44 approaches the proximal end portion 37 a of the first nozzle member 37.

The nozzle cover 55 includes a cover body 56 whose outer diameter is constant in the axial direction and whose inner diameter changes stepwise, a nozzle fixing member 57, and a cleaning liquid inflow pipe 58. The cover body 56 is attached to the unit body 30. The cover body 56 changes the inner diameter stepwise. The nozzle body 34 of the nozzle unit 52 is positioned on the stepped surface 59, the inflow pipe 36 of the nozzle unit 52 is positioned above, and the nozzle members 37, 50 are positioned below. The nozzle cue 52 is accommodated in the state.

In addition, the cover main body 56 is provided with a packing 60 between the step surface 59 and the nozzle main body 34 of the nozzle unit 52 so as to keep the watertight therebetween. Furthermore, a space 61 is provided between the cover main body 56 and the nozzle members 37 and 50 shell IJ or nozzle 54. The space 61 is open at the bottom. For this reason, the nozzle cover 55 does not prevent (allow) the coloring material sprayed by the nozzle 54 force from adhering to the electric wire 3.

[0084] Further, the end surface 56a of the cover main body 56 facing the electric wire 3 and the tip surface 50b of the second nozzle member 50 facing the electric wire 3 are located on the same plane (they are flush with each other). ) Note that the end face 56a of the cover body 56 facing the electric wire 3 forms a tip face of the nozzle cover 55 described in the present specification that faces the electric wire 3. The tip surface 50b of the second nozzle member 50 forms a tip surface facing the electric wire 3 of the nozzle 54 described in this specification. Further, the tip portion 37b of the first nozzle member 37 near the electric wire 3 forms the tip portion of the nozzle 54 described in this specification. For this reason, the nozzle cover 55 covers at least the distal end portion 37b of the first nozzle member 37 as the distal end portion of the nozzle 54.

As shown in FIG. 2, the nozzle fixing member 57 is attached to the cover main body 56, and fixes the nozzle unit 52 to the cover main body 56. The nozzle fixing member 57 keeps the cover body 56 and the nozzle unit 52 coaxial.

The cleaning liquid inflow pipe 58 communicates with the space 61 between the nozzle 54 and the cover body 56 described above, and guides cleaning liquid from a cleaning liquid supply source 62 described later into the space 61.

[0088] As shown in Figs. 2 and 3, the liquid supply unit 53 includes a plurality of coloring material supply sources 32 as coloring material supply means, a cleaning liquid supply source 62 as cleaning liquid supply means, and a pressurizing means. The pressurized gas supply source 33 is provided. The coloring material supply source 32 is a container that stores the coloring material, and supplies the coloring material into the inflow pipe 36 of the coloring nozzle 31. One coloring material supply source 32 corresponds to each coloring nozzle 31. The color B of the color material supplied from the color material supply source 32 to the color nozzle 31 may be different from each other or the same.

The cleaning liquid supply source 62 is a container that stores the cleaning liquid, and supplies the cleaning liquid into the cleaning liquid inflow pipe 58. One cleaning liquid supply source 62 may be provided corresponding to each coloring nozzle 31, or one cleaning liquid supply source 62 may be provided corresponding to all the coloring nozzles 31. The cleaning liquid is a liquid such as a solvent or a dispersion that can dissolve and disperse the organic material for industrial use as the coloring material constituting the coloring material described above. Furthermore, it is desirable that the cleaning liquid is a liquid that does not easily evaporate at room temperature.

The pressurized gas supply source 33 supplies the pressurized gas to both the colorant supply source 32 and the cleaning liquid supply source 62. The pressurized gas supply source 33 supplies the pressurized gas to both the colorant supply source 32 and the cleaning liquid supply source 62, so that the insert members of the colorant supply source 32 and the colored nozzles 31 are inserted. While pressurizing the coloring material in 35, the cleaning liquid in the cleaning liquid supply source 62 and the space 61 of each coloring nozzle 31 is pressurized.

[0091] The pressurized gas supply source 33 pressurizes the coloring material in each coloring material supply source 32 and the insert member 35 of each coloring nozzle 31, so that the valve body 44 of the coloring nozzle 31 is the first nozzle. When separated from the base end portion 37 a of the member 37, the coloring material in the flow path 39 quickly becomes the first nozzle member 37 and And the second nozzle member 50 is sprayed.

Further, a valve 63 is provided between the cleaning liquid supply source 62 and the cleaning liquid inflow pipe 58 of the nozzle cover 55 of each coloring nozzle 31. When the valve is opened, the cleaning liquid is supplied from the cleaning liquid supply source 62 into the space 61, and when the valve is closed, the supply of the cleaning liquid from the cleaning liquid supply source 62 into the space 61 is stopped.

The coloring nozzle 31 having the above-described configuration guides the coloring material from the coloring material supply source 32 into the flow path 39 through the inflow pipe 36. Then, in a state where the coil 40 is not applied, the biasing force of the coil spring 42 causes the valve body 44 to contact the base end portion 37a of the first nozzle member 37, and the coloring material is positioned in the flow path 39. ing.

Further, the coloring nozzle 31 having the above-described configuration opens the above-described valve 63 before coloring the wires 3 and supplies the cleaning liquid in the cleaning liquid supply source 62 into the space 61. The cleaning liquid supplied into the space 61 is gradually filled between the nozzle 54 and the cover body 56 so that the downward force does not leak out of the cover body 56 due to the surface tension of the cleaning liquid itself. Then, when the space 61 is filled, the cleaning liquid leaks out of the cover body 56 through the opening provided below the cover body 56 as shown in FIG.

Then, the cleaning solution dissolves or disperses the coloring material solidified by adhering to the surface of the nozzle portion 54 of the coloring nozzle 31, particularly the tip portion 37 b and the tip surface 50 b, and disperses it. Remove from surface 7b and tip 50b. Therefore, the cleaning liquid is a liquid that removes the coloring material adhering to the nozzle 54 from the nozzle 54. In this way, the nozzle 54 is cleaned.

[0096] When the cleaning of the nozzle 54 is completed, the above-described valve 63 is closed. Then, the supply of the cleaning liquid from the cleaning liquid supply source 62 to the space 61 described above is stopped. Then, the cleaning liquid force supplied from the cleaning liquid supply source 62 into the nozzle cover 55 is maintained in the space 61 (nozzle cover 55) described above between the nozzle cover 55 and the nozzle by the surface tension of the cleaning liquid itself. The cleaning liquid will not leak from the nozzle cover 55. Then, as shown in FIG. 7, the above-mentioned space 61, that is, the surface of the cleaning liquid in the nozzle cover 55 (also referred to as an interface) T force is kept flush with the above-described end face 56a and tip face 50b.

[0097] When the current is applied to the coil 40, the coloring nozzle 31 has the valve body 44 attached to the disk portion 46 against the urging force of the coil spring 42. Base end 37a The colorant in the flow path 39 is separated from the first nozzle member 37 and the second nozzle member 50 along the arrow Q. Then, the coloring nozzle 31 sprays the coloring material from the second nozzle member 50. The coil 40 is applied for a predetermined time based on a command from the control device 19. For this reason, the coloring nozzle 31 removes the coloring material from the nozzle 3 by a certain amount from the nozzle 54 while the cleaning liquid supplied from the cleaning liquid supply source 62 into the nozzle cover 55 is kept in the nozzle cover 55 by the surface tension. Directly spray on surface 3a.

When forming the mark 6 on the outer surface 3 a of the electric wire 3 with the coloring device 1 having the above-described configuration, that is, when coloring the outer surface 3 a of the electric wire 3, first, the guide roll 11 is attached to the frame 10. A pair of cutting blades 48 and 49 are separated from each other, and the wire 3 wound around the guide roll 11 is passed through the correction unit 13, the slack absorbing unit 14, the coloring unit 15 and the duct 16 in this order, and a pair of feed rolls. Put between 12. A coloring nozzle 31 is attached to a predetermined portion of the unit main body 30 of the coloring unit 15, and a coloring material supply source 32 and a cleaning liquid supply source 62 are connected to each coloring nozzle 31. Further, the pressurized gas supply source 33 is connected to both the colorant supply source 32 and the cleaning liquid supply source 62, and the gas in the duct 16 is sucked by the bow I means.

[0099] Then, the feed roll 12 is driven to rotate, and the electric wire 3 is pulled from the guide roll 11 and moved along the longitudinal direction of the electric wire 3, and the first biasing force HI is applied to the electric wire 3 by the correction unit 13. The electric wire 3 is stretched by applying the frictional force. Then, the moving roller 26, that is, the electric wire 3 is urged by the air cylinder 27 with the second urging force H2. Further, as described above, the coloring material is supplied from the coloring material supply source 32 into the flow path 39 of the coloring nozzle 31, and the cleaning solution is supplied from the cleaning solution supply source 62 into the space 61 as described above.

[0100] Then, when a pulse-like signal in a predetermined order is input from the encoder 17 to the control device 19, the control device 19 applies a predetermined time to the coil 40 of the coloring nozzle 31 at predetermined intervals. To do. Then, the coloring nozzle 31 sprays the coloring material toward the outer surface 3a of the electric wire 3 by a certain amount.

[0101] Then, the coloring material force adhering to the outer surface 3a of the electric wire 3 evaporates, and the outer surface 3a of the electric wire 3 is dyed or dyed on the outer surface 3a. The coloring material force adhering to the outer surface 3a of the electric wire 3 The evaporated solvent or dispersion is sucked into the suction means from the duct 16. Thus, the outer surface 3a of the electric wire 3 is colored. If the control device 19 determines that the electric wire 3 having a predetermined length has been sent out based on information from the encoder 17 or the like, the control device 19 stops the sending roll 12. Then, in particular, the electric wire 3 is loosened between the pair of guide rollers 24 of the slack absorbing unit 14, and the moving roller 26 urged by the second urging force H2 is displaced to the position indicated by the two-dot chain line in FIG. To do. Then, the telescopic rod 29 of the air cylinder 27 of the slack absorbing unit 14 extends. Then, the slack absorbing unit 14 absorbs slack of the electric wire 3.

Then, the pair of cutting blades 48 and 49 force S approaches each other, and the electric wire 3 is sandwiched between the cutting blades 48 and 49 and cut. In this way, the electric wire 3 having the mark 6 formed on the outer surface 3a shown in FIG. 5 and the like is obtained.

[0104] Further, when the liquid coloring material is sprayed from the coloring nozzle 31 to the outer surface 3a of the electric wire 3 by a constant amount, the first nozzle member 37 and the arrow Q along the axis R are A part of the coloring material flowing in the second nozzle member 50 collides with the end surface 50 a of the second nozzle member 50. Then, a part of the coloring material colliding with the end face 50a generates a vortex indicated by an arrow S in FIG. 7 and stirs the coloring material. Then, the concentration of the coloring material in the second nozzle member 50 is kept uniform.

[0105] Further, when the liquid coloring material is sprayed from the coloring nozzle 31 to the outer surface 3a of the electric wire 3 by a constant amount, the coloring material is introduced from the flow path 39 into the first nozzle member 37. If it penetrates, the pressure of the coloring material increases. The colorant pressure is substantially constant in the first nozzle member 37. When a part of the coloring material collides with the end face 50a, the pressure of the coloring material increases rapidly. Then, when the droplets are sprayed from the second nozzle member 50 to the outer surface 3a of the electric wire 3 or the like, the pressure of the coloring material rapidly decreases.

[0106] Further, when the liquid coloring material is sprayed from the coloring nozzle 31 to the outer surface 3a of the electric wire 3 by a constant amount, the coloring material is introduced from the flow path 39 into the first nozzle member 37. If it penetrates, the flow rate (speed) of the coloring material becomes low. The flow rate (speed) of the coloring material is substantially constant in the first nozzle member 37, and the flow rate is slow and constant according to the direction force applied to the second nozzle member 50.

[0107] When a part of the coloring material collides with the end face 50a, the flow velocity (speed) of the coloring material increases rapidly. Then, when the droplet is sprayed from the second nozzle member 50 to the outer surface 3a of the electric wire 3 or the like, The speed of the colorant remains fast. As described above, when the coloring material enters the second nozzle member 50, the pressure and flow velocity (speed) of the coloring material are rapidly increased or increased. Then, the liquid coloring material having a high pressure and a high flow velocity is directed and sprayed onto the outer surface 3a of the electric wire 3.

According to the present embodiment, the cleaning liquid is supplied into the nozzle cover 55 that covers at least the tip end portion 37b of the nozzle 54. The cleaning liquid is kept in the nozzle cover 55 by the surface tension of the cleaning liquid itself. As a result, the cleaning liquid is always in contact with the tip portion 37b of the nozzle 54, and the coloring material that tends to adhere particularly to the tip portion 37b of the nozzle 54 is immediately removed from the surface of the nozzle 54 by the cleaning solution. For this reason, it is possible to prevent the coloring material from adhering to the nozzle 54 and solidifying while the electric wire 3 is colored.

[0109] As described above, since the coloring material can be prevented from adhering to the nozzle 54 and solidifying, the coloring material can be reliably sprayed by applying force to the outer surface 3a of the electric wire 3 by a certain amount. Further, since the coloring material can be prevented from adhering to the nozzle 54, of course, the coloring material adhering to the nozzle 54 or the like can be prevented from affecting the direction in which the dropped colorant is ejected. Therefore, it is possible to reliably spray a certain amount of the coloring material toward the desired position on the outer surface 3a of the electric wire 3 and to color the desired position on the outer surface 3a of the electric wire 3 in a desired color. At the same time, the colored area (point 7 described above) can be maintained in the desired area (size).

[0110] Since the end surface 56a of the nozzle cover 55 and the front end surface 50b of the nozzle 54 are located on the same plane, the cleaning liquid is flush with the end surface 56a of the nozzle cover 55 and the front end surface 50b of the nozzle 54 by the surface tension. Keep it inside the nozzle cover 55. Therefore, the cleaning liquid can be prevented from interfering with the colorant sprayed from the nozzle 54, and the cleaning liquid can be prevented from affecting the direction in which the colorant sprayed is ejected. Therefore, the coloring material can be more reliably sprayed by a certain amount by directing the desired position on the outer surface 3a of the electric wire 3, and the desired position on the outer surface 3a of the electric wire 3 can be reliably colored with the desired color. In addition, the colored portion (the point 7 described above) can be reliably maintained with a desired area (size).

[0111] The coloring material collides with the end face 50a of the second nozzle member 50 and is agitated. Further, since the first nozzle member 37 and the second nozzle member 50 are arranged coaxially and the end face 50a is orthogonal to (intersects) the arrow Q, the colorant is more reliably agitated. For this reason, the concentration of the dye or pigment in the colorant is kept uniform. For this reason, coloring materials with extremely high concentrations are colored. Adhering to the nozzle 54 of the nozzle 31 can be prevented.

[0112] Further, when entering the second nozzle member 50 from the first nozzle member 37, the coloring material is rapidly pressurized. For this reason, the coloring material sprayed from the second nozzle member 50 toward the outer surface 3a of the electric wire 3 is vigorously pushed out toward the outer surface 3a of the electric wire 3. For this reason, the coloring material can be prevented from adhering to the second nozzle member 50.

[0113] As described above, since the coloring material can be prevented from adhering to the second nozzle member 50, the coloring material is surely directed from the second nozzle member 50 to the outer surface 3a of the electric wire 3 by a certain amount. Can be dripping. In addition, since the coloring material can be prevented from adhering to the second nozzle member 50, the coloring material adhering to the second nozzle member 50 or the like of course has an influence on the direction in which the colored material is sprayed. It can prevent giving. Therefore, the coloring material can be reliably sprayed in a certain amount toward the desired position on the outer surface 3a of the electric wire 3, and the desired position on the outer surface 3a of the electric wire 3 can be colored in a desired color. Thus, the colored area (the point 7 described above) can be kept in a desired area (size).

[0114] While the electric wire 3 and the coloring nozzle 31 are relatively moved along the longitudinal direction of the electric wire 3, the coloring nozzle 31 applies a certain amount of coloring material to the electric wire 3 by droplets. In this way, the wire 3 is colored during the relative movement between the wire 3 and the coloring nozzle 31. For this reason, since it is not necessary to stop the electric wire 3 in order to color the electric wire 3, work efficiency is not reduced. In addition, during the relative movement of the electric wire 3 and the coloring nozzle 31, the coloring material is sprayed by a certain amount by directing the electric wire 3, so that an arbitrary position of the electric wire 3 can be colored. Can be colored.

[0115] The encoder 17 measures the movement amount of the electric wire 3, and the control device 19 controls the coloring nozzle 31 according to the movement amount of the electric wire 3. For this reason, when the moving speed of the electric wire 3 is increased, the interval at which the coloring material is sprayed can be shortened, and when the moving speed of the electric wire 3 is decreased, the interval at which the coloring material is sprayed can be increased. Thus, even if the moving speed of the electric wire 3 changes, the interval between the coloring materials attached to the outer surface 3a of the electric wire 3 can be kept constant.

Therefore, even if the moving speed of the electric wire 3 changes, the coloring material can be attached to the outer surface 3a of the electric wire 3 according to a predetermined pattern. That is, even if the moving speed of the electric wire 3 changes, the electric wire 3 can be colored according to a predetermined pattern. In the embodiment described above, the first nozzle member 37 and the second nozzle member 50 are separate from each other. However, in the present invention, the first nozzle member 37 and the second nozzle member 50 may be integrated.

[0118] Furthermore, in the present invention, various materials such as acrylic paints, inks (dyes and pigments), and UV inks may be used as the coloring liquid and the paint.

[0119] Further, in the above-described embodiment, the wire 3 constituting the wire harness routed in the automobile is described. However, in the present invention, it is needless to say that the electric wire 3 may be used not only for automobiles but also for various electronic devices such as portable computers and various electric machines.

[0120] In the embodiment described above, the coloring nozzle 31 for coloring the outer surface 3a of the electric wire 3 is shown. However, the coloring nozzle 31 of the present invention may color various things in addition to the electric wire 3.

[0121] The above-described embodiments are merely representative examples of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

Claims

The scope of the claims

[1] In a coloring nozzle for coloring the article by spraying a certain amount of a liquid coloring material on the outer surface of the article, and attaching the liquid droplets of the coloring material to the outer surface of the article. A housing for housing the coloring material;

A pressurizing means for pressurizing the colorant in the housing portion;

Nozure which is formed in a cylindrical shape and communicates in the housing portion while the coloring material flows inside,

A valve body that is detachably provided at a base end portion located in the accommodating portion of the nozzle, and sprays the coloring material from the nozzle by coming into contact with and separating from the base end portion;

A nozzle cover that covers at least the tip of the nozzle and allows the coloring material sprayed by the nozzle force to adhere to the article;

Cleaning liquid supply means for supplying a cleaning liquid for removing the coloring material adhering to the nozzle from the nozzle in the nozzle cover,

In a state where the cleaning liquid supplied from the cleaning liquid supply means into the nozzle cover is maintained in the nozzle cover by the surface tension of the cleaning liquid, the coloring material is sprayed from the nozzles to the article by force. A coloring nozzle characterized by.

[2] The colored nozzle according to claim 1, wherein an end surface of the nozzle cover facing the article and a tip surface of the nozzle facing the article are provided on the same plane.