JP2974234B2 - Conductor surface chemical solution application device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductor surface treating apparatus for applying a treating solution to the surface of a cable conductor to perform a surface treatment, and more particularly, to fill a treating solution into a groove-shaped member having a V-shaped cross section. The present invention relates to an apparatus for applying a coating to a surface of a cable conductor in a state.

[0002]

2. Description of the Related Art When manufacturing a cable having an insulation coating, a cable conductor is formed by twisting a plurality of conductor wires made of copper or a copper alloy, and the surface of the cable conductor is made of vinyl, polyethylene, or rubber. And the like. However, there is a problem that the surface of the cable conductor is oxidized and an oxide film is formed before the cable conductor is molded and the insulation coating is performed. The corrosion causes stress corrosion cracking, which causes a problem that the cable conductor is disconnected. Therefore, conventionally, immediately after manufacturing a cable conductor, a process of forming an oxidation preventing film on the surface thereof has been performed. For example, Japanese Patent Publication No. 44-289
As described in Japanese Patent Application Publication No. 72-72, etc., it is known to perform rust-prevention and rust-prevention treatment on the surface of a cable conductor. It is applied by such means as surface treatment.

In addition to the above conventional example, Japanese Patent Application Laid-Open No.
As shown in JP 77120 and the like, it is known to apply a benzotriazole derivative liquid (BT) to the surface of a cable conductor to perform a surface treatment of the cable conductor. When using means for applying a treatment liquid such as BT to the surface of the cable conductor, a very thin film such as BT can be formed on the surface of the cable conductor to prevent oxidation of the copper alloy. The BT is used more frequently than before because the BT has a property that it is easily volatilized by the heat and does not remain in the cable when performing a process of applying an insulating coating to the surface of the cable conductor of the cable. ing.

As means for applying the BT liquid to the surface of a cable conductor, for example, a conductor surface treatment apparatus as shown in FIGS. 6 to 8 is used. In the conductor surface treatment apparatus 5a shown in FIG. 6, a coating felt member 30 having a hole through which the cable conductor 1 passes is provided inside the coating tank apparatus 10, and the coating felt member 30 is treated. An application nozzle 21 for supplying a liquid is arranged. When passing the cable conductor 1 through the felt member for application in the direction of the arrow X at a predetermined speed, the treatment liquid can be applied to the surface of the cable conductor from the felt member for application containing the treatment liquid. The conductor surface treatment device 5b shown in FIG.
It is intended for a relatively soft cable conductor. The inside of the coating tank device 10 is filled with the treatment liquid 20, and the coating liquid is bent by both sides of the coating tank device 10 and guide rollers 31 to 33 disposed inside. Thus, a mechanism for treating the surface of the cable conductor by passing through the treatment liquid in the direction of the arrow X is configured. Further, in the conductor surface treatment apparatus 5c shown in FIG. 8, the coating nozzle 2
1, the surface treatment of the cable conductor 1 can be performed by ejecting the treatment liquid directly to the surface of the cable conductor 1. Then, after manufacturing the cable conductor, the BT as described above is used.
By performing a surface treatment of the cable conductor using a means for applying a liquid, it is possible to prevent an oxide film or the like from being formed.

[0005]

However, the above-mentioned FIGS.
When a conductor surface treatment apparatus as shown in Fig. 8 is used, there is a problem in the performance of applying the BT solution to the cable conductor, and in some cases, the protective film cannot be formed in a good state on the surface of the cable conductor. is there. For example, as shown in FIG. 6, in an apparatus for applying a BT liquid by passing through a felt member for application, when the cable conductor passes through a hole provided in the felt member for application, the BT liquid may be used. There is a problem that dirt and the like adhering to the surface are transferred to the surface of the felt member for application, and the felt member for application is soiled. When the BT liquid contained in the application felt member is applied to the cable conductor, a layer of the BT liquid may not be formed uniformly, and the holding amount of the BT liquid may be constant inside the application felt member. If not, there is a problem that coating unevenness occurs and the BT concentration in the felt portion increases.

Further, as shown in FIG. 7, the means for passing the cable conductor through the treatment liquid filled in the coating tank apparatus can be applied only to a relatively soft cable conductor. Yes, for relatively rigid cable conductors,
The cable conductor cannot be sufficiently immersed in the treatment liquid. In addition to the above problems, B
When the T liquid is applied to the surface of the cable conductor and then brought into contact with the guide roller, the applied state of the BT liquid may be uneven. Further, in the case of using the application means as shown in FIG. 8, unless the amount of the processing liquid ejected from the application nozzle is set very strictly, application unevenness is likely to occur, and the coating on the surface of the cable conductor will not be formed. A problem is likely to occur in the formation.

[0007]

The object of the present invention is to solve the above-mentioned problems of the conventional conductor surface treatment apparatus. In addition to simplifying the structure of the conductor surface treatment apparatus, the present invention also discloses a method of placing a cable conductor in a treatment liquid. It is an object of the present invention to provide a conductor surface chemical liquid coating device which can adjust the passage time and does not leave an excessive treatment liquid on the surface of a cable conductor sent out from a coating tank device.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a chemical solution for preventing the conductor from being oxidized on the surface of the conductor before applying the insulating coating when manufacturing a cable constituted by applying an insulating coating on the surface of the conductor. And a coating tank device for applying the chemical solution, and a processing surface is circulated through the processing liquid to squirt from a coating nozzle onto the surface of the cable conductor to apply the processing liquid to the surface of the cable conductor. About. In the present invention, a guide member for application is arranged for guiding the conductor, and a V provided on the guide member for application is provided.
Means for guiding the cable conductor to the groove-shaped member having a U-shaped cross section,
An application nozzle for supplying a processing liquid to the groove-shaped member is provided, and an application nozzle for ejecting the processing liquid in a direction opposite to a moving direction of the cable conductor is arranged and configured on the groove-shaped member. ing.

In the present invention, the groove-shaped member having a V-shaped cross section provided on the coating guide member is supported on a support member provided on the coating tank device so as to be detachable and movable, and the moving direction of the cable conductor. Can be configured to be variable. Furthermore, in the present invention, it is possible to arrange an air nozzle at the end of the cable conductor sending-out side of the coating tank device and to configure a means for blowing back the processing liquid attached to the cable conductor toward the coating tank device. In addition to the above configuration, it is also possible to provide a means for arranging a cover member on the upper portion of the coating tank device and guiding the cable conductor through a guide groove provided in a side plate of the coating tank device.

[0010]

As described above, a conductor surface treatment device for performing surface treatment of a cable conductor is configured by combining a groove-shaped member disposed inside a coating tank device and a coating nozzle for jetting a processing liquid. Thereby, the configuration of the conductor surface treatment apparatus can be simplified. Further, by using means for ejecting the processing liquid in a direction opposite to the moving direction of the cable conductor inside the groove member, the processing liquid is grooved by a synergistic action between the moving direction of the cable conductor and the ejecting direction of the processing liquid. The effect of filling the groove of the shaped member can be exerted, and the time for immersing the cable conductor in the treatment liquid to perform the surface treatment can be set longer. Further, by arranging the air nozzle on a portion where the cable conductor is exposed from the coating tank device, the processing liquid excessively attached to the cable conductor can be returned toward the coating tank device, so that the working environment is improved. It can be maintained in a state, and unnecessary consumption of the processing liquid can be prevented. When a cover member is provided for the coating tank device, it is possible to prevent the volatile components of the processing liquid from affecting the working environment, and to ensure the safety of the device.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The conductor surface treatment apparatus 5 shown in FIG. 1 constitutes a mechanism for applying a treatment liquid during passage of the cable conductor 1, and moves the cable conductor 1 in the direction of an arrow X in an application tank apparatus 10. The cable conductor can be immersed in the treatment liquid that is passed through and ejected from the application nozzle 21, and the treatment liquid can be applied to the surface of the cable conductor. As the treatment liquid applied to the surface of the cable conductor, as shown in the conventional example, in addition to using the BT liquid, silicon oil and other chemicals capable of forming a film on the surface are used. However, in the present invention, a case where a BT solution is used will be described.

In the conductor surface treatment apparatus 5 of the present invention, a coating guide member 15 is provided inside the coating tank apparatus 10 for guiding the cable conductor and applying a treatment liquid to the cable conductor. , The application guide member 1
A means for ejecting the processing liquid from the application nozzle 21 to 5 and passing the cable conductor into the processing liquid is constituted. In the lower part of the coating tank device 10, the processing liquid is collected and collected in the liquid tank 2.
2 is provided, the processing liquid overflowing from the groove-shaped member of the application guide member 15 is returned to the liquid tank 22, and the pipe line 24 from the pump 23 is connected to the application nozzle 21, and By adjusting the opening of the valve provided on the nozzle,
The application amount of the processing liquid can be adjusted. An air nozzle 25 is arranged on the side of the side where the cable conductor is pulled out from the coating tank device.
The compressed air supplied from 6 is jetted from the air nozzle 25 toward the cable conductor, so that the processing liquid excessively attached to the cable conductor can be returned to the inside of the coating tank device. Further, a cover member 14 is attached to the upper part of the coating tank device to prevent the processing liquid from leaking outside and prevent the volatile components of the processing liquid from affecting the working environment. I can do it.

In the conductor surface treating apparatus 5 of the present invention configured as described above, the coating guide member 15 disposed inside the coating tank apparatus 10 has a substantially V-shaped support member as shown in FIG. 16 is provided fixed to the bottom plate of the coating tank apparatus, and each member such as a groove-like member described later is made of stainless steel or the like so as not to be affected by the processing liquid. Also, on the support member 16, V
The groove-shaped member 18 having a U-shaped cross section is supported, and the length of the groove-shaped member 18 is set according to the moving speed of the cable conductor and the time for immersing the cable conductor in the treatment liquid. That is, the length of the groove-like member 18 is set to an arbitrary length on the support member 16 according to conditions such as the moving speed of the cable conductor and the time required for surface treatment. It can be configured, depending on the size of the cable conductor and other conditions, arrange a groove-shaped member of any length,
A processing device can be configured.

When the cable conductor 1 is guided with respect to the groove member 18, the cable conductor is slid on the plate member of the groove member, or a state where the cable conductor is provided with a very small gap so as not to contact the groove member. Use the means to guide. If the cable conductor is made of a hard material, sliding the cable conductor into the grooved member will not damage the surface of the cable conductor, so guide the cable conductor in a sliding state. Is also possible.

Further, as shown in FIG. 3, a coating nozzle 21 for supplying the processing liquid to the groove-like member 18 is provided at a predetermined position on the downstream side of the groove-like member 18 on the cable conductor moving side. The ejection direction of the processing liquid supplied from the coating nozzle 21 is set so as to be opposed to the moving direction of the cable conductor. The angle θ at which the treatment liquid is ejected from the coating nozzle 21 is 10 ° to 80 °.
°, preferably 30 ° to 60 °, and the angle θ is set according to the moving speed of the cable conductor 1. When the angle of the coating nozzle is 20 ° or less,
It is necessary to increase the ejection amount of the processing liquid, and the setting of the nozzle becomes troublesome. On the other hand, when the angle of the nozzle is set to 80 ° or more, the processing liquid easily flows in the moving direction of the cable conductor, and there is a problem that the processing liquid jet output must be increased accordingly, which is not preferable.

Then, as in the example shown in FIG.
By setting the angle θ of the coating nozzle to a predetermined angle and using a means for supplying the processing liquid 20 from the coating nozzle 21 toward the cable conductor 1, the processing liquid contacts the cable conductor and is transported downstream. And the application nozzle 21
The processing liquid 20 is accumulated in the groove-shaped member depending on the speed at which the processing liquid is ejected from the substrate. Therefore, the cable conductor 1 can be attached to the surface of the cable conductor in a state where the time for immersing the cable conductor 1 in the treatment liquid 20 is extended, and most of the overflowing treatment liquid is transferred upstream in the moving direction of the cable conductor. The processing liquid is discharged from the side toward the bottom of the coating tank apparatus, and a small amount of the processing liquid is dropped from the downstream part. In the groove-shaped member, the groove for guiding the cable conductor is set to be substantially horizontal, but it is also possible to provide the groove-shaped member inclined in the upstream and downstream directions according to the state of the processing liquid in the groove. is there.

Further, as shown in FIG. 2, the side plate 11 of the coating tank device 10 is provided for guiding the cable conductor in correspondence with the coating guide member 15 for coating the cable conductor with the treatment liquid. Guide groove 12 is provided. Then, the air nozzle 25 shown in FIG.
2 and the air is blown from the lower part of the cable conductor, so that excess processing liquid adhering to the lower part of the cable conductor is blown back toward the inside of the coating tank device by air. Ensure that the processing liquid does not scatter outside the equipment. Further, as shown in FIG. 4, in the coating tank device 10 of the present invention, a jack device 13 is provided at the lower part of the device, and the height of the cable conductor is adjusted with respect to the coating guide member 15 provided in the coating tank device. Is arbitrarily adjusted.

Jack device 1 for supporting the coating tank device
Reference numeral 3 denotes an up-and-down moving mechanism having an arbitrary configuration, which enables adjustment of the relationship between the groove member and the cable conductor in accordance with the size of the cable conductor and other conditions. When using the height adjusting means for the coating tank device, first set the position of a pulley or the like for guiding the cable conductor to the conductor surface treatment device, and determine the position to move the cable conductor with respect to the conductor surface treatment device. Thereafter, the application tank device is raised to define the position of the cable conductor with respect to the groove-shaped member. Therefore, in the conductor surface treatment apparatus, an optimal state for immersing the cable conductor in the treatment liquid is set according to the size and other conditions of the cable conductor, so as to cope with the work of the surface treatment of the cable conductor. Can be.

In addition to the supply of the processing liquid, in the present invention, as shown in FIG. 5, in order to prevent the processing liquid excessively attached to the cable conductor from scattering outside the machine,
An air nozzle 25 is arranged outside the side plate 11 of the coating tank device. The air nozzle 25 performs a function of spraying air and returning the treatment liquid carried out toward the outside of the coating tank device to the inside of the coating tank device while being attached to the lower portion of the cable conductor in a water droplet shape. The arrangement angle of the air nozzle with respect to the cable conductor is appropriately set, and the direction of the air blown from the air nozzle can be arbitrarily adjusted. Then, by adjusting the ejection angle of the air blown from the air nozzle 25 and the amount of compressed air by a valve or the like, the air is returned from the guide groove provided in the side plate of the coating tank device to the inside, thereby preventing wasteful consumption of the processing liquid. At the same time, it is possible to prevent the treatment liquid from leaking out of the coating tank device.

It is necessary to prevent the air blown from the air nozzle 25 from being strongly blown into the inside of the coating tank apparatus. It is necessary that the air be blown directly so as not to affect the dipping action of the cable conductor. When a BT solution is used as the treatment liquid used in the present invention, for example, an organic solvent is used to dilute the BT solution. This can have a significant effect.

Furthermore, in the conventional coating tank device 10, the cover is not provided on the upper portion, but in the present invention, a cover member is provided on the coating tank device 10, Since the cable conductor is passed through the guide groove provided on the side plate of the coating tank device, it is possible to prevent the treatment liquid from leaking out of the device. Further, when the cover member is provided, in order to monitor the working state inside the coating tank device, it may be configured as a member provided with a glass window in part, or may be configured entirely of a transparent material. Thus, it can be configured to be able to open and close with respect to the coating tank device. However, depending on the type of treatment liquid applied to the surface of the cable conductor, it is assumed that the treatment liquid will evaporate and adhere to the inside of the cover, so it may be difficult to configure the cover with a plastic material. In addition, it is necessary to have a structure that can easily clean the inner surface of the cover.

As described above, in the conductor surface chemical liquid coating apparatus of the present invention, means for adjusting the height of the entire coating tank apparatus is provided, and the length of the treatment liquid acting on the cable conductor can be arbitrarily set. A conductor surface treatment apparatus can be configured by combining means that can be adjusted, means for returning excess treatment liquid attached to the cable conductor to the inside of the apparatus, and the like. Then, a treatment film is formed on the surface of the cable conductor using the BT solution or the like, so that a copper oxide film can be prevented from being formed on the surface of the cable conductor, and the film formed on the surface of the cable conductor can be prevented. Can be volatilized by heat at the time of coating the insulator so that the treatment liquid does not remain inside the cable. Also,
In the conductor surface treatment apparatus of the present invention, any treatment liquid other than the BT liquid can be used as the treatment liquid applied to the surface of the cable conductor, and the length of the groove member, the shape of the groove, It is possible to arbitrarily adjust the amount of the processing liquid applied to the surface of the cable conductor by appropriately setting conditions such as the inclination angle of the nozzle for use and the amount of the processing liquid ejected.

[0023]

According to the present invention, since the conductor surface chemical coating device of the present invention is constructed as described above, the conductor surface treatment device for performing the surface treatment of the cable conductor is provided in the groove for disposing the conductor surface treatment device inside the coating tank device. The configuration of the conductor surface treatment apparatus can be simplified by combining and forming the shape member and the application nozzle for ejecting the processing liquid. Further, by using means for ejecting the processing liquid in a direction opposite to the moving direction of the cable conductor inside the groove member, the processing liquid is grooved by a synergistic action between the moving direction of the cable conductor and the ejecting direction of the processing liquid. The effect of filling the groove of the shaped member can be exerted, the time for performing the surface treatment by immersing the cable conductor in the treatment liquid can be set long, and the concentration of the treatment liquid can be kept constant. Therefore, according to the device of the present invention, it is possible to form a stable antioxidant film on the surface of the cable conductor. Further, by arranging the air nozzle on a portion where the cable conductor is exposed from the coating tank device, the processing liquid excessively attached to the cable conductor can be returned toward the coating tank device, so that the working environment is improved. It can be maintained in a state, and unnecessary consumption of the processing liquid can be prevented. When a cover member is provided for the coating tank device, it is possible to prevent the volatile components of the processing liquid from affecting the working environment, and to ensure the safety of the device.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a configuration of a conductor surface treatment apparatus of the present invention.

FIG. 2 is a perspective view showing a configuration of a coating guide member of the present invention.

FIG. 3 is an explanatory diagram showing a relationship in which a treatment liquid in a groove member comes into contact with a cable conductor.

FIG. 4 is an explanatory view of a mechanism for moving a coating tank device up and down by a jack device.

FIG. 5 is an explanatory diagram of an air nozzle arranged with respect to a coating tank device.

FIG. 6 is an explanatory view of a conventional conductor surface treatment apparatus.

FIG. 7 is an explanatory view of another conventional example of a conductor surface treatment apparatus.

FIG. 8 is an explanatory view of another conventional example of a conductor surface treatment apparatus.

[Explanation of symbols]

1 cable conductor, 5 conductor surface treatment device, 1
0 coating tank device, 11 side plate, 12 guide groove, 13 jack device, 14 cover member,
15 Guide member for coating, 18 Groove member, 20
Treatment liquid, 21 application nozzle, 22 liquid tank,
25 Air nozzle, 30 Felt member for coating.

Claims (4)

(57) [Claims] When manufacturing a cable constituted by applying an insulating coating to the surface of a conductor, a chemical solution for preventing oxidation of the conductor is applied to the surface of the conductor before applying the insulating coating, and In a conductor surface treatment device for providing a coating tank device for coating, spraying a treatment liquid on the surface of the cable conductor from a coating nozzle while circulating the treatment liquid, and applying the treatment liquid to the surface of the cable conductor, for guiding the conductor Means for guiding a cable conductor to a groove-shaped member having a V-shaped cross section provided on the coating guide member, and a coating nozzle for supplying a processing liquid to the groove-shaped member. A conductor surface chemical liquid coating device, wherein a coating nozzle for jetting a processing liquid in a direction opposite to a moving direction of the cable conductor is disposed on the groove-shaped member. 2. A groove-shaped member having a V-shaped cross section provided on the coating guide member is supported on a supporting member provided on the coating tank device so as to be detachable and movable, and has a length in the moving direction of the cable conductor. The chemical | medical solution application apparatus of the conductor surface of Claim 1 comprised so that change is possible. 3. An apparatus according to claim 1, wherein an air nozzle is arranged at an end of the coating tank device on a cable conductor sending-out side, and means for blowing back the treatment liquid attached to the cable conductor toward the coating tank device. 3. The conductor surface chemical liquid coating device according to 1 or 2. 4. The chemical solution for a conductor surface according to claim 1, wherein a cover member is disposed above the coating tank device, and the cable conductor is guided through a guide groove provided in a side plate of the coating tank device. Coating device.