JP3622879B2 - Oil applicator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an oil application device for applying oil to long objects such as electric wires and cables, and in particular, it can automatically apply oil used as a release agent for shielding tape wound around the surface of electric wires and cables or conductors. The present invention relates to an oil application device.
[0002]
[Prior art]
Conventionally, when an electric wire is manufactured, for example, a heated insulator is continuously extruded and coated on a traveling conductor. And when winding a shielding tape or flame retardant tape after cooling, to prevent the tape from sticking to the insulator or scratching the insulator, for example, silicon Lubricant such as oil is applied. Alternatively, a lubricant is applied to facilitate release of the shielding tape.
[0003]
In the case of a cable, a shielding tape is wound on an insulator of one electric wire, a shielding tape is wound on a stranded wire obtained by twisting two or more electric wires, or a sheath is placed on the shielding tape. Continuous extrusion coating. After the sheath is cooled, the outermost layer of the cable is used to prevent the tape from sticking to the sheath or the sheath from being damaged when the shielding tape or flame retardant tape is wound. A lubricant such as silicon oil is applied to the surface of a certain sheath.
[0004]
Thus, when applying a lubricant to the surface of the insulator of the electric wire or the surface of the sheath of the cable, a method of applying the lubricant directly from the nozzle to the surface of the traveling electric wire or cable has been adopted.
When the lubricant is applied to the surface of the insulator of the electric wire or the surface of the sheath of the cable by such a method, the lubricant is applied thickly and unevenly on the peripheral surface of the insulator on the surface of the insulator or the sheath. There was a problem that the lubricant was consumed.
In addition, if the amount of lubricant applied to the surface of the wire insulator or the surface of the cable sheath is excessive, when the tape is wound after the lubricant is applied, the lubricant protrudes from between the tapes. As a result, there was a problem that the commercial value of the product would decrease.
[0005]
Therefore, as shown in FIG. 5, an oil application device 40 for removing unnecessary lubricant after applying the lubricant to the surface of the insulator of the electric wire or the surface of the sheath of the cable has been proposed.
[0006]
The oil application device 40 scrapes off the lubricant 42 already applied from the wire 41 that is being applied (in the direction of the arrow X) and the application part (not shown) that applies the lubricant 42 to the outer peripheral surface of the wire 41. And a take-up portion 43. Since the scraping portion 43 is easy to attach, for example, the rubber packing is divided into two parts, and a through hole 46 is formed in the approximate center of the matching portion of the two divided packing portions 44 and 45 to be attached and detached. The structure is flexible and is in close contact with the outer peripheral surface of the wire 41 to which the lubricant 42 is applied.
[0007]
And the unnecessary lubricant 42 was scraped off by letting the wire 41 coated with the lubricant 42 pass through the through hole 46 of such a rubber packing.
In addition, the above-mentioned wire 41 is an electric wire in which a conductor is covered with an insulator, a wire in which a shielding tape is wound around an insulator of one electric wire, or a twisted wire in which two or more electric wires are twisted. This is a cable in which a shielding tape is wound on and a sheath is coated thereon. For example, in the case of a cross-linked polyethylene power cable, a conductor made of stranded wire is covered with a cross-linked polyethylene insulator, and a semiconductive cloth tape, a copper shielding tape, and a marker cloth tape are collectively wound on the conductor. Is covered with a sheath.
[0008]
[Problems to be solved by the invention]
In the conventional oil application device 40 described above, when the wire 41 is passed through the through hole 46 provided at the joint of the packing portions 44 and 45 of the rubber packing and is run in the direction of the arrow X in FIG. Most of the unnecessary lubricant is scraped off.
[0009]
However, the lubricant 42 applied to the surface of the wire 41 passing through the joint portion of the packing portions 44, 45 cannot be completely scraped off, and the lubricant 42 is streaked along the length of the surface of the wire 41. There was a problem that it remained as 47.
In addition, even when the scraping portion 43 is not divided into the packing portions 44 and 45, there is a problem in that scraping unevenness (coating unevenness) occurs due to a change in the contact state of the edge of the through hole 46 with respect to the wire 41. .
[0010]
Such uneven application of the lubricant 42 is caused by sticking of these tapes or protrusion of the lubricant when a shielding tape or a flame retardant tape is wound thereon in a later process, and the separation of the shielding tape is caused. There was a problem that it became difficult and the quality of the wire 41 deteriorated.
[0011]
An object of the present invention is to provide an oil coating apparatus that can improve the quality of a wire by making the amount of oil applied to the wire uniform, preventing sticking of the tape due to uneven application of oil, and oil sticking out. is there.
[0012]
[Means for Solving the Problems]
An object of the present invention is to provide an application plate having an application hole for impregnating the oil and contacting and passing through the entire circumference of the wire, in an oil application device for uniformly applying oil to the entire outer peripheral surface of the wire. And an oil application part having a back-up plate provided in contact with the application plate on the downstream side in the wire travel direction, and a scraping hole having predetermined rigidity and allowing the wire to pass through the entire circumference. And an oil scraper having a scraper plate provided in contact with the scraper plate and a support plate that is capable of adjusting deformation of the scraper plate due to travel of the wire. It can be solved by an oil application device.
[0013]
Moreover, the said subject can be solved by the said oil application | coating apparatus with the said oil scraping part provided with two or more.
Further, the above-mentioned problem is solved by the oil coating apparatus, wherein the oil scraping section has the scraping plate and the support plate alternately and stacked. Can do.
Furthermore, the above-described problem can be solved by an oil coating apparatus, wherein the coating plate is formed of foamed urethane and the scraping plate is formed of rubber.
[0014]
According to the oil coating apparatus having the above-described configuration according to the present invention, the coating plate has a coating hole that is impregnated with oil and through which the wire rod contacts and passes over the entire circumference, and the downstream of the wire rod traveling direction in contact with the coating plate. An oil application part having a backup plate provided on the side, a scraping plate having a scraping hole through which the wire passes in contact with the entire circumference, and is provided in contact with the scraping plate . And an oil scraper having a support plate capable of adjusting deformation of the scraper plate due to traveling .
Therefore, an oil pool can be formed around the application hole of the application plate by the backup plate, and the oil impregnated around the application hole is sufficiently applied over the entire circumference of the wire passing through the application hole. Further, since the amount of deformation around the scraping hole of the scraping plate can be appropriately set by the support plate, the inner peripheral surface of the scraping hole can be brought into uniform contact with the entire peripheral surface of the wire.
[0015]
Further, when a plurality of the oil scraping portions are provided, the oil scraping amount of each oil scraping portion can be adjusted as appropriate, and the oil application amount of the wire is appropriately adjusted according to the use and characteristics of the wire. be able to.
[0016]
In addition, when the oil scraping part is arranged with the scraping plate and the support plate alternately and in a laminated form, scraping becomes more reliable, and the scraping function of each scraping plate can be adjusted flexibly. It is possible to finely adjust the scraping amount.
[0017]
Furthermore, when the coating plate is made of urethane foam and the scraping plate is made of rubber, the coating plate and the scraping plate can be easily manufactured and have elasticity as appropriate. Appropriate contact can be maintained.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of an oil application apparatus according to the present invention will be described in detail with reference to FIGS. 1 is a perspective view showing an oil application apparatus according to the present embodiment, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along line BB in FIG. It is sectional drawing explaining the effect | action of an oil scraping part.
As shown in FIG. 1, an oil application apparatus 1 according to the present embodiment is for uniformly applying oil 2 as a lubricant to an outer peripheral surface of a wire 10 such as an electric wire or a cable. And an oil application part 12 and two oil scraping parts 13 and 13.
[0019]
The wire 10 can be arbitrarily selected as long as the oil 2 is to be applied to the outer peripheral surface such as an electric wire or a cable. The oil supply unit 11 includes a pump 14 that delivers the oil 2 and a nozzle 15 that drops the oil 2 delivered from the pump 14 onto an application plate 17 of the oil application unit 12 described later.
[0020]
The oil application part 12 impregnates the oil 2 dripped from the nozzle 15 and has an application plate 17 having an application hole 16 (see FIG. 2) through which the wire 10 contacts and passes all around, and the application plate. On the other hand, it has a backup plate 18 arranged so as to be in contact with the downstream side in the conveying direction of the wire 10.
The coating plate 17 is made of a material that can be impregnated with oil 2 such as urethane foam, and is formed in a plate shape having an appropriate thickness. In the case of urethane foam, those having a pore diameter of 10 to 100 μm can be used.
[0021]
The backup plate 18 is made of a material having an appropriate rigidity, for example, a nitrile rubber having a hardness of JIS A 50 ° to 80 ° formed into a plate shape. And the backup board 18 is stuck on the plate | board surface of the tip side of the wire travel direction X of the application board 17, and is affixed.
[0022]
As shown in FIG. 2, an application hole 16 through which the wire 10 contacts and passes is provided in the center of the application plate 17. The coating hole 16 is smaller than the diameter D of the wire 10 by a predetermined dimension. A through-hole 21 having a diameter D1 that is concentric with the coating hole 16 and is equal to the diameter D of the wire 10 or slightly larger than the diameter D is provided at the center of the backup plate 18.
[0023]
Further, as shown in FIG. 1, the oil scraping portion 13 has a predetermined rigidity and a scraping plate 26 having a scraping hole 25 through which the wire 10 contacts and passes over the entire circumference, and the travel of the wire 10. And a support plate 27 that supports the deformation amount h (see FIG. 4) of the peripheral portion of the scraping hole 25 in an adjustable manner.
The scraper plate 26 is formed in a plate shape with a material having a predetermined hardness such as a nitrile rubber having a hardness of JIS A 50 ° to 80 °. Further, as shown in FIG. 3, the diameter D <b> 2 of the scraping hole 25 is 1 to 10 mm smaller than the diameter D of the wire 10.
[0024]
Further, the support plate 27 is formed in a plate shape with a highly rigid material, and a through hole 28 having a diameter D3 larger than the diameter D of the wire 10 by a predetermined dimension is provided concentrically with the scraping hole 25 at the center thereof. It has been. In the present embodiment, the diameter D3 is set to be about 3 to 10 mm larger than the diameter D, three scraping plates 26 and two support plates 27 are used, and these are arranged alternately and in a laminated form. Yes. Therefore, the amount of oil applied to the wire can be arbitrarily changed by changing the diameter D2 of the scraping hole 25 and the diameter D3 of the through hole 28.
[0025]
Next, the operation of the above-described oil application device 1 of the present embodiment will be described.
As shown in FIG. 1, when oil 2 is applied to the outer peripheral surface of the wire rod 10, when the pump 14 of the oil supply unit 11 is driven to drop the oil 2 from the nozzle 15, the dropped oil 2 is added to the oil application unit. It impregnates from the top surface of the 12 coating plates 17 and gradually flows down inside the coating plate 17.
[0026]
Then, when the wire 10 is run in the X direction through the application hole 16 with the oil 2 sufficiently impregnated on the inner peripheral surface of the application hole 16 and in the vicinity thereof as shown in FIG. Since the outer peripheral surface of the wire 10 is in contact with the peripheral surface almost uniformly, the oil 2 is applied to the outer peripheral surface of the wire 10.
Further, when the wire 10 is caused to travel in a state where the oil 2 is dropped, a so-called oil reservoir is formed in which the oil 2 accumulates on the downstream side in the X direction by the backup plate 18 around the application hole 16. Accordingly, since the oil 2 is accumulated in the portion of the application hole 16 near the backup plate 18, the accumulated oil 2 is sufficiently applied to the outer peripheral surface of the wire 10.
[0027]
The oil 2 applied to the wire 10 by the oil application unit 12 is uniformly scraped off by the next oil scraping unit 13.
As shown in FIG. 4, when the wire rod 10 passes through the scraping hole 25 of the scraping plate 26, the oil scraping portion 13 is pulled by the wire rod 10 so that the portion in contact with the wire rod 10 is in the traveling direction side of the wire rod 10. Deforms to protrude. At this time, since most of the scraping plate 26 is supported by the support plate 27, a strong contact force with respect to the wire 10 can be maintained.
Furthermore, since the scraping plate 26 can be deformed only in the portion located inside the through hole 28 of the support plate 27, the scraping plate 26 can be set by appropriately setting the size of the diameter D3 of the through hole 28. The deformation amount h of 26 can be adjusted as appropriate.
[0028]
In this way, since the deformation amount h of the scraping plate 26 can be adjusted, the contact strength between the wire 10 and the scraping hole 25 can be adjusted. For example, when processing a wire having a different surface roughness or thickness, By setting an oil scraper corresponding to a specific wire, it is possible to deal with a very wide range of wire processing.
[0029]
In the present embodiment, since two oil scraping portions 13 are arranged, the oil 2 applied to the wire 10 is scraped off by the first oil scraping portion 13 and then the next oil scraping portion. The oil 2 is scraped off again at the removing portion 13. As described above, by providing a plurality of oil scraping portions 13, the application state of the oil 2 can be adjusted according to the use and characteristics of the wire 10.
Further, in the present embodiment, each oil scraping portion 13 has three scraping plates 26, so that the thickness of each scraping plate 26 and the diameter D2 of the scraping hole 25 can be appropriately changed. The application state of the oil 2 can be arbitrarily adjusted.
[0030]
As described above, the oil application device 1 according to the present embodiment can uniformly apply the oil 2 to the outer peripheral surface of the wire 10, and therefore, when a shielding tape or a flame retardant tape is wound around the oil 2 in a later process. Further, it is possible to reliably prevent the sticking of the tape and the oil from protruding. Therefore, it becomes easy to release the shielding tape, and it is possible to prevent the quality of the wire 10 from deteriorating.
[0031]
【The invention's effect】
As described above, according to the oil coating apparatus according to the present invention, the coating plate has a coating hole that is impregnated with oil and has a coating hole through which the wire rod contacts and passes over the entire circumference, and the wire rod traveling direction in contact with the coating plate. of the oil coating unit and a backup plate provided on the downstream side, a wire and a scraping plate having a scraping hole passing in contact over the entire circumference, is provided in contact with該掻come up plate, wire And an oil scraper having a support plate capable of adjusting the deformation of the scraper plate due to the travel of the motor .
Therefore, an oil pool can be formed around the application hole of the application plate by the backup plate, so that the oil impregnated around the application hole is uniformly and sufficiently applied over the entire circumference of the wire passing through the application hole. In addition, the amount of deformation around the scraping hole of the scraping plate can be appropriately set by the support plate, and the inner peripheral surface of the scraping hole can be uniformly contacted with the entire peripheral surface of the wire. Can be reliably prevented.
Therefore, when the shielding tape or flame retardant tape is wrapped around the wire rod after the oil is applied, it is possible to reliably prevent the tape from sticking or the oil from protruding, and the shielding tape can be separated. It becomes easy and it can prevent that the quality of a wire falls.
[0032]
Also, since there are multiple oil scraping sections, the amount of oil scraping of each oil scraping section can be adjusted as appropriate, and the amount of oil applied to the wire can be easily adjusted according to the application and characteristics of the wire. can do.
Further, since the oil scraping portion is arranged alternately and in layers with the scraping plate and the support plate, the scraping becomes more reliable, and the scraping function of each scraping plate can be adjusted flexibly. It is possible to finely adjust the scraping amount.
Furthermore, since the coating plate is made of urethane foam and the scraping plate is made of rubber, the coating plate and the scraping plate can be easily manufactured and have elasticity as appropriate. Appropriate contact can be maintained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an oil application apparatus according to the present invention.
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
3 is a cross-sectional view taken along the line BB in FIG.
FIG. 4 is a cross-sectional view for explaining the operation of an oil scraping portion of the oil application device according to the present invention.
FIG. 5 is a perspective view showing an oil scraping portion of an oil coating apparatus according to a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Oil coating apparatus 2 Oil 10 Wire material 12 Oil application part 13 Scraping part 17 Coating plate 18 Backup board 25 Scraping hole 26 Scraping board 27 Support plate D Diameter of wire rod D1 Through-hole diameter D2 of backup board Scraping of scraping board Hole diameter D3 Through hole diameter h of support plate Deformation amount of scraping plate

Claims (4)

In an oil application apparatus for uniformly applying oil to the entire outer peripheral surface of a wire, an application plate having an application hole that impregnates the oil and passes through the wire in contact with the entire periphery is in contact with the application plate. An oil application part having a backup plate provided on the downstream side in the wire travel direction, a scraping plate having a predetermined rigidity and a scraping hole through which the wire is in contact with the entire circumference; and An oil application apparatus comprising: an oil scraping unit provided in contact with the scraping plate and having a support plate capable of adjusting deformation of the scraping plate due to travel of the wire . The oil coating apparatus according to claim 1, wherein a plurality of the oil scraping portions are provided. The oil coating apparatus according to claim 1 or 2, wherein the oil scraping section is configured such that the scraping plate and the support plate are alternately and stacked. The oil coating apparatus according to any one of claims 1 to 3, wherein the coating plate is formed of urethane foam , and the scraping plate is formed of rubber.

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