JP4034070B2 - Oil applicator for steel wire - Google Patents

Description

【表２】

表１から明らかなように、従来のＶプーリーを用いたオイル塗布装置では、オイル滴下量を多く（同図の垂れ流し状態）すると、ワイヤへのオイル付着量が極端に低下するが、本発明によるプーリーを用いた実施例１，２では、オイル滴下量を多くしても、オイル付着量は低下せず、オイル付着量のバラツキσも従来例より小さいことから、オイル滴下量を増加させた場合でも、スチールワイヤの表面に所定量のオイルを安定して塗布することができることが確認された。
また、溝底幅ＰＷを狭くした比較例１ではワイヤへのオイル付着量が低下してしまい、付着量のバラツキσも従来例と同程度で、溝底幅ＰＷを広くした比較例２ではワイヤへのオイル付着量の低下は少ないものの、付着量のバラツキσは従来例よりも大きくなった。
【００１３】
【発明の効果】
以上説明したように、本発明によれば、Ｖ字状の溝部を備えたプーリー上にオイルを滴下して、上記プーリーの溝部を線速６００〜１２００ｍ／ｍｉｎで通過するスチールワイヤにオイルを塗布するオイル塗布装置において、上記プーリーの溝部の溝底幅を上記スチールワイヤの径の２倍以上１０倍以下に形成したので、オイル滴下量を増加させた場合でも、スチールワイヤ表面に所定量のオイルを安定して塗布することができ、スチールワイヤの巻き出しテンションを安定化させることができる。
【図面の簡単な説明】
【図１】 本実施の形態に係るスチールワイヤ用オイル塗布装置の構成を示す図である。
【図２】 本発明によるスチールワイヤ用オイル塗布装置の他の構成を示す図である。
【図３】 従来のオイル塗布装置の構成を示す図である。
【符号の説明】
１ スチールワイヤ、２ オイル、１０，１０Ａ スチールワイヤ用オイル塗布装置、１１ プーリー、１１ａ 溝部、１１ｚ 溝底部、１２，１２Ａ オイル滴下装置、１３ オイルボックス、１３ａ オイルボックスの開口部、１４ オイル排出部、１５ オイル溜り、１６ オイルタンク、１７ ホース、１８ 羽根付き円盤、１８ｋ 羽根部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an oil applicator for steel wire for applying oil to the surface of a drawn steel wire.
[0002]
[Prior art]
Steel cords for reinforcing rubber articles used in steel radial tires for vehicles are usually made by drawing a strand made of high carbon steel to the desired wire diameter by wet drawing and then twisting a plurality of wires. Produced.
By the way, in the step of twisting each strand after the wire drawing step, it passes through a plurality of guides until the drawn steel wire is unwound and twisted, but the wire is rubbed in this guide portion. If the wire slips badly, the resistance increases, and the tension level of each wire at the twisting point varies, which is not twisted to the intended setting and structure of the steel cord, causing a defect.
[0003]
Therefore, in order to stabilize the unwinding tension of the wire, oil is applied to the surface of the steel wire that has been drawn to improve the slip of the wire.
Conventionally, as an oil application device used in a wet wire drawing process, for example, as shown in FIG. 3, above a pulley (hereinafter referred to as a V pulley) 51 having a V groove 51V through which a steel wire 1 to be wound passes. An oil dropping device 52 is provided, and the oil 2 supplied from the oil supply device 52P is dropped onto the V pulley 51 to attach the oil 2 to the surface of the wire 1. In this oil applicator 50, the amount of oil 2 attached to the wire 1 can be freely adjusted by controlling the amount of oil dripping from the oil dripping device 52. Can get to.
[0004]
[Problems to be solved by the invention]
However, in the case where the conventional oil application device 50 is used to increase the oil adhesion amount, if the oil dripping amount is increased, the dropped oil 2 becomes a lump on the V pulley 51 and the V pulley 51 is increased. It scatters vigorously outside. For this reason, the amount of oil adhering to the steel wire 1 is extremely reduced, causing a slip failure in a stranded wire process, which is a subsequent process, and causing a twist disturbance.
[0005]
The present invention has been made to solve the above-described problem, and even when the amount of oil dripping is increased, an oil application device for steel wire that can stably apply a predetermined amount of oil to the surface of the steel wire. The purpose is to provide.
[0006]
[Means for Solving the Problems]
As a result of intensive studies, the present inventor, in an oil application device that drops oil onto a V pulley, when a large amount of oil is dropped, the dropped oil is clumped and scattered outside the V pulley. This is because the centrifugal force acting on the oil is small at the bottom of the groove, but the amount of oil is small and the adhesive force to the V-groove is weak, so the pulley end (the uppermost end of the groove) on which the large centrifugal force acts is used. Because it is dragged together and scattered, if the groove bottom is flattened and the amount of oil at the groove bottom is increased, the dropped oil can be easily held at the groove bottom, and the oil scattering can be suppressed. The inventors have found what can be done and have arrived at the present invention.
That is, the invention described in claim 1 includes a pulley having a V-shaped groove and a dropping device that drops oil on the pulley, and passes through the groove of the pulley at a linear speed of 600 to 1200 m / min. In the steel wire oil application device for applying oil to the steel wire, the groove bottom width of the pulley groove is set to be not less than 2 times and not more than 10 times the diameter of the steel wire. Even when the oil dripping amount is increased, a predetermined amount of oil can be stably applied to the surface of the steel wire .
[0007]
According to a second aspect of the invention, a steel wire for oil application apparatus according to claim 1, oil dripping with an oil box having an opening at the top, and an oil discharge passage communicating with the oil box A device with a device disposed above the pulley, an oil reservoir is installed below the pulley, and a tip of the pulley extends to the inside of the oil reservoir. On the pulley, the oil in the oil box is dropped from the oil discharge path to supply oil to the steel wire surface, and the blade portion of the bladed disk that rotates in conjunction with the pulley, The oil in the oil pool is bounced up to the vicinity of the opening of the oil box to collect a part of the dropped oil. It is.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 (a) and 1 (b) are diagrams showing the configuration of a steel wire oil coating apparatus 10 according to an embodiment of the present invention. In FIG. A pulley 12 formed with a groove 11a through which the oil passes is disposed above the pulley 11 and is an oil dropping device that drops the oil 2 supplied from the oil supply device 12P onto the pulley 11.
This oil application device 10 is installed at a predetermined position until the steel wire 1 is taken out by the winding device of the wire twisting machine after the final drawing die of the wire drawing process is taken out. The pulley 11 is set in contact with the steel wire 1 by a predetermined angle or more so that the pulley 11 is rotated by a frictional force with the steel wire 1.
In this example, the groove 11a of the pulley is not a conventional V-groove but a diameter d of the steel wire 1 so that the oil is held in the groove 11a until the oil is dropped and comes into contact with the steel wire 1. A groove bottom portion 11z having a wider groove bottom width PW is provided to stabilize the amount of oil adhering to the steel wire 1. Therefore, since the oil 2 dripped from the oil dripping device 12 is sufficiently held by the groove bottom portion 11z, a predetermined amount of oil is stably applied to the surface of the steel wire 1 even when the oil dripping amount is increased. be able to.
[0009]
The size of the groove bottom width PW of the groove portion 11a is preferably within a range represented by the following equation, where d is the diameter of the steel wire 1.
d × 2 ≦ PW ≦ d × 10
When the groove bottom width PW of the pulley is as narrow as less than twice the diameter d of the steel wire 1, the oil 2 can be sufficiently held in the groove bottom portion 11z until the oil 2 is dripped and contacts the steel wire 1. The oil 2 is scattered by centrifugal force. Further, when the groove bottom width PW exceeds 10 times the diameter d of the steel wire 1, the remaining scattered oil accumulates in the groove bottom part 11z of the groove part 11a, but the area of the groove bottom is too large and the oil 2 becomes uneven. Since they are scattered, not only the amount of oil adhered to the steel wire 1 is reduced, but also the variation in the amount of adhesion is increased.
If the pulley groove bottom width is in the above range, even if a large amount of oil is dripped, the oil can be uniformly held at the groove bottom until the oil contacts the steel wire, and the surface of the wire is placed. A certain amount of oil can be stably applied. Moreover, even if the amount of oil to be dripped is small, the oil can be applied more stably than a conventional V pulley.
[0010]
As described above, according to the present embodiment, the groove bottom width PW is defined as d and the diameter of the steel wire 1 is d as a pulley used in a steel wire oil application device that drops oil on a pulley having a groove. In this case, since the pulley 11 having the groove 11a having a width in the range represented by the formula: d × 2 ≦ PW ≦ d × 10 is used, the steel wire 1 can be used even when the oil dripping amount is increased. A predetermined amount of oil can be stably applied to the surface of the steel wire, and the unwinding tension of the steel wire 1 can be stabilized.
[0011]
In the above embodiment, the oil dropping device 12 is one that supplies a predetermined amount of oil 2 from the oil supply device 12P. Instead, as shown in FIG. An oil dripping device 12A having an oil box 13 having 13a and an oil discharge passage 14 communicating with the oil box 13 is disposed above the pulley 11, and a hose 17 from the oil tank 16 is disposed below the pulley 11. An oil reservoir 15 in which the oil 2 supplied through the housing is installed, and a bladed disk that rotates in conjunction with the pulley 11, whose tip extends to the inside of the oil reservoir 15 on the pulley 11. An oil application device 10A to which 18 is attached may be used. As a result, the oil 2 is dropped on the pulley 11 to supply the oil 2 to the surface of the steel wire 1, and the blade 18k of the bladed disk 18 that rotates in conjunction with the pulley 11 causes the oil reservoir 15 to Since the oil 2 can jump up to the vicinity of the opening 13a of the oil box 13 and a part of the dropped oil 2 can be collected, an appropriate amount of oil 2 can be stably applied to the steel wire 1 with a simple configuration. be able to.
[0012]
<Example>
While winding the steel wire finished to a wire diameter of 0.10 to 0.40 mm in the wire drawing process at a high speed of 600 to 1200 m / min, it is 2 to 10 times the diameter of the wire according to the present invention. After installing an oil application device 10A using a pulley having a groove bottom portion having a groove bottom width, and applying oil to the steel wire by changing the amount of oil dripping onto the pulley, the amount of oil adhering to the wire surface was examined. The results are shown in Table 1 below, and the results of examining the dispersion σ of the oil adhesion amount are shown in Table 2 below. For comparison, the results of similar tests are also shown for the conventional V-pulley and the groove bottom width PW outside the above range.
[Table 1]

[Table 2]

As is apparent from Table 1, in the oil application apparatus using the conventional V pulley, when the oil dripping amount is increased (in the dripping state in the figure), the amount of oil adhering to the wire is extremely reduced. In Examples 1 and 2 using pulleys, even when the oil dripping amount is increased, the oil adhering amount does not decrease and the oil adhering amount variation σ is also smaller than the conventional example. However, it was confirmed that a predetermined amount of oil could be stably applied to the surface of the steel wire.
In Comparative Example 1 in which the groove bottom width PW is narrowed, the amount of oil attached to the wire is reduced, and the variation σ in the amount of adhesion is similar to that in the conventional example, and in Comparative Example 2 in which the groove bottom width PW is widened, the wire is reduced. Although there was little decrease in the amount of oil adhering to the surface, the variation in the amount of adhesion σ was larger than in the conventional example.
[0013]
【The invention's effect】
As described above, according to the present invention, oil is dropped onto a pulley having a V-shaped groove, and the oil is applied to the steel wire passing through the groove of the pulley at a linear speed of 600 to 1200 m / min. in the oil coating apparatus for, the groove bottom width of the groove of the pulley than was formed in the following 10 times 2 times the diameter of the scan Chiruwaiya, even when increasing the oil dropping amount, a predetermined amount of the steel wire surface Can be stably applied, and the unwinding tension of the steel wire can be stabilized.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an oil coating apparatus for steel wire according to the present embodiment.
FIG. 2 is a diagram showing another configuration of an oil application device for steel wire according to the present invention.
FIG. 3 is a diagram showing a configuration of a conventional oil application apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Steel wire, 2 oil, 10, 10A Steel wire oil application apparatus, 11 pulley, 11a groove part, 11z groove bottom part, 12, 12A oil dripping apparatus, 13 oil box, 13a oil box opening part, 14 oil discharge part, 15 Oil reservoir, 16 oil tank, 17 hose, 18 disc with blade, 18k blade.

Claims (2)

For steel wire, comprising a pulley having a V-shaped groove and a dropping device for dropping oil on the pulley, and applying oil to the steel wire passing through the groove of the pulley at a linear speed of 600 to 1200 m / min . An oil coating apparatus for steel wire, wherein a groove bottom width of the groove portion of the pulley is set to be not less than 2 times and not more than 10 times a diameter of the steel wire. An oil dripping device having an oil box having an opening at the top and an oil discharge passage communicating with the oil box is disposed above the pulley, an oil reservoir is installed below the pulley, and the pulley 2. A steel wire oil applicator according to claim 1, further comprising a bladed disk that extends to the oil reservoir and rotates in conjunction with the pulley.

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