JPH07178442A - Lubricating device for continuous wire drawing - Google Patents

Abstract

PURPOSE:To obtain a lubricating device for continuous wire drawing in which a number of cleaning and updating of a lubricant in a die box is low. CONSTITUTION:In a lubricating device 1 for continuous wire drawing, a die box 5 having a die 3 placed therein is divided into a lubricant supply chamber 7 arranged with an agitating roller 6 and a wire drawing chamber 10 having a discharging hole 9 to which a powdery lubricant 4 stuck to the surface layer of a wire rod 2 traveling through the through hole 8 of lubricant supply chamber 7 is piled/solidified near the nib 3 of die to be extruded/fallen as a flat lump. Further, a sieve 11 to remove a flat lump and a storing chamber 12 to clean the lubricant with passing the sieve 11 are placed under the discharging hole 9 of a wire drawing chamber 10, a circulation supply device 14 in which the lubricant 4a collected in the storing chamber 12 is guided to the lubricant supply chamber 7 for reusing is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating apparatus for continuous wire drawing in which the number of times of renewing all the lubricant in a die box is reduced. A lubricant that solidifies and solidifies near the nib to form flat lumps (hereinafter referred to as "solidified lubricant").
The present invention relates to a lubricating device for continuous wire drawing, which effectively removes oil and purifies the lubricant in the die box.

[0002]

2. Description of the Related Art Wire ropes, steel cords, etc.
Usually, as shown in FIG. 2, the wire is manufactured by wire drawing in which a wire is drawn out by a die arranged inside a die box. In this wire drawing process, it is common to supply a lubricant to the interface between the die and the wire for the purpose of suppressing heat generation of the die and damage such as scratches on the wire drawing. The role of lubricants in wire drawing is extremely large.

[0003]

For example, a dehydrated granular soap containing sodium stearate as a main component, which is a dry lubricant, is a white powder, and solidifies into flat lumps under high temperature and high pressure environment. It is easy to change. Especially in the first wire drawing process, a large amount of lubricant is consumed, and the lubricant adhering to the surface layer of the wire is extruded near the nib of the die and easily accumulates, which eventually becomes a flat lump. And becomes a solidified lubricant. The ratio of the solidified lubricant to the total amount of the lubricant in the die box gradually increases, and the lubricant is not supplied to the interface between the die and the wire rod, resulting in a problem such as heat generation of the die. In the conventional lubricating apparatus as shown in FIG. 2, the solidified lubricant in the die box gradually increases, but there is no means for removing only the solidified lubricant, which causes a problem such as heat generation of the die. In some cases, the worker had no choice but to update all the lubricant in the die box. The work of renewing all the lubricant in the die box involves an increase in man-hours, which causes an increase in product cost. Therefore, it was necessary to develop means for removing only the solidified lubricant in the die box.

Therefore, according to the present invention, the solidified lubricant generated in the vicinity of the nib of the die by the first wire drawing is effectively discharged without the worker performing the cleaning, and the lubricant in the die box is cleaned. It is an object of the present invention to develop a lubricating device for continuous wire drawing in which the number of times of updating all the lubricant in the die box is small.

[0005]

In order to achieve the above object, the present invention provides a die box having a die for internally drawing a wire rod, and a stirring roller for rotating the wire rod as the wire rod is fed. The lubricant replenishment chamber and the powdery lubricant adhering to the surface layer of the wire that moves through the through hole of this lubricant replenishment chamber are accumulated and solidified near the nib of the die to form flat lumps. It is divided into a wire drawing chamber with a discharge hole that is pushed out and dropped, and below the discharge hole of the wire drawing chamber, a sieve that removes the flat lumps and a lubricant that passes through this sieve A lubricating device for continuous wire drawing, comprising: a storage chamber to be purified; and a circulation supply device for guiding the lubricant collected in the storage chamber to a lubricant replenishing chamber for reuse. The lubricant here is a dry lubricant represented by dehydrated granular soap containing sodium stearate as a main component,
Further, it means a lubricant having the property of being deposited and solidified in the vicinity of the nib of the die by a wire drawing process to form a flat lump.

FIG. 1 (a) is a cross-sectional view of a typical continuous wire drawing lubrication apparatus according to the present invention at the initial stage of wire drawing, and FIG. 1 (b) is a solidification that accompanies wire drawing. It is a figure which shows the process of removing a lubricant. In the figure, 1 is a continuous wire drawing lubricating device, 2 is a wire rod, 3 is a die, 4 is a lubricant, 5 is a die box, 6 is a stirring roller, 7 is a lubricant supply chamber, 10 is a wire drawing chamber, 11 is a sieve, 12 is a storage chamber,
Reference numeral 14 is a circulation supply device. This continuous wire drawing lubricating device 1
The die box 5 in which the die 3 for drawing the wire 2 is arranged, the lubricant replenishing chamber 7 in which the agitating roller 6 rotating with the feeding of the wire 2 is arranged, and the lubricant replenishing chamber 7 A wire drawing having a discharge hole 9 in which the powdery lubricant 4 adhering to the surface layer of the wire 2 moving through the through hole 8 of the solidified lubricant 4b near the front of the nib 9 of the die 3 is extruded and falls. It is divided into the processing chamber 10. From the discharge hole 9 of the wire drawing chamber 10, the powdered lubricant 4 together with the solidified lubricant 4b.
a also falls downward. Lubricants 4a and 4b dropped
Screening is performed by a screen 11 arranged below the discharge hole 9. That is, the solidified lubricant 4b cannot pass through the sieve 11 and only the powdery lubricant 4a can pass through, and the passed powdery lubricant 4a is collected in the storage chamber 12. Also, the screen 11
In order to effectively remove the solidified lubricant 4b remaining on the upper part and to effectively pass the powdery lubricant 4a through the mesh of the screen 11, the screen 11 is arranged in an inclined manner and the screen 11 is made to vibrate 13.
It is preferable to vibrate.

Purifying lubricant 4a collected in the storage chamber 12
When the lubricant in the die box is insufficient, the circulation supply device 14 is operated to be guided to the lubricant replenishing chamber 7 for reuse. The circulation supply device 14 is, in FIG. 1, a pipe 15a.
And 16a, the screws 15b and 16b provided in the pipes 15a and 16a, and the electric motors 15c and 16c that rotate the screws 15b and 16b, respectively, but are particularly limited to this configuration. I don't.

The above description is merely an example of the present invention, and various modifications can be made within the scope of the claims.

[0009]

The removal of the solidified lubricant accumulated in the die box has conventionally been the only means for renewing the lubricant in the die box.
In order to overload the work load, it is advantageous to reduce the number of times as much as possible, that is, to extend the time interval for renewing all, which is advantageous in terms of product cost, and therefore, means for removing only the solidified lubricant is necessary. Was mentioned above.

In the continuous wire drawing lubricating apparatus 1 of the present invention, the solidified lubricant 4b generated near the nib of the die 3 is removed by the sieve 11, and the lubricant 4a purified by passing through the sieve 11 is circulated and supplied. By guiding to the lubricant replenishment chamber 7 by the device 14 and reusing it, only the solidified lubricant 4b is effectively removed, and when the lubricant 4 in the die box 5 is insufficient, the purified lubricant 4a is replenished. You can As a result, the lubricant in the die box is cleaned, so that the number of times the worker updates all the lubricant in the die box is reduced.

[0011]

EXAMPLE Next, a specific example of the continuous wire drawing lubricating device 1 according to the present invention will be described with reference to FIG.
The continuous wire drawing lubricating apparatus 1 used in the embodiment has a die box 5 in which a die 3 for wire drawing a wire rod 2 is arranged. The die box 5 includes a lubricant supply chamber 7 and a wire drawing chamber. It is divided into 10 and the size is 70
It is 0 mm, 240 mm wide, and 220 mm high. The lubricant supply chamber 7 has a size of 500 mm in length and 200 m in width.
m, the height is 300 mm, and the stirring roller 6 having an outer diameter of 60 mm that rotates with the feeding of the wire rod 2 is provided.

The wire drawing chamber 10 has the lubricant 4 attached to the surface layer of the wire 2 which moves through the through hole 8 of the lubricant supply chamber 7.
Is provided in the vicinity of the nib of the die 3 as a solidified lubricant 4b, and is provided with a discharge hole 9 at a position where it is extruded and dropped. It is connected. As the lubricant 4, dehydrated granular soap containing sodium stearate as a main component was used. The lubricant that drops through the discharge hole 9 includes not only the solidified lubricant 4b but also the normal lubricant 4a. The lubricants 4a and 4b that fall are removed from the sieve 11 located below the discharge hole 9.
Be sorted by.

The screen 11 has a mesh-like lattice, and the mesh size is 2.5 mm square. The sieve 11 is a solidified lubricant 4b.
On the sieve, and only the powdered lubricant 4a is passed through.
The solidified lubricant 4b remaining on the screen 11 is collected in another container 18 by arranging the screen 11 in an inclined position and vibrating the screen 11 by the vibrator 13. The purified lubricant 4a that has passed through the sieve 11 is collected in the storage chamber 12. When the amount of the lubricant 4 in the die box 5 is insufficient, the pipes 15a and 16a and the screws 15b and 16b provided in the pipes 15a and 16a, respectively,
The circulating supply device 14 composed of electric motors 15c and 16c for rotating these screws 15b and 16b is operated to move the purified lubricant 4a collected in the storage chamber 12 at a speed of 450 mm / s to replenish the lubricant. It was supplied to the chamber 7 and reused.

A continuous wire drawing machine for performing continuous wire drawing is a non-slip type and is equipped with one or two lubricating devices 1 for continuous wire drawing. The wire rod 2 was made to have a wire diameter of 5.5 mm to 3.0 mm by this continuous wire drawing. The wire drawing speed is different in each stage of wire drawing, but is 50 to 450 m / min. It is a degree.

Lubrication device 1 for continuous wire drawing used in the conventional example
Is provided with a stirring roller 6 which rotates in accompaniment with the movement of the wire rod during processing in a die box 5 in which the die 3 is arranged and which is filled with a lubricant 4.

Lubrication device 1 for continuous wire drawing used in the examples
Can clean the lubricant in the die box,
Compared to the conventional example, the period until the lubricant in the die box has to be completely renewed is extended, and the consumption of the lubricant is halved.

[0017]

EFFECTS OF THE INVENTION By using the continuous wire drawing lubrication apparatus 1 of the present invention, it is possible to eliminate the work load of the worker.
In particular, the solidified lubricant 4b generated in the vicinity of the nib of the die 3 by the first wire drawing is effectively discharged, and the lubricant 4 in the die box 5 is purified to remove the lubricant 4 in the die box 5. The total number of updates can be reduced, and the consumption amount of the lubricant 4 can be reduced. Therefore, the product cost can be reduced.

[Brief description of drawings]

1 (a) and 1 (b) are cross-sectional views of a typical continuous wire drawing lubricating device according to the present invention.

FIG. 2 is a cross-sectional view of a conventional continuous wire drawing lubricating device.

[Explanation of symbols]

 1 Continuous wire drawing lubricator 2 Wire material 3 Dies 4 Lubricant 5 Dice box 6 Stirring roller 7 Lubricant replenishing chamber 10 Wire drawing chamber 11 Sieve 12 Storage chamber 14 Circulating supply device

Claims (1)

[Claims] 1. A die box in which a die for wire drawing a wire is disposed, a lubricant replenishing chamber in which a stirring roller rotating with feeding of the wire is disposed, and a through hole of the lubricant replenishing chamber. Separated into a wire drawing chamber with a discharge hole in which powdered lubricant adhering to the surface of a wire moving through it solidifies and solidifies near the nib of the die to form a flat lump that is extruded and falls. Then, below the discharge hole of the wire drawing chamber, a sieve for removing the flat lumps and a storage chamber for purifying the lubricant by passing through the sieve are arranged, and the lubricant collected in the storage chamber A continuous wire drawing lubrication device comprising: a circulation supply device for guiding and recycling the same to a lubricant supply chamber.