JP3323612B2 - Lubricator for continuous drawing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dice for drawing a wire rod, which is disposed inside a dice box filled with a powdery lubricant, and rotates along with the movement of the wire rod during the processing. The present invention relates to a lubricating apparatus for continuous drawing including a stirring roller useful for flow toward a die, specifically,
Efficiently discharges the deteriorated lubricant generated during wire drawing from the die box without the need for worker monitoring and labor load, and new lubrication when the amount of lubricant in the die box is insufficient. The present invention relates to a lubricating apparatus for continuous drawing in which a lubricant can be replenished into a die box, thereby reducing the number of times of renewing all the lubricant in the die box.

[0002]

2. Description of the Related Art Wire ropes, steel cords, etc.
Usually, as shown in FIG. 4, it is manufactured by wire drawing in which a wire is drawn out with a die arranged inside a die box. In this wire drawing, 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. The role of the lubricant in wire drawing is extremely large.

[0003] For example, dehydrated granular soap containing sodium stearate as a dry lubricant as a main component is a white powder and is easily decomposed by heat. The decomposed lubricant loses its lubricating ability and deteriorates. The lubricant supplied to the interface between the die and the wire also tends to deteriorate due to heat generation of the die and the like. When the deteriorated lubricant condenses and solidifies around the wire, a gap is formed between the lubricant around the wire and the wire, so that the lubricant is not supplied to the interface between the die and the wire. Problems such as heat generation are likely to occur.

[0004] On the other hand, in order to draw a wire to a desired wire diameter, continuous drawing is generally performed not by a single drawing but by a continuous plural times of drawing. In this continuous drawing, since the lubricant attached to the wire enters and exits the die box through the wire, it is necessary to manage the balance of the amount of lubricant in the die box. When there is a shortage, it is necessary to replenish the lubricant promptly so that problems such as heat generation of the die do not occur. In this case, conventionally, an operator has monitored and appropriately supplied the lubricant.

Further, the deteriorated lubricant generated at the interface between the die and the wire is carried into the die box while being attached to the wire, and the deteriorated lubricant has a weak adhesion to the wire, so that the deteriorated lubricant has a weak adhesion to the wire. , It is easy to peel off from the wire and accumulate. As a result, the ratio of the deteriorated lubricant to the total amount of the lubricant in the die box gradually increases, and the lubricating ability of the lubricant at the interface decreases. When the ratio reaches a predetermined value at which a problem such as heat generation of the die occurs, the lubricant in the die box must be completely renewed.

[0006]

However, the worker manages the balance of the amount of lubricant in the die box, and when the amount of lubricant is insufficient, the work of appropriately replenishing the lubricant requires an increase in man-hours. , Resulting in an increase in product costs. Conventionally, the only way to remove the degraded lubricant accumulated in the die box is to renew the entire lubricant in the die box. With Therefore, development of means for minimizing the number of times of renewing the entire lubricant has been desired.

[0007] Accordingly, the present invention effectively removes the degraded lubricant generated during the wire drawing process and brought in through the wire from the die box without the need for the worker to manage the lubricant balance and the labor load. However, when the amount of lubricant in the die box is insufficient, a new lubricant can be supplied into the die box. The purpose is to develop.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a die for wire drawing a wire inside a die box filled with a powdery lubricant. Equipped with a stirring roller that assists the lubricant to flow toward the dice by rotating along with the movement of the wire, a top plate with a relatively large opening is provided above the die box, and the top plate is loaded through a hopper. A lubricant storage chamber for temporarily storing the new lubricant, and a lubricant discharge chamber adjacent to the storage chamber and located above the opening of the top plate, wherein the storage chamber is located above the top plate opening, It is a lubricating apparatus for continuous drawing, characterized in that a reciprocating device for moving the discharge chamber toward the outside of the top plate is provided. Here, the lubricant is a dry lubricant typified by dehydrated granular soap containing sodium stearate as a main component, and means a lubricant having a property of decreasing its density when deteriorated.

FIG. 1A is an oblique view of a typical continuous wire drawing lubricating apparatus according to the present invention, and FIG. 1B is a sectional view of this apparatus. In the drawing, 1 is a lubricating device for continuous drawing, 2 is a wire, 3 is a die, 4 is a lubricant, 5 is a die box, 6 is a stirring roller, 8 is a top plate, 10 is a lubricant storage room, and 11 is a lubricant storage room. The lubricant discharge chamber 12 is a reciprocating device. The lubricating apparatus 1 for continuous drawing is provided with a die 3 for drawing a wire 2 therein, and is rotated in a die box 5 filled with a powdery lubricant 4 in accordance with the movement of the wire during processing. And a stirring roller 6 that helps the lubricant 4 flow toward the die 3. Above the die box 5, a top plate 8 having a relatively large opening 7 is provided. On the top plate 8, a lubricant storage chamber 10 holding a new lubricant 4a charged through a hopper 9 is provided. And a reciprocating device 12 comprising a lubricant discharge chamber 11 located adjacent to the upper portion of the top plate 8 and above the opening 7.

[0010] The reciprocating device 12 includes a lubricant storage chamber 1.
The drive unit 15 reciprocates the wire in the drawing direction 13 or the opposite direction 14 so that the zero and the lubricant discharge chamber 11 can be positioned above the opening 7 of the top plate 8. In FIG. 1, the reciprocating device is automatically operated at predetermined time intervals by the driving device 15 connected to a control device (not shown). However, the reciprocating device may be manually operated and is not particularly limited. Further, it is preferable that the arrangement position of the opening 7 of the top plate 8 is above the stirring roller 6 where the deteriorated lubricant 4b easily floats and accumulates.

The amount of the lubricant 4 in the die box 5 is determined at the initial stage of the drawing operation at the cross-sectional height of the continuous drawing lubrication apparatus 1 as shown in FIG. Top plate 8
At the level 16 immediately below. While the wire drawing is performed continuously, the lubricant 4 in the die box 5 fluctuates from the level position 16 immediately below the top plate 8. This variation may be higher or lower than the level position 16 immediately below the top 8 due to changes in various conditions and the like.

FIGS. 2A to 2C show a die box 5.
This figure shows the main operation of the continuous drawing lubricating device 1, particularly the reciprocating device 12, when the lubricant 4 in the inside is located at a position higher than the level 16 directly below the top plate 8. Lubricant 4
Is located at a position higher than the level 16 immediately below the top plate 8, the deteriorated lubricant 4b that has floated by the specific gravity separation passes through the opening 7 of the top plate 8 as shown in FIG. 1
1 is stored. On the other hand, a new lubricant 4 a is stored in the lubricant storage chamber 10 through the hopper 9. Thereafter, as shown in FIG. 2B, the deteriorated lubricant 4b accumulated in the lubricant discharge chamber 11 moves the reciprocating device 12 in the drawing direction 13 to move the discharge chamber 11 outside the top plate 8. It is discharged by sending it out. At this time, the storage room 1
0 is located above the opening 7 of the top plate 8, but the lubricant 4 in the die box 5 has already been filled up to the level 16 directly below the top plate 8, so that the lubricant 4 in the die box 5 is deposited. Unless the condition is not changed, the new lubricant 4a in the lubricant storage chamber 10 is hardly replenished in the die box 5. Then, as shown in FIG. 2 (c), the reciprocating device 12 is moved in the direction 14 opposite to the drawing direction 13 to return the reciprocating device 12 to the same arrangement as in FIG. 2 (a). At this time, the lubricant 4 does not exist in the lubricant discharge chamber 11, and the lubricant 4 in the die box 5 is at the level 16 immediately below the top plate 8.

On the other hand, FIGS. 3A to 3C show the lubricating apparatus 1 for continuous drawing, particularly when the lubricant 4 in the die box 5 is located at a position lower than the level 16 directly below the top plate 8. This shows the main operation of the reciprocating device 12. As shown in FIG. 3A, the lubricant 4 in the die box 5
Is located lower than the level 16 immediately below the top plate 8, the lubricant 4 does not exist in the lubricant discharge chamber 11. On the other hand, a new lubricant 4 a is stored in the lubricant storage chamber 10 through the hopper 9. Thereafter, as shown in FIG. 3B, the lubricant discharge chamber 11 is sent out of the top plate 8. In this case, the lubricant discharge chamber 11 has a function of discharging the lubricant 4. I have nothing. Further, the lubricant storage room 10 is provided with a top plate 8.
Of the lubricant storage chamber 1
The new lubricant 4 a temporarily stored at 0 is supplied into the die box 5. This supply amount is up to the level position 16 immediately below the top 8. Then, as shown in FIG. 3C, the reciprocating device 12 is moved in the direction 14 opposite to the drawing direction 13 so that the reciprocating device 12 is moved to the position shown in FIG.
Return to the same arrangement. Then, in the lubricant storage room 10,
New lubricant 4 is stored in the storage room 10 through the hopper 9.
a is re-stored. By repeating this operation, the lubricant 4 in the die box 5 becomes the level 1 immediately below the top plate 8.
6 will be satisfied.

As is apparent from the above description,
If the lubricant 4 in the die box 5 is located at a position higher than the level 16 directly below the top plate 8, the lubricating apparatus 1 for continuous drawing of the present invention discharges the deteriorated lubricant 4b, and If it is located at a lower position, new lubricant 4a is supplied. The lubricant 4 in the die box 5
However, when it is at the level 16 immediately below the top 8, neither the discharge nor the replenishment is performed, but this does not cause a problem. By setting the time interval for moving the reciprocating device 12 according to the fluctuation of the amount of the lubricant in the die box 5, the discharge and the replenishment can be performed effectively.

The above description merely shows the embodiment of the present invention, and various changes can be made within the scope of the claims.

[0016]

In order to remove the degraded lubricant accumulated in the die box, conventionally, there is no other way but to renew all the lubricant in the die box. , To increase product costs,
As described above, it is necessary to reduce the number of times of updating all the data as much as possible.

Therefore, the inventor has studied means for removing only the deteriorated lubricant mixed in the lubricant in the die box. As a result, when the lubricant deteriorates, it changes into a feather shape, the porosity increases, and the density decreases. As a result, when the lubricant in the die box is caused to flow by a stirring roller or the like, the specific gravity is separated, and the deteriorated lubricant is removed. Has emerged. Therefore, it was found that if there is a means for removing only the degraded lubricant which has floated, the time interval for renewing all the lubricant can be extended.

The lubricating apparatus 1 for continuous drawing according to the present invention comprises a top plate 8 having a relatively large opening 7 above the die box 5.
A reciprocating device 12 including a lubricant storage chamber 10 and a lubricant discharge chamber 11 is disposed on the top plate 8, and the discharge chamber 11 of the reciprocating device 12 is disposed outside the top plate 8. On the other hand, by disposing the storage room 10 movably above the opening 7 of the top plate 8, when the lubricant 4 in the die box 5 is located at a position higher than the level 16 directly below the top plate 8, When present in the discharge chamber 11, the deteriorated lubricant 4 b floating due to the specific gravity separation is discharged, and when the lubricant 4 is at a position lower than the level 16 directly below the top plate 8,
The new lubricant 4 a in the lubricant storage chamber 10 can be supplied into the die box 5.

[0019]

Next, a specific embodiment of a lubricating apparatus 1 for continuous drawing according to the present invention will be described with reference to FIG. 1 (b).
The lubricating apparatus 1 for continuous drawing used in the embodiment has a die 3 in which a die 3 for drawing a wire 2 is internally disposed and filled with a lubricant 4 composed of dehydrated granular soap containing sodium stearate as a main component. 5 is provided with a stirring roller 6 having an outer diameter of 50 mm which rotates with the movement of the wire 2 being processed. The continuous wire drawing machine for performing continuous wire drawing was a non-slip type, provided with seven continuous wire drawing lubricating devices 1, and the wire rod was drawn to a wire diameter of 3.0 mm to 1.5 mm. The wire drawing speed of the wire 2 differs at each stage of wire drawing,
~ 1000 m / min. Dice box 5
The dimensions are 150mm long, 300mm wide and 150m high
m. Above the die box 5, a top plate 8 having a 50 mm square opening 7 is provided. On this top plate 8, a lubricant storage chamber 10 for holding a new lubricant 4a charged through a hopper 9 is provided. A reciprocating moving device 1 comprising a lubricant discharge chamber 11 positioned adjacent to the upper side of the opening 7 of the top plate 8.
2 is provided. The opening 7 of the top plate 8 was provided above the stirring roller 6. The reciprocating device 12 can be reciprocated by the driving device 15 in the drawing direction 13 or the opposite direction 14 so that the lubricant storage chamber 10 and the lubricant discharge chamber 11 can be positioned above the opening 7 of the top plate 8. It is arranged in. The movement interval at this time is 50 mm. Reciprocating device 1
2 is set to operate automatically by the driving device 15.

[0020] Lubricating device 1 for continuous drawing used in the conventional example
Is provided with a stirring roller 6 which rotates in accordance with the movement of a wire being processed in a die box 5 in which a die 3 is arranged and filled with a lubricant 4.

In the test, the period until the lubricant in the die box had to be completely renewed was examined, based on the frequency of damage to the wire rod due to poor lubrication, and evaluated based on the period. As a result, the embodiment was able to extend the period in which the entire replacement was performed as compared with the conventional example.

[0022]

As described above, the lubricating apparatus 1 for continuous drawing according to the present invention uses a lubricant 4 in a die box 5 like a conventional continuous drawing machine.
The work load is reduced because the worker does not need to perform the replenishment work. In addition, by discharging only the degraded lubricant 4b that floats due to the specific gravity separation, it is possible to reduce the number of times that the worker updates the entire lubricant 4 in the die box 5. Therefore, product cost can be reduced.

[Brief description of the drawings]

FIG. 1 (a) is a perspective view of a typical lubricating apparatus for continuous drawing according to the present invention, and FIG. 1 (b) is a cross-sectional view of this apparatus. It is a schematic diagram of the device of the present invention.

FIGS. 2 (a) to 2 (c) show a continuous wire drawing lubrication device 1 when the amount of lubricant in a die box is increased.
3 is a diagram showing a main operation of the reciprocating device 12 in particular.

FIGS. 3 (a) to 3 (c) show a lubricating apparatus 1 for continuous drawing when the amount of lubricant in a die box is reduced.
3 is a diagram showing a main operation of the reciprocating device 12 in particular.

FIG. 4 is a sectional view of a conventional continuous drawing lubrication device.

[Explanation of symbols]

 1 Lubricating device for continuous drawing 2 Wire 3 Dice 4 Lubricant 5 Dice box 6 Stirring roller 8 Top plate 10 Lubricant storage room 11 Lubricant discharge room 12 Reciprocating device

Claims (1)

(57) [Claims] 1. A die for wire drawing a wire is disposed inside a die box filled with a powdery lubricant, and the lubricant flows toward the die while rotating along with the movement of the wire during the processing. In a continuous drawing lubrication device equipped with a useful stirring roller, a top plate with a relatively large opening is provided above the die box, and new lubricant inserted through a hopper is temporarily stored on this top plate. A lubricant storage chamber, and a lubricant discharge chamber adjacent to the storage chamber and located above the top plate opening, wherein the storage chamber is above the top plate opening, and the discharge chamber is outside the top plate. A lubricating device for continuous drawing, comprising a reciprocating device that moves toward the end.