KR101568602B1 - Apparatus for cooling wire rod coil - Google Patents

Abstract

According to the present invention, an apparatus to cool a wire rod coil comprises: a ventilation driving means to provide a ventilating force of air; and a ventilating guide means connected to the ventilation driving means, guiding air to be ventilated to both sides of the wire rod coil falling on an up-down stepped section between conveyors to uniformly cool the wire rod coil. The ventilation guide means to guide air to be ventilated to both sides of the wire rod coil falling on the up-down stepped section between the conveyors is included in the present invention, As such, the air is ventilated to both sides of the wire rod coil where an overlap is released in the up-down stepped section such that a temperature difference in the width direction of the wire rod coil is reduced in an air cooling zone, thus uniformly cooling the wire rod coil. More specifically, the air is horizontally injected along a pass line as a slanted falling route and in a side direction, thereby maximizing the efficiency in cooling the wire rod coil.

Description

[0001] Apparatus for cooling wire rod coil [0002]

The present invention relates to a wire coil cooling apparatus, and more particularly, to a wire coil cooling apparatus for uniformly cooling a wire coil by reducing a widthwise temperature deviation of the wire coil in an air cooling table.

FIG. 1 is a schematic view showing a process of manufacturing a wire coil in general, and FIG. 2 is a plan view schematically showing a cooling band in FIG.

Generally, the wire rod is cooled in a cold water bath after rough rolling (rough rolling, intermediate rough rolling, intermediate rolling and finishing rolling), then wound (integrated) and put into a correcting line. Such a wire rod has a diameter of 5.5 to 15 mm It will produce wire rod and large diameter wire with diameter of 15 ~ 42 mm.

On the other hand, in the case of a small-diameter wire rod, if it is formed into a helical coil shape through a laying head, the heat treatment is performed in parallel with the conveying of the conveyor, then is integrated through a reforming tube, .

As shown in Figs. 1 and 2, the material rolled in the rolling mill 11 is cooled by the water-cooled bar 12 cooled by cooling water, and wound by the lifting head 13 as a winding machine. The wound wire coil 1 is continuously dropped to the conveying roller 20a of the conveyor 20 and the wound wire coil passes through the conveyor 20 while blowing air blown from the blower unit 14 It is cooled by air. Then, it is integrated into the final product in an accumulator 15 associated with the conveyor 20.

That is, the wire-wound coils 1 continuously wound in the form of a coil in the laying head 13 are conveyed to the conveyor 20 while the air blown from the air blowing unit 14 arranged along the conveyor When the wire-wound coil 1 is brought into contact with the wire-wound coil 1 to be fed, the wire-wound coils are cooled at a low temperature before the heat-treatment.

For example, the temperature of the wire rod coil 1 when dropped on the feeding roller 20a while being wound by the laying head 13 is approximately 850 to 950 DEG C, while the wire rod coil 1 subjected to cooling is approximately 150 To about 300 ° C.

1 and 2, the air blowing unit 14 includes an air duct 14b in which a blower 14a is disposed at a lower portion, and is disposed on the air duct 14b between the conveying rollers 20 That is, the nozzle opening 14c is provided.

For example, such a blowing unit 14 is also called a stellmoor cooling stall, and it has the advantage of providing various cooling capacities according to the cooling conditions such as the strength of the wind power or the feeding speed of the wire coil 1, And the same blowing in the width direction of the coil 1 is realized.

Therefore, in the case of the Stellmoor cooling band using a known air blowing unit, as shown in Figs. 2 and 3, when the wire coil 1 is placed on the side (edge portion) of the wire coil 1 4 and the central portion of the wire rod coil 1 up to 80 占 폚 at the time when the transformation of the material to be cooled takes place under the same blowing environment as shown in Fig. Edge portion) of the surface of the substrate.

That is, as shown in FIG. 5, in the case of a wire coil having 0.8% of carbon and a diameter of 5.5 mm, as the distance from the laying head increases, the difference in temperature history between the center portion and the side portion (edge portion) .

Such microstructures vary in the width direction of the wire coil due to the temperature deviation in the center portion and the edge portion of the wire coil due to the difference in stacking (stacking) density, resulting in product failure.

6A and 6B are schematic diagrams showing the widthwise air velocity distribution of the conventional wire coil 1, in comparison with the present invention described later, in FIGS. 6A and 6B, the edge portion of the wire coil 1 and the difference And a C region deviated to one side of the wire member coil 1 can be generated. Such regions B and C are substantially air blowing loss regions, and the region of the wire member coil 1, particularly the edge portion of a high overlapping density There is a problem in that cooling efficiency of the edge portion of the wire coil 1 is insufficient.

That is, in the case of the conventional blowing cooling, a more concentrated and effective blowing cooling is not implemented at the edge portion (portion A in Fig. 2) of the wire coil 1, and there is a large amount of air blown out of the edge portion in actual blowing .

In the conventional case, when the ring diameter of the wire rod coil 1 is changed or when a wobble (a ring diameter of the wire rod coil is periodically changed) is used, there is a problem that it is difficult to appropriately cope with the blowing direction .

Therefore, when the microstructures of the wire coil 1 differ due to the cooling fluctuation of the wire coil 1 (when the difference is severe), an additional heat treatment step is required, which increases the production cost.

In order to reduce the temperature variation in the width direction of the wire coil, although not shown in the drawing, conventionally, partition walls are provided in the longitudinal direction inside the air duct of the blowing unit to adjust the cooling capacity of the edge portion of the wire coil However, in this case, the effect is small when the diameter of the wire coil itself is changed.

Alternatively, there is a method of spraying air or cooling water (mist) on the edge portion of the wire coil on the conveying conveyor. In this case, however, it is difficult to control the cooling capacity. Further complicated equipment is required. The spatial limitations such as the case of being covered on a conveyor become a problem.

Alternatively, there is a method in which a damper for simply controlling the air direction is provided on the partition wall disposed inside the air duct of the air blowing unit to guide the blowing air to the edge of the wire coil as far as possible. However, The complete resolution of the deviation is insufficient.

Particularly, in a situation where the required diameter (size) of a wire rod product is getting larger in recent years, the effectiveness of the known cooling method described above has become a problem.

Published patent application No. 10-2012-0058257

SUMMARY OF THE INVENTION The present invention has been devised to solve the above problems, and it is an object of the present invention to provide a wire coil cooling apparatus capable of uniformly cooling a wire coil by reducing a widthwise temperature deviation of the wire coil in an air cooling table have.

According to an aspect of the present invention, there is provided a wire coil cooling apparatus comprising: a blowing fan driving means for providing a blowing force of air; And blowing guide means connected to the blowing means for blowing air to both sides of the wire coil falling in the upper and lower end sections between the conveyors so as to uniformly cool the wire coil.

Here, the air blowing guide means may include an air duct extending to the side of the upper and lower end sections, And an air nozzle which is inclined with respect to the air duct so as to correspond to the wire member coil obliquely falling path in the upper and lower end sections, air can be jetted on the horizontal line in the lateral direction from the pass line which is the oblique drop path of the wire member coil .

The air nozzle is rotated in the air duct so as to adjust the spray angle of the air through the air nozzle. The present invention further includes rotation driving means for rotating the air nozzle in association with the air nozzle can do.

Here, the rotation driving means may include: a pinion gear provided on a side of the air nozzle; And a driving member that is gear-connected to the pinion gear to rotate the pinion gear.

As a specific example, the driving member may be a driving cylinder in which a rack gear is mounted on a piston, and the pinion gear may be formed so that a gear engaged with the rack gear is parallel to the gear shaft.

As another example, the driving member may be a driving motor in which a screw bar is mounted on a motor shaft, and the pinion gear may be spirally protruded from a gear engaged with the screw bar.

The air nozzle has a cylindrical cross section, and a stopper hooked to the opening edge of the air duct may be protruded so that the rotation angle is limited.

Meanwhile, the present invention may further include a blowing amount adjusting means configured in the air duct to adjust the blowing amount of the air.

Specifically, the blowing amount adjusting means includes: a throttle disposed in an air blowing path in the air duct, the throttle controlling the amount of blowing of air in the air duct while rotating; And a rotation motor connected to the rotation axis of the adjustment plate to rotate the adjustment plate.

In addition, the blowing amount adjusting means may include: a driving gear mounted on a driving shaft of the rotary motor; A first driven gear which is gear-engaged to one side and the other side of the driving gear; And a second driven gear that is gear-connected to the first driven gear on one side of the drive gear, wherein the throttle plate is configured to rotate the first driven gear and the second driven gear on the other side of the drive gear, And can be respectively installed on the gear shaft of the second driven gear.

According to the present invention, there is provided a blowing guide means for blowing air to the both side portions of a wire coil falling in upper and lower end sections between the conveyors, The wire coil can be uniformly cooled by decreasing the temperature variation in the width direction of the wire coil in the air cooling stand. Particularly, there is an advantage that the cooling efficiency of the wire coil can be maximized as the air is sprayed on the horizontal line in the lateral direction and the pass line, which is the oblique falling path of the wire coil.

1 is a schematic view showing a process of manufacturing a general wire coil.
Fig. 2 is a plan view schematically showing the wire-coil cooling rack of Fig. 1. Fig.
Figs. 3 and 4 are graphs respectively showing the pre-roll densities and the temperature deviations due to the pre-roll densities at the time of cooling the wire coil using the cooling band of Fig.
FIG. 5 is a graph showing the temperature history between the center portion and the side edge of the wire coil when cooling the wire coil using the cooling band of FIG. 2. FIG.
Fig. 6A and Fig. 6B are schematic views showing a blowing velocity distribution in the width direction of the wire coil when the wire rod coil is cooled using the cooling band of Fig. 2;
FIG. 7 is a view showing a section between upper and lower ends between the upper conveyor and the lower conveyor in the conveyors.
8 and 9 are a perspective view and a side sectional view showing that a wire coil is cooled in upper and lower end sections by a wire coil cooling apparatus according to an embodiment of the present invention.
10 and 11 are an enlarged view and a front sectional view showing that the wire coil is cooled in the upper and lower end sections by the wire coil cooling apparatus of FIG.
Fig. 12 is a perspective view showing the wire-wound coil cooling apparatus of Fig. 8. Fig.
Fig. 13 is a side sectional view showing the upper part of the wire-wound coil cooling apparatus of Fig. 12, and Fig. 14 is a side sectional view showing another embodiment of the rotation drive means in the wire-
15 is a side cross-sectional view showing the lower part of the wire-wound coil cooling apparatus of Fig.

In order to uniformly cool the wire coil by reducing the temperature variation in the width direction of the wire coil in the air cooling table of the present invention, air is blown to both sides of the wire coil falling in the upper and lower end sections between the conveyors, Air is blown to both side portions of the wire coil whose overlapping is released in the upper and lower end sections.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 7 is a view showing a section between upper and lower ends between the upper conveyor and the lower conveyor in the conveyors.

8 and 9 are a perspective view and a side sectional view showing that the wire coil is cooled in the upper and lower end sections by the wire coil cooling apparatus according to the embodiment of the present invention, FIG. 12 is an enlarged view and a front sectional view showing the cooling of the wire coil in the upper and lower end sections by the cooling device, and FIG. 12 is a perspective view showing the wire coil cooling device of FIG.

Referring to the drawings, the present invention includes a blower driving means (110) for providing a blowing force of air, and a blowing guide means connected to the blowing blowing means (110) and configured to uniformly cool the wire coil .

As shown in the figure, the blowing fan driving unit 110 may include a blowing motor 111 and a blowing fan 112 that is rotated by the driving motor 330, It goes without saying that any device can be utilized as long as it is configured to provide a wind power.

As shown in the drawing, the blowing guide means may have a structure in which the blowing fan driving means 110 is disposed in the lower side of the blowing fan driving means 110, as shown in the drawing.

The air guide means may be configured to guide the air to both sides of the wire coil 1 dropping in the upper and lower end sections D between the conveyors to uniformly cool the wire coil 1. [ That is, the airflow guiding means is arranged at the upper and lower end section D where air is guided to the side (edge) where the cooling efficiency in the wire coil 1 is low, and the overlapping of both side portions of the wire coil 1 is released. As the superposition of both side portions is released by dropping the wire coil 1 superimposed and conveyed on the conveyor in the upper and lower end sections D to guide the air to both sides of the wire coil 1 in the upper and lower end sections D So that uniform cooling can be achieved in the wire-wound coil 1.

In this case, the upper and lower end section D refers to a stepped structure in which the vertical height of the conveyor 21, that is, the upper conveyor 21 and the lower conveyor 22 are different, as shown in FIG. 7, The section D refers to a drop zone in which the wire coil 1 falls from the upper conveyor 21 to the lower conveyor 22. The upper and lower end sections D are formed as a difference in height between the conveyors according to the difference in conveying height during the process of manufacturing the wire coil 1 and transferring it to the collector 15.

Specifically, the air blowing guide means includes an air duct 210 extending to the side of the upper and lower end sections D, and an air duct 210 corresponding to the inclined fall path of the wire coil 1 in the upper and lower end sections D, And an air nozzle 220 that is inclined with respect to the air nozzle 220.

Here, the air duct 210 may have a structure in which the air to be blown flows to the side of the upper and lower end sections D so as to guide the flow path so that the blown air flows to the sides of the upper and lower end sections D. [

The air nozzle 220 is inclined to the air duct 210 so as to correspond to a falling path of the wire coil 1 and a tilted arrangement of the wire coil 220 during the dropping of the wire coil 1 in the upper and lower end sections. It is possible to increase the cooling efficiency for both side portions of the wire-wound coil 1 by accurately spraying the air to both side portions of the wire-wound coil 1 falling obliquely.

In other words, since the jetting to the air nozzle 220 is performed on the horizontal line in the lateral direction and the pass line as the inclined fall path of the wire coil 1, the cooling efficiency for both side portions of the wire coil 1 can be maximized . At this time, it is most preferable in view of the cooling efficiency that the air nozzle 22 is arranged horizontally on the horizontal side with respect to the pass line which is the inclined fall path of the wire coil 1, It is preferable to arrange it on the upper side of the pass line and the horizontal line or more in the lateral direction. This is because when the air nozzle 22 is disposed on the lower side of the horizontal line, it can be interfered by the conveyor and the peripheral equipment supporting the conveyor, and besides the substantially obliquely falling path, This is because the cooling effect biased toward the lower side of the coil 1 appears.

Fig. 13 is a side sectional view showing the upper part of the wire-wound coil cooling apparatus of Fig. 12, and Fig. 14 is a side sectional view showing another embodiment of the rotation drive means in the wire-

Referring to the drawings, the present invention can be configured such that an air nozzle 220 is rotated on an air duct 210 to control the spray angle of air through an air nozzle 220, and further, And a rotation driving means for rotating the air nozzle 220.

Specifically, the rotation driving means may include a pinion gear 310 provided on a side of the air nozzle 220, and a driving member that is gear-coupled to the pinion gear 310 to rotate the pinion gear 310. At this time, the pinion gear 310 has the same axis as the longitudinal direction of the air nozzle 220, so that the air nozzle 220 rotates as the pinion gear 310 rotates.

Here, as the driving member, as an example, the driving cylinder 320 in which the rack gear 322 is mounted on the piston 321 may be utilized, as shown in Fig. At this time, the pinion gear 310 takes a shape in which gears to be engaged with the rack gear 322 are projected and disposed parallel to the gear shaft.

As the piston 321 is extended and retracted, the rack gear 322 mounted on the piston 321 reciprocates to rotate the pinion gear 310. Thus, the drive cylinder 320 rotates the air nozzle 220 ).

Further, as another example of the driving member, as shown in Fig. 14, a driving motor 330 in which a screw bar 332 is mounted on a motor shaft 331 may be utilized. At this time, the pinion gear 310 has a shape in which a screw bar 332 and a gear to be gear-engaged are spirally protruded and arranged.

As the drive motor 330 rotates, the screw bar 332 rotates to rotate the pinion gear 310, thereby eventually rotating the air nozzle 220.

The air nozzle 220 has a structure in which a part of the air nozzle 220 is inserted into the open mouth opened from the upper end of the air duct 210 toward the upper and lower end section D, So as to have a cylindrical cross-section. Since the air nozzle 220 has a cylindrical cross section, leakage of air from the opening of the air duct 210 into the gap around the air nozzle 220 can be effectively prevented. Although not shown in the drawing, a flexible bellows gasket for connecting the rim portion 211 of the air duct 210 and a stopper 221 of the air nozzle 210, which will be described later, It is possible to prevent leakage of the liquid.

Further, the air nozzle 220 may have a stopper 221 protruding from the opening edge portion 211 of the air duct 210 so as to limit the rotation angle thereof. Of course, the rotation angle of the air nozzle 220 may be limited by the driving control of the driving member, and the stopper 221 may be formed to limit the rotational angle mechanically as a double safety structure. The stopper 221 may be formed as an integral structure that is extended from the air nozzle 220 as shown in the drawing. For example, the stopper 221 may be formed as an integral structure extending from the air nozzle 220, A projecting member having a predetermined size may be mounted on the outer surface of the frame 211 as a projecting structure that can be engaged with the frame 211.

15 is a side cross-sectional view showing the lower part of the wire-wound coil cooling apparatus of Fig.

Referring to the drawings, the present invention may further include air blowing amount adjustment means configured in the air duct 210 to adjust the air blowing amount.

The blowing amount adjusting means includes an adjusting plate 410 disposed in the air blowing path in the air duct 210 and a rotating motor 420 rotating the adjusting plate 410 in conjunction with the rotating shaft of the adjusting plate 410 can do.

In this case, the control plate 410 controls the air blowing amount of the air in the air duct 210 while rotating. For example, as shown in the figure, The air blowing amount can be reduced as the air blowing device is disposed in the horizontal direction and the air blowing blowing amount can be increased as the air blowing device is disposed in the vertical direction.

Specifically, the blowing amount adjusting means includes a driving gear 430 mounted on a driving shaft of the rotation motor 420, a first driven gear 441 gear-connected to one side and the other side of the driving gear 430, And a second driven gear 442 that is gear-connected to the first driven gear 441 on one side of the first driven gear 430. At this time, the throttle plate 410 may be installed on the gear shafts of the first driven gear 441 and the second driven gear 442 on the other side of the drive gear 430, respectively, so that the two thrusters rotate in opposite directions . When the rotary motor 420 is driven by this structure, the drive shaft 430 rotates, the two first driven gears 441 and the second driven gear 442 sequentially rotate, The adjustment plate 410 provided on the first driven gear 441 and the adjustment plate 410 provided on the second driven gear 442 are rotated in opposite directions.

The present invention constructed as described above is constituted by the air blow guide means for guiding the air to the both side portions of the wire coil 1 dropping in the upper and lower end sections D between the conveyors, It is possible to uniformly cool the wire rod coil 1 by reducing the temperature variation in the width direction of the wire rod coil 1 in the air cooling stand as air is blown to both sides of the wire rod coil 1 to be released. Particularly, as the air is injected on the horizon line to the pass line which is the oblique fall path of the wire coil 1, the cooling efficiency of the wire rod coil 1 can be maximized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

1: wire rod coil 21: top conveyor
22: Lower conveyor D: Upper and lower end section
110: blower driving means 111: blowing motor
112: blowing fan 210: air duct
211: rim (of the air duct) 220: air nozzle
221: stopper 310: pinion gear
320: drive cylinder 321: piston
322: Rack gear 330: Drive motor
331: motor shaft 332: screw bar
410: throttle plate 420: rotary motor
430: drive gear 441: first driven gear
442: Second driven gear

Claims (10)

A blowing fan driving means (110) for providing blowing power of air; And blowing guide means for blowing air to both side portions of the wire coil 1 dropping from the upper and lower end sections D between the conveyors so as to uniformly cool the wire coil 1, ≪ / RTI >
The air guiding means includes an air duct 210 extending to the side of the upper and lower end sections D,
Further comprising blowing-amount adjusting means provided in the air duct (210) to adjust a blowing amount of air,
The air blowing amount adjusting means includes a throttle plate 410 disposed in the air blowing path in the air duct 210 and adjusting the blowing amount of the air in the air duct 210 while rotating. And a rotation motor 420 coupled to the rotation axis of the adjustment plate 410 to rotate the adjustment plate 410,
The blowing amount adjusting means includes: a driving gear 430 mounted on a driving shaft of the rotating motor 420; A first driven gear 441 gear-connected to one side and the other side of the driving gear 430; And a second driven gear 442 which is gear-connected to the first driven gear 441 at one side of the driving gear 430. The control plate 410 is rotated in the opposite direction Is provided to the gear shafts of the first driven gear (441) and the second driven gear (442) on the other side of the drive gear (430).
The method according to claim 1,
Wherein the air-
And an air nozzle 220 inclined to the air duct 210 so as to correspond to the inclined fall path of the wire coil 1 in the upper and lower end section D,
And air is jetted on a horizontal line in a lateral direction from a pass line which is an oblique falling path of the wire-wound coil (1).
3. The method of claim 2,
The air nozzle 220 is rotated in the air duct 210 so as to adjust the spray angle of the air through the air nozzle 220,
Rotation driving means for rotating the air nozzle 220 in association with the air nozzle 220;
Further comprising: a first coil cooling device for cooling the wire coil cooling device.
The method of claim 3,
Wherein the rotation driving means comprises:
A pinion gear 310 provided on a side of the air nozzle 220; And
A drive member gear-coupled to the pinion gear 310 to rotate the pinion gear 310;
And a cooling device for cooling the wire coil.
5. The method of claim 4,
The driving member is a driving cylinder 320 in which a rack gear 322 is mounted on the piston 321,
Wherein the pinion gear (310) is formed such that a gear engaged with the rack gear (322) is protruded in parallel with the gear shaft.
5. The method of claim 4,
The driving member is a driving motor 330 in which a screw bar 332 is mounted on a motor shaft 331,
Wherein the pinion gear (310) is formed in a spiral shape so as to be gear-engaged with the screw bar (332).
The method of claim 3,
Wherein the air nozzle (220) has a cylindrical cross section and a stopper (221) protruding from the opening edge portion (211) of the air duct (210) is protruded so as to restrict the rotation angle.
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