KR20120010751A - Apparatus for Cooling Wire-rod Coil - Google Patents

Apparatus for Cooling Wire-rod Coil Download PDF

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Publication number
KR20120010751A
KR20120010751A KR1020100072287A KR20100072287A KR20120010751A KR 20120010751 A KR20120010751 A KR 20120010751A KR 1020100072287 A KR1020100072287 A KR 1020100072287A KR 20100072287 A KR20100072287 A KR 20100072287A KR 20120010751 A KR20120010751 A KR 20120010751A
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KR
South Korea
Prior art keywords
wire
roll
coil
diameter
wound
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KR1020100072287A
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Korean (ko)
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KR101259237B1 (en
Inventor
손일헌
신우기
황중기
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주식회사 포스코
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Priority to KR1020100072287A priority Critical patent/KR101259237B1/en
Publication of KR20120010751A publication Critical patent/KR20120010751A/en
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Publication of KR101259237B1 publication Critical patent/KR101259237B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/10—Arrangement or installation of feeding rollers in rolling stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B2045/0212—Cooling devices, e.g. using gaseous coolants using gaseous coolants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/18—Rolls or rollers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)

Abstract

PURPOSE: A cooling apparatus for a wire rod coil is provided to improve the quality of a wire rod coil by minimizing a contact of a cooling stand and the wire rod coil. CONSTITUTION: A cooling apparatus(1) for a wire rod coil comprises one or more blowing units and a diameter-variable wire rod transfer roll(10). The blowing units are arranged around a transfer path of a wire rod coil and blow air to the wire rod coil. The diameter-variable wire rod transfer roll transfers the wire rod coil to the blowing units and comprises one or more diameter varying units(30).

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 that minimizes contact between a wire coil wound and transferred in a wobble manner at a cooling stall for cooling the wire coil through air blowing, (Width direction) of a wire coil cooling apparatus, and ultimately to reduce a local microstructure or a variation in tensile strength due to a temperature deviation, thereby improving product quality.

In a typical wire rod production process, a billet is heated to approximately 1100 to 1200 ° C in a heating furnace, and the hot-rolled wire rod subjected to rough rolling, intermediate rough rolling, intermediate rolling and finishing rolling is cooled in a water- The wire coil is produced through the process and then put into the correction line. At this time, according to the rolling step, a small diameter wire rod having a diameter of 5.5 to 15 mm and a large diameter wire rod having a diameter of 15 to 42 mm will be produced.

In the case of such a small-diameter wire rod, if it is formed into a spiral coil shape through a laying head, heat treatment (cooling) is performed in parallel with the conveyance of the conveying device (conveying conveyor) And then the test line is inserted.

For example, FIG. 1 shows a manufacturing step of a small diameter wire rod. The material rolled in the rolling mill 110 is cooled by a water cooling base 120 cooled by cooling water, and the laying-head 130 And is wound continuously in a spiral manner while passing through.

The wire-wound coil 100 thus wound is successively placed and carried on the roller 142 of the conveying conveyor 140. The wire-wound coil is conveyed from the blowing unit 150 provided at the lower portion while passing through the conveying conveyor 140, (The arrow inside the duct 154 in Fig. 1).

Then, the wound wire coil 100 is dropped while being dropped on an accumulator 160 associated with the conveying conveyor.

1, the wire coil continuously wound in the form of a coil in the runner-head 130, which is a winding machine, is wound on the conveying roller 142 of the conveying conveyor 140 Air is blown from a blowing unit 150 provided at a lower portion of the conveying conveyor and blown air is brought into contact with the wire rod coil 100 to perform low temperature cooling of the wire rod coil A heat treatment of the wire coil is performed.

For example, the initial temperature of the wire rod coil 100 dropped by the feeding roller 142 while being wound by the laying head 13 is approximately 850 to 950 ° C., but the temperature of the wire rod coil cooled through the above- It falls to 150 ~ 300 ℃.

1 and 2, the blowing unit 150 includes a duct 154 provided at a lower portion of the blower b 152, and a feed roller 142 , That is, nozzles 156 for spraying air are disposed.

The cooling facility of the winding wire coil using such an air blowing unit 150 is referred to as a "stelmor cooling stelller ", and various cooling rates such as the wind power or the feeding speed of the wire rod coil 100, ≪ / RTI >

However, in the case of such a Stellmoor cooling rack, when it is transported in the form of a helical coil at the laying head 130 and dropped on the conveying roller 142 of the conveying conveyor 140 and conveyed, as shown in FIG. 2, (The portion A 'in FIG. 2), and the difference in the stacking density of the wire rods coiled in such a manner is larger than the (local) temperature deviation of the wire rods coil For example, as shown in FIG. 3B, a temperature difference of about 80 ° C. is generated.

2, the stacking density between the edge portion (portion A 'in FIG. 2) and the central portion of the wire coil 100 wound and transported on the conveying roller 142 of the conveying conveyor 140 is, for example, , It is known that a difference of about 2 to 4 times or more occurs.

In addition, there is a difference in cooling rate depending on the position (a racking environment), and the final microstructure varies, so that the tensile strength becomes nonuniform in the width direction. For example, a tensile strength of about 40 MPa It is known that tensile stress difference occurs.

Therefore, in order to obtain a uniform cooling rate for each position of the wire coil, it is necessary to increase the blowing speed of the edge portion of the wire coil having a high rack density or increase the blowing amount.

4, the induction wall 154a is formed on the inner edge side of the duct 154 of the air blowing unit 150 and the lower side of the induction wall 154a is formed on the inner side of the duct 154 of the air blowing unit 150. [ A damper 154b or a deflector 154b may be provided on the upper side of the wire coil to increase the blowing speed blowing to the edge of the wire coil having a high dense density or to increase the blowing amount, Thereby reducing the temperature deviation.

However, even in such a case, a uniform cooling rate in the width direction of the wire coil can not be effectively provided. For example, the blowing speed and blowing rate of the edge portion (A 'in FIG. 2) The influence of the blowing of the coils in a densely packed state is not large, and hot spots that are not cooled even when blowing are generated.

As a result, if the microstructure of the wire coil differs due to the cooling fluctuation of the wire coil, the additional heat treatment process becomes necessary, which increases the production cost.

Further, in order to reduce the temperature variation in the width direction of the wire-wound coil, although not shown in other drawings, the mist may be used for quenching the material, or air or air (Concentrated) injection method of cooling water or a method in which an additional damper is installed to concentrate the blowing air to the edge of the wire rod coil is known, but among other things, the facility is very complicated, and it is difficult to effectively solve the lateral temperature deviation In fact.

Accordingly, the applicant of the present invention has found that by improving the structure of the transport roll for transporting the wire coil, the contact itself of the wire coil transported on the roll can be reduced, and the temperature deviation in the width direction of the wire coil can be removed The invention has been proposed.

It is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to minimize the contact of a wire-wound coil wound and transferred in a wobble manner in a wire- And to provide a wire coil cooling apparatus which minimizes a temperature variation of a coil (width direction) and reduces local microstructure or tensile strength variation due to temperature deviation, thereby improving product quality.

In order to achieve the above-mentioned object, the present invention provides a wire-wound coil blowing unit provided with one or more windings around a feed path of a wire-wound coil to be wound and fed, And

A variable-diameter wire-wound coil transporting roll provided on the blowing unit so as to transport a wire-wound coil to be cooled, the wire-winding coil including at least one diameter variable portion;

And a wire coil cooling apparatus including the wire coil cooling apparatus.

Preferably, the wire-wound coil is wound in a wobble shape having a variable diameter, and is inserted into a feed roll. The diameter varying portion includes at least one stepped portion provided in the feed roll to correspond to a change in diameter of the wire- And a ring portion or a combination thereof.

More preferably, the diameter varying portion comprises: a curvature forming portion formed in the longitudinal direction of the roll; And

A first stepped portion formed outside the curvature forming portion;

As shown in FIG.

More preferably, the curvature forming portion is formed at the center of the roll, a flat portion is formed between the curvature forming portion and the first stepped portion, and the first stepped portion may be provided to the roll driving portion.

The diameter varying portion includes a minimum diameter portion on the center side of the wire-wound coil transporting roll; And

Second and third stepped portions provided outside the minimum diameter portion;

Lt; / RTI >

And a roll driver is provided outside the third step.

Preferably, the diameter varying portion includes a central minimum diameter portion of the integrated roll driving portion; And

Fourth and fifth steps provided outside the minimum diameter portion;

Wherein the fourth and fifth step portions are provided through protrusions formed by rings or integrally formed with different diameters to be assembled to the integrated roll driving portion and further a ventilation space is formed around the stepped portions.

More preferably, the wire-wound coil transport roll is configured to satisfy the following conditions: 0.05L <L1, L2, L2 ', L2 ", L5 <0.15L, 0.5D <D1 <0.8D, 30D <R <70D L2 is the length of the third step, L2 "is the length between the rings, L5 is the length of the second step, D is the length of the second step, L is the length of the second step, L is the length of the roll, D1 is the roll minimum diameter, and R can be the radius of curvature of the curvature forming portion.

According to such a wire-wound coil cooling apparatus of the present invention, it is possible to minimize the occurrence of hot spots, since it minimizes the contact between the wire-wound coils wound in a wobble manner at a cooling stall for cooling the wire- .

Accordingly, the present invention minimizes the temperature variation in the width direction of the center portion and the edge of the wire rod coil, thereby reducing the local microstructure or tensile strength variation due to the temperature variation, thereby improving the product quality .

1 is a schematic view showing a step of manufacturing a general (small-diameter) wire coil;
Fig. 2 is a schematic plan view showing the (Stellmore) cooling band of the wire coil in Fig. 1
FIGS. 3A and 3B are graphs showing the relationship between the rack density and the temperature deviation in the width direction of the wire coil when cooling the wire coil using the conventional cooling band
Fig. 4 is a schematic view showing adjustment of a blowing amount using a conventional damper and a deflector
5 is a plan view showing a wire-wound coil cooling apparatus according to the present invention
6 is a detailed view showing a multi-stage wire coil transfer roll of the wire-wound coil cooling apparatus of the present invention
7 is a perspective view showing another form of the wire coil transfer roll of the present invention.
Fig. 8 is a schematic view showing still another form of the wire coil transfer roll of the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

5 and 6 show a wire coil cooling apparatus 1 according to the present invention including the feed roll 10 of the first embodiment according to the present invention. In Figs. 7 and 8, , Three transfer rolls of the present invention.

Hereinafter, the blowing unit 150, which is included in the wire-wound coil cooling apparatus 1 of the present invention and cools the wire-wound coil fed through the feed roll through the blowing air, The same reference numerals will be used, and specific detailed configurations and operations will be briefly described in the present embodiment.

1, the wire-wound coil 100 to be cooled through the cooling device 1 of the present invention is wound around the forehead coil 130 in the form of a coil through the laying head 130, Lt; / RTI &gt;

In addition, in the wire-wound coil cooling apparatus 1 of the present invention, the wire-wound coil does not take up the coil of wire with the same diameter as shown in Fig. 2, but preferably controls the rotation speed of the laying head 130 (Refer to 100a 'to 100c' in Fig. 6) wound in a wobble manner to vary the diameter of the wire-wound coil wound in a spiral manner.

Therefore, the wire rod coil 100 'according to the present invention, which is wound and transported by the wobble method which is cooled through the wire rod coil cooling apparatus 1 of the present invention, is variable as the coil diameter gradually increases or decreases As a result, intensive contact (overlapping portion) at the corner portion of the wire coil to be fed at a low height as shown by "A" in FIG. 2 is somewhat reduced.

In other words, owing to the wobble type winding system of the wire-wound coil used in the wire-wound coil cooling apparatus of the present invention, the wire-wound coil of the present invention can basically have the same structure as that of the conventional wire- It is possible to reduce the temperature deviation in the wire coil edge portion to some extent, rather than coil cooling.

Particularly, in the case of the present invention, the temperature deviation of the wire coil is further eliminated through the feed roll described below, thereby maximizing the cooling efficiency of the wire coil transferred from the laying head 130 through the feed rollers between the collectors 160 Thereby maintaining optimal product quality.

5, the maximum diameter portion (see 100c 'in FIG. 6) of the wire rod coil 100' is about 1300 mm and the minimum diameter portion (see 100a 'in FIG. 5) Since the small diameter portion can be placed inside the large diameter portion in this case, the height of the coils at the time of binding after integration can be made to be longer than that of the wire coil 100 having the same diameter as in Fig. It also offers other advantages that make it possible to lower.

As shown in FIG. 5, one or more of the wire-wound coil cooling apparatuses 1 according to the present invention are arranged around a feed path of a wire-wound coil that is basically wound and fed through the laying head 130, And the wire-wound coil blowing unit 150 described with reference to Figs. 1 to 4, which enables cooling of the wire-wound coils.

Particularly, the wire-wound coil cooling apparatus 1 of the present invention is provided so as to transfer the coil of wire material to be cooled to the space between the blowing nozzles 156 of the unit duct 154 of the blowing unit 150 so as to feed the wire- And a diameter-variable wire-wound coil transport roll (10) comprising at least one diameter-variable portion.

That is, in the case of the wire-wound coil cooling apparatus 1 of the present invention, on the basis that the diameter of the wire-wound coil is gradually changed and the wire-shaped coil is wound in a wobble manner, (Interlayer) contact of the wire-wound coil 100 ', which is continuously spirally and spatially transported on the transport roll by the diameter-varying portions 30, 40 and 50, which will be described in detail with reference to Figs. 6 to 8 Minimize.

Therefore, the wire-wound coil cooling apparatus of the present invention suppresses the occurrence of hot spots due to wire-to-coil contact (particularly, the edge portion (see A 'in FIG. 2)) as described above, So that a variation in tensile strength due to a temperature deviation does not occur.

The diametrically variable portions 30, 40 and 50 included in the conveying roll 10 of the present invention as described above will be described in detail with reference to FIG. Or a stepped portion, a curvature forming portion, or a ring portion (protruding portion) or the like.

Next, Figs. 6 to 8 illustrate the first to third embodiments of the present invention in which wire-wound coils of different diameters are separated (separated) so as to minimize contact between coils during wire- Illustrative feed rolls.

5 and 6, the diameter changing portion 30 of the feed roll 10 according to the first embodiment of the present invention includes a curvature forming portion 32 formed in the longitudinal direction of the roll, And a first stepped portion 34 on the roll driving portion 12 formed on the outer side (both end portions) of the forming portion 32.

A flat portion 36 may be formed between the curvature forming portion 32 and the first step portion 34 (the roll driving portion 12).

Accordingly, the diameter of the first step 34 is reduced compared to the flat part 36, and thus the end of the maximum diameter part 100c 'of the wire coil 100' And then cooled further.

At this time, as shown in Fig. 6, in the feed roll of the first embodiment of the present invention, the curvature forming portion 32 is preferably formed to have the same length toward the outer side from the center of the roll, that is, The curvature forming portion 32 includes the concave portion on the cross section where the center portion becomes the minimum diameter portion D1 of the roll.

6, a minimum diameter portion 100a ', a middle diameter portion 100b' and a maximum diameter portion 100c 'of the wire rod coil 100' wound via the lifting head 130 in a wobble fashion 'Are respectively seated in the curvature forming portion 32 and the flat portion 36 with a height difference (clearance) by the concave portion of the curvature forming portion and the first step portion 34 connected to the flat portion, Thereby preventing the contact from occurring as much as possible.

At this time, the both-end roll driving unit 12 of the conveying roll 100 is connected to the roll driving unit (motor and coupling unit). Therefore, It is preferable that the diameter is larger than the minimum diameter portion D1 of the center portion.

6, the maximum diameter portion (for example, 1300 mm) 100c 'of the wire rod coil 100' wound and transferred in the wobble manner has a flat portion (not shown) 36 and the intermediate diameter portion 100b 'and the minimum diameter portion 100a' of the wire coil are sequentially brought into contact with the edge portion of the curvature forming portion 32 and the most concave portion of the center And therefore, in the present invention, the contact of the wire coil is suppressed as much as possible.

When the roll diameter is decreased by the first stepped portion 34, the space formed by the maximum diameter portion 100c 'of the wire rod coil is increased to improve the air permeability, Thereby improving the cooling effect.

6, the feed roll 10 of the first embodiment of the present invention preferably satisfies the conditions of 0.05L <L1, L2 <0.15L, 0.5D <D1 <0.8D, and 30D <R <70D .

L1 is the length of the flat portion 36 and the roll driving portion 12, D1 is the diameter of the minimum diameter portion concaved toward the center of the curvature forming portion 32, Is the diameter of the roll driver 12, and R is the radius of curvature of the curvature forming portion.

Since the diameter D of the roll driving unit 12 is the portion to which the driving force is transmitted as described above, it is required to be larger than the minimum diameter portion D1 of the curvature forming portion, and the minimum diameter portion and the intermediate diameter portion 100a ' The curvature forming portion 30 on which the curved portion 100b 'is placed is not preferable because it becomes almost flat when it is too large.

For example, when the length L2 of the first stepped portion 34 (the roll driving portion 12) and the length L2 of the flat portion 36 on which the maximum diameter portion 100c ' For example, if L1 is less than 0.05L, the length of the first step (roll driving part) is too short, so there is little cooling effect on the edge of the wire rod coil portion, The roll edge portion (roll driving portion) 12 is excessively increased in length to excessively amplify the blowing region at the edge of the wire coil using the damper or the deflector as shown in Fig. 4, Will be difficult to concentrate.

If the length L2 of the flat portion 36 is out of the range of 0.05L < L2 < 0.15L, if the radius is too small, the radius of the curvature forming portion actually starts directly at the roll driving portion 12, And it is an obstacle in binding and packaging of the final wire coil.

Conversely, if L2 is excessively large beyond this range, the maximum diameter portion of the roll will increase, which will increase the overall weight of the roll and ultimately increase the roll production cost.

In addition, when the diameter D1 of the center-side minimum diameter portion of the curvature forming portion 32 is smaller than 0.5D <D1 <0.8D, the curvature forming portion 32 has the roll rotation axis portion connecting the both- Therefore, it is difficult to maintain the rigidity of the proper roll for supporting the load of the wire-wound coil to be seated. On the other hand, if it is excessively larger than the above range, there arises a problem of increasing the roll own weight, When applied, it will make it difficult to install it in combination with existing peripheral equipment.

It is preferable that the curvature radius R of the curvature forming portion 32 satisfies the condition of 30D < R < 70D. For example, when the radius of curvature is out of the above range, The minimum diameter portion 100a 'and the intermediate diameter portion 100b' of the wire coil may be set to a value smaller than the above range, The gap between the teeth is excessively formed, which may cause difficulty in winding and binding or packaging of the wire coil, or excessively heightening the wire coil coil height.

For example, in this embodiment, for example, the total length L of the roll is about 1300 mm, the lengths L1 and L2 of the flat portion 36 and the roll driving portion 12 may be 130 mm, and the minimum diameter D1 of the curvature- And the diameter D of the roll driving unit 12 may be about 100 mm. The curvature radius R of the curvature forming portion is preferably about 5400 mm.

When the feed roll 10 is provided under such a condition as shown in FIG. 6, the interlayer contact of the wire coil is cut off as shown in FIG. 6, so that the temperature variation in the width direction of the wire coil can be minimized. It is possible to reduce the deviation from the conventional 40 MPa to 23 MPa shown in FIGS. 1 and 2.

Next, Fig. 7 shows the transport roll 10 of the second embodiment according to the present invention.

7, the feed roll 10 of the second embodiment of the present invention is preferably such that the diameter varying portion 40 is located between the minimum diameter portion 42 on the center side of the wire- And second and third stepped portions 44 and 46 provided outside the minimum diameter portion 42 to form the roll driving portion 12 outside the third stepped portion.

Therefore, the minimum diameter portion (42) and the second and third stepped portions (44, 46) of the diameter varying portion (40) of the feed roll of the present invention shown in Fig. Since the contact between the wire rods is blocked as much as possible, and the temperature deviation of the wire rods is reduced (see Fig. 6), since the wire rods 100a ', 100a', 100b 'and 100c' .

In this case, the dimensions of the components 42, 44 and 46 of the diameter varying portion of the transport roll in FIG. 7 are 0.05L <L1, L2 ', L5 <0.15L, 0.5D <D1 <0.8 It is preferable that the condition of D is satisfied.

For example, L is the total length of the roll, and L1, L2 ', and L5 are the lengths of the roll drive 12, the third step 46 and the second step 44, respectively, The minimum diameter portion 100a 'and the intermediate diameter portion 100b' of FIG. 6) and the maximum diameter (100a 'in FIG. 6) of the wire coil wound in the wobble manner are preferably formed under the same conditions, (100c 'in FIG. 6) are respectively seated on the minimum diameter portion 42, the second step portion 44 and the third step portion 46 of the diameter varying portion 40 of the present invention, do.

As described above, it is preferable that the diameter D1 of the minimum diameter portion 42 satisfies the condition of 0.5D < D1 < 0.8D. This is for maintaining the rigidity of the roll and stably transferring the coil, The reasons are as described above.

On the other hand, the minimum diameter portion 42 and the second and third stepped portions 44 and 46 of the present invention may be formed as protruding portions and concave portions substantially through the processing of rolls.

6 is required for precise machining of the curvature forming portion. However, in the case of the conveying roll having the best-diameter portion 42 of the present invention in Fig. 7, the conveying roll having the curvature forming portion in Fig. Precision manufacturing of the roll is not necessary, so that the production of the roll will be facilitated.

In this case, in FIG. 7, L4 is the length of the minimum diameter portion, and L3 may be the same length as the length of the curvature forming portion of FIG. However, the reason for the above condition is understood to be that described in Fig.

Next, at 8, the feed roll 10 of the third embodiment according to the present invention is shown.

That is, the diameter variable portion 50 included in the transport roll of the present invention shown in Fig. 8 has the central minimum diameter portion 52 and the minimum diameter portion 52 of the integrated roll driving portion 12 ' (54) and (56) provided on the outer side of the base portion (52).

The fourth and fifth stepped portions 54 and 56 of the diameter varying portion 50 of the feed roll of the present invention as shown in FIG. 8 have the ring 14 16 can be assembled and provided, and these rings 14, 16 can be assembled as a key not shown as a separate symbol in the integrated roll driver 12 '. Of course, it is also possible to provide, in place of the ring, a protruding portion which is integrally formed and processed in the roll driving portion.

8, a ventilation space S1, which is a space formed between the wire-wound coil and the roll surface around the fourth and fifth stepped portions 54 and 56 of the diameter varying portion 50, (S2) can be formed, which will further improve the cooling property at least at the intermediate diameter portion 100b 'and the end portion of the maximum diameter portion 100c' of the wire coil 100 '.

That is, the diameter variable portion included in the feed roll of the present invention shown in Fig. 8 improves the cooling efficiency of the edge portion of the wire coil as much as possible.

8, the minimum diameter portion 100'a, the intermediate diameter portion 100b ', and the maximum diameter portion 100b' of the wire rod coil wound and transferred in the wobble manner through the transfer roll of the third embodiment of the present invention The first and second stepped portions 100c 'can be seated and spaced apart without contacting each other at the smallest diameter portion 52 and the fourth and fifth stepped portions 54 and 56 of the variable diameter portion 50, Thereby suppressing the occurrence of a temperature variation caused by the temperature change.

Particularly, as described above, since the middle diameter portion and the maximum diameter portion of the wire rod coil seated on the fourth and fifth step portions 54 and 56 are exposed at the end portions of the air flow spaces S1 and S2, Thereby maximizing the cooling efficiency in the portion.

At this time, as shown in FIG. 8, it is preferable that the specifications of the respective portions 52, 54, and 56 of the diameter varying portion satisfy the conditions of 0.05L <L1 and L2 "<0.15L as described above , L1 is the length of the roll drive and L2 "is the spacing between the rings. And, since it is the integral roll driving unit 12 ', the diameter is the same as D in the longitudinal direction.

6 and 7, the same conditions as described above are required, and L2 "is set to the same condition as L2 and L2 'of Figs. 6 and 7 , And the specific reason thereof will be briefly described in the foregoing.

8, the fourth and fifth step portions 54 and 56 of the roll diameter varying portion 50 are formed by the rings 14 and 16 assembled to the integral roll driving portion 12 ' 6 and 7, the roll processing amount is the smallest, and therefore, the roll production will be facilitated. In particular, the fourth, fifth, It will also facilitate adjustment of the interval (length) of the five steps.

In particular, as described above, since the ventilation spaces S1 and S2, which are spaces between the roll surfaces, are provided around the fourth and fifth steps, it will be possible to ensure the cooling property of the wire coil edge.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention, It will be appreciated that those skilled in the art will readily understand the present invention.

1 .... wire coil cooling device 10 .... diameter variable feed roll
12, 12 ' .... &lt; / RTI &gt;
30, 40, 50 .... diameter varying portion 32 of the roll .... Curvature forming portion
34 .... first step 36 .... flat part
42,52 .... minimum diameter part 44,46 .... second and third step part
54,56 .... Steps 4,5

Claims (7)

A wire-wound coil blowing unit provided in the vicinity of a feed path of a wire-wound coil to be wound and fed, the blow-off unit comprising a blowing unit for blowing a cooling medium, And
A variable-diameter wire-wound coil transporting roll provided on the blowing unit so as to transport a wire-wound coil to be cooled, the wire-winding coil including at least one diameter variable portion;
Wherein the coil cooling apparatus comprises: The method according to claim 1,
The wire-wound coil is wound in a wobble shape having a variable diameter,
Wherein the diameter varying portion is configured by at least one stepped portion provided in the conveying roll and one or both of the curvature forming portion and the ring portion so as to correspond to the diameter change of the wire coil. 3. The method of claim 2,
Wherein the diameter varying portion comprises: a curvature forming portion formed in the longitudinal direction of the roll; And
A first stepped portion formed outside the curvature forming portion;
Wherein the coil cooling apparatus comprises: The method of claim 3,
Wherein the curvature forming portion is formed at a center of the roll, a flat portion is formed between the curvature forming portion and the first stepped portion, and the first stepped portion is provided as a roll driving portion. 3. The method of claim 2,
The diameter varying portion includes a minimum diameter portion on the center side of the wire-wound coil transporting roll; And
Second and third stepped portions provided outside the minimum diameter portion;
Lt; / RTI &gt;
And a roll driving unit is provided outside the third step portion. 3. The method of claim 2,
Wherein the diameter varying portion comprises: a central minimum diameter portion of the integral roll driving portion; And
Fourth and fifth steps provided outside the minimum diameter portion;
Wherein the fourth and fifth step portions are provided through protrusions formed by rings or integrally formed with different diameters to be assembled to the integrated roll driving portion and further formed with a ventilation space around the stepped portion. Cooling device. 7. The method according to any one of claims 3 to 6,
The wire coil transfer roll is configured to satisfy the following conditions: 0.05L < L1, L2, L2 ', L2 &quot;, L5 < 0.15L, 0.5D & L1 is the length of the roll driving part, L2 is the length of the roll flat part, L2 'is the length of the third step, L2 "is the length between the rings, L5 is the length of the second step, D is the diameter of the roll driving part, D1 is the roll minimum diameter, and R is the radius of curvature of the curvature forming portion.
KR1020100072287A 2010-07-27 2010-07-27 Apparatus for Cooling Wire-rod Coil KR101259237B1 (en)

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