KR101663948B1 - Apparatus for damping strip sway - Google Patents

Apparatus for damping strip sway Download PDF

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Publication number
KR101663948B1
KR101663948B1 KR1020150174368A KR20150174368A KR101663948B1 KR 101663948 B1 KR101663948 B1 KR 101663948B1 KR 1020150174368 A KR1020150174368 A KR 1020150174368A KR 20150174368 A KR20150174368 A KR 20150174368A KR 101663948 B1 KR101663948 B1 KR 101663948B1
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KR
South Korea
Prior art keywords
strip
pinch roll
roll
block
vibration
Prior art date
Application number
KR1020150174368A
Other languages
Korean (ko)
Inventor
황선주
Original Assignee
주식회사 포스코
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Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR1020150174368A priority Critical patent/KR101663948B1/en
Application granted granted Critical
Publication of KR101663948B1 publication Critical patent/KR101663948B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/007—Control for preventing or reducing vibration, chatter or chatter marks
    • 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
    • B21B39/006—Pinch roll sets
    • 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
    • B21B45/004—Heating the product
    • 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)

Abstract

Disclosed is a strip vibration reducing device capable of easily and rapidly reducing or removing vibration on a strip generated by the movement of a strip welding unit when annealing and passing the strip. The disclosed strip vibration reducing device according to the present invention, as the device for reducing the vibration on the strip passing through a target facility, includes: at least one deflect roll installed to be able to rotate in an internal strip transfer passage of the target facility; a pinch roll block arranged to resolve around the deflector roll and reducing or removing the vibration on the strip by coming into contact with the strip; and a rotary block connected to the pinch roll block and enabling the pinch roll block to resolve around the deflector roll.

Description

[0001] Apparatus for damping strip sway [0002]

More particularly, the present invention relates to an annealing apparatus and method for preventing strip surface defects and equipment wear and deformation caused by strip vibrations caused by thickness variations before and after a weld between strips during high- And more particularly,

Generally, in the cold rolling process, a cold rolled steel sheet coil having a thickness of 2 mm or more is cold-rolled and then subjected to primary processing with a thin sheet coil having a thickness of 1 mm or less and then subjected to annealing, Process and so on.

Here, in the course of these processes, in order to allow the coil to be inserted and work, the coil strip must be supplied continuously in the process input portion continuously. Accordingly, in the cold rolling process, a strip welding operation is performed to connect the front end portion of the next coil strip to the rear end portion when the operation for one coil strip is completed. Particularly, in the annealing process, Work is done.

Conventionally, in order to prevent the vibration of the strip, an appropriate tension is given based on the welded portion between the strips in performing the annealing work at a high speed.

However, even if the appropriate tension is applied to the strip, vibration may occur in the strip due to the change of the tension reference set value according to the thickness variation before and after the weld between the strips. Such vibration may cause vibration of the strip moving at high speed Which eventually leads to defects in the strip itself, as well as to vibrations in the peripheral equipment, resulting in wear and deformation of the cold rolling facility located after the annealing process. That is, in the conventional annealing work, the generation of vibration due to the movement of the strip weld causes various problems such as the occurrence of surface defects on the strip as well as the damage due to the vibration of the equipment.

As shown in FIGS. 1 and 2, a plurality of pinch rolls 22 are installed in advance in a region where the strip vibration can be generated, and then the deflector roll 10 is mounted on the separator roll 10, The worker closes the pinch roll 22 provided in the area to reduce or remove the strip vibration.

However, conventionally, in order to remove or prevent the strip vibration, it is necessary to separately manage a plurality of pinch rolls. Therefore, it is necessary to separately operate the complicated switch functions for each pinch roll operation, there was.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a strip vibration reducing device capable of quickly and easily reducing or eliminating strip vibrations, The present invention has been made in view of the above problems.

It is another object of the present invention to provide a strip vibration reduction device that can simplify facility management for strip vibration reduction.

It is another object of the present invention to provide a strip vibration reducing device capable of preventing equipment damage caused by strip vibration by quickly and easily removing strip vibration.

According to an aspect of the present invention, there is provided an apparatus for reducing vibrations of a strip passing through a target facility, the apparatus comprising: One separator roll; A pinch roll block disposed to revolve around the periphery of the separator roll, the pinch roll block contacting the strip and reducing or eliminating vibrations generated in at least the strip; And a rotation block connected to the pinch roll block to allow the pinch roll block to revolve the periphery of the separator roll.

In another embodiment, the pinch roll block includes a pinch roll having an elongated rod shape having a length similar to that of the deformer roll, the pinch roll being revolved by the rotating block and contacting the strip; And a linkage installed on both sides of the pinch roll to extend outwardly and the other end opposite to one end connected to the side of the pinch roll is coupled with the rotation block.

In a strip vibration reducing apparatus according to another embodiment, the rotating block includes: a guide having an inner accommodating space and having a fixing hole; A first rotary gear disposed in a housing space of the guide; A cylinder coupled to a connecting rod of the pinch roll block and the first rotating gear; A second rotary gear arranged to mesh with the first rotary gear; And a driving motor coupled to the second rotary gear.

Further, the rotating block may include a shaft installed to penetrate through the fixing hole of the guide and the first rotating gear and rotate according to the rotation of the first rotating gear, the shaft connecting the first rotating gear and the cylinder; And a drive shaft connecting between the second rotary gear and the drive motor.

In a strip vibration reduction device according to another embodiment, the guide may have a " C "shape having three sides opened and including a front plate and a rear plate, and a fixing hole may be provided in each of the front plate and the rear plate have.

In a strip vibration reducing apparatus according to another embodiment, the rotating block includes: a gear lining disposed on each of both sides of the first rotating gear; And a drive bearing disposed on each of both sides of the second rotary gear.

The strip vibration reducing apparatus according to another embodiment may further include an encoder attached to the driving motor to measure a revolving amount of the pinch roll.

In the strip vibration reduction apparatus according to another embodiment, the guide, the cylinder, the shaft, and the first rotary gear of the rotary block may be installed on both sides of the separator roll.

In a strip vibration reduction apparatus according to another embodiment, the target facility may include an annealing furnace for heat treating the strip.

According to the present invention, in order to reduce the strip vibration, not a method of installing a plurality of pinch rolls and operating each pinch rolls separately, but rather a method of installing and operating one pinch roll around the separator roll, Thereby reducing strip vibration in the substrate.

Therefore, when the strip vibration reduction device according to the present invention is used, the strip vibration reduction operation can be performed easily and quickly. Furthermore, since only one pinch roll is operated, facility management can be simplified.

In addition, when the strip vibration reducing apparatus according to the present invention is used, it is possible to prevent the occurrence of coil surface defects due to the coil strip vibration, and also to effectively prevent the breakage of peripheral equipment.

1 is a schematic view showing a conventional annealing work.
2 is an enlarged view of the portion "A" of Fig.
3 is a perspective view showing a strip vibration reducing apparatus according to an embodiment of the present invention.
4 is a plan view of the strip vibration reduction device shown in Fig.
5 is an exploded perspective view for explaining a rotating block of the strip vibration reducing apparatus shown in Fig.
6 to 8 are schematic views for explaining the operation of the strip vibration reduction device according to the embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, the shapes and thicknesses of the components in the respective drawings may be exaggerated for clarity of description of the present invention, and the same members in the drawings are given the same reference numerals. It should also be noted that while the description of the present invention has been made publicly known, it is not described herein to avoid confusion in the description of the present invention.

In the embodiments of the present invention, the target facility is described as an annealing furnace. However, the present invention is not limited to this, and it is also possible to apply the present invention device to a deflector roll of another facility that adjusts the moving path of an advancing strip .

3 to 5 are views for explaining a strip vibration reduction apparatus according to an embodiment of the present invention, wherein FIG. 3 is a perspective view of a strip vibration reduction apparatus according to an embodiment, and FIG. 4 is a perspective view of a strip vibration Fig. 5 is an exploded perspective view for explaining the rotating block of the strip vibration reducing device according to the embodiment. Fig.

As shown, a strip vibration reduction apparatus 100 according to an embodiment may include a deflector roll 110, a pinch roll block 120, and a rotation block 130. In addition, the strip vibration reduction apparatus 100 according to the embodiment may further include an encoder 160. [

The separator roll 110 may be rotatably installed on a moving path of the strip 102 in a target facility, for example, an annealing furnace where an annealing process is performed. For example, the diffuser roll 110 may be rotatably installed in a portion between an Slow Cooling Section (SCS) and a RCS (Roll Cooling Section) in the annealing furnace, Having a width (or length) greater than the width of the substrate W.

The diffuser roll 110 may include a bearing block 112 that is assembled with a roll shaft. Further, although not shown in detail, the separator roll 110 may further include a support member and the like, which are assembled with the bearing block 112 and connected to the bottom of the annealing furnace, the ceiling, and the like. That is, the separator roll 110 including the bearing block 112 may be supported on a support member and installed on the floor or ceiling inside the annealing furnace.

The pinch roll block 120 may include a pinch roll 122 and links 124. The pinch rolls 122 may be provided in an elongated bar shape as a substantial constitution for reducing the vibration generated in the coil strips 102. In an embodiment, one pinch roll 122 is provided and may be disposed in parallel to the separator roll 110 with a length similar to the width of the separator roll 110. The connecting rods 124 may be installed outwardly on each of both sides of an elongated rod shaped pinch roll 122 which is connected to one end of the pinch roll 122, And the other ends may be respectively connected to the cylinders 134 of the rotation block 130, which will be described later.

The rotation block 130 is provided to allow the pinch roll 122 to revolve (or rotate) the periphery of the separator roll 110 and includes a guide 132, a shaft 133, a cylinder 134, 1 and second rotating gears 136-1 and 136-2, a driving motor 138, and a driving shaft 139. [ In addition, the rotation block 130 may include a pair of gear lining 137-1 and a pair of drive bearings 137-2.

In detail, the guide 132 is provided for stable engagement between the fixing of the first rotary gear 136-1 and the cylinder and the drive motor 138, and as shown in Figs. 3 and 5, And has a receiving space in which the first rotating gear 136-1 is inserted and disposed, and includes a fixing hole H in each of the front plate and the rear plate, . The fixing holes H are arranged in a line between the front plate and the rear plate of the " C "-shaped guide 132 so that the shaft 133 can be inserted and fixed. Alternatively, the guide 132 may be provided in various forms within a range in which the first rotation gear 136-1 can be inserted.

The shaft 133 may have an elongated rod shape having a thread on the surface thereof and one end thereof is engaged with the cylinder 134 and the other end portion thereof opposite to the one end is passed through the fixing hole H of the guide 132, And may be fixed to the guide 132 through the first rotary gear 136-1 including the pair of gear lining 137-1. The shaft 133 may serve to fix the cylinder 134 and to transmit the rotation transmitted from the drive motor 138 to the cylinder 134. [ Although not explicitly shown, the shaft 133 may be coaxially assembled with the bearing block 112 of the separator roll 110.

The cylinder 134 is provided to rotate the pinch roll 132 including the connecting rod 124 in a desired direction and is connected to the other ends of the connecting rods 124 provided on both sides of the pinch roll 122 Can be installed.

The first rotary gear 136-1 may be a pinion gear. The first rotation gear 136 is disposed in the receiving space of the guide 132 and the shaft 133 is inserted through the fixing hole H of the guide 132 to be rotatable in the guide 132 Lt; / RTI > At this time, the first rotary gear 136-1 can be coupled with the shaft 133 in a state where the gear lining 137-1 is disposed on each of both sides of the first rotary gear 136-1.

The second rotary gear 136-2, like the first rotary gear 136-1, may be a pinion gear, and is arranged to be engaged with the first rotary gear 136-1. Although not shown in detail, the second rotary gear 136-2 may be rotatably fixed to a part of the guide 132, and may be fixed by a drive motor 138 including a drive shaft 139, . At this time, the second rotary gear 136-2 may be coupled to the drive shaft 139 with the drive bearings 137-2 disposed on both sides thereof.

Here, it is understood that the pair of gear lining 137-1 and the pair of drive bearings 137-2 are installed to prevent the inflow of external heat and foreign matter.

The drive motor 138 may be coupled to a second rotary gear 136-2 including a pair of drive bearings 137-2 via a drive shaft 139. [ The drive motor 138 may be a rotary motor, which is widely used in ordinary facilities. In the present embodiment, a detailed illustration and description thereof will be omitted. The drive motor 138 can be fixedly installed in the annealing equipment by a plurality of fixing bolts. The drive shaft 139 has an elongated bar shape and has one end coupled to the drive motor 138 and the other end opposite to the one end connected to the second rotation gear 136-2 including a pair of drive bearings 137-2 .

In the strip vibration reducing apparatus 100 according to the embodiment of the present invention, the connecting rod 124 of the pinch roll block 120, the guide 132 of the rotating block 130, the shaft 133, the cylinder 134 And the first rotating gear 136-1 may be installed on both sides of the separator roll 110. [ 4, a guide 132 including a first rotary gear 136-1 and a cylinder 134 including a shaft 133 are provided on the left and right sides of the diffuser roll 110, respectively, The pinch rolls 122 may be connected to the connecting rods 124 on both sides.

On the other hand, the second rotary gear 136-2 is provided so as to be engaged with only one of both sides of the separator roll 110, for example, the first rotary gear 136-1 installed on the right side, The drive motor 138 including the drive shaft 139 may be installed only in the second rotary gear 136-2 disposed on the right side of the separator roll 110. [

Although not shown in detail, the strip vibration reducing apparatus 100 according to the embodiment of the present invention may be constructed such that the separator roll 110 and the guide 132 are assembled together so that the pinch roll 122 (including the cylinder 134) Can be stably rotated. On the other hand, the rotation block 130 is installed so as not to interfere with rotation of the separator roll 110 including the bearing block 112 and the support member.

The encoder 140 is coupled to the rear end of the drive motor 138 to measure the revolving amount of the pinch roll 122. Therefore, the strip vibration reduction apparatus 100 according to the embodiment can detect the revolving amount of the pinch roll 122 according to the installation of the encoder 140, So that the strip vibration can be rapidly reduced and / or eliminated.

Hereinafter, the operation of the strip vibration reduction apparatus according to the embodiment of the present invention will be described with reference to FIGS. 6 to 8. FIG.

FIG. 6 shows a case where the strip 102 is free of vibration or negligibly small, and the pinch roll 122 may be located under the separator roll 110. FIG. That is, the pinch roll 122 may be disposed at a position where it is not in contact with the strip 102.

Next, for example, when vibration is generated in the strip 102 portion on the right side of the separator roll 110, as shown in FIG. 7, the operation of the drive motor 138 causes the cylinder 134 to counterclockwise The pinch roll 122 is moved to the right side of the deflector roll 110. [ Then, the moved pinch roll 122 is brought into contact with the strip 102 portion on the right side of the separator roll 110, whereby the strip vibration at this portion is reduced or eliminated. At this time, the degree of movement of the pinch roll 122 to the right side of the separator roll 110 is appropriately adjusted in accordance with the magnitude of the vibration of the strip 102 through the encoder 140 provided at the rear end of the drive motor 138.

Conversely, when vibration occurs in the strip 102 on the left side of the separator roll 110, the cylinder 134 is revolved clockwise through the operation of the drive motor 138 as shown in FIG. 8 The pinch roll 122 is moved to the left side of the separator roll 110. Then, the moved pinch roll 122 is brought into contact with the strip 102 portion on the left side of the separator roll 110, whereby the vibration of the strip 102 at this portion is reduced or eliminated. Likewise, the degree of movement of the pinch roll 122 can be adjusted appropriately to the magnitude of the vibration of the strip 102 using the encoder 140.

As described above, according to the present invention, the pinch roll is allowed to revolve around the separator roll while one pinch roll is installed, so that the vibration of the strip can be stabilized easily and quickly. In addition, since the strip vibration reduction apparatus of the present invention requires only one pinch roll, it is possible to simplify the equipment. In addition, when the strip vibration reducing apparatus according to the present invention is used, the strip vibration can be quickly reduced and / or eliminated, thereby preventing self-defects of the strip as well as failure and damage of peripheral equipment, As shown in FIG.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be readily apparent to those skilled in the art that the present invention can be modified and changed without departing from the scope of the present invention.

100: strip vibration reducing device 102: strip
110: Dipter roll 112: Bearing block
120: pinch roll block 122: pinch roll
134: connecting rod 130: rotating block
132: guide 133: cylinder fixing shaft
134: cylinder 136-1: first rotary gear
136-2: Second rotary gear 137-1: Gear lining
137-2: drive bearing 138: drive motor
139: drive shaft 140: encoder

Claims (9)

An apparatus for reducing vibration of a strip passing through a target facility,
At least one deflector roll rotatably mounted on a path of movement of the strip in the target facility;
A pinch roll block disposed to revolve around the periphery of the separator roll, the pinch roll block contacting the strip and reducing or eliminating vibrations generated in at least the strip; And
A rotating block connected to the pinch roll block to cause the pinch roll block to revolve the periphery of the separator roll;
The strip vibration reduction device comprising: 2. The apparatus of claim 1, wherein the pinch roll block
A pinch roll having an elongated rod shape having a length similar to that of the deformer roll, the pinch roll being revolved by the rotating block and contacting the strip; And
A connecting rod installed on both sides of the pinch roll and extending outwardly from the pinch roll, the other end of the pinch roll being opposite to the one end connected to the side of the pinch roll,
The strip vibration reduction device comprising: 3. The apparatus of claim 2, wherein the rotating block
A guide having an internal accommodation space and having a fixing hole;
A first rotary gear disposed in a housing space of the guide;
A cylinder coupled to a connecting rod of the pinch roll block and the first rotating gear;
A second rotary gear arranged to mesh with the first rotary gear; And
A driving motor coupled to the second rotary gear;
The strip vibration reduction device comprising: The method of claim 3,
A shaft installed to penetrate the fixing hole of the guide and the first rotating gear and rotate in accordance with the rotation of the first rotating gear, the shaft connecting the first rotating gear and the cylinder; And
A drive shaft connecting the second rotary gear and the drive motor;
Further comprising: a strip vibration reducing device for reducing vibrations of the strip. The method of claim 3,
Wherein the guide includes a front plate and a rear plate and has a " C "shape having three open sides, and each of the front plate and the rear plate has a fixing hole. 4. The apparatus of claim 3, wherein the rotating block
A gear lining disposed on each of both sides of the first rotary gear; And
A drive bearing disposed on each of both sides of the second rotary gear;
Further comprising: a strip vibration reducing device for reducing vibrations of the strip. The method of claim 3,
Further comprising an encoder attached to the driving motor to measure a revolving amount of the pinch roll. 5. The method of claim 4,
Wherein the guide, the cylinder, the shaft and the first rotary gear of the rotary block are installed on both sides of the separator roll. 9. The method according to any one of claims 1 to 8,
Wherein the object facility comprises an annealing furnace for heat treating the strip.
KR1020150174368A 2015-12-08 2015-12-08 Apparatus for damping strip sway KR101663948B1 (en)

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KR1020150174368A KR101663948B1 (en) 2015-12-08 2015-12-08 Apparatus for damping strip sway

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KR1020150174368A KR101663948B1 (en) 2015-12-08 2015-12-08 Apparatus for damping strip sway

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0523481U (en) * 1991-09-10 1993-03-26 新日本製鐵株式会社 Electric heating device
JPH05186837A (en) * 1992-01-10 1993-07-27 Kobe Steel Ltd Method for preventing heat buckle of strip in continuous annealing furnace
JPH09271826A (en) * 1996-04-10 1997-10-21 Nippon Steel Corp Deflector roll equipment of metal sheet treatment line
JP2003113459A (en) * 2001-07-30 2003-04-18 Mitsubishi Heavy Ind Ltd Apparatus and method for correcting form of steel sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0523481U (en) * 1991-09-10 1993-03-26 新日本製鐵株式会社 Electric heating device
JPH05186837A (en) * 1992-01-10 1993-07-27 Kobe Steel Ltd Method for preventing heat buckle of strip in continuous annealing furnace
JPH09271826A (en) * 1996-04-10 1997-10-21 Nippon Steel Corp Deflector roll equipment of metal sheet treatment line
JP2003113459A (en) * 2001-07-30 2003-04-18 Mitsubishi Heavy Ind Ltd Apparatus and method for correcting form of steel sheet

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