KR20090025616A - Automatic grinding device for run out table - Google Patents

Automatic grinding device for run out table Download PDF

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Publication number
KR20090025616A
KR20090025616A KR1020070090597A KR20070090597A KR20090025616A KR 20090025616 A KR20090025616 A KR 20090025616A KR 1020070090597 A KR1020070090597 A KR 1020070090597A KR 20070090597 A KR20070090597 A KR 20070090597A KR 20090025616 A KR20090025616 A KR 20090025616A
Authority
KR
South Korea
Prior art keywords
polishing
sandpaper
jig
polishing jig
feed roll
Prior art date
Application number
KR1020070090597A
Other languages
Korean (ko)
Inventor
김상길
이경미
이봉선
Original Assignee
주식회사 포스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR1020070090597A priority Critical patent/KR20090025616A/en
Publication of KR20090025616A publication Critical patent/KR20090025616A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/10—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/37—Single-purpose machines or devices for grinding rolls, e.g. barrel-shaped rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/04—Hand tools or other devices for non-rotary grinding, polishing, or stropping resilient; with resiliently-mounted operative surface

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

An automatic polishing device of a run out table is provided to reduce the damage of the push roll by absorbing the impact of the push roll and polishing device while polishing. An automatic polishing device of a run out table comprises: polishing unit(70) which is up and down on a push roll(16) of the run out table; a table(42) including the polishing unit and supporting the polishing unit with the winch wire(44); a abrasive member surrounding the surface of the polishing unit in order to polish a push roll; a winch beam making the polishing unit go toward and backward to horizontal direction on the table; a winch drum(45) moving the polishing unit to top and bottom in the table to the push roll direction; and a controller controlling the polishing unit move back, up and down.

Description

Automatic grinding device for run out table

The present invention relates to an automatic polishing device for a run out table in a hot rolling process, and to an automatic polishing device for a run out table that improves the surface quality of a strip and improves work productivity by always cleaning the surface of the feed roll of the run out table. It is about.

In general, hot rolling refers to a steel slab manufactured in a performance factory, which is loaded into a heating furnace and heated and cracked to a rollable temperature in a hot rolling process to obtain an optimal temperature for making a product. It is sandwiched between two rolls, and the gap between rollers is gradually narrowed to form a thinner or thinner by applying continuous force.

In this rolling process, a strip is placed on a runout table consisting of a plurality of transfer rolls for transporting the strip, and a method of transferring the strip by rotating the transfer roll is used. However, when foreign matter is attached to the surface of the transfer roll or scratches are generated, the defect of the transfer roll is printed on the lower surface of the strip, which is a rolled material, can cause a strip surface defect. In order to solve such a problem, in order to remove the flaw which arose on the surface of the run-out table roller in each process, the grinding stone or the grinding tool is produced and used.

The automatic polishing apparatus of the run out table used in the conventional rolling process places an abrasive jig for polishing the transfer roll on the run out table, hangs the abrasive jig on the hook of the overhead crane, and then rotates the transfer roll. It was configured to be polished by the friction of the surface of the transfer roll and the polishing jig fixed by the overhead crane.

However, the automatic polishing device of the run out table as described above requires the preparation of the polishing jig in advance when it is necessary to grind the transfer roll, which is suspended in the overhead crane with a rope, and then moved on the transfer roll. Do.

In addition, the operator may have to stop the plant operation for a long time in order to polish the feed roll, such as the operator should contact the operator of the overhead crane with a hand signal in the field, and the surface of the polishing jig and the friction surface of the feed roll may not be uniformly contacted. As a result, the feed roll may be unevenly polished, thereby causing a problem that the surface of the strip is damaged.

It is an object of the present invention to automatically and safely control and support the polishing tool of the automatic polishing apparatus on the transfer roll, so that the surface of the transfer roll can be polished more cleanly to improve the quality of the strip end product. To provide a device.

The automatic polishing apparatus of the run out table according to the present invention includes a polishing jig up and down the upper portion of the feed roll of the run out table; A table supporting the polishing tool with a winch wire and having a facility for driving the polishing tool; Polishing means surrounding the surface of the polishing jig and polishing the feed roll; A moving winch beam capable of advancing the polishing jig in a horizontal direction from the table; A winch drum capable of vertically moving the polishing jig in the direction of the feed roll from the table; And it may include a control unit for controlling the forward and backward movement of the polishing jig.

In addition, the polishing means of the automatic polishing apparatus of the run out table according to the present invention is sandpaper capable of polishing the full width of the feed roll, the polishing jig further comprises a sandpaper tension adjusting device for adjusting the tension of the sandpaper. can do.

In addition, the sandpaper tension adjusting device of the automatic polishing device of the run out table according to the present invention is a sandpaper drum for supporting the sandpaper at both ends of the polishing jig, sandpaper tension frame for pulling the sandpaper drum and pulling the sandpaper tension frame It may include a control unit for adjusting.

In addition, the polishing fixture main body of the automatic polishing apparatus of the run out table according to the present invention may further include a shock absorber is installed to prevent the impact of the polishing means and the transfer roll.

In addition, the table of the automatic polishing apparatus of the run-out table according to the present invention may further include a position sensor for detecting the height of the polishing jig, and a guide rod for adjusting the height of the position sensor.

In addition, the controller may be controlled by the automatic polishing device table or remotely.

By the automatic polishing device of the run out table of the above configuration, the polishing tool of the automatic polishing device can be automatically controlled and securely supported, so that the surface of the feed roll can be polished more cleanly, thereby improving the quality of the strip final product. .

In addition, the polishing jig can be polished at the same time the entire width of the feed roll to reduce the process time, it is possible to reduce the damage of the feed roll by absorbing the impact during the polishing of the feed roll and the polishing jig.

In addition, since the control unit for controlling the position of the polishing jig can be controlled by the automatic polishing device table or remotely, the convenience of use is added.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention may deteriorate other inventions by adding, changing, deleting, or other components within the scope of the same idea. Other embodiments that fall within the scope of the present invention may be easily proposed, but this will also be included within the scope of the present invention.

1 is a schematic diagram of a rolling process to which an automatic polishing device of a feed roll of a run out table according to the present invention is applied.

The rolling process, as shown in FIG. 1, inserts the forced strip 12 into a rolling mill 10 consisting of two rolls that rotate, and increases or thins by applying a continuous force while gradually narrowing the interval of the rolling mill rolls. And the strip 12 is conveyed on the run out table 15 which consists of the several conveyance roll 16. As shown in FIG. The strip 12 is first passed through the pinch roll 20 to be bonded to the winder 30, and the pinch roll 20 is rotated so that the strip 12 is conveyed on the feed roll 16. In the course of transfer, the cooler 14 provided on top of the run out table 15 sprays the coolant onto the strip 12 while the strip 12 is brought to the target cooling temperature. The strip 12, which has undergone such a process, is collected in the winder 30 to become a finished coil 32.

When the rolling process, when the surface of the feed roll 16 for transferring the strip 12 to the winder 30, if a flaw occurs when necessary, the polishing jig 70 of the present invention is lowered by the transfer roll ( Keep the surface of 16) clean at all times.

Figure 2 is a schematic cross-sectional view of the automatic polishing apparatus of the transfer roll of the run out table according to the present invention, Figure 3 is a cross-sectional view showing a polishing jig of the automatic polishing apparatus according to the present invention.

2 and 3, in order to polish the surface of the feed roll 16, the polishing jig 70 is disposed on the top of the feed roll 16 of the run-out table 15, and the polishing jig 70 is disposed. Polishing is brought into contact with the feed roll 16.

The automatic polishing device 90 of the run out table according to the present invention is a polishing jig 70, which is up and down on the conveying roll 16 on the run out table 15, the polishing jig 70 to the winch wire 44 And a table 42 on which a facility for driving the polishing jig 70 is provided, a polishing means 72 surrounding the surface of the polishing jig 70, and polishing the transfer roll 16, and the polishing jig ( A movable winch beam 50 capable of advancing 70 horizontally from the table 42 in the horizontal direction, and the polishing fixture 70 capable of vertically moving in the direction of the feed roll 16 from the table 42. The winch drum 45 and the polishing jig 70 may include a control unit (not shown) for controlling forward and backward movement.

The polishing jig 70 is a device capable of removing the flaw of the surface of the conveying roll 16, and is up-down from the upper portion of the conveying roll 16 on the run-out table 15. The polishing jig 70 is fixed to the polishing jig connecting portion 78 and the polishing jig beam 82 connected to the winch wire 44 to contact the feed roll 16 by the vertical movement of the winch wire 79. have. The polishing jig arm 77 is connected to the polishing jig beam 82 and has a structure for supporting the polishing jig main body 80 so as not to shake.

The polishing jig 70 polishes the surface of the transfer roll 16 with sandpaper 72, which is polishing means that entirely surrounds the surface of the polishing jig main body 80. The sandpaper 72 surrounds the polishing jig main body 80 so as to polish the entire width of the transfer roll 16, and the sandpaper tension adjusting device 75 which can coerce the tension of the sandpaper 72 is polished. It is provided on the jig main body 80.

The sandpaper tension adjusting device 75 is connected to the sandpaper drum 71 and the sandpaper drum 71 to pull the sandpaper 72 to support the sandpaper 72 so that the sandpaper 72 may have a predetermined tension. A sandpaper tension frame 73 for pulling 71 and a sandpaper tension adjustment part for adjusting the pulling of the sandpaper tension frame may be included.

The sandpaper tension adjusting unit pulls the sandpaper tension frame 73 due to the binding and release of the sandpaper tension bolt 74 and the sandpaper tension nut 76, so that the sandpaper 72 remains flat in the polishing jig main body 80. Do it.

The portion of the abrasive fixture body 80 in contact with the surface of the feed roll 16 is made of a flexible material, while contacting the sandpaper 72 into the abrasive fixture body 80 when polishing the feed roll 16. The feed roll 16 may enter.

When the feed roll 16 enters into the polishing fixture main body 80, the transfer roll 16 may come into contact with a cushion that is a shock absorbing agent 79 in the main body 80, thereby preventing the transfer roll 16 from being impacted.

The polishing jig 70 configured as described above is driven by the facility on the table 42 and positioned on the feed roll 16.

First, the polishing jig 70 is supported by the winch wire 44, and the winch wire 44 is unwound or wound on the winch drum 45 while the horizontal or vertical position of the polishing jig 70 is determined.

In order to control the horizontal and vertical positions of the winch wire 44, on one side and the lower side of the table to prevent shaking of the turning guide roll 43 and the grinding jig 70 to change the direction of the winch wire 44 A polishing jig guide roll 47 and a polishing jig auxiliary guide roll 49 are provided.

The winch beam 50 is connected to the winch wire 44 and the connecting portion 64, the sliding winch wire 40 is drawn in or out of the fixed winch beam 40, the winch wire 44 is wound on the winch drum 45 or Let loose.

When the movable winch beam 50 slides out of the fixed winch beam 40, the winch wire 44 is released from the winch drum 45 to advance the polishing jig 70. In addition, when the movable winch beam 55 slides into the fixed winch beam 40, the winch wire 44 is wound around the winch drum 45 to retreat the polishing fixture 70.

On the other hand, the moving winch beam 50 is moved forward and backward by the drive wheel 54, the drive wheel is driven by the moving winch beam motor 52. Then, the moving winch beam 50 is controlled by the reducer 56 of the unwinding or winding speed.

The winch drum 45 itself is rotated forward and backward, to loosen or wind the winch wire 44. When the winch wire 44 is released, the polishing jig 70 moves downward, and the winch wire When the 44 is wound, the polishing jig 70 moves upward.

On the other hand, the winch drum 45 is rotated forward and reverse by the winch drum drive motor 41.

In particular, since the polishing jig 70 should be accurately disposed on the conveying roll 16, the guide rod 60 on one side of the table 42, the position sensor 62 on the lower end of the polishing jig 70 ) Detects the up and down position and sends a signal to the controller.

The guide rod 60 may be moved up and down to adjust the position of the position sensor 62 in the table 42.

As such, the forward and backward movements of the polishing tool may be controlled by a controller (not shown). The controller may be provided in a table 42 of the automatic polishing apparatus 90 or in a cab remote from the table 42. The movement of the polishing jig 70 can be controlled.

Figure 4 is a functional diagram showing a state that the feed roll of the run out table is polished to the polishing tool of the automatic polishing apparatus according to the present invention.

4, the polishing jig 70 is seated on the feed roll 16 of the run out table. The polishing jig 70 is lowered to a position such that the feed roll 16 can push up the sandpaper 72 of the main body 80 of the polishing jig 70.

The sandpaper 72 of the polishing jig 70 may polish the full width of the feed roll 16, and may polish a part of the width by adjusting the front-back direction.

The polishing jig 70 is brought into close contact with the upper portion of the transfer roll 16, and the surface of the transfer roll 16 is polished cleanly by rotating the transfer roll 16.

By the automatic polishing device of the run out table of the above configuration, the polishing tool of the automatic polishing device can be automatically controlled and securely supported, so that the surface of the feed roll can be polished more cleanly, thereby improving the quality of the strip final product. .

In addition, the polishing jig can be polished at the same time the entire width of the feed roll to reduce the process time, it is possible to reduce the damage of the feed roll by absorbing the impact during the polishing of the feed roll and the polishing jig.

In addition, since the control unit for controlling the position of the polishing jig can be controlled by the automatic polishing device table or remotely, the convenience of use is added.

1 is a schematic diagram of a rolling process to which an automatic polishing device of a feed roll of a run out table according to the present invention is applied.

Figure 2 is a schematic cross-sectional view of the automatic polishing device of the feed roll of the run out table according to the present invention.

Figure 3 is a cross-sectional view showing a polishing jig of the automatic polishing apparatus according to the present invention.

Figure 4 is an operation showing the appearance that the feed roll of the run out table is polished to the polishing tool of the automatic polishing apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: rolling mill 12: strip

14: chiller 15: run out table

16: feed roll 30: winding machine

32: coil (finished product) 40: fixed winch beam body

41: winch drum motor 42: table

43: turning guide roll 44: winch wire

45: winch drum 47: polishing jig guide roll

49: abrasive fixture auxiliary guide roll 50: moving winch beam body

52: drive motor 54: drive wheel

56: reducer 60: guide rod

62: position sensor 70: polishing jig

71: sandpaper drum 72: sandpaper

73: sandpaper tension frame 74: sandpaper tension adjusting bolt

75: sandpaper tension adjusting device 76: sandpaper tension adjusting nut

77: abrasive fixture arm 78: abrasive fixture connection

79: shock absorber 80: abrasive jig main body

82: abrasive fixture beam

Claims (6)

A polishing jig up and down on the feed roll of the run out table; A table supporting the polishing tool with a winch wire and having a facility for driving the polishing tool; Polishing means surrounding the surface of the polishing jig and polishing the feed roll; A moving winch beam capable of advancing the polishing jig in a horizontal direction from the table; A winch drum capable of vertically moving the polishing jig in the direction of the feed roll from the table; And And a control unit for controlling forward and backward movement of the polishing jig. The method of claim 1, The polishing means is sandpaper that can polish the full width of the feed roll, The polishing jig further comprises a sandpaper tension adjusting device for adjusting the tension of the sandpaper. The method of claim 2, The sandpaper tension adjusting device includes a sandpaper drum for supporting the sandpaper at both ends of the polishing jig, a sandpaper tension frame for pulling the sandpaper drum, and an adjusting unit for adjusting the pulling of the sandpaper tension frame. The method of claim 1, In the polishing jig main body further comprises a shock absorber is installed to prevent the impact of the polishing means and the transfer roll. The method of claim 1, The table further includes a position sensor for detecting the height of the polishing jig, and a guide rod for adjusting the height of the position sensor. The method of claim 1, The control unit is an automatic polishing device table or an automatic polishing device that can be controlled remotely.
KR1020070090597A 2007-09-06 2007-09-06 Automatic grinding device for run out table KR20090025616A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070090597A KR20090025616A (en) 2007-09-06 2007-09-06 Automatic grinding device for run out table

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070090597A KR20090025616A (en) 2007-09-06 2007-09-06 Automatic grinding device for run out table

Publications (1)

Publication Number Publication Date
KR20090025616A true KR20090025616A (en) 2009-03-11

Family

ID=40693918

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070090597A KR20090025616A (en) 2007-09-06 2007-09-06 Automatic grinding device for run out table

Country Status (1)

Country Link
KR (1) KR20090025616A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102327900A (en) * 2011-10-01 2012-01-25 中色科技股份有限公司 Device for flushing roll table of hot milling roll

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102327900A (en) * 2011-10-01 2012-01-25 中色科技股份有限公司 Device for flushing roll table of hot milling roll

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