KR20010018717A - Apparatus for wipping work roll - Google Patents

Abstract

PURPOSE: A wiper device for a rolling mill roll is provided to completely remove dampness remaining on a surface of a working roll for evenly carrying out the applying of rolling oil with relation to the roll surface, thereby preventing serpentine advancement of a steel plate to be rolled. CONSTITUTION: A wiper device for a rolling mill roll, which removes dampness from a surface of a working roll (6) by using a wiper pad fixedly coupled with a holder (9-1), includes an air spraying plate (11) coupled with the holder to be located at a lower part of the wiper pad, and a plurality of air nozzle tubes (12) are incorporated in the air spraying plate for spraying dry air supplied from an air supply tube (14) to a surface of the working roll.

Description

WIPER DEVICE OF ROLLING WORK ROLL {APPARATUS FOR WIPPING WORK ROLL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper device for a rolling work roll, and in particular, a rolling oil sprayed for lubrication between a rolling work roll and a steel plate by removing a water film adhered to the surface of a rolling work roll that hot rolls the steel sheet by blowing high pressure air. The wiper apparatus of the rolling work roll which makes it apply well to the surface of a rolling work roll.

Generally, as shown in FIG. 1, the rolling oil sprayed from the rolling oil injection nozzle head 3 is apply | coated to the surface of the rolling work roll 6 which hot-rolls the steel plate 5 for lubrication with a steel plate.

Then, the surface of the rolling work roll 6 which is overheated while rolling the steel sheet 5 is cooled by the cooling water sprayed from the cooling water spray nozzle head 1.

In addition, water remaining on the surface of the rolling work roll 6 is removed by the wiper pad 10 in close contact with the roll surface, and rolling oil sprayed from the rolling oil spray nozzle head 3 is again applied to the surface of the rolling work roll. Is applied.

On the other hand, the conventional wiper device is installed so that the holder 9 is rotated up and down by the cylinder 2, as shown in Figure 2, the wiper pad 10 is fixed to the holder 9 by the fixing bolt (7) It is fitted to be fixed.

At this time, the wiper pad 10 has its front end in close contact with the surface of the rolling work roll 6 to wipe off the moisture on the roll surface, and if a gap is formed between the roll surface, the wiper pad 10 will follow the adjustment hole 8. The wiper pad 10 is advanced to eliminate the gap with the roll surface.

However, a gap is inevitably generated between the wire pad and the roll surface due to various causes such as the wear of the end surface of the wiper pad 10 or the irregular wear of the roll surface of the rolling work roll 6.

Here, if a gap is generated between the wire pad 10 and the surface of the rolling work roll 6, the water remaining on the roll surface cannot be removed locally, and the roll oil spray nozzle head 3 remains on the roll surface where the water remains. Rolled oil sprayed from) does not adhere.

Therefore, the friction coefficient during rolling of the steel sheet 5 is uneven in the width direction on the surface of the rolling work roll 6 having the surface coated with the rolled oil and the surface uncoated to cause a sheet failure such as meandering of the steel sheet. .

The present invention primarily removes water remaining on the surface of the rolling work roll to hot roll the steel sheet using a wiper pad, and then completely removes by spraying dry air of high pressure for lubrication between the rolling work roll and the steel sheet. It is an object of the present invention to provide a wiper device for a rolling work roll that allows the sprayed rolling oil to be well coated on the surface of the rolling work roll.

1 is a configuration diagram showing a rolling work roll provided with a conventional wiper device;

Figure 2 is a perspective view showing a conventional rolling work roll wiper device,

3 is a perspective view showing a wiper device of a rolling work roll according to the present invention;

Figure 4 is a state diagram showing the operating state of the wiper device of the rolling work roll according to the present invention,

5 is a configuration diagram showing a rolling work roll provided with a wiper device according to the present invention.

<Description of the code | symbol about the principal part of drawing>

DESCRIPTION OF SYMBOLS 1: Cooling water injection nozzle head 2: Cylinder 3: Rolled oil injection nozzle head 5: Rolled steel sheet 6: Rolling work roll 7: Fixing bolt 7-1: Fixing nut 8: Adjustment hole 9, 9-1: Holder 10, 10-1 Wiper Pads 13: Water Screen

In order to achieve the above object, the present invention is a wiper device of a rolling work roll is installed to remove moisture on the surface of the rolling work roll using a wiper pad fixed to the holder, the air spray plate is the lower portion of the wiper pad The wiper device of the rolling work roll is coupled to the holder so as to be located in the air spray plate, and a plurality of air nozzle pipes are installed in the air spraying plate so as to spray dry air supplied from the air supply pipe to the surface of the rolling work roll. to provide.

The configuration of the present invention will be described with reference to the drawings.

Figure 3 is a perspective view showing the wiper device of the rolling work roll according to the present invention, Figure 4 is a state diagram showing the operating state of the wiper device of the rolling work roll according to the present invention, Figure 5 is a wiper device is installed according to the present invention It is a block diagram which shows a rolling work roll.

In the wiper device according to the present invention, a wiper pad 10-1 and an air spray plate 11 stacked up and down are inserted into a front side of a holder 9-1 installed to be rotated up and down by a cylinder 2.

In addition, the front end surface of the air spraying plate 11 is provided by retreating from the front end surface of the wiper pad 10-1 so as to maintain a constant distance from the surface of the rolling work roll 6.

At this time, the fixing bolt 7 is vertically penetrated through the adjusting hole 8 of the holder 9-1 in the wiper pad 10-1 and the air spray plate 11, and the fixing nut 7-1. Loosen and move the fixing bolt back and forth along the adjusting hole, and then tighten the fixing nut again to move back and forth and fix.

Here, when the front end surface of the wiper pad 10-1 is worn out by friction with the rolling work roll 6, the separation distance from the front end surface of the air jetting plate 11 is narrowed. Along the air jet plate 11 along 11-1), the distance from the front end surface of the wiper pad is adjusted.

In addition, a plurality of air nozzle pipes 12 for injecting dry air toward the surface of the rolling work roll 6 passing through the wiper pad 10-1 are arranged in the width direction of the roll in the air spray plate 11. It is.

Here, the air supply pipe 14 coupled through the lower portion of the air spray plate 11 is connected to each air nozzle pipe 12 to supply high pressure dry air.

In particular, the nozzle head of the air nozzle tube 12 is manufactured in the range of 1 to 5 mm inside diameter to prevent clogging by foreign matter during use, and the dry air supplied through the air supply pipe 14 is 1 to 6 kg. It has a pressure of / cm 2.

The operation of the present invention will be described below.

After rolling the steel sheet 5, the rolling work roll 6 is cooled by the cooling water sprayed through the cooling water spray nozzle head 1, and the water remaining on the surface is removed by the wiper pad 10-1. do.

Then, the remaining working water that has not been removed by the high pressure dry air sprayed through the air nozzle pipe 12 while passing through the wiper pad 10-1 is completely removed from the rolling work roll 6.

Further, the rolling oil sprayed from the rolling oil nozzle head 3 is evenly applied to the surface of the rolling work roll 6 in which water is completely removed while passing through the wiper pad 10-1 and the air nozzle pipe 12 in sequence.

Therefore, the rolling work roll 6 in which the rolling oil is evenly applied to the surface of the rolling work roll 6 rolls the steel sheet 5 with a uniform coefficient of friction so as not to generate a sheet failure such as meandering of the steel sheet.

On the other hand, in the wiper device according to the present invention, when the wiper pad 10-1 is worn by the friction with the rolling work roll 6, the head of the air nozzle tube 12 is brought close to the surface of the rolling work roll. Accordingly, the dry air injected from the air nozzle pipe is sprayed on the roll surface at a higher pressure, so that the water removal effect on the roll surface is further improved.

Thus, the closer the gap between the head of the air nozzle tube 12 and the surface of the rolling work roll 6 is to maximize the moisture removal effect of the roll surface, but if too close, rather the collision between the nozzle head and the roll surface It may cause problems such as causing it, so set the interval carefully.

The present invention is to completely remove the water remaining on the surface of the rolling work roll to evenly apply the rolling oil to the roll surface, thereby providing an effect that can prevent meandering of the rolled steel sheet.

Claims (1)

In the wiper device of the rolling work roll, which is installed to remove moisture on the surface of the rolling work roll 6 by using the wiper pad 10-1 fixedly coupled to the holder 9-1, The air injection plate 11 is coupled to the holder 9-1 such that the air injection plate 11 is positioned below the wiper pad 10-1, and a plurality of air nozzle pipes 12 are provided on the air injection plate 11. The wiper device of the rolling work roll, characterized in that the built-in installation to spray the dry air supplied from the 14) to the surface of the rolling work roll (6).