JP3042262B2 - Cleaning equipment for rolling mills - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus for a rolling mill, and more particularly to a cleaning apparatus used for a rolling mill.

[0002]

2. Description of the Related Art Since it is necessary to clean the surface of a stainless steel plate before rolling to prevent rolling scratches and chipping scratches, thin paper is rolled between the steel plates in the stainless steel sheet roll. However, if the thin paper is peeled off from the stainless steel plate before rolling, the paper dust scatters from the thin paper and the thin paper is charged. At this time, the paper dust floats around the charged stainless steel plate. If the rolling operation is performed in this state, the paper dust may be electrostatically adhered to the surface of the stainless steel plate, causing rolling scratches or notching scratches, resulting in reduced product quality.

[0003]

SUMMARY OF THE INVENTION In view of the above facts, an object of the present invention is to provide a cleaning apparatus for a rolling mill that can clean the surface of a raw material while removing charged static electricity before rolling. is there.

[0004]

According to a first aspect of the present invention, there is provided a cleaning apparatus for a rolling mill, wherein a space in which a pair of rolling rollers for rolling a raw material is installed and a rolling operation is performed is defined as a rolling operation area, Air curtain forming means which is provided around a hood provided above the area, blows air downward, and shuts off the inside and outside of the rolling work area with an air flow, and supplies clean air from the hood to the rolling work area. Clean air supply means for use in a rolling mill having a static electricity removing means provided in the rolling work area, for removing static electricity charged on raw materials before rolling, the static electricity removing means, Dust collecting means for collecting dust adhering to the surface of the raw material from which static electricity has been removed by the removing means; and suctioning the dust collected by the dust collecting means to remove the dust outside the rolling work area. It is characterized by comprising a dust removing means.

According to a second aspect of the present invention, there is provided a cleaning apparatus for a rolling mill, comprising an air conditioner capable of at least one of cooling and heating around the rolling work area.

[0006]

According to the cleaning device for a rolling mill of the first aspect,
The raw material is supplied to the rolling roller, and the paper attached for protecting the surface of the raw material is peeled off. At this time, static electricity is generated and the raw material is charged, so that dust such as paper dust scattered when the paper is peeled floats around the raw material. Here, air is blown downward from the air curtain forming means to block the inside and outside of the rolling work area. In this rolling work area, clean air supplied by clean air supply means is blown out of the hood. For this reason, the inside of the rolling work area has a higher pressure than the outside, and an outward airflow is generated from the inside of the rolling work area, and most of dust such as paper dust is discharged out of the rolling work area.

[0007] Dust such as paper dust that is not discharged is
After the static electricity of the raw material is removed by the static electricity removing means, the raw material is collected by the dust collecting means. The dust collected by the dust collecting means is sucked by the dust removing means and removed outside the rolling work area. Next, the raw material is passed between a pair of rolling rollers and rolled into a plate having a predetermined thickness. Thus, it is possible to prevent dust such as paper dust from adhering to the surface of the plate material, and to improve product quality.

According to the cleaning device for a rolling mill of the present invention, the air blown out of the hood of the rolling mill is cooled by air conditioning means during cooling or warmed during heating. Thereby, cooling or heating for the worker in the vicinity of the rolling work area can be performed.

[0009]

FIG. 1 shows a schematic configuration of a rolling mill 10 using a cleaning device for a rolling mill according to the present invention. The rolling mill 10 with a cleaning device has a pair of columns 12. A hood 14 is provided on the upper part of
The lower part of the hood 14 is a rolling work area 16 in which a rolling work is performed. The hood 14 is hollow, and a clean air unit 18 is connected via a duct 20. A plurality of outlets (not shown) are provided on the lower surface of the hood 14 over the entire upper area of the rolling work area 16 so that clean air can be blown to the lower rolling work area 16. The clean air unit 18 includes a blower for blowing air to the rolling work area 16 and an air filter for purifying air.

On the other hand, an air pipe 22 is provided on a peripheral side surface of the hood 14, and an air curtain nozzle 24 capable of blowing downward is provided in the air pipe 22. The air pipe 22 is connected through a duct 26 to a heat exchanger 31 that heats or cools the air by passing between a blower 28, an air filter 30 for purifying the air, and a heat medium. As a result, an air curtain 32 that blocks the air flow inside and outside the rolling work area 16 is configured.

A pair of driving rollers 34 are supported on the column 12. A drive device (not shown) is connected to the drive roller 34, and a rolling roller 36 for rolling a thin plate is drivably connected. Rolling work area 1
In 6, a supply roller 38 for supplying a plate material before rolling and a winding roller 40 for winding the plate material after rolling are provided on both sides of the support 12 in a front view. A paper take-up roller 42 is provided on the supply roller 38 side (the left side in FIG. 1), and a paper supply roller 44 is provided on the take-up roller 40 side (the right side in FIG. 1).

Further, the supply roller 38 in the rolling work area 16
On the side (left side in FIG. 1), a pair of ion shower ejection devices 4 as static electricity removing means capable of ejecting ion air are provided.
6, and a pair of brushes 48 formed in a roll shape are arranged on both front and back surfaces of the plate material. The brush 48 is covered with a hood 50. The hood 50 includes an air filter 52 for removing paper dust and a fan 54 for sucking air.
Are connected via a duct 56. Winding roller 4
Similarly, the ion shower jetting device 46, the brush 48, and the hood 50 are arranged on the 0 side (the right side in FIG. 1).

According to the rolling mill 10 having the above configuration, the supply roller 38 rotates in the driving direction (the direction of arrow A) in the rolling work area 16 and the plate material is drawn from the supply roller 38 in the drawing direction (the direction of arrow B). At the same time, the paper stuck to the surface of the plate is peeled off. This paper is taken up in the paper winding direction (arrow C
Direction), and is taken up by a paper take-up roller 42 installed outside the rolling work area 16. When the paper on the surface of the plate is peeled, static electricity is generated and the plate is charged. for that reason,
The paper dust scattered when the paper is peeled floats around the plate material. In the rolling work area 16, clean air is blown from the lower surface of the hood 14, and the rolling work area 1
The inside of the rolling work 6 has a higher atmospheric pressure than the outside, and an outward airflow is generated from the inside of the rolling work area 16. In addition, air is blown from the air curtain nozzle 24 at a higher speed than the clean air, and shuts the inside and outside of the rolling work area 16.

Thus, most of the paper dust scattered when the paper is peeled is discharged out of the rolling work area 16. In addition, the plate material passes between the pair of ion shower ejection devices 46, and when the ion air is ejected to the surface, the charged state is neutralized. After the neutralization, the plate material is passed between the pair of brushes 48, and the paper dust adhered to the peripheral portion without being completely discharged is collected by the brushes 48. The collected dust such as paper dust is sucked from the hood 50 by the fan 54, reaches the air filter 52 through the duct 56, and is removed there. Next, the plate is passed between a pair of rolling rollers 36, and is rolled into a plate having a predetermined thickness. Next, the rolled sheet material is moved in the driving direction (arrow A) together with the paper pulled out from the paper supply roller 44 in the paper pulling direction (arrow E direction) while moving in the winding direction (arrow D direction). (Winding direction). As a result, the surface of the plate material can be protected and the product quality can be improved. In the above process, the winding roller 40 side (FIG. 1)
(Right side of FIG. 2) does not operate the ion shower ejection device 46 and the brush 48.

Further, depending on the type of the raw material, the raw material is moved from the supply roller 38 (left side in FIG. 1) to the winding roller 40 (right side in FIG. 1), is once rolled by the rolling roller 36, and then reversely. It may be moved in the direction (from right to left in FIG. 1) and rolled again. In the case of moving in the opposite direction, the ion shower ejection device 46 and the brush 48 on the winding roller 40 side (the right side in FIG. 1) are operated, and the surface of the once rolled plate material is again brought into contact with the ion shower ejection device 46 and the brush. And then rolled again. At this time, the ion shower ejection device 46 and the brush 48 on the supply roller 38 side (the left side in FIG. 1) do not operate.

On the other hand, in the rolling work area 16, the hood 14
Clean air is blown out from the lower surface of the. Therefore, the inside of the rolling work area 16 has a higher pressure than the outside,
An outward airflow is generated from inside the rolling work area 16. Also,
Air is blown from the air curtain nozzle 24 at a higher speed than the clean air, and shuts the inside and outside of the rolling work area 16. This air passes through the heat exchanger 31 and is cooled during cooling or warmed during heating.

As a result, particles such as iron powder and sand in the factory are prevented from entering the rolling work area 16 by the air current from the lateral direction, and the particles can be prevented from adhering to the surface of the sheet material. . As a result, the product yield is significantly increased. Further, since cool air or warm air is blown out from the air curtain nozzle 24, cooling or heating for a worker around the rolling mill 10 can be performed.

[0018]

As described above, in the cleaning device for a rolling mill according to the first aspect, the static electricity removing means removes the static electricity charged on the raw material before rolling, and the dust collecting means provided in the rolling work area. Is configured to collect dust adhering to the surface of the raw material, and the dust removing means sucks the dust and discharges the dust to the outside of the rolling work area. And product quality can be improved.

The cleaning device for a rolling mill according to the second aspect is provided with air conditioning means capable of at least one of cooling and heating around the rolling work area. Cooling or heating can be performed.

[Brief description of the drawings]

FIG. 1 is a front view showing an outline configuration when a rolling mill using a cleaning device for a rolling mill according to the present embodiment is viewed from the front.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Rolling machine 14 Hood 16 Rolling work area 18 Clean air unit (clean air supply means) 20 Duct (clean air supply means) 22 Air pipe (air curtain formation means) 24 Air curtain nozzle (air curtain formation means) 30 Air filter (Air curtain forming means) 31 Heat exchanger (Air conditioning means) 32 Air curtain 36 Rolling roller 46 Ion shower jetting device (Static electricity removing means) 48 Brush (Dust collecting means) 50 Hood (Dust collecting means) 52 Air filter (Dust removing means) Means) 54 Fan (dust removing means) 56 Duct (dust removing means)

Claims (2)

(57) [Claims] 1. A space in which a pair of rolling rollers for rolling raw materials is installed and a rolling operation is performed is defined as a rolling operation area, and air provided downward around a hood provided above the rolling operation area is directed downward. A cleaning device used in a rolling mill, comprising: an air curtain forming unit that blows out air and blocks the inside and outside of the rolling work area with an air flow; and a clean air supply unit that supplies clean air from the hood to the rolling work area. A static electricity removing means provided in the rolling work area, for removing static electricity charged on the raw material before rolling, and collecting dust adhering to the surface of the raw material from which the static electricity has been removed by the static electricity removing means. A cleaning device for a rolling mill, comprising: a dust collecting means for collecting the dust collected by the dust collecting means; and a dust removing means for removing the dust collected outside the rolling work area. 2. The cleaning device for a rolling mill according to claim 1, further comprising an air conditioner capable of at least one of cooling and heating around the rolling work area.