JPH06335709A - Rolling mill with cleaning device - Google Patents

Abstract

PURPOSE:To prevent intrusion of particles of foreign matter into a rolling work area from the horizontal direction. CONSTITUTION:The ceiling 14 is installed in parallel to the ground in the upper part of a rolling mill 10 with a cleaning device. The lower part of the ceiling 14 is taken as the rolling work area 16 where the rolling work is executed. The air cleaning device 18 is provided on the ceiling 14. The ceiling 14 is made hollow, communicated to the air cleaning device 18, plural blow-out ports are provided on the under surface over the whole upper region of the rolling work area 16 and clean air is blown out to the rolling work area 16 in the lower part. Air pipes 24 are arranged on the side faces of the circumference of the ceiling 14 and nozzles 25 for air curtain through which air is downward blown out are provided. The air pipes 24 are connected to a blower 28 and air filter 30 through ducts 26 and the air curtains 32 with which air streams inside and outside the rolling work area 16 are interrupted is composed. Rolling rolls 36 for rolling a sheet material are connected to columns 12 so as to be driven.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling mill equipped with a cleaning device, and more particularly to a rolling mill equipped with a cleaning device for preventing particles such as iron powder and sand from entering laterally.

[0002]

2. Description of the Related Art In a cold rolling operation for finishing a thin plate material, in order to make the surface of the thin plate material beautiful, it is necessary to prevent rolling scratches and notch scratches due to invasion of particles such as iron powder and sand.

However, in order to prevent the intrusion of particles,
Covering the circumference of the rolling mill with a vinyl sheet or a steel plate hinders the rolling work, so conventionally, the roof is provided only with a vinyl sheet on the upper part of the rolling mill. for that reason,
Particles on the cross wind that blows through the factory building cannot be protected against dust, and these particles adhere to the surface of the finishing material, resulting in low product yield due to rolling scratches.

[0004]

SUMMARY OF THE INVENTION In consideration of the above facts, an object of the present invention is to provide a rolling mill with a cleaning device for preventing the intrusion of particles from the lateral direction.

[0005]

A rolling mill with a cleaning device according to the present invention has a rolling work area in which a pair of rolling rollers for rolling raw materials is installed and a rolling work is performed. A ceiling provided above and covering the rolling work area, and air provided around the ceiling to blow air downward,
It has an air curtain forming means for blocking the inside and outside of the rolling work area with an air flow, and a clean air supply means for supplying clean air from the ceiling to the rolling work area.

[0006]

According to the rolling mill with cleaning device of the present invention, the raw material is passed between the pair of rolling rollers in the rolling work area and rolled into a member having a predetermined shape. Further, 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 the clean air supply means is blown out from the ceiling. Therefore, in the rolling work area, the atmospheric pressure becomes higher than in the outside, and an outward airflow is generated from the rolling work area.

This prevents particles of iron powder, sand, etc. in the factory from entering the rolling work area due to cross wind,
It is possible to prevent the particles from adhering to the surface of the member.

[0008]

1 and 2, there is shown a schematic structure of a rolling mill 10 having a cleaning device according to the present invention. The rolling mill 10 with a cleaning device has a pair of columns 12. A ceiling 14 is attached to the upper part of the pillar 12 horizontally to the ground, and a lower part of the ceiling 14 is a rolling work area 16 where rolling work is performed. A plurality of air purifiers 18 (two in this embodiment) are installed on the ceiling 14. The ceiling 14 is hollow, and a plurality of blowout ports (not shown) are provided over the entire upper surface of the rolling work area 16 so as to communicate with the air purifier 18 and the clean air can be blown to the lower rolling work area 16. Has become. The air purifier 18 is a blower 20 for sending air to the rolling work area 16.
And an air filter 22 for purifying the air.

On the other hand, the air pipe 2 is provided on the peripheral side surface of the ceiling 14.
No. 4 is provided, and an air curtain nozzle 25 capable of blowing downward is provided in the air pipe 24. A blower 28 and an air filter 30 for purifying the air are connected to the air pipe 24 via a duct 26. As a result, an air curtain 32 that blocks the air flow inside and outside the rolling work area 16 is configured.

The column 12 has a pair of drive rollers 3
4 is pivotally supported. A drive device (not shown) is connected to the drive roller 34, and a rolling roller 36 for rolling the thin plate material is drivably connected to the drive roller 34. In the rolling work area 16, a supply roller 38 for supplying the plate material before rolling and a winding roller 40 for winding the plate material after rolling are installed on both sides of the column 12 in a front view.

According to the rolling mill with cleaning device 10 having the above-described structure, the plate material pulled out from the supply roller 38 in the rolling work area 16 is passed between the pair of rolling rollers 36 and has a predetermined wall thickness. It is rolled into a plate material and wound up by a winding roller 40. In this rolling work area 16, clean air is blown from the lower surface of the ceiling 14. Therefore, the atmospheric pressure in the rolling work area 16 becomes higher than that in the outside, and an outward airflow is generated from the inside of the rolling work area 16. In addition, air is blown out from the air curtain nozzle 25 at a higher speed than clean air, thereby blocking the inside and outside of the rolling work area 16.

This prevents particles such as iron powder and sand in the factory from invading into the rolling work area 16 due to the air flow from the lateral direction, and prevents the particles from adhering to the surface of the plate material. . Therefore, the yield of the product is significantly increased.

In this embodiment, the air purifier 18 is installed on the ceiling 14. However, the present invention is not limited to this, and the air purifier 18 is installed at another place, and clean air is rolled from the duct in the work area. 16 may be supplied.

[0014]

As described above, in the rolling mill with a cleaning device according to the present invention, the space in which the rolling rollers are installed and the rolling operation is performed is the rolling work area, and the air curtain forming means is provided inside and outside the rolling work area. Since the air curtain that is blocked by the air flow is formed and the clean air supply means supplies the clean air to the rolling work area, it is possible to prevent foreign particles from entering the rolling work area from the lateral direction.

[Brief description of drawings]

FIG. 1 is a front view showing a general configuration of a rolling mill with a cleaning device according to the present embodiment when viewed from the front.

FIG. 2 is a side view showing a general configuration of a rolling mill with a cleaning device according to the present embodiment when viewed from the side.

[Explanation of symbols]

10 Rolling Machine with Cleaning Device 14 Ceiling 16 Rolling Working Area 18 Air Purifier (Clean Air Supply Means) 20 Blower (Clean Air Supply Means) 22 Air Filter (Clean Air Supply Means) 24 Air Pipe (Air Curtain Forming Means) 25 Air Curtain nozzle (air curtain forming means) 26 Duct (air curtain forming means) 28 Blower (air curtain forming means) 30 Air filter (air curtain forming means) 32 Air curtain

Claims (1)

[Claims] 1. A rolling work area is defined as a space in which a pair of rolling rollers for rolling raw materials is installed and a rolling operation is performed. A ceiling provided above the rolling work area and covering the rolling work area, and a ceiling of the ceiling. An air curtain forming means which is provided in the periphery and blows out air downward to block the inside and outside of the rolling work area with an air flow; and a clean air supply means for supplying clean air from the ceiling to the rolling work area, A rolling mill with a cleaning device.