JPH0976007A - Scraper device for blade for roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the quality of products by reciprocating a a blade for rolls and removing foreign matters which are accumulated on the blade. SOLUTION: This device is composed so as to remove the foreign matters along the blade 3 and roll 2 in the upper part of the roll 2 with a screw shaft 7 driven with a motor 8 through a sprocket 9. A chip 6 made of rubber, resin or nonwoven fibric is fixed at the tip of the scraper 5 with a bolt. In this way, the foreign matters which are accumulated on the blade are removed, and denting and slip of the steel strip are prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scraper device for removing foreign matter present on a blade after removing foreign matter adhering to the surface of a process roll when transporting a metal strip such as a steel strip.

[0002]

2. Description of the Related Art In transporting a metal strip such as a steel strip, if foreign matter adheres to the roll surface, a surface flaw is generated on the strip. FIG. 2 is an explanatory view showing a blade of a conventional roll. In FIG. 2, 1 is a steel strip and has a thickness of 0.1.
It is a cold-rolled steel sheet of about 2.0 mm. Reference numeral 2 denotes a roll, which adjusts the line tension of the steel strip and changes the conveying direction of the steel strip. Reference numeral 3 denotes a blade, which scrapes off foreign matter such as iron powder, scale, and rolling fluid adhered to the roll. Reference numeral 4 is a foreign matter, which is scraped off by the blade 3 and accumulated on the blade. The surface of the roll 2 is sprayed and plated on steel, and if foreign matter such as iron powder or scale adheres to the roll, the steel strip will be flawed. Further, the rolling liquid adheres to the rolls, so that slips and stains on the steel strip occur. Therefore, a blade is pressed against the roll to remove foreign matter such as iron powder, scale, and rolling fluid adhered to the roll, thereby preventing the steel strip from being flawed and slipping.

As an apparatus for removing such foreign matter on the roll surface, there is an invention disclosed in Japanese Patent Laid-Open No. 6-39420. The present invention is an apparatus capable of efficiently removing foreign matter on a roll surface by bringing a doctor blade into contact with a roll and blowing the captured foreign matter to a suction device with a blowing gas. However, even with such a device, it is still incomplete as a foreign matter removing device, and depending on the winding shape of the steel strip on the roll, the blade is installed on the upper part of the roll, so that the iron powder removed by the blade is removed. There is a problem that the rolling liquid containing the scale and scale is further accumulated on the blade, so that the steel strip and the end surface of the roll are contaminated, and the flaw and the slip of the steel strip occur again.

[0004]

SUMMARY OF THE INVENTION The present invention provides a means for preventing foreign matter accumulated on such a blade from again contaminating the end surface of a steel strip or roll and causing a scratch or slip. To aim.

[0005]

According to the present invention, a scraper device for a roll blade is characterized in that the roll or blade is reciprocated by driving a cylinder or a screw shaft to remove foreign matters accumulated on the blade. And
Further, the scraper is a scraper device for a blade for a roll, characterized in that the tip portion of the scraper in contact with the blade is made of rubber, resin or non-woven fabric.

[0006]

According to the present invention, by virtue of having the above-mentioned constitution, it becomes possible to reliably remove foreign matters on the roll even with a blade installed on the upper part of the roll. The slip can be prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing an apparatus according to the present invention.
Screw shaft 7 driven by a motor 8 via a sprocket 9
Is configured to remove foreign matter on the roll 2. A tip 6 made of rubber, resin or non-woven fabric is fixed to the tip of the scraper 5 with bolts.

[0008]

As described above, according to the scraper device for a blade for rolls of the present invention, the foreign matters accumulated on the blade are removed, and the steel strip is prevented from entering the flaws and slipping of the steel strip. The quality can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a scraper device for a roll blade, which is an embodiment of the present invention,

FIG. 2 is an explanatory diagram for explaining an outline of a conventional roll blade.

[Explanation of symbols]

 1 Steel strip 2 Roll 3 Blade 4 Foreign material 5 Scraper 6 Tip 7 Screw shaft 8 Motor 9 Sprocket

Claims (2)

[Claims] 1. A scraper device for a roll blade, which is driven by a cylinder or a screw shaft to reciprocate on the roll blade to remove foreign matters accumulated on the blade. 2. The scraper device for a roll blade according to claim 1, wherein the tip portion of the scraper in contact with the blade is made of rubber, resin or non-woven fabric.