JPH03294162A - Manufacture of steel plate with little burr - Google Patents

Abstract

PURPOSE:To automatically remove the burr of a coil-formed thin steel band by laying a flat grindstone at a specified angle to the thin steel band cross direction under the thin steel band after the thin steel band is passed through a trimmer, bringing the flat grindstone into contact with a burr, and, immediately after it, sucking burr chips and grindstone chips. CONSTITUTION:After a thin steel band 1 is passed through a bar masher roll 4, a flat grindstone 10 is laid at an angle of 5-60 deg. to the thin steel band cross direction below the thin steel band 1, and the flat grindstone 10 is brought into contact with a burr to remove the burr by a grinder 5 including the grindstone 10. At that time, the generated burr chips and grindstone chips are sucked by a suction device 6. Thereafter, the thin steel band 1 is subjected to rust preventing treatment by an oiler 7, and taken up into coil form by a tension reel 8.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is a product coil of thin steel strip, and relates to a method of manufacturing a steel plate with less burrs.

(Prior art) If burrs remain at the end of the thin steel strip in a product coil made of thin steel strip, processing defects will occur when processing the product coil. There is one disclosed in Japanese Patent Publication No. 1-110010.

This prior art has a disc-shaped cutter and a cutting positioning guide disc as a means for removing burrs at the end of the thin steel strip.

(Problems to be Solved by the Invention) A problem to be solved is that when a coiled thin steel strip is continuously threaded, small wobbles and periodic large wobbles occur at the ends of the thin steel strip on the conveying roll band. For this reason, it is difficult to follow a disc-shaped cutter using a cutting tool with a cutting positioning guide disk, and the burr cannot be completely removed.If the disc-shaped cutter is pressed more than necessary, the blade will be damaged and the burr will be removed. The present invention attempts to solve these drawbacks.

(Means for Solving the Problems) The present invention advantageously solves the problems of the prior art, and consists of continuously threading a coiled thin steel strip from a payoff reel and cutting the ends of the thin steel strip. In the manufacturing method of copper plate, in which there are few burrs (hereinafter referred to as burrs) in the process of winding a thin steel strip into a coil shape through a trimmer.

After the thin steel strip passes through the bar matsher roll, a flat grindstone is placed at the bottom of the thin steel strip at an angle of 5 to 60 degrees with respect to the width direction of the thin steel strip, and the flat grindstone This is a method for producing a steel plate with few grains, which is characterized by providing a step of bringing the grains into contact with each other and immediately thereafter sucking the grain layer and grinding wheel debris.

(Function) The present invention will be explained below based on the drawings. FIG. 1 is a schematic diagram of a manufacturing method showing an embodiment of the present invention. Thin steel f1 is first passed continuously from payoff reel 2 to trimmer 3.
The end of the thin steel strip 1 is cut through the steps. Thereafter, the thin steel strip 1 passes through a bar mat shear roll 4 that crushes the star marks generated at the end of the thin steel strip 1, and is removed by a sharpener 5 including a grindstone. that time,
The generated star grain layer and grindstone debris are sucked by a suction device 6.

Thereafter, the thin steel strip 1 is subjected to anti-corrosion treatment using an oiler 7, and then wound into a coil shape using a tension reel 8. FIG. 2 is a three-dimensional view of the sharpener 5 and its surroundings showing an embodiment of the present invention. FIG. 3 is a three-dimensional view showing the inside of the sharpener 5 according to the present invention.

A thin steel strip end presser plate 9 on the upper side and a grindstone 10 on the lower side are inclined and face each other. A plurality of pairs of the thin steel strip end holding plates 9 and grindstones 10 facing each other are provided inside the sharpener 5. A suction device 6 sucks the star grain layer and grindstone debris between a pair of thin steel strip end press plates 9 and a grindstone 10 and another pair of thin steel strip end press plates 9.
There is a suction port 11 for suction.

FIG. 4 shows the position 1 [11
It is a diagram showing the first section. The angle between the edge of the thin steel strip and the grindstone 10 is preferably 5 to 60 degrees. If the angle is less than 5°, considering the wobbling of the thin steel strip end, the thin steel strip end and the grinding wheel 10 will be approximately parallel to each other, resulting in uneven contact with the grinding wheel 10, which is not good.

If the angle exceeds 60 degrees, it is not good because the end of the thin steel strip and the grinding wheel 10 may come into contact with each other in a rear-end collision state. Most preferably, the angle between the edge of the thin steel strip and the grinding wheel 10 is 2, as shown in FIG.
An angle in the vicinity of 5@ is good because uneven contact does not occur.

(Effects of the Invention) According to the present invention, a coiled thin #II! Stars can be removed even if minute and periodic large fluctuations occur at the end of the thin steel strip on the transport roll band during continuous sheet passing of the thin steel strip.

[Brief explanation of the drawing]

Fig. 1 is a manufacturing process diagram according to the present invention, Fig. 2 is a star grain removal process diagram according to the present invention, Fig. 3 is a three-dimensional diagram of a sharpener according to the present invention, and Fig. 4 is a diagram showing a thin steel strip end according to the present invention. It is a figure showing the positional relationship with a grindstone. 1...Thin steel strip 2...Payoff reel 3...
・Trimmer 4... Bar pine shear roll 5...
・Sharpener 6...Suction device 7...Oiler
8... Tension reel 9... Thin steel strip end holding plate 10... Grindstone 11... Suction port Fig. 1 Fig. λ

Claims (1)

[Claims] (1) Manufacture of steel plate with few burrs through the process of continuously threading a coiled thin steel strip from a payoff reel, passing through a trimmer that cuts the ends of the thin steel strip, and winding the thin steel strip into a coil shape. In the method, after the thin steel strip passes through the above-mentioned trimmer, a flat grindstone is laid at the bottom of the thin steel strip at an angle of 5 to 60 degrees with respect to the width direction of the thin steel strip, and the flat grindstone is placed on the burr. A method for manufacturing a steel plate with few burrs, characterized by providing a step of bringing the burrs into contact and sucking burr debris and grindstone debris immediately after the contact.