JP2000280023A - Winding method of slit material and meandering prevention device - Google Patents

Abstract

(57) [Problem] To provide a method for preventing meandering of a divided steel strip, in which, when winding a slit material divided in a width direction, coil ends are not irregular and the winding shape is always uniform. It is intended to provide a meandering prevention device. When a steel strip is divided into a plurality of slits in the width direction during traveling and each of the slits is wound in a coil shape by a tension reel via a differential pinch roll, the slit is placed upstream of the differential pinch roll. A side guide is arranged, and the movement of the slit member in the width direction is restricted by the side guide.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for winding a slit material and a meandering prevention device, and more particularly to a technique for winding a steel strip divided into a plurality of pieces in a width direction with a good posture during running.

[0002]

2. Description of the Related Art In a pickling line and a temper rolling line of a hot-rolled steel sheet, a hot-rolled steel strip is run and divided into two pieces in a sheet width direction to be separately coiled. May be wound up. Such a division of the steel strip in the width direction is performed by pressing a blade called a slitter against a central portion in the plate width direction and cutting the steel strip into a so-called “vertical split” state,
The steel strip after cutting is called a slit material or a split steel strip. This slit material is then wound up by a tension reel arranged on the exit side of the traveling line.

[0003] In the meantime, in the above-mentioned winding operation of the slit material, not only a winding device dedicated to the slit material is used, but also a winding device capable of winding an ordinary non-divided material. Done. FIG. 3 is a diagram showing a winding facility installed in a pickling line or a temper rolling line. In the winding facility shown in FIG. 3, tension reels 10a and 10b for winding the steel strip 9 in a coil shape are arranged in the line direction. Different pinch rolls 6a, 6b are arranged on the entry sides of the tension reels 10a, 10b, respectively, and the steel strip is wound on the tension reels via the differential pinch rolls. Here, the tension reel 10
a, 10b and the differential pinch rolls 6a, 6b are usually used for winding up undivided steel strips, so that the maximum width (normally 1500 mm) of the steel strips to be processed is used.
) Has a width of about 2 m. In FIG. 3, reference numeral 5 denotes a table roller for conveying a steel strip, 11 denotes a cutting machine, and 12 denotes a tension reel entry side guide.

When the slit material is wound by using the winding device shown in FIG. 3, the steel strip is divided in the width direction by a slitter (not shown) located further upstream than the cutting machine 11 and divided. One of the steel strips 9a is wound on the downstream tension reel 10a, and the other steel strip 9b is wound on the upstream tension reel 10b.

[0005]

As described above, 2
When the winding of the slit material wound by the tension reels is completed, the steel strip is cut by the cutting machine 11, and the tail end generated by the cutting is wound by the tension reels 10a and 10b. To form a slit material coil. Here, before the cutting of the steel strips 9a and 9b during winding by the cutting machine 11, the steel strip is provided with a tension reel 10a or a tension reel 10b and a tension reel located further upstream than the slitter. Winding is performed while applying tension to equipment such as a quality rolling mill and a pride roll. However, when the steel strip is cut by the cutting machine 11, it is impossible to apply tension between the equipment on the upstream side of the slitter and the tension reel. Winding is performed while holding the steel strip. In this case, in the downstream side 6a of the two differential pinch rolls, as shown in FIGS. 4A and 4B, the steel strip (slit material) 9a is shifted from the center in the width direction of the differential pinch roll. Since the sheet is conveyed at the inclined position, meandering of the slit material easily occurs. here,
As can be seen from FIG. 4B, when the slit material is clamped by the differential pinch roll, the slit material is clamped at a position shifted to the side opposite to the cut end 4, so that the slut material meanders to the cut end side. . If the steel strip (slit material) 9a is wound up in a state where the meandering is generated, the ends of the obtained coil in the width direction become uneven, and the coil cannot be shipped as it is. And cause a decrease in production efficiency.

In view of the above circumstances, the present invention provides a slit material winding method and a slit material meandering prevention device which have no irregularities in the coil ends and always have a uniform winding shape when winding the slit material. It is intended to be.

[0007]

In order to achieve the above object, the present inventors have proposed that the slit member 9a is provided with a tension reel 10
Before arriving at "a", the inventor carried out intensive research with an emphasis on establishing a posture convenient for winding, and embodied the results in the present invention.

That is, according to the present invention, a plurality of tension reels arranged in series in a line direction in a steel strip processing line having a slitter for dividing a steel strip in the width direction are divided into a plurality of pieces in the width direction by the slitter. A method of winding a slit material separately winding the slit material, wherein when winding the slit material on a tension reel located on the downstream side of the plurality of tension reels, the slit material to be wound The cut end by the slitter is guided by a side guide on the entry side of the tension reel.

Further, the present invention is directed to a steel strip processing line provided with a slitter for dividing a steel strip in the width direction, wherein a downstream tension reel of a plurality of tension reels arranged in series in the line direction is inserted. Side slit guide that guides the cutting machine end by the slitter, a sensor that detects the position of the cutting end, and a cutting end position detection result by the sensor. And a position adjusting means for adjusting the width direction position of the side guide.

Here, the side guide is preferably a vertical roll.

In the present invention, the position of the cut end of the slit material by the slitter is detected by a sensor, and a side guide is used to detect the position.
Since the side end position is adjusted to a desired position (normal winding can be performed), the winding appearance on the tension reel becomes uniform, and the ends of the coil are prevented from being irregular. . As a result, there is no need to rewind or cut off a part of the product in order to correct the irregularity of the end portion of the steel strip coil in a later process. Stay improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a meandering prevention device for a slit material according to the present invention, with a tension reel 10a omitted. The side guide 1 is located on the upstream side of the differential pinch roll 6a and on the cut end side of the traveling steel strip slitter.
It is based on placing. This side guide 1
May be a simple plate-shaped member, but since it is brought into contact with the end face of the slit member 9a, a roll type having a small frictional resistance is preferable in the present invention. For example, as is clear from FIG. 1, two vertical rolls 1a (guide rolls 1a) in parallel are particularly preferable.

The side guide 1 is not used when winding the non-slit material with the tension roll 10a.
It is located at a position retracted from the end face of the steel strip, and can be moved to a position in contact with the end face of the steel strip during use, that is, when winding up the slit material. As an example of the moving means, as shown in FIG. 1, a retracting position is set below a traveling line of a steel strip and is raised when used. In this case, a known lifting cylinder 2 attached to the support member 11 of the guide roll 1a is effectively used as the moving means. Further, since the steel strip is divided at various positions, it is necessary to move the side guide 1 in the width direction so that the side guide 1 follows the cut end 4 of the slit member 9a by the slitter. This horizontal movement, from one side in the width direction,
This is performed by using a horizontal movement cylinder 8 and extruding as shown in FIG. As described above, the side guide 1 according to the present invention is freely movable in the width direction and the vertical direction of the steel strip running line so that the side guide 1 can contact the split position (cut end) of the steel strip at any time as needed. It has become.

Further, according to the present invention, the side guide 1
Further, a sensor 3 for detecting the position of the cut end of the divided slit material 9a by the slitter is attached.

A position adjusting means 7 for controlling the horizontal movement cylinder 8 to adjust the position of the side guide 1 in the width direction based on the detection result of the cut end from the sensor 3 is provided.

Next, a method for winding a slit material using the meandering prevention device of the present invention will be described. As described above, until the slit material 9 is cut by the cutting machine 11, equipment such as a temper rolling mill or a pride roll (FIG. 3)
(Not shown) and the tension reel 10a apply tension to the slit material 9a. Therefore, in the state before the cutting, the slit material 9a does not meander. In this state, the position adjusting means 7 is configured such that the side guide 1 which has been compared with the cut end 4 side is the slit material 9a.
The horizontal movement cylinder is controlled to move in the width direction toward. Then, when the sensor 3 detects the position of the cut end 4 of the slit member 9a by the slitter, the movement of the side guide 1 in the width direction is stopped at that position. By doing so, the side guide 1 can be made to follow the cut end 4, and in this state, the slit material 9 is cut by the cutting machine 11.
Is cut, the slit material 9a is maintained even after the tension is lost.
If the slit member 9 is cut by the side guide 1, the slit member 9a is restrained from moving in the width direction to the cut end 4 side by the side guide 1 even after the tension is lost, so that the meander does not occur.

The sensor 3 includes a split steel strip 4.
It is preferably non-contact, and the use of an optical distance meter is preferred. The lifting and lowering 2 and the horizontal moving cylinder 8
Is a hydraulic type, and the surface of the guide roll 1a is provided with a high carbon chromium bearing steel (SUJ
The use of 2) is preferred. Furthermore, it is preferable that the series of operations of the side guide 1 are all fully automatic, but it is also possible to switch to manual operation.

In the above embodiment, the side guide 1 for guiding only the cut end side of the slit material 9a is provided, but a side guide for guiding the width end on the non-cut end side may be separately provided. .

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The steel strip winding line shown in FIG.
A 500 mm steel strip 9 is run, and its center position is divided by slitters (not shown) into slit members 9a and 9b.
These are separated into different tension reels 10a and 10a, respectively.
b. At that time, since the slit material 9a corresponding to the right side in plan view meanders toward the center on the differential pinch roll 6a, the cutting end position of the slit material is frequently used by using the meandering prevention device according to the present invention. It was wound up while being restrained. In this case, the moving distance of the side guide 1 in the horizontal direction was 2 mm at the maximum.

The results were evaluated based on the occurrence rate of defective rolls, and are shown in FIG. Here, the defective rate of the winding shape refers to a rate of occurrence of a winding deviation of 10 mm or more in the plate width direction. FIG.
From the above, it is apparent that according to the winding method of the present invention, the occurrence rate of defective winding is significantly reduced as compared with the related art.

[0022]

As described above, according to the present invention, poor winding appearance of the split steel strip is greatly reduced, the winding operation is smoothed, and the product yield of the split steel strip is greatly improved. .

[Brief description of the drawings]

FIG. 1 is a side view illustrating a meandering prevention device for a slit material according to the present invention.

FIG. 2 is a front view illustrating a meandering prevention device for a slit material according to the present invention.

FIG. 3 is a side view showing a general steel strip winding device.

4A and 4B are diagrams illustrating a meandering cause of a slit material generated in the apparatus of FIG. 3, wherein FIG. 4A is a plan view and FIG. 4B is a front view.

FIG. 5 is a diagram comparing the rate of occurrence of defects in the winding appearance of the split steel strip with the conventional steel strip.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side guide 1a Vertical roll (guide roll) 2 Lifting cylinder 3 Sensor 4 Cutting end 5 Table roller 6a, 6b Diff pinch roll 7 Position adjusting means 8 Horizontal moving cylinder 9, 9a, 9b Slit material 10a, 10b Tension reel

Claims (3)

[Claims] 1. A slit material which is divided into a plurality of width directions by a plurality of tension reels arranged in series in a line direction in a processing line of a steel strip provided with a slitter for dividing the steel strip in the width direction. A winding method of a slit material to be wound separately, when winding the slit material with a tension reel located on the downstream side of the plurality of tension reels, the cut end of the slit material to be wound by the slitter. A slit material is guided by a side guide on an entrance side of a tension reel. 2. A processing line for a steel strip provided with a slitter for dividing the steel strip in the width direction, wherein the processing line is disposed on the input side of a downstream tension reel among a plurality of tension reels arranged in series in the line direction. A meandering prevention device for a slit material, comprising: a side guide for guiding a cut end by the slitter; a sensor for detecting a position of the cut end; and a width of the side guide based on a cut end position detection result by the sensor. A meandering prevention device for a slit material, comprising a position adjusting means for adjusting a directional position. 3. The apparatus according to claim 2, wherein the side guide is a vertical roll.