JPH09225526A - Method for coiling extra thin metallic strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent break and irregular coil at the time of coiling by imparting with a tension in the advancing direction of a strip to one end part in the width direction of the strip and adjusting a reel so that a position where the end part imparted tension is detected on a transporting means becomes constant. SOLUTION: Tension is imparted to one end in the width direction of an extra thin metallic trip 1 which travels on the transporting means 8 from a casting roll 2 to a coiler 4. To impart the tention, there are a method in which the coiling angle of the coiler 4 is inclined and a method in which the diameter of a deflector roll is changed. It is preferable to be the tension of 0.5-10kg/mm<2> per unit cross section to the extra thin metallic strip 1 of <=50μm thickness. In this way, the position on the transporting means 8 of the end part imparted tension is correctly detected, also position control is facilitated, break and irregular coil in the coiling process are prevented and stable production is executed.

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 an ultrathin metal ribbon, and more specifically, to adjust the winding shape when winding the ultrathin metal ribbon on a reel. The present invention relates to a technique of applying tension to one end portion in the direction and controlling the position of the end portion on the tensioned side while winding at high speed.

[0002]

2. Description of the Related Art Conventionally disclosed techniques for winding a metal strip are as follows. For example, Japanese Patent Laid-Open No.
JP-A-20608 discloses a method of detecting the meandering amount of a steel strip running on a continuous rolling line, and correcting the amount corresponding to the detected amount by leveling or bending of a rolling mill. In addition, Japanese Patent Laid-Open No. 2-118031 discloses
In order to prevent the meandering that occurs when a metal strip is run over a long distance, a method of adjusting the lateral reduction amount of a tension leveler provided in a line is disclosed in Japanese Patent Laid-Open No. 20031/1990.
No. 0 and JP-A-61-259815 are methods for correcting meandering by changing the position of a work roll used for rolling, and JP-A-62-19812 is a method for correcting meandering by a linear motor. Shows. In all of these methods, when the metal strip is rigid in the width direction, it is forcibly corrected by a mechanical force to bring it into an appropriate running state. In other words, it is intended for winding a metal band that has a certain thickness and rigidity, and that does not deform itself.

However, if these methods are applied to an ultrathin metal ribbon having a thickness of 50 μm or less, such as an amorphous metal ribbon, since there is no rigidity in the width direction, it is the same as pushing paper laterally. , The ribbon itself is deformed. Therefore, not only the effect of aligning the end portions in the width direction of the metal ribbon cannot be obtained, but also a crack is generated by a mechanical force, leading to breakage. Therefore, in order to control the position in the width direction of the ultrathin metal ribbon having a thickness of about 50 μm or less, the above conventional technique cannot be applied.

Therefore, the ultra-thin metal ribbon requires a completely new position control technique in the width direction during traveling. Therefore, Japanese Patent Laid-Open No. 4-356337 discloses a method of blowing a gas onto the surface of a thin ribbon produced by a cooling roll that rotates at a high speed and transporting it from the roll to a winder. A technique for preventing meandering has been disclosed. However, although the method was able to prevent slight meandering, the present situation is that satisfactory results have not been obtained.

[0005]

SUMMARY OF THE INVENTION In view of the above situation, the present invention prevents the ultra-thin metal ribbon from breaking when it is wound on a reel and facilitates the width direction thereof. It is an object of the present invention to provide a method for winding ultra-thin metal ribbon that can be aligned.

[0006]

In order to achieve the above object, the inventor earnestly studied the phenomenon at the time of winding an ultrathin metal ribbon, and obtained the following findings. That is, in order to wind the ultrathin metal ribbon without impairing the productivity, the winding of the ribbon at a high speed is required because the ribbon is thin. And, an amorphous metal ribbon or the like having a thickness of about 50 μm or less manufactured by the single roll method is usually
Since it is moving at a high speed of 100 km / h, it reacts extremely sensitively to external force and easily breaks, or if the ends in the width direction are not aligned when winding on a reel, the winding thickening process Abnormal external force is applied, and it easily breaks. In particular, momentary looseness and tension fluctuations during winding must be absolutely avoided.

When the ultra-thin metal ribbon is wound at high speed,
An air flow is generated by the entrainment of air between the already-wound portion and the ribbon to be wound, and the pressure of the air balance causes the ribbon to freely move (meander) in the width direction. In particular, in the case of an amorphous metal ribbon, since the frictional resistance between each winding layer is small, and it is lightweight and has no rigidity, it can easily move freely in the width direction, resulting in a disordered winding state. Furthermore, the thin strip is not rigid, and in a state where one end in the width direction is tensed or loosened at the other end and shakes up and down,
Since the position of the end portion on the conveying means cannot be correctly grasped, the winding is irregular.

[0008] Therefore, the inventor has aimed to solve these problems by conversely utilizing the fact that the thin ribbon, which is a feature of the ultrathin metal ribbon, is utilized. Further, the inventor of the present invention promotes the action of constantly flowing the pressure layer of the air between the winding layers in one direction by pulling one end portion, and when the end portion on the tension applying side is laminated, it is cured at a stable position. I decided to make use of it.

Therefore, according to the present invention, when the ultra-thin metal ribbon which moves at high speed on the conveying means is wound on the reel, a tension in the traveling direction of the ribbon is applied to one end portion in the width direction of the ribbon, A method for winding an ultrathin metal ribbon, characterized in that the position of the tension applying end portion on the conveying means is detected and the reel is adjusted so that it is always constant. Further, in the present invention, the above tension is set to 0.5 kg per unit cross-sectional area of the ribbon.
/ Mm ² or more and 10 kg / m ² or less, and a plate thickness of 50 μm or less. Further, in the present invention, the application of the tension is performed by changing the pass line lengths at the tension applying end portion and the other end portion in the ribbon width direction, or on the conveying means of the tension applying end portion. It is also a method for winding an ultrathin metal ribbon, which is characterized in that the position is detected by a non-contact type position detector.

According to the present invention, the winding shape of one end portion in the width direction of the ribbon can be adjusted, and as a result, smooth winding can be performed without breakage due to irregular winding or the like. The contents and operation of the present invention will be described in detail below.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION First, in the present invention, a casting roll 2
Tension is applied to one end in the width direction of the ultrathin metal ribbon 1 traveling on the conveying means 8 (for example, a belt conveyor) from the winding machine 4 to the winder 4. As a result, the position of the tension applying end on the conveying means 8 can be correctly detected, and the position control of the end can be facilitated. In this case, it is likely that the same result will be obtained even if tension is applied to the entire area of the metal ribbon in the width direction. However, in the amorphous metal ribbon 1, the thickness may not always be constant in the width direction. When there is a difference of 1 to 2 μm or when a crown shape is formed in the center in the width direction, there is a problem that only the central portion is in a tension-applied state and the end portion has a loose tension and sways. Compared to the case where tension is applied to the part,
There is a big difference in the stability of the effect. At that time, in the ultra-thin metal ribbon 1 having a thickness of 50 μm or less, the tension per unit cross-sectional area is 0.
It is preferably 5 kg / mm ² or more and 10 kg / mm ² or less. This is because if the pressure is 0.5 kg / mm ² or less, the effect of applying tension is not exerted, and if it exceeds 10 kg / mm ² , the ultrathin metal ribbon 1 is broken.

Further, FIG. 3 shows the relationship between the thickness and the tension of the ultrathin metal ribbon 1. Unlike the stainless steel foil, in the case of the amorphous metal ribbon, when the thickness exceeds 50 μm, the crystal layer is formed. Therefore, the upper limit of the thickness in the present invention is preferably limited to 50 μm, which is the limit of the amorphous metal ribbon. Next, various methods of applying tension to one end side of the ultrathin metal ribbon 1 in the width direction are conceivable, but the method of making the pass line at the end of the applying side shorter than the non-applying side is the simplest and rational. . 1 and 2 illustrate a method of making the pass line in such a manner, and a method of making the winding angle of the take-up reel shown in FIGS. 1A and 1B oblique and FIG.
The diameter of the line roll (deflour) shown in (a) and (b) is changed. The tension can be applied to the one end side according to the present invention by any of these methods, but in the present invention, the tension may be applied by any other means.

The position in the width direction on the conveying means 8 on the tension applying side may be detected by an optical method, a magnetic detection method, an imaging method, a stylus method, or the like. The detection is preferably non-contact because it is extremely thin, is moving at high speed, and is sensitive to slight disturbances, causing tension fluctuations and breaking. If it is non-contact, any method such as an optical method such as a laser beam or a CCD camera, a detection method using ultrasonic waves or X-rays, an infrared ray or a magnetic sensing method, etc. may be used.

Conventionally, as a method of correcting the end portion in winding the metal ribbon, it is usual to forcibly move the metal ribbon itself on the upstream side of the winding reel 4 to adjust the end position. Met. However, that method often breaks the ribbon as described above. Therefore, the present invention
The ultra-thin metal ribbon 1 moving at high speed is not forced to change its position, but the most important point is to move the take-up reel 4 side according to the displacement of the ribbon. Therefore, the action of the force for forcing the position on the ultra-thin metal ribbon 1 running on the conveying means 8 is completely unnecessary, and the ribbon passes on the line without any trouble. The present invention, which makes the most of this advantage, arranges the end position detector 6 upstream of the take-up reel and moves the take-up reel in accordance with the amount of positional deviation detected, thereby achieving extremely stable take-up. Is easy.

[0015]

EXAMPLE A single-roll method was used to cast an amorphous metal ribbon having a width of 200 mm and a thickness of 25 μm from a molten alloy of Fe—B—Si composition, which was conveyed at a speed of 90 km / hour and continuously wound up. At that time, the angle formed between the take-up reel central axis and the axis of the conveying line was 1.0 degree, and a tension of 1 kg / mm ² was applied to one end side of the ribbon during conveyance. Then, the position detector 6 arranged on the upstream side of the take-up reel detects how much the tension applying end portion of the ribbon is displaced from the predetermined position in the width direction of the conveying means. As a result, a considerable deviation was recognized, and therefore, the pedestal of the take-up reel 4 was corrected by a hydraulic actuator so as to correct the amount commensurate with the deviation, and the coil was wound into a coil thickness of 220 mm. The positional deviation of the end portion after the completion of winding was within 0.5 mm.

[0016]

As described above, according to the present invention, by applying a simple and rational method of applying the winding of an extremely thin metal ribbon to only one end in the width direction which has not been hitherto available. In addition, it could be easily performed while preventing breakage and irregular winding in the winding process. Then, it becomes easy to stably increase the productivity of ultra-thin metal ribbons that move at high speed,
The effect can be expected to be enormous.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a method of winding the ultrathin metal ribbon according to the present invention, in which the length of the pass line is varied in the width direction by changing the inclination of the winding reel; Is a side surface, and (b) is a plan view.

FIG. 2 is a diagram illustrating a method of winding the ultra-thin metal ribbon according to the present invention so as to change the length of the pass line in the width direction by changing the position of the differential roll.
Is a side surface, and (b) is a plan view.

FIG. 3 is a diagram showing a relationship between a tension applied to one end side in the width direction that does not cause breakage of a metal ribbon and a plate thickness of the ribbon.

[Explanation of symbols]

 1 Ultra-thin metal strip 2 Plate-making roll (casting roll) 3 Nozzle 4 Take-up reel (winder) 5 Differential roll 6 Position detector 7 Tension detector 8 Conveying means (belt / conveyor)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B65H 23/032 B65H 23/032 (72) Inventor Shun Suhara 1 Kawasaki-cho, Chuo-ku, Chiba Kawasaki Steel Chiba Steel Works, Ltd. (72) Kazuki Nakazato, 1 Kawasaki-cho, Chuo-ku, Chiba-shi Kawasaki Steel Works, Ltd. Chiba Works, Ltd. (72) Haruhiko Miyazawa, 1 Kawasaki-cho, Chuo-ku, Chiba Kawasaki Steel Co., Ltd. Chiba Works, Ltd.

Claims (5)

[Claims] 1. When winding an ultrathin metal ribbon, which moves at high speed on a conveying means, onto a reel, tension is applied to one end portion in the width direction of the ribbon so as to move in the traveling direction of the ribbon. A method for winding an ultra-thin metal ribbon, characterized in that the position of the part on the conveying means is detected and the reel is adjusted so that it is always at a fixed position. 2. The ultrathin metal thin film according to claim 1, wherein the tension is 0.5 kg / mm ² or more and 10 kg / mm ² or less per unit cross-sectional area of the ribbon, and the plate thickness is 50 μm or less. How to wind the obi. 3. The ultrathin metal according to claim 1, wherein the tension is applied by changing the pass line length at the tension applying end and the other end in the width direction of the ribbon. How to wind a thin strip. 4. The winding method for an ultrathin metal ribbon according to claim 3, wherein the length of the pass line is changed by inclining the reel center axis from the pass line center axis. 5. The position of the tension applying end portion on the conveying means is
The method for winding an ultra-thin metal ribbon according to any one of claims 1 to 4, characterized in that the detection is performed by a non-contact type position detector.