JP2004009091A - Method for winding metallic strip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To propose a means for properly carrying out the winding of a metallic strip on a sleeve when winding the metallic strip on the sleeve mounted to a winding device and winding the metallic strip into a coil shape by using the sleeve as a core. <P>SOLUTION: When winding the strip around the peripheral surface of the sleeve preliminarily mounted to the mandrel of the winding device and winding the metallic strip into a coil using the sleeve as the winding core, the metallic strip is wound around the sleeve after detecting the center position in the axial direction of the sleeve mounted to the mandrel and making this center position in the axial direction of the sleeve coincide with the center position in the width direction of the metallic strip. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for winding a metal strip represented by a steel strip into a coil in a treatment facility such as a continuous annealing line (CAL) or a continuous tin plating line of a steel strip.
[0002]
[Prior art]
Conventionally, in a continuous processing line such as the above-described CAL or continuous tin plating line, it is customary to perform control to align the edges of the steel strip at a predetermined position when winding the steel strip.
That is, as shown in FIG. 1, when the steel strip 1 is wound into a coil by the winding device 2, a detector 3 for detecting the position of the edge E of the steel strip 1 is provided on the entrance side of the winding device 2. The position of the winding device 2 in the direction in which the deviation signal becomes zero between the position where the steel strip 1 is to be introduced in the winding device 2 and the position of the edge E is set in advance. Generally, movement control is performed via an adjustment unit and an operation unit.
[0003]
On the other hand, in order to facilitate the conveyance of the coil after winding, and to prevent the eaves of the coil inner diameter portion and the coil edge portion, a steel sleeve 4 is previously mounted on the mandrel 2a of the winding device 2, It is common practice to wind the steel strip 1 around the peripheral surface of the sleeve 4 and wind it into a coil shape. The steel strip wound in the line is pulled out of the winding device 2 in a form in which the sleeve is used as a core and integrated with the sleeve, and is directly carried out.
[0004]
[Problems to be solved by the invention]
As described above, when the coil is wound in a state where the sleeve is previously mounted on the inside in order to prevent the abrasion of the coil inner diameter portion and the coil edge portion, the length of the sleeve in the axial direction is about 20 mm from the width of the steel strip. Using a long sleeve, it is required that both ends of the sleeve project outward by about 10 mm from the edge of the steel strip coil.
[0005]
However, in the conventional control method, the edge position of the coil can only be aligned with, for example, one end edge of the sleeve. Therefore, as shown in FIG. In such a case, there is a problem that the relative position between the steel strip 1 and the sleeve 4 is shifted.
[0006]
Further, as shown in FIG. 2B, even when the sleeve 4 is accurately mounted on the center line CL of the mandrel 2a, the steel strip 1 is shifted in the width direction from the center line CL and wound around the mandrel 2a. If so, a similar problem arises.
[0007]
As shown in FIG. 3B, the coil wound while having the problem shown in FIG. 2 has a larger diameter than the case of the regular winding shown in FIG. The edge portion E of the steel strip 1 becomes a protruding coil, and the eaves are likely to be applied to the edge portion E during transportation, which makes it difficult to ship as a product. This causes an increase or a decrease in yield.
[0008]
Therefore, the present invention appropriately winds the metal strip around the sleeve when winding a metal strip such as a steel strip around the sleeve mounted on the winding device and winding the metal strip around the sleeve in a coil shape. The purpose is to propose how to do it.
[0009]
[Means for Solving the Problems]
According to the present invention, a metal strip is wound around a peripheral surface of a sleeve previously mounted on a mandrel of a winding device, and when wound around a coil having the sleeve as a core, the axial center position of the sleeve mounted on the mandrel is determined. A winding method for a metal strip, comprising detecting the center position of the sleeve in the axial direction and the center position in the width direction of the metal strip, and winding the metal strip around the sleeve.
[0010]
Here, when the traveling carriage on which the sleeve is mounted is moved toward the mandrel of the winding device, the axis of the sleeve is determined based on a distance traveled by the carriage during a period in which the sleeve passes through one point on the traveling path of the carriage. In addition to detecting the length in the direction, detecting the position of the bogie at the time of completion of the mounting of the sleeve, and calculating the axial center position of the sleeve based on the bogie position and the axial length of the sleeve. It is advantageous.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a method for winding a metal strip according to the present invention will be described using a steel strip as an example.
In the method of the present invention, first, it is important to detect a mounting position of a sleeve previously mounted on the winding device before winding.
That is, as shown in FIG. 4, the sleeve 4 is generally guided to the mandrel 2 a of the winding device 2 by, for example, a traveling vehicle 5 and then mounted. Therefore, a position detector 6 such as a rotary encoder for detecting the current position in the traveling direction is installed on the traveling vehicle 5, and an optical passage detector 7 is located at one point on the traveling route of the vehicle 5. Is installed to detect the passage of the sleeve 4.
[0012]
That is, in the traveling route of the bogie 5, the bogie positions at the start and end of the passage of the sleeve 4 are detected, and the axial position length of the sleeve 4 is determined from the difference between the two positions by the sleeve position calculating unit 8, and An axial center position SC of the sleeve 4 on 5 is calculated.
[0013]
Subsequently, the carriage 5 is moved to attach the sleeve 4 to the mandrel 2a of the winding device 2. The position of the carriage 5 at the time when the mounting of the sleeve 4 is completed is detected by the position detector 6, and the axial position of the sleeve 4 and the position of the metal strip in the conveying path of the steel strip 1 are detected by the sleeve position calculating unit 8. The deviation from the center position in the width direction (center line CL) is determined in advance.
[0014]
On the other hand, as for the steel strip 1 on the transport path, first, the edge position of the steel strip portion is calculated by the edge position calculation unit 9 from the detection value from the detector 3 that can detect the edge.
[0015]
Next, the center position of the steel strip 1 is determined by the plate center position calculating unit 9a based on the plate width detected using a plate width detector (not shown) or the plate width information from a higher rank. The center position of the steel strip 1 is compared with the axial center position SC of the sleeve 4 calculated by the sleeve position calculation unit 8 to determine a deviation between the two. Then, the axial center position SC of the sleeve 4 at which the deviation becomes zero is output as a position target of the winding device 2, and the deviation between the detected value of the winding device position (not shown) and the target position becomes zero. The control output to the adjuster 11 for controlling the hydraulic pressure of the cylinder mechanism for moving the coil winding device in the sleeve axis direction is calculated, and the winding device 2 is moved by the operation unit 12 mainly including the cylinder mechanism. By doing so, the width center position at the tip of the steel strip 1 can be matched with the axial center position SC of the sleeve.
[0016]
Thus, as a result of winding the steel strip 1 around the sleeve 4 which is located at an appropriate position with respect to the steel strip 1, the proper winding shown in FIG. 3A is realized.
[0017]
【Example】
In winding the steel sheet in the continuous tin plating line, control was performed to match the axial center position of the sleeve mounted on the mandrel of the winding apparatus with the width center of the steel sheet, as shown in FIG. 4, The occurrence rate of winding failure in this tin plating line has been reduced to 0.5% from 1.5% in the past.
[0018]
【The invention's effect】
According to the present invention, the steel strip can be appropriately wound in a state where the center position in the width direction of the steel strip is aligned with the center position in the axial direction of the sleeve, so that it is not necessary to rewind the coil. In addition, it is possible to achieve a reduction in processing costs and an improvement in product yield.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a conventional winding method.
FIG. 2 is a view showing a relative position between a sleeve and a steel strip in winding.
FIG. 3 is a diagram showing proper winding and inappropriate winding.
FIG. 4 is a diagram illustrating a winding method according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Steel strip 2 Winding device 2a Mandrel 3 Detector 4 Sleeve 5 Traveling trolley 6 Position detector 7 Passage detector 9 Edge position calculating unit 9a Plate center position calculating unit 10 Winding device target position calculating unit 11 Adjuster 12 Operating unit SC Axial center position CL Center line E Edge

Claims (2)

The metal strip is wound around the peripheral surface of the sleeve previously mounted on the mandrel of the winding device, and upon winding the coil around the sleeve, the axial center position of the sleeve mounted on the mandrel is detected. A method for winding a metal strip, wherein the center position of the sleeve in the axial direction is matched with the center position of the metal strip in the width direction, and the metal strip is wound around the sleeve. When moving the traveling carriage on which the sleeve is mounted toward the mandrel of the winding device, during a period in which the sleeve passes one point on the traveling path of the carriage, an axial length of the sleeve is calculated from a distance traveled by the carriage. And detecting the position of the bogie when the mounting of the sleeve is completed, and calculating the axial center position of the sleeve based on the bogie position and the axial length of the sleeve. A method for winding a metal strip as described above.

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