JP2007125580A - Apparatus for suppressing zigzag motion of steel strip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for suppressing a zigzag motion of a steel strip, which apparatus can surely suppress the zigzag motion of the steel strip without damaging the edge portion of the steel strip even when the control of an EPC apparatus after shearing cannot be carried out. <P>SOLUTION: The apparatus for suppressing the zigzag motion of the steel strip comprises a pair of side guides which are arranged on a run-out table on the upstream side of a winding apparatus and outside both edges of the steel strip, a moving mechanism for moving the space and the central position of the side guides, a steel strip edge detector for detecting the edge position of the steel strip, and a zigzag motion control unit for controlling the moving mechanism by calculating the space and the central position of the side guides from the detected edge position and the width of the steel strip based on the calculated space and the calculated central position of the side guides. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a meandering suppression device that suppresses meandering of a continuous steel strip in order to wind up the continuous steel strip in a winding machine for a continuous steel strip in a cold rolling facility, a continuous annealing facility, for example, The present invention relates to a meandering suppression device for a steel strip that suppresses meandering of the steel strip when the steel strip is sheared by a shearing device to be in a tensionless state.

  Winding of strips in steel strip processing lines such as cold rolling equipment, continuous annealing equipment, continuous plating equipment, coil recoiling equipment, and continuous coating equipment, and in general, after shearing, winding during steady operation There is no tension. During steady operation with winding tension, the winding machine is always wound up so that the steel strip edges are aligned by the operation of the EPC (Edge Position Control) and CPC (Center Position Control) equipment. When there is no more, the steel strip starts to meander due to the internal distortion of the steel strip itself or the installation error of the roll. In addition, when there is a steep coil swing, the use of an EPC device or CPC device may amplify the amount of lateral vibration. Therefore, in the non-tension state after shearing, the EPC device or CPC device The function was cut off and the coil was not controlled.

  Therefore, the steel strip meanders according to the distance from the shearing machine to the winder, and the amount of winding deviation of the coil tail end wound by the meandering amount occurs. If it is sent to the next step in such a state, the winding dislocation may be damaged by the lifting tool when the crane is used, and when packing, the packing paper or the like may be damaged, which is not preferable.

For this reason, as a technique for preventing this tail end winding deviation, for example, there is a technique disclosed in Patent Document 1. This is, at the start of winding the steel sheet in a coiled state in a tensionless state where the tail end portion in the delivery side equipment that manufactures the steel sheet or the like is coiled, while pressing the upper surface of the steel sheet to be wound on the coil side, The width direction of the steel sheet is adjusted by at least one pair of horizontally movable side guide rollers in contact with the edges on both sides of the steel sheet so that the edges on both sides coincide with the edges on both sides of the already wound coil. It is a technique of winding while guiding to.
Japanese Patent Laid-Open No. 10-166054

    However, the technique described in Patent Document 1 is such that a side guide roll is provided on the side surface of the wound metal coil and a presser roll is provided on the outer circumferential surface of the wound metal coil. Control is not sufficient and meandering control is not sufficient, or the edge part may be bent depending on the relationship between the meandering amount and the thickness of the steel sheet due to contact between the coil edge and the side guide roll, and the winding shape is always improved. It wasn't.

  The present invention has been made in view of the above circumstances, and even when the EPC device after shear cutting cannot be controlled, the edge portion of the steel sheet is not damaged and the meandering is reliably suppressed. It aims at providing the meandering suppression apparatus of a steel strip.

  The invention according to claim 1 of the present invention is a winding device of a steel strip production line, and when winding the tail end of the steel strip that has become a tensionless state, the meander of the steel strip that suppresses the meandering of the steel strip. A restraining device, a pair of side guides installed on a passing plate table upstream of the winding device and outside the both side edges of the steel strip, and a drive moving mechanism for moving the distance and the center position of the side guides A steel strip edge detector that detects the edge position of the steel strip, and calculates the distance and center position of the side guides from the detected edge position and the width of the steel sheet, and the calculated distance and center position And a meandering control device for controlling the drive and movement mechanism.

  Furthermore, the invention according to claim 2 of the present invention is the steel strip meandering suppression device according to claim 1, wherein the drive movement mechanism includes a width adjusting motor for moving the side guide, and a center position of the side guide. Is a meandering suppression device for a steel strip, characterized by comprising a center alignment cylinder for aligning the center of the steel plate with the center position of the steel plate.

  In the present invention, a side guide is provided on a passing plate table immediately before the winder, and the interval and position thereof are set at a position separated from the edge position of the steel strip by a predetermined distance corresponding to the width and position of the steel strip. As a result, the meandering of the steel plate was suppressed, so that the edge of the steel plate was not damaged, and the meandering control was reliably performed, and the coiled coil was wound well. .

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a top view of the winding portion as viewed from above the line, and a diagram showing a configuration example of the present invention. FIG. 2 is a side view of the winding portion as viewed from the direction A shown in FIG. In the figure, 1 is a side guide A, 2 is a side guide B, 3 is a winding device (tension reel), 4 is a sheet passing table, 5 is a steel plate, 6 is a motor for width alignment, 7 is a cylinder for center alignment, 8 represents a meandering control device, 9 represents a host computer, 10 represents an EPC device, and 11 represents an edge position sensor.

  A pair of left and right side guides A 1 and B 2 are installed on a through plate table 4 upstream of a winding device (tension reel) 3, with the steel plate 5 interposed therebetween, on the left and right sides in the width direction.

  The width adjusting motor 6 is configured to move the left and right side guides A and B and set the left and right intervals according to the width of the steel plate 5. Further, the center alignment cylinder 7 has a function of aligning the center positions of the left and right side guides with the center position of the steel plate 5. Note that the position data of the movement destination is input from the meandering controller 8 as to which position the side alignment guides A and B are moved by the width alignment motor 6 and the center alignment cylinder 7.

  The meandering control device 8 is connected to the host computer 9 and inputs the product width and entry side width data of the steel plate 5, data on the presence / absence of trimming, and data relating to the position information of the steel plate 5. Based on the width information from the host computer, the set value of the side guide interval is determined and set to the width adjusting motor. Further, the meandering control device 8 is also connected to the EPC device, and can input the edge position information of the steel plate 5 from the edge position sensor 11 and calculate the center position of the steel plate 5. Then, this center position is output to the center alignment cylinder 7 so that the center position of the side guide coincides with the center position of the steel plate 5.

  Further, as the winding device (tension reel) 3 winds up the steel plate 5, the coil diameter becomes larger and the pass line position of the steel plate 5 to be passed through becomes higher, as shown in FIG. Moreover, since the passing plate table 4 is set for the side guide 2, the passing plate table 4 moves as the coil diameter increases, so that the side guide 2 can always have the same height as the steel plate 5. .

  How to operate the above-described side guide will be described according to a processing procedure. FIG. 3 is a flowchart showing an example of the processing procedure of the present invention. First, record information data indicating whether the edge portion of the preceding material has been trimmed, that is, whether a trimmer is used, is input from the host computer 9 to determine the processing procedure (Step 01). Here, if trimming is performed, the width of the steel plate 5 when winding is equal to the product width. Therefore, the side guide interval setting value is set to the product width (Step 02), and the trim is not performed. Since it is the same as the width of the steel plate 5 on the entry side, the value is set to the side guide interval setting value (Step 03). Further, in order not to damage the edge portion, the side guide interval is set to the product width, and the value obtained by adding a margin Δ (for example, 10 mm in total of 5 mm to the left and right) to the width of the incoming steel plate 5 Is calculated again (Step 04).

  Next, it is confirmed whether or not the position at which shear cutting is performed first is near a predetermined value αm (for example, 20 m) upstream from the shear cutting (Step 05). The position information of the steel plate 5 is calculated by the host computer 9 and, for example, a pulse signal is output at the timing when the position is reached.

  Simultaneously with the input of the signal, an edge position signal is input from the EPC device 10 (Step 06), and the width center position of the steel plate 5 is calculated (Step 07). Then, a command is output to the center alignment cylinder 7 to move to the center position (Step 08). Further, the obtained left and right side guide interval setting values (values calculated in Step 04 described above) are output to the width adjusting motor 6 (Step 09).

  Thereafter, whether the side guide has moved to a desired position is determined by signals (signals such as control result values) from the center alignment cylinder 7 and the width alignment motor 6 (Step 10).

  Then, when the moving operation is completed, a command to stop the EPC control operation is issued to the EPC device (Step 11), and winding is performed only by the operation of the side guide (Step 12). When the winding is completed (Step 13), the side guide is opened and the EPC control is enabled (Step 14).

  By taking the above processing procedure, the edge portion of the steel plate is not damaged, meandering suppression can be reliably performed, and the packaged shape of the wound coil is improved.

It is the figure which shows the upper side figure which looked at the winding-up part from the upper direction of a line, and the structural example of this invention. It is the side view seen from the A direction shown in FIG. It is a flowchart which shows the example of a process sequence of this invention.

Explanation of symbols

1 Side guide A
2 Side guide B
3 Winding device (tension reel)
4 Passing plate table 5 Steel plate 6 Width adjusting motor 7 Center alignment cylinder 8 Meander control device 9 Host computer 10 EPC device 11 Edge position sensor

Claims (2)

In the winding device of the steel strip production line, when winding the tail end of the steel strip in a tensionless state, the steel strip meandering suppression device suppresses the meandering of the steel strip,
A pair of side guides installed on the sheet passing table upstream of the winding device and outside the steel strip side edges;
A drive movement mechanism for moving the distance between the side guides and the center position;
A steel strip edge detector for detecting an edge position of the steel strip;
A meandering control device that calculates the interval and center position of the side guides from the detected edge position and the width of the steel plate, and controls the drive movement mechanism based on the calculated interval and center position;
A meandering suppression device for a steel strip, comprising: In the steel strip meandering suppression device according to claim 1,
The drive movement mechanism is
A width adjusting motor for moving the side guide;
A center alignment cylinder for aligning the center position of the side guide with the center position of the steel sheet;
A meandering suppression device for a steel strip, comprising:

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