JP2656195B2 - How to pay out coil from tension reel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of dispensing a coil of, for example, a cold-rolled steel sheet from a tension reel, and more particularly to a method of dispensing a coil onto a coil car that can be reliably and fully automated. It is.

[0002]

2. Description of the Related Art A strip manufactured by cold rolling or the like is continuously heat-treated and wound into a coil while being given an appropriate tension. At this time, by winding the band plate while moving the tension reel drum in the width direction according to the width direction edge position of the band plate detected by the edge detector arranged on the upstream side of the tension reel, the coil The end faces are aligned.

[0003] On the other hand, when a predetermined amount of the strip is wound, the continuously supplied strip is cut. At the moment when the strip is cut off, the end of the strip is greatly meandered because the tension disappears. I do. Therefore, at this time, the tension reel drum is not moved by the signal of the edge detector, and the position of the tension reel drum in the plate width direction is fixed at the time of cutting.

[0004]

By the way, the wound coil is loaded on a coil car, conveyed, and lowered on a skid of an adjacent transfer stage. However, the coil at the time when the position of the tension reel drum is fixed is fixed. Although the center position in the width direction is indefinite, the conventional coil car only moved between the fixed positions, so that the center position of the coil car could not match the center position of the coil. Therefore, if the deviation of the center position between the coil car and the coil becomes excessive, when the sheet is conveyed out of the line and lowered on the skid, the position of the coil with respect to the skid will be incomplete, and in the worst case, the coil will overturn. This has been an obstacle to promoting full automation of coil dispensing work.

The present invention has been devised in order to solve such disadvantages of the prior art, and a main object of the present invention is to provide a method of dispensing a coil from a tension reel which can achieve complete automation. is there.

[0006]

According to the present invention, there is provided an edge detector for detecting the positions of both side edges of a strip upstream of a tension reel for winding the strip into a coil. The center position in the width direction of the strip being wound is determined by the signal of the edge detector, and the coil and the coil transport coil car are determined based on the data of the center position in the width direction immediately before the strip is cut. This is achieved by providing a method of dispensing a coil from a tension reel, wherein the coil is loaded on the coil car after the center position of the coil and the coil car are matched by relative movement.

[0007]

In this way, the data of the center position in the width direction of the band plate when winding on the tension reel is obtained, and the center position of the coil and the coil car is matched with each other, and then the coil is loaded on the coil car. Then, there is no fear that the loading state of the coils on the coil car is incomplete.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below in detail with reference to specific embodiments shown in the accompanying drawings.

FIG. 1 shows a schematic configuration of a final step in a continuous annealing facility for cold-rolled steel sheets to which the present invention is applied. In this final step, the strip 1 heat-treated through a predetermined heat cycle is wound around the tension reel drum 3 of the tension reel 2. The tension reel 2 is provided with, for example, a shifter 4 that is hydraulically actuated, so that the tension reel 2 itself can be moved in a predetermined range in a direction perpendicular to the traveling direction of the band plate 1.

Immediately upstream of the tension reel drum 3, an edge detector 5 for detecting the widthwise edge of the strip 1 is provided. This edge detector 5 is, for example,
By shining light from above, the edge of the strip 1 can be CC
The camera is optically captured by a D camera, and two sets are provided so as to be able to separately detect both end edge positions in order to emit a position signal in the width direction of the strip 1.

A shear 6 is provided immediately upstream of the edge detector 5 in order to cut the strip 1 when a predetermined amount of the strip 1 has been wound on the tension reel drum 3.

The wound coil 7 is loaded on a coil car 8 and paid out from the tension reel 2. The coil car 8 is moved in a direction perpendicular to the traveling direction of the strip 2 by, for example, a hydraulically operated moving device 9. It can be moved to.

On the other hand, the position signals of both edges of the strip from both edge detectors 5 are input to a center position calculating unit 10 to calculate the center position of the strip 1 in the width direction, that is, the axial direction of the coil 7. You. Further, a position signal of one end of the strip from one of the edge detectors 5 is input to the edge position control device 11,
The position of the tension reel 2 in the width direction of the tension reel 2 is controlled so as to match the edge position of the continuously supplied strip 1. As a result, even if the running strip 1 meanders, the coil 7 is formed with its ends aligned.

At a position adjacent to the line, a skid 12 for lowering the coil 7 conveyed by the coiler 8 is provided.
Is provided.

Next, the control flow of the present invention will be described.

First, the position of the tension reel drum 3 at the winding position of the previous coil is moved to a reference position corresponding to the starting end of the next coil (step 1), and winding of the strip 1 is started. Then, the edge detector 5 is wound while winding the strip 1.
Detects the edge position of the strip (step 2). Then, with reference to one edge position, the edge position control device 11 calculates the amount of movement of the tension reel drum 3 from the following equation (step 3), and compares this value with a predetermined allowable value (step 4). If it is larger, the tension reel 2 is moved by the shift device 4 so that the deviation is equal to or less than a predetermined value (step 5).

Tension reel drum moving amount = initial winding value of edge position-current edge position

During the winding operation, the tension loop is constantly moved by the feedback loop in accordance with the displacement of the strip 1 in the width direction, so that the edges of the coils 7 are aligned.

On the other hand, from the signals of the two edge detectors 5, the center position calculating unit 10 calculates
That is, the axial center position of the coil 7 is constantly calculated by the following equation (step 6).

Coil center position = difference between center position of plate width and line center position + centering position of tension reel drum

At the time when the predetermined amount has been wound, the strip 1 is cut by the shear 6 (step 7).
The shifter 4 of the tension reel 2 is locked in accordance with the operation signal of (step 8).

After the end of the strip 1 is wound up, the coil 7 is paid out by the coil car 8. At this time, the center position in the width direction of the strip 1 just before cutting, which is obtained by the center position calculator 10, and the coil car 8 The coil position is compared with the center position (step 9), and the coil car 8 is moved so as to match each other, and then the coil 7 is loaded on the coil car 8 (step 1).
0).

As a result, since the center positions of the coil 7 and the coil car 8 coincide with each other, the position of the coil car 8 with respect to the skid 12 is always set to the fixed position control so that the skid 1
It is possible to place the coil 7 at the center of the second.

As a result, according to the present invention, the average value of the deviation amount of the center position between the coil 7 and the coil car 8 is 50 mm in the conventional type, but can be reduced to 3 mm according to the present invention. Conventionally, the variation of the shift amount is 5
What was 0 millimeters has been reduced to 2 millimeters.

After this, the coil 7 is transferred by another carriage 13 to the skid 14 at another position.

[0026]

As described above, according to the present invention, the position of the center of the strip immediately before the separation is detected, and the position of the coil car is shifted in accordance with this value, thereby automatically adjusting the position of the coil car and the coil. , And it is possible to completely eliminate the possibility that the coil will fall over when the coil is transported out of the line by the coil car and lowered onto the skid. Therefore, a great effect can be achieved in completely improving the productivity by completely automatically dispensing the coil from the tension reel device.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an apparatus to which the present invention is applied.

FIG. 2 is a flowchart of control.

[Explanation of symbols]

 Reference Signs List 1 strip plate 2 tension reel 3 tension reel drum 4 shifter 5 edge detector 6 shear 7 coil 8 coil car 9 moving device 10 center position calculating unit 11 edge position control device 12.14 skid 13 transfer carriage

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-272054 (JP, A) JP-A-4-46630 (JP, A) Jpn.

Claims (1)

(57) [Claims] 1. An edge detector for detecting the position of both side edges of a band plate is provided upstream of a tension reel for winding the band plate around a coil. The center position of the coil and the coil car is determined by calculating the center position in the width direction of the band plate and relatively moving the coil and the coil transport coil car based on the data of the center position in the width direction immediately before cutting the band plate. A method of dispensing a coil from a tension reel, wherein the coil is loaded on the coil car after being matched with each other.