JPS61242712A - Device for controlling width of rolling material - Google Patents

Abstract

PURPOSE:To make possible control with high accuracy by providing an upward camber detector on the upper stream of an edger roll and correcting the control timing for the edger roll in accordance with the value detected by the detector. CONSTITUTION:A rolling material 3 is carried forward by table rollers 11. The width deviation in the longitudinal direction of the material 3 is stored in a control device 15 by using an arithmetic unit 14 for the moving distance of the rolling material which unit is attached to a measuring roller 13 together with a data sampling device 12 of a width gage 4. The stored width deviation is outputted successively through a control device 8 as the edger gap control output according to the arrival position of the material 3 in the longitudinal direction when the material 3 arrives at the edger roll 1. The upward camber detector 16 measures the quantity of the upward camber generated at the front or tail end of the material 3 and corrects the control timing of the roll 1 in accordance with the detected value. The point where the width distribution of the rolling material is measured by the width gate and the point of the rolling material during the control of the gap by the edger roll are thus made exactly coincident with each other and the control with high accuracy is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for controlling the width of a rolled material using an edger roll.

[Conventional technology]

Conventionally, as this type of control device, there is one shown in FIG. FIG. 3 is a conceptual diagram of a conventional strip width control device shown in, for example, Japanese Patent Application No. 108433/1982. In the figure, (1) is an edge roll, (2: is a horizontal roll, and (3) first passes through edger roll +11, then horizontal roll (2) to be rolled into the required shape, and then subjected to the subsequent finish rolling process C.The entrance side of edger roll (11) is ) is provided adjacent to the width gauge (4), which measures the width of the rolled material (3) before entering the edger roll 111C, and determines the width distribution WO (X: the tip of the plate) of the rolled material (3). Find the distance from

This width distribution Wo(x) is stored as a width deviation distribution ΔWo(x) in the width variation memory 151C, and is stored in the time lag device (
6) is supplied to the calculation fi +71 with a time delay. This time delay is for adjusting the timing to output when the point whose width data is stored in the width variation memory (51) passes through the edger roll (1).

On the other hand, the pass schedule (8) predetermined by the host computer etc. and the target width (#
3 (X) ) 19+ is input into the calculator (7), and the target width ΔW3 (X
) to obtain the optimal edge and opening setting amount distribution ΔWl(
xi is calculated and fed forward to the edger opening setting amount distribution to control the edger opening. The calculation involves determining the distribution of the amount of unsteady deformation in the plate advancing direction that occurs in the etching and horizontal rolling process C; and the length thereof in the plate advancing direction, and also calculating the strip width adjustment efficiency distribution η in the plate advancing direction at the unsteady deformation part.
(X), and calculate the optimal edge and opening setting amount distribution ΔW1 (
Calculate xi. In addition, in the figure, a, b, and c are respectively the tip unsteady deformation part, the steady deformation part, and the rear end unsteady deformation part of the rolled plate (3), and W represents the output curve of the width gauge (4). There is.

[Problem that the invention seeks to solve]

Conventional feedforward width control devices assume that when outputting the output due to the width deviation of the width measurement result at the unsteady part of the rolled material, that is, the leading and trailing ends where upward sliding is likely to occur, is output directly under the edger, it is assumed to be a flat steel plate and the output is Since timing correction was not performed, there was a problem that the width measurement point (including the predicted deformation distribution point) did not match the output point.

This invention was made to solve the above-mentioned problems. The purpose of this invention is to obtain a device that determines the output timing with high accuracy.

[Means for solving problems]

The leading and trailing edge width control device according to the present invention includes an upsliding detection device installed upstream of the edger roll that performs width control, and outputs the width deviation at the leading and trailing edge collected upstream immediately below the edger. The data is corrected and output at a timing corresponding to the sampling interval.

[Effect]

The output correction timing device in this invention C; adjusts the width deviation sampling interval to the control output interval I:
This allows for more accurate timing adjustment.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In Fig. 1, the rolled material (3) is carried forward by table rollers. Using the data collection device (1) of the width meter (4) and the rolling material movement distance calculation device I attached to the measuring roller a3, the width variation in the longitudinal direction of the rolled material (31) is measured by the control device (Is). The memorized width deviation is output as the edger opening control output when the rolled material (3) reaches the edger roll (1st position) sequentially through the control device (8) according to the reached position in the longitudinal direction of the rolled material (31). .

Figure 2 shows a top view of the tip of rolled material (3) and rolled material +3.
1 shows a side view of the tip.

Since the measuring roll (13) rotates along AB, the tip width data is calculated for each specified length (here, ΔjT
), but the Etsiyarol + 1 in Figure 1
When outputting immediately below 1, the tip of the rolled material (3) enters at an angle, so the output timing is not every ΔJT but every ΔlT×−s1− from FIG. 2e.

Here, Ak3 is an unsteady length, but the length of DE and A
The length of F is a value measured by the upward slip detection device (161) shown in FIG.

Assuming that AB and BD are straight lines and assuming that they lie on one line, the length of He can be expressed by the following equation.

Here, hr is the upstroke amount, and l is the upstroke length.

In addition, in the above embodiment, the correction of the upsweeping at the tip of the rolled material (31) was described, but the same correction is applied to the tail end (:).

〔Effect of the invention〕

As described above, according to the present invention, the edge roll detection device is provided upstream of the edger roll, and the control timing of the edger roll is corrected based on the measured value of the edger roll. The width distribution measurement point of the rolled material can be accurately matched with the point of the rolled material during opening control of the edger roll (:), which has the effect of enabling highly accurate control.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a strip width control device showing an embodiment of the present invention, FIG. 2 is a diagram showing a rising portion at the tip of a rolled material, and FIG. 3 is a block diagram showing a conventional strip width control device. It is. In the figure, (11 is an edge roll, (21 is a horizontal roll, (3) is a rolled material, (41 is a width gauge, (13 is a measuring roll, I is a moving distance calculating device, (c) is a control device, and a wire is a This is an up-sliding detection device.Of course, the same reference numerals in each figure indicate the same or corresponding parts.

Claims (2)

[Claims] (1) The width distribution of the rolled material at the entry side of the edger roll is sequentially measured in the longitudinal direction, and the opening degree of the edger roll is adjusted based on the measured value of the width distribution at the edger roll arrival timing to control the target board width. In this method, an upskirt detection device is provided to measure the upskirt occurring at the tip or tail end of the rolled material, and the opening adjustment timing of the edger roll is corrected based on the measurement value of the upskirt detection device. A plate width control device for rolled material, characterized by: (2) The plate width control device for a rolled material according to claim 1, wherein the upswept detection device measures an upslope amount and an upslope length of the rolled material.