JP3101424B2 - How to measure the telescope amount of the coil - 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 for measuring the amount of a telescope projecting in a coil width direction from a coil side surface of a wound coil after hot rolling or cold rolling.

[0002]

2. Description of the Related Art In the rolling process of hot rolling or cold rolling, after rolling, a wound coil is lifted by a crane using a U-shaped or L-shaped hanging tool and transported to another yard. The side surface has irregularities even though the degree is different, and it is usually in the form of a telescope.Depending on the amount of the telescope, the coil does not come off from the hanging tool during the transportation,
It is necessary to replace the hanging tool with a hanging tool with a deep hook, or push in the part protruding in the form of a telescope with a hanging tool, hit it, correct it, and depending on the degree, return it to the coiler and rewind it. Sometimes it doesn't. For this purpose, it is necessary to know the degree of the telescope on the side of the coil.However, in order to detect the amount of the telescope, the operator has to visually identify the side of the coil that has been wound, and thereby replace the hanging device. And the rank of the coil is determined according to the degree of unevenness to determine the coil transfer destination.

A method and an apparatus for automatically detecting a telescope amount in a coil width direction have also been proposed. The one shown in Japanese Patent Application No. 2-253469 is a method in which two slit lights are applied from two directions to the side of a coil placed on a conveyor and conveyed. An image processing device extracts a contour image corresponding to the shape of the coil side surface from the pattern image to detect a winding shape of the coil side surface.

In addition to the method of detecting the telescope amount in the width direction of the coil, a method of detecting the entire width of the coil by detecting an on-off sensor from one end to the other end in the width direction of the coil is also used. .

[0005]

A method of detecting the telescope amount in the width direction of the coil side surface by eye measurement and a method of automatically detecting the telescope amount by using an image processing technique are known. Can only be detected. In the case of measuring the entire width of the coil and calculating the telescope amount from the difference from the coil width, even if the sum of the telescope amounts on each side is obtained, the telescope amount on one side is not known, and the telescope amount on one side is not obtained. Since the scope amount was large, there was a risk that the line could stop due to the fact that it could not be lifted by a crane, or that the coil would fall even if lifted.

It is an object of the present invention to enable the measurement of the telescope quantity of a coil to be performed on both sides of the coil in a simple manner.

[0007]

[0008]

According to the method for measuring the telescope amount of a coil according to the present invention , the coil and a sensor for measuring the distance to the coil are relatively moved in the width direction of the coil so that the coil is moved by a distance sensor. is detected, the reference point of the distance from the beginning to measure the coil (typically coil center) of the travel distance L _AP coils to move, or the distance sensor detects the coil set point to measure the distance between the coil while measuring the moving distance L _AP of the distance sensor to move to the reference point from the beginning (typically the coil center), off coil from the distance sensor from the set point, the movement distance of the coil to between the distance measurement is completed L _PD ,
Alternatively, the distance sensor measures the moving distance L _PD of the coil that moves until the distance sensor finishes measuring the distance from the reference point, and obtains the telescope amount from the difference from 1/2 of the coil width W _O obtained in advance. It is a feature.

According to the above method, the telescope amounts on both sides of the coil as viewed from the front in a direction orthogonal to the width direction of the coil are measured.

[0010]

FIG. 1 shows an example of an apparatus used in the method of the present invention. A coil car 1 is moved in a direction indicated by an arrow in FIG. The conveyed coil 3 is conveyed to a conveyor (not shown). A laser distance sensor 4 and a laser feed monitor 5 are arranged along the conveyance path of the coil 3. as shown in, it is located a predetermined distance L ₂ away portion from the center position of the coil 3 placed on the coil station. The distance sensor 4 measures the distance to the coil 2 as viewed from a direction orthogonal to the width direction of the coil 2, and the laser feed monitor 5 determines the amount of movement of the rod 6 of the drive cylinder 2, that is, the amount of movement of the coil 3. The measured values are input to the personal computer 8 via the input / output device 7.

The detection of the coil winding shape and the measurement of the telescope amount by the present apparatus are performed as follows. That is, as shown in FIG. 2, the personal computer 8 detects the tip of the coil 3 to which the distance sensor 4 is conveyed, starts the distance measurement to the coil 3 and ends the detection. 3 at the moving distances L _{1 to} L ₃ (L
₁ is started to detect the coil center on the coil station coil, the distance indicates the moving distance of the coil to the measurement begins, L ₃ the end is detected from the coil center on the coil station coil, the distance measurement ends The measured value up to the coil 3 measured by the laser distance sensor 4 corresponding to the movement amount of the coil 3 measured by the laser feed monitor 5 is sequentially obtained, and the obtained value is displayed on the CRT 9 in FIG. and displays as shown in, as shown in FIG. 4, beginning a of the coil is detected by the laser distance sensor 4, the distance the coil 3 from the start of measurement, i.e., the coil center P certain amount L ₂ moves by measuring the distance L _AP to the laser feed monitor 5, Teresuko and a coil width W _O which had been previously input into the personal computer 8 of the distal Request flop amount L _A by the following equation.

L_A= L_AP−1/2 W_O Similarly, the coil center P is fixed amount L_TwoAfter moving
The coil end D comes off the laser distance sensor 4 and the coil
Distance L from the end of detection to the end of distance measurement _PDTo
The telescope on the terminal side measured by the user feed monitor 5
Loop amount L_DIs determined by the following equation.

When the telescope amount L _A or L _D obtained as described above is equal to or greater than L _D = L _PD -1/2 W _O , an alarm is issued from the buzzer 10 when the telescope amount L _A or L _D exceeds the set amount that can be conveyed by the hanging device. Emits.

[0014]

The present invention is configured as described above and has the following effects.

According to the first aspect of the present invention, while the coil and the distance sensor are relatively moved in the width direction of the coil, the relative movement amount from when the distance sensor starts detecting the coil to when the coil reaches the reference point and the reference point are determined. The telescope amount on both sides of the coil can be measured by a simple method of measuring the relative movement amount until the detection of the coil is completed.

[Brief description of the drawings]

FIG. 1 is a block diagram of an apparatus used in the method of the present invention.

FIG. 2 is a diagram showing a relationship between movement of a coil and a distance sensor.

FIG. 3 is a diagram showing a winding shape of a coil obtained by the method of the present invention.

FIG. 4 is an explanatory diagram at the time of calculating a telescope amount.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Coil car 2 ... Driving cylinder 3 ... Coil 4 ... Laser distance sensor 5 ... Laser feed monitor 8 ... Personal computer 9 ... CRT 10 ... Buzzer

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G01B 11/00-11/30 102 B21C 47/02 B21C 51/00 G01B 21/00-21/32

Claims (1)

(57) [Claims] 1. By relatively moving a coil and a sensor for measuring a distance to the coil in the width direction of the coil,
Coil is detected by the distance sensor, the moving distance L _AP coil distance from starting to be measured to the reference point of the coil is moved to the set point, or the distance sensor detects the coil, starting to measure the distance between the coil while measuring the moving distance L _AP of the distance sensor to move to the reference point from, off coil from the distance sensor from the set point, the movement distance L _PD coils up while the distance measurement is completed, or the distance sensor coil and obtaining a Teresuko flop amount from the difference between the half of the moving distance L _PD of the moving coil until the end of the distance measured from the reference point measured, coil width W _O obtained in advance To measure the amount of telescope in a computer.