KR20210144048A - Apparatus for controlling charging coil - Google Patents

Abstract

The present invention provides a coil charging control apparatus which controls coil charging according to whether the center of a coil inner diameter coincides with the center of a releaser shaft and/or whether the center of coil width direction coincides with the center of virtual equipment. The coil charging control apparatus according to one embodiment of the present invention comprises: a sensor unit which prepares a plurality of distance sensors and measures a distance to a coil; a processing unit which obtains coil inner diameter information according to the distance information to the coil measured by the sensor unit; and a charging control unit which controls the coil charging of the coil releaser according to whether the center of the coil inner diameter from the processing unit coincides with the center of the releaser shaft.

Description

Coil charging control device {APPARATUS FOR CONTROLLING CHARGING COIL}

The present invention relates to a coil charging control device for controlling the charging of a coil to be charged in a coil unwinder.

In general, in order for the coil to be charged into the unwinder in the steel process, the center of the inner diameter of the coil and the center of the annealer must match. If the outer diameter of the coil does not match the actual outer diameter of the coil due to an external error, or if the height of the coil changes due to nicks or damage in the cylinder of the coil car that lifts the coil up and down, the coil conduction occurs due to the collision between the unwinder and the coil side. Problems that lead to equipment accidents may occur.

Republic of Korea Patent Publication No. 10-2016-0047213

According to an embodiment of the present invention, there is provided a coil charging control device for controlling coil charging according to whether the center of the inner diameter of the coil and the center of the axis of the annealer coincide and/or whether the center of the coil width direction coincides with the center of the virtual facility.

In order to solve the problems of the present invention described above, the coil charging control apparatus according to an embodiment of the present invention includes a sensor unit for measuring a distance to a coil by having a plurality of distance sensors, a coil measured by the sensor unit and A processing unit for obtaining information on the inner diameter of the coil according to the distance information of the processing unit, a charging control unit for controlling the coil charging of the coil unwinder according to whether the center of the inner diameter of the coil from the processing unit coincides with the center of the axis of the coil unwinder Can include have.

According to one embodiment of the present invention, there is an effect that can prevent in advance a large-scale accident due to a human error of the operator when the coil is charged in the coil unwinder.

1 is a schematic configuration diagram of a coil charging control apparatus according to an embodiment of the present invention.
2A and 2B are views showing the operation of the sensor unit of the coil charging control device according to an embodiment of the present invention, and FIG. 2C is a view showing the actual coil by the sensor unit of the coil charging control device according to the embodiment of the present invention. It is a drawing showing the state of measurement.
3 is a schematic configuration diagram of a coil charging control apparatus according to another embodiment of the present invention.
Figure 4a is a view showing the operation of the photographing unit of the coil charging control apparatus according to another embodiment of the present invention, Figure 4b is a view showing a state in which the coil is conducted by an external force, Figure 4c is after completion of the normal charging of the coil It is a figure which shows the width direction center mismatch of a coil.
5 is a view showing an image processing screen of the processing unit of the coil charging control apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments will be described in detail so that those of ordinary skill in the art can easily practice the present invention with reference to the accompanying drawings.

1 is a schematic configuration diagram of a coil charging control apparatus according to an embodiment of the present invention.

Referring to FIG. 1 , the coil charging control apparatus 100 according to an embodiment of the present invention may include a sensor unit 110 , a processing unit 130 , and a charging control unit 140 .

The sensor unit 110 may include a plurality of distance sensors to measure the distance to the coil.

2A and 2B are views showing the operation of the sensor unit of the coil charging control device according to an embodiment of the present invention, and FIG. 2C is a view showing the actual coil by the sensor unit of the coil charging control device according to the embodiment of the present invention. It is a drawing showing the state of measurement.

Referring to FIGS. 2A to 2C together with FIG. 1 , the sensor unit 110 may include a first sensor array 111 and a second sensor array 112 .

Each of the first and second sensor arrays 111 and 112 may include a plurality of distance sensors arranged in a line, and each of the plurality of distance sensors may be a laser sensor.

The first sensor array 111 and the second sensor array 112 may be arranged in a cross (+) shape.

The coil is moved to the center of the coil unwinder by a coil car (not shown). The distance of the coil, which has been moved, is continuously measured by the sensor unit 110 . Distance A and distance B are measured by the sensor unit 110, and since distance A is different for each coil width, a different value is displayed for each coil each time it is measured. The processing unit 130 may signal-process the inner diameter information measured by the coil from the sensor unit 110 , and the processing unit 130 may calculate an accurate width of the coil from the value.

The formula for calculating the width is as follows.

Coil width = (sensor and coil width center-A distance)*2

Distance B is the same for all coils. That is, each of the plurality of distance sensors may be a laser sensor, and the laser output from the laser sensor may pass through a coil. Accordingly, two sections are generated. Section C means the inner diameter of the coil and section D represents the outer diameter of the coil. Each of the plurality of distance sensors in the first and second sensor arrays 111 and 112 may be disposed at an interval of, for example, 1 mm. According to the respective intervals of the plurality of distance sensors in the above-described first and second sensor arrays 111 and 112, how much and how much the current coil is released through the outer diameter of the current coil and the remaining outer diameter in the process of unwinding the coil. Remaining can also be calculated and displayed.

Meanwhile, the charging control unit 140 may control the charging of the coil according to the value processed by the processing unit 130 .

For example, when the height of the charged coil or the forward and backward positions of the coil car do not match, the inner diameter of the coil in section C is inconsistent (for example, the distance B should be measured, but a different value is measured), so the charging control unit 140 ) controls the cylinder forward and backward of the loosener through a programmable logic controller (PLC), so that the charging of the loosener can be automatically stopped.

In addition, even if the inner diameter of the coil coincides with section C, which is the normal range, if the reel of the unwinder is charged in an expanded state, it may collide with the side of the coil. During coil charging, the distance A may be abnormally changed. At this time, for example, if a distance of 10 mm or more is changed, the cylinder may be controlled by the charging control unit 140 to control the unwinder forward and backward to stop charging.

In addition, when the coil is released after normal charging (maintaining the B distance in the C section, fixing the A distance in the D section) is completed, the A distance measurement in the D section is changed to the B distance by 1 mm, When all the coils are released, the distance A is lost and only the distance B in the section D is measured. In this case, it is recognized that the coils are all loosened, and the charging control unit 140 may control the forward/backward cylinder to move the unwinder backward.

3 is a schematic configuration diagram of a coil charging control apparatus according to another embodiment of the present invention.

Referring to FIG. 3 , the coil charging control apparatus 200 according to another embodiment of the present invention may further include a photographing unit 220 .

Since the sensor unit 210 is the same as the sensor unit 110 in FIGS. 1 and 2A to 2C , a detailed description is omitted, and the processing unit 230 and the charging control unit 240 are shown in FIGS. 1 and 2A to 2C . In preparation for the processing unit 130 and the charging control unit 140 in , only the additional operation by the addition of the photographing unit 220 will be described.

The photographing unit 220 may acquire a coil external image.

When the external image of the coil is photographed by the photographing unit 220 in real time, the processing unit 230 processes the image signal signal, the charging control unit 240 stores the coil external image, and the image process technique is performed. By using it, it is possible to comprehensively monitor the position of the coil or the change of the center (pass line) in the direction of the coil being unwound.

Figure 4a is a view showing the operation of the photographing unit of the coil charging control apparatus according to another embodiment of the present invention, Figure 4b is a view showing a state in which the coil is conducted by an external force, Figure 4c is after completion of the normal charging of the coil It is a view showing the width direction center mismatch of the coil, and FIG. 5 is a view showing the image processing screen of the processing unit of the coil charging control apparatus according to an embodiment of the present invention.

As shown in Fig. 4a, after the coil is seated in the coil car and the movement to the unwinder is completed (at this time, the meaning of completion means that the inner diameter B distance of the section C is crisscrossed as in Figs. 1 and 2a to 2c. It means that the direction sensor enters within the range (for example, the error range ±10mm) and the A/B distance of the D section normally falls within the range.), when the movement is normal, the coil car stops and, according to the forward signal of the charging control unit 240, the unwinder moves forward (charging start) by the cylinder.

From this time, the device starts to operate, but in a normal situation, if the position of the coil image photographed by the photographing unit 220 does not change, charging may be completed after photographing. At this time, the coil external image photographed by the photographing unit 220 is signal-processed by the processing unit 230 and transmitted to the charging control unit 240 , and the charging control unit 240 moves forward and backward of the coil car cylinder and the unwinder. The cylinder is controlled to control the charging, and the processing unit 230 controls the current coil external state, whether the width direction coincides with the center, the actual width measurement value, the position change of the coil during charging, the position change in the process of unwinding the coil after charging is completed, etc. As shown in FIG. 5, information may be delivered and displayed to the operator in real time.

However, as shown in Fig. 4b, when a collision occurs with the unwinder during coil charging, the position of the coil can be moved by the distance of the identification symbol E. For example, when the distance varies by 10 mm or more, this information is By giving a charging stop signal to the unwinder to the PLC by the charging control unit 240 in the central cab, the PLC can automatically prevent the coil from falling by stopping the charging cylinder of the unwinder.

In addition, even when the coil is normally charged and the coil is unwinding while the unwinder rotates, the photographing unit 220 may continuously send image information to the charging control unit 240 , and the charging control unit 240 determines the width of the coil. It will also measure whether the direction center (pass line) matches. At this time, as shown in Figure 4c, the distance (identification code F) between the virtual facility center line (Pass Line) (identification code G) and the center line (identification code H) of the actual charging coil (identification code H) is more than 10mm If the difference between the charging control unit 240 gives a command to move the unwinder to the PLC, and the PLC moves the forward and backward cylinder of the unwinder to move the charging coil to come to the virtual facility center line (G) so that the coil can be unwound from the center of the line It can be controlled in real time.

On the other hand, when the distance F is moved, the distance A in FIG. 1 is moved. In this case, the new normal distance A may be reflected.

Conventionally, the outer diameter of the coil is measured at the stage before the coil is charged and the position of the inner diameter of the coil is determined by the up-down cylinder of the coil car with the measured value. Since we do not know what unreasonable situation may occur even when the loosener is inserted into the inner diameter of the coil due to up-down failure due to internal damage of the car up-down cylinder, we have relied only on the operator's monitoring.

In the present invention, the coil loading is controlled according to whether the center of the inner diameter of the coil and the center of the unwinder match and whether the center of the coil width direction and the center of the virtual facility match, thereby preventing large-scale unexpected accidents caused by human errors of the operator in advance. In one system, the work that was previously divided into several tasks can be controlled by a single system, from coil charging to outer diameter measurement to unwound length to remaining length to the center of the coil width direction from the time the coil is charged until it is completely released.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, but is limited by the claims described below, and the configuration of the present invention may vary within the scope without departing from the technical spirit of the present invention. Those of ordinary skill in the art to which the present invention pertains can easily recognize that the present invention can be changed and modified.

100, 200: coil loading control device
110, 210: sensor unit
111: first sensor array
112: second sensor array
220: shooting department
130, 230: processing unit
140, 240: charging control unit

Claims (5)

a sensor unit including a plurality of distance sensors to measure a distance to the coil;
a processing unit for obtaining information on the inner diameter of the coil according to the distance information with the coil measured by the sensor unit; and
A charging control unit for controlling the charging of the coil of the coil unwinder according to whether the center of the inner diameter of the coil from the processing unit coincides with the center of the axis of the coil unwinder
A coil loading control device comprising a.
According to claim 1,
the sensor unit
a first sensor array in which a plurality of distance sensors are arranged in a straight line; and
a second sensor array in which a plurality of different distance sensors are arranged in a straight line on the first sensor array
A coil loading control device comprising a.
According to claim 1,
Coil charging control device further comprising a photographing unit for obtaining an external image of the coil.
4. The method of claim 3,
The photographing unit is a coil loading control device for acquiring the outer image of the width direction of the coil.
5. The method of claim 4,
The charging control unit is a coil charging control for controlling the coil charging of the coil unwinder according to whether the width direction center of the coil in the width direction external image of the coil from the photographing unit coincides with a preset reference width direction center Device.

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