KR100495402B1 - Apparatus and method for automatic controlling correction of flatness of a tension leveler - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for correcting flatness of a tension leveler, and in particular, when performing flatness correction (shape correction) on bending of a material generated during tension leveling of a galvanized steel sheet, By measuring the degree of flatness correction using the upper and lower valley measuring sensor in the accurate measurement, and transmits the result of the measurement to the electrical control unit main control panel via the flatness (upper, lower) measuring sensor control panel of the product, The control panel calculates the movement range of the shape correction compensators with respect to the target value, and transmits a command to the first and second intermesh devices, the anti-bogie device, and the anti-chamber device, which are compensation devices for shape correction, to perform shape correction. Of course, all of these processes (flatness setting target value for coil to work and product flatness error measurement and compensation control for work result) are automatically It can produce the product that meets the demand of the consumer, and monitor the quality improvement and the work result and display it on the graph so that the manager can identify the work status and manage the trend at any time.

Description

Apparatus and method for automatic controlling correction of flatness of a tension leveler}

The present invention relates to a tension leveler for the purpose of correcting the flatness of the product produced in the plating factory, more specifically, the shape state of the product for the operation result in the tension leveler by installing a shape measuring device at the rear end of the tension leveler It is possible to apply the results of the measurement to the anti-bogie and anti-chamber devices, which are the shape correction compensator, and to build an automatic compensation system for the change of shape of the material to meet the demands of the customers. The present invention relates to a top and bottom automatic control device and method of the tension leveler to produce a high quality and to minimize the user's load reduction and product defects.

In general, the galvanized steel sheet produced in the plating factory is used to produce a product suitable for the needs of the consumer, as shown in FIG. 1, the first and second intermeshes in the tension leveler unit 4 in the galvanized material 1. The device 2, 3 is used to apply a test and a predetermined elongation. In this process, bending of the material occurs, and the flatness (shape) correction of the product is required to compensate for this.

Conventionally, the first and second intermesh devices 2 and 3 for shape correction compensation in the tension leveler unit 4 and the anti-bore device 12 and the anti-chamber device 13 are adjusted together to remove the bending of the material. As a result, the flatness of the product can be improved.

However, the control process according to the related art receives only the setting data for each coil unit and decides only the amount of work for maintaining the flatness of the product. Therefore, the actual work result cannot be compensated at all, and the flatness is manually corrected. In this case, since there is no accurate measuring device for the work result, it relies on manual operation by the operator's experience. For accurate flatness correction, the product should arrive at the inspection table hundreds of meters away, and then the inspection expert will instruct the flatness correction value. It is designed to be recalibrated, resulting in deterioration of product quality and dissatisfaction with consumers.

In addition, according to another conventional technique, the flatness adjustment for 100 [M] cannot be performed because the control is performed for each coil unit during the flatness adjustment operation, and the first and second intermesh devices for the product to be worked on. Since it is configured to adjust the flatness by using only (2,3), that is, only by stretching by tension, the flatness is better than using the anti-bottle device 12 and the anti-chamber device 13, which are shape correction compensation devices, at the same time. Not only does it take a lot of time to adjust, but there are also various problems such as making precise control very difficult.

Therefore, the present invention has been made to solve the above problems, the present invention is to perform the flatness correction (shape correction) for the bending of the material generated during the tension leveling operation of the galvanized steel sheet, the tension leveler In the latter stage, the degree of flatness correction is accurately measured using the upper and lower valley measuring sensors, and the measurement results are transmitted to the main control panel of the electric device via the flatness (upper and lower valley) measuring sensor control panel. The device control panel calculates the movement range of the compensation devices for the shape correction to the target value and transmits the commands to the first and second intermesh devices, the anti-bore device and the anti-chamber device, which are compensation devices for shape correction, to perform shape correction. All of these processes (both flatness setting target value for coil to be worked on and product flatness error measurement and compensation control for work results) By automating, we can produce products that meet the demands of the consumer, and improve the quality, and monitor the results of the work and display them on the graph automatically so that the manager can identify the work status and manage trends at any time. It is an object of the present invention to provide a control apparatus and method.

In order to achieve the above object, the present invention is a vertical and horizontal bending control device used in the flatness (shape correction) operation for bending of the material generated during the tension leveling operation of the strip, it is installed on the rear end of the tension leveler to correct the flatness A flatness (upper and lower) measuring sensor which measures and outputs a degree of correction for the result; A flatness (up and down) measurement sensor control panel for outputting a driving signal to the flatness (up and down) measurement sensor and transmitting a result of measuring the degree of flatness correction of the strip detected by each sensor to the main control panel; The movement range of the shape correction compensators for the moving target value is calculated by reflecting the measurement result of the flatness measuring sensor, and the first and second intermesh devices, the anti-both device, and the anti-chamber device which are the shape correction compensators, respectively. Command to send shape command to shape correction, and measure flatness setting target value for coil to work and product flatness error measurement and compensation control for work result to display the work result to monitor through the screen. Provided is an automatic control device for correcting up and down curves of a tension leveler including an electric main control panel.

In addition, the present invention comprises a first step of receiving information on the material from the upper computer to determine the moving target value of the flatness correction apparatus and to divide by each device; Based on the determined movement target value, the first and second intermesh devices, the moving motor control panel, the upper and lower (anti-bo) devices, the flatness correction device, and the lower and lower (anti-chamber) devices, respectively, via the main control panel, which is an electric device. The first and second intermesh devices, anti-bottle devices, and anti-chamber devices are moved through the moving motor control panel, and the detected position is moved to the main control panel, which is an electric device, by detecting the actual moved position by using each position measuring sensor. Transmitting a value; It is possible to precisely control the flatness of the product by comparing the position value received from the position measurement sensor for each device with the flatness measurement value of the material and the flatness measurement value of the material. Provided is a method for automatically adjusting up / down music correction of a tension leveler having a third step.

The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention with reference to the accompanying drawings in detail as follows.

FIG. 2 is a general configuration diagram of an automatic control device for correcting up and down curves of a tension leveler according to an embodiment of the present invention, and FIG. 3 is a flatness (up and down curve) measuring sensor used for measuring flatness in FIG. A detailed circuit diagram illustrating the detailed configuration of the X-ray sensor and its operation principle is illustrated. FIGS. 4A to 4C illustrate a signal control process of the automatic flatness correction controller of a tension leveler according to the present invention. It is an operation flowchart for.

FIG. 2 is an overall configuration diagram of an automatic control device for correcting up and down curves of a tension leveler according to an embodiment of the present invention. In the main control panel 10 of the electric apparatus, information processing of a moving target amount is performed for each device for a material and the moving motor is performed. Device-specific position measuring sensors 6, 8, and 15 for moving the mechanical devices (first and second intermesh devices, anti-bore devices, anti-chamber devices) through the control panels 9, 16, and 19 and detecting the amount of movement of the mechanical devices. , 18) and the values measured from the flatness (upper and lower) measuring sensors 20 and 21 are received through the flatness (upper and lower) measuring sensor control panel 22 to achieve a flatness target of the product. Value and error value to determine the moving direction of the flatness compensation device, and through the motor control panel (9, 16, 19) until the flatness reaches the target value, Anti-bogie device, anti-chamber device) The automatic control of the next step of the calibration so as to produce a product will be written.

FIG. 3 is a detailed circuit diagram illustrating the detailed configuration and operation principle of the flatness (up and down) measurement sensor, in particular, the X-ray sensor of FIG. 2. .

As shown in FIG. 3, the detection sensor (X-ray) measures the flatness of the strip while reciprocating from the drive side to the work side with respect to the strip. In the X-ray tube 20a, the X-ray generator 50 When the voltage of [KV] is supplied, the X-rays are emitted through the filter 20b toward the strip 1, and the electrons of the fluorescent X-rays bounced off the strip 1 are again transferred to the filters 20c and 20d by the high voltage power supply 20p. Is converted into a current (mA) received from the connected ion chamber (20e, 20f) and the current is converted into a voltage in the preamp (20g, 20h) to obtain the desired output voltage (0 ~ 10V).

In addition, the output voltage is adjusted by using the amplification resistors Ra and Rb. The output voltage is received by the main control panel 10 and compared with the preset data value to determine the flatness (upper and lower) for the strip. As a result of the actual work, a signal corresponding to the working error is transmitted to the first and second intermesh devices 2 and 3, the anti-bore device 12, and the anti-chamber device 13, which are the flatness compensation devices. Open or close the machine to readjust the flatness and display the result on the monitoring screen for the user to know.

4A to 4C are flowcharts illustrating a signal control process performed by the automatic control apparatus for correcting flatness of a tension leveler according to the present invention. The overall signal control process of the main control panel is shown in FIG. 4A. And the comparison judgment processing (102-116), the signal output process (117-129) according to the operation selection of Figure 4c and the flatness measurement process (130-133) of Figure 4b can be described, The control operations for the first and second intermeshing devices 2 and 3, the antibore device 12, and the antichamber device 13 will be described separately.

First, in the information processing process that is commonly applied, the host computer receives the movement target value for each device from the host computer 11 to execute information processing for each device (100), and moves the movement target value for each device (first). 2, separate intermeshing device, anti-bottle device, anti-chamber device) and apply (101).

Next, when the open / close control operation of the first and second intermesh devices 2 and 3 is described, the comparison determination process receives the movement target value coming from the step 100 and then performs step 102. Compares the current position values of the first and second intermesh apparatuses 2 and 3 to the moving direction of the first and second intermesh apparatuses 2 and 3 according to the comparison condition (moving target value> current position value). After the determination, it is sent to the flatness measurement determination step (103, 104). In the determination of whether the flatness is measured (103, 105), the signal output is determined depending on whether the flatness is measured or not. When the flatness is not measured, the signal is sent to the signal combination steps (117, 119). When the measurement is started, the data is sent to the respective arithmetic processing steps 104 and 106 for the measured values 1 and 2, respectively.

Meanwhile, in the flatness measurement process, each measurement value is converted 132 from the upper error measurement value 1 130 and the lower error measurement value 2 131 or the detection device is defective (measurement value 1 ≤ +20 mm, or measurement value 2). If ≥-20mm), it is determined (133).

In the arithmetic processing steps 104 and 106, the measurement value comes from the measurement value conversion processing step 132 of the flatness measuring step and the signal output step 117 according to the following condition (moving target value + measured value 1, 2). , 119).

In the signal combination step 117, the signal transmitted from the operation mode selection step 129 and the steps 103 and 104 is received only when the signal transmitted from the detection device failure determination step 133 is normal. If satisfied, the signal is sent to the output signal generation step 118. In this step 118, the open signal of the first and second intermesh devices 2 and 3 is finally passed through the holding time for 2 sec to prevent the malfunction of the output signal. Will output

In the signal combination step 119, if the signal transmitted from the operation mode selection step 129 and the steps 105 and 106 is satisfied only when the signal transmitted from the detection device failure determination step 133 is normal, The signal is sent to the output signal generation step 120, and in this step 120, the closed signals of the first and second intermesh devices 2 and 3 are finally output through a holding time of 2 sec in order to prevent a malfunction of the output signal. Done.

Secondly, when the opening / closing control operation state of the anti-bogie device 12 is described, in the comparison determination process, the anti-movement target value separation step 107 for each device receives the moving target value from the information processing step 100. Compared with the current position value of the baud apparatus 12, the moving direction of the anti-baud apparatus is determined according to the following condition (movement target value> current position value), and the determination of the direction of movement of the anti-baud apparatus is determined through step 107. The flatness measurement is sent to the determination step (108, 110), respectively. In this step (108, 110), the signal output is determined according to the presence or absence of the flatness measurement, if the flatness measurement is not sent to the signal combination step (121, 123), the flatness measurement If the case is sent to the comparison judgment step (109, 111).

In addition, the comparison determination step (109, 111) receives the measurement value from the measured value conversion processing step 132 and sends a signal to the signal output step (121, 123) according to the next condition (moving target value + measured value).

In the signal combining step 121, the signal transmitted from the operation mode selection step 129 and the steps 108 and 109 is satisfied only when the signal transmitted from the detection device failure determination step 133 is normal. When the signal is sent to the output signal generation step 122, in step 122, the open signal of the anti-baud apparatus 12 is finally output through a holding time of 2 sec in order to prevent a malfunction of the output signal.

In addition, in the signal combination step 123, the signal transmitted from the operation mode selection step 129 and the steps 110 and 111 is satisfied only when the signal transmitted from the detection device failure determination step 133 is normal. When the signal is sent to the output signal generation step 124, the control signal is finally outputted through the holding time of 2 sec in order to prevent a malfunction of the output signal.

Thirdly, the opening / closing control operation state of the anti-chamber device 13 is described. In the comparative determination process, the anti-chamber device 13 is received in the moving direction determination step 112 by receiving the moving target value from the information processing step 100. The direction of movement of the anti-chamber device 13 is determined according to the next condition (moving target value> current position value), and sent to the flatness measurement determination steps 113 and 115. In this step (113, 115), the signal output is determined according to the presence or absence of the flatness measurement. If the flatness measurement is not performed, the signal is sent to the signal combination steps (125, 127). In this case, it is sent to the comparison judgment processing steps 114 and 116.

In this step (114, 116) receives the measured value coming from the measured value conversion processing step 132 and sends a signal to the signal combination step (125, 127) according to the next condition (moving target value + measured value).

In the signal combination step 125, the operation mode selection step 129 and the signals transmitted in the steps 113 and 114 are received only when the signal transmitted from the detection device failure determination step 133 is normal. When the signal is satisfied, a signal is sent to the output signal generation step 126. In this step 126, the open signal of the anti-chamber device 13 is finally output through a holding time of 2 sec in order to prevent a malfunction of the output signal.

In the signal combination step 127, the operation mode selection step 129 and the signals transmitted in the steps 115 and 116 are received only when the signal transmitted from the detection device failure determination step 133 is normal. If satisfied, a signal is sent to the output signal generation step 128. In this step 128, in order to prevent the malfunction of the output signal, the closing signal of the anti-chamber device 13 is finally output through a holding time of 2 sec.

In addition, in the flatness measurement process, the flatness error of the flatness of the product is detected using the principle of the measuring sensor of FIG. 3, and the upper part is based on the equilibrium state of the material 1 (the state where all levels are "0"). When the deflection degree is +20 [mm] to the maximum value (MAX), the detected value is 0 to +20 [mm] (0 to 10 [V]). Detected at 130, and the flatness error of the product flatness is based on the equilibrium state of the material 1 (the state is all "0") to the lower degree of warp -20 [mm] maximum ( MAX), the detected value is 0 ~ -20 [mm] (0 ~ -10 [V]). Therefore, the error is detected in the downward error measurement step 131 compared with the parallel state of the material and converted into the measured value. It is sent to the processing step 132 and the detection device failure determination step 133.

In the measured value processing step 132, the respective upper and lower error values of the flatness coming from the upper error measurement step 130 and the lower error measurement step 131 are received, and the measurement value 1 and the measurement value 2 are separated and compared. Send to each step 104,106,109,111,114,116 of the decision process.

In addition, in the detection device failure determination step 133, it is determined whether there is an abnormality of the flatness measurement sensor by receiving the values from the upper and lower error measurement step 130 and the lower error measurement step 131, and the result of each signal combination step (117, 119, 121, 123, 125, 127). ) To use for output signal judgment.

According to the present invention, by accurately and precisely measuring the flatness error of the actual work result in the tension leveler to be automatically applied immediately to the flatness compensation device to minimize the work error caused by manual work as well as maximize the timely rate Therefore, it is possible to obtain a very beneficial effect of improving the quality of the product by producing a product desired by the consumer and also improving precision and preventing poor flatness of the plated steel sheet produced at the plating factory.

1 is a block diagram of a flatness correction device of a conventional tension leveler

2 is a general configuration diagram of the vertical control automatic correction device of the tension leveler according to an embodiment of the present invention

FIG. 3 is a detailed circuit diagram illustrating an exemplary embodiment of a flatness (up and down) measurement sensor used for measuring flatness in FIG. 2 and an operation principle thereof.

4A to 4C are flowcharts illustrating a signal control process of an automatic control device for correcting flatness of a tension leveler according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: STIP 2,3: Intermesh device

4: tension leveler unit 5,7,14,17: motor

6,8,15,18: Position sensor 9,16,19: Motor control board

10: electrical device main control panel 11: host computer

12: anti-bottle device 13: anti-chamber device

20, 21: flatness (up and down) measuring sensor 22: flatness measuring sensor control panel

23: monitoring screen

Claims (2)

In the up and down bend control device used for the flatness (shape correction) operation of the bending of the material generated during the tension leveling operation of the strip, A flatness measuring sensor installed at a rear end of the tension leveler to measure and output a degree of calibration for the flatness calibration result; A flatness measuring sensor control panel which outputs a driving signal to the flatness measuring sensor and transmits a flatness calibration degree measurement result of the strip detected by each sensor to a main control panel; The movement range of the shape correction compensators for the moving target value is calculated by reflecting the measurement result of the flatness measuring sensor, and the first and second intermesh devices, the anti-both device, and the anti-chamber device which are the shape correction compensators, respectively. Command to send shape command to shape correction, and measure flatness setting target value for coil to work and product flatness error measurement and compensation control for work result to display the work result to monitor through the screen. Automatic control device of the upper and lower tune of the tension leveler, characterized in that it comprises an electric device main control panel. A first step of receiving information on a work material from a higher level computer, determining a moving target value of the flatness correction devices, and classifying each device by each device; The first and second intermeshing devices, the moving motor control panel, the upper music device moving motor control panel, and the lower bending device moving motor control panel, respectively, are provided through the main control panel, which is an electric device, by the determined moving target value. A second step of moving the second intermesh device, the anti-bottle device, and the anti-chamber device, detecting the actual moved position by using each position measuring sensor, and transmitting the detected position value to the main control panel which is an electric device; ; The upper and lower sides of the tension leveler, characterized in that the third step to precisely control the flatness of the product by comparing the position value received from the position measuring sensor for each device and the flatness measurement value received from the flatness measurement sensor of the material Automatic song control method.