JPS6340806A - Plate thickness deviation alarm for rolling mill - Google Patents

Abstract

PURPOSE:To achieve a higher plate thickness accuracy, by outputting an output voltage of a thickness meter amplifier into which is inputted a detection signal of a thickness meter with an acoustic converter as sound corresponding to a deviation status of the thickness to enable the determination of the deviation status of the thickness in real time. CONSTITUTION:An alarm amplifier 4 is made up of a frequency range setting control 42 for a frequency converter 41, a sound volume level converter 43 into which is inputted an output of the frequency converter 41, and a sound volume adjusting control 44 for the converter 43. A thickness deviation signal outputted from a thickness meter amplifier 2 is inputted into the frequency converter 41 and the value of the signal is outputted as voltage. The use of the frequency converter 41 corresponding to a variation range of the output enables the outputting within an humanly audible range of 50-10kHz by the operation of the control 42. An output of the thickness meter amplifier 2 is outputted to a thickness recorder 3 to be recorded as history of a rolled plate material and a sound volume reaching the control 44 from the sound volume level converter 43 is outputted from a speaker SP or an earphone EH.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a plate thickness deviation alarm device for a rolling mill, which is used to recognize the plate thickness deviation state of a plate material during rolling and control the gain, etc. of the rolling mill. Regarding.

(Prior Art) Conventionally, as a means for recognizing the thickness deviation state of a plate material during rolling, as shown in FIG. The thickness recorder 3 is configured to sequentially draw the plate thickness at every moment on a recording paper, and the operator can grasp the rolling result by the height of the waveform drawn on the recording paper, and if the deviation in plate thickness is large, the operator can check the rolling result. If.

The gain, etc. of the automatic plate thickness control system was changed during rolling or during the next rolling.

(Problems with the prior art) By the way, during rolling, it is best for the operator to constantly monitor the state of the waveform drawn by the thickness recorder 3 and check whether the gain etc. are appropriate from the state of the waveform. However, in reality, due to personnel allocation, etc., it is difficult to assign personnel 8 who are solely responsible for the monitoring.

Therefore, in reality, the operator has to check the records from time to time during rolling, or after the rolling is finished.

In such a situation, there are problems in that the state of sheet thickness deviation during rolling cannot be grasped in real time, and it is not possible to set appropriate gains and the like during rolling.

(Object of the Invention) The present invention has been made in order to solve the above-mentioned problems existing in conventional equipment when recognizing the plate thickness deviation state of a plate material during rolling. It is possible to recognize plate thickness deviation status in real time without looking at records.
It is an object of the present invention to provide a plate thickness deviation alarm device for a rolling mill, which allows for consistent setting of gains and the like during rolling, thereby improving plate thickness accuracy.

(Structure of the Invention) The structure of the present invention is a rolling mill configured such that the output voltage of a thickness needle amplifier into which a detection signal of a thickness gauge is input is outputted as a sound corresponding to the degree of plate thickness deviation using an acoustic transducer. This is in the plate thickness deviation alarm device.

(Operation of the Invention) The present invention enables an operator to grasp the thickness deviation state of a plate material being rolled in real time by using a sound corresponding to the degree of deviation.
It has the effect of making it recognizable.

(Example=1) The present invention will be described in detail below according to the example shown in FIGS. 1(a) and 1(b).

FIG. 1(a) is a block diagram showing the basic configuration of this embodiment, where l is a thickness needle, 2 is a thickness gauge amplifier to which the detection signal of the thickness gauge 1 is input, and 10 is Wr? ifA device amplifier 4. This is an acoustic conversion device consisting of a speaker SP and an earphone EH.

As shown in FIG. 1(b), the alarm device amplifier 4 includes a frequency converter 41. Frequency range setting volume 42 of the frequency converter 41. The output of the frequency converter 041 is composed of a volume level converter P343° to which the output is input, and a volume adjustment volume 44 of the volume level converter 43.

The frequency converter 41 receives the thickness deviation signal S output from the thickness gauge amplifier 2 as input. The thickness gauge amplifier 2 normally outputs the thickness deviation signal S as a voltage, so this output voltage is used, and generally the output variation range is 1100ttm/-10V to +100V.
μm/+10 V and frequency 0 to 10011z
Therefore, by using the frequency converter 41 that is appropriately selected according to this, by operating and setting the frequency range setting volume 42, a predetermined range within the human audible range of 50 to 10 KHz.・・・・・・For example, a range of 100 to 100 OH2・・・・・・・・・
-...- can be converted and output.

Incidentally, the output of the thickness gauge amplifier 2 is also outputted to the thickness recorder 3 as in the conventional case, and is recorded as the history of the rolled plate material.

The output of the frequency converter 41 is input to the volume level converter 43, and by operating and setting the sound Wk adjustment volume 44, it can be amplified to a volume audible to the human ear and output from the speaker SP or earphone EH. It is.

Therefore, in this embodiment, without looking at the record of the thickness recorder 3, the operator can measure the frequency components of the plate thickness deviation state of the plate being rolled by using the high and low sound, and the large and small thickness deviation of the plate material by the high and low sound. This allows recognition in real time ξ.

(Example = 2) A second example of the present invention is shown in FIGS. 2(a) and (b).
Therefore, it will be explained in detail.

FIG. 2(a) shows a state in which the thickness gauge amplifier 2 outputs a thickness deviation signal S corresponding to subtle changes in the thickness of the plate material being rolled over time. Multiple levels of limits corresponding to small size, e.g. limits 1 to 3
If each thickness deviation limit is exceeded,
This is a case where the operator is notified by a buzzer or the like with a volume corresponding to the magnitude of the deviation, and the acoustic conversion bag in this embodiment! i! The configuration of 10 is shown in FIG. 2(b).

In FIG. 2(b), each of 53 to 5c is a comparator;
Each of 6a to 6c is a limit setting device, each of 7a to 7c is a sound 11 setting device, and 8 is a buzzer or an earphone.

The limit setter 6a sets the limit 1 of the thickness deviation in FIG. 2(a) to the comparator 5a, and sets the limit less than 2 to the comparator 5b, and the limit setter 6b compares the limit 2 of the thickness deviation in the same figure. The limit setting device 6C can set the limit 3 of the thickness deviation in the same figure to the comparator 5C, respectively.

Each of the volume setting devices 7a to 7C has a volume of 7a<7.
b<7c, and 7a is the comparator 5a.
The signal yes is output in the affirmative.

7b is set to be output from the buzzer or earphone 8 when a signal YES outputted by the comparator 5c is input, and 7c is set to be outputted from the buzzer or earphone 8 when a signal YES outputted by the comparator 5C is inputted.

In the above configuration, the thickness deviation signal S output from the thickness gauge amplifier 2 is input to the comparator 5a, and the comparator 5a compares whether the input thickness deviation is less than or equal to the set limit 1, and whether it is less than or equal to the limit 1. Yes, but since there is no corresponding input sound source, no sound is output, and if it exceeds limit 1, a signal no is output to the comparator 5b. Comparator 5
b compares whether the input thickness deviation is less than or equal to the set limit 2, and if it is less than or equal to limit 2, it outputs a signal yeS to the volume setting device 7a, which causes the volume setting device 7a to turn on the buzzer or earphone depending on the predetermined volume. 8 is output, and if it exceeds limit 2, the signal no is sent to comparator 5C.
Output to. The comparator 5C compares whether the input thickness deviation is less than or equal to the set limit 3, and if it is less than the limit 3, it outputs a signal YES to the volume setting device 7b, which causes the volume setting device 7b to sound a buzzer at a predetermined volume. Alternatively, it is outputted from the earphone 8, and if the limit 3 is exceeded, a signal no is outputted to the volume setting device 7C, and the volume setting device 7C outputs the signal from the buzzer or the earphone 8 according to the predetermined volume.

Therefore, in this embodiment, the operator does not receive an acoustic notification when the thickness deviation of the plate material being rolled is below limit 1, and when the thickness deviation exceeds limit 1 and is below limit 2. The state continues for t1 seconds,
If the sound is small and exceeds limit 2 and is below limit 3, then the state continues for t2 seconds, and if the sound is medium and exceeds limit 3.

During the period of t3 seconds during which this state continues, a loud sound is announced, and the board thickness deviation state can be recognized in real time as soon as the sound is heard, depending on whether the sound is loud, medium, or small.

(Other Examples) The above-mentioned Examples 1 and 2 only disclose one example of the configuration of the acoustic conversion device 10, and at least convert the output voltage of the thickness gauge amplifier into a sound corresponding to the degree of plate thickness deviation. It goes without saying that if a configuration that exhibits an effect is adopted, the objective of the present invention will be achieved by the configuration, and the configuration will fall within the scope of the design matters of the present invention.

In addition to the plate thickness deviation signal based on the strength of the sound, multiple sound sources with different tones, etc. are provided independently, and when the plate thickness deviation exceeds each limit 1 to 3, a corresponding different tone is emitted. May be set.

(Effects of the Invention) By carrying out the present invention, the operator can understand and recognize the sheet thickness deviation state in real time without looking at the records of the thickness recorder during rolling, so the operator can check the operations necessary for rolling and the rolling state. This allows you to focus solely on visual confirmation, making it easier to set appropriate gains during rolling, which contributes to improving plate thickness accuracy, and is prized for its great effects.

[Brief explanation of drawings]

FIGS. 1(a) and 1(b) are block diagrams and electrical circuit diagrams of essential parts showing the configuration of an embodiment of the present invention, respectively, and FIG.
FIG. 2(b) is a block diagram showing another embodiment of the present invention, and FIG. 3 is a block diagram showing a conventional example. 1--1--・--------1----------
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−−−−−−−−Keikou outfit device amph.

Claims (1)

[Claims] 1) In a device for recognizing the thickness deviation state of a plate material during rolling, the output voltage of a thickness gauge amplifier to which the detection signal of the thickness gauge is input is converted into a sound corresponding to the plate thickness deviation state by an acoustic converter. A plate thickness deviation alarm device for a rolling mill configured to output as follows. 2) Claim 1, wherein the acoustic conversion device includes a frequency converter capable of converting the output voltage of the thickness gauge amplifier into an audible frequency, and a volume level converter into which the output of the frequency converter is input. The plate thickness deviation alarm device for the rolling mill described above. 3) The acoustic transducer includes a plurality of comparators, a plurality of limit setters for each of the comparators to set a limit of the output voltage of the thickness gauge amplifier, and a plurality of volume setters to which the output of each of the comparators is input. A plate thickness deviation alarm device for a rolling mill according to claim 1.