CN101314166A - Automatic thickness control system for roller mill - Google Patents
Automatic thickness control system for roller mill Download PDFInfo
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- CN101314166A CN101314166A CNA2008100236625A CN200810023662A CN101314166A CN 101314166 A CN101314166 A CN 101314166A CN A2008100236625 A CNA2008100236625 A CN A2008100236625A CN 200810023662 A CN200810023662 A CN 200810023662A CN 101314166 A CN101314166 A CN 101314166A
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Abstract
The invention discloses an automatic thickness control system for a rolling mill, which comprises the rolling mill. The system is characterized in that: the system is also provided with a computer, a servo mechanism and a screwdown oil cylinder. The screwdown oil cylinder is positioned on the upper part of the rolling mill, a piston rod of the screwdown oil cylinder is downward and is connected with bearing supports at both ends of a working roll on the rolling mill, and an oil inlet and an oil outlet of the screwdown oil cylinder are respectively communicated with an oil inlet and an oil outlet of the servo mechanism. A control end of the servo mechanism is connected with the computer. The screwdown oil cylinder is provided with a position sensor which is connected with the computer by means of a conducting wire. An inlet side and an outlet side of the rolling mill are respectively provided with an inlet velocity measuring roll and an outlet velocity measuring roll which are both provided with encoders, and the two encoders are both connected with a tachometer circuit in the computer by means of conducting wires. The inlet side and the outlet side of the rolling mill are respectively provided with an inlet thickness tester and an outlet thickness tester which are both connected with a deviation port of the computer by means of conducting wires. The automatic thickness control system can guarantee the rolling quality of strip materials so that rolled strip materials have higher quality, and is applicable to control the rolling thickness of the strip materials.
Description
Technical field
The present invention relates to automatic control system.Specifically, be the automatic gauge control system that utilizes in the cold-rolling mill rolled strip process, is used for controlling thickness of strip.
Background technology
All know in the band processing industry,, in the operation of rolling, need its thickness is controlled at band for guaranteeing the rolling quality of band.Conventional method is to adopt calibrator the rolling band actual (real) thickness that comes out to be measured and shown and fed back to the operator by display screen, is come the rolling thickness of band is regulated by the gap of adjusting between the milling train double-working according to technological requirement by the operator.Adjust and need the time owing to be shown to the breaker roll gap from display screen, by strip several rice of having passed by, and the thickness of these several meters bands is with to regulate afterwards rolling thickness of strip different in this time.In addition, in the strip-rolling process, the distortion of operation roll of mill and variation of temperature all may feed through to by the thickness of strip, and are changed by the thickness of strip that these factors cause, can't adopt said method to regulate.Therefore, the strip quality that adopts said method to roll out is difficult to guarantee, and is of low quality.
Summary of the invention
The problem to be solved in the present invention provides a kind of automatic thickness control system for roller mill.Adopt this automatic gauge control system, can guarantee the rolling quality of band, rolling strip quality is higher.
For addressing the above problem, take following technical scheme:
Automatic thickness control system for roller mill of the present invention comprises milling train.Be characterized in also comprising computer, servo control mechanism and depress oil cylinder.Depress oil cylinder is in the milling train top, and its piston rod links to each other down and with the bearing block at milling train top working roll two ends, and its oil inlet and outlet is communicated with the oil-in that goes out of servo control mechanism respectively.The control end of servo control mechanism links to each other with computer.Position sensor on the depress oil cylinder, this position sensor links to each other with computer by lead.The entrance side of milling train and outlet side have inlet roller and the outlet roller that tests the speed that tests the speed respectively, and this two tests the speed and encoder is all arranged on the roller, and two encoders all link to each other with tachometer circuit in the computer by lead.The entrance side of milling train and outlet side have inlet calibrator and outlet calibrator respectively, and this two calibrator all links to each other with the deviation port of computer by lead.
Wherein, the inlet calibrator is in inlet and tests the speed between roller and the milling train, and the outlet calibrator is in outlet and tests the speed between roller and the milling train.
Take such scheme, have the following advantages:
Because the present invention is furnished with computer, servo control mechanism and depress oil cylinder on milling train.Depress oil cylinder is in the milling train top, and its piston rod links to each other down and with the bearing block at top working roll two ends, and its oil inlet and outlet is communicated with the oil-in that goes out of servo control mechanism respectively.The control end of servo control mechanism links to each other with computer.Position sensor on the depress oil cylinder, this position sensor links to each other with computer by lead.The entrance side of milling train and outlet side have inlet roller and the outlet roller that tests the speed that tests the speed respectively, and this two tests the speed and encoder is all arranged on the roller, and two encoders all link to each other with computer by lead.The entrance side of milling train and outlet side have inlet calibrator and outlet calibrator respectively, and this two calibrator all links to each other with the deviation port of computer by lead.During work, read the band actual size after rolling and convert the signal of telecommunication to and give computer, the thickness of strip and the setting value of import and export are compared by computer by test the speed roller and outlet calibrator of outlet.As the thickness of strip that rolls out is bigger or little than setting value, and computer automatically instruction of output is given servo control mechanism, makes by servo control mechanism under the piston rod of depress oil cylinder to stretch (pressing to working roll) or withdrawal.Meanwhile, position sensor on the depress oil cylinder piston rod can pass to computer with position signalling, computer is compared by the signal that the outlet signal sent here of calibrator and position sensor are sent here again, the piston rod of depress oil cylinder is stretched out or withdraw according to comparison result, thereby realized by the THICKNESS CONTROL of strip.Compare with conventional method, whole process all is to finish automatically, need not manual adjustment, makes the rolling quality of band improve greatly.
Description of drawings
Accompanying drawing is an automatic gauge control system schematic diagram of the present invention.
The specific embodiment
As shown in drawings, automatic gauge control system of the present invention comprises milling train, computer 7, servo control mechanism 6 and depress oil cylinder 9.Servo control mechanism 6 wherein is a servo valve.Milling train is provided with top working roll 10 and bottom working roll 3.Depress oil cylinder 9 is in milling train top, and its piston rod links to each other down and with the bearing block at milling train top working roll 10 two ends, and it joins by the going out of oil pipe and servo control mechanism 6, oil-in respectively into and out of hydraulic fluid port.The control end of servo control mechanism 6 links to each other with computer 7 by lead.Position sensor 8 is installed on the piston rod of depress oil cylinder 9, and this position sensor links to each other by the control circuit of depressing in lead and the computer 7.The entrance side of milling train and outlet side are respectively arranged with inlet roller 1 and the outlet roller 5 that tests the speed that tests the speed, and this two tests the speed and encoder all is installed on the roller, and two encoders all link to each other by the tachometer circuit of lead with computer 7.The entrance side of milling train and outlet side are respectively arranged with inlet calibrator 2 and outlet calibrator 4, and this two calibrator all links to each other with the deviation port of computer 7 by lead.
Wherein, inlet calibrator 2 is in inlet and tests the speed between roller 1 and the milling train, and outlet calibrator 4 is in outlet and tests the speed between roller 5 and the milling train.
During work, test earlier, and the signal data of check is inputed to computer 7 by the inlet thickness that roller 1 and inlet calibrator 2 treat strip that tests the speed.After computer 7 receives these thickness signal data, compare with predefined rolling thickness data, and give servo control mechanism 6 with comparative result, pass to depress oil cylinder 9 by servo control mechanism 6, thereby determine whether 9 pairs of milling train top working rolls of depress oil cylinder 10 press down or what press down.And when by strip by behind the mill milling, read the band actual size after rolling and convert the signal of telecommunication to and give computer 7 by test the speed roller 5 and outlet calibrator 4 of outlet, compare by the thickness of strip and the setting value of 7 pairs of import and exports of computer.As the thickness of strip that rolls out is bigger or little than setting value, and computer 7 instruction of output is automatically given servo control mechanism 6, makes by servo control mechanism 6 under the piston rod of depress oil cylinder 9 to stretch (pressing to working roll) or withdrawal.Meanwhile, position sensor 8 on depress oil cylinder 9 piston rods can pass to computer 7 with position signalling, computer 7 is compared by the signal that the outlet signal sent here of calibrator 4 and position sensor 8 are sent here again, the piston rod of depress oil cylinder 9 is stretched out or withdraw according to comparison result, thereby realized being controlled automatically by the thickness of strip.
Claims (3)
1. milling train is controlled the seat system automatically with thickness, comprises milling train; It is characterized in that also comprising computer (7), servo control mechanism (6) and depress oil cylinder (9); Depress oil cylinder (9) is in milling train top, and its piston rod links to each other down and with the bearing block at milling train top working roll (10) two ends, and it is communicated with the going out of servo control mechanism (6), oil-in respectively into and out of hydraulic fluid port; The control end of servo control mechanism (6) links to each other with computer (7); Depress oil cylinder (9) is gone up position sensor (8), and this position sensor links to each other with computer (7) by lead; The entrance side of milling train and outlet side have inlet roller (1) and the outlet roller (5) that tests the speed that tests the speed respectively, and this two tests the speed and encoder is all arranged on the roller, and two encoders all link to each other by the interior tachometer circuit of lead and computer (7); The entrance side of milling train and outlet side have inlet calibrator (2) and outlet calibrator (4) respectively, and this two calibrator all links to each other by the deviation port of lead with computer (7).
2. automatic thickness control system for roller mill according to claim 1, the calibrator (2) that it is characterized in that entering the mouth are in inlet and test the speed between roller (1) and the milling train.
3. automatic thickness control system for roller mill according to claim 1, it is characterized in that exporting calibrator (4) be in the outlet test the speed between roller (5) and the milling train.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100236625A CN101314166A (en) | 2008-04-13 | 2008-04-13 | Automatic thickness control system for roller mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100236625A CN101314166A (en) | 2008-04-13 | 2008-04-13 | Automatic thickness control system for roller mill |
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| Publication Number | Publication Date |
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| CN101314166A true CN101314166A (en) | 2008-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100236625A Pending CN101314166A (en) | 2008-04-13 | 2008-04-13 | Automatic thickness control system for roller mill |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672999A (en) * | 2011-03-16 | 2012-09-19 | 上海板机电气制造有限公司 | Method, device and system for controlling thickness of plate blank |
| CN102784802A (en) * | 2011-05-20 | 2012-11-21 | 宝山钢铁股份有限公司 | Device and method for monitoring state of cross cardan shaft of CVC rolling mill |
| CN106017545A (en) * | 2016-05-09 | 2016-10-12 | 广东冠邦科技有限公司 | Planetary rolling mill key parameter online monitoring data acquisition analysis system |
| CN106984651A (en) * | 2017-05-26 | 2017-07-28 | 江苏省沙钢钢铁研究院有限公司 | A kind of on-line control system for improving rolled piece thickness control accuracy |
-
2008
- 2008-04-13 CN CNA2008100236625A patent/CN101314166A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672999A (en) * | 2011-03-16 | 2012-09-19 | 上海板机电气制造有限公司 | Method, device and system for controlling thickness of plate blank |
| CN102672999B (en) * | 2011-03-16 | 2016-01-27 | 上海板机电气制造有限公司 | A kind of slab thickness control method, device and system |
| CN102784802A (en) * | 2011-05-20 | 2012-11-21 | 宝山钢铁股份有限公司 | Device and method for monitoring state of cross cardan shaft of CVC rolling mill |
| CN102784802B (en) * | 2011-05-20 | 2014-10-29 | 宝山钢铁股份有限公司 | Device and method for monitoring state of cross cardan shaft of CVC rolling mill |
| CN106017545A (en) * | 2016-05-09 | 2016-10-12 | 广东冠邦科技有限公司 | Planetary rolling mill key parameter online monitoring data acquisition analysis system |
| CN106984651A (en) * | 2017-05-26 | 2017-07-28 | 江苏省沙钢钢铁研究院有限公司 | A kind of on-line control system for improving rolled piece thickness control accuracy |
| CN106984651B (en) * | 2017-05-26 | 2019-03-01 | 江苏省沙钢钢铁研究院有限公司 | A kind of on-line control system improving rolled piece thickness control accuracy |
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Open date: 20081203 |