CN102950168B - Automatic centering logic numerical control device of cold-rolled strip steel uncoiler - Google Patents
Automatic centering logic numerical control device of cold-rolled strip steel uncoiler Download PDFInfo
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- CN102950168B CN102950168B CN201110242401.4A CN201110242401A CN102950168B CN 102950168 B CN102950168 B CN 102950168B CN 201110242401 A CN201110242401 A CN 201110242401A CN 102950168 B CN102950168 B CN 102950168B
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Abstract
The invention discloses an automatic centering logic numerical control device of a cold-rolled strip steel uncoiler. The device adopts three infrared photoelectric sensors to detect the strip steel deviation and the strip steel uncoiling threading, adopts two electromagnetic induction switches to detect the displacement signal of the uncoiler, adopts a limit switch to detect the movement limit of the width fixing block on a screw, and adopts a velocity measurement generator to detect the velocity signal of the driving motor of the uncoiler and to feedback the velocity signal to a proportion amplifier; a detection signal is provided to a logic control circuit formed by a button and a relay; and the control circuit controls an uncoiler pedestal centering, deviation correcting and width fixing execution mechanism to realize the uncoiler pedestal automatic centering, strip steel uncoiling threading detection, strip steel automatic edge tracking and width fixing, strip steel deviation correction functions, so the equipment maintenance cost can be effectively reduced, and the normal running of a cold rolling unit is guaranteed.
Description
Technical field
The present invention relates to a kind of cold-strip steel uncoiler automatic centering logic numerical control device.
Background technology
Can transverse shifting between cold-rolling mill processing uncoiler common process transmission side, fore side, under centralising device control, retainer belt steel is in production line of rolling mill center.
Drive motors drives uncoiler hypertonic axle to realize coil of strip uncoiling by gearbox, after coil of strip uncoiling, be with steel to move ahead in C type frame, a screw mandrel for screw thread is in opposite directions installed on C type frame, screw mandrel two ends are respectively equipped with fixed width piece, screw mandrel drives by fixed width motor, according to strip width by fixed width piece with realize with steel the width at C type frame, the transverse shifting of uncoiler passes through Driven by Hydraulic Cylinder, hydraulic cylinder is by proportional amplifier and commutation proportional valve control, and promotes drive motors, gearbox and uncoiler entirety transverse shifting.
The centralising device of former cold-rolling mill processing uncoiler adopts the strip deviation correction control system of German EMG, and its detecting head is that analog signals becomes with side-play amount, changes to+10V at-10V.After detecting head damages, due to price, and general not in stock (approximately 60,000 yuan of a pair of probes, one approximately 70,000 yuan, cover die control device), spare part ordering cycle needs 4 months, probe damages and causes whole control system to work without spare part, has had a strong impact on thus the normal operation of cold rolling unit, has reduced production efficiency.
Summary of the invention
Technical problem to be solved by this invention is to improve a kind of cold-strip steel uncoiler automatic centering logic numerical control device, this device can be realized in uncoiler base automatic seeking, band steel uncoiling threading surveys, is with steel automatic seeking limit fixed width, strip running deviation to correct function, effectively reduce standby redundancy and the cost of overhaul, ensure the normal operation of cold rolling unit, improved production efficiency.
For solving the problems of the technologies described above, cold-strip steel uncoiler automatic centering logic numerical control device of the present invention comprises control power supply, the uncoiler being driven by drive motors and gearbox, be located at the C type frame in uncoiler front, be located at the threaded screw rod in opposite directions of C type frame one side, be located at respectively the fixed width piece at screw mandrel two ends, drive the fixed width motor of screw mandrel, control the traversing hydraulic cylinder of uncoiler and control proportional amplifier and the commutation proportioning valve of hydraulic cylinder, this device also comprises the tachometer generator that connects described drive motors rotating shaft, the first infrared photoelectric sensor, the second infrared photoelectric sensor, the 3rd infrared photoelectric sensor, the first electromagnetic induction switch, the second electromagnetic induction switch, with the limit switch of normally-closed contact, often drive button, with the first relay of a normally opened contact and two normally-closed contacts, with the second relay of a normally opened contact and two normally-closed contacts, with the 3rd relay of two normally opened contacts and two normally-closed contacts, with the 4th relay of a normally opened contact, with the 5th relay of two normally opened contacts, with the 6th relay of a normally opened contact and a normally-closed contact, the 7th relay with a normally-closed contact and the 8th relay with three normally opened contacts and three normally-closed contacts, the transmitting tube of described the first infrared photoelectric sensor and the second infrared photoelectric sensor and receiving tube are located at respectively upper and lower 2 and be positioned at described screw mandrel two ends fixed width piece linear position of described C type frame, the receiving tube of described the 3rd infrared photoelectric sensor is located at described screw mandrel top, transmitting tube is located at described C type frame mid point below, described limit switch is positioned at described screw mandrel one end, described the first electromagnetic induction switch and the second electromagnetic induction switch respectively interval are located on the firm banking of described gearbox and described the first electromagnetic induction switch is positioned at gearbox middle position, the second electromagnetic induction switch is positioned at gearbox one side outer end, described the first infrared photoelectric sensor, the second infrared photoelectric sensor and the transmitting tube of the 3rd infrared photoelectric sensor are connected respectively the positive and negative terminal of described control power supply, the contact of described the first infrared photoelectric sensor receiving tube connects described control power supply positive and negative terminal after being connected in series described the first relay coil, the contact of described the second infrared photoelectric sensor receiving tube connects described control power supply positive and negative terminal after being connected in series described the second relay coil, the contact of described the 3rd infrared photoelectric sensor receiving tube connects described control power supply positive and negative terminal after being connected in series described the 3rd relay coil, described the 4th relay coil is connected described control power supply positive and negative terminal after being connected in series respectively the 3rd normally-closed contact of described the first relay and the 3rd normally-closed contact of the second relay, after described the first normally opened contact parallel connection of often driving button and the 5th relay, be connected in series successively the 5th relay coil, the normally-closed contact of the 7th relay, after the 6th normally-closed contact of the 8th relay, connect described control power supply positive and negative terminal, described the 6th relay coil and described the 5th relay coil are connected in parallel, described the 7th relay coil connects described control power supply positive and negative terminal after being connected in series described the first electromagnetic induction switch contact, described the 8th relay coil connects described control power supply positive and negative terminal after being connected in series described the second electromagnetic induction switch contact, the 3rd normally opened contact of described the 8th relay is parallel to described the second two ends, electromagnetic induction switch contact after being connected in series with the second normally opened contact of the 6th relay, the 3rd normally-closed contact of described the 3rd relay is connected described control power positive end and fixed width motor anode with after the normally opened contact of the 4th relay serial connection, the 4th normally-closed contact of described the 3rd relay is connected described control power supply negative terminal and fixed width motor negative terminal with after limit switch normally-closed contact serial connection, the first normally opened contact of described the 3rd relay connects between the 3rd normally-closed contact and the normally opened contact of the 4th relay of described control power supply negative terminal and the 3rd relay, the second normally opened contact of described the 3rd relay connects described control power positive end and fixed width motor negative terminal, the power end of described proportional amplifier connects the positive and negative terminal of described control power supply, the signal output part of described tachometer generator connects the signal input part of described proportional amplifier, the second normally opened contact of described the 5th relay, the 4th normally-closed contact of the 8th relay, the second normally-closed contact of the first relay, the first normally-closed contact of the 6th relay is connected in series the signal output positive and negative terminal of the described proportional amplifier of rear connection successively, the first normally-closed contact of the first normally opened contact of described the 8th relay and the 6th relay is connected in parallel, the first normally opened contact of described the first relay, commutation proportioning valve, the second normally-closed contact of the second relay, 5 constant virtues closed contact of the 8th relay is connected in series the signal output positive and negative terminal of the described proportional amplifier of rear connection successively, the first normally opened contact of described the first relay is parallel to the 4th normally-closed contact two ends of the second normally opened contact and the 8th relay of described the 5th relay, the first normally opened contact of described the second relay is connected between the signal output plus terminal and commutation proportioning valve and the second normally-closed contact of the second relay of described proportional amplifier afterwards with the second normally opened contact parallel connection of the 8th relay.
Further, this device also comprises diode, and second normally opened contact one end, the negative electrode of the 6th relay connects described the 8th relay coil one end described in the anodic bonding of described diode.
Because cold-strip steel uncoiler automatic centering logic numerical control device of the present invention has adopted technique scheme, be that this device adopts two infrared photoelectric sensors to detect strip running deviation, an infrared photoelectric sensor detects band steel uncoiling threading, two electromagnetic induction switch detect uncoiler displacement signal, limit switch detects the displacement limits of fixed width piece on screw mandrel, the drive motors rate signal that tachometer generator detects uncoiler feeds back to proportional amplifier, and detection signal is provided to having a button and eight loop control logics that relay forms, control loop is controlled respectively fixed width motor, commutation proportioning valve moves as required, commutation proportioning valve provides signal by proportional amplifier and drives hydraulic cylinder action to realize the lateral displacement of uncoiler, fixed width motor drives screw mandrel action to realize infrared photoelectric sensor fixed width by connecting rod, this device can be realized in uncoiler base automatic seeking, band steel uncoiling threading surveys, is with steel automatic seeking limit fixed width, strip running deviation to correct function, effectively reduces standby redundancy and the cost of overhaul, has ensured the normal operation of cold rolling unit, has improved production efficiency.
Brief description of the drawings
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
Fig. 1 is that this cold-strip steel uncoiler automatic centering logic numerical control device element is arranged schematic diagram,
Fig. 2 is the principle schematic of this cold-strip steel uncoiler automatic centering logic numerical control device.
Detailed description of the invention
As depicted in figs. 1 and 2, cold-strip steel uncoiler automatic centering logic numerical control device of the present invention comprises controls power supply V, the uncoiler 10 being driven by drive motors 12 and gearbox 11, be located at the C type frame 17 in uncoiler 10 fronts, be located at the threaded screw rod in opposite directions 13 of C type frame 17 1 sides, be located at respectively the fixed width piece 14 at screw mandrel 13 two ends, drive the fixed width motor 19 of screw mandrel 13, control the traversing hydraulic cylinder 18 of uncoiler 10 and control proportional amplifier 21 and the commutation proportioning valve 20 of hydraulic cylinder 18, this device also comprises the tachometer generator 23 that connects described drive motors 12 rotating shafts, the first infrared photoelectric sensor C1, the second infrared photoelectric sensor C2, the 3rd infrared photoelectric sensor C3, the first electromagnetic induction switch K1, the second electromagnetic induction switch K2, with the limit switch K3 of normally-closed contact K31, often open button K4, with the first relay J 1 of a normally opened contact and two normally-closed contacts, with the second relay J 2 of a normally opened contact and two normally-closed contacts, with the 3rd relay J 3 of two normally opened contacts and two normally-closed contacts, with the 4th relay J 4 of a normally opened contact, with the 5th relay J 5 of two normally opened contacts, with the 6th relay J 6 of a normally opened contact and a normally-closed contact, with the 7th relay J 7 and the 8th relay J 8 with three normally opened contacts and three normally-closed contacts of a normally-closed contact, the transmitting tube of described the first infrared photoelectric sensor C1 and the second infrared photoelectric sensor C2 and receiving tube are located at respectively upper and lower 2 and be positioned at described screw mandrel 13 two ends fixed width piece 14 linear positions of described C type frame 17, the receiving tube of described the 3rd infrared photoelectric sensor C3 is located at described screw mandrel 13 tops, transmitting tube is located at described C type frame 17 mid point belows, described limit switch K3 is positioned at described screw mandrel 13 one end, described the first electromagnetic induction switch K1 and the second electromagnetic induction switch K2 respectively interval are located on the firm banking of described gearbox 11 and described the first electromagnetic induction switch K1 is positioned at gearbox 11 middle positions, the second electromagnetic induction switch K2 is positioned at gearbox 11 1 side outer ends, described the first infrared photoelectric sensor C1, the transmitting tube of the second infrared photoelectric sensor C2 and the 3rd infrared photoelectric sensor C3 is connected respectively the positive and negative terminal of described control power supply V, the contact of described the first infrared photoelectric sensor C1 receiving tube connects described control power supply V positive and negative terminal after being connected in series described the first relay J 1 coil, the contact of described the second infrared photoelectric sensor C2 receiving tube connects described control power supply V positive and negative terminal after being connected in series described the second relay J 2 coils, the contact of described the 3rd infrared photoelectric sensor C3 receiving tube connects described control power supply V positive and negative terminal after being connected in series described the 3rd relay J 3 coils, described the 4th relay J coil is connected described control power supply V positive and negative terminal after being connected in series respectively the 3rd normally-closed contact J13 of described the first relay J 1 and the 3rd normally-closed contact J23 of the second relay J 2, after described the first normally opened contact J51 parallel connection of often opening button K4 and the 5th relay J 5, be connected in series successively the 5th relay J 5 coils, the normally-closed contact J71 of the 7th relay J 7, after the 6th normally-closed contact J86 of the 8th relay J 8, connect described control power supply V positive and negative terminal, described the 6th relay J 6 coils are connected with described the 5th relay J 5 coils from parallel connection of coils, described in described the 7th relay J 7 coil tandems, after the first electromagnetic induction switch K1 contact K11, connect described control power supply V positive and negative terminal, described in described the 8th relay J 8 coil tandems, after the second electromagnetic induction switch K2 contact K21, connect described control power supply V positive and negative terminal, the 3rd normally opened contact J83 of described the 8th relay J 8 is parallel to described the second K21 two ends, electromagnetic induction switch K2 contact after being connected in series with the second normally opened contact J62 of the 6th relay J 6, the first normally-closed contact J33 of described the 3rd relay J 3 is connected described control power supply V anode and fixed width motor 19 anodes with after the normally opened contact J41 of the 4th relay J 4 serial connection, the second normally-closed contact J34 of described the 3rd relay J 3 is connected described control power supply V negative terminal and fixed width motor 19 negative terminals with after limit switch K3 normally-closed contact K31 serial connection, the first normally opened contact J31 of described the 3rd relay J 3 connects between the first normally-closed contact J33 of described control power supply V negative terminal and the 3rd relay J 3 and the normally opened contact J41 of the 4th relay J 4, the second normally opened contact J32 of described the 3rd relay J 3 connects described control power supply V anode and fixed width motor 19 negative terminals, the power end of described proportional amplifier 21 connects the positive and negative terminal of described control power supply V, the signal output part of described tachometer generator 23 connects the signal input part of described proportional amplifier 21, the second normally opened contact J52 of described the 5th relay J 5, the first normally-closed contact J84 of the 8th relay J 8, the second normally-closed contact J12 of the first relay J 1, the first normally-closed contact J61 of the 6th relay J 6 is connected in series the signal output positive and negative terminal of the described proportional amplifier 21 of rear connection successively, the first normally opened contact J81 of described the 8th relay J 8 and the first normally-closed contact J61 of the 6th relay J 6 are connected in parallel, the first normally opened contact J11 of described the first relay J 1, commutation proportioning valve 20, the second normally-closed contact J22 of the second relay J 2, the second normally-closed contact J85 of the 8th relay J 8 is connected in series the signal output positive and negative terminal of the described proportional amplifier 21 of rear connection successively, the first normally opened contact J11 of described the first relay J 1 is parallel to the second normally opened contact J52 of described the 5th relay J 5 and the first normally-closed contact J84 two ends of the 8th relay J 8, the first normally opened contact J21 of described the second relay J 2 is connected between the signal output plus terminal and commutation proportioning valve 20 and the second normally-closed contact J22 of the second relay J 2 of described proportional amplifier 21 afterwards with the second normally opened contact J82 parallel connection of the 8th relay J 8.
Further, this device also comprises diode D, and second normally opened contact J62 one end, the negative electrode of the 6th relay J 6 connects described the 8th relay J 8 coil one end described in the anodic bonding of described diode D.Diode D arranges the release that has ensured the 8th relay J 8, has avoided the misoperation of the 8th relay J 8, thereby has further ensured the reliability of logic control.
This device can be realized function in uncoiler support automatic seeking, at uncoiler gearbox 11 mid points, sensing chip 24 is set, while being positioned at the first electromagnetic induction switch K1 left side as sensing chip 24, first press and often open button K4, support starts in automatic seeking, the 5th relay J 5 obtains electric adhesive, its first normally opened contact J51 closure makes the 5th relay J 5 self-insurances, now the 6th relay J 6 adhesive thereupon, the second normally opened contact J52 closure of the 5th relay J 5, commutation proportioning valve 20 forwards obtain electric and drive hydraulic cylinder 18 to promote drive motors 12, gearbox 11, uncoiler 10 entirety move right, in the time that sensing chip 24 moves on to the first electromagnetic induction switch K1, the first electromagnetic induction switch K1 contact K11 closure, the 7th relay J 7 adhesives, its normally-closed contact J71 disconnects, the 5th relay J 5 dead electricity discharge, 20 power-off of commutation proportioning valve, support puts in place in seeking.While being positioned at the first electromagnetic induction switch K1 right side as sensing chip 24, press and often open button K4, now described above, hydraulic cylinder 18 moves right, in the time that sensing chip 24 moves to the second electromagnetic induction switch K2, the contact K21 closure of the second electromagnetic induction switch K2, the 8th relay J 8 obtains electric adhesive, the first normally opened contact J81 of the 8th relay J 8, the second normally opened contact J82 closure, commutation proportioning valve 20 is electricly reverse, hydraulic cylinder 18 travelling backwards, now the 3rd normally opened contact J83 of the 8th relay J 8 is closed connects with diode D the 8th relay J 8 self-insurances through original the second normally opened contact J62 of closed the 6th relay J 6 simultaneously, in the time that sensing chip 24 is got back to the first electromagnetic induction switch K1, the 7th relay J 7 obtains electric adhesive, its normally-closed contact J71 disconnects, the 5th relay J 5 power-off discharge, in finishing stand automatic seeking.
Band steel uncoiling threading is surveyed, band steel automatic seeking limit fixed width function, when coil of strip 15 uploads on the hypertonic axle 16 of uncoiler 10, through uncoiling with steel 22 through the transmitting tube and receiving tube of the 3rd infrared photoelectric sensor C3, in the time that the 3rd infrared photoelectric sensor C3 detects band steel 22, the 3rd relay J 3 obtains electric adhesive, its the first normally opened contact J31 and the second normally opened contact J32 closure, the first normally-closed contact J33 disconnects, it is adhesive that the 4th relay J 4 powers on, its normally opened contact J41 closure, now fixed width motor 19 is electricly reverse, and drive screw mandrel 13 to rotate counterclockwise, the synchronous indentation of fixed width piece 14 at screw mandrel 13 two ends, the spacing K3 normally-closed contact K31 that opens recovers conducting, in the time that the first infrared photoelectric sensor C1 and the second infrared photoelectric sensor C2 detect band steel 22 edge, the first relay J 1 and the second relay J 2 obtain electric adhesive, the 3rd normally-closed contact J23 of the 3rd normally-closed contact J13 of the first relay J 1 and the second relay J 2 disconnects, the 4th relay J 4 discharges, its normally opened contact J41 disconnects, 19 stalls of fixed width motor, now be with steel 22 width to determine, thereby having realized band steel uncoiling threading surveys and automatic seeking limit fixed width function.When coil of strip 15 uncoilings complete, when between the transmitting tube of the 3rd infrared photoelectric sensor C3 and receiving tube, nothing is with steel 22, adhesive when the 3rd relay J 3 discharges, the 4th relay J 4 powers on, fixed width motor 19 forwards obtain electric, drive screw mandrel 13 to clockwise rotate, the fixed width piece 14 at screw mandrel 13 two ends is synchronously expanded, until fixed width piece 14 is touched limit switch K3, limit switch K3 normally-closed contact K31 is disconnected, 19 stalls of fixed width motor.
Strip running deviation is corrected function, when band steel 22 advances between two parties, be positioned at the first infrared photoelectric sensor C1 and the equal no signal of the second infrared photoelectric sensor C2 with steel 22 both sides, in the time of band steel 22 left avertence, the first infrared photoelectric sensor C1 obtains signal, the second infrared photoelectric sensor C2 no signal, the first relay J 1 obtains electric adhesive, its first normally opened contact J11 closure, proportional amplifier 21 is exported proportioning valve 20 forwards that make to commutate and is obtained electric, drive hydraulic cylinder 18 to promote to the right, drive uncoiler 10 to move to right, now be with steel 22 to rectify a deviation till the first infrared photoelectric sensor C1 no signal to the right, in the time of band steel 22 right avertence, the first infrared photoelectric sensor C1 no signal, the second infrared photoelectric sensor C2 obtains signal, the second relay J 2 obtains electric adhesive, its first normally opened contact J21 closure, it is electricly reverse that proportional amplifier 21 is exported the proportioning valve 20 that makes to commutate, and hydraulic cylinder 18 is retracted left, drive uncoiler 10 to move to left, be now with steel 22 to rectify a deviation till the second infrared photoelectric sensor C2 no signal left, thereby realize the effect that can rectify a deviation with steel 22 left and right.
In this device, tachometer generator 23 produces 1.8-4VDC signal with drive motors 12 rotation speed change of uncoiler 10, and input proportional amplifier 21, the flow of the output control commutation proportioning valve 20 of proportional amplifier 21, drives uncoiler 10 transverse shiftings to realize commutation proportioning valve 20 by hydraulic cylinder 18.
This device can be replaced the strip deviation correction control system of German EMG completely, and this apparatus structure is simple, easy to maintenance, has greatly reduced equipment cost and maintenance cost, and strip steel deviation is respond well, and centering of strip steel efficiency is high, has effectively ensured the normal operation that steel rolling is produced.
Claims (2)
1. a cold-strip steel uncoiler automatic centering logic numerical control device, comprise control power supply, the uncoiler being driven by drive motors and gearbox, be located at the C type frame in uncoiler front, be located at the threaded screw rod in opposite directions of C type frame one side, be located at respectively the fixed width piece at screw mandrel two ends, drive the fixed width motor of screw mandrel, control the traversing hydraulic cylinder of uncoiler and control proportional amplifier and the commutation proportioning valve of hydraulic cylinder, it is characterized in that: also comprise the tachometer generator that connects described drive motors rotating shaft, the first infrared photoelectric sensor, the second infrared photoelectric sensor, the 3rd infrared photoelectric sensor, the first electromagnetic induction switch, the second electromagnetic induction switch, with the limit switch of normally-closed contact, often drive button, with the first relay of a normally opened contact and two normally-closed contacts, with the second relay of a normally opened contact and two normally-closed contacts, with the 3rd relay of two normally opened contacts and two normally-closed contacts, with the 4th relay of a normally opened contact, with the 5th relay of two normally opened contacts, with the 6th relay of a normally opened contact and a normally-closed contact, the 7th relay with a normally-closed contact and the 8th relay with three normally opened contacts and three normally-closed contacts, the transmitting tube of described the first infrared photoelectric sensor and the second infrared photoelectric sensor and receiving tube are located at respectively upper and lower 2 and be positioned at described screw mandrel two ends fixed width piece linear position of described C type frame, the receiving tube of described the 3rd infrared photoelectric sensor is located at described screw mandrel top, transmitting tube is located at described C type frame mid point below, described limit switch is positioned at described screw mandrel one end, described the first electromagnetic induction switch and the second electromagnetic induction switch respectively interval are located on the firm banking of described gearbox and described the first electromagnetic induction switch is positioned at gearbox middle position, the second electromagnetic induction switch is positioned at gearbox one side outer end, described the first infrared photoelectric sensor, the second infrared photoelectric sensor and the transmitting tube of the 3rd infrared photoelectric sensor are connected respectively the positive and negative terminal of described control power supply, the contact of described the first infrared photoelectric sensor receiving tube connects described control power supply positive and negative terminal after being connected in series described the first relay coil, the contact of described the second infrared photoelectric sensor receiving tube connects described control power supply positive and negative terminal after being connected in series described the second relay coil, the contact of described the 3rd infrared photoelectric sensor receiving tube connects described control power supply positive and negative terminal after being connected in series described the 3rd relay coil, described the 4th relay coil is connected described control power supply positive and negative terminal after being connected in series respectively the 3rd normally-closed contact of described the first relay and the 3rd normally-closed contact of the second relay, after described the first normally opened contact parallel connection of often driving button and the 5th relay, be connected in series successively the 5th relay coil, the normally-closed contact of the 7th relay, after the 6th normally-closed contact of the 8th relay, connect described control power supply positive and negative terminal, described the 6th relay coil and described the 5th relay coil are connected in parallel, described the 7th relay coil connects described control power supply positive and negative terminal after being connected in series described the first electromagnetic induction switch contact, described the 8th relay coil connects described control power supply positive and negative terminal after being connected in series described the second electromagnetic induction switch contact, the 3rd normally opened contact of described the 8th relay is parallel to described the second two ends, electromagnetic induction switch contact after being connected in series with the second normally opened contact of the 6th relay, the 3rd normally-closed contact of described the 3rd relay is connected described control power positive end and fixed width motor anode with after the normally opened contact of the 4th relay serial connection, the 4th normally-closed contact of described the 3rd relay is connected described control power supply negative terminal and fixed width motor negative terminal with after limit switch normally-closed contact serial connection, the first normally opened contact of described the 3rd relay connects between the 3rd normally-closed contact and the normally opened contact of the 4th relay of described control power supply negative terminal and the 3rd relay, the second normally opened contact of described the 3rd relay connects described control power positive end and fixed width motor negative terminal, the power end of described proportional amplifier connects the positive and negative terminal of described control power supply, the signal output part of described tachometer generator connects the signal input part of described proportional amplifier, the second normally opened contact of described the 5th relay, the 4th normally-closed contact of the 8th relay, the second normally-closed contact of the first relay, the first normally-closed contact of the 6th relay is connected in series the signal output positive and negative terminal of the described proportional amplifier of rear connection successively, the first normally-closed contact of the first normally opened contact of described the 8th relay and the 6th relay is connected in parallel, the first normally opened contact of described the first relay, commutation proportioning valve, the second normally-closed contact of the second relay, 5 constant virtues closed contact of the 8th relay is connected in series the signal output positive and negative terminal of the described proportional amplifier of rear connection successively, the first normally opened contact of described the first relay is parallel to the 4th normally-closed contact two ends of the second normally opened contact and the 8th relay of described the 5th relay, the first normally opened contact of described the second relay is connected between the signal output plus terminal and commutation proportioning valve and the second normally-closed contact of the second relay of described proportional amplifier afterwards with the second normally opened contact parallel connection of the 8th relay.
2. cold-strip steel uncoiler automatic centering logic numerical control device according to claim 1, it is characterized in that: this device also comprises diode, second normally opened contact one end, the negative electrode of the 6th relay connects described the 8th relay coil one end described in the anodic bonding of described diode.
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| CN201110242401.4A CN102950168B (en) | 2011-08-23 | 2011-08-23 | Automatic centering logic numerical control device of cold-rolled strip steel uncoiler |
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| CN201110242401.4A CN102950168B (en) | 2011-08-23 | 2011-08-23 | Automatic centering logic numerical control device of cold-rolled strip steel uncoiler |
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| CN106475429A (en) * | 2015-08-31 | 2017-03-08 | 宝山钢铁股份有限公司 | Strip steel uncoiling automatic correction method and device |
| CN105903771B (en) * | 2016-05-18 | 2017-12-01 | 华峰日轻铝业股份有限公司 | The device and its investigating method and hot-rolling mill of a kind of automatic measuring and controlling hot-rolling mill running deviation value |
| CN106734237B (en) * | 2016-12-23 | 2019-04-09 | 深圳市浩能科技有限公司 | A kind of method for correcting error and system of rolling line |
| CN107153432A (en) * | 2017-06-05 | 2017-09-12 | 上海科星电液控制设备有限公司 | A kind of correction centering automatic control system based on digitized processing |
| CN110076215B (en) * | 2019-05-07 | 2021-08-20 | 上海世震液压成套设备制造有限公司 | Uncoiler and deviation correction control system and method thereof |
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| CN102019305A (en) * | 2009-09-22 | 2011-04-20 | 宁波宝新不锈钢有限公司 | Width-variable centering control device in strip steel processing line |
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