CN206382332U - Four roll reversing rollers of band automatic centring device are installed - Google Patents
Four roll reversing rollers of band automatic centring device are installed Download PDFInfo
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- CN206382332U CN206382332U CN201621441950.9U CN201621441950U CN206382332U CN 206382332 U CN206382332 U CN 206382332U CN 201621441950 U CN201621441950 U CN 201621441950U CN 206382332 U CN206382332 U CN 206382332U
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- band
- centring device
- automatic centring
- main body
- milling train
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Abstract
The utility model discloses a kind of four roll reversing rollers for being provided with band automatic centring device, physical location of the band in the operation of rolling can be directly displayed on HMI, need to see the problem of naked eyes go to differentiate or go measurement with tape measure before solving, the accuracy and referring to property of control are improved simultaneously, greatly reduce the manipulation strength of operator, operational risk is reduced, rolling stability is improved and reduces rolling accident.
Description
Technical field
The utility model is related to a kind of four roll reversing rollers for being provided with band automatic centring device.
Background technology
Band automatic centring device (CPC) is main by photo-electric detecting head, high frequency light source emitter, digital electric controller, line
Property position sensor, electrohydraulic servo valve and hydraulic station are constituted.CPC is a continuous closed-loop regulating system, is connected by detecting head
The change in location of walking strip both sides is measured continuously, and the position error signal of strip is input into digital electric controller handles number
According to；The output valve of electric-control system is connected with the electrohydraulic servo valve at hydraulic control station；The position error signal after electro-hydraulic conversion,
Uncoiler is driven to be moved forward and backward by servo valve driving hydraulic jack；Now strip can be also displaced sideways, to adjust sideslip
Strip is returned on predetermined center line, realizes strip automatic centering function.But the function is only applied to single chassis reversable mill
The first passes when band automatic centering, during the rolling of back pass, CPC be not involved in detecting with control export.
The reversible Experimental Rolling Mill of high speed four-roller of Kui Ke chemistry, capital equipment has left coiling machine (carrying floating hydraulic cylinder), rolled
Owner's body, right coiling machine, lubricating system, hydraulic system and electric-control system composition, while feeding end is mounted with EMG on the left of milling train
CPC (band automatic centring device).Rolled strip width range is only 100~200mm, due to the experimental mill total arrangement
Length is substantially suitable with industrial reversable mill, but band is very narrow, because band is under pressure after processing, width of the meeting in band
There is discontinuity phenomenon in degree, cause occur the off-center position of steel band in rolling, broken belt occurs when serious on direction.
CPC carries control system in itself, is the closed-loop control of a completion, and the PLC of not corresponding signal and milling train is communicated.
Due to CPC automatic centering function, when rolling from left to right, it is ensured that band position all the time before milling train is entered
In the center of milling train, it is to avoid cause band in rolling because position of the band before uncoiling is inaccurate or stock roll winding is uneven
When deviate milling train center, the risk of less sideslip.But from the right side turn left rolling when, due to no auxiliary equipment, it is necessary to by
Mill operators by visually observing the steel band position of outlet side, but can not judge the real offset of steel band in operation；Only
After steel band offset exceedes when naked eyes can be differentiated or needs to lean on tape measure, operator can know band
Actual shifts direction, then correct the position of steel band by adjusting roll gap difference during rolling.Because discernable by eye is limited in one's ability, work as hair
During raw larger skew, it may occur that can not be adjusted by changing gap values between rollers, ultimately result in and rolled when winding uneven or serious
The accident of broken belt；Additionally, due to the position with the actual steel band of tape measure is needed, operator can open safety protective door and enter
, there is serious potential safety hazard in danger zone.
Utility model content
The purpose of this utility model is to provide a kind of four roll reversing rollers for being provided with band automatic centring device, and band exists
Physical location in the operation of rolling can be directly displayed on HMI (man-machine interface), need to see that naked eyes go to differentiate before solving
Or the problem of measurement is gone with tape measure, while improving the accuracy of control and referring to property, greatly reduce the operation of operator
Intensity, reduces operational risk, improves rolling stability and reduces rolling accident.
Realizing a kind of technical scheme of above-mentioned purpose is：A kind of four-roller for being provided with band automatic centring device is reversible to roll
Machine, including left coiling machine, milling train main body, right coiling machine and electric-control system, wherein：
The left coiling machine, milling train main body and right coiling machine are set gradually from left to right；
The milling train main body includes upper backup roll, top working roll, bottom working roll and the lower support set gradually from top to bottom
Roller, the front side of the milling train main body is fore side, and the rear side of the milling train main body is transmission side；
The electric-control system includes controller and coupled man-machine interface, the controller and the rolling mill main body phase
Even；
Longitudinal moving device is installed, the longitudinal moving device controls oil using position on rear side of the left coiling machine
Cylinder, the output shaft of the position control cylinder is connected with the left coiling machine；
The band automatic centring device is arranged on the right side of the left coiling machine, and the band automatic centring device is located at
Between the left coiling machine and milling train main body, the center of the band automatic centring device to the center of the milling train main body away from
From for 3252mm；
The band automatic centring device is connected with the position control cylinder；
The band automatic centring device is connected by DP lines with the controller.
Above-mentioned four roll reversing rollers for being provided with band automatic centring device, wherein, the band automatic centring device
Detect the position error signal of band, and by the DP bundle of lines position error signal by I/O module transfers to the controller,
And the position deviation value of band is shown in the man-machine interface.
Above-mentioned four roll reversing rollers for being provided with band automatic centring device, wherein, the band automatic centring device
It is connected with the position control cylinder by the control of PLC signals.
Employ the technical scheme of four roll reversing rollers of the present utility model for being provided with band automatic centring device, band
Physical location in the operation of rolling can be directly displayed on HMI (man-machine interface), need to see that naked eyes are gone point before solving
The problem of distinguishing or measurement is gone with tape measure, while improving the accuracy and referring to property of control, greatly reduces the behaviour of operator
Make intensity, reduce operational risk, improve rolling stability and reduce rolling accident.
Brief description of the drawings
Fig. 1 is the schematic layout pattern of four roll reversing rollers of the present utility model for being provided with band automatic centring device；
Fig. 2 a are the structural representation that band deviates to fore side；
Fig. 2 b are that band automatic centring device corrects the structural representation after strip location；
Fig. 3 is the method for correcting error using four roll reversing rollers of the present utility model for being provided with band automatic centring device
Flow chart；
Fig. 4 a are the structural representation that band is offset to fore side；
Fig. 4 b are the structural representation that band is offset to transmission side.
Embodiment
Utility model people of the present utility model in order to be able to preferably understand the technical solution of the utility model, below
It is described in detail by specifically embodiment combination accompanying drawing：
Fig. 1 and Fig. 2 a are referred to, a kind of four roll reversing rollers for being provided with band automatic centring device 5, including a left side are batched
Machine 1, milling train main body 2, right coiling machine 3 and electric-control system, left coiling machine 1, milling train main body 2 and right coiling machine 3 are from left to right successively
Set；Milling train main body 2 includes upper backup roll 21, top working roll 22, bottom working roll 23 and the lower support set gradually from top to bottom
Roller 24, the front side of milling train main body 2 is fore side, and the rear side of milling train main body 2 is transmission side；Electric-control system include controller and and its
Connected man-machine interface, controller is connected with milling train main body 2；The rear side of left coiling machine 1 is provided with longitudinal moving device, and longitudinal direction is moved
Dynamic device uses position control cylinder 4, and the output shaft of position control cylinder 4 is connected with left coiling machine 1, the band of position control cylinder 4
Vertically moved before and after dynamic left coiling machine 1.Band automatic centring device 5 is arranged on the right side of left coiling machine 1, band automatic centering dress
5 are put to be located between left coiling machine 1 and milling train main body 2, the center of band automatic centring device 5 to the center of milling train main body 5 away from
From for 3252mm；Band automatic centring device 5 is connected with position control cylinder 4；Band automatic centring device 5 passes through DP lines and control
Device processed is connected.Band automatic centring device 5 detects the position error signal of band, and the position error signal leads to by DP bundle of lines
Cross the position deviation value that I/O module transfers show band to controller, and man-machine interface.
Refer to Fig. 2 a to Fig. 4 b, the method for correcting error of above-mentioned four roll reversing rollers for being provided with band automatic centring device,
Comprise the following steps：
S1, when band is rolled from left to right, the center line a of the detection band 10 of band automatic centring device 5 physical location
Real offset A between the center line b of milling train main body, when the real offset A of band is more than band automatic centring device 5
Control accuracy B when, if the real offset A of band 10 be more than zero, the activation point control cylinder of band automatic centring device 5
4 drive left coiling machine 1 to the position of transmission side adjustment band 10, until the center line a of the band 10 and center line b of milling train main body
Overlap；If the real offset A of band 10 is less than zero, the activation point control cylinder 4 of band automatic centring device 5 drives left volume
Machine 1 is taken to adjust the position of band 10 to fore side, until the center line a of band 10 is overlapped with milling train main body b center line；
S2, when band is rolled from right to left, including following two patterns：
S21, MANUAL CONTROL mode：The physical location and rolling mill main of the center line of the detection band of band automatic centring device 5
Real offset A between the center line of body, and controller is transferred to by DP bundle of lines real offset A, controller will be real
Border offset A is transferred to the real offset that band is shown in man-machine interface, man-machine interface；Operator is obtained by man-machine interface
The real offset A of the band fed back from band automatic centring device 5, the accurate physical location for judging band, operator is manual
Adjust roll gap poor, and the real offset of the band in continuous observation man-machine interface, the change in location of band is judged, until band
Without skew or stably in some numerical value；
S22, automatic control mode：Maximum allowable offset value C is set in man-machine interface, band automatic centring device 5 is examined
The real offset A surveyed between the physical location of center line and the center line of milling train main body of the band of outlet side, and pass through DP
The bundle of lines real offset is transferred to controller, and real offset A is transferred in the man-machine interface, man-machine interface by controller
Show the real offset A of band；When the real offset A of band exceedes maximum allowable offset value, and transmission side and fore side
Roll-force difference be less than 50kN, when mill speed is less than 400MPM, when controller calculates corresponding adjustment according to current mill speed
Between and export the poor regulated quantity of roll gap, so as to control the rolling position of band.
Maximum allowable offset value needs are determined according to practical operation situation, are initially set 5mm；The list of roll gap difference regulated quantity
Secondary output valve Z is initially set 10um.
The calculation formula of adjustment time is：
Y=n × (3.252m/ mill speeds)
Wherein, Y is adjustment time, and the unit of mill speed is m/s, n=0~900%, when controller was by delay in Y seconds
Between after triggering roll gap difference automatically adjust.
The utility model is extended to traditional CPC (band automatic centring device) function, and based on CPC, (band is certainly
Dynamic centralising device) the strip location detecting function of itself, additionally it is sent to and is rolled by I/O modules by the DP bundle of lines deviation signal
In the PLC (controller) of machine, and the deviation of band is shown on HMI (man-machine interface), allows operator intuitively to know very much
The relative position of road band.When turning left rolling from the right side, by PLC program is automatic or operator controls roll gap difference to correct manually
The position of band.
Fig. 4 a and Fig. 4 b are referred to, the principle of the correction using the expanded function to band in the operation of rolling is, due to
Four roll reversing rollers are configured without Automatic Flatness Control system, fore side roll gap GapwWith transmission side roll gap GapdRoll gap is poor
(Gapw-Gapd) can not timely be adjusted by real-time monitoring system.As shown in fig. 4 a, as fore side roll gap GapwIt is more than
Transmission side roll gap Gapd(the horizontal component F of roll-force is more than the frictional force between steel band and roll) steel band occurs when extremely a certain critical
To the laterally offset of fore side, if now without auxiliary equipment, operator is difficult the offset for judging steel band, while also not knowing this
Great roll gap difference is adjusted to reduce the lasting laterally offset of steel band, if therefore operator's adjustment is excessive, can be driven again
Side roller stitches GapdMore than fore side roll gap GapwSituation (see Fig. 4 b), when roll gap difference exceed a certain critical value when, steel band will be to biography
Laterally offset occurs for dynamic side, and the lighter causes winding uneven, broken belt accident may be caused when serious.Therefore in this case,
Due to CPC strip location detecting function, when turning left rolling from the right side, operator can be according to the band shown in real time on HMI
Offset is poor to adjust roll gap, and can know whether adjustment amount is reasonable in time, so as to avoid operational error.Specific control mode
Devise and control and automatically control both of which manually.
Four roll reversing rollers of the present utility model for being provided with band automatic centring device, when rolling direction is from left to right
When, left side coiling machine serves as the effect of uncoiler, and dress is vertically moved to adjust by the CPC steel band offset automatically detected
Put, realize alignment function, band is remained at into position of center line, so only needing to finely tune roll gap difference can keep just
Normal rolling；When rolling direction is turned left from the right side, because right side coiling machine is fixed, it is impossible to adjust the position that band enters milling train
Put, and can not also learn the actual shifts trend of outlet side (now left side is outlet side) band.By increasing expanded function
Afterwards, if when rolling from right to left, if the band of outlet side shifts, CPC can detect real offset, if real
When border departure is more than the maximum allowable offset value of setting, PLC can calculate corresponding adjustment time and defeated according to current mill speed
Go out the poor regulated quantity of roll gap, so as to control the rolling position of band.
Four roll reversing rollers of the present utility model for being provided with band automatic centring device, when rolling from left to right, are utilized
CPC automatic centering function, it is ensured that band is always positioned at the center of milling train main body before milling train is entered, it is to avoid because of band
Position before uncoiling is inaccurate or stock roll winds uneven and causes band to deviate milling train center in rolling, reduces sideslip
Risk；When turning left rolling from the right side, by PLC program is automatic or operator controls roll gap difference and corrects the position of band manually
Put, it is to avoid operational error, it is ensured that band is located at the center of milling train main body.
In summary, four roll reversing rollers of the present utility model for being provided with band automatic centring device, band is in rolling
During physical location can be directly displayed on HMI, need to see that naked eyes go to differentiate or gone with tape measure measurement before solving
The problem of, while improving the accuracy and referring to property of control, greatly reduce the manipulation strength of operator, reduction operation wind
Danger, improves rolling stability and reduces rolling accident.It can be applied to steel rolling field, the especially reversable mill without Strip Shape Control.
Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to illustrate that this practicality is new
Type, and be not used as limiting of the present utility model, as long as in spirit of the present utility model, to described above
The change of embodiment will all fall in Claims scope of the present utility model.
Claims (3)
1. be provided with four roll reversing rollers of band automatic centring device, it is characterised in that including left coiling machine, milling train main body,
Right coiling machine and electric-control system, wherein：
The left coiling machine, milling train main body and right coiling machine are set gradually from left to right；
The milling train main body includes upper backup roll, top working roll, bottom working roll and the lower backing roll set gradually from top to bottom, institute
The front side for stating milling train main body is fore side, and the rear side of the milling train main body is transmission side；
The electric-control system includes controller and coupled man-machine interface, and the controller connects with the rolling mill main body phase；
Longitudinal moving device is installed, the longitudinal moving device uses position control cylinder, institute on rear side of the left coiling machine
The output shaft that rheme puts control cylinder is connected with the left coiling machine；
The band automatic centring device is arranged on the right side of the left coiling machine, and the band automatic centring device is located at described
Between left coiling machine and milling train main body, the distance at center to the center of the milling train main body of the band automatic centring device is
3252mm；
The band automatic centring device is connected with the position control cylinder；
The band automatic centring device is connected by DP lines with the controller.
2. four roll reversing rollers as claimed in claim 1 for being provided with band automatic centring device, it is characterised in that the band
Material automatic centring device detects the position error signal of band, and the position error signal is passed by I/O modules by DP bundle of lines
It is defeated to arrive the position deviation value that band is shown on the controller, and the man-machine interface.
3. four roll reversing rollers as claimed in claim 1 for being provided with band automatic centring device, it is characterised in that the band
Material automatic centring device is connected with the position control cylinder by the control of PLC signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621441950.9U CN206382332U (en) | 2016-12-27 | 2016-12-27 | Four roll reversing rollers of band automatic centring device are installed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621441950.9U CN206382332U (en) | 2016-12-27 | 2016-12-27 | Four roll reversing rollers of band automatic centring device are installed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206382332U true CN206382332U (en) | 2017-08-08 |
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ID=59489744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621441950.9U Active CN206382332U (en) | 2016-12-27 | 2016-12-27 | Four roll reversing rollers of band automatic centring device are installed |
Country Status (1)
| Country | Link |
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| CN (1) | CN206382332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513443A (en) * | 2016-12-27 | 2017-03-22 | 奎克化学（中国）有限公司 | Four-roller reversible mill provided with strip automatic centering device and rectifying method thereof |
-
2016
- 2016-12-27 CN CN201621441950.9U patent/CN206382332U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513443A (en) * | 2016-12-27 | 2017-03-22 | 奎克化学（中国）有限公司 | Four-roller reversible mill provided with strip automatic centering device and rectifying method thereof |
| CN106513443B (en) * | 2016-12-27 | 2018-12-11 | 奎克化学（中国）有限公司 | A kind of four roll reversing rollers and its method for correcting error being equipped with band automatic centring device |
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