Background technology
In the production line of sheet metal strip, one of them most important requirement is intended to keep band phase
For the centrage " centering " in machining area.Obviously, centering degree is the highest, then process
Parameter is such as repeatable and degree of accuracy will be the highest, and other aspects are such as worn and torn and safeguard into
This general reduces.In other words, quality and the production cost of final products depends at maximum magnitude
Processed band on the centering degree that is capable of.
For the above reasons, production line manufacturer and associated component manufacturer are always
The system of the track of Focus Control band to a great extent, i.e. research and development are used for correcting strip location
Monitoring and center support system.
The track defect of the band found in a practical situation can be divided into two classes (or this two class
Mixing situation): biasing, i.e. band axis is relative to the centrage sidesway of production line;And by
The deviation that camber causes, long radius of curvature lobe the most in a horizontal plane and vertical with axis
Flexure.
From geometrical point and or rather from the point of view of metallurgical point, defect below is recognized
For being the most dangerous.
Actually in terms of geometrical point, correcting unit is so that band translates to make its position
It is centered in each position of production line, but correction is generally confined to the lateral attitude of band
(near alignment sensor).On the other hand, the bending of motion band cause at production line axis and
Occur between band axis misalignment (even if the situation in staying the plane identical with band
Under), and in these transient processes, between protrusion rate and effective rate, deviation occurs;Cause
This, outside this defect propagation to correcting unit.It practice, form snakelike or sinuous phenomenon, this
Propagate along whole production line.This obviously processing (such as, longitudinally cutting, deposition process or
Rolling rolling) in cause error, this also can significantly affect the quality of final products.
From the point of view of metallurgical point, snakelike at stove interior or the formation in band high-temperature area
Part can cause plasticization, thus affects the end of band, and this can produce and it in turn
The ripple that plane is vertical.Excessive bending can cause material yield with huge correction interference effect,
And sometimes causing defect such as at excessive extension or the crackle of edge, this causes part volume
Material becomes waste product.It practice, it should be noted that and once formed and the most fully correcting
In the case of, camber can make all Downstream processings more dangerous.
It can be seen that most widely used centralising device arrange along strip producing line, and example
As being arranged in the exit of heat part, it is by rotating (i.e. relative to the main shaft of advanced strip
Make in the case of carrying out according to limited mode) the one or more rollers being assemblied in frame
Son is constituted.For the function that they apply, following kind of centralising device can be divided into:
Pure proportional-type: i.e., it is adaptable to by make roller relative to band importation residing for
The parallel axis of plane rotate.Angle beta (seeing Fig. 1 a) is (such as in Paradine patent
US3774831 or US4322060) make the output unit split-phase of band for input unit partite transport
Dynamic (bias correction).This type cannot be used for inputting on band, and maximum correction amount limitation
In the centralising device mechanical trip relevant to roller diameter (if i.e., this system is by two or many
Individual roller is constituted, then be at axle base).It should be noted that for different rotating dog cloth
Put this system major part and keep constant, as long as they are positioned at input band perpendicular and across life
In the plane at Chan Xian center.This layout can set up effectively preventing biasing fault quickly and safely
Only effect.This corrective action is simply carried out on output band, and if axis and centrage
Unanimously, then can by consider the diameter of roller, possible axle base (if this system by
More than one roller is constituted), the sine of winding angle and β deflection angle comes according to fairly simple
Mode calculates its amount.So, the autocontrol method of band therefore can be introduced, but not single
Solely it is confined to export band and the correction of biased error.
Pure integrated (integrated) type: i.e., it is adaptable to produce roller relative to defeated with band
Enter the plane of part vertical and be arranged in the steering angle γ of the supercentral axis of production line and (see
Fig. 1 b);This type causes the pulling force of band the motor side edge of production line and operator
Strong unsymmetry occurs between lateral edges.Thinner at thickness or by the relatively low material of resistance
In the case of the band (strip material portion particularly with from heat treatment section) made, this meeting
Cause material yield, and result may cause damaging or mass property variation.?
Fig. 6 of patent JP7001022 (Nishino Ken) of Somitomo company limited shows
Going out the typical case of pure integrated-type centralising device group, this figure demonstrates that roller is for being positioned at upstream belt
The corrective action of the camber on material (importation).It should be noted that interference effect does not limits
In input strip material portion, and exporting band due to " turning to " orientation of output strip material portion
Produce lasting biasing in part, or in some cases, the edge of band produces different
Normal stretching.This biasing must be corrected by the ratio system being positioned on this band portion, from
And add other parts to this production line, i.e. it is complicated by.Should also be noted that
The corrective action of " turning to " of being applied by integrated centring roll is not instant, and is making control
The effort of system automation has been subjected to the challenge of the oscillation action of strip location.Sometimes, these
Effect instability, and it is thus desirable to need to reduce in the return of centering actuator, therefore shadow
Ring its effect.
Ratio-integrated-type: these are the combinations of above two type, and be most widely used,
Because they can be corrected on two strip material portion (input and export).
Can be seen that from illustrate above for " pure " correction system, it is clear that have with shown
Layouts of these pins of the direction different axis of orientation produce the effect of mixing, i.e. can divide
Become pure ratio adjustment (shown in effective angle β) and integrated correction (shown in γ)
Overall behavior.
These considerations of mechanically-based equipment and the cost of control system or complexity decrease possibility
The selection of suitable structures.It practice, the selection of the longest employing is by filling on fixed frame and its
The movable frame having roller (1 or 2 or more roller) realizes.Movable frame
Produce the rotation rail round the axis relative to the flat inclination α inputting strip material portion
Mark, thus there is the rotating vector component (see Fig. 1 c) parallel with the plane of input strip material portion
And the component vertical with its plane.The combination of both effects (ratio and integrated) is the most usual
By making rack inclining angle [alpha] (as illustrated in figure 1 c) realize in fixed model.
Change generally continuously it should be noted that the most presently used all systems are not expected
Angle [alpha] that is that limit in development and that be prevented from during Assembly line on trial.Cause
This, it is impossible to regulate collection for web type, the stretched condition of participation or material type and characteristic
One-tenth effect.
Therefore the selection of α is by the compromise selection of Design of Production Line person, and is not always suitable for
In inlet materials condition (the most limited α value produces moderate correction probability in upstream,
High alpha-value produces excessive stretching/deformation in the material, and be likely to result in edge stretching or
Material ruptures self).
This structure is given in patent Posco KR20010042781 (Ju Gap Sik)
Example, it is mentioned that relative to input band direction of advance tilt.
Summary of the invention
The overall purpose of the present invention is to solve according to the simplest, economic and practical mode
The defect being previously mentioned the most in the prior art.
Another purpose is to provide the centering of a kind of all advantages being combined with three kinds of known types
Method, in order to these defects are reduced to minimum.
Another purpose is to provide a kind of method, and the method is being deposited by carrying out optimal centering
Control in all types of strip producing lines in the case of various defects and regulate the curved of band
Degree.
In view of purpose above, according to the present invention it is proposed that one in production line to sheet metal strip
Camber be controlled, to neutralizing the integrated approach of regulation, wherein band is logical in centring roll group
Crossing, this centring roll group includes movable frame, and this movable frame carries one or more roller also
And there is rotational angle β relative to fixing frames, so that output strip material portion phase
For input strip material portion offset, the rotation of wherein said movable frame round relative to
The axis (B) of the planar tilt that band importation is positioned at and carry out, this by described can
Motivation frame makes roller axis relative to the Plane Rotation inclination alpha with input band sections transverse
Turning over steering angle γ relative to the vertical line vertical with production line axis, wherein sensor is arranged on edge
On the band of production-line arrangement and be connected with electronic control panel, before this electronic control panel receives
The data of the band entered, described data are position and camber, and based on control algolithm by having
The controller of following form uses:
Correction for the proportional parts of described rotational angle β:
Up=Kp*Ep
Wherein Up be for this correction treat to act on the amount of interference on described rotational angle β,
Ep represents the site error of band, and is detected by sensor, and Kp is dimensional parameters,
Its gain representing the described rotational angle β to deviation reading and change;
Correction for the integration section of described inclination alpha:
Ui=Ki*Ei
Wherein Ui is to treat to act on the amount of interference in described inclination alpha, Ei table for correct
Showing the camber error of band and detected by sensor, and Ki is dimensional parameters, it represents
Gain and change to the described inclination alpha of curvature parameters;
Wherein for given site error Ep=e, Up produces on described rotational angle β,
Overall cumulative correction equal to prediction, it may be assumed that
Up=e*Kp
Wherein there is must use it to calculate by the integrated correction shown in described steering angle γ curved
Spending error E i=e', this is calculated and true by actual described inclination alpha and described rotational angle β
Fixed;" Ziegler-Nichols " method of employing is by whole schools that gain-adjusted is the camber less than 1
Just, 50% correction amount of interference altogether is taked, it may be assumed that
Ui=e'*Ki/2
Wherein said control algolithm calculates correction amount of interference, acts on and described fixing support
On the actuator that frame and movable frame connect, and in the situation of the production line with heat part
Under, on the cooled region of the band acting on the hot portion downstream being positioned at stove.
According to another aspect of the invention, it is proposed that a kind of camber in production line to sheet metal strip
The integrated system being controlled, regulating neutralization, wherein band passes through in centring roll group, should
Centring roll group includes movable frame, and this movable frame carries one or more roller and relatively
In fixing frames, there is rotational angle β, so that output strip material portion is relative to input
Strip material portion offsets, wherein said movable frame rotate round relative to band defeated
Entering the axis (B) of the planar tilt that part is positioned at and carry out, this is by described movable frame
Relative to input band sections transverse Plane Rotation inclination alpha and make roller axis relative to
The vertical line vertical with production line axis turns over steering angle γ, and wherein sensor is disposed along producing
Being connected on the band that line is arranged and with electronic control panel, this electronic control panel receives the band advanced
The data of material, described data are position and camber, and based on control algolithm by having following shape
The controller of formula uses:
Correction for the proportional parts in described rotational angle β:
Up=Kp*Ep
Wherein Up be for this correction treat to act on the amount of interference on described rotational angle β,
Ep represents the site error of band and is detected by sensor, and Kp is dimensional parameters, table
Show gain and the change of the described rotational angle β to deviation reading;
Correction for the integration section of described inclination alpha:
Ui=Ki*Ei
Wherein Ui be the correction for the described integration section for described inclination alpha treat to act on
Amount of interference in described inclination alpha, Ei represents the camber error of band and is detected by sensor,
And Ki is dimensional parameters, this demonstrate gain and the change of the described inclination alpha to curvature parameters
Change;
For given site error Ep=e, Up produces on described rotational angle β, etc.
Overall cumulative correction in prediction, it may be assumed that
Up=e*Kp
And wherein exist and must be calculated by the integrated correction shown in described steering angle γ by it
Camber error E i=e', this is calculated by actual described inclination alpha and described rotational angle β;
" Ziegler-Nichols " method of employing, by the full correction that gain-adjusted is the camber less than 1, is adopted
Take 50% correction amount of interference altogether, it may be assumed that
Ui=e'*Ki/2
Wherein said control algolithm calculates correction amount of interference, acts on and described fixing support
On the actuator that frame and movable frame connect, and in the situation of the production line with heat part
Under, on the cooled region of the band acting on the hot portion downstream being positioned at stove.
Detailed description of the invention
Band camber in production line is controlled, to neutralizing tune according to what the present invention realized
The integrated approach of joint is the most substantially made up of three parts: with 11 bands schematically shown
The position of material 14 and the measurement assembly of camber;By the 12 centring roll group (examples schematically shown
One or more rollers as being arranged in frame);And the control schematically shown with 13
Unit, is used for obtaining data, driving moving element and record the state of production line.
More specifically, in control system 11, the measurement assembly of strip location is by band 14
Shape and position analyzer constitute, it can limit the geometry state of band 14 in real time, with
Just the corrective action starting and taking necessity of possible defect it is capable of detecting when.
In the embodiment of indefiniteness, shape analyzer is used as to include the monitoring of optical means
System, wherein band 14 shows its position by intercepting the part light sent by light source.It is subject to
The geometrical constraint of production line, light source is positioned at before detector to obtain its curvature.The most favourable
Ground needs at least two optical monitoring system, that schematically show the most in fig. 2 and with 15,
16 and 17 those schematically shown.The sense schematically shown out in fig. 2 can also be used
Answer formula or capacitance type sensor 15.
Such as based on " image procossing " renewal with the most traditional system is also effective.At this
In situation, be substantially by image recognition, as in figure 2 it is shown, use at least one video camera 16,
Or 17 and the algorithm of geological information can be extracted from acquired frame to carry out image recognition.Can
Choosing, can use equipped with removable or the equipment of fixed laser.Shape is examined
The location of examining system is not necessarily with restriction.Due to the feedback time that reduces for camber defect relatively
Long, the regioselective of the acquisition system of ribbon shape is (before the 17 of roller control system 18
Or after 16, or in two positions) limited shadow is only had for the algorithm controlling to be used
Ring.
According to relevant to this first group 11 it is contemplated by the invention that go out one group of centring roll 12, it is determined that
The position of band 14 and the Mechanical course of curvature.To this end, in embodiments, roller 19
It is designed to fit within fixed frame 20 and 21 two kinds of frames of movable frame.These frames it
Between, reference the frame 20 fixing relative to production line with carry the roller 19 that determines control
Between movable frame 21, be provided with active and passive component, such as hydraulic pressure or electromagnetic piston 22,
23, ball bearing (not shown) etc..These parts can by simultaneously, automatically and continuously
Ground changes conventional angle α and β and ensures to turn to the motion of frame, and this determines as described above
Integrated and proportional action.
The control system that the hot rolling line that is then departed from by heating furnace 24 to band 14 is relevant
Integration section by one group cooling fluid flow control valve 25 constitute, it can be for its width
(between operator's lateral edges and motor side edge) regulates band 14 according to differentiation mode
Rate of cooling.Integrated Mechanical course (by introducing Non-constant stress on width) therefore leads to
Cross simply an edge of band 14 is carried out selective and prudent " stretching " thus
Differentiation operation is carried out on the band 14 in the exit being positioned at cooling segment 26.It practice, meter
Calculation introduces selective deformation, in order to the metallurgy allowed to or geometrical defect (partly)
With tensile residual (that be pre-existing in and/or caused by current production cycle) recovery, it is thus possible to
Enough quality conditions substantially changing final products.
In the system of the present invention, design the EOC 13 as this system core,
Perform following function: in 31, obtain the conceptual data of handled band 14 and 32
Middle reception deviation data and the curvature data that acquisition obtains from system 11 at 33;Calculate
Correct amount of interference and control the control (expression for the interference in β-ratio of roller group 12
It is 34, and is expressed as 35 for the modification in α-hybrid integrated/ratio);And
In 36, the information relevant to band to be dealt with is sent to the automated system of production line 37.
Specifically, this algorithm (passes through monitoring system based on to the assessment of amount of bias 32 and curvature 33
11 observe) limit the ratio angle beta and integrated angle α being applied on master cylinder 19
Real-time change.The algorithm used by controller has with Types Below:
Correction for the proportional parts in β:
Up=Kp*Ep
Wherein Up is that Ep represents the position of band for this corrective action amount of interference on β
Error (is detected by sensor), and Kp is dimensional parameters, represents the β to deviation reading
Gain and change.
Similarly, for the integration section in α:
Ui=Ki*Ei
Wherein Ui is that Ei represents the curved of band for described corrective action amount of interference on α
Spend error (being detected by sensor), and Ki is dimensional parameters, indicate and curvature is joined
The gain of the α of number and change.
It practice, for given site error Ep=e, Up produces on β, equal to pre-
The overall cumulative correction surveyed, it may be assumed that
Up=e*Kp
Accordingly, there exist must for calculating camber error E i=e' of integrated correction (steering angle γ),
This is calculated by actual inclination alpha and β;Such as " Ziegler-Nichols " side must be used
Gain-adjusted is less than 1 (full correction camber) by method, takes 50% correction amount of interference altogether,
That is:
Ui=e'*Ki/2
Once have been carried out integrated correction (by correction angle [alpha]), then actuator waits basis
" flight time " that the region distance with maximum temperature in heating furnace and ratiometer calculate, it
It is by comparing the reading obtained with desired numerical value (the 50% of initial value) afterwards
Reanalyse camber.
At this moment, modulator function is (current β, α and camber error, residual according to new parameter
Residual value Ei) and determine being recycled for again of new numerical value of Ui (amount of interference on α)
Circulation.
In hot rolling line, can use and optionally change with 38 another group signals represented
Become be usually in those regions of band 14 three regions (outside operator side, center side and
External electrical pusher side) the middle deflection cooling down fluid.This action is preferably by changing at cooling segment
The winding-up flow of the cooling fluid being blown at 39 on three regions of 26 realizes.
As it has been described above, this algorithm must take into sensor and centralising device relative at heating furnace 24
(in the case of centralising device is positioned at furnace outlet) has maximum temperature region or
Input the length of free strip material portion (in the normal conditions that centralising device operates in territory, cold-zone
In), but the most significant aspect of this calculating is the progressively property interfered: on part centring roll
While effect and full correction also can in addition to instability on its track and dispersion response
Strip edge applies excessive stress.It should be noted that from the perspective of energy, integrated
Action increases, by making the potential energy of system, the change becoming to be applied with the elastic modelling quantity of material
Square amount being directly proportional of shape amount acts on, and therefore it is for the difference in terms of track
Change (between edge) is very sensitive.From the perspective of dynamically, band is fricton-tightly at roller
On son by and arrive new least energy situation, wherein in the case of steering angle γ is identical,
The stress that produces in strip edge due to " pulling force " difference of being derived between two edges
Deflection ε and stretching σ with input strip material portion free-span distance length be inversely proportional to.
This system is not instantaneous for the response time that " integrated " corrects, but mobile (right
For steering angle) continue to increase (therefore term " integrated ") until angle " γ " reversely changes.
Obvious this interference (for furnace outlet centralising device) is unstable,
Return similar being still between the level in relative position relative to production line center of energy level
Bullet.
It practice, the strategy be here given is that setting up ratio is completely eliminated the defeated of hot rolling line
Enter the camber of band or lower integrated needed for the input strip location of cold strip material portion
γ corrects, so that system can owing to so-called " ratio " acts on (β rotation) ideally
Correction outgoing position.Can pass through is also to act on a series of continuous accumulation on the cooling system
Interference effect obtains the full correction of camber.So, whole correction time can with deposited
Or being adapted by the time, so that it is corrected into of camber that caused by hot-working circulation
For possible.In order to avoid sinking dangerous for product or deformation occur, except dynamically joining
Outside number, consider also to calculate the amount of interference every time according to metallurgy.
Optional control method the most initially includes pre-established correction parameter, these parameters
Derive from geometry and the component characteristic of band.Then by relatively actual and desired behavior
These parameters are optimized during the course of processing.Such method may be used for isolated operation
Control roller (that is, in rolling mill production line) and may be also used in more complicated system such as its
In in addition to roller, there is also (regulation cooling fluid in those systems of different chillers
Flow).In view of the feedback signal in these hot-working systems, this algorithm is based on such
The fact, i.e. different flow or strict cooling condition according to cooling fluid are (different cold have employed
But system is such as atomized or in the case of atomizing gas), cooling gradient is the biggest, then involved fibre
Dimension thermal contraction is the highest.Result is, when improving cooling effect, realizes tension force in heating furnace 24
Increase, and therefore fiber stretching.Can calculate with analysis meter or with relative to final element
Model calculates the dependency between cooling gradient and fiber stretching.By for final element
Or the computation model of final accurate difference simulates the most complicated air-circulation features, in order to
By could be adjusted to consider the concrete property of production line in the test running stage.
For the important of control centre 13 but not novel function is the calculating with steel mill
Machine and information system interconnection, in order in 31 of the roller under being in processing and transmission, obtain physics
And chemical parameters, obtaining the explanation parameter of the processing carried out in 36, this may be equipped with to shape
The analytical calculation of shape defect.Can also implement and heat-treatment furnace 24 and quenching part (not shown)
Carry out the function of immediate data exchange.
Specifically, it should be noted that in rolling mill production line part (this does not include hot part)
In, center support system adds integrated effect (being determined by device 22 and 23) equipped with proportional action,
The latter can (it be right to be generally arranged at according to the master reference 15 from the position for band 14
The downstream of central roll 12), from the position sensor of frame (employed in common centralising device
Linear transducer) and may time from being arranged to by specific electronic equipment 40
Or production line automation equipment 41 calculates other position sensors anti-of camber of band 14
Feedback signal is adjusted.Therefore according to characteristic (thickness of material, width and the surrender of band 31
Point) and measured camber and regulate integrated effect.
In the production line part including hot part 24,26, correction system is usually located at heat
The exit of the cooling segment 26 of reason stove 24.Roller pair system 12 have proportional action (
In 22) plus integrated effect (in 23), the latter can be according to from for band 14
Position sensor (being generally arranged at the downstream of centring roll group), from frame position sensor with
And calculated by specific electronic equipment set 40 or production line automation equipment 41 from being arranged to
Go out other position sensors of the camber of band 14 and/or plane and camber measurement apparatus (such as
16 and/or 17) feedback signal 32 is adjusted.
Characteristic according to band be (material at a temperature of the operation of heating furnace provided in 31
Thickness, width and yield point) and measured camber (in 40) regulate integrated effect,
So that except after centering campaign and then outlet strip material portion in operation proportional action it
The shape of input strip material portion is corrected by outer acquisition.Suitable means are used (such as to pass through
Avoiding being deformed around roller, this can make uniform load), can be in heating furnace 24
Portion extends by turning to the differential stresses effect caused.As such, it is possible to by directly at heating furnace 24
Internal calibrations defect utilizes the plastic properties of high-temperature metal.From just described it can be seen that
This effect can be improved further by cooling unit 26 is suitably controlled.By can
Different intensity of cooling curve (relative to band in the vertical and in the horizontal) is used to grasp
Make, therefore can be further such that heating the stress state homogenization discussed in 24, in order at least
Partially remove camber defect (no matter it is pre-existing in or is produced by identical heat treatment
Go out).
Referring to Fig. 2 above, the action principle of the embodiment above is provided example.
In this function, initial conditions is:
Centralising device equipped be provided with on fixed frame 20 and its roller 19 (1,2 or
More plurality of roller) movable frame 21, movable frame 21 produces movement locus and (adopts in this motion
In the case of obtaining with other mechanisms, the axis B round Fig. 1 a rotates or round figure
The instantaneou axis of rotation line A of 1c rotates);
Its rotation axis of centralising device (A of Fig. 1 c) is relative to input strip material portion position thereon
Plane there is inclination angle (α) (hang down relative to the importation of band thereon with movable frame
The angle of plane that straight plane carries out rotating is consistent);
Band 14 has the skew of X cm also relative to the centrage on position sensor 15
And be there is the camber (being observed by sensor 17) that radius of curvature is Y m, so that it is determined that
Minor face and long limit.
The Part I of centralising device acts on (centralising device integrated with typical proportions the most as follows
Behavior is corresponding):
According to by measuring the measurement that system 11 (15,16 and/or 17) is carried out, control unit 13
Calculate the first ratio adjustment and will be indicated as this side-play amount of angle beta and send actuator to
22;
The amount of spin β (round the rotation axis B of Fig. 1 a) of frame 21 produces ratio school
Just (employing is calculated as the side-play amount of X+ ε cm, and wherein ε is defeated for consider due to band
Go out the other correction of the camber defect Y m of part), this makes band right relative to sensor 15
In.The position that amount of spin β is always intended to according to the band leaving centralising device (sensor 15) is anti-
Feedback signal continuously adjusts, in order to be retained in position in the margin of tolerance position of output band
(such as ex. ± 5mm);
Band 14 trends towards, in the exit of centralising device 12, self is repositioned at sensor
In center (center of production line) on 15;
Due to the inclination alpha (suitably calculating according to the geometric data of factory) of centralising device 12,
Integrated effect (be equal to roller and turn over angle γ round the axis G of Fig. 1 b) is at band 14
Importation on start simultaneously at proportional action, therefore improve two at band 14 self
" drag " on one in edge.
According to the present invention, the second effect of centralising device is also carried out as follows:
Owing to camber measures sensor, (non-limiting examples can be that continuous print has Class1 5
One or more video cameras 16 and/or 17 or 2 or more sensor), by use
The geometry situation of band measures the result carrying out acting on;
According to new situation, by for computer rack inclination angle by the 42 optimization angle [alpha] represented
Control algolithm, regulate the collection of centralising device 12 by utilizing actuator 23 to change angle [alpha]
One-tenth effect, in order to the position of correction input strip material portion.In calculating amount of interference, except lacking
Falling into outside amount, the algorithm in 42 it is also contemplated that the thickness of band and width and the surrender of material
Point;
Accurately calculate the integrated interference carried out so that with the full recovery institute less than shape defect
The lower amount needed operates on importation.In this stage, system 13 reanalyses (logical
Cross sensor 11) the geometry state (position and camber) of band 14, and by practical function with
Compared by the effect of model prediction.In the case of there are differences, if the camber of band
With position in the margin of tolerance allowed, then keep the regulation (angle [alpha]) realized, be otherwise
System 13 change calculates parameter to fall within the desired margin of tolerance.
3rd effect of centralising device is also carried out as follows according to the present invention:
Owing to camber measures sensor, (non-limiting examples can be that continuous print has Class1 5
One or more video cameras 16 and/or 17 or 2 or more sensor), by update
The geometry situation of band measures carried out exercising result;
If centralising device is positioned at heat part (24 and 26) downstream, then with 43 algorithms represented
Calculate for transmission due to the hot material (and therefore plastics) in being positioned at heating furnace 24
The optimum of the Differential loading (between edge) carrying out the integration section interfered and produce.
To this end, the flow that algorithm 43 is regulated through nozzle 25 by signal 38 is made in cooler 26
With, it is therefore intended that eliminate the cause having produced camber defect.
After being applied with change, system uses new calculating parameter to carry out another correction circulation.
It practice, this circulation starts from the first listed here effect and is performed repeatedly until institute
The band of processing terminates.
Present invention accordingly comprises the integrated form for centering and/or control/regulation band camber is newly
System, this can optimize and be applicable to actually all strips production line, at usual production routine
The middle all defect that can encounter and all strips type processed in steel mill.
The present invention includes proportional action (the outlet strip material portion phase with camber on-line measurement system
For entrance strip material portion offset) and integrated effect (roller relative to input band advance side
Effect of going forward one by one to carrying out turning to period) centralising device (there is one or more roller) and
Can be according to the angle of bend detected by camber measuring device and according to the physical characteristic of material
The Electronic Control system of the integrated actuating quantity of (from production line automation system) regulation center support system
System.
By hydraulic pressure or the electro-mechanical actuator of the inclination alpha of roller rotation axis can be changed
Carry out the regulation of integrated effect, so as to adjusted by the actual state according to band and produce
Line changes the ratio between integrated effect and proportional action.
It is a feature of the present invention that it allows in order to elasticity represents that it is specifically applied
By can real-time continuous accurately calculate its interfere computational algorithm control angle beta and angle simultaneously
Degree α (and therefore also having γ).
Equipped with in the production line of heat-treatment furnace, another feature of the invention includes using meter
Calculate algorithm to driving roller simultaneously and synchronously to control (by utilizing " the towing caused by γ
Power " unsymmetry) and cooling step at stove exit (variable flowed by cooling,
This controls cooling so that set up plastic deformation time can faster or slower).Pass through
Using this combined system, therefore, it is possible to band is carried out controlled-deformation, this can be used to alleviate curved
Degree, thus avoid and form the metallurgy defect that caused by the excessive deformation at edge and (improve band
The quality condition of material).
For the reduction of camber amount, result shows especially when centralising device is positioned at hot portion downstream
Existing defects improves.Some improvement is due to the fact that, by carrying out when closing stove
Attempting, its frequency of the dispersibility in the part of line downstream increases.By on value of calculation
Use α angle, it is achieved excessive correction, and therefore behavior is unstable (in motor side correction
And vibrate between the correction of operator side).Due to the operation restrictive condition that these are strict, result is outstanding
It is effective.
It is achieved that the purpose being previously mentioned in description previous section.
For the version of embodiment of the present invention also have material and assembly model naturally also with
For pure those differences illustrating and demonstrating with non-limiting purpose in accompanying drawing.
Therefore protection scope of the present invention is defined by included claim.