CN108114992B - A kind of anti-tear control device, planisher and control method - Google Patents
A kind of anti-tear control device, planisher and control method Download PDFInfo
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- CN108114992B CN108114992B CN201810044753.0A CN201810044753A CN108114992B CN 108114992 B CN108114992 B CN 108114992B CN 201810044753 A CN201810044753 A CN 201810044753A CN 108114992 B CN108114992 B CN 108114992B
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- 238000006073 displacement reaction Methods 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 description 11
- 238000005096 rolling process Methods 0.000 description 8
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/48—Tension control; Compression control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
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- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
The embodiment of the invention provides a kind of anti-tear control device, planisher and control method, anti-tear control device includes: telescopic oil cylinder, auxiliary pressure arm, rotary shaft, pressure arm, pressure roller and control device；Telescopic oil cylinder is also electrically connected with control device, and telescopic oil cylinder is provided with telescopic arm and rotating support shaft；Telescopic arm is connected with one end of auxiliary pressure arm；The other end and one end of pressure arm for assisting pressure arm are connected with rotary shaft, are preset with the first angle between auxiliary pressure arm and pressure arm, rotating shaft center respectively with the second angle is preset between the line at coiled sheet center and rotating support shaft center；The other end of pressure arm is connected with pressure roller；Control device is according to the distance between outer surface of the coil diameter of coiled sheet, the outer surface of pressure roller and coiled sheet, device parameter and measurement parameter, obtain control parameter, and then according to obtained control parameter, control signal is sent to telescopic oil cylinder, the depressing position for controlling pressure roller can solve the problems, such as to tear in cold rolled strip steel production process tabularium.
Description
Technical field
The present invention relates to field of machining, in particular to a kind of anti-tear control device, planisher and control method.
Background technique
During cold rolled strip steel production, when the coil of strip in bell furnace is begun to cool, coil of strip outer layer is quickly cooled down, receives
Contracting, and internal layer temperature has been more than 600 DEG C, thus very high radial pressure is just produced in coil of strip, in the height for being up to a few hours
Warm high pressure acts on lower coil of strip interlayer and generates bonding.Due to the effect of bonding force, uncoiling breaking up point is made to deviate point of contact, and with coil diameter
Become smaller, the angle of spread increases with it, cause the instantaneous normal direction tear force of steel band be much larger than adhesive spots strip strength degree, thus often
The tearing or jackknifing when uncoiling occurs, while causing the fluctuation of tension, seriously affects the smooth quality of steel band, smooth to high speed is thin
With particularly evident.
Summary of the invention
The embodiment of the invention provides a kind of anti-tear control device, planisher and control methods, to solve in cold-rolled strip
The problem of tearing of steel production process tabularium or jackknifing.
In order to solve the above-mentioned technical problem, one aspect according to an embodiment of the present invention provides a kind of anti-tear control
Device, comprising: telescopic oil cylinder, auxiliary pressure arm, rotary shaft, pressure arm, pressure roller and control device；
The telescopic oil cylinder is electrically connected with the control device, and the telescopic oil cylinder is provided with telescopic arm and rotation support
Axis；
The telescopic arm is connected with one end of the auxiliary pressure arm；
The other end of the auxiliary pressure arm and one end of the pressure arm are connected with the rotary shaft, the auxiliary pressure arm and
Be preset with the first angle between the pressure arm, the center of the rotary shaft respectively with the center of coiled sheet to be rolled and the rotation
The second angle is preset between the line at the center of support shaft；
The other end of the pressure arm is connected with the pressure roller；
The control device is for obtaining between the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and the outer surface of coiled sheet
Distance, device parameter and measurement parameter；Wherein, described device parameter include: the length of pressure arm, the radius of pressure roller or diameter,
The distance between rotating shaft center and rotating support shaft center, the length for assisting pressure arm, the first angle, the second angle, auxiliary pressure
Arm and rotating shaft center between the rotating support shaft line of centres third angle and/or rotating shaft center and coiled sheet center between
Line and pressure arm between the 4th angle；The measurement parameter includes: the actual value of the collapsing length of telescopic oil cylinder, strip thickness
The pressure of degree or telescopic oil cylinder；
The control device be also used to according to the outer surface of the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet it
Between distance, device parameter and measurement parameter, obtain control parameter；
The control device is also used to according to obtained control parameter, sends control signal to telescopic oil cylinder, and then control
The depressing position of the pressure roller.
Optionally, the control device includes: the displacement for the actual value for measuring the collapsing length of the telescopic oil cylinder
The measuring device and processor of sensor, coil diameter for measuring coiled sheet to be rolled；
Institute's displacement sensors and measuring device are electrically connected with the processor, and institute's displacement sensors are arranged described
On telescopic oil cylinder；
The processor is for obtaining between the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and the outer surface of coiled sheet
The actual value of the collapsing length of distance, device parameter and telescopic oil cylinder；
The processor is also used to according between the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and the outer surface of coiled sheet
Distance, device parameter be calculated telescopic oil cylinder collapsing length theoretical value；
The processor is also used to the collapsing length of the theoretical value and telescopic oil cylinder according to the collapsing length of telescopic oil cylinder
Difference obtains the first control parameter between actual value, sends the first control to the telescopic oil cylinder according to the first control parameter and believes
Number, the depressing position of the pressure roller is controlled by first control signal.
Optionally, the processor is also used to according to the outer of the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet
The theoretical value of the collapsing length of telescopic oil cylinder is calculated, wherein to be rolled in the relational expression on the distance between surface and device parameter
The relational expression of the distance between outer surface of the coil diameter of the coiled sheet of system, the outer surface of pressure roller and coiled sheet and device parameter is as follows
Wherein, H indicates the theoretical value of the collapsing length of telescopic oil cylinder；A indicates rotating shaft center and rotating support shaft center
The distance between；B indicates the length of auxiliary pressure arm；The radius of R expression coiled sheet；The length of L expression pressure arm；R indicates the half of pressure roller
Diameter；A indicates the distance between outer surface and outer surface of coiled sheet of pressure roller；δ indicates the first angle；γ indicates the second angle.
Other side according to an embodiment of the present invention additionally provides a kind of control method of anti-tear control device, packet
It includes:
Obtain the distance between outer surface of the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet, device parameter
And measurement parameter；Wherein, described device parameter includes: the length of pressure arm, the radius of pressure roller or diameter, rotating shaft center and rotation
The distance between support axis center, the length of auxiliary pressure arm, the first angle, the second angle, auxiliary pressure arm and rotating shaft center arrive
Between the line and pressure arm between third angle and/or rotating shaft center and coiled sheet center between the rotating support shaft line of centres
The 4th angle；The measurement parameter includes: the pressure of the actual value of the collapsing length of telescopic oil cylinder, strip thickness or telescopic oil cylinder
Power；
The distance between outer surface according to the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet, device parameter
And measurement parameter, obtain control parameter；
According to obtained control parameter, control signal is sent to telescopic oil cylinder, and then control the depressing position of the pressure roller；
Wherein, preset angle between pressing aid arm and the pressure arm supplemented by first angle, second angle is rotation
The center of shaft respectively with angle preset between the line at the center of coiled sheet to be rolled and the center of the rotating support shaft.
Optionally, it is described according between the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and the outer surface of coiled sheet away from
From, device parameter and measurement parameter, control parameter is obtained, comprising:
The distance between outer surface according to the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet and device ginseng
Number, is calculated the theoretical value of the collapsing length of telescopic oil cylinder；
Using the difference of the theoretical value of the collapsing length of telescopic oil cylinder and the actual value of collapsing length as the first control parameter.
Optionally, it is described according between the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and the outer surface of coiled sheet away from
From and device parameter, the theoretical value of the collapsing length of telescopic oil cylinder is calculated, comprising:
The distance between outer surface according to the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet and device parameter
Relational expression, the theoretical value of the collapsing length of telescopic oil cylinder is calculated, wherein the coil diameter of coiled sheet to be rolled, pressure roller it is outer
The relational expression of the distance between surface and the outer surface of coiled sheet and device parameter is as follows
Wherein, H indicates the theoretical value of the collapsing length of telescopic oil cylinder；A indicates rotating shaft center and rotating support shaft center
The distance between；B indicates the length of auxiliary pressure arm；The radius of R expression coiled sheet；The length of L expression pressure arm；R indicates the half of pressure roller
Diameter；A indicates the outer surface of pressure roller and the outer surface distance of coiled sheet；δ indicates the first angle；γ indicates the second angle.
Other side according to an embodiment of the present invention additionally provides a kind of planisher, including as described above anti-tear
Control device.
The embodiment of the present invention has the following beneficial effects:
Pass through control device and the telescopic oil cylinder, auxiliary pressure arm, rotary shaft, pressure arm and pressure roller (or being anti-tear roller)
Between mating connection, can solve the problems, such as cold rolled strip steel production process tabularium tear or jackknifing.The anti-tear control dress
It is set effective to reduce strip normal direction tear force and tear speed and the servo-actuated pressure of pressure roller is realized using position-force control, and have
There is anti-tensile force-disturbance function, control precision is high.The anti-tear control device improves the lumber recovery of deep-drawing board, makes cold-reduced sheet matter
Amount is improved, to bring biggish economic benefit and social benefit.
Detailed description of the invention
Fig. 1 is a kind of mechanism principle figure for planisher that the prior art provides；
Strip uncoiling schematic diagram when a kind of full rolling that Fig. 2 provides for the prior art in the operation of rolling；
Strip uncoiling schematic diagram when a kind of tail rolling that Fig. 3 provides for the prior art in the operation of rolling；
Fig. 4 is a kind of one of structural schematic diagram of anti-tear control device provided in an embodiment of the present invention；
Fig. 5 is a kind of second structural representation of anti-tear control device provided in an embodiment of the present invention；
Fig. 6 is that the relation curve that a kind of coil of strip diameter provided in an embodiment of the present invention follows coil diameter to change with anti-tear roller shows
It is intended to；
Fig. 7 is a kind of structural schematic diagram of the custom feature block of control device provided in an embodiment of the present invention；
Fig. 8 is a kind of flow diagram of the control method of anti-tear control device provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of the control method of the anti-tear control device of another kind provided in an embodiment of the present invention.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
Term " first ", " second " in description and claims of this specification etc. are for distinguishing similar right
As without being used to describe a particular order or precedence order.It should be understood that the data used in this way in the appropriate case can be with
It exchanges, so that the embodiment of the present invention described herein for example can be with suitable other than those of illustrating or describing herein
Sequence is implemented.
Fig. 1 is the mechanism principle figure of planisher, and planisher includes: uncoiler 1, S roller 2 and roll 3.When coiled sheet (or is
Coil of strip) when opening under the action of 1 tension T of uncoiler shown in Fig. 1, it is assumed that strip is full flexible and there is no bonding,
It is opened at strip Ying Yu coil of strip tangent Fig. 2 and a shown in Fig. 3.But due to there is bonding between strip, strip and coil of strip
Actually opened point is at Fig. 2 and b shown in Fig. 3.Because strip has certain rigidity, therefore Chu Youyiduan recurvation area is opened close.
The angle that b point tangent line is crossed in the direction of tension T and coil of strip surface is defined as angle of spread θ.Angle of spread θ and adhesion strength and tension T
Size is related: bonding is stronger, and the angle θ is bigger；Tension T is bigger, and the angle θ is smaller.
Obviously, in uncoiling process, strip drawn, curved synergy, in more complicated stress, strip
Stress intensity and uncoiling tension T, strip thickness t, bonding degree σ F, coiled sheet radius R etc. are related.When surface stress is more than surrender pole
In limited time, so that it may can occur causing the plastic deformation of surface cross breaks.It, can be on 1 head of uncoiler in order to prevent strip tearing
Anti-tear control device is added, and the control method of self learning model is used to realize the anti-tear control to steel band (or for strip)
System.
Based on principles above, the embodiment of the invention provides a kind of anti-tear control devices, referring to fig. 4, described anti-tear
Control device includes: telescopic oil cylinder 4,5, auxiliary pressure arm 6, rotary shaft 7, pressure arm 8, pressure roller (or being anti-tear roller) 9 and control
Device (not shown).Wherein,
The telescopic oil cylinder 4,5 is electrically connected with the control device；The telescopic oil cylinder 4,5 is provided with rotating support shaft 4
With telescopic arm 5, the telescopic arm 5 is connected with one end of the auxiliary pressure arm 6；The other end of the auxiliary pressure arm 6 and the pressure
One end of arm 8 is connected with the rotary shaft 7, is preset with the first angle between the auxiliary pressure arm 6 and the pressure arm 8, described
The center of rotary shaft 7 respectively be preset between the line at the center of coiled sheet to be rolled and the center of the rotating support shaft 4
Second angle；The other end of the pressure arm 8 is connected with the pressure roller 9.
The control device be used for obtain the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller 9 and coiled sheet outer surface it
Between distance, device parameter and measurement parameter.
Wherein, described device parameter includes: the length of pressure arm 8, the radius of pressure roller 9 or diameter, the center of rotary shaft 7 and rotation
Turn the distance between center of support shaft 4, the length for assisting pressure arm 6, the first angle, the second angle, auxiliary pressure arm 6 and rotary shaft
7 centers are to the third angle between 4 line of centres of rotating support shaft and/or the line between 7 center of rotary shaft and coiled sheet center
The 4th angle between pressure arm 8；The measurement parameter includes: the actual value of the collapsing length of telescopic oil cylinder 4,5, strip thickness
Or the pressure of telescopic oil cylinder 4,5.
The control device is also used to the outer surface of the coil diameter according to coiled sheet to be rolled, the outer surface of pressure roller 9 and coiled sheet
The distance between, device parameter and measurement parameter, obtain control parameter.
The control device is also used to according to obtained control parameter, sends control signal to telescopic oil cylinder 4,5, and then control
Make the depressing position of the pressure roller 9.
In embodiments of the present invention, pass through control device and the telescopic oil cylinder 4,5, auxiliary pressure arm 6, rotary shaft 7, pressure arm
8, pressure roller (or be anti-tear roller) 9 is cooperatively connected, and can solve to tear in cold rolled strip steel production process tabularium or jackknifing is asked
Topic.The anti-tear control device effectively reduces strip normal direction tear force and tears speed, using position-force control, realizes pressure
The servo-actuated pressure of roller, and have the function of anti-tensile force-disturbance, control precision is high.The anti-tear control device improves deep-drawing board
Lumber recovery is improved cold-reduced sheet quality, to bring biggish economic benefit and social benefit.
On the basis of the above embodiments, the embodiment of the invention provides a kind of anti-tear control device, the anti-tear controls
Device processed realizes the control of the depressing position to the pressure roller 9 by the collapsing length of control telescopic oil cylinder 4,5.
Specifically, the control device includes: the position for the actual value for measuring the collapsing length of the telescopic oil cylinder 4,5
The measuring device and processor of displacement sensor, coil diameter for measuring coiled sheet to be rolled；Institute's displacement sensors and measurement dress
Set it is equal be electrically connected with the processor, institute's displacement sensors be arranged on the telescopic oil cylinder 4,5.
The processor is used to obtain between coil diameter, the outer surface of pressure roller 9 and the outer surface of coiled sheet of coiled sheet to be rolled
Distance, device parameter and telescopic oil cylinder 4,5 collapsing length actual value；The processor is also used to according to plate to be rolled
Telescopic oil cylinder 4,5 is calculated in the distance between outer surface of the coil diameter of volume, the outer surface of pressure roller 9 and coiled sheet, device parameter
The theoretical value of collapsing length；The processor is also used to the theoretical value and telescopic oil cylinder of the collapsing length according to telescopic oil cylinder 4,5
Difference obtains the first control parameter between the actual value of 4,5 collapsing length, according to the first control parameter to the telescopic oil cylinder
4,5 send first control signal, and the depressing position of the pressure roller 9 is controlled by first control signal.
The processor be also used to the coil diameter according to coiled sheet to be rolled, the outer surface of pressure roller 9 and coiled sheet outer surface it
Between distance and device parameter relational expression, the theoretical value of the collapsing length of telescopic oil cylinder 4,5 is calculated, as flexible brachium
The theoretical value of degree, wherein the distance between outer surface of the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller 9 and coiled sheet and dress
The relational expression for setting parameter is as follows
Wherein, H indicates the theoretical value of the collapsing length of telescopic oil cylinder 4,5；A indicates 7 center of rotary shaft and rotating support shaft 4
The distance between center；B indicates the length of auxiliary pressure arm 6；The radius of R expression coiled sheet；The length of L expression pressure arm 8；R indicates pressure
The radius of roller 9；A indicates the outer surface of pressure roller 9 and the outer surface distance of coiled sheet；δ indicates the first angle；γ indicates the second angle.
It should be noted that the outer surface of pressure roller 9 and the outer surface distance A of coiled sheet are obtained in the actual production process
Empirical value is of course not solely limited to this.
The derivation process of formula (1) is as follows
H2=a2+b2-2ab*cosβ (2)
Wherein, β indicates third angle.
It is obtained by extraction of square root
β=δ-γ-θ (4)
Wherein, θ indicates the 4th angle.
Trigonometric function relationship according to figure 5, the simplified angle θ calculate as follows
It is obtained according to sine
The meter for obtaining the adjustment distance H of the telescopic oil cylinder 4,5 and changing with coil diameter R is arranged according to formula (2)~formula (6)
It calculates formula (1).
If the maximum gauge that coil of strip allows is Φ 2000mm, the maximum width that coil of strip allows is 1300mm, described flexible
The diameter of oil cylinder 4,5 be 125mm, the telescopic arm 5 be 90mm, 4,5 stroke of telescopic oil cylinder be 550mm, 7 center of rotary shaft with stretch
The distance between 4,5 center of contracting oil cylinder a is 1506mm；Assisting the length b of pressure arm 6 is 800mm, and the length L of pressure arm 8 is
1971mm, the radius r of pressure roller 9 are 155mm, and the first angle δ is 153.8 degree；Second angle γ is 36.7 degree.By the above parameter
Numerical value substitutes into formula (1).
It is learnt according to formula (7), coil of strip radius R is the function of oil cylinder telescopic location, in conjunction with production technology to 9 track of pressure roller
And status requirement, so that pressure roller 9 is smoothly adjusted distance A value along track according to the variation of coil diameter in control, protects A value
It holds the progress closed loop in an accuracy rating and follows adjusting.
Fig. 5 is adjusting situation of the distance controlling in 22mm of pressure roller 9 and coil of strip outer diameter in the operation of rolling, can be with referring to Fig. 5
Find out as the coil diameter of coil of strip is constantly reduced, pressure roller 9 is smoothly depressed, and is remained and is floated within the scope of 22mm with belt steel surface distance
Dynamic adjusting follows, and demonstrates the anti-tear control device feasibility and precision.
It should be noted which can preferably control the depressing position of the pressure roller 9 by sensor, but also
The influence that such as tension fluctuation disturbance can effectively be inhibited is played and is generated during stablizing effective prevention belt steel rolling because of bonding
Splitting.Kang Yu series KYDM-LP1A4210 can be selected in displacement sensor, and measurement accuracy is ± 0.3mm, can meet survey
The requirement of accuracy of measurement.
On the basis of the above embodiments, the embodiment of the invention provides another anti-tear control device, this is anti-tear
Control device realizes the control of the depressing position to the pressure roller 9 by the rotation angle of control auxiliary pressure arm 6 or pressure arm 8.
Specifically, the control device includes: described to control for the rotation angle by auxiliary pressure arm 6 or pressure arm 8
The encoder of the depressing position of pressure roller 9；The controller of the telescopic oil cylinder 4,5 is electrically connected with the encoder, the encoder
It is arranged in the rotary shaft 7.
At this point, described device parameter further include: the umber of pulse of encoder.
The encoder is used to obtain the umber of pulse and strip thickness of encoder；The encoder is also used to according to encoder
Umber of pulse and strip THICKNESS CALCULATION obtain auxiliary pressure arm 6 or pressure arm 8 rotation angle, it is described auxiliary pressure arm 6 or pressure arm 8 rotation
Gyration is the second control parameter；The encoder is also used to be sent out according to second control parameter to the telescopic oil cylinder 4,5
Second control signal is sent, the depressing position of the pressure roller 9 is controlled by second control signal.
In embodiments of the present invention, because of the swing that the swing of pressure roller is fan-shaped region face, therefore pressure arm 6 or pressure arm 8 are assisted
It is to be swung within the scope of 0 degree~46 degree, the coil diameter variation of coiled sheet to be rolled is corresponding with pulse change, coiled sheet to be rolled
The corresponding pulse change formula of coil diameter variation are as follows: umber of pulse * strip thickness/360.
Assuming that the high impulse number absolute value encoder selected for 8000 pulses/turn, strip is to be rolled with a thickness of 0.3mm
The corresponding pulse change of the coil diameter variation of coiled sheet are as follows: 8000*0.3/360 ≈ 6.Then uncoiler 1 often rotates a circle, and assists pressure arm
6 or the umber of pulse that is rotated of pressure arm 8 be 6 pulses, but this kind of mode is difficult to control precision.
On the basis of the above embodiments, the embodiment of the invention provides another anti-tear control device, this is anti-tear
Control device realizes the control of the depressing position to the pressure roller 9 by the pressure of control telescopic oil cylinder 4,5.
Specifically, the control device includes: pressure for measuring the telescopic oil cylinder 4,5 and according to described flexible
The pressure of oil cylinder 4,5 controls the pressure sensor of the swing position of the pressure roller 9；The pressure sensor and the flexible oil
Cylinder 4,5 is electrically connected, and the pressure sensor is arranged on the telescopic oil cylinder 4,5.
The pressure sensor is used to measure the pressure of telescopic oil cylinder 4,5, and the pressure sensor is also used to according to measurement
The pressure of the telescopic oil cylinder 4,5 is obtained, Xiang Suoshu telescopic oil cylinder 4,5 sends third and controls signal, controls by pressure closed loop
The swing position of the pressure roller 9.
In embodiments of the present invention, it is self-possessed during being accommodated because of the pressure roller 9 non-linear, during the rolling process, tension is trembled
It is dynamic be possible to will cause the pressure roller 9 depressing force it is unstable the problems such as, therefore be possible to go out using pressure sensor mode
Now it is difficult the situation for making closed-loop control reach stable.
It should be noted that difficult to control and be difficult to steady due to being respectively present precision using encoder and pressure sensor mode
Surely the problem of controlling the depressing position of the pressure roller 9, therefore preferably using the side of displacement sensor in three of the above mode
Formula, which can preferably control the depressing position of pressure roller 9 by sensor, and can also effectively inhibit such as tension fluctuation
The influence of disturbance plays the Splitting stablized and generated during effective prevention belt steel rolling by bonding, and meets dynamometry
Accuracy of measurement requirement.
On the basis of the above embodiments, the embodiment of the present invention also provides a kind of planisher, including prevents tearing as described above
Split control device.Continue to participate in Fig. 1, the planisher further include: roll 3, S roller 2 and uncoiler 1 are of course not solely limited to this
Place column components.
In order to realize that planisher basic automatization controls, Siemens series of PLC (Programmable is can be used in system
Logic Controller, programmable logic controller (PLC)) two parts hardware system is constituted, first part is dedicated for technique control
System selects S7-458CPU to be used as processor, and second part selection S7-400CPU414-2DP is as sequence processor and other
The control of aspect.
Field bus device is done at the station ET-200M distribution I/O that ProfiBus-DP can be used, and 3 industrial computers do man-machine
Interface (HMI, Human Machine Interface), HMI WinCC ((Windows Control Center, form control
Center) programming, WinCC uses intuitive and convenient, is operated by system prompt, can create various functional pictures, for pass schedule
Input, when the state and alarm limit of unit equipment, print, summarize etc..
Basic automation systems have used two kinds of communication networks: 1) ProfiBus-DP fieldbus；2) Industrial Ethernet.
Automatic control system and driving control system just constitute the data communication of a completion in this way.
Referring to Fig. 6, can be worked out according to formula (1) custom feature block ARC (Anti-rip Roll Control, it is anti-tear
Roller control), by coil diameter calculation amount, the 9 telescopic location value RefH of pressure roller that detection obtains and the pressure roller 9 for needing to keep that measurement obtains
It is connected to variable with coil of strip outer ring distance value A, and in actual production to PI (Proportion Intergral, proportional integration
Controller) parameter progress parameter regulation, to reach quick response and accurate positioning.Output OUT is directly sent after clipping controls
It is controlled to oil cylinder opening degree, adjusts oil cylinder according to the dynamic following that coil diameter changes to reach.
By debugging and to the optimizing regulation of PI parameter, the final anti-tear roller effectively reduces strip normal direction tear force
And speed is torn, using position-force control, the anti-tear control device and planisher can realize the servo-actuated pressure of pressure roller 9, and
Has the function of anti-tensile force-disturbance, control precision is high.The anti-tear control device and planisher improve the lumber recovery of deep-drawing board,
It is improved cold-reduced sheet quality, to bring biggish economic benefit and social benefit.
Referring to Fig. 8, the embodiment of the invention provides a kind of control method of anti-tear control device, the anti-tear control
The control method of device includes the following steps: S801~S803.
S801 obtains the distance between outer surface of the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller 9 and coiled sheet, dress
Set parameter and measurement parameter；Wherein, described device parameter includes: the length of pressure arm 8, the radius of pressure roller 9 or diameter, rotary shaft 7
The distance between center and 4 center of rotating support shaft, assist the length of pressure arm 6, the first angle, the second angle, auxiliary pressure arm with
7 center of rotary shaft between 4 line of centres of rotating support shaft third angle and/or rotating shaft center and coiled sheet center between
The 4th angle between line and pressure arm；The measurement parameter includes: actual value, the strip of the collapsing length of telescopic oil cylinder 4,5
The pressure of thickness or telescopic oil cylinder 4,5；
S802, according to the distance between outer surface of the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller 9 and coiled sheet, dress
Parameter and measurement parameter are set, control parameter is obtained；
S803 sends control signal to telescopic oil cylinder 4,5, and then control the pressure roller 9 according to obtained control parameter
Depressing position.
In embodiments of the present invention, by according to the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller 9 and the appearance of coiled sheet
The distance between face, device parameter and measurement parameter obtain control parameter, and then according to obtained control parameter, to flexible oil
Cylinder 4,5 sends control signal, and then controls the depressing position of the pressure roller 9, can solve during cold rolled strip steel production in this way
The problem of strip tearing or jackknifing.The control method of the anti-tear control device effectively reduces strip normal direction tear force and tears
Speed realizes the servo-actuated pressure of pressure roller using position-force control, and has the function of anti-tensile force-disturbance, and control precision is high.It should
The control method of anti-tear control device improves the lumber recovery of deep-drawing board, is improved cold-reduced sheet quality, thus bring compared with
Big economic benefit and social benefit.
In embodiments of the present invention, the control method of anti-tear control device can be realized in several ways to the pressure
The control of roller detects the collapsing length of telescopic oil cylinder 4,5 by displacement sensor according to formula referring to Fig. 9, according to flexible
The relationship of the outer surface distance A of length and coil of strip radius, the outer surface of pressure roller 9 and coiled sheet, makes A by adjusting the collapsing length
Value is maintained at progress closed loop in an accuracy rating and follows adjusting.
On the basis of the above embodiments, the embodiment of the present invention provides the control method of another anti-tear control device,
The S802 includes: S8021~S8022.
S8021, according to the distance between outer surface of the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller 9 and coiled sheet and
The theoretical value of the collapsing length of telescopic oil cylinder 4,5 is calculated in device parameter；
S8022, by the difference of the theoretical value of the collapsing length of telescopic oil cylinder 4,5 and the actual value of collapsing length as first
Control parameter.
The S8021 includes: S80211.
S80211, according to the distance between outer surface of the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller 9 and coiled sheet and
The theoretical value of the collapsing length of telescopic oil cylinder 4,5 is calculated, wherein the volume of coiled sheet to be rolled in the relational expression of device parameter
The relational expression of the distance between outer surface of diameter, the outer surface of pressure roller 9 and coiled sheet and device parameter is formula (1), herein no longer
It repeats.
On the basis of the above embodiments, the embodiment of the present invention provides the control method of another anti-tear control device,
The S802 includes: S8023~S8024.
S8023 obtains the umber of pulse and strip thickness of encoder；
S8024 obtains the rotation angle of auxiliary pressure arm 6 or pressure arm 8 according to the umber of pulse of encoder and strip THICKNESS CALCULATION,
Assisting the rotation angle of pressure arm 6 or pressure arm 8 is the second control parameter.
On the basis of the above embodiments, the embodiment of the present invention provides the control method of another anti-tear control device,
The S802 includes: S8025~S8026.
S8025 measures the pressure of the telescopic oil cylinder 4,5；
S8026 obtains the pressure of the telescopic oil cylinder 4,5 according to measurement, and Xiang Suoshu telescopic oil cylinder 4,5 sends third control
Signal controls the swing position of the pressure roller 9 by pressure closed loop.
In embodiments of the present invention, by debugging and to the optimizing regulation of PI parameter, the control of the anti-tear control device
Method processed effectively reduces strip normal direction tear force and tears speed, using position-force control, realizes the servo-actuated pressure of pressure roller,
And having the function of anti-tensile force-disturbance, control precision is high.The control method of the anti-tear control device improve deep-drawing board at
Material rate is improved cold-reduced sheet quality, to bring biggish economic benefit and social benefit.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of anti-tear control device characterized by comprising telescopic oil cylinder, auxiliary pressure arm, rotary shaft, pressure arm, pressure roller and
Control device；
The telescopic oil cylinder is electrically connected with the control device, and the telescopic oil cylinder is provided with telescopic arm and rotating support shaft；
The telescopic arm is connected with one end of the auxiliary pressure arm；
The other end of the auxiliary pressure arm and one end of the pressure arm are connected with the rotary shaft, the auxiliary pressure arm with it is described
The first angle is preset between pressure arm, the center of the rotary shaft is supported with the center of coiled sheet to be rolled and the rotation respectively
The second angle is preset between the line at the center of axis；
The other end of the pressure arm is connected with the pressure roller；
The control device be used for obtain between the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and the outer surface of coiled sheet away from
From, device parameter and measurement parameter；Wherein, described device parameter includes: the length of pressure arm, the radius of pressure roller or diameter, rotation
The distance between axis center and rotating support shaft center, assist the length of pressure arm, the first angle, the second angle, auxiliary pressure arm with
Rotating shaft center is to the third angle between the rotating support shaft line of centres and/or the company between rotating shaft center and coiled sheet center
The 4th angle between line and pressure arm；The measurement parameter include: the actual value of the collapsing length of telescopic oil cylinder, strip thickness or
The pressure of telescopic oil cylinder；
The control device is also used to according between the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and the outer surface of coiled sheet
Distance, device parameter and measurement parameter, obtain control parameter；
The control device is also used to according to obtained control parameter, sends control signal to telescopic oil cylinder, and then described in control
The depressing position of pressure roller.
2. anti-tear control device according to claim 1, which is characterized in that the control device includes: for measuring
The measurement dress of the displacement sensor of the actual value of the collapsing length of the telescopic oil cylinder, coil diameter for measuring coiled sheet to be rolled
It sets and processor；
Institute's displacement sensors and measuring device are electrically connected with the processor, and the setting of institute's displacement sensors is described flexible
On oil cylinder；
The processor be used for obtain between the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and the outer surface of coiled sheet away from
Actual value from, device parameter and the collapsing length of telescopic oil cylinder；
The processor be also used to according between the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and the outer surface of coiled sheet away from
Theoretical value from the collapsing length that telescopic oil cylinder is calculated in, device parameter；
The processor is also used to the reality of the collapsing length of the theoretical value and telescopic oil cylinder according to the collapsing length of telescopic oil cylinder
Difference obtains the first control parameter between value, sends first control signal to the telescopic oil cylinder according to the first control parameter, leads to
Cross the depressing position that first control signal controls the pressure roller.
3. anti-tear control device according to claim 2, which is characterized in that the processor is also used to according to be rolled
The coil diameter of coiled sheet, the distance between the outer surface of the outer surface of pressure roller and coiled sheet and the relational expression of device parameter, be calculated
The theoretical value of the collapsing length of telescopic oil cylinder, wherein the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet outer surface
The distance between and device parameter relational expression it is as follows
Wherein, H indicates the theoretical value of the collapsing length of telescopic oil cylinder；A is indicated between rotating shaft center and rotating support shaft center
Distance；B indicates the length of auxiliary pressure arm；The radius of R expression coiled sheet；The length of L expression pressure arm；The radius of r expression pressure roller；A
Indicate the distance between outer surface and the outer surface of coiled sheet of pressure roller；δ indicates the first angle；γ indicates the second angle.
4. a kind of control method of anti-tear control device characterized by comprising
Obtain the distance between outer surface of the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet, device parameter and survey
Measure parameter；Wherein, described device parameter includes: that the length of pressure arm, the radius of pressure roller or diameter, rotating shaft center and rotation support
The distance between axis center, the first angle, the second angle, assists pressure arm and rotating shaft center to rotation at the length for assisting pressure arm
Between the line and pressure arm between third angle and/or rotating shaft center and coiled sheet center between the support shaft line of centres
Four angles；The measurement parameter includes: the pressure of the actual value of the collapsing length of telescopic oil cylinder, strip thickness or telescopic oil cylinder；
The distance between outer surface according to the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet, device parameter and survey
Parameter is measured, control parameter is obtained；
According to obtained control parameter, control signal is sent to telescopic oil cylinder, and then control the depressing position of the pressure roller；
Wherein, preset angle between pressing aid arm and the pressure arm supplemented by first angle, second angle is rotary shaft
Center respectively with angle preset between the line at the center of coiled sheet to be rolled and the center of the rotating support shaft.
5. control method according to claim 4, which is characterized in that the coil diameter according to coiled sheet to be rolled, pressure roller
Outer surface and coiled sheet the distance between outer surface, device parameter and measurement parameter, obtain control parameter, comprising:
The distance between outer surface according to the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet and device parameter, meter
It calculates and obtains the theoretical value of the collapsing length of telescopic oil cylinder；
Using the difference of the theoretical value of the collapsing length of telescopic oil cylinder and the actual value of collapsing length as the first control parameter.
6. control method according to claim 5, which is characterized in that the coil diameter according to coiled sheet to be rolled, pressure roller
Outer surface and coiled sheet the distance between outer surface and device parameter, the theory of the collapsing length of telescopic oil cylinder is calculated
Value, comprising:
The pass of the distance between outer surface according to the coil diameter of coiled sheet to be rolled, the outer surface of pressure roller and coiled sheet and device parameter
It is formula, the theoretical value of the collapsing length of telescopic oil cylinder is calculated, wherein the outer surface of the coil diameter of coiled sheet to be rolled, pressure roller
The relational expression of the distance between outer surface of coiled sheet and device parameter is as follows
Wherein, H indicates the theoretical value of the collapsing length of telescopic oil cylinder；A is indicated between rotating shaft center and rotating support shaft center
Distance；B indicates the length of auxiliary pressure arm；The radius of R expression coiled sheet；The length of L expression pressure arm；The radius of r expression pressure roller；A
Indicate the outer surface of pressure roller and the outer surface distance of coiled sheet；δ indicates the first angle；γ indicates the second angle.
7. a kind of planisher, which is characterized in that the planisher includes anti-tear control as claimed in any one of claims 1 to 3
Device processed.
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| CN2865896Y (en) * | 2006-02-24 | 2007-02-07 | 宝山钢铁股份有限公司 | Deep bending roller of three-roll uncoiler |
| CN201579305U (en) * | 2009-12-10 | 2010-09-15 | 中冶南方工程技术有限公司 | Deep roll-bending device capable of horizontally moving |
| CN103084430B (en) * | 2011-10-28 | 2015-10-28 | 宝山钢铁股份有限公司 | A kind of band steel that reduces produces method and the device that waist rolls over defect |
| CN103203392B (en) * | 2012-01-13 | 2015-04-22 | 宝山钢铁股份有限公司 | Thick plate decoiling device and method |
| CN105951111B (en) * | 2016-07-13 | 2018-06-22 | 宝钢股份黄石涂镀板有限公司 | It is a kind of to eliminate the device and its control method that strip waist is creased on plug-type pickling line |
| CN107008772A (en) * | 2017-06-08 | 2017-08-04 | 中国重型机械研究院股份公司 | A kind of Full-automatic cold rolled steel coils start carry uncoiling system |
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Denomination of invention: A tear resistant control device, leveling machine and control method Effective date of registration: 20240102 Granted publication date: 20190521 Pledgee: Beijing SME financing re Guarantee Co.,Ltd. Pledgor: BEIJING BOJET TIANRUN CONTROL SYSTEM DEVELOPMENT Co.,Ltd. Registration number: Y2023990000654 |