CN102548681A - Method and device for continuously stretch-bend-leveling metal strips - Google Patents
Method and device for continuously stretch-bend-leveling metal strips Download PDFInfo
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- CN102548681A CN102548681A CN2010800412603A CN201080041260A CN102548681A CN 102548681 A CN102548681 A CN 102548681A CN 2010800412603 A CN2010800412603 A CN 2010800412603A CN 201080041260 A CN201080041260 A CN 201080041260A CN 102548681 A CN102548681 A CN 102548681A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/05—Stretching combined with rolling
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Abstract
The invention relates to a method and a device for continuously stretch-bend-leveling metal strips, wherein a strip under a tensile stress below the elastic limit is alternatingly bent about at least four straightening rollers in the plastic or elastic-plastic region and thereby undergoes plastic stretching. The bending radii of all four straightening rollers are thereby set individually and independently of each other, as the straightening rollers are set up having individually controlled positions.
Description
Technical field
The present invention relates to the method and apparatus of a kind of stretching-bending-smoothing of metal tape, alternately in addition crooked and stand plastic elongation in plastic range or elastic-plastic scope at the metal tape that is under the tension that is lower than elastic limit or yield point around at least four straightener rolls.These produce plasticity or the acting straightener roll of elastic-plastic also can be referred to as draw roll.This metal tape (totally) is called degree of drawing by plastic elongation and the degree of therefore being extended.
Adopt this stretching-bending-flattening method, can smooth uneven metal tape, thereby can eliminate its not levelling.Levelling does not for example mean metal tape corrugated and/or metal tape crescent shape defective, these defectives be since in the metal tape plane length difference of metal tape fiber cause.But this not levelling also refers to such an extent that be vertically and/or metal tape warpage transversely; This warpage is because the bending moment in the metal tape causes; The warpage that for example when metal tape is bent on guide roller elastic-plastic, causes, perhaps metal coil tape around the time because the warpage that elastic-plastic distortion is caused.Lonitudinal warping also is referred to as to coil deformation (Coilset), and cupping is also referred to as cross section arch upward (cross bow).In stretching-bending-smoothing process, uneven metal tape is being in the elastic limit R of strip material
EOr technological elastic limit R
P0.01Under the tension condition under in addition crooked around the roller (alternately) of enough minor diameters, thereby through tension and crooked stack, and in metal tape, produce a kind of elasticity/plastic deformation.Metal tape is by elongation plastically, and wherein, the height of plastic elongation is referred to as degree of drawing.When plastic elongation, originally short metal tape fiber is extended relatively strongly.In the ideal case, all the metal tape fibers after smoothing all have equal lengths, so say in principle, a kind of metal tape of smoothing ideally should not have corrugated defective or metal tape crescent shape defective.
Background technology
According to stretching-bending of from reality, being known-flattening method; In principle through the alternating bending in the elastic-plastic scope; After smoothing; Still possibly in metal tape, leave residual bend moment, these residual bend moments can be used as transverse uplift and are observed out on metal tape process for producing line, in the remaining warpage of plasticity that possibly cause on the metallic plate that cutting goes out on longitudinal direction and/or the transverse direction.When each bending strength can not be coordinated with each other best, just can produce residual bend moment.Bending radius depends on metal tape data (strength condition in thickness, elastic modelling quantity, cycle, cross-direction shrinkage coefficient), metal tape tension, roller diameter and the metal tape geometrical configuration around the trend of roller.By first approximation, this geometrical configuration can be described around the angle that holds of roller through metal tape.Hold under the angle condition or under the condition of enough tensions, metal tape just has the radius of roller enough big.Then, metal tape curvature just reaches its maximum, and is continuing to keep constant under the tension situation that holds angle or increase that increases.But normally so set up this and hold angle, make metal tape no longer follow the roller radius aspect last those rollers on stretching-bending-smoothing frame at least.Even under a kind of optimum setting situation of given stretching-bending-smoothing frame, also can because of technological parameter fluctuation so produce residual bend moment.Owing in the reality, no matter be the tension of metal tape and relevant with it degree of drawing, or the intensity level of metal tape and tape thickness all will stand certain fluctuation basically.Stretching-bending of being known in the reality-flattening method more or less has sensitivity response to this fluctuation.This point means: by traditional stretching-bending-flattening method, this fluctuation can have influence on residue curvature reservation or that produced more or less strongly.This phenomenon is on those stretching-bendings-flattening method, and promptly metal tape also is suitable for around four straightener roll bullet property-plastically be out of shape on those used methods.
As everyone knows, be furnished with in employing under the situation of stretching-bending-smoothing frame of four straightener rolls,, must set up the geometrical configuration of this stretching-bending-smoothing frame in order to obtain smoothing result as well as possible.Therefore; For example can recognize a kind of stretching-bending-smoothing frame of being furnished with four straightener rolls from DE 696 08 937 T2 (or EP 0 767 014 B1); By this kind frame, the straightener roll of the top still straightener roll of below all can be adjusted to its position.Below straightener roll can pass through mechanical worm-drive mechanism adjust so as to reach have certain accuracy and improve the smoothing result in, with the straightener roll of hydraulic way operation top.So just, can set up out a kind of roller overlap joint that conforms with hope.
For more also can be with reference to disclosed stretching-bending-smoothing frame among DE 695 14 010 T2 (or EP 0 665 069 B1) and DE38 85 019 T2 (or EP 0 298 852 B1).
Similarly; Professional paper " being used to pack the benefit of a kind of new smoothing technology of steel part ": multi roll stretching-leveling apparatus (Emmanuel Dechassey; Irsid; Arcelor Group, METEC Congress, June 2003) introduce a kind of stretching-bending-leveling apparatus of being furnished with four straightener rolls.At this, the overlap joint of the overlap joint of the first smoothing unit (first roller and second roller) and the second smoothing unit (the 3rd roller and the 4th roller) all is adjustable.
DE 69 101 995 T2 (or EP 0 446 130 B1) also address the possibility of the position of all four straightener rolls of adjustment.This point at first is applicable to the replacement between maintenance position and the operating position certainly.Owing to when adopting a kind of stretching-bending-smoothing frame, need open and close again immediately this frame usually, to reach purpose through a link position between two metal wire rods or the sheet metal strip.But, prove in fact: known stretching-bending-smoothing frame or stretching-bending-flattening method are relatively more responsive to the reaction of the fluctuation of technological parameter, so residue curvature reduces to minimum degree unsatisfactorily.
Saying that in principle so-called multi roll leveller also is referred to as the multi roll leveling apparatus, is smaller to the reaction of technological parameter.Under multi roll leveller situation, metal tape will carry out repeatedly crooked around the straightener roll with minor diameter.Through using a plurality of rollers, just can produce metal tape with little residue curvature.Its shortcoming then is the following fact: multiple roll involves high maintenance cost and changes the part expense.In addition, the roller of the roller of below and top rubs like 1: 1 uni-drive gear box through backing roll or intermediate calender rolls and backing roll respectively and is connected with each other sealedly.Because metal tape plastically extends through the multi roll frame time, so under the same size condition, also can improve metal tape speed.Metal tape is also only advanced when a roller synchronously, skidding between other rollers and metal tape, then occurs.Roller normally at a high speed-metal tape process for producing line on the operation of high rotating speed.This skidding meeting impels roll vibration, and this type vibration can produce flutter trace note on surfaces of metallic strip.This situation is unacceptable as far as many purposes in the reality.For above-mentioned reasons, traditional stretching-bending-smoothing frame also combine (referring to EP 0 665 069 B1 and DE 695 14010 T2) with multi roll smoothing unit.
In addition, DE 27 50 752 also introduces the smoothing that relates to metal tape and improves the used a kind of method of mass property, the particularly electric metal tape of using, and Using such method, the metal tape that is processed is not bent with having back-pressure, and stands a kind of alternating bending of plasticity.At this, this metal tape is keeping under the situation of its plastic bending state in flat position in addition crooked, this metal tape link to each other with last bending turn to then and in elasticity or flexible substantially scope, carry out fully.Thus this have only two bending rolls that do not have a back-pressure the centre connect or after connect and be achieved under the situation of one or more guide rollers.But also dispose a plurality of bending rolls.But the result that possibly cause is: last bending meeting is done with a high as far as possible plastic bending distortion, and this metal tape still can only be flexibly or mainly is flexibly to be bent subsequently.
Summary of the invention
From known background technology; The technical problem that the present invention will solve provides a kind of stretching-bending-flattening method; This method can obtain the result of best flatness under the prerequisite of very little equipment and technology complexity, and insensitive especially to the response fluctuation of technological parameter (tension, metal tape intensity and metal tape thickness).In addition, a kind of device is proposed also, this device with simple in structure, manufacturing cost is worthwhile is its characteristics, and the result that can obtain to expect.
In order to solve above-mentioned task, the present invention proposes a kind of method that starts said type to be used for the continuously elongated-bending-smoothing of metal tape, makes bending radius on four all smoothing rollers, can distinguish individually and independently of one another and regulates.The present invention proposes the suggestion which follows for this reason: all four bending rolls are regulated with the mode of location-controlled.If metal tape is alternately in addition crooked around straightener roll more than four; Then the present invention's suggestion: the bending radius of last four straightener rolls individually and is independently of one another regulated respectively with regard to the metal tape direct of travel at least; This so realizes, promptly preferably with last at least four straightener rolls individually the opsition dependent controlled way adjust.
Utilize a kind of computation model to make an experiment; This computation model is considered the stress on the vertical and horizontal; This computation model with thickness, elastic modelling quantity, cross-direction shrinkage coefficient, cycle strength condition, metal tape tension, roller radius and the metal tape of metal tape around the geometrical configuration of the trend of roller as calculating parameter; These tests have drawn compellent conclusion: this method can provide outstanding residue curvature result, and particularly more insensitive to the reaction of the fluctuation of technological parameter.It is especially important at this: four acting bending rolls of elastic-plastic are enough opsition dependent controlled way scalable or regulate accurately independently of one another.Then, the position of straightener roll utilizes a precision and degree of regulation to set up, and this precision is ± 0.05 ° or less, preferred ± 0.02 ° or less with regard to metal tape around holding with regard to the angle of straightener roll.Metal tape preferably around the holding angle and can reach 0.5 ° to 60 ° of all straightener rolls, preferably reaches 1 ° to 35 ° around one or more straightener rolls.(always) degree of drawing for example reaches 0.1% to 1.5%, preferably reaches 0.2% to 0.6%.The metal tape tension be preferably in metal tape or strip material elastic limit 10% to 90%, best 30% to 60%.
Analog computation proves: a kind of double-roller type design misses one's aim in stretching-bending-smoothing process usually; This be because the bending moment curve of vertical and horizontal as the function of metal tape curvature not as the negative each other mirror image of simple crooked that kind, and be based on tension so be movable relative to each other.Therefore, in order to proofread and correct the plastic metal band curvature on vertical and horizontal that on first roller, is produced, it is not enough that another roller is only arranged, because like this or have only buckling moment or have only transverse curvature moment to be balanced.Therefore, under given technological parameter situation, be three in order to produce the required minimum roller number of metal tape that does not remain curvature on a kind of ideal.Prove but calculate: be furnished with in employing under the stretching-crooked frame situation of three rollers, the elimination of this in other words residue bending moment of residue bending moment that is obtained is quite responsive to the reaction of the fluctuation of technological parameter.Same conclusion also is applicable to a kind of four-roller frame, and each roller on this frame all can not individually or independently of each other be adjusted with desired accuracy.At this, the method that the present invention proposes provides to be remedied, according to this method, four rollers can be individually and independently of one another the opsition dependent controlled way adjust.
In addition; The present invention also advises: with regard to the metal tape direct of travel; Spacing between the straightener roll that at least two (directly) is provided with successively in succession is at least 15% of (maximum) metal tape width; For example be at least 30% of (maximum) metal tape width, particularly advantageously be at least 50% of (maximum) metal tape width.At this, if, then can be suitable between two straightener rolls that pairing ground (directly) is settled successively respectively, also having above-mentioned distance under all four straightener roll conditions.Therefore, the distance between two this straightener rolls for example can reach 150mm at least, preferably reaches 300mm at least.The test that with the model is the basis has caused obtaining compellent result at this: through advantageously selecting the distance between the acting straightener roll of elastic-plastic, just also can with on the metal tape width since the degree of drawing difference due to the process conditions be reduced to minimum degree or eliminate.Fact proved: bigger horizontal range can play favourable effect usually.Under the condition of the given max architecture length of stretching-crooked frame, advantageously at least one distance between the acting straightener roll of elastic-plastic is designed at least 30% of maximum metal bandwidth, yet is designed to 500mm at least.In the spacing of this most important thing is straightener roll along the metal tape direct of travel, in its stretching-bending-smoothing frame at a kind of horizontal structure corresponding to level interval.Say in principle, also can refer to the distance on incline direction or the vertical direction, this look metal tape which side in be guided and decide.
With regard to the purposes of the product of being smoothed, different straightener roll spacings are optimal, like this when these spacings be to design variablely or adjustable, just can further improve the smoothing result to the waviness defective.Therefore, according to another suggestion of the present invention, with regard to meaning independently, regulation: the spacing along the metal tape direct of travel between at least two straightener rolls is adjustable or can regulates.So optimal spacing is to be that a certain metal tape is scheduled to out according to model test.
In addition; The present invention also proposes: be used for straightener roll the position rated value and/or be used for metal tape and all utilize computation model to confirm around the rated value that holds angle of straightener roll; This computation model is considered the stress on the vertical and horizontal at least; The geometrical configuration that processing is advanced around roller as cycle strength condition, metal tape tension, roller radius and the metal tape of the metal tape thickness of calculating parameter, elastic modelling quantity, lateral shrinkage, metal tape; For metal tape thickness and the used rated value of intensity; Be so to calculate for example, make residue lonitudinal warping and residue cupping be zero or be negligible at least for the used rated value of limit of stretch.Therefore, desirable situation is to produce the metal tape with minimum residue curvature.Certainly also have another kind of possibility, utilize a kind of computation model to confirm those rated values exactly, make both to have obtained small or negligible residue cupping value, can make residue lonitudinal warping have a definite value again with standard.It is considered herein that at this: always have such applicable cases; Though wherein must avoid remaining cupping fully; But certain residue lonitudinal warping is admissible, if this residue lonitudinal warping only exists in certain certain direction and therefore only has a kind of definite symbol.
In addition, the present invention also proposes: after one or more straightener rolls, for example after last straightener roll, particularly after each straightener roll, on the metal tape width, measure the cross section of metal tape and arch upward.Arch upward and can import an adjusting device then in measured cross section, this adjusting device can so be proofreaied and correct according to measured value and held angle or roller position, has enough little residue lonitudinal warping and the cupped metal tape of residue thereby can produce.
According to this, the present invention at first comprises following embodiment, thereby wherein utilizes rated value that Mathematical Modeling confirms to be used for bending radius and be used for roller position and/or be used to hold the rated value of angle, utilizes these rated values to come operating equipment then.Simulated test proves: also can cause obtaining excellent result under the situation of certain fluctuation even a kind of like this processing mode has at technological parameter.Also have a kind of possibility, be exactly can be in the operation process of equipment or even in equipment running process, proofread and correct those rated values, also can proofread and correct those rated values according to the result who obtains through overtesting.This correction can " off-line " be carried out.Like what addressed, also have a kind of possibility, can consider under the situation of measured value exactly, carry out " online " with the mode of control or adjusting and proofread and correct.This adjusting also can be based on a kind of computation model; This computation model is considered the stress on the vertical and horizontal at least; The geometrical configuration that processing is advanced around roller to the cycle of constriction coefficient, metal tape strength condition, metal tape tension, roller radius and metal tape as the metal tape thickness of calculating parameter, elastic modelling quantity, mould, and the cross section confirmed arched upward be associated with the residue lonitudinal warping or the metal tape residue cupping of metal tape.
Described computation model can be based on a kind of Finite Element Method, and this method also can be considered stress and the percentage elongation on the metal tape width.Perhaps measured metal tape unevenness before smoothing according to greatest expected; Can according to the optimum level spacing that Finite Element Method calculates the optimum stretch degree and/or calculates the acting roller of elastic-plastic; Thereby obtain the least residue unevenness, refer specifically to metal tape corrugated defective and crescent shape defective here.
Theme of the present invention also relates to a kind of device, is used to adopt a kind of method of said type to realize the continuously elongated-bending-smoothing of metal tape.This device has at least four bending rolls, and one to be in metal tape under the tension that is lower than elastic limit alternately in addition crooked around these bending rolls in plasticity or elastic-plastic scope.In addition, this device also has at least one control and/or adjusting device.The present invention proposes: the bending radius on four all straightener rolls can be regulated individually and independently of one another.The present invention is also preferred to be proposed: four all straightener rolls all link to each other with adjusting device, but and the opsition dependent controlled way regulate.For this reason, each single straightener roll all is furnished with one or more actuator, screw jack preferably that can accurate adjustment respectively.The diameter of four one or more or preferably all straightener rolls is 15mm to 150mm for example, is preferably 25mm to 80mm.As addressed, desirable especially is to utilize the big spacing between each straightener roll to carry out work.Particularly advantageous is so to design this device, makes that these spacings are adjustable, and its mode for example is: variable adjustment can be carried out along the metal tape direct of travel in the position of at least one straightener roll.
Another requirement that smoothing is handled is: except not having residue curvature, also metal tape corrugated defective/metal tape crescent shape defective is minimized.Must eliminate before smoothing and just be present in the corrugated defective on the metal tape, smoothing processing procedure itself also must not produce new corrugated defective.Stretching-such problem can occur in the process of bending-smoothing: the metal tape that abuts on the roller can the distortion of elastic-plastic ground, thereby and can plastically extend.Along with the plasticity longitudinal tensile strain of metal tape, also just cause a kind of plasticity of metal tape width to reduce.In other words, the metal tape section that directly occupy the roller front is wider than the metal tape section that directly occupy the roller back.But because metal tape can not change its width suddenly once, thereby in the metal tape plane, form shear stress, this shear stress all is Protean on metal tape width and metal tape length.These shear stress cause on the metal tape width, producing a kind of metal tape distortion of uneven plasticity generally again, thereby cause the different plasticity extend longitudinally on the metal tape width, thereby and cause through the caused corrugated defective of smoothing processing procedure.This type corrugated defective all is medium corrugated defective usually, strengthens along with the increase of degree of drawing.The test that with the model is the basis has caused obtaining unexpected result at this: these aspect the metal tape width because of the degree of drawing difference due to the process conditions through advantageously selecting the spacing between the acting roller of elastic-plastic, can be reduced to minimum level or can eliminate.Proved already: general bigger horizontal range can play a part favourable.Look the purposes of the product of being smoothed and decide, each different roller spacing is optimal, thereby if having at least a straightener roll to design to such an extent that can carry out level and regulate, then can further improve the smoothing result to the corrugated defective.
Under the condition of the big level interval of the acting straightener roll of elastic-plastic, the submergence depth of straightener roll is sizable in given holding under the angle condition.For the tie point through two roll coil of strips, for example punching press tie point or soldered must be opened stretching-crooked frame usually, and just these rollers are removed.At this, if backhaul is very big, then this process must last very long.If metal tape is in this time under a kind of " online " situation and continues to advance, then corollary is big around the metal tape length of the not smoothing change of tie point.This situation is said so nonconforming in principle.Therefore the present invention proposes a kind of yes-no decision: in the front of the acting straightener roll of at least one elastic-plastic; Dispose an adjacent guide roller and/or dispose an adjacent guide roller at the back at it; This adjacent guide roller preferably has the diameter of the diameter that is three times in straightener roll at least; Particularly advantageous is preferably to have the diameter of the diameter that decuples straightener roll at least.Like this, just can significantly shorten the adjustment stroke, thereby significantly shorten the metal tape section of not smoothed.At this, guide roller has a big diameter like this, makes as far as at least a portion of the metal tape thickness range of being smoothed, only can produce a kind of simple elastic metal strip distortion.Favourable way is that latter two straightener roll does not dispose centre-guide roller at least, so that when adjusting holds angle, obtain high as far as possible accuracy.
Also have a kind of possibility, have at least one to have a kind of recessed or protruding roller profile in the adjacent guide roller.In addition, in two adjacent guide rollers or also can be that two adjacent guide rollers design in a horizontal direction and/or in vertical direction, have a kind of roller flexibility.In the front of the acting straightener roll of first elastic-plastic, can settle one at least by idler roller 120 ° of cornerites, variable contour or guide roller.Take this measure just can reach following purpose: to go out a definite tension in the acting straightener roll adjusted of at least one elastic-plastic and distribute along the metal tape width; Distribute so as to can so influencing, make that the metal tape after smoothing has as far as possible little residue corrugated defective at degree of drawing along the metal tape width.Particularly the raising of the tension on the metal tape edge can suppress moderate corrugated defective.
In addition, the acting straightener roll of elastic-plastic can be supported through backing roll for resisting deflection.For example can use the backing roll of segmentation.Like this, the acting straightener roll of elastic-plastic is supported for the backing roll that resists two intermediate calender rolls and the three row's segmentations in other words of backing roll that deflection can be through two row segmentations.
Description of drawings
To elaborate to the present invention with reference to the accompanying drawing of only representing an embodiment below.
Accompanying drawing is represented:
Fig. 1 the present invention proposes is used to stretch-rough schematic view of the device of bending-smoothing;
The form of implementation of the change of Fig. 2 device shown in Figure 1;
The residue lonitudinal warping that Fig. 3 is calculated a metal tape, this metal tape is smoothed with device shown in Figure 1; And
Fig. 4 remains lonitudinal warping, and this residue lonitudinal warping is to utilize a kind of traditional three-roller type frame of being furnished with independent adjusting device to obtain.
The specific embodiment
A kind of device that is used for the continuously elongated-bending-smoothing of metal tape 1 shown in the drawings.In each embodiment, it is alternately in addition crooked in plasticity or elastic-plastic scope around these straightener rolls that this device has a metal tape 1 that 2, one of four straightener rolls are under the tension that is lower than elastic limit.In these straightener rolls 2 each is all being supported by at least two backing rolls 3 by known way at this.Metal tape 1 is under the tension that is lower than elastic limit.In addition, also disposed the idler roller that does not illustrate in the drawings, for example disposed a brake roller group and disposed a sliding roller group at outlet one end at inlet one end.
According to the present invention, the bending radius on all four straightener rolls can be regulated respectively or independently of one another.For this reason; Four all straightener rolls 2 can utilize an adjusting device not shown in figures and utilize actuator not shown in figures, for example screw jack opsition dependent controlled way to regulate, and this carries out on a direction V perpendicular to metal tape direct of travel R certainly.This point is that the POF that is represented by dotted lines through straightener roll 2 shows in the accompanying drawings.Each parameter and particularly roller radius and metal tape tension are so to coordinate, and make metal tape (still) on four all straightener rolls not comply with the roller radius.Thereby can just can realize the change of the bending radius that each is relevant through to the adjusting of the adjustment degree of depth with therefore through holding angle to the adjusting of position with through setting associated therewith.
In the embodiment shown in fig. 1, between four straightener rolls 2, do not settle other roller.Only before whole straightener roll device with settled guide roller 4 afterwards.
Relatively, Fig. 2 illustrates the form of implementation that a change changes, and wherein, has settled a guide roller 4a in the front of each straightener roll 2 respectively and has settled a guide roller 4b at the back at each straightener roll.Even by this form of implementation, the position of four all straightener rolls 2 also can the mode with location-controlled change on perpendicular to metal tape direct of travel R.
Though it is preferred saying form of implementation shown in Figure 1 in principle; Because this form of implementation is except the acting roll line roller of the elasticity of the arrival end and the port of export; (pure elasticity the is acting) roller that does not have other, but form of implementation shown in Figure 2 also possibly be favourable.Also can these two kinds of forms of implementation be combined.To the acting guide roller of simple elasticity, what must explain is: these guide rollers only just play simple elastic reaction under the situation of metal tape thin and/or higher-strength, for example under the aluminium strip situation in a tape thickness scope below the millimeter.In addition, even they only have little elastic-plastic effect, also the smoothing result possibly had influence on aspect the residue curvature.If a stretching-bending-smoothing frame will cover a bigger metal tape thickness range, then can especially preferably abandon guide roller.
For the startup of this equipment, must utilize a kind of Mathematical Modeling to confirm the accurate nominal position of all four straightener rolls 2.Possiblely at this be; At first utilize a computation model to confirm the specified angle that holds; This computation model is considered the stress on the vertical and horizontal at least, and thickness, elastic modelling quantity, cross-direction shrinkage coefficient, cycle strength condition, metal tape tension, roller radius and the metal tape of metal tape are handled as calculating parameter around the geometrical configuration of the trend of roller; To metal tape thickness and rated value intensity, for example, so calculate the rated value of limit of stretch, make that residue lonitudinal warping and residue cupping are zero or almost nil.Can accurately regulate the position of straightener roll 2 in this way.So just can carry out the calibration of these positions according to experimental result " off-line ".
At this, the fact of particular importance is: the adjusting of once precisely carrying out just can guarantee to remain the curvature situation for the fluctuation of technological parameter as being extremely insensitive particularly for the tension of metal tape and the fluctuation of intensity level and tape thickness.Because in fact the metal tape of coiled material stands certain intensity fluctuation and thickness fluctuation usually, and tension can not always keep very stable, so utilize the known so far residue curvature that method obtained also just to stand big fluctuation.This point is able to avoid in category of the present invention.The method that the present invention proposes shows a kind of satisfied residue curvature situation of making us especially.For this reason can be with reference to the comparative observation shown in figure 3 and 4.
Fig. 3 representes the function of a kind of residue lonitudinal warping k-L (pressing 1/m) of aluminium strip as degree of drawing S (pressing %), and this aluminium strip is to smooth with a kind of device shown in Figure 1.This relates to the value of utilizing a kind of Mathematical Modeling to try to achieve.In the present embodiment, adopt have ± yield point of the 250MPa of 10MPa fluctuation with have ± the metal tape thickness of the 0.28mm of 0.05mm.What permission also was shown in the drawings is ± 0.5m
-1The limiting value of residue lonitudinal warping.As can be seen from the figure: the residue lonitudinal warping in given range of tolerable variance is in one and quite is approximately in the 0.31-0.59% degree of drawing scope.In addition, the noticeable fact is: only have ± 0.15m for the residue lonitudinal warping in ± 0.05% degree of drawing scope at one
-1Fluctuation.Not shown residue cupping is then always less than residue lonitudinal warping.In addition, be limited in for the residue lonitudinal warping in the degree of drawing scope of 0.36-0.52% in the negative scope with minor swing very at one.Through holding the adaptive of angle on roller in the end, just can the trend of the residue curvature in the curve map be faced upward or downward passing.Therefore, also can set positive residue lonitudinal warping.
Relatively, Fig. 4 representes to utilize a kind of a kind of corresponding simulation of three-roller type frame, and wherein, each roller also can the opsition dependent controlled way be regulated.As can be seen from the figure: under the situation of degree of drawing fluctuation, residue lonitudinal warping fluctuates in an obviously bigger scope.It is in the scope of 0.33-0.36% for degree of drawing that limiting value only is maintained at one.This point in fact for example boost phase with delay to be difficult in the stage guarantee.
In addition, the noticeable in a word fact is: the available fewer straightener roll of the result who is addressed reaches, thus the equipment that the present invention proposes generally speaking its characteristics be simple in structure, manufacturing cost is worthwhile.
If carry out work by a variant equipment of being furnished with the straightener roll more than four, then the angle that holds of its last at least four straightener rolls can single adjusting according to the present invention, so that obtain similar gratifying a kind of residue curvature situation.The method that proposes by the present invention holds under the situation of angle advantageously having selected, and remains cupped numerical value and will be significantly less than residue lonitudinal warping.So being equivalent to the cross section of a metal tape that on stretching-bending-smoothing frame, under the metal tape tension, records approx, the residue lonitudinal warping of a sheet metal that cutting comes out after smoothing arches upward.Therefore also following suggestion can be proposed: measure the cross section at outlet one end at least and arch upward; Infer residue lonitudinal warping from this measured value; And when deviation occurring with desirable value; Then adjustment holds angle, thereby also just adjusts the position, arches upward up to adjusting the cross section that is equivalent to desirable residue lonitudinal warping.
A simple method is the angle that holds on the acting roller of last elastic-plastic of adjustment, thereby faces upward or downward the trend of the residue curvature shown in Fig. 3 mobile.Here also can consider the regulating loop of a closure.In addition, following way also possibly be useful: after elastic-plastic bending each time, measure the cross section and arch upward, so as to optimizing the setting that all hold angle, and computation model capable of using is adjusted.Configurable for this reason corresponding measurement mechanism, these measurement mechanisms are connected with adjusting device with a control.This situation is not shown in figures.Utilize a kind of limited-theoretical optimal cross section that model of element just can for example dope after each roller arches upward.Can so regulate each roller then, make that result and the result calculated measured are consistent as far as possible well.Can think that then actual smoothing process only differs very little with the result of Theoretical Calculation and be consistent well with the smoothing result.
As addressed, the adjusting of the location-controlled of straightener roll (transverse to the metal tape direct of travel) but preferably utilize a kind of screw jack of accurate adjustment to carry out.This accurate adjustment element carries out work with the governing speed of a kind of 2-3mm/ second usually.For a tie point (for example being punching press tie point or soldered) through two reels, advantageously open stretching-crooked frame in case of necessity, just remove roller.If backhaul at this moment is very big, but the process of the screw jack of then this utilization accurate adjustment can last very long.Therefore, press the embodiment shown in Fig. 2, disposed guide roller 4a that ranks forefront and the guide roller 4b that leans backward.So just, can shorten adjustment stroke greatly.
Alternatively perhaps there is such possibility: be exactly except accurate adjustment (for example passing through screw jack), also can set a kind of quick adjustment additionally.This possibility is particularly suitable for embodiment as shown in Figure 1, but in principle also applicable to embodiment as shown in Figure 2.So straightener roll is furnished with a quick adjustment mechanism by way of parenthesis, for example dispose cylinder formula governor motion that surge or pneumatic.At this can advantageously be common adjustment mechanisms of a plurality of straightener roll configurations.Therefore, for example by embodiment shown in Figure 1, preferably first straightener roll and the 3rd straightener roll are placed on the common upper frame, this framework one or more cylinder formula governor motions capable of using are regulated.Correspondingly can second straightener roll and the 4th straightener roll be placed on the underframe, the same one or more cylinder formula governor motions capable of using of this framework are regulated.Quick adjustment for example can be carried out between two end stops that are used to open and close stretching-bending-smoothing frame.These possibilities all do not illustrate in the drawings.
Claims (31)
1. the method that is used for continuously elongated-bending-smoothing metal tape; Wherein, A metal tape that is under the tension that is lower than elastic limit is alternately in addition crooked and meanwhile stand plastic elongation in plasticity or elastic-plastic scope around at least four straightener rolls, and it is characterized in that: the bending radius on four all straightener rolls can individually and independently of one another be regulated respectively.
2. by the described method of claim 1, it is characterized in that: four all straightener roll opsition dependent controlled way are adjusted, so that regulate bending radius.
3. by claim 1 or 2 described methods; Wherein, Metal tape is in addition crooked around straightener roll more than four; It is characterized in that: the bending radius on (with regard to the metal tape direct of travel) last four straightener rolls can be distinguished individually and independently of one another and regulates at least, and this realizes that so promptly preferably said at least last four straightener rolls individually opsition dependent controlled way are adjusted.
4. by each described method in the claim 1 to 3; It is characterized in that: the position of straightener roll can enough a kind of precision, for example degree of regulation is set up, and this precision is ± 0.05 ° or littler, preferred ± 0.02 ° or littler with regard to metal tape around holding with regard to the angle of straightener roll
5. by each described method in the claim 1 to 4, it is characterized in that: metal tape around one or more, preferably the angle that holds around all four straightener rolls is 0.5 °-60 °, is preferably 1 °-35 °.
6. by each described method in the claim 1 to 5, it is characterized in that: degree of drawing is 0.1% to 1.5%, for example is 0.2% to 0.6%.
7. by each described method in the claim 1 to 6, it is characterized in that: the metal tape tension is 10% to 90% of elastic limit metal tape or strip material, is preferably 30% to 60%.
8. by each described method in the claim 1 to 7; It is characterized in that: the spacing between the straightener roll that with regard to the metal tape direct of travel, is provided with in succession successively at least two (directly) is at least 15% of (maximum) metal tape width; Preferably be at least 30% of (maximum) metal tape width, be preferably 50% of (maximum) metal tape width especially.
9. by each described method in the claim 1 to 8, it is characterized in that: two (directly) successively in succession the spacing between the straightener roll of setting be at least 150mm, preferably be at least 300mm.
10. by claim 8 and 9 described methods, it is characterized in that: for all four straightener rolls, between the straightener roll of setting said spacing is set in succession successively in per two (directly).
11. be used for the method for continuously elongated-bending-smoothing metal tape; Particularly by each described method in the claim 1 to 10; Wherein, A metal tape that is under the tension that is lower than elastic limit is alternately in addition crooked and meanwhile stand plastic elongation in plasticity or elastic-plastic scope around a plurality of straightener rolls, and it is characterized in that: the spacing on the metal tape direct of travel between at least two straightener rolls is set at variable.
12. by each described method in the claim 1 to 11; It is characterized in that: utilize a kind of computation model confirm to be used for straightener roll the position rated value and/or be used for the rated value that hold angle of metal tape around straightener roll; This computation model is considered the stress on the vertical and horizontal at least, with metal tape thickness, metal tape elastic modelling quantity, cross-direction shrinkage coefficient, cycle strength condition, metal tape tension, roller radius and/or metal tape around the rated value of the rated value of the geometrical configuration of the trend of roller and/or metal tape thickness and/or intensity for example the rated value of limit of stretch handle as calculating parameter.
13. by the described method of claim 12, it is characterized in that: each rated value is to utilize computation model to confirm with such standard, promptly remaining lonitudinal warping is zero with residue cupping (roughly).
14. by the described method of claim 12, it is characterized in that: each rated value is to utilize computation model to confirm with such standard, promptly remaining cupping (roughly) is zero, and residue lonitudinal warping is a definite value.
15., it is characterized in that: after one or more straightener rolls, for example in the end after straightener roll, preferably after each straightener roll, on the metal tape width, measure the cross section of metal tape and arch upward by each described method in the claim 1 to 14.
16. by the described method of claim 15, it is characterized in that: the adjusting of arching upward and realize the position under the situation of measured value or hold angle in the cross section that obtains considering.
17. by the described method of claim 16; It is characterized in that: adjusting is the basis with a kind of computation model; This computation model is considered the stress on the vertical and horizontal at least; Processing is as metal tape thickness, the elastic modelling quantity of metal tape, cross-direction shrinkage coefficient, the cycle strength condition of calculating parameter; Metal tape tension, roller radius and metal tape be around the geometrical configuration of the trend of roller, and the cross section of confirming arched upward be associated with metal tape residue lonitudinal warping or metal tape residue cupping.
18. by each described method in the claim 1 to 17; It is characterized in that: one or more said computation models all are the basis with the FInite Element; Wherein, Preferably with reference to greatest expected or before smoothing measured metal tape unevenness, calculate the optimum stretch degree and/or calculated the optimum level spacing of each straightener roll of elasticity/plasticity effect according to FInite Element, said optimum stretch degree and/or optimum level spacing cause the least residue unevenness.
19. be used for coming the device of continuously elongated-bending-smoothing metal tape (1) by each described method of claim 1 to 18; This device comprises at least four straightener rolls (2); A metal tape (1) that is under the tension that is lower than elastic limit is alternately in addition crooked in plasticity or elastic-plastic scope around these straightener rolls; And this device comprises at least one control and/or adjusting device, it is characterized in that: the bending radius on all four straightener rolls (2) can individually and independently of one another be regulated respectively.
20. by the described device of claim 19, it is characterized in that: all four straightener rolls (2) all link to each other with an adjusting device and can the opsition dependent controlled way regulate.
21. by claim 19 or 20 described devices, it is characterized in that: diameters one or more, preferably all four straightener rolls (2) are 15mm-150mm, for example are 25mm-80mm.
22. by each described device in the claim 19 to 21; It is characterized in that: latter two straightener roll (2) at least in said four straightener rolls (2), preferred last three straightener rolls (2) directly are provided with successively in succession, and other roller is not set between them.
23. by the described device of claim 22, it is characterized in that: four straightener rolls (2) all are directly one after the other to settle successively, and other roller is not set between them.
24. be used for coming the device of continuously elongated-bending-smoothing metal tape, particularly by each described device in the claim 19 to 23 by each described method of claim 1 to 18; This device comprises a plurality of straightener rolls (2); A metal tape (1) that is under the tension that is lower than elastic limit is alternately in addition crooked in plasticity or elastic-plastic scope around these straightener rolls, and it is characterized in that: the spacing between at least two straightener rolls (2) can be set to variable on metal tape direct of travel (R).
25. by the described device of claim 24, it is characterized in that: the position of at least one straightener roll (2), preferably the position of all straightener rolls (2) can be conditioned along metal tape direct of travel (R).
26. by each described device in the claim 19 to 25; It is characterized in that: settled an adjacent guide roller (4 in the front and/or the back of a straightener roll (2) at least; 4a, 4b), this guide roller or these guide rollers (4; 4a, the diameter that 4b) is had preferably are three times of diameter of straightener roll at least, are preferably at least ten times of diameter of straightener roll especially.
27. by the described device of claim 26, it is characterized in that: preposition guide roller (4,4a) and/or rearmounted guide roller (4,4b) have recessed or protruding roller profile.
28. by claim 26 or 28 described devices, it is characterized in that: preposition guide roller (4,4a) and/or rearmounted guide roller (4,4b) be furnished with along roller turning mechanism horizontal direction and/or vertically.
29. by each described device in the claim 19 to 28; It is characterized in that: the idler roller or the guide roller of an idler roller or guide roller, preferred variable contour are set in the front of first straightener roll (2), and said idler roller or guide roller are for example held with at least 120 ° angle by metal tape.
30. by each described device in the claim 19 to 29, it is characterized in that: straightener roll (2) can be adjusted by means of actuator, for example screw jack.
31. by each described device in the claim 19 to 30, it is characterized in that: the straightener roll of each adjustable positions (2) or a plurality of straightener roll (2) of distinguishing adjusting position also jointly attach and are provided with a fast adjuster.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009041852A DE102009041852A1 (en) | 2009-09-18 | 2009-09-18 | Method and apparatus for continuous stretch bending of metal strips |
| DE102009041852.0 | 2009-09-18 | ||
| PCT/EP2010/063284 WO2011032890A1 (en) | 2009-09-18 | 2010-09-10 | Method and device for continuously stretch-bend-leveling metal strips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102548681A true CN102548681A (en) | 2012-07-04 |
| CN102548681B CN102548681B (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080041260.3A Expired - Fee Related CN102548681B (en) | 2009-09-18 | 2010-09-10 | For the method and apparatus of continuously elongated-bending-smoothing metal tape |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20120174643A1 (en) |
| EP (1) | EP2477764B1 (en) |
| KR (1) | KR101651313B1 (en) |
| CN (1) | CN102548681B (en) |
| DE (1) | DE102009041852A1 (en) |
| ES (1) | ES2574616T3 (en) |
| RU (1) | RU2540286C2 (en) |
| WO (1) | WO2011032890A1 (en) |
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| CN108351206A (en) * | 2015-11-10 | 2018-07-31 | 首要金属科技法国有限责任公司 | The method and relevant apparatus of flatness for measuring metal product |
| CN109952164A (en) * | 2016-11-09 | 2019-06-28 | 矿山机械和轧钢机械制造有限公司 | Method and device for stretch bending leveling metal strip |
| CN109991163A (en) * | 2019-04-22 | 2019-07-09 | 泉州市五加一电子商务有限公司 | A kind of detection device of adhesive |
| CN110914005A (en) * | 2017-08-04 | 2020-03-24 | 首要金属科技法国有限责任公司 | Multi-roll metal strip leveler |
| CN113699341A (en) * | 2021-10-29 | 2021-11-26 | 宁波德洲精密电子有限公司 | Lead frame material internal stress adjustment and leveling equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108351206A (en) * | 2015-11-10 | 2018-07-31 | 首要金属科技法国有限责任公司 | The method and relevant apparatus of flatness for measuring metal product |
| CN108351206B (en) * | 2015-11-10 | 2021-03-12 | 首要金属科技法国有限责任公司 | Method for measuring the flatness of a metal product and related device |
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| CN109952164A (en) * | 2016-11-09 | 2019-06-28 | 矿山机械和轧钢机械制造有限公司 | Method and device for stretch bending leveling metal strip |
| CN110914005A (en) * | 2017-08-04 | 2020-03-24 | 首要金属科技法国有限责任公司 | Multi-roll metal strip leveler |
| CN109991163A (en) * | 2019-04-22 | 2019-07-09 | 泉州市五加一电子商务有限公司 | A kind of detection device of adhesive |
| CN109991163B (en) * | 2019-04-22 | 2021-12-21 | 湖南继兴科技有限公司 | Adhesive detection equipment |
| CN113699341A (en) * | 2021-10-29 | 2021-11-26 | 宁波德洲精密电子有限公司 | Lead frame material internal stress adjustment and leveling equipment |
| CN113699341B (en) * | 2021-10-29 | 2021-12-31 | 宁波德洲精密电子有限公司 | Lead frame material internal stress adjustment and leveling equipment |
| CN116910944A (en) * | 2023-09-13 | 2023-10-20 | 中基科技(武汉)有限公司 | Technological parameter determining method and device of marine profile straightening machine and electronic equipment |
| CN116910944B (en) * | 2023-09-13 | 2023-12-26 | 中基科技(武汉)有限公司 | Technological parameter determining method and device of marine profile straightening machine and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101651313B1 (en) | 2016-08-25 |
| RU2540286C2 (en) | 2015-02-10 |
| EP2477764A1 (en) | 2012-07-25 |
| DE102009041852A1 (en) | 2011-04-07 |
| EP2477764B1 (en) | 2016-04-20 |
| RU2012115467A (en) | 2013-10-27 |
| CN102548681B (en) | 2015-11-25 |
| ES2574616T3 (en) | 2016-06-21 |
| KR20120069692A (en) | 2012-06-28 |
| US20120174643A1 (en) | 2012-07-12 |
| WO2011032890A1 (en) | 2011-03-24 |
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