CN102548681B - For the method and apparatus of continuously elongated-bending-smoothing metal tape - Google Patents
For the method and apparatus of continuously elongated-bending-smoothing metal tape Download PDFInfo
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- CN102548681B CN102548681B CN201080041260.3A CN201080041260A CN102548681B CN 102548681 B CN102548681 B CN 102548681B CN 201080041260 A CN201080041260 A CN 201080041260A CN 102548681 B CN102548681 B CN 102548681B
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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 present invention relates to a kind of method and a kind of device, for metal tape continuously elongated-bending-smoothing, one is in and is alternately bent within the scope of plasticity or elastic-plastic around at least four straightener rolls lower than the metal tape under the tension of elastic limit and meanwhile to stand plastic elongation.In the case, the bending radius on all four straightener rolls can individually and independently of one another be regulated respectively, and at this, each straightener roll mode that opsition dependent is controlled is respectively regulated.
Description
Technical field
The present invention relates to the method and apparatus of a kind of stretching of metal tape-bending-smoothing, alternately to be bent within the scope of plastic range or elastic-plastic around at least four straightener rolls lower than the metal tape under the tension of elastic limit or yield point and to stand plastic elongation being in.The straightener roll that these generation plasticity or elastic-plastic work also can be referred to as draw roll.This metal tape (totally) is called degree of drawing by plastic elongation and the degree that is therefore stretched.
Adopt this stretching-bending-flattening method, uneven metal tape can be smoothed, thus its not levelling can be eliminated.Levelling does not such as mean metal tape corrugated and/or metal tape crescent shape defect, and these defects are because in metal tape plane, the length difference of metal tape fiber causes.But this not levelling also refers to be longitudinal and/or transversely metal tape warpage, this warpage is because the bending moment in metal tape causes, the warpage such as caused when metal tape is bent on a guide elastic-plastic, or metal coil tape around time be out of shape the warpage caused due to elastic-plastic.Lonitudinal warping is also referred to as coiling deformation (Coilset), and cupping arches upward (crossbow) also referred to as cross section.In stretching-bending-smoothing process, uneven metal tape is being in the elastic limit R of strip material
eor technology elastic limit R
p0.01under tension condition under bent around the roller (alternately) of enough minor diameters, thus by tension and bending superposing, and in metal tape, produce a kind of elasticity/plastic deformation.Metal tape is plastically extended, and wherein, the height of plastic elongation is referred to as degree of drawing.When plastic elongation, originally short metal tape fiber is stretched relatively strongly.In the ideal case, all metal tape fibers after smoothing all have equal length, so say in principle, a kind of metal tape of smoothing ideally should not have corrugated defect or metal tape crescent shape defect.
Background technology
According to stretching known from reality-bending-flattening method, in principle by the alternating bending within the scope of elastic-plastic, after smoothing, still may leave residual bend moment in metal tape, these residual bend moments can be out observed as transverse uplift on metal tape process for producing line, and the metallic plate that cutting goes out may cause the remaining warpage of the plasticity on longitudinal direction and/or transverse direction.When each bending strength can not coordinated with each other best time, just can produce residual bend moment.Bending radius depends on that metal tape data (strength condition in thickness, elastic modelling quantity, cycle, transverse shrinking coefficient), metal tape tension, roller diameter and metal tape are around the geometrical configuration of the trend of roller.By first approximation, this geometrical configuration can be described by the angle that holds of metal tape around roller.Enough large hold angle conditions under or under the condition of enough tensions, metal tape just has the radius of roller.Then, metal tape curvature just reaches its maximum, and is continuing to keep constant in the tension situation holding angle or increase increased.But normally so set up this and hold angle, make no longer to follow roller radius in metal tape those rollers last at least in stretching-bending-smoothing frame.Even if in the optimum setting situation of a kind of given stretching-bending-smoothing frame, also can because of technological parameter fluctuation so produce residual bend moment.Due in reality, no matter be the tension of metal tape and associated degree of drawing, or the intensity level of metal tape and tape thickness all to stand certain fluctuation substantially.Stretching known in reality-bending-flattening method more or less has sensitivity response to this fluctuation.This point means: by traditional stretching-bending-flattening method, residue curvature that is that this fluctuation can have influence on reservation more or less strongly or that produce.This phenomenon those stretch-bending-flattening method on, namely metal tape around four straightener rolls elastic-be plastically out of shape in those methods used, be also applicable.
As everyone knows, when adopt be furnished with the stretching of four straightener rolls-bending-smoothing frame, in order to obtain smoothing result as well as possible, the geometrical configuration of this stretching-bending-smoothing frame must be set up.Therefore, such as can recognize a kind of stretching-bending-smoothing frame of being furnished with four straightener rolls from DE69608937T2 (or EP0767014B1), by this kind of frame, top straightener roll or below straightener roll all can adjust for its position.Straightener roll in below can through mechanical worm-drive mechanism adjusted so as to reach have certain accuracy improve smoothing result while, with hydraulic way operation top straightener roll.So just, a kind of roller overlap joint conforming with hope can be set up out.
In order to more also can with reference to stretching disclosed in DE69514010T2 (or EP0665069B1) and DE3885019T2 (or EP0298852B1)-bending-smoothing frame.
Similarly, professional paper " for packing the benefit of a kind of smoothing technique newly of steel part ": multi roll stretching-leveling apparatus (EmmanuelDechassey, Irsid, ArcelorGroup, METECCongress, June2003) introduce a kind of stretching-bending-leveling apparatus being furnished with four straightener rolls.At this, the overlap joint that the first overlap joint and second of smoothing unit (the first roller and the second roller) smooths unit (the 3rd roller and the 4th roller) is all adjustable.
DE69101995T2 (or EP0446130B1) also addresses the possibility of the position adjusting all four straightener rolls.First this point is applicable to the replacement between maintenance position and operating position certainly.Due to adopt a kind of to stretch-bending-smoothing frame time, usually need open and close again this frame immediately, to be reached through the object of a link position between two metal wire rods or sheet metal strip.But, in fact prove: known stretching-bending-smoothing frame or stretching-bending-reaction of flattening method to the fluctuation of technological parameter is more responsive, so residue curvature reduces to minimum degree unsatisfactorily.
Say in principle, so-called multi roll leveller, is also referred to as multi roll leveling apparatus, is smaller to the reaction of technological parameter.In multi roll leveller situation, metal tape repeatedly will bend around the straightener roll with minor diameter.By using multiple roller, the metal tape with little residue curvature just can be produced.Its shortcoming is then the following fact: plurality of roller involves high maintenance cost and changes part expense.In addition, the roller of below and the roller of top are through backing roll or intermediate calender rolls and backing roll respectively and rub as 1: 1 uni-drive gear box and be connected with each other in locking manner.Because metal tape is plastically extending by during multi roll frame, so also metal tape speed can be improved under same size condition.Metal tape is also only synchronously advanced when a roller, between other roller and metal tapes, then occur skidding.Roller normally runs with high rotating speed on high speed-metal tape process for producing line.This skidding can impel roll vibration, and this kind of vibration can produce flutter trace note on surfaces of metallic strip.In reality, this situation is unacceptable for many purposes.For above-mentioned reasons, traditional stretching-bending-smoothing frame is also smoothed unit and is combined (referring to EP0665069B1 and DE69514010T2) with multi roll.
In addition, DE2750752 also introduces the smoothing that relates to metal tape and modification quality characteristic a kind of method used, and particularly electrically use metal tape, Using such method, processed metal tape is bent without back-pressure, and stands a kind of alternating bending of plasticity.At this, this metal tape is bent in flat position when keeping its plastic bending state, this metal tape with last bending be connected turn to, perform in flexible scope in elasticity or substantially completely.Thus when this only have two do not have the bending roll of back-pressure centre connect or after connect one or more guide roller be achieved.But also configure multiple bending roll.But the result that may cause is: last bending meeting is done with a high as far as possible plastic bending deformation, and this metal tape still can only flexibly or mainly flexibly be bent subsequently.
Summary of the invention
From known background technology, the technical problem to be solved in the present invention is to provide a kind of-bending-flattening method that stretches, the 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, also propose a kind of device, this device is simple with structure, manufacturing cost is worthwhile is its feature, and the result of expectation can be obtained.
In order to solve above-mentioned task, the present invention propose a kind of method starting described type for metal tape continuously elongated-bending-smoothing, bending radius can individually and independently of one another be regulated respectively on all four smoothing rollers.The present invention proposes the suggestion which follows for this reason: all four bending rolls are regulated in the mode of location-controlled.If metal tape is alternately bent around the straightener roll of more than four, then the present invention's suggestion: at least the bending radius of last four straightener rolls individually and is independently of one another regulated respectively with regard to metal tape direct of travel, this so realizes, and namely preferably at least last four straightener rolls mode that individually opsition dependent is controlled is adjusted.
A kind of computation model is utilized to test, this computation model considers the stress on vertical and horizontal, this computation model using the thickness of metal tape, elastic modelling quantity, transverse shrinking coefficient, periodic intensity situation, metal tape tension, roller radius and metal tape around the geometrical configuration of the trend of roller as calculating parameter, these tests have drawn compellent conclusion: the method can provide outstanding residue curvature result, and particularly more insensitive to the reaction of the fluctuation of technological parameter.At this particularly importantly: the bending roll that four elastic-plastics work independently of one another enough modes that accurately opsition dependent is controlled is adjustable or regulated.Then, the position of straightener roll utilizes a precision and degree of regulation to be 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 angle of straightener roll.Metal tape, around one or more straightener roll holding angle and can reach 0.5 ° to 60 ° preferably around all straightener rolls, preferably reaches 1 ° to 35 °.(always) degree of drawing such as reaches 0.1% to 1.5%, preferably reaches 0.2% to 0.6%.Metal tape tension preferably metal tape or strip material elastic limit 10% to 90%, best 30% to 60%.
Analog computation proves: a kind of double-roller type design usually misses one's aim in stretching-bending-smoothing process, this is because the bending moment curve of vertical and horizontal as the function of metal tape curvature not as simple bending negative mirror image like that each other, but based on tension so be movable relative to each other.Therefore, in order to correct the plastic metal band curvature in machine and transverse direction produced on first roller, only there is another roller to be inadequate, because like this or only have buckling moment or only have transverse curvature moment to be balanced.Therefore, in given technological parameter situation, in order to the minimum roller number produced needed for a kind of metal tape not remaining curvature is ideally three.But calculate and prove: under adopting and being furnished with the stretching of three rollers-bending frame situation, the reaction of elimination to the fluctuation of technological parameter of the residue bending moment obtained this residue bending moment is in other words quite responsive.Same conclusion is also applicable to a kind of four-roller frame, and each roller in this frame all individually or independently of each other can not adjust with required accuracy.At this, the method that the present invention proposes provides and remedies, and according to this method, the mode that four rollers can individually and opsition dependent is controlled is independently of one another adjusted.
In addition, the present invention also advises: with regard to metal tape direct of travel, spacing between the straightener roll that at least two (directly) is arranged successively is in succession at least 15% of (maximum) metal tape width, such as being at least 30% of (maximum) metal tape width, is particularly advantageously at least 50% of (maximum) metal tape width.At this, if also there is above-mentioned distance under all four straightener roll conditions between two difference straightener roll that matingly (directly) is settled successively, then can be suitable.Therefore, the distance between two this straightener rolls such as at least can reach 150mm, preferably at least reaches 300mm.Test based on model has caused obtaining compellent result at this: the distance between the straightener roll worked by advantageously selecting elastic-plastic, just also the degree of drawing difference caused by process conditions on metal tape width can be reduced to minimum degree or be eliminated.Fact proved: larger horizontal range can play favourable effect usually.Under the condition of the given max architecture length of the frame that stretches-bend, at least one distance between the straightener roll advantageously worked by elastic-plastic is designed at least 30% of maximum metal bandwidth, but is designed at least 500mm.At this most important thing is straightener roll along the spacing of metal tape direct of travel, in its stretching at a kind of horizontal structure-bending-smoothing frame, correspond to level interval.Say in principle, also can refer to the distance in incline direction or vertical direction, this is guided in which direction depending on metal tape.
With regard to the purposes of product be leveling, different straightener roll spacing is optimal, like this when these spacing design variable or adjustable, just can improve smoothing result further for waviness defect.Therefore, according to another suggestion of the present invention, with regard to independently meaning, regulation: be adjustable along the spacing of metal tape direct of travel between at least two straightener rolls or can be regulated.So optimal spacing can be that a certain metal tape is fixed in advance according to model test.
In addition, the present invention also proposes: for the rated value of the position of straightener roll and/or all utilize computation model to be determined for metal tape around the rated value holding angle of straightener roll, this computation model at least considers the stress on vertical and horizontal, process the metal tape thickness as calculating parameter, elastic modelling quantity, lateral shrinkage, the periodic intensity situation of metal tape, metal tape tension, the geometrical configuration that roller radius and metal tape are advanced around roller, for metal tape thickness and intensity rated value used, such as the rated value that limit of stretch is used is so calculated, residue lonitudinal warping and residue cupping is made to be zero or to be at least negligible.Therefore, the metal tape with minimum residue curvature is ideally produced.Certainly also have another kind of possibility, utilize a kind of computation model with standard to determine those rated values exactly, make both to obtain small or negligible residue cupping value, residue lonitudinal warping can be made again to have a value determined.It is considered herein that at this: always there is such applicable cases, although wherein must avoid completely remaining cupping, but certain residue lonitudinal warping is admissible, if this residue lonitudinal warping only exists and therefore only has a kind of symbol determined in certain certain orientation.
In addition, the present invention also proposes: after one or more straightener roll, and such as, after last straightener roll, particularly after each straightener roll, arch upward in the cross section that metal tape width is measured metal tape.Arch upward and then can input an adjusting device in measured cross section, this adjusting device so can correct according to measured value and hold angle or roller position, thus can produce and have enough little residue lonitudinal warping and the cupped metal tape of residue.
According to this, first the present invention comprises following embodiment, wherein utilizes Mathematical Modeling determine the rated value of bending radius and thus for roller position and/or the rated value for holding angle, then utilize these rated values to carry out operating equipment.Simulated test proves: also can cause obtaining excellent result even if a kind of like this processing mode has when certain fluctuation at technological parameter.Also have a kind of possibility, in the operation process of equipment or even, those rated values can be corrected in equipment running process exactly, also can correct those rated values according to the result obtained through overtesting.This correction can " off-line " be performed.As address, also have a kind of possibility, exactly can when considering measured value, carry out " online " correction in the mode controlled or regulate.This adjustment also can based on a kind of computation model, this computation model at least considers the stress on vertical and horizontal, process the geometrical configuration of advancing to the periodic intensity situation of constriction coefficient, metal tape, metal tape tension, roller radius and metal tape around roller as the metal tape thickness of calculating parameter, elastic modelling quantity, mould, and arch upward and remain cupping with the residue lonitudinal warping of metal tape or metal tape and be associated in the cross section determined.
Described computation model can based on a kind of Finite Element Method, and the method also can consider stress on metal tape width and percentage elongation.According to greatest expected or measured before smoothing metal tape unevenness, can optimum stretch degree be calculated according to Finite Element Method and/or calculate the optimum level spacing of the roller that elastic-plastic works, thus obtain least residue unevenness, refer specifically to metal tape corrugated defect and crescent shape defect here.
Theme of the present invention also relates to a kind of device, for adopt a kind of method of described type realize metal tape continuously elongated-bending-smoothing.This device has at least four bending rolls, and one is in and is alternately bent around these bending rolls within the scope of plasticity or elastic-plastic lower than the metal tape under the tension of elastic limit.In addition, this device also has at least one control and/or adjusting device.The present invention proposes: the bending radius on all four straightener rolls can regulate individually and independently of one another.The present invention also preferably proposes: four all straightener rolls are all connected with adjusting device, and can the controlled mode of opsition dependent regulate.For this reason, each single straightener roll be furnished with all respectively one or more can actuator, the preferably screw jack of accurate adjustment.The diameter of four one or more or preferably all straightener rolls is such as 15mm to 150mm, is preferably 25mm to 80mm.As addressed, the comparatively Large space between each straightener roll is especially preferably utilized to carry out work.Particularly advantageously so design this device, make these spacing be adjustable, its mode such as: variable adjustment can be carried out along metal tape direct of travel in the position of at least one straightener roll.
To another requirement of smoothing process be: except without except residue curvature, also metal tape corrugated defect/metal tape crescent shape defect is minimized.Must eliminate and just be present in corrugated defect on metal tape before smoothing, smoothing processing procedure itself also must not produce new corrugated defect.Carrying out stretching-bend-process of smoothing in there will be such problem: the metal tape abutted on roller can be out of shape elastic-plastic, and thus can plastically extend.Along with the plasticity longitudinal tensile strain of metal tape, a kind of plasticity of metal tape width is also just caused to reduce.In other words, metal tape section before roller is directly occupy compared with wider than the metal tape section directly occupy after roller.But because metal tape can not once change its width suddenly, thus form shear stress in metal tape plane, this shear stress is all Protean on metal tape width and metal tape length.These shear stress cause again the metal tape distortion producing a kind of plasticity uneven generally on metal tape width, thus cause the different plasticity extend longitudinally on metal tape width, and thus result through the corrugated defect of smoothing caused by processing procedure.This kind of corrugated defect is all medium corrugated defect usually, strengthens along with the increase of degree of drawing.Test based on model has caused obtaining unexpected result at this: these because the degree of drawing difference caused by process conditions is by advantageously selecting the spacing between the roller that works of elastic-plastic, can be reduced to minimum level or can be eliminated in metal tape width.Already proved: general larger horizontal range can play a part favourable.Depending on the purposes of product be leveling, each different spacing is optimal, if thus have at least a straightener roll to design can carry out Level tune, then can improve smoothing result further for corrugated defect.
Under the condition of the large level interval of the straightener roll worked at elastic-plastic, the submergence depth of straightener roll given hold angle conditions under be sizable.In order to the tie point by two roll coil of strips, such as stamping connection point or soldered, usually must open stretching-bending frame, namely these rollers are removed.At this, if backhaul is very large, then this process must last very long.If continue to advance under metal tape is in one " online " situation within this time, then corollary is large around the metal tape length of the not smoothing change of tie point.This situation says it is nonconforming in principle.Therefore the present invention proposes a kind of yes-no decision: before the straightener roll that at least one elastic-plastic works, configure an adjacent guide roller and/or after it, configure an adjacent guide roller, this adjacent guide roller preferably has the diameter of the diameter being at least three times in straightener roll, particularly advantageously, preferably there is the diameter of the diameter at least decupling straightener roll.Like this, just can significantly shorten adjustment stroke, thus the metal tape section that remarkable shortening is not leveling.At this, guide roller has a large diameter like this, makes for the metal tape thickness range be leveling at least partially, only can produce a kind of simple elastic metal strip distortion.Favourable way is, latter two straightener roll does not configure centre-guide roller at least, so as adjustment kit around angle time obtain high as far as possible accuracy.
Also have a kind of possibility, in adjacent guide roller, have at least one to have a kind of recessed or convex roll profile.In addition, one in two adjacent guide rollers or also can be two adjacent guide rollers design in a horizontal direction and/or in the vertical direction in there is a kind of roller flexibility.Before the straightener roll that first elastic-plastic works, can settle one at least by 120 ° of cornerites, the idler roller of variable contour or guide roller.Take this measure just can reach following object: on the straightener roll that at least one elastic-plastic works, adjust a distribution of the tension along metal tape width determined, distribute at the degree of drawing along metal tape width so as to can so affect, make the metal tape after smoothing have residue corrugated defect little as far as possible.The raising of the tension particularly on metal strip edge can suppress moderate corrugated defect.
In addition, the straightener roll that elastic-plastic works can be supported by backing roll for resisting flexure.Such as can use the backing roll of segmentation.Like this, the straightener roll that elastic-plastic works is resist flexure to be supported by the backing roll of the backing roll of two row segmentations two intermediate calender rolls and three row's segmentations in other words.
Accompanying drawing explanation
Below with reference to only representing that the accompanying drawing of an embodiment elaborates to the present invention.
Accompanying drawing represents:
Fig. 1 the present invention propose for stretching-bend-rough schematic view of device of smoothing;
The form of implementation of the change of Fig. 2 Fig. 1 shown device;
The residue lonitudinal warping that Fig. 3 calculates a metal tape, this metal tape Fig. 1 shown device is smoothed; And
Fig. 4 remains lonitudinal warping, and this residue lonitudinal warping utilizes a kind of traditional three-roller type frame of being furnished with independent adjusting device to obtain.
Detailed description of the invention
Shown in the drawings a kind of for metal tape 1 continuously elongated-bending-device of smoothing.In embodiments, this device has four straightener rolls 2, and is in and is alternately bent within the scope of plasticity or elastic-plastic around these straightener rolls lower than the metal tape 1 under the tension of elastic limit.Each in these straightener rolls 2 is support by least two backing rolls 3 at this in a known manner.Under metal tape 1 is in the tension lower than elastic limit.In addition, be also configured with the idler roller do not illustrated in the drawings, such as, be configured with a brake roller group in entrance one end and be configured with a sliding roller group at exit end.
According to the present invention, the bending radius on all four straightener rolls can regulate 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 the controlled mode of actuator not shown in figures, such as screw jack opsition dependent to regulate, and this performs certainly on a direction V perpendicular to metal tape direct of travel R.This point is shown by the POF be represented by dotted lines of straightener roll 2 in the accompanying drawings.Each parameter and particularly roller radius and metal tape tension are so coordinated, and make metal tape (still) on all four straightener rolls not comply with roller radius.Thus by the adjustment of percentage regulation with therefore by the adjustment to position with hold angle by setting associated therewith, just can realize the change of each relevant bending radius.
In the embodiment shown in fig. 1, between four straightener rolls 2, other roller is not settled.Only before and after whole straightener roll device, settle guide roller 4.
Relatively, Fig. 2 illustrates the form of implementation that a change changes, and wherein, has settled a guide roller 4a respectively and after each straightener roll, settled a guide roller 4b before each straightener roll 2.Even if by this form of implementation, the position of four all straightener rolls 2 also can change in the mode of location-controlled perpendicular on metal tape direct of travel R.
Although say that the form of implementation shown in Fig. 1 is preferred in principle, because this form of implementation is except the roll line roller that the elasticity of arrival end and the port of export works, there is no other (pure elasticity works) roller, but the form of implementation shown in Fig. 2 also may be favourable.Also these two kinds of forms of implementation can be combined.To the guide roller that simple elasticity works, must be illustrated: these guide rollers only just to play simple elastic reaction when the metal tape of thin and/or higher-strength, in such as, aluminium strip situation within the scope of the tape thickness below a millimeter.In addition, even if they only have little elastic-plastic effect, also smoothing result may be had influence in residue curvature.If a stretching-bending-smoothing frame will cover a larger metal tape thickness range, then particularly preferably can abandon guide roller.
In order to the startup of this equipment, a kind of Mathematical Modeling must be utilized to determine the accurate nominal position of all four straightener rolls 2.At this likely, first utilize a computation model to determine specifiedly to hold angle, this computation model at least considers the stress on vertical and horizontal, is processed by the thickness of metal tape, elastic modelling quantity, transverse shrinking coefficient, periodic intensity situation, metal tape tension, roller radius and the metal tape geometrical configuration around the trend of roller as calculating parameter; To metal tape thickness and the rated value of intensity, such as, to the rated value of limit of stretch, so calculated, make residue lonitudinal warping and residue cupping be zero or almost nil.In this way can the position of fine adjustment straightener roll 2.So just experimentally result " off-line " calibration of these positions can be carried out.
At this, the fact of particular importance is: the adjustment once precisely performed just can ensure that the fluctuation of residue curvature situation for technological parameter is as being particularly extremely insensitive for the tension of metal tape and the fluctuation of intensity level and tape thickness.Because the metal tape of in fact coiled material stands certain strength fluctuation and thickness fluctuation usually, and tension can not always to keep very stable, so the residue curvature utilizing hitherto known method to obtain also just stands large fluctuation.This point is avoided in category of the present invention.The method that the present invention proposes shows that one makes us satisfied residue curvature situation especially.For this reason can with reference to the comparative observation shown in figure 3 and 4.
Fig. 3 represents a kind of function of residue lonitudinal warping k-L (by 1/m) as degree of drawing S (by %) of aluminium strip, and this aluminium strip is smoothed with a kind of device shown in Fig. 1.This relates to the value utilizing a kind of Mathematical Modeling to try to achieve.In the present embodiment, adopt there is ± metal tape the thickness of the yield point of the 250MPa of 10MPa fluctuation and the having ± 0.28mm of 0.05mm.That permission is also 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 is quite approximately within the scope of 0.31-0.59% degree of drawing.In addition, the noticeable fact is: be that residue lonitudinal warping within the scope of ± 0.05% degree of drawing only has ± 0.15m at one
-1fluctuation.Not shown residue cupping is then always less than residue lonitudinal warping.In addition, the residue lonitudinal warping within the scope of the degree of drawing that is 0.36-0.52% is limited in one to be had in the negative scope of very minor swing.By the adaptation holding angle on an in the end roller, just the residue curvature trend in curve map can be faced upward or downward passing.Therefore, positive residue lonitudinal warping can also be set.
Relatively, Fig. 4 represents the corresponding simulation of one utilizing a kind of three-roller type frame, and wherein, each roller is also the controlled mode of opsition dependent to carry out regulating.As can be seen from the figure: when degree of drawing fluctuates, remain lonitudinal warping to fluctuate in an obvious larger scope.It is in the scope of 0.33-0.36% for degree of drawing that limiting value is only maintained at one.This point in fact is such as difficult in the stage ensure with delaying at boost phase.
In addition, the noticeable fact is in a word: the available fewer straightener roll of the result addressed reaches, thus the present invention propose equipment generally speaking its feature be that structure is simple, manufacturing cost is worthwhile.
If the variant equipment being furnished with the straightener roll of more than four by one carries out work, then can single adjustment according to the angle that holds of its at least last four straightener rolls of the present invention, to obtain similar gratifying one residue curvature situation.By the present invention propose method, when advantageously have selected hold angle, remain cupped numerical value and will be significantly less than residue lonitudinal warping.So arch upward in the cross section that the residue lonitudinal warping of a cutting sheet metal out after smoothing is equivalent to the metal tape that records in stretching-bending-smoothing frame under metal tape tension approx.Therefore also following suggestion can be proposed: at least measure cross section at exit end and arch upward, residue lonitudinal warping is inferred from this measured value, and when there is deviation with desired value, then adjustment holds angle, thus also just adjust position, arch upward until adjust the cross section being equivalent to desired residue lonitudinal warping.
Simple method is that the roller that works of last elastic-plastic of adjustment holds angle, thus the residue curvature trend shown in Fig. 3 is faced upward or downward movement.Here a closed regulating loop can also be considered.In addition, following way also may be useful: after elastic-plastic bends each time, measuring cross section and arches upward, so as to optimizing all settings holding angle, and can utilize computation model adjustment.Configurable corresponding measurement mechanism for this reason, these measurement mechanisms and control to be connected with adjusting device.This situation is not shown in figures.Utilize a kind of limited-model of element just the theoretical optimal cross section that can such as dope after each roller arch upward.Then can so regulate each roller, make the result of measurement consistent as far as possible well with the result of calculating.Then can think, actual smoothing process only differ very little with the result of theory calculate and with to smooth result consistent well.
As addressed, the adjustment (transverse to metal tape direct of travel) of the location-controlled of straightener roll preferably utilizes a kind of can the screw jack of accurate adjustment execution.This accurate adjustment element carries out work with the governing speed of a kind of 2-3mm/ second usually.In order to the tie point (being such as stamping connection point or soldered) by two reels, advantageously open stretching-bending frame if desired, namely remove roller.If backhaul is at this moment very large, then this utilization can the process of screw jack of accurate adjustment can last very long.Therefore, by the embodiment shown in Fig. 2, be configured with the guide roller 4a ranked forefront and the guide roller 4b leant backward.So just greatly can shorten adjustment stroke.
Alternatively or addedly there is such possibility: be exactly except accurate adjustment (such as through screw jack), also can set a kind of quick adjustment.This possibility is particularly suitable for embodiment as shown in Figure 1, but is also applicable to embodiment as shown in Figure 2 in principle.So straightener roll is furnished with a rapid adjustable mechanism by way of parenthesis, that such as configuration is surged or pneumatic cylinder formula governor motion.Can advantageously for multiple straightener roll configures a common governor motion at this.Therefore, such as, press the embodiment shown in Fig. 1, preferably first straightener roll and the 3rd straightener roll are placed on a common upper frame, this framework can utilize one or more cylinder formula governor motion to regulate.Correspondingly can be placed on a underframe by second straightener roll and the 4th straightener roll, this framework can utilize one or more cylinder formula governor motion to regulate equally.Quick adjustment such as can two for open and close stretching-bending-smoothing frame terminal backstop between perform.These possibilities all do not illustrate in the drawings.
Claims (39)
1. for the method for continuously elongated-bending-smoothing metal tape, wherein, one is in and is alternately bent in plastic range around at least four straightener rolls lower than the metal tape under the tension of elastic limit or alternately bent within the scope of elastic-plastic, and meanwhile stand plastic elongation, it is characterized in that: the bending radius on all described four straightener rolls can individually and independently of one another regulate respectively, the mode that wherein all described four straightener roll opsition dependents are controlled is adjusted, to regulate bending radius.
2. by method according to claim 1, wherein, metal tape is bent around the straightener roll of more than four, it is characterized in that: the bending radius at least on four straightener rolls last with regard to metal tape direct of travel can individually and independently of one another be regulated respectively, this so realizes, and namely at least described last four straightener rolls can mode that individually opsition dependent is controlled be adjusted.
3. by method described in claim 1 or 2, it is characterized in that: the position of straightener roll can be set up by a kind of precision, this precision is ± 0.05 ° with regard to metal tape around holding with regard to angle of straightener roll.
4., by the method described in claim 1 or 2, it is characterized in that: metal tape is 0.5 °-60 ° around the angle that holds of all described four straightener rolls.
5., by the method described in claim 1 or 2, it is characterized in that: degree of drawing is 0.1% to 1.5%.
6., by the method described in claim 1 or 2, it is characterized in that: metal tape tension is 10% to 90% of the elastic limit of metal tape.
7. by method according to claim 1, it is characterized in that: the spacing with regard to metal tape direct of travel between at least two straightener rolls directly in succession arranged successively is at least 15% of metal tape width.
8. by method according to claim 1, it is characterized in that: the spacing between two straightener rolls directly in succession arranged successively is at least 150mm.
9. by the method described in claim 7 or 8, it is characterized in that: for all described four straightener rolls, described spacing is set between every two straightener rolls directly in succession arranged successively.
10. by method described in claim 1 or 2, it is characterized in that: be variable by the spacing setting on metal tape direct of travel between at least two straightener rolls.
11. by method according to claim 1, it is characterized in that: utilize a kind of computation model determine the position of straightener roll rated value and/or for the rated value that hold angle of metal tape around straightener roll, this computation model at least considers the stress on vertical and horizontal, metal tape thickness, metal tape elastic modelling quantity, transverse shrinking coefficient, periodic intensity situation, metal tape tension, roller radius and/or metal tape is processed around the geometrical configuration of the trend of roller and/or the rated value of metal tape thickness and/or the rated value of intensity as calculating parameter.
12., by the method described in claim 1 or 2, is characterized in that: arch upward in the cross section measuring metal tape after one or more straightener roll on metal tape width.
13. by method according to claim 12, it is characterized in that: when consider obtained cross section arch upward measured value realize position or hold the adjustment of angle.
14. by method according to claim 13, it is characterized in that: adjustment is based on a kind of computation model, this computation model at least considers the stress on vertical and horizontal, process metal tape thickness, the elastic modelling quantity of metal tape, transverse shrinking coefficient, the periodic intensity situation as calculating parameter, around the geometrical configuration of the trend of roller, and arch upward and to remain lonitudinal warping or metal tape with metal tape and remain cupping and be associated in the cross section determined by metal tape tension, roller radius and metal tape.
15. for the method for continuously elongated-bending-smoothing metal tape, wherein, one is in and is alternately bent in plastic range around multiple straightener roll lower than the metal tape under the tension of elastic limit or alternately bent within the scope of elastic-plastic, and meanwhile stand plastic elongation, it is characterized in that: be variable by the spacing setting on metal tape direct of travel between at least two straightener rolls.
16. by method according to claim 15, it is characterized in that: utilize a kind of computation model determine the position of straightener roll rated value and/or for the rated value that hold angle of metal tape around straightener roll, this computation model at least considers the stress on vertical and horizontal, metal tape thickness, metal tape elastic modelling quantity, transverse shrinking coefficient, periodic intensity situation, metal tape tension, roller radius and/or metal tape is processed around the geometrical configuration of the trend of roller and/or the rated value of metal tape thickness and/or the rated value of intensity as calculating parameter.
17., by method according to claim 16, is characterized in that: each rated value utilizes computation model to be determined with such standard, namely remain lonitudinal warping and remain cupping to be roughly zero.
18., by method according to claim 16, is characterized in that: each rated value utilizes computation model to be determined with such standard, namely remain cupping and are roughly zero, and residue lonitudinal warping is the value determined.
19. by method according to claim 16, it is characterized in that: one or more described computation model is all based on FInite Element, wherein, with reference to greatest expected or measured before smoothing metal tape unevenness, go out optimum stretch degree according to Finite element arithmetic and/or calculated the optimum level spacing of each straightener roll of elasticity/plasticity effect, described optimum stretch degree and/or optimum level spacing cause least residue unevenness.
20. for carrying out the device of continuously elongated-bending-smoothing metal tape (1) by the method according to any one of claim 1 to 19, this device comprises at least four straightener rolls (2), one is in and is alternately bent in plastic range around these straightener rolls lower than the metal tape (1) under the tension of elastic limit or alternately bent within the scope of elastic-plastic, and this device comprises at least one to be controlled and/or adjusting device, it is characterized in that: the bending radius on all described four straightener rolls (2) can respectively individually with carry out independently of one another regulating and for this reason all described four straightener rolls (2) are all connected with an adjusting device and can the controlled mode of opsition dependent regulate.
21., by device according to claim 20, is characterized in that: the diameter of one or more straightener roll (2) is 15mm-150mm.
22., by the device described in claim 20 or 21, is characterized in that: latter two straightener roll (2) at least in described four straightener rolls (2) is directly arranged successively in succession, does not arrange other roller between which.
23., by device according to claim 22, is characterized in that: described four straightener rolls (2) are all directly successively settled, and do not arrange other roller between which.
24., by device according to claim 23, 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 device according to claim 20, it is characterized in that: at least before a straightener roll (2) and/or settled an adjacent guide roller (4,4a, 4b) below.
26., by device according to claim 20, is characterized in that: before first straightener roll (2), arrange an idler roller or guide roller.
27., by device according to claim 20, is characterized in that: straightener roll (2) can adjust by means of actuator.
28., by device according to claim 20, is characterized in that: the straightener roll (2) that each position is adjustable or multiple straightener roll (2) distinguishing adjusting position are also jointly incidentally provided with a fast adjuster.
29. for carrying out the device of continuously elongated-bending-smoothing metal tape by the method according to any one of claim 1 to 19, this device comprises multiple straightener roll (2), one is in and is alternately bent in plastic range around these straightener rolls lower than the metal tape (1) under the tension of elastic limit or alternately bent within the scope of elastic-plastic, 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).
30., by device according to claim 29, is characterized in that: the position of at least one straightener roll (2) can be conditioned along metal tape direct of travel (R).
31. by device according to claim 29, it is characterized in that: at least before a straightener roll (2) and/or settled an adjacent guide roller (4,4a, 4b) below.
32., by device according to claim 31, is characterized in that: the diameter that this guide roller or these guide rollers (4,4a, 4b) have is at least three times of the diameter of straightener roll.
33., by device according to claim 31, is characterized in that: preposition guide roller (4,4a) and/or rearmounted guide roller (4,4b) have recessed or convex roll profile.
34. by device according to claim 31, it is characterized in that: preposition guide roller (4,4a) and/or rearmounted guide roller (4,4b) be furnished with along horizontal direction and/or roller turning mechanism vertically.
35., by device according to claim 29, is characterized in that: before first straightener roll (2), arrange an idler roller or guide roller.
36., by device according to claim 35, is characterized in that: described idler roller or guide roller are held with the angle of at least 120 ° by metal tape.
37., by device according to claim 29, is characterized in that: straightener roll (2) can adjust by means of actuator.
38., by device according to claim 37, is characterized in that: actuator is screw jack.
39., by device according to claim 29, is characterized in that: the straightener roll (2) that each position is adjustable or multiple straightener roll (2) distinguishing adjusting position are also jointly incidentally provided with a fast adjuster.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009041852.0 | 2009-09-18 | ||
| DE102009041852A DE102009041852A1 (en) | 2009-09-18 | 2009-09-18 | Method and apparatus for continuous stretch bending of metal strips |
| 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 CN102548681A (en) | 2012-07-04 |
| CN102548681B true CN102548681B (en) | 2015-11-25 |
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|---|---|---|---|
| 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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| WO2013160566A1 (en) | 2012-04-25 | 2013-10-31 | Arcelormittal Investigacion Y Desarrollo, S.L. | Method for producing a metal sheet having oiled zn-al-mg coatings, and corresponding metal sheet |
| DE102012020444B4 (en) * | 2012-10-18 | 2015-01-22 | Vdeh-Betriebsforschungsinstitut Gmbh | Method for determining the tensile strength of a strip in a straightening machine and tensile softness sensor |
| DE102013106243C5 (en) * | 2013-06-14 | 2018-10-04 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method and device for stretch bending of metal strips |
| CN103316964A (en) * | 2013-06-26 | 2013-09-25 | 江苏亨特宏业重工有限公司 | Stretch bending straightening unit control system of aluminum tape processing equipment |
| EP3168570A1 (en) * | 2015-11-10 | 2017-05-17 | Primetals Technologies France SAS | Method and device for measuring the planarity of a metal product |
| WO2017100264A1 (en) | 2015-12-08 | 2017-06-15 | The American University In Cairo | Shear enhanced rolling (ser). a method to improve grain size uniformity in rolled alloy billets. |
| DE102016106208A1 (en) | 2016-04-05 | 2017-10-05 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method for stretch bending of a strip |
| CN105880315A (en) * | 2016-06-14 | 2016-08-24 | 佛山市荣星数控设备制造有限公司 | Circuit structure for withdrawal and straightening machine |
| DE102016121448B4 (en) * | 2016-11-09 | 2018-08-30 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method and device for stretch bending of a metal strip |
| EP3437749A1 (en) * | 2017-08-04 | 2019-02-06 | Primetals Technologies France SAS | Multi-roller flattener of a metal strip |
| CN109513795B (en) * | 2018-12-29 | 2024-03-15 | 西南铝业（集团）有限责任公司 | Ultra-large-size section bar stretching and straightening equipment for spaceflight and filling piece |
| CN109991163B (en) * | 2019-04-22 | 2021-12-21 | 湖南继兴科技有限公司 | Adhesive detection equipment |
| USD1001927S1 (en) | 2020-04-21 | 2023-10-17 | Ekaterina Dominguez | Set of resistance bands with handles |
| US20240001422A1 (en) * | 2020-12-01 | 2024-01-04 | Magna International Inc. | Wave roll die assembly |
| 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 |
| 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 |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2011032890A1 (en) | 2011-03-24 |
| CN102548681A (en) | 2012-07-04 |
| KR101651313B1 (en) | 2016-08-25 |
| DE102009041852A1 (en) | 2011-04-07 |
| EP2477764B1 (en) | 2016-04-20 |
| EP2477764A1 (en) | 2012-07-25 |
| RU2012115467A (en) | 2013-10-27 |
| US20120174643A1 (en) | 2012-07-12 |
| ES2574616T3 (en) | 2016-06-21 |
| KR20120069692A (en) | 2012-06-28 |
| RU2540286C2 (en) | 2015-02-10 |
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