CN103240299A - Roller leveler and method for correcting sheet material - Google Patents

Roller leveler and method for correcting sheet material Download PDF

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Publication number
CN103240299A
CN103240299A CN2013100496661A CN201310049666A CN103240299A CN 103240299 A CN103240299 A CN 103240299A CN 2013100496661 A CN2013100496661 A CN 2013100496661A CN 201310049666 A CN201310049666 A CN 201310049666A CN 103240299 A CN103240299 A CN 103240299A
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China
Prior art keywords
sheet material
leveling roller
pressed
engaging
amount
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CN2013100496661A
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Chinese (zh)
Inventor
阿部敬三
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JP Steel Plantech Co
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JP Steel Plantech Co
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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
    • 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
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
    • 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
    • B21D1/06—Removing local distortions

Abstract

The invention provides a roller leveler and a method for correcting sheet material. This roller leveler (100) for correcting a sheet material (S) is equipped with: a leveling roll unit (20) having a plurality of leveling rolls (6, 8) that rotate so as to thread the sheet material through while also taking in and pressing on the sheet material (S); pressure cylinders (4a, 4b) for pressing on the sheet material (S) via the leveling rolls (6, 8) at an entry-side and exit-side of the leveling roll unit (20); and a driving mechanism (15) for rotating the leveling rolls (6, 8) to thread the sheet material (S) through. The diameter (D) of the plurality of leveling rolls (6, 8) is given a value satisfying 0.5 < D/P < 0.9 in relation to a between-roll pitch (P) of the leveling rolls (6, 8), determined by the maximum required yield stress and maximum required sheet thickness for a sheet material that must be corrected.

Description

The antidote of roll leveller and sheet material
Technical field
The present invention relates to for correcting the metallic plate for example roll leveller of sheet material such as steel plate and the antidote of sheet material.
Background technology
In the process of making sheet materials such as steel plate, though implement operations such as rolling, cooling, in above-mentioned operation, produce the distortion of warpage, waveform shape at sheet material.Therefore, for the distortion of correcting this type of warpage, waveform shape to realize the planarization of sheet material, and use many leveling rollers are configured to staggered roll leveller (for example patent documentation 1) up and down.
Roll leveller is to go into a plurality of states of going up the leveling rollers or to go up the leveling roll-ins and go into a plurality of states of leveling roller down and make the sheet material that should correct current with respect to a plurality of with respect to a plurality of down leveling roll-ins, and sheet material applied bending repeatedly, and make warpage, the planarization of waveform shape of sheet material.
For above-mentioned roll leveller, require yield stress and the maximum of this moment to require thickness of slab to determine spacing between the roller of leveling roller according to the maximum of the sheet material that will correct, and determine maximum corrective force (pressing force), peak torque according to spacing between determined roller.In the past, from guarantee the viewpoint of enough road abilities and enough transmission moment of torsion with respect to spacing between the roller of such decision, set the diameter of leveling roller as wide as possible, made it at more than 0.9 times and less than 1.0 times of spacing between roller.In addition, maximum requires yield stress and the maximum thickness of slab that requires to represent by the user as the maximum of the desired yield stress of specification of sheet material and the maximum of thickness of slab, but in the following description, uses above-mentioned term to simplify.In addition, in each embodiment of " specific embodiment ", be described in detail the reason that yield stress and thickness of slab according to the sheet material that will correct determine spacing between roller.
Patent documentation 1: TOHKEMY 2009-255148 communique
In recent years, the demand that the contrast sheet material that thin and yield stress was big is in the past aligned rectification is increasing, and under these circumstances, needs to increase the amount of being pressed into of leveling roller, but in the big roll leveller in the past in roller as described above footpath, can't obtain enough amounts of being pressed into sometimes.Therefore, need a kind of roll leveller that also can correct fully for sheet material thin and that yield stress is big.
Summary of the invention
The present invention In view of the foregoing finishes, even if the metallic plate that its purpose is to provide thin and yield stress is big for example sheet material such as steel plate also can align the roll leveller of rectification and the antidote of sheet material.
In order to solve above-mentioned problem, in first viewpoint of the present invention, provide a kind of roll leveller, this roll leveller is the roll leveller of sheet material being corrected by logical printed line, it is characterized in that, possess: the leveling roller unit, this leveling roller unit has a plurality of leveling rollers, these a plurality of leveling rollers be staggered be disposed at above-mentioned logical printed line about, Yi Bian correct with the above-mentioned sheet material of one side clamping the current mode of above-mentioned sheet material is rotated; Press cylinder pressure, should be arranged at input side and the outlet side of the above-mentioned sheet material in the above-mentioned leveling roller unit by cylinder pressure respectively, press above-mentioned sheet material via above-mentioned leveling roller; A plurality of backing rolls, these a plurality of backing rolls support above-mentioned leveling roller; And driving mechanism, this driving mechanism makes above-mentioned leveling roller rotate to make above-mentioned sheet material current, the diameter D of above-mentioned a plurality of leveling rollers is made as, require between yield stress and the maximum roller that requires the above-mentioned leveling roller that thickness of slab determines to satisfy the value of 0.5＜D/P＜0.9 for the spacing P with respect to the maximum by above-mentioned sheet material.
In above-mentioned first viewpoint, roll leveller also possesses control device, this control device so that the mode between the roller of leveling up and down of the engaging-in above-mentioned leveling roller unit of above-mentioned sheet material the above-mentioned amount of being pressed into that is pressed into above-mentioned sheet material by cylinder pressure is controlled, above-mentioned control device comprises engaging-in correction card, and this engaging-in correction card is according to the thickness setting of above-mentioned sheet material: the amount of being pressed into of the limit between the roller of leveling up and down of the engaging-in above-mentioned leveling roller unit of above-mentioned sheet material that is the engaging-in limit amount of being pressed into; Displacement that is engaging-in Correction and Control distance with the front end of the above-mentioned sheet material that should be controlled to the above-mentioned engaging-in limit amount of being pressed into, above-mentioned control device is controlled in such a way: above-mentioned input side by cylinder pressure above-mentioned sheet material is carried out the setting amount of being pressed into that house of correction needs than the big situation of the above-mentioned engaging-in limit amount of being pressed under, based on above-mentioned engaging-in correction card, the amount of being pressed into by cylinder pressure with above-mentioned input side before the front end of above-mentioned sheet material arrives above-mentioned engaging-in Correction and Control distance is constrained to the above-mentioned engaging-in limit amount of being pressed into, and the front end of above-mentioned sheet material arrived above-mentioned engaging-in Correction and Control apart from the time make the amount of being pressed into by cylinder pressure of above-mentioned input side become the above-mentioned setting amount of being pressed into.In this case, in above-mentioned engaging-in correction card, also be set with front end at above-mentioned sheet material arrived above-mentioned engaging-in Correction and Control apart from the time the speed of the pressing when amount of being pressed into by cylinder pressure of above-mentioned input side is made as the above-mentioned setting amount of being pressed into, based on above-mentioned engaging-in correction card, to above-mentioned input side be altered to the above-mentioned setting amount of being pressed into by the amount of being pressed into of cylinder pressure from the above-mentioned engaging-in limit amount of being pressed into the time the speed of pressing control.
In second viewpoint of the present invention, a kind of roll leveller is provided, this roll leveller is the roll leveller of sheet material being corrected by logical printed line, it is characterized in that, possess: the leveling roller unit, this leveling roller unit has a plurality of leveling rollers, these a plurality of leveling rollers be staggered be disposed at above-mentioned logical printed line about, Yi Bian correct with the above-mentioned sheet material of one side clamping the current mode of above-mentioned sheet material is rotated; A plurality of backing rolls, the above-mentioned a plurality of leveling rollers of lower support on these a plurality of backing rolls; The pair of rolls framework, the above-mentioned leveling roller of this pair of rolls framework lower support on above-mentioned leveling roller and above-mentioned backing roll and above-mentioned backing roll; Pair of frames, the above-mentioned pair of rolls framework of lower support on this a pair of framework; Press cylinder pressure, should be arranged at input side and the outlet side of the above-mentioned sheet material in the above-mentioned leveling roller unit by cylinder pressure respectively, press the side in the above-mentioned pair of frames that is the framework that moves to above-mentioned logical printed line, thereby above-mentioned sheet material is pressed between above-mentioned leveling roller via a side of the correspondence in the above-mentioned roller framework; Driving mechanism, this driving mechanism make above-mentioned leveling roller rotation; The protruding cylinder of fluid pressure type drum, the protruding cylinder of this fluid pressure type drum are equipped with a plurality of along the width with the current direction quadrature of above-mentioned sheet material between the above-mentioned corresponding side in above-mentioned action framework and the above-mentioned roller framework; And control device, this control device is controlled the rectification of above-mentioned sheet material, the diameter D of above-mentioned a plurality of leveling rollers is made as, require between yield stress and the maximum roller that requires the above-mentioned leveling roller that thickness of slab determines for the spacing P with respect to the maximum by above-mentioned sheet material, satisfy the value of 0.5＜D/P＜0.9, above-mentioned control device is controlled above-mentioned pressing quantity by cylinder pressure on one side and is utilized above-mentioned driving mechanism to make above-mentioned sheet material current between above-mentioned leveling roller on one side, and, above-mentioned control device is tried to achieve the transverse curvature amount on the width of above-mentioned pair of frames, calculate the required amount of restriction that is used for eliminating the required protruding cylinder of each above-mentioned fluid pressure type drum of this amount of bow, and based on above-mentioned required amount of restriction the protruding cylinder of each above-mentioned fluid pressure type drum is carried out throttling control.
In above-mentioned second viewpoint, above-mentioned control device can be based on above-mentioned compression information of pressing cylinder pressure, the protruding cylinder of above-mentioned fluid pressure type drum, above-mentioned pair of rolls framework, above-mentioned backing roll, above-mentioned leveling roller, calculate the required amount of restriction that is used for eliminating the required protruding cylinder of each above-mentioned fluid pressure type drum of this compression, and based on this required amount of restriction be used for to eliminate the aggregate value of the required required amount of restriction of the amount of bow of above-mentioned pair of frames, come the protruding cylinder of each above-mentioned fluid pressure type drum is carried out throttling control.
In addition, in above-mentioned second viewpoint, above-mentioned control device comprises engaging-in correction card, and this engaging-in correction card is according to the thickness setting of above-mentioned sheet material: the amount of being pressed into of the limit between the roller of leveling up and down of the engaging-in above-mentioned leveling roller unit of above-mentioned sheet material that is the engaging-in limit amount of being pressed into; Displacement that is engaging-in Correction and Control distance with the front end of the above-mentioned sheet material that should be controlled to the above-mentioned engaging-in limit amount of being pressed into, above-mentioned control device is controlled in such a way: above-mentioned input side by cylinder pressure above-mentioned sheet material is carried out the setting amount of being pressed into that house of correction needs than the big situation of the above-mentioned engaging-in limit amount of being pressed under, based on above-mentioned engaging-in correction card, the amount of being pressed into by cylinder pressure with above-mentioned input side before the front end of above-mentioned sheet material arrives above-mentioned engaging-in Correction and Control distance is constrained to the above-mentioned engaging-in limit amount of being pressed into, and the front end of above-mentioned sheet material arrived above-mentioned engaging-in Correction and Control apart from the time make the amount of being pressed into by cylinder pressure of above-mentioned input side become the above-mentioned setting amount of being pressed into.In this case, in above-mentioned engaging-in correction card, also be set with front end at above-mentioned sheet material arrived above-mentioned engaging-in Correction and Control apart from the time the speed of the pressing when amount of being pressed into by cylinder pressure of above-mentioned input side is made as the above-mentioned setting amount of being pressed into, above-mentioned control device is based on above-mentioned engaging-in correction card, to above-mentioned input side be altered to the above-mentioned setting amount of being pressed into by the amount of being pressed into of cylinder pressure from the above-mentioned engaging-in limit amount of being pressed into the time the speed of pressing control.
In above-mentioned first and second viewpoint, above-mentioned diameter D and above-mentioned spacing P preferably satisfy 0.55＜D/P＜0.8.
In addition, be preferably, above-mentioned driving mechanism has last leveling roller drive division and following leveling roller drive division, last leveling roller drive division is by being used for making the above-mentioned last leveling roller CD-ROM drive motor that the leveling roller drives of going up, with constitute for the last leveling roller of above-mentioned last leveling roller with power transfering part with the transmission of power of CD-ROM drive motor on the above-mentioned leveling roller of going up, following leveling roller drive division is by the following leveling roller CD-ROM drive motor that is used for above-mentioned leveling roller is down driven, with constitute for the above-mentioned following leveling roller of leveling roller down with power transfering part with the transmission of power of CD-ROM drive motor on above-mentioned down leveling roller, above-mentioned go up the leveling roller with power transfering part and above-mentioned under the leveling roller dispose in mutual hands-off mode with power transfering part.
In the 3rd viewpoint of the present invention, a kind of antidote of sheet material is provided, the antidote of this sheet material is to utilize the roll leveller of sheet material being corrected by logical printed line to come the antidote of sheet material that above-mentioned sheet material is corrected, above-mentioned roll leveller possesses: the leveling roller unit, this leveling roller unit has a plurality of leveling rollers, these a plurality of leveling rollers be staggered be disposed at above-mentioned logical printed line about, Yi Bian correct with the above-mentioned sheet material of one side clamping the current mode of above-mentioned sheet material is rotated; Press cylinder pressure, should be arranged at input side and the outlet side of the above-mentioned sheet material in the above-mentioned leveling roller unit by cylinder pressure respectively, press above-mentioned sheet material via above-mentioned leveling roller; A plurality of backing rolls, these a plurality of backing rolls support above-mentioned leveling roller; And driving mechanism, this driving mechanism makes above-mentioned leveling roller rotate to make above-mentioned sheet material current, the antidote of sheet material is characterised in that, require yield stress and maximumly require spacing P between roller that thickness of slab determines above-mentioned a plurality of leveling rollers according to the maximum of the above-mentioned sheet material that should correct, and with the value that the roller footpath D of above-mentioned leveling roller is made as satisfied 0.5＜D/P＜0.9, come above-mentioned sheet material is corrected.
In the 4th viewpoint of the present invention, a kind of antidote of sheet material is provided, the antidote of this sheet material is to utilize the roll leveller of sheet material being corrected by logical printed line to come the antidote of sheet material that above-mentioned sheet material is corrected, above-mentioned roll leveller possesses: the leveling roller unit, this leveling roller unit has a plurality of leveling rollers, these a plurality of leveling rollers be staggered be disposed at above-mentioned logical printed line about, Yi Bian correct with the above-mentioned sheet material of one side clamping the current mode of above-mentioned sheet material is rotated; A plurality of backing rolls, the above-mentioned a plurality of leveling rollers of lower support on these a plurality of backing rolls; The pair of rolls framework, this pair of rolls framework supports above-mentioned leveling roller and above-mentioned backing roll up and down above-mentioned leveling roller and above-mentioned backing roll; Pair of frames, the above-mentioned pair of rolls framework of lower support on this a pair of framework; Press cylinder pressure, should be arranged at input side and the outlet side of the above-mentioned sheet material in the above-mentioned leveling roller unit by cylinder pressure respectively, press the side in the above-mentioned pair of frames that is the framework that moves to above-mentioned logical printed line, thereby above-mentioned sheet material is pressed between above-mentioned leveling roller via a side of the correspondence in the above-mentioned roller framework; Driving mechanism, this driving mechanism make above-mentioned leveling roller rotation; And the protruding cylinder of fluid pressure type drum, the protruding cylinder of this fluid pressure type drum is between the above-mentioned corresponding side in above-mentioned action framework and the above-mentioned roller framework, be equipped with a plurality of along the width with the current direction quadrature of above-mentioned sheet material, the antidote of sheet material is characterised in that, require yield stress and maximumly require spacing P between roller that thickness of slab determines above-mentioned a plurality of leveling rollers according to the maximum of the above-mentioned sheet material that should correct, and the roller of above-mentioned leveling roller footpath D is made as the value that satisfies 0.5＜D/P＜0.9, and try to achieve the transverse curvature amount on the width of above-mentioned pair of frames, calculate the required amount of restriction that is used for eliminating the required protruding cylinder of each above-mentioned fluid pressure type drum of this amount of bow, and based on above-mentioned required amount of restriction the protruding cylinder of each above-mentioned fluid pressure type drum is carried out throttling control.
On above-mentioned the 4th viewpoint, based on above-mentioned compression information of pressing cylinder pressure, the protruding cylinder of above-mentioned fluid pressure type drum, above-mentioned pair of rolls framework, above-mentioned backing roll, above-mentioned leveling roller, calculate the required amount of restriction that is used for eliminating the required protruding cylinder of each above-mentioned fluid pressure type drum of this compression, and based on this required amount of restriction be used for to eliminate the aggregate value of the required required amount of restriction of the amount of bow of above-mentioned pair of frames, come the protruding cylinder of each above-mentioned fluid pressure type drum is carried out throttling control.
In the above-mentioned the 3rd and the 4th viewpoint, based on according to the thickness setting of above-mentioned sheet material the engaging-in correction card of the engaging-in limit amount of being pressed into and engaging-in Correction and Control distance, above-mentioned input side by cylinder pressure above-mentioned sheet material is revised the required setting amount of being pressed into than the big situation of the above-mentioned engaging-in limit amount of being pressed under, the amount of being pressed into by cylinder pressure with above-mentioned input side before the front end of above-mentioned sheet material arrives above-mentioned engaging-in Correction and Control distance is constrained to the above-mentioned engaging-in limit amount of being pressed into, the front end of above-mentioned sheet material arrived above-mentioned engaging-in Correction and Control apart from the time make the amount of being pressed into by cylinder pressure of above-mentioned input side become the above-mentioned setting amount of being pressed into, the amount of being pressed into of the limit between the roller of leveling up and down that the above-mentioned engaging-in limit amount of being pressed into is the engaging-in above-mentioned leveling roller unit of above-mentioned sheet material, above-mentioned engaging-in Correction and Control distance is the displacement of the front end of the above-mentioned sheet material that should be controlled to the above-mentioned engaging-in limit amount of being pressed into.In this case, be preferably, in above-mentioned engaging-in correction card, also be set with front end at above-mentioned sheet material arrived above-mentioned engaging-in Correction and Control apart from the time the speed of the pressing when amount of being pressed into by cylinder pressure of above-mentioned input side is made as the above-mentioned setting amount of being pressed into, based on above-mentioned engaging-in correction card, to above-mentioned input side be altered to the above-mentioned setting amount of being pressed into by the amount of being pressed into of cylinder pressure from the above-mentioned engaging-in limit amount of being pressed into the time the speed of pressing control.
According to the present invention, the diameter D of a plurality of leveling rollers is made as with respect to the maximum by the sheet material that should correct requires yield stress and the maximum of this moment to require to satisfy for the spacing P between the roller of the leveling roller that thickness of slab determines the value of 0.5＜D/P＜0.9, therefore can apply strong bending to sheet material by the increase amount of being pressed into.Even if therefore sheet material thin and that yield stress is big also can be aligned rectification, thereby can form high flat degree.
Description of drawings
Fig. 1 is the side view of the related roll leveller of expression an embodiment of the invention.
Fig. 2 is the front view of the related roll leveller of expression an embodiment of the invention.
Fig. 3 is the figure that describes for the relation to spacing and roller footpath between the roller of the related roll leveller of an embodiment of the invention.
Fig. 4 is the figure that describes for the driving mechanism to the related roll leveller of an embodiment of the invention.
Fig. 5 is the cutaway view that describes for the structure to the protruding cylinder of the fluid pressure type of the related roll leveller of an embodiment of the invention drum.
Fig. 6 is the block diagram of the control device of the related roll leveller of expression an embodiment of the invention.
Fig. 7 is the figure that expression is input to the engaging-in correction card in the control device of the related roll leveller of an embodiment of the invention.
Fig. 8 be expression to get thickness of slab be transverse axis, getting yield stress is the longitudinal axis, makes the situation of D/P=0.923 and makes under the situation of D/P=0.667, yield rate is 70%(0.7) time the figure in rectifiable zone.
Fig. 9 is the figure of the control of the amount of being pressed into when representing engaging-in the correction.
Figure 10 is after being illustrated in engaging-in correction end, is adjusted to the figure of the state when setting the amount of being pressed into.
Symbol description:
1 ... shell; 2 ... upper frame (action framework); 3 ... underframe; 4a, 4b ... pushing cylinder (pressing cylinder pressure); 5 ... the top roll framework; 6 ... last leveling roller; 6a, 8a ... the ledge of axle; 7 ... top backing up roll; 8 ... following leveling roller; 9 ... the lower support roller; 10 ... the lower roll framework; 12 ... the protruding cylinder of fluid pressure type drum; 15 ... driving mechanism; 21,22 ... the curved detection sensor; 30 ... last leveling roller drive division; 31,41 ... universal-joint spindle (Universal spindle); 32,42 ... CD-ROM drive motor; 33,34,43,44 ... the cross pin unit; 35,45 ... jackshaft; 60 ... control device; 64 ... the protruding controller of drum; 66 ... press down engaging-in controller; 100 ... roll leveller; S ... sheet material (being corrected material).
The specific embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.
Fig. 1 is the side view of the related roll leveller of expression an embodiment of the invention, and Fig. 2 is its front view.The roll leveller 100 of present embodiment has: shell 1, the upper frame 2 of inboard that is arranged at shell 1 and the underframe 3 that arranges in the mode of supporting shell 1.Below upper frame 2, utilize top roll clamping cylinder (not shown) suspention top roll framework 5.On the other hand, underframe 3 is provided with lower roll framework 10.In addition, as described later, therefore upper frame 2 can be referred to as the action framework because the cylinder (being also referred to as pushing cylinder) that is pressed is pressed and knee-action.The action framework is not limited to upper frame 2, also underframe 3 can be configured to as operation frame, and utilize be arranged at its below make underframe 3 knee-actions by pressing of cylinder pressure.
Between top roll framework 5 and lower roll framework 10, be provided with leveling roller unit 20, this leveling roller unit 20 has a plurality of leveling rollers 6 and a plurality of leveling rollers 8 down gone up, they with metallic plate such as steel plate that is sheet material S pass through circuit (logical printed line) be formed at a plurality of go up leveling rollers 6 and a plurality of under mode between the leveling roller 8 be configured to staggered up and down.In the leveling roller unit 20, by 5 supportings of top roll framework, following leveling roller 8 is supported by lower roll framework 10 above lower roll framework 10 last leveling roller 6 below top roll framework 5.Throughput direction upstream side and downstream at the sheet material S of leveling roller unit 20 are provided with the deflector roll 14 for guiding sheet metal S.Last leveling roller 6 and down leveling roller 8 rotate owing to driving mechanism 15, thereby can make arrow A direction and the direction in arrow B direction of sheet material S in Fig. 1 for example move sheet material S is corrected.
Above the last leveling roller 6 with along on leveling roller 6 axially mounting in the mode of top roll framework 5 dispose a plurality of for supporting on the little tops backing up roll 7 of size of leveling roller 6.In addition, disposing a plurality of little following leveling rollers 9 of size for leveling roller 8 under supporting with the axially mounting along following leveling roller 8 in the mode of lower roll framework 10 below the following leveling roller 8.
As mentioned above, require yield stress and maximum at that time to require thickness of slab (by the user as the maximum of the desired yield stress of the specification of sheet material and the maximum of thickness of slab) to determine spacing between leveling roller 6 up and down, each roller of 8 according to the maximum of the sheet material S that will correct.This is owing to according to by the desired thickness of slab of user, yield stress, calculate the desired rectification reaction force of roll leveller by following formula (1).
F=2×（3-（1-η） 2）×（W×σy×T 2）/（3000×L）×α…（1）
Herein, F is for correcting reaction force, and η is yield rate, and W is plate wide (mm), and σ y is yield stress (kgf/mm 2), T is thickness of slab (mm), and L is spacing between roller (mm), and α is the actual measurement coefficient.
In other words, correct reaction force and be directly proportional with yield stress σ y, with square being directly proportional of thickness of slab T, and and roller between spacing L be inversely proportional to.If above-mentioned formula (1) is simplified, then can be utilized formula (2) F=K 1* T 2* σ y/L represents (K 1Be coefficient).
On the other hand, the diameter of backing roll (with backing roll 7 up and down, 9 corresponding) that is disposed at the outside of leveling roller is more big, and the rectification reaction force that obtains by roll leveller is more big so.But spacing L is almost identical between backing roll 7,9 maximum gauge and roller, and reason is that backing roll can not have than the big diameter of spacing L between roller.Therefore, can utilize formula (3) F=K 2* L represents the maximum (K of the rectification reaction force that obtains by roll leveller 2Be coefficient).
Therefore, if formula (2), (3) are merged then K 2* L=K 1* T 2* σ y/L, thus derive following formula (4).Formula (4) expression decides spacing L between leveling roller 6 up and down, each roller of 8 according to the yield stress σ y of the sheet material S that will correct and thickness of slab T.
L=[（K 1×T 2×σy）/K 2] 1/2·（4）
In the past, from guaranteeing the viewpoint of enough road abilities and enough transmission moment of torsion with respect to spacing between the roller of such decision, the diameter of leveling roller was set at big as far as possible, made it at more than 0.9 times and less than 1.0 times of spacing between roller.
Relative therewith, in the related leveling roller unit 20 of embodiments of the present invention, as shown in Figure 3, being equivalent to the spacing L of formula (4) with spacing P(between leveling roller 6 up and down, each roller of 8) mode that satisfies the relation of 0.5＜D/P＜0.9 with roller footpath D is configured.That is, compare with the situation of in the past 0.9≤D/P＜1.0, D is little in the roller footpath.The value of D/P is the scope of preferred 0.55＜D/P＜0.8 in the above range, the scope of preferred especially 0.6＜D/P＜0.7.
Two ends on sheet material S throughput direction between shell 1 and the upper frame 2, leveling roller unit 20 dispose respectively sheet material S are applied pushing cylinder (being also referred to as by cylinder pressure) 4a and 4b for the downforce (being also referred to as pressing force) of correcting.Pushing cylinder 4a and the 4b both end sides (transmission side and process side) on the width of sheet material S is respectively equipped with two (with reference to Fig. 2.But, in Fig. 2, only illustrate pushing cylinder 4a).
In addition, in this manual, the situation of exerting pressure as shown in Figure 1 not only represented downwards in " pressing down " word, after also comprising as the illustrated situation of upwards exerting pressure like that of variation.In other words, in this manual, " pressing down " word can exchange with " pressing " word.
Pushing cylinder 4a and 4b press down via top roll framework 5, top backing up roll 7 and last 6 couples of sheet material S of leveling roller being fixedly set in the following leveling roller 8 of lower roll framework 10.
Last leveling roller 6 and following leveling roller 8 rotate by driving mechanism 15.In Fig. 1, for convenience of description, with leveling roller 6 up and down, 8 respectively be listed as the whole ways of connecting driving mechanism 15 that drawn, but in fact, as described later, driving mechanism 15 drive separately respectively go up leveling roller 6 and down leveling roller 8 make it rotation.And, Yi Bian utilize driving mechanism 15 to make sheet material S current between last leveling roller 6 and following leveling roller 8, Yi Bian utilize pushing cylinder 4a, 4b to press down to align rectification sheet material S via 6 couples of sheet material S of last leveling roller.
Carry under the situation of sheet material S in the A direction to Fig. 1, pushing cylinder 4a plays a role as the pushing cylinder of input side, and pushing cylinder 4b plays a role as the pushing cylinder of outlet side.In addition, carrying under the situation of sheet material S to the B direction, pushing cylinder 4b plays a role as the pushing cylinder of input side, and pushing cylinder 4a plays a role as the pushing cylinder of outlet side.In addition, also can be set to fix with going up leveling roller 6, and utilize and depress leveling roller 8 under the pushing cylinder.
As shown in Figure 4, driving mechanism 15 has last leveling roller drive division 30 and following leveling roller drive division 40, wherein, last leveling roller drive division 30 by is connected with the ledge 6a of the axle of last leveling roller 6, constitute as universal-joint spindle 31 and the CD-ROM drive motor 32 of power transfering part, following leveling roller drive division 40 by with following leveling roller 8 spool ledge 8a be connected, constitute as universal-joint spindle 41 and the CD-ROM drive motor 42 of power transfering part.Universal-joint spindle 31, the 41st, for transmission of power to axle and the parts of the inconsistent part of driving side, universal-joint spindle 31 has a pair of cross pin unit 33,34 and is arranged on jackshaft 35 between them, and universal-joint spindle 41 has a pair of cross pin unit 43,44 and is arranged on jackshaft 45 between them.In addition, utilize axle 32a to link the axle of motor 32 and the cross pin unit 34 of motor 32 sides, and utilize axle 42a to link the axle of motor 42 and the cross pin unit 44 of motor 42 sides.
As mentioned above, the diameter D of last leveling roller 6 and following leveling roller 8 is little, therefore from avoiding on adjacency the leveling roller 6 and following leveling roller 8 as both universal-joint spindles 31 of power transfering part and the viewpoint of 41 possibility of interference, dispose universal-joint spindle 31 and 41 in mutual hands-off mode.Particularly, from the cross pin unit 33 of the roller side of avoiding universal-joint spindle 31 and 41 and the viewpoint of 43 possibility of interference, the length of the ledge 8a of the axle of the ledge 6a of the axle of leveling roller 6 and following leveling roller 8 in the change, thereby the position of stagger cross pin unit 33 and 34.
Between upper frame 2 and top roll framework 5, along the plate width direction binding a plurality of (being seven in the present embodiment) fluid pressure type drum protruding (crowning) cylinder 12 is arranged.As shown in Figure 2, the protruding cylinder 12 of each drum along with the width of the current direction quadrature of sheet material S with last leveling roller 6 and the mode that leveling roller 8 is corresponding down arrange equally spacedly.As shown in Figure 1, the protruding cylinder 12 of this fluid pressure type drum is set to two row.In addition, the columns of the protruding cylinder of drum can be row, also can be for more than three row.
As shown in Figure 5, the protruding cylinder 12 of fluid pressure type drum has cylinder main body 51 and piston 52, and the upper end of piston 52 connects material 53 via sphere and links with upper frame 2, and the bottom of cylinder main body 51 links via sliding connector 54 and top roll framework 5.Be built-in with position-detection sensor 55 at the protruding cylinder 12 of this fluid pressure type drum.The protruding cylinder 12 of fluid pressure type drum stretch by hydraulic pressure, and in order to make the protruding cylinder 12 of fluid pressure type drum extend action, send sending oily circuit 56 and being used for the release circuit 57 of releasing hydraulic pressure of oil and connected to elongate sides grease chamber (not shown).Send oily circuit 56, be connected with the control valve 59 that send oil mass for detection of pressure detector 58 and the control of the hydraulic pressure of elongate sides grease chamber.Can use servo valve or proportional control valve as control valve 59.
As shown in Figure 2, above upper frame 2 and be in the horizontal middle position, be provided with the curved detection sensor 21 for detection of the transverse curvature of upper frame 2.As shown in Figure 1, the circuit that passes through along sheet material S is provided with two these curved detection sensors 21.Utilize the distance till this curved detection sensor 21 always detects the bottom of upper frame 2, and calculate the amount of bow of upper frame 2 accordingly.In addition, in the inner space of underframe 3 curved detection sensor 22 is installed.Center in the horizontal is provided with two these curved detection sensors 22 along the circuit that passes through of sheet material S.Utilize the distance till this curved detection sensor 22 always detects the upper end of underframe 3, and calculate the amount of bow of underframe 3 accordingly.In addition, also only the side in upper frame 2 and underframe 3 arranges the curved detection sensor, and proportion of utilization calculates the amount of bow of the framework of obtaining the opposing party.
Load cell (perhaps hydraulic pressure converter) 23 is installed between pushing cylinder 4a, 4b and shell 1, thus, can detect pushing cylinder 4a, 4b, the protruding cylinder 12 of fluid pressure type drum, top roll framework 5, top backing up roll 7, upward leveling roller 6, the compression of leveling roller 8, lower support roller 9, lower roll framework 10 down.
Utilize each inscape of the roll leveller 100 of control device 60 control present embodiments.Control device 60 comprises: the process controller that possesses CPU; The user interface that comprises keyboard, display etc. that is connected with this process controller; And the storage part that stores processing methods (recipe) such as control program (software), treatment conditions data.According to from indication of user interface etc., transfer processing method arbitrarily from storage part, and in process controller, carry out.Thus, under the control of process controller, utilize roll leveller 100 to carry out the desirable processing of aftermentioned (operating sequence).Processing methods such as control program, treatment conditions data, can utilize the storage medium that is stored in embodied on computer readable, for example the processing method of the state of disk (floppy disk, hard disk etc.), CD (CD, DVD etc.), magneto-optic disk (MO etc.), semiconductor memory etc.Replace, can also install from other, for example transmit at any time via special circuit and utilize processing method in online mode.
Control device 60 is according to the control program in the recording medium that is stored in embodied on computer readable, as described later the leveling roller 6 of pushing cylinder 4a, 4b, 8 volumes under pressure of pressing of the rectification (aligning) that is used for sheet material S are controlled, and driving mechanism 15 is controlled.In addition, 60 pairs of protruding cylinders 12 of fluid pressure type drum of control device carry out transverse curvature correction and the compression correction that throttling controls to carry out framework.And control device 60 carries out the following pressure-controlled of pushing cylinder 4a and 4b, carries out engaging-in Correction and Control especially.
Fig. 6 shows the control block diagram of control device 60.Herein, describe with the protruding control of drum, following pressure-controlled and the engaging-in center that is controlled to be.
Control device 60 has last level controller 62, the protruding controller 64 of drum that is made of microprocessor arbitrarily and presses down engaging-in controller 66.The integral body of last level controller 62 pair roller type straighteners 100 is controlled, the protruding controller 64 of drum is controlled the action of the protruding cylinder 12 of fluid pressure type drum based on the instruction of last level controller 62, press down engaging-in controller 66 and carry out the following pressure-controlled of pushing cylinder 4a and 4b, carry out engaging-in Correction and Control especially.
With the detected value of above-mentioned curved detection sensor 21,22, load cell 23, position-detection sensor 55 and pressure detector 58, the protruding controller 64 of input drum.The protruding controller 64 of drum is always grasped the transverse curvature amount of upper frame 2 and underframe 3 respectively according to the detected value of curved detection sensor 21 and 22, thus calculate the required protruding cylinder 12 of each fluid pressure type drum of the transverse curvature of revising framework overhang, be amount of restriction.In addition, the protruding controller 64 of drum is according to the detected value of the load cell 23 between pushing cylinder 4a, 4b and the shell 1, always grasp the protruding cylinder 12 of pushing cylinder 4a, 4b, fluid pressure type drum, top roll framework 5, top backing up roll 7, go up leveling roller 6, the compression of leveling roller 8, lower support roller 9, lower roll framework 10 down, thereby calculate the overhang of revising the required protruding cylinder 12 of each fluid pressure type drum of above-mentioned compression, be amount of restriction.Then, the protruding controller 64 of drum adds up to above-mentioned amount of restriction computing output signal, so that the pressure oil of pressure that will be corresponding with amount of restriction is delivered to the protruding cylinder 12 of each fluid pressure type drum.Then, this output signal is fed back to control valve 59 so that above-mentioned transverse curvature is controlled the protruding cylinder 12 of each fluid pressure type drum with the mode that compression becomes minimum.
In pressing down engaging-in controller 66, be set with the amount of being pressed into (volume under pressure) that waits to align the required pushing cylinder 4a of (rectification) sheet material S and 4b according to the thickness of slab of sheet material S.But, under the amount of being pressed into that is set (the setting amount of being pressed into) of the pushing cylinder of input side (being to be pushing cylinder 4a under the situation of A direction at the throughput direction of sheet material S) surpasses situation for the amount of being pressed into (the engaging-in limit amount of being pressed into) of the engaging-in limit of sheet material S, produce that sheet material S is not engaging-in to go up leveling roller 6 and engaging-in bad between the leveling roller 8 down.Therefore, so engaging-in bad and to pressing down the illustrated engaging-in correction card of engaging-in controller 66 input Fig. 7 in order to prevent.Utilize this engaging-in correction card of touch pad input of operating portion (not shown), or by reading this engaging-in correction card of storage medium input that stores engaging-in correction card.
In the engaging-in correction card of Fig. 7, be set with the engaging-in limit amount of being pressed into δ L(mm by the classification of each thickness of slab), engaging-in Correction and Control distance L b(mm) and press down erection rate IV(mm/sec).Then, surpass under the situation of the engaging-in limit amount of being pressed into δ L in the amount of being pressed into (volume under pressure) setting value of the pushing cylinder of input side, utilize the engaging-in correction card of Fig. 7 to implement engaging-in Correction and Control.Particularly, pressing down engaging-in controller 66 controls as follows: making the be pressed into amount of the front end of sheet material S during the distance size of the engaging-in Lb in summit of the benchmark leveling roller of input side (being to be the leveling roller of left end under the situation of A direction at throughput direction) is the engaging-in limit amount of being pressed into δ L, and the amount of being pressed into (volume under pressure) of the pushing cylinder of input side is become set the amount of being pressed at the erection rate IV that presses down that the front end of sheet material S sets according to engaging-in correction card from the distance back of the engaging-in Lb of benchmark leveling roller of input side.The positional information of the sheet material S of this moment, can try to achieve in the following manner, namely, pass through circuit in the leveling roller unit 20, the optical sensor (not shown) of the position of a plurality of front ends for detection of sheet material S is set, and after detecting the front end of sheet material S by above-mentioned a plurality of optical sensors, utilize impulse generator (not shown) to follow the tracks of the front end of sheet material S, try to achieve thus.
Action when next, the roll leveller 100 that utilizes such formation being carried out the rectification of sheet material S describes.
At first, under the state that sheet material S is guided to deflector roll 14 from the upstream side of the leveling roller unit 20 of roll leveller 100, carry sheet material S to leveling roller unit 20, and be inserted between leveling roller 6 and the following leveling roller 8.For example, be under the situation of A direction at the throughput direction of sheet material S, sheet material S is delivered to leveling roller unit 20 from the left side of Fig. 1, pushing cylinder 4a becomes the pushing cylinder of input side.
At this moment, will be according to thickness of sheet material S etc. and the required pushing cylinder 4a of the aligning (rectification) of sheet material S and the amount of being pressed into (volume under pressure) of 4b are set in control device 60, and press down sheet material S with this amount of being pressed into that is set (volume under pressure) on one side, utilize the driving force of driving mechanism 15 to make sheet material S current between last leveling roller 6 and following leveling roller 8 on one side, thereby sheet material S is corrected.
As mentioned above, require yield stress and the maximum of this moment to require thickness of slab to determine spacing P between leveling roller 6 up and down, each roller of 8 according to the maximum of the sheet material of correcting, and make the spacing P that is determined determine roller footpath D in the mode that satisfies 0.5＜D/P＜0.9.In addition, and up and down between leveling roller 6, each roller of 8 spacing P determine peak torque accordingly, thereby determine load-up condition.
In the past, from guarantee the viewpoint of enough road abilities and enough transmission moment of torsion with respect to spacing P between leveling roller 6 up and down, each roller of 8, be set at the diameter D of leveling roller big as far as possible, make it 1.0 times of spacing P more than 0.9 times and between less than roller at spacing P between roller, i.e. 0.9≤D/P＜1.0.In other words, the diameter of leveling roller is more big, and the bending radius of the sheet material that pass through is more little, and the maximum amount of being pressed into is more little, thus current easily, and, guarantee peak torque easily by increasing universal joint.Therefore, 0.9≤D/P＜1.0th, technology general knowledge.
But, recently, the demand that aligning is corrected more in the past than the sheet material that thin and yield stress is big is increasing, if increase to go up the diameter D of leveling roller 6 and following leveling roller 8 with satisfied 0.9≤D/P, then also produce with respect to sheet material thin and that yield stress is big and can't obtain enough amounts of being pressed into and can't align the situation of rectification fully.
In addition, correct under the situation of sheet material S at the internal stress that utilizes leveling roller 6,8 driving force to reduce sheet material S, if the thickness of sheet material S is made as T(mm), Young's modulus is made as E(N/mm 2), yield stress is made as σ y(N/mm 2), roller directly is made as D(mm), yield rate is made as η, then need to satisfy following formula (5):
1-η=（σy×D）/（E×T）·（5）
Herein, in order fully to reduce internal stress, therefore yield rate need, require to satisfy following formula more than 0.7:
0.3≥（σy×D）/（E×T）…（6）
If this formula distortion is then obtained following formula (7):
D≤0.3（E×T）/σy…（7）
That is, thickness of slab T is more thin, and yield stress σ y is more big, then more need reduce the diameter of leveling roller.But, only considered the scheme that reduces D under the situation of 0.9≤D/P satisfying in the past, so, then moment of torsion diminishes and can't make sheet material current.
Relative therewith, the inventor runs counter to technology general knowledge in the past and has found following thinking, namely, even use the leveling roller of path also can align rectification with respect to the mode that the maximum by the sheet material of correcting requires yield stress and the maximum of this moment to require spacing P between roller that thickness of slab determines to become D/P＜0.9, by like this leveling roller being made as the path increase amount of being pressed into, thereby can also can align rectification to the sheet material thin and that yield stress is big that can't fully correct in the past.
But below 0.5, then sheet material can be along roller as if D/P, and the bending radius of sheet material can not reduce accordingly with the roller footpath, therefore determines roller footpath D with respect to spacing P between roller in the mode that satisfies 0.5＜D/P＜0.9.
Require yield stress and the maximum of this moment to require thickness of slab to determine spacing P between leveling roller 6 up and down, each roller of 8 according to the maximum of the sheet material of correcting, and also determine peak torque according to this spacing P, therefore as universal-joint spindle 31,41 cross pin unit 33,34,43,44, can use the parts of the size corresponding with peak torque.Used in the past have D/P under the situation of the leveling roller of the diameter more than 0.9, the diameter of cross pin unit forms the value slightly littler than the diameter of leveling roller.Relative therewith, in the present embodiment, if the diameter D of D/P＜0.9 a last leveling roller 6 and following leveling roller 8 is littler than in the past, therefore under the situation that universal-joint spindle 31 and 41 disposes in overlapping mode as in the past, there are in the last leveling roller 6 and following leveling roller 8 of adjacency the cross pin unit 33 of both roller sides and 43 possibility of interference.Therefore, as mentioned above, the length of the ledge 8a of the axle of the ledge 6a of the axle of leveling roller 6 and following leveling roller 8 in the change, the position of cross pin unit 33 and 43 of staggering, thus both can not interfered.In the past, if reduce the diameter of leveling roller, then needed to reduce the cross pin unit therewith accordingly, have to reduce moment of torsion, but by the cross pin unit is staggered up and down, can guarantee required peak torque, and only reduce roller footpath D, thereby guarantee the required amount of being pressed into easily.
But, if the value of D/P below 0.55, then produce go up leveling roller 6 and following leveling roller 8 spool ledge 6a, 8a and the worry of cross pin unit 33,43 interference, so the value of D/P is preferably big than 0.55, is more preferably bigger than 0.6.In addition, under the situation of D/P＜0.9, can access the effect that the amount of being pressed into increases, but from obtaining the viewpoint of effect more reliably, the value of D/P is more preferably less than 0.7 preferably less than 0.8.
Next, as experiment, according to maximum yield stress is made as 1400Mpa, the maximum thickness of slab of this moment is made as 26mm, correspondence is made as 390mm with spacing between the roller of leveling roller therewith, and the roller of leveling roller directly is made as in the past scope that is 360mm(D/P=0.923) situation and be made as 260mm(D/P=0.667) situation, the result who aligning is corrected sheet material describes.In addition, both are all identical for torque conditions.Fig. 8 be expression to get thickness of slab be transverse axis, get yield stress is the longitudinal axis, yield rate is 70%(0.7) time the figure in rectifiable zone.As shown in the drawing, as can be seen, make roller footpath reduce D/P for 260mm is made as path, to compare during directly for 360mm with roller thus, rectifiable zone has produced expansion to scope thin and that yield stress is big.This be with respect to roller directly for the maximum amount of being pressed under the situation of 360mm is 50mm, 80mm brings for the maximum amount of being pressed under the situation of 260mm expands in the roller footpath.Thereby confirm, by the big amount of being pressed into of such acquisition, can in thinner and scope that yield stress is big, align rectification.
As described above, by making D/P littler than 0.9, by the increase amount of being pressed into, can apply strong bending to sheet material, easily the sheet material of thin and high yield stress is aligned rectification, but exist the inscape of devices such as upper frame 2, underframe 3 at horizontal (though the width of this representational framework etc., but above-mentioned width is parallel with the width of sheet material, therefore both are identical in a broad sense) crooked situation (transverse curvature), in these cases, the amount of being pressed into changes at the width of sheet material because of the influence of transverse curvature.Therefore, in the present embodiment, under the situation of the influence that will eliminate above-mentioned transverse curvature, detected value based on curved detection sensor 21 and/or 22, try to achieve the amount of bow of upper frame 2 and underframe 3, calculate the required amount of restriction that is used for eliminating the required protruding cylinder 12 of each fluid pressure type drum of this amount of bow, accordingly last leveling roller 6 is aligned correction.Thus, the volume under pressure that can reduce to be corrected on the width of material that is sheet material S is poor, thereby can implement the higher rectification of flatness.
In addition, except the required amount of restriction for the required protruding cylinder 12 of each fluid pressure type drum of the transverse curvature amount of eliminating upper frame 2 and underframe 3, can also be based on by being installed on pushing cylinder 4a, the pushing cylinder 4a that load cell between 4b and the shell 1 (perhaps hydraulic pressure converter) 23 is measured, 4b, the protruding cylinder 12 of fluid pressure type drum, top roll framework 5, top backing up roll 7, last leveling roller 6, following leveling roller 8, lower support roller 9, the compression information of lower roll framework 10, calculating is in order to eliminate the required amount of restriction of the required protruding cylinder 12 of each fluid pressure type drum of this compression, and comes last leveling roller 6 is aligned rectification based on the aggregate value of these two required amount of restriction.Thus, the volume under pressure that can further reduce to be corrected on the width of material that is sheet material S is poor, thereby can also implement the higher rectification of flatness.
In addition, in No. 3443036 communique of TOHKEMY, No. 3726146 communique of TOHKEMY such drum protruding (crowning) correction is at length put down in writing, the record content of above-mentioned communique also is contained in this specification.
Next, engaging-in Correction and Control is described.
As mentioned above, in control device 60, be set with the required pushing cylinder 4a of the aligning (rectification) of sheet material S and the amount of being pressed into (volume under pressure) of 4b, and utilize this amount of being pressed into that is set (volume under pressure) that sheet material S is corrected.But, the amount of being pressed into that is set (volume under pressure) at the pushing cylinder of input side (being to be pushing cylinder 4a under the situation of A direction at the throughput direction of sheet material S) surpasses under the situation of the engaging-in limit amount of being pressed into, and produces sheet material S and can't engaging-inly go up leveling roller 6 and engaging-in bad between the leveling roller 8 down.Particularly, littler than in the past at the diameter that as present embodiment, makes the leveling roller, increase under the situation of the amount of being pressed into, be easy to generate engaging-in bad.
Therefore, in these cases, carry out engaging-in Correction and Control based on the engaging-in correction card of Fig. 7, thereby prevent above-mentioned engaging-in bad.In addition, in fact charge to concrete numerical value in the engaging-in correction card of Fig. 7.
Particularly, on the engaging-in leveling roller unit 20 of sheet material S leveling roller 6 and down between the leveling roller 8 before, utilize the engaging-in controller 66 of pressing down of control device 60, to comparing according to the setting amount of the being pressed into δ e1 that is pressed into cylinder of the input side of condition enactments such as thickness of slab and the engaging-in limit the be pressed into amount δ L corresponding with the thickness of slab classification of sheet material S in the engaging-in correction card of Fig. 7.Then, surpass under the situation of the engaging-in limit amount of being pressed into δ L at the setting amount of being pressed into δ e1, travel to engaging-in modification model.
Namely, as shown in Figure 9, surpass under the situation of the engaging-in limit amount of being pressed into δ L at the setting amount of being pressed into δ e1, the amount of being pressed into of the input side pushing cylinder of the reality when sheet material S is engaging-in is restricted to the engaging-in limit amount of being pressed into δ L from the setting amount of being pressed into δ e1, and make this quantitative limitation that is pressed into, during the distance of the Lb that the front end of lasting sheet material S sets from the correction card of engaging-in Fig. 7 in summit of the benchmark leveling roller (being the leveling roller of #1 among Fig. 9) of input side, as shown in figure 10, at the front end of sheet material S after the distance of the engaging-in Lb of benchmark leveling roller of input side, utilization is set in and presses down erection rate IV in the engaging-in correction card, the amount of being pressed into (volume under pressure) of the pushing cylinder of input side is adjusted to sets the amount of being pressed into δ e1.In addition, in Fig. 9, Figure 10, will lean on the benchmark leveling roller of input side to be made as #1 most, mark numbering #2 ~ #9 from left to right in order for leveling roller afterwards.
Usually, in the engaging-in stage of sheet material S, as long as the amount of being pressed into is the engaging-in limit amount of being pressed into δ L, sheet material S just can be engaging-in up and down between the leveling roller, but this engaging-in limit amount of being pressed into δ L almost is directly proportional with the thickness of sheet material S.And, even if the length of the engaging-in regulation of sheet material S then makes the amount of being pressed into bigger than the engaging-in limit amount of being pressed into δ L, can not produce engaging-in bad yet.Therefore, in engaging-in correction card, set the engaging-in limit amount of being pressed into δ L according to the thickness of sheet material S, and be engaging-in Correction and Control distance L b with the length setting of afore mentioned rules, thereby can prevent engaging-in bad reliably, and promptly it is adjusted to the setting amount of being pressed into δ e1 and comes sheet material S is corrected, thereby the height that can keep sheet material S is corrected yield rate.
In addition, pressing down erection rate IV is from being pressed into the limit amount of being pressed into to being made as the speed of setting the amount of being pressed into δ e1.This presses down erection rate IV and also has suitable value accordingly with the thickness of slab of sheet material S, therefore presses down erection rate IV by setting at correction card, can be adjusted to the speed of the best and set the amount of being pressed into δ e1.
Increase at the diameter that as present embodiment, reduces the leveling roller under the situation of the amount of being pressed into, become very difficult between the leveling roller about sheet material S is engaging-in, but by carrying out aforesaid engaging-in Correction and Control, in these cases also can sheet material S is engaging-in up and down between the leveling roller with comparalive ease.Therefore, engaging-in Correction and Control is effective especially under the big situation of the amount of being pressed into as present embodiment.
In addition, under the situation of carrying out above-mentioned engaging-in Correction and Control, at first after carrying out corresponding with the engaging-in limit amount of being pressed into δ L pressing down gently, change over strong press down corresponding with setting the amount of being pressed into δ e1, therefore setting as present embodiment under the big situation of the amount of being pressed into δ e1, worry is damaged the inhomogeneity situation in the roller gap on the width of leveling roller because of the transverse curvature of upper frame 2 and underframe 3 etc.But, as mentioned above, by having used bend sensor 21,22 and the protruding correction of drum of the protruding cylinder 12 of fluid pressure type drum, can keep the uniformity on the width of roll leveller well, thereby under the big situation of the setting amount of being pressed into δ e1, also can carry out engaging-in Correction and Control reliably.
In addition, the present invention is not limited to above-mentioned embodiment, can carry out various distortion.For example, in the above-described embodiment, though show and utilize pushing cylinder to press leveling roller (pressing) under the logical printed line downwards to come situation that the shape of sheet material is corrected, also can utilize pushing cylinder to press down (upwards pressing) time leveling roller to logical printed line and come the shape of sheet material is corrected.In addition, only otherwise depart from the scope of the present invention, delete above-mentioned embodiment inscape part back and embodiment also be contained in the scope of the present invention.

Claims (16)

1. roll leveller, it is the roll leveller of sheet material being corrected by logical printed line, it is characterized in that possessing:
The leveling roller unit, described leveling roller unit has a plurality of leveling rollers, described a plurality of leveling rollers be staggered be disposed at described logical printed line about, Yi Bian correct with the described sheet material of one side clamping the current mode of described sheet material is rotated;
Press cylinder pressure, describedly be arranged at input side and the outlet side of the described sheet material in the described leveling roller unit respectively by cylinder pressure, press described sheet material via described leveling roller;
A plurality of backing rolls, described a plurality of backing rolls support described leveling roller; And
Driving mechanism, described driving mechanism make described leveling roller rotate to make described sheet material current,
The diameter D of described a plurality of leveling rollers is made as, requires between yield stress and the maximum roller that requires the described leveling roller that thickness of slab determines to satisfy the value of 0.5＜D/P＜0.9 for the spacing P with respect to the maximum by described sheet material.
2. roll leveller according to claim 1 is characterized in that,
Described roll leveller also possesses control device, described control device so that the mode between the roller of leveling up and down of the engaging-in described leveling roller unit of described sheet material the described amount of being pressed into that is pressed into described sheet material by cylinder pressure is controlled,
Described control device comprises engaging-in correction card, and described engaging-in correction card has according to the thickness setting of described sheet material: the amount of being pressed into of the limit between the roller of leveling up and down of the engaging-in described leveling roller unit of described sheet material that is the engaging-in limit amount of being pressed into; With displacement that is the engaging-in Correction and Control distance of the front end of the described sheet material that should be controlled to the described engaging-in limit amount of being pressed into,
Described control device is controlled in such a way: described input side by cylinder pressure described sheet material is carried out the setting amount of being pressed into that house of correction needs than the big situation of the described engaging-in limit amount of being pressed under, based on described engaging-in correction card, the amount of being pressed into by cylinder pressure with described input side before the front end of described sheet material arrives described engaging-in Correction and Control distance is constrained to the described engaging-in limit amount of being pressed into, and the front end of described sheet material arrived described engaging-in Correction and Control apart from the time make the amount of being pressed into by cylinder pressure of described input side become the described setting amount of being pressed into.
3. roll leveller according to claim 2 is characterized in that,
In described engaging-in correction card, also be set with front end at described sheet material arrived described engaging-in Correction and Control apart from the time the speed of the pressing when amount of being pressed into by cylinder pressure of described input side is made as the described setting amount of being pressed into,
Described control device is based on described engaging-in correction card, to described input side be altered to the described setting amount of being pressed into by the amount of being pressed into of cylinder pressure from the described engaging-in limit amount of being pressed into the time the speed of pressing control.
4. roll leveller, it is the roll leveller of sheet material being corrected by logical printed line, it is characterized in that possessing:
The leveling roller unit, described leveling roller unit has a plurality of leveling rollers, described a plurality of leveling rollers be staggered be disposed at described logical printed line about, Yi Bian correct with the described sheet material of one side clamping the current mode of described sheet material is rotated;
A plurality of backing rolls, the described a plurality of leveling rollers of lower support on these a plurality of backing rolls;
The pair of rolls framework, the described leveling roller of this pair of rolls framework lower support on described leveling roller and described backing roll and described backing roll;
Pair of frames, the described pair of rolls framework of lower support on this a pair of framework;
Press cylinder pressure, described input side and the outlet side that is arranged at the described sheet material in the described leveling roller unit by cylinder pressure respectively, press the side in the described pair of frames that is the framework that moves to described logical printed line, thereby between described leveling roller, press described sheet material via a side of the correspondence in the described roller framework;
Driving mechanism, described driving mechanism make described leveling roller rotation;
The protruding cylinder of fluid pressure type drum, the protruding cylinder of described fluid pressure type drum are equipped with a plurality of along the width with the current direction quadrature of described sheet material between the described corresponding side in described action framework and the described roller framework; And
Control device, described control device is controlled the rectification of described sheet material,
The diameter D of described a plurality of leveling rollers is made as, requires between yield stress and the maximum roller that requires the described leveling roller that thickness of slab determines to satisfy the value of 0.5＜D/P＜0.9 for the spacing P with respect to the maximum by described sheet material,
Described control device is controlled described pressing quantity by cylinder pressure on one side and is utilized described driving mechanism to make described sheet material current between described leveling roller on one side, and, described control device is tried to achieve the transverse curvature amount on the width of described pair of frames, calculate the required amount of restriction that is used for eliminating the required protruding cylinder of each described fluid pressure type drum of this amount of bow, and based on described required amount of restriction the protruding cylinder of each described fluid pressure type drum is carried out throttling control.
5. roll leveller according to claim 4 is characterized in that,
Described control device is based on described compression information of pressing cylinder pressure, the protruding cylinder of described fluid pressure type drum, described pair of rolls framework, described backing roll, described leveling roller, calculate the required amount of restriction that is used for eliminating the required protruding cylinder of each described fluid pressure type drum of this compression, and based on this required amount of restriction be used for to eliminate the aggregate value of the required required amount of restriction of the amount of bow of described pair of frames, come the protruding cylinder of each described fluid pressure type drum is carried out throttling control.
6. according to claim 4 or 5 described roll levellers, it is characterized in that,
Described control device comprises engaging-in correction card, and described engaging-in correction card has according to the thickness setting of described sheet material: the amount of being pressed into of the limit between the roller of leveling up and down of the engaging-in described leveling roller unit of described sheet material that is the engaging-in limit amount of being pressed into; With displacement that is the engaging-in Correction and Control distance of the front end of the described sheet material that should be controlled to the described engaging-in limit amount of being pressed into,
Described control device is controlled in such a way: described input side by cylinder pressure described sheet material is carried out the setting amount of being pressed into that house of correction needs than the big situation of the described engaging-in limit amount of being pressed under, based on described engaging-in correction card, the amount of being pressed into by cylinder pressure with described input side before the front end of described sheet material arrives described engaging-in Correction and Control distance is constrained to the described engaging-in limit amount of being pressed into, and the front end of described sheet material arrived described engaging-in Correction and Control apart from the time make the amount of being pressed into by cylinder pressure of described input side become the described setting amount of being pressed into.
7. roll leveller according to claim 6 is characterized in that,
In described engaging-in correction card, also be set with front end at described sheet material arrived described engaging-in Correction and Control apart from the time the speed of the pressing when amount of being pressed into by cylinder pressure of described input side is made as the described setting amount of being pressed into, described control device is based on described engaging-in correction card, to described input side be altered to the described setting amount of being pressed into by the amount of being pressed into of cylinder pressure from the described engaging-in limit amount of being pressed into the time the speed of pressing control.
8. according to each described roll leveller in the claim 1 ~ 7, it is characterized in that,
Described diameter D and described spacing P satisfy 0.55＜D/P＜0.8.
9. according to each described roll leveller in the claim 1 ~ 8, it is characterized in that,
Described driving mechanism has last leveling roller drive division and following leveling roller drive division,
Described upward leveling roller drive division comprises the transmission of power of using CD-ROM drive motor and described upward leveling roller being used CD-ROM drive motor be used to the last leveling roller that makes the driving of described upward leveling roller to the described upward last leveling roller power transfering part of leveling roller,
Described leveling roller drive division down comprises be used to the following leveling roller that described leveling roller is down driven gives the described following leveling roller power transfering part of leveling roller down with CD-ROM drive motor with described leveling roller down with the transmission of power of CD-ROM drive motor,
The described leveling roller of going up disposes in mutual hands-off mode with power transfering part with power transfering part and described leveling roller down.
10. roll leveller according to claim 9 is characterized in that,
The described leveling roller of going up is made of universal-joint spindle with power transfering part, this universal-joint spindle by with described go up the leveling roller with the CD-ROM drive motor side is connected first on the cross pin unit, with described last leveling roller spool ledge be connected second on cross pin unit and the jackshaft that couples together between the cross pin unit on the cross pin unit and second on described first constituted
Described leveling roller down is made of universal-joint spindle with power transfering part, this universal-joint spindle by the first time cross pin unit that is connected with the CD-ROM drive motor side with described down leveling roller, with described under the leveling roller spool second time cross pin unit being connected of ledge and the jackshaft that couples together between described first time cross pin unit and the described second time cross pin unit constituted
Change the described axle of going up the leveling roller ledge length and described leveling roller down spool the length of ledge, thereby cross pin unit and described second time cross pin unit are not interfered.
11. the antidote of a sheet material, it is to utilize roll leveller of sheet material being corrected by logical printed line to come the antidote of sheet material that described sheet material is corrected,
Described roll leveller possesses:
The leveling roller unit, described leveling roller unit has a plurality of leveling rollers, described a plurality of leveling rollers be staggered be disposed at described logical printed line about, Yi Bian correct with the described sheet material of one side clamping the current mode of described sheet material is rotated;
Press cylinder pressure, describedly be arranged at input side and the outlet side of the described sheet material in the described leveling roller unit respectively by cylinder pressure, press described sheet material via described leveling roller;
A plurality of backing rolls, described a plurality of backing rolls support described leveling roller; And
Driving mechanism, described driving mechanism make described leveling roller rotate to make described sheet material current,
The antidote of described sheet material is characterised in that,
Require yield stress and maximumly require spacing P between roller that thickness of slab determines described a plurality of leveling rollers according to the maximum of the described sheet material that should correct, and the diameter D of described leveling roller is made as the value that satisfies 0.5＜D/P＜0.9, come described sheet material is corrected.
12. the antidote of a sheet material, it is to utilize roll leveller of sheet material being corrected by logical printed line to come the antidote of sheet material that described sheet material is corrected,
Described roll leveller possesses:
The leveling roller unit, described leveling roller unit has a plurality of leveling rollers, described a plurality of leveling rollers be staggered be disposed at described logical printed line about, Yi Bian correct with the described sheet material of one side clamping the current mode of described sheet material is rotated;
A plurality of backing rolls, the described a plurality of leveling rollers of lower support on described a plurality of backing rolls;
The pair of rolls framework, the described leveling roller of this pair of rolls framework lower support on described leveling roller and described backing roll and described backing roll;
Pair of frames, the described pair of rolls framework of lower support on this a pair of framework;
Press cylinder pressure, described input side and the outlet side that is arranged at the described sheet material in the described leveling roller unit by cylinder pressure respectively, press the side in the described pair of frames that is the framework that moves to described logical printed line, thereby described sheet material is pressed between described leveling roller via a side of the correspondence in the described roller framework;
Driving mechanism, described driving mechanism make described leveling roller rotation; And
The protruding cylinder of fluid pressure type drum, the protruding cylinder of described fluid pressure type drum between a described corresponding side of described action framework and described roller framework, be equipped with along the width with the current direction quadrature of described sheet material a plurality of,
The antidote of described sheet material is characterised in that,
Require yield stress and maximumly require spacing P between roller that thickness of slab determines described a plurality of leveling rollers according to the maximum of the described sheet material that should correct, and the diameter D of described leveling roller is made as the value that satisfies 0.5＜D/P＜0.9, and
Try to achieve the transverse curvature amount on the width of described pair of frames, calculate the required amount of restriction that is used for eliminating the required protruding cylinder of each described fluid pressure type drum of this amount of bow, and based on described required amount of restriction the protruding cylinder of each described fluid pressure type drum is carried out throttling control.
13. the antidote of sheet material according to claim 12 is characterized in that,
Based on described compression information of pressing cylinder pressure, the protruding cylinder of described fluid pressure type drum, a pair of described roller framework, described backing roll, described leveling roller, calculate the required amount of restriction that is used for eliminating the required protruding cylinder of each described fluid pressure type drum of this compression, and based on this required amount of restriction be used for to eliminate the aggregate value of the required required amount of restriction of the amount of bow of described pair of frames, come the protruding cylinder of each described fluid pressure type drum is carried out throttling control.
14. the antidote according to each described sheet material in the claim 11 ~ 13 is characterized in that,
Based on according to the thickness setting of described sheet material the engaging-in correction card of the engaging-in limit amount of being pressed into and engaging-in Correction and Control distance, described input side by cylinder pressure described sheet material is revised the required setting amount of being pressed into than the big situation of the described engaging-in limit amount of being pressed under, the amount of being pressed into by cylinder pressure with described input side before the front end of described sheet material arrives described engaging-in Correction and Control distance is constrained to the described engaging-in limit amount of being pressed into, the front end of described sheet material arrived described engaging-in Correction and Control apart from the time make the amount of being pressed into by cylinder pressure of described input side become the described setting amount of being pressed into
The amount of being pressed into of the limit between the roller of leveling up and down that the described engaging-in limit amount of being pressed into is the engaging-in described leveling roller unit of described sheet material,
Described engaging-in Correction and Control distance is the displacement of the front end of the described sheet material that should be controlled to the described engaging-in limit amount of being pressed into.
15. the antidote of sheet material according to claim 14 is characterized in that,
In described engaging-in correction card, also be set with front end at described sheet material arrived described engaging-in Correction and Control apart from the time the speed of the pressing when amount of being pressed into by cylinder pressure of described input side is made as the described setting amount of being pressed into, based on described engaging-in correction card, to described input side be altered to the described setting amount of being pressed into by the amount of being pressed into of cylinder pressure from the described engaging-in limit amount of being pressed into the time the speed of pressing control.
16. the antidote according to each described sheet material in the claim 11 ~ 15 is characterized in that,
Described diameter D and described spacing P satisfy 0.55＜D/P＜0.8.
CN2013100496661A 2012-02-13 2013-02-07 Roller leveler and method for correcting sheet material Pending CN103240299A (en)

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CN203245215U (en) 2013-10-23

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