CN109940050A - A kind of on-line tuning method of vertical loop roller system - Google Patents
A kind of on-line tuning method of vertical loop roller system Download PDFInfo
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Abstract
The technical issues of the present invention relates to a kind of on-line tuning methods of vertical loop roller system, mainly solve tin plate sheet surface grey black defect.The present invention utilizes unit downtime, and strip corrects the gap value of loop side guide wheel, side guide wheel and track, by Numerical Control within 2mm along the moving trolley of the fixed loop in roll line direction with clearance gauge respectively first in extraction loop.Then by drawing the method for reference line, the installation accuracy of outlet looping fixing roller and mobile roller is adjusted, there can be no levelness intersections within 0.05mm/m, and between two rollers for precision controlling.After loop threading, when unit booting operation, strip is measured respectively with fixed loop back roll both sides distance △ x with ruler, numerical value adjusts roller verticality △ y according to testing result；Or the flatness △ z according to detection numerical value adjustment loop moving trolley, so that it is guaranteed that loop back roll system precision.Vertical loop roller system adjustment for the cold rolling mill production thin gauge lattice of tin plate.
Description
Technical field
The present invention relates to a kind of on-line tuning methods of vertical loop roller system, produce the thin gauge lattice of tin plate for cold rolling mill
The vertical loop roller system of (0.17mm-0.55 mm) adjusts.
Background technique
For making beverage, food cans, tin plate sheet surface grey black defect is the tin-plated product of the tin plating unit production of cold rolling mill
One of prevailing quality defect.Grey black is primarily generated in the production process of tin plate, in the substance of highly dispersed shape, is in when serious
Brown color is misty, to be unevenly distributed, wipe on test paper be then black powder.Its corrosion resistance, beauty for not only influencing product
Property, the binding force between tin layers and passivating film, between passivating film and coating is also seriously affected, is especially being applied when grey black is serious
After paint covering (beverage can such as processed), the generation of spot corrosion will be induced.This defect seriously affects the quality of strip, and both at home and abroad
A general character problem existing for high-speed plating solder.
Since grey black mechanism of production is not yet grasped completely, grey black degree there is no unified generally acknowledged characterizing method, be unfavorable for each
The lateral comparison of class correlative study causes the progress of tin plate grey black degree influence factor more slow.Under normal circumstances,
User can propose quality objection according to the degree that is evenly distributed of grey black, pursue a claim.The appearance and equipment, work that grey black is unevenly distributed
Skill condition, working specification all have relationship, are the results of series of factors comprehensive function.We observe by prolonged research,
Analysis leads to tin plate and loop back roll inordinate wear, causes tin plate table the main reason is that outlet looping roller system precision is inadequate
Face grey black is uneven, loop back roll roll surface also speckles with irregular grey black.
The tin-plated product of cold rolling mill tin plating unit production, Limit specifications tin plate (thickness≤0.18mm or width >=
The tin plate of 1046mm) by outlet looping, easily to play muscle be also one of prevailing quality defect.The reason of tin plate muscle is by roller
Sub- convexity, roller system precision, several factors such as loop trolley precision or template problem cause next, wherein roller convexity and template
Can pre-incident survey processing, but roller system precision, loop trolley precision are difficult to control, and ensure precision without effective method.Currently,
Domestic Wuhan Iron and Steel Plant Nippon Steel Corp, tin plating unit eliminate both defects using the method that outlet looping does not come into operation.But cancel
After outlet looping, when outlet shearing bundling, process section speed cannot be buffered, can only reduce speed, which limits units
Yield.It is also apparent from though this method can solve grey black with muscle problem, drawback is played.So there is an urgent need to a kind of vertical for unit
The roller of loop ties up to line method of adjustment, to solve the above problems.
By retrieval, it is described in Chinese patent CN201410530853 " vertical loop method for rapidly debugging " specification
A kind of vertical loop method for rapidly debugging is not closed for production line for shortening the install debug time of loop mobile framework
In strip operation and actual achievement application the data of quality state, for vertical loop roller system it is related measure, set-up procedure and
Method.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the disadvantages mentioned above of the prior art, provide a kind of vertical loop
Roller system method of adjustment, thinking of the invention is: being first with unit downtime, first strip in extraction loop, along roll line
The moving trolley of the fixed loop in direction, corrects the gap value of loop side guide wheel, side guide wheel and track, by numerical value control with clearance gauge respectively
System is within 2mm.Then by drawing the method for reference line, the installation accuracy of outlet looping fixing roller and mobile roller, precision are adjusted
There can be no levelness intersections within 0.05mm/m, and between two rollers for control.After loop threading, when unit booting operation,
Strip is measured respectively with fixed loop back roll both sides distance △ x with ruler, and numerical value adjusts roller verticality △ according to testing result
y；Or the flatness △ z according to detection numerical value adjustment loop moving trolley, so that it is guaranteed that loop back roll system precision, is thoroughly eliminated tin plating
The grey black that plate is generated due to sideslip is uneven or plays muscle phenomenon.
In order to solve the above technical problems, technical scheme is as follows, a kind of on-line tuning side of vertical loop roller system
Method, comprising the following steps:
The first step first extracts strip in loop out, fixes loop along roll line direction with tools such as chain blocks in compressor emergency shutdown
Moving trolley measures the gap value of loop side guide wheel, side guide wheel and track with clearance gauge respectively, records data；It is mobile to correct loop
Trolley flatness, adjustment keep side guide wheel, side guide wheel and interorbital gap uniform, and numerical value all≤2mm, gap error < 0.5mm.
Second step detects the levelness of all fixed loop back rolls by level meter or the method for beating rocker arm, is tied according to detection
Fruit data point reuse respective rollers, precision controlling is within 0.05mm/m.
Third step detects the levelness of all loop moving trolley activity loop back rolls by level meter, it is ensured that between two rollers
There can be no levelness intersections.
4th step, the method by drawing reference line detect the verticality of first fixed loop back roll, then use method of equal intervals
Detection adjusts other fixed loop back rolls, and precision controlling is within 0.05mm/m.
Domestic most advanced tinned wire can generally accomplish this several step, but under normal production scenarios, tin plate in loop
Surface grey black is unevenly distributed can not then solve with a muscle quality problems.So, it is also necessary to according to strip in loop actual motion
State, on-line tuning loop back roll system precision.
5th step measures strip both sides with ruler from fixed loop back roll edge distance △ when unit is operated normally respectively
x1With △ x2, see attached drawing 4, record data.
Determine that strip starts the fixation loop back roll for sideslip occur, it is understood that there may be following three kinds of situations:
The first situation: if △ x1- △ x2≤ 10mm can evaluate strip not sideslip in loop；
Second situation: if 10mm < △ x1- △ x2< 30mm finds out the fixed loop back roll of that maximum root of difference.Assuming that band
Steel center line running deviation value is A, is α, strip width B with roll line angle, then loop back roll disalignment amount △ y can be indicated
Are as follows:
①
Wherein,, ②
△ y numerical value are as follows:
③
If △ y numerical value is positive, indicate that the center of roller deviates in DS side entrance direction；If △ y numerical value is negative, roller is indicated
The center of son deviates in DS side outlet direction.At this time, the quantity that loop back roll verticality needs to adjust can be obtained according to numerical value are as follows:
S=△y*Lx*80% ④
Wherein LxIt is loop back roll two bearings gear spacing, 80% is the empirical value accumulated using actual achievement.
I.e. under unit normal running (operation) conditions, adjustment roller bearing seat deviates S, can rapidly control strip running deviation in precision
In range.If S is positive value, (or loop back roll WS side shaft holder is to entrance side to export direction for adjustment loop back roll DS side shaft holder
To)；If S is negative value, adjustment loop back roll DS side shaft holder is to Way in (or loop back roll WS side shaft holder to export direction).
Note: since the screw hole gap value of fixed loop back roll bearing block is smaller, so the offset △ S that can be adjusted is limited.
If adjusting roller unilateral side bearing block offset △ S1< S, it is necessary to adjust another side shaft holder again and deviate △ round about
S2, it is ensured that △ S1+ △ S2 = S ⑤
The third situation: △ x1- △ x2>=30mm, it is necessary to adjust the flatness of moving trolley.
Note: high speed tin plating unit at home and abroad generally has deviation rectification roller behind vertical loop, whether judges strip running deviation amount
It is excessive, directly see CPC correction amount show value just.Such as correction amount >=15mm, production requires shutdown adjustment roller system.In fact, real
The strip center line running deviation value A(of survey) more accurate than correction amount, adjustment data below are with measured value A
Subject to.
Assuming that strip center line running deviation value is A, it is α, strip width B with roll line angle, then loop moving trolley
Flatness offset △ z are as follows:
⑥
Wherein,,
△ z numerical value are as follows:
⑦
If △ z numerical value is positive, indicate that the flatness of loop moving trolley is offset up in the side DS；If △ z numerical value is negative, table
Show that the flatness of loop moving trolley is offset downward in the side DS.At this time, it can be obtained what moving trolley needed to adjust according to numerical value
Quantity SzAre as follows:
Sz=△z*Lz*80% ⑧
Wherein, LzIt is two counterweight armored rope stud spacing of loop moving trolley, 80% is the empirical value accumulated using actual achievement.
Next, available wirerope M90 × P6 stud needs the angle W rotated are as follows:
W=Sz/ 6 × 360 °=△ z*Lz/ 6 × * 80% 360 ° 9.
I.e. under unit normal running (operation) conditions, using the non-punching of loop moving trolley, the set period is put, the fixed simultaneously cap of stud is unclamped,
Nut is rotated into W angle.If △ x is positive value, adjustment stud nut is rotated in an anti-clockwise direction；If △ x is negative value, spiral shell is adjusted
Column nut is rotationally clockwise.
Beneficial effects of the present invention: the invention proposes for the production thin gauge lattice (0.17mm- of cold-rolled tin plate
Vertical loop roller system method of adjustment 0.55mm) is the precision that loop back roll system is first adjusted with conventional mechanical methods, further according to normal
Strip runs sideslip state under the condition of production, after measuring, calculating, the mechanically precision of on-line tuning loop back roll system,
Tin plate sheet surface grey black is avoided unevenly to occur with muscle mass defect.Line method of adjustment is tied up to by a kind of vertical loop roller
Application, can will the control of vertical loop roller system in function accuracy rating, thoroughly eliminating in loop tin plate sheet surface grey black not
Uniformly with rise muscle mass defect.
Detailed description of the invention
Fig. 1 is vertical loop roll system structure schematic diagram.
Fig. 2 vertical loop moving trolley main view.
Fig. 3 vertical loop moving trolley and counterweight armored rope schematic diagram.
Fig. 4 loop method for roller adjustment schematic diagram.
In figure: 1- motor；2- reduction gearbox;3- elevator；4- driving device；5- winding steel wire rope；6- counterweight armored rope；
7- counterweight；8- loop moving trolley；9- loop fixes trolley；10- vertical loop steel construction；11- side guide wheel；The side 12- guide wheel；
13- vertical track；14- fastening assembly；15- activity loop back roll, the fixed loop back roll of 16-.
Specific embodiment
As shown in Figs 1-4, a kind of vertical loop roller of the present embodiment system, comprising: be mounted on the fixation loop back roll 16 of bottom, live
Set moving trolley 8, loop fix trolley 9, movable loop back roll 15(diameter d, the barrel length L, two axis being mounted in moving trolley
Hold gear spacing Lx) and provide the driving device 4 (including motor 1, retarder 2, elevator 3 and winding steel wire rope 5) of strip tension with
And the steel construction 10 of support top mechanism device forms.Transmission device is installed on the ground, and winding steel wire rope 5 is for drawing loop
Moving trolley 8 is gone up and down along vertical track 13, and the weight of loop moving trolley 8 is by 7 compensation balance of counterweight.The one of counterweight armored rope 6
End passes through the stud of fastening assembly 14(M90 × P6, nut and cap) it is connected in the middle part of 8 side of loop moving trolley, other end connection
Counterweight 7, two 6 stud spacing L of counterweight armored ropez.Divide on the both sides with unit reference line vertical direction, loop moving trolley 8
Vertical track 13 is not clamped by 4 side guide wheels, 12,2 side guide wheels 11.
In compressor emergency shutdown, first extracts strip in loop out, fix loop along roll line direction with tools such as chain blocks
Moving trolley measures the gap value of loop side guide wheel, side guide wheel and track with clearance gauge respectively, records data.
The first step corrects loop moving trolley flatness.Adjustment keeps side guide wheel, side guide wheel and interorbital gap uniform, and
Numerical value all≤2mm, gap error < 0.5mm.
Second step detects the levelness of all fixed loop back rolls by level meter or the method for beating rocker arm, is tied according to detection
Fruit data point reuse respective rollers, precision controlling is within 0.05mm/m.
Third step detects the levelness of all loop moving trolley activity loop back rolls by level meter, it is ensured that between two rollers
There can be no levelness intersections.
4th step, the method by drawing reference line detect the verticality of first fixed loop back roll, then use method of equal intervals
Detection adjusts other fixed loop back rolls, and precision controlling is within 0.05mm/m.
When unit operates normally, strip both sides are measured respectively with ruler from fixed loop back roll edge distance △ x1With △ x2,
See attached drawing 1, records data.
The first step determines that strip starts the fixation loop back roll for sideslip occur, it is understood that there may be following three kinds of situations:
The first situation: if △ x1- △ x2≤ 10mm can evaluate strip not sideslip in loop；
Second situation: if 10mm < △ x1- △ x2< 30mm finds out the fixed loop back roll of that maximum root of difference.Assuming that band
Steel center line running deviation value is A, is α, strip width B with roll line angle, then fixed loop back roll disalignment amount △ y can
It indicates are as follows:
①
Wherein,, ②
It can calculate △ y numerical value are as follows:
③
If △ y numerical value is positive, indicate that the center of roller deviates in DS side entrance direction；If △ y numerical value is negative, roller is indicated
The center of son deviates in DS side outlet direction.At this time, it can get the number that loop back roll verticality needs to adjust according to numerical value
Amount are as follows:
S=△y*Lx*80% ④
Wherein LxIt is fixed loop back roll two bearings gear spacing, 80% is the empirical value accumulated using actual achievement.
I.e. under unit normal running (operation) conditions, adjustment roller bearing seat deviates S, can rapidly control strip running deviation in precision
In range.If S is positive value, fixed loop back roll DS side shaft holder is adjusted to export direction (or fixed loop back roll WS side shaft holder
To Way in)；If S is negative value, fixed loop back roll DS side shaft holder is adjusted to Way in (or fixed loop back roll WS side axle
Seat is held to export direction).
Note: since the screw hole gap value of fixed loop back roll bearing block is smaller, so the offset △ S that can be adjusted is limited.
If adjusting roller unilateral side bearing block offset △ S1< S, it is necessary to adjust another side shaft holder again and deviate △ round about
S2, it is ensured that △ S1+ △ S2 = S ⑤
The third situation: △ x1- △ x2>=30mm, it is necessary to adjust the flatness of loop moving trolley.
Note: high speed tin plating unit at home and abroad generally has deviation rectification roller behind vertical loop, whether judges strip running deviation amount
It is excessive, directly see CPC correction amount show value just.Such as correction amount >=15mm, production requires shutdown adjustment roller system.In fact, real
The strip center line running deviation value A(of survey) more accurate than correction amount, adjustment data below are with measured value A
It is quasi-.
Assuming that strip center line running deviation value is A, it is α, strip width B with roll line angle, then loop moving trolley
Flatness offset △ z are as follows:
⑥
Wherein,,
It can calculate △ z numerical value are as follows:
⑦
If △ z numerical value is positive, indicate that the flatness of loop moving trolley is offset up in the side DS；If △ z numerical value is negative, table
Show that the flatness of loop moving trolley is offset downward in the side DS.At this time, loop moving trolley needs can be obtained out according to numerical value
The quantity S of adjustmentzAre as follows:
Sz=△z*Lz*80% ⑧
Wherein, LzIt is two counterweight armored rope stud spacing of loop moving trolley, 80% is the empirical value accumulated using actual achievement.
Next, wirerope M90 × P6 stud nut needs the angle W rotated out are as follows:
W=Sz/ 6 × 360 °=△ z*Lz/ 6 × * 80% 360 ° 9.
I.e. under unit normal running (operation) conditions, using the non-punching of loop moving trolley, the set period is put, the fixed simultaneously cap of stud is unclamped,
Stud nut is rotated into W angle.If △ x is positive value, adjustment stud nut is rotated in an anti-clockwise direction；If △ x is negative value, adjust
Whole stud nut is rotationally clockwise.
The application of line method of adjustment is tied up to by a kind of vertical loop roller, vertical loop roller system can be controlled to function essence
Spend range in, thoroughly eliminate loop in tin plate sheet surface grey black unevenly with rise muscle mass defect.
By taking real data as an example, unit normally produces the tin plate of 0.18mm*835mm, measures strip both sides respectively with ruler
From fixed loop back roll edge distance △ x1With △ x2, see attached drawing 4, record data.
Assuming that actual measurement Max (△ x1=280mm, △ x2=285mm), due to △ x1- △ x2< 10mm, it is possible to evaluate
Strip not sideslip in loop.
Assuming that actual measurement Max (△ x1=290mm, △ x2=275mm), due to 10mm < △ x1- △ x2< 30mm, so needing
The fixed loop back roll verticality of on-line tuning is wanted, then loop back roll disalignment amount △ 1. 2. 3. can be fixed out according to formula
Y numerical value are as follows:
mm
Due to △ y > 0, indicate that the center of roller offsets by 30mm in DS side entrance direction.Work 4. can be extrapolated according to formula
The quantity that set roller verticality needs to adjust are as follows:
S=△y*Lx*80% =30mm*1.6*80%= 38.4mm
Wherein LxIt is loop back roll two bearings gear spacing, Lx=1.6m, 80% is the empirical value accumulated using actual achievement.
I.e. under unit normal running (operation) conditions, adjustment loop back roll DS side shaft holder is to export direction (or loop back roll WS side axle
Seat is held to Way in) offset S, it is ensured that total adjustment amount S=38.4mm.In this way, strip not sideslip in loop can be made rapidly.
Assuming that actual measurement Max (△ x1=235mm, △ x2=330mm), then it is mobile 6. 7. can to extrapolate loop according to formula
Trolley flatness offset △ z are as follows:
mm
Wherein, LzIt is two counterweight armored rope stud spacing of loop moving trolley, Lz=2.8m.
Due to △ z < 0, indicates that the flatness of loop moving trolley is offset downward in the side DS, 8. can be extrapolated according to formula
Loop moving trolley needs the quantity S adjustedzAre as follows:
Sz=△z*Lz*80%=851.2mm
Next, the angle W that wirerope M90 × P6 stud needs to rotate can be extrapolated are as follows:
W=Sz+ 309 degree of/6 × 360 °=851.2/6 × 360 °=141 circle
I.e. under unit normal running (operation) conditions, using the non-punching of loop moving trolley, the set period is put, the fixed simultaneously cap of stud is unclamped,
Adjust stud nut+309 degree of 141 circle rotationally clockwise.In this way, strip not sideslip in loop can be made rapidly.
Claims (2)
1. a kind of on-line tuning method of vertical loop roller system, it is characterized in that: the following steps are included:
The first step first extracts strip in loop out, fixes loop along roll line direction with tools such as chain blocks in compressor emergency shutdown
Moving trolley measures the gap value of loop side guide wheel, side guide wheel and track with clearance gauge respectively, records data；It is mobile to correct loop
Trolley flatness, adjustment keep side guide wheel, side guide wheel and interorbital gap uniform, and numerical value all≤2mm, gap error < 0.5mm；
Second step is detected the levelness of all fixed loop back rolls by level meter or the method for beating rocker arm, counted according to testing result
According to adjustment respective rollers, precision controlling is within 0.05mm/m；
Third step detects the levelness of all loop moving trolleys, movable loop back roll by level meter, it is ensured that cannot between two rollers
There is levelness to intersect；
4th step, the method by drawing reference line detect the verticality of first fixed loop back roll, are then detected using method of equal intervals
Other fixed loop back rolls are adjusted, precision controlling is within 0.05mm/m；
5th step measures strip both sides with ruler from fixed loop back roll edge distance △ x when unit is operated normally respectively1And △
x2, record data；
(1) if △ x1- △ x2≤ 10mm can evaluate strip not sideslip in loop；
(2) if 10mm < △ x1- △ x2< 30mm finds out the fixed loop back roll of that maximum root of difference；Assuming that strip center line
Running deviation value is A, is α, strip width B with roll line angle, then loop back roll disalignment amount △ y is indicated are as follows:
Wherein,,
△ y numerical value are as follows:
If △ y numerical value is positive, indicate that the center of roller deviates in DS side entrance direction；If △ y numerical value is negative, roller is indicated
The center of son deviates in DS side outlet direction；At this time, the number that fixed loop back roll verticality needs to adjust is obtained according to numerical value
Amount are as follows:
S=△y*Lx*80%
Wherein LxIt is fixed loop back roll two bearings gear spacing, 80% is the empirical value accumulated using actual achievement；
I.e. under unit normal running (operation) conditions, adjustment roller bearing seat deviates S, can control strip running deviation in accuracy rating,
If S is positive value, fixed loop back roll DS side shaft holder is adjusted to export direction；If S is negative value, the fixed side loop back roll DS is adjusted
Bearing block is to Way in；
If adjusting roller unilateral side bearing block offset △ S1< S, it is necessary to adjust another side shaft holder again and deviate round about
△S2, it is ensured that △ S1+ △ S2 = S
(3) △ x1- △ x2>=30mm, it is necessary to adjust the flatness of loop moving trolley.
2. the on-line tuning method of a kind of vertical loop roller system according to claim 1, it is characterized in that: if 10mm < △
x1- △ x2< 30mm, it is assumed that strip center line running deviation value is A, is α, strip width B with roll line angle, then loop moves
Dynamic trolley flatness offset △ z are as follows:
Wherein,,
△ z numerical value are as follows:
If △ z numerical value is positive, indicate that the flatness of loop moving trolley is offset up in the side DS；If △ z numerical value is negative,
Indicate that the flatness of loop moving trolley is offset downward in the side DS；At this time, it can get moving trolley according to numerical value to need to adjust
Quantity SzAre as follows:
Sz=△z*Lz*80%
Wherein, LzIt is two counterweight armored rope stud spacing of loop moving trolley, 80% is the empirical value accumulated using actual achievement；
Next, available wirerope M90 × P6 stud nut needs the angle W rotated are as follows:
W=Sz/ 6 × 360 °=△ z*Lz/ 6 × * 80% 360 °
I.e. under unit normal running (operation) conditions, using the non-punching of loop moving trolley, the set period is put, the fixed simultaneously cap of stud is unclamped,
Stud nut is rotated into W angle；If △ x is positive value, adjustment stud nut is rotated in an anti-clockwise direction；If △ x is negative value, adjust
Whole stud nut is rotationally clockwise.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904483A (en) * | 2019-11-29 | 2020-03-24 | 武汉钢铁有限公司 | Adjusting tool and adjusting method for electrogalvanizing anode box by vertical gravity method |
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| CN1323731A (en) * | 2000-03-28 | 2001-11-28 | 佳能株式会社 | Web feeding apparatus, device and method for proceeding electro-plating by using said apparatus |
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