CN108941211A - Hot-rolled leveling unit and the method for handling strip - Google Patents
Hot-rolled leveling unit and the method for handling strip Download PDFInfo
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- CN108941211A CN108941211A CN201810958935.9A CN201810958935A CN108941211A CN 108941211 A CN108941211 A CN 108941211A CN 201810958935 A CN201810958935 A CN 201810958935A CN 108941211 A CN108941211 A CN 108941211A
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- tension roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/72—Rear end control; Front end control
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Abstract
The present invention provides a kind of hot-rolled leveling units, it include: uncoiler, straightener, four-roller planisher, exit bend roller and the coiling machine set gradually along strip moving direction, wherein, further include: outlet tensioner, tensioner is exported to be arranged between four-roller planisher and exit bend roller, exporting tensioner includes rack, upper tension roller and at least two lower tension rollers, lower tension roller is fixedly connected with rack, and upper tension roller is close to or far from lower tension roller strip to be clamped between upper tension roller and lower tension roller.The purpose of the present invention is to provide a kind of hot-rolled leveling units for being provided with outlet tensioner.
Description
Technical field
The present invention relates to technical field of steel rolling, more specifically, are related to a kind of hot-rolled leveling unit and handle the side of strip
Method.
Background technique
After cold rolling DP dual phase steel, the production of high-strength steel hot rolling producing line, to guarantee scroll and strip shape quality, need in smooth work
Sequence carries out smooth processing, it is ensured that sour tandem rolling process threading production is along steady.It is flattened since DP dual phase steel, high-strength hardness of steel are higher
It after line in the treatment process of tail portion, is generally depressed using bending roll, so that it is generated certain deformation, improve tail portion strip shape quality.This
Kind of mode easily causes tail portion 5-10 meters of range strip shape quality bad, or even there are problems that seriously upwarping, and the steel grade intensity compared with
Height will appear outer ring in sour tandem rolling uncoiling and upwarp and can not be successfully threading.It needs to carry out manually threading to handle, or gets rid of volume
Smooth processing is carried out again, seriously constrains the promotion of upstream and downstream rhythm of production.
Summary of the invention
For problem present in the relevant technologies, the purpose of the present invention is to provide a kind of are provided with to export tensioner
Hot-rolled leveling unit and the method for handling strip.
To achieve the above object, one aspect of the present invention provides a kind of hot-rolled leveling unit, comprising: along strip moving direction
Uncoiler, straightener, four-roller planisher, exit bend roller and the coiling machine set gradually, wherein further include: outlet tension
Device, outlet tensioner be arranged between four-roller planisher and exit bend roller, outlet tensioner include cylinder, bracket,
Rack, upper tension roller and at least two lower tension rollers, lower tension roller are rotatably arranged in rack, the output shaft of cylinder with
Bracket is fixedly connected, upper tension roller and bracket pivotable connection, and upper tension roller is located at the top of lower tension roller, cylinder driving
Upper tension roller is close to or away from lower tension roller strip to be clamped between upper tension roller and lower tension roller.
According to one embodiment of present invention, there are two lower tension roller settings, and the first mandrel of two lower tension rollers
In parallel and it is located at sustained height.
According to one embodiment of present invention, the radius R1 of lower tension roller and the radius R2 of upper tension roller are identical, and on
Second mandrel of jockey pulley and the first mandrel of each lower tension roller are parallel and be equidistant.
According to one embodiment of present invention, the distance between first mandrel of two lower tension rollers L0 meets:
2 (R1+R2) > L0 > 2R1.
According to one embodiment of present invention, the roll surface of upper tension roller and datum plane phase defined by two the first mandrels
Away from minimum range be first distance, the depression distance L2 of upper tension roller is the difference of the radius R1 of first distance and lower tension roller,
When exporting tensioner and being in the working condition for clamping strip, depression distance L2 is less than 0.
According to one embodiment of present invention, outlet tensioner includes for controlling between upper tension roller and lower tension roller
Apart from position-limit mechanism.
According to one embodiment of present invention, position-limit mechanism includes and the coaxial mounted photoelectric coding of the output shaft of cylinder
Device, photoelectric encoder measure the stroke of output shaft.
According to one embodiment of present invention, pressure roller is provided between exit bend roller and coiling machine.
Another aspect of the present invention also provides a kind of hot-rolled leveling unit processing strip being related to using any of the above-described embodiment
Method, comprising:
S1. it adjusts upper tension roller to separate with lower tension roller, strip is made to pass through outlet between upper tension roller and lower tension roller
Tensioner；
S2. measurement outlet tensioner at a distance from the magnetic tape trailer of strip, when distance be less than or equal to pre-determined distance, make open
Power roller is mobile towards lower tension roller, to squeeze strip.
According to one embodiment of present invention, strip pass through outlet tensioner before, strip sequentially pass through uncoiler,
Straightener and four-roller planisher, and strip passes through outlet tensioner and successively passes through exit bend roller later and batch
Machine.
The beneficial technical effect of the present invention lies in:
In hot-rolled leveling unit of the present invention and strip processing method, between four-roller planisher and exit bend roller
It is provided with outlet tensioner, the cylinder in the outlet tensioner can drive upper tension roller close to or away from lower tension roller,
When the main part of strip passes through outlet tensioner, upper tension roller can't squeeze lower tension roller far from lower tension roller, and two
Person is in discrete state, make strip main body normal through；When outlet, tensioner is less than or equal at a distance from the magnetic tape trailer of strip
When pre-determined distance, upper tension roller is mobile towards lower tension roller, to squeeze strip, tail part of band steel is extruded and batches coil of strip outer diameter
The curvature to match, obtains suitable tail part of band steel shape, so can mechanization be effectively improved it is smooth after on high-strength steel tail portion
Problem is stuck up, the high-strength steel nose for being difficult to inhibit in prior art technology is solved the problems, such as, is provided for downstream process Production Cohesion
Quality assurance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of hot-rolled leveling unit according to an embodiment of the present invention；
Fig. 2 is the structural schematic diagram for exporting tensioner according to an embodiment of the present invention.
Specific embodiment
Below with reference to attached drawing, embodiments of the present invention is described in detail.It should be noted that following embodiment is simultaneously
It does not constitute a limitation of the invention, can be combined and replace between different embodiments.
As depicted in figs. 1 and 2, An embodiment provides a kind of hot-rolled leveling units.The hot rolling and leveling machine
Group includes at least: the uncoiler 1 that is set gradually along strip moving direction, straightener 3, four-roller planisher 4, exit bend roller 7 with
And coiling machine 8, wherein further include: outlet tensioner 6, outlet tensioner 6 are arranged in four-roller planisher 4 and exit bend
Between roller 7, outlet tensioner 6 includes rack, upper tension roller 10 and at least two lower tension rollers 12, lower tension roller 12 and machine
Frame is fixedly connected, and upper tension roller 10 is close to or far from lower tension roller 12 strip is clamped in upper tension roller 10 and lower
Between power roller 12.
Specifically, outlet tensioner 6 further includes cylinder and bracket, and the output shaft of cylinder is fixedly connected with bracket, and upper
Power roller 10 and bracket pivotable connection, and cylinder drives upper tension roller 10 close to or away from lower tension roller 12 to clamp strip
Between upper tension roller 10 and lower tension roller 12.
In the hot-rolled leveling unit that above-described embodiment is related to, it is provided with out between four-roller planisher 4 and exit bend roller 7
Mouthful tensioner 6, the cylinder in the outlet tensioner, can drive upper tension roller close to or away from lower tension roller, work as strip
Main part pass through outlet tensioner when, upper tension roller can't squeeze lower tension roller far from lower tension roller, and the two is in
Discrete state, make strip main body normal through；When outlet tensioner be less than or equal at a distance from the magnetic tape trailer of strip it is default away from
From when, upper tension roller is mobile towards lower tension roller, to squeeze strip, tail part of band steel is extruded and batches coil of strip outer diameter and matches
Curvature, obtain suitable tail part of band steel shape, so can mechanization be effectively improved it is smooth after high-strength steel tail portion upwarp problem,
It solves the problems, such as the high-strength steel nose for being difficult to inhibit in prior art technology, provides quality for downstream process Production Cohesion and protect
Barrier.
Specifically, in another embodiment, successively include uncoiler 1, enter along strip moving direction hot-rolled leveling unit
Mouth pinch roller 2, straightener 3, four-roller planisher 4, cutter 5, outlet tensioner 6, exit bend roller 7 and tension coiling
Machine.Strip after four-roller planisher 4 is smooth enters cutter 5 and is sheared, for being cut end to end to strip when needing
It removes, bundling cutoff process etc..Outlet tensioner 6 and exit bend roller 7 are twice bent strip, it is ensured that scroll is qualified.
As shown in Fig. 2, according to one embodiment of present invention, exporting in tensioner 6, lower tension roller 12 is provided with two
It is a, and the first mandrel 14 of two lower tension rollers is in parallel and positioned at sustained height.Strip can be clamped in by upper tension roller 10
Between upper tension roller 10 and two lower tension rollers 12, to obtain desired strip scroll.
It is to be understood that the above-mentioned sustained height that is located at refers to that two the first mandrels 14 are placed with hot-rolled leveling unit
Plane is equidistant.
It should also be appreciated that outlet tensioner 6 also may include other quantity according to specific production needs
Upper tension roller 10 and lower tension roller 12, it is only necessary to the strip of intended shape can be obtained.
For example, in one embodiment, outlet tensioner 6 may include a upper tension roller 10, and surround upper
Three lower tension rollers 12 that power roller 10 is arranged.When exporting the operation of tensioner 6, upper tension roller 10 and three lower tension rollers 12 are common
Strip is clamped, strip is squeezed, to control the shape of tail part of band steel.
Referring again to Fig. 2, according to one embodiment of present invention, the radius R1 of lower tension roller and the radius R2 of upper tension roller
It is identical, and the second mandrel 16 of upper tension roller 10 is parallel with the first mandrel 14 of each lower tension roller 12 and is equidistant.
In other words, the company of the projection of the first mandrel 14 and the second mandrel 16 in the perpendicular perpendicular to holding plane
Line constitutes isosceles triangle.
Certainly, the second mandrel 16 of upper tension roller 10 can not also at a distance from the first mandrel 14 of each lower tension roller 12
It together, can be according to the tail part of band steel shape specifically needed at this point, upper tension roller 10 is different to the pressure of each lower tension roller 12
Shape, radius and distance between the two to upper tension roller 10 and lower tension roller 12 are adjusted.
Further, as shown in Fig. 2, according to one embodiment of present invention, the first mandrel 14 of two lower tension rollers 12
The distance between L0 meet:
2 (R1+R2) > L0 > 2R1.
According to one embodiment of present invention, benchmark defined by the roll surface of upper tension roller 10 and two the first mandrels 14 is flat
The minimum range of face apart is first distance, and the depression distance L2 of upper tension roller 10 is the radius R1 of first distance and lower tension roller
Difference, when export tensioner be in clamping strip working condition when, depression distance L2 is less than 0.
In another embodiment, when upper tension roller 10 is against lower tension roller 12, roller core on jockey pulley in tensioner
Angle α between axis and two lower roller core shafts meets:
Sin α=L0/2 (R1+R2)；
α=arcsin α [L0/2 (R1+R2)]；
Wherein, to keep three jockey pulley compact layouts, effects more excellent, general α angle initialization is 30 °~60 °.
At this point, the depression distance L2 (when L2 > 0) of upper tension roller 12, can be determined by following formula:
L2=R2-L1=R2- [(R1+R2) cos α-R1]=(R1+R2) (1-cos α)；
If when L2≤0, L2=R2-L1；
Wherein, L1 is the upper roller for exporting the second mandrel 16 and lower tension roller 12 after the pressure of upper tension roller 10 in tensioner 6
Distance between face.
Specifically, according to one embodiment of present invention, outlet tensioner includes for controlling upper tension roller 10 under
The distance between jockey pulley 12 position-limit mechanism.After upper tension roller 10 presses to pre-determined distance, position-limit mechanism can be by upper tension
Roller 10 is maintained at the distance and avoids excessively pushing.
Specifically, according to one embodiment of present invention, position-limit mechanism includes and the coaxial mounted light of the output shaft of cylinder
Photoelectric coder, photoelectric encoder measure the stroke of output shaft.Displacement data is transmitted to control unit and preset by photoelectric encoder
Value is compared, and starts or stops work to control cylinder.That is, photoelectric encoder is electrically connected with control unit.
Alternatively, in another embodiment, position-limit mechanism also may include being arranged in upper tension roller 10 or lower tension roller 12
On pressure sensor.When pressure sensor senses pressure data, which is transmitted to control unit, control is single
The pressure data is compared with preset value for member, to control the on-off of driving device.
Alternatively, In yet another embodiment, it, can also be straight after pressure sensor senses the pressure data of default value
Connect the power output of cutting driving device.
In one alternate embodiment, it is gone up and down by hydraulic control upper tension roller 10, it is hydraulic by increasing hydraulic valve monitoring
Cylinder pressure.Pressure controls generally in 50-140bar.
According to one embodiment of present invention, the spacing of four-roller planisher and outlet tensioner is 8 meters.
In order to solve the above technical problems, being upwarped the present invention provides a kind of using the smooth rear high-strength steel tail portion of jockey pulley improvement
Problem, comprising: upper tension roller, lower tension roller, upper tension roller position control (worm gear mechanism).
As depicted in figs. 1 and 2, hot-rolled leveling process mainly includes setting gradually: walking beam, uncoiler, entrance guiding
Platform, centralized positioning controller (C.P.C), straightener, four-roller planisher, cutter, tail portion processing and modus ponens sampling device check
Platform, outlet tensioner, exit bend roller, delivery guide, pull reel (EPC), outlet side coil car, outlet stepping
Beam, baler, coil of strip weighing, spray number.
Before the outlet tensioner 6 of planisher is located at coiling machine, after outlet side is led, for establishing tension with coiling machine, and
Can tail part of band steel be extruded and be batched the curvature that coil of strip outer diameter matches.Exporting tensioner is three-roller type tension roll assembly at two
Root lower tension roller 12 is fixed on the rack, and upper tension roller 10 is controlled by hydraulic cylinder and gone up and down.
In the hot-rolled leveling unit, in outlet, the downstream of tensioner is also provided with by hydraulic cylinder control lifting
Bending roll 7 and pressure roller 9, further to carry out shaping to strip.
Pressure limit is additionally provided with for the depressing position for accurately controlling upper tension roller to obtain suitable tail part of band steel shape
Device.The device is electronic worm gear mechanism, and limited block position is detected by photoelectric encoder.The opening and closing of clutch is by cylinder
It completes.
The outlet tensioner 6 of planisher (about 8 meters or so of smooth coiling machine anomaly complete machine) after four-roller planisher whipping,
Reel tension roller is put at this time and pressure tail roller jointly compresses Tail Morphology of Adult and controls, and establishes necessary tension with coiling machine, according to
Compression distance is different, and tail part of band steel will appear and batch coil of strip outer ring gradually matched curvature, sticks up so that tail part of band steel is micro-, delays button
Or it is held on the upside of coil of strip.And reach the coil of strip magnetic tape trailer shape of requirement.
Strip it is flattened close to tail portion when, and (four-roller planisher roll spacing separates out mouth after four-roller planisher whipping for tail portion
About 8 meters of power roller), tail part of band steel is in free state in flat line.
Upper tension roller 10 is depressed by turbine and worm mechanism, sets different pressures according to varying strength, specification steel grade
Amount, and smooth pressure tail roller (for positioning tail portion) is put into, smooth coiling machine and outlet jockey pulley establish some tension at this time.
Changed according to compression distance, tail part of band steel will appear and batch the curvature that coil of strip outer ring gradually matches, so that band
Steel, which is batched coiled rear molding portion and is in micro-, to be stuck up, slow button or is held in coil of strip outer ring.And reach the coil of strip tail shape of requirement.
The embodiment of another aspect of the present invention also provides a kind of hot-rolled leveling unit being related to using any of the above-described embodiment
The method for handling strip, comprising:
S1. it adjusts upper tension roller 10 to separate with lower tension roller 12, makes strip between upper tension roller 10 and lower tension roller 12
Across outlet tensioner 6；
S2. measurement outlet tensioner 6 is with the magnetic tape trailer of strip at a distance from, when distance is less than or equal to pre-determined distance, makes
Jockey pulley 10 is mobile towards lower tension roller 12, to squeeze strip.
That is, upper tension roller 10 can't squeeze lower tension when the main part of strip passes through outlet tensioner 6
Roller 12, the two are in discrete state.When outlet, tensioner 6 is less than or equal to pre-determined distance at a distance from the magnetic tape trailer of strip,
Upper tension roller 10 is mobile towards lower tension roller 12, to squeeze strip, obtains expected tail part of band steel shape.
In a specific embodiment, above-mentioned pre-determined distance is 8 meters.
Specifically, in one alternate embodiment, before strip passes through outlet tensioner 6, strip is sequentially passed through out
Volume machine 1, straightener 3 and four-roller planisher 4, and strip passes through outlet tensioner 6 and successively passes through exit bend roller 7 later
And coiling machine 8.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of hot-rolled leveling unit, comprising: uncoiler (1), the straightener (3), four-roller set gradually along strip moving direction
Planisher (4), exit bend roller (7) and coiling machine (8), which is characterized in that further include:
It exports tensioner (6), the outlet tensioner (6) is arranged in the four-roller planisher (4) and the exit bend
Between roller (7),
The outlet tensioner (6) includes cylinder, bracket, rack, upper tension roller (10) and at least two lower tension rollers
(12), the lower tension roller (12) is rotatably arranged in the rack, and the output shaft of the cylinder is fixed with the bracket
Connection, the upper tension roller (10) and the bracket pivotable connection, and
The upper tension roller (10) is located at the top of the lower tension roller (12), and the cylinder drives the upper tension roller (10) to connect
Close or remote from the lower tension roller (12) the strip is clamped in the upper tension roller (10) and the lower tension roller (12)
Between.
2. hot-rolled leveling unit according to claim 1, which is characterized in that there are two lower tension roller (12) settings,
And the first mandrel (14) of two lower tension rollers is parallel and is located at sustained height.
3. hot-rolled leveling unit according to claim 2, which is characterized in that the radius R1 of the lower tension roller and it is described on
The radius R2 of jockey pulley is identical, and the second mandrel (16) of the upper tension roller (10) and each lower tension roller (12)
First mandrel (14) is parallel and is equidistant.
4. hot-rolled leveling unit according to claim 3, which is characterized in that described the of two lower tension rollers (12)
The distance between one mandrel (14) L0 meets:
2 (R1+R2) > L0 > 2R1.
5. hot-rolled leveling unit according to claim 4, which is characterized in that the roll surface of the upper tension roller (10) and two
The minimum range of datum plane apart defined by first mandrel (14) is first distance, under the upper tension roller (10)
Pressing distance L2 is the difference of the radius R1 of the first distance and the lower tension roller,
When the outlet tensioner is in the working condition for clamping the strip, the depression distance L2 is less than 0.
6. hot-rolled leveling unit according to claim 1, which is characterized in that the outlet tensioner includes for controlling
The distance between the upper tension roller (10) and the lower tension roller (12) position-limit mechanism.
7. hot-rolled leveling unit according to claim 6, which is characterized in that the position-limit mechanism includes and the cylinder
The coaxial mounted photoelectric encoder of output shaft, the photoelectric encoder measure the stroke of the output shaft.
8. hot-rolled leveling unit according to claim 1, which is characterized in that the exit bend roller (7) is batched with described
Pressure roller (9) are provided between machine (8).
9. a kind of method using any hot-rolled leveling unit processing strip of claim 1-8, which is characterized in that packet
It includes:
S1. adjust upper tension roller (10) separated with lower tension roller (12), make the strip from the upper tension roller (10) with it is described
Outlet tensioner (6) is passed through between lower tension roller (12)；
S2. the outlet tensioner (6) is measured at a distance from the magnetic tape trailer of the strip, is preset when the distance is less than or equal to
Distance keeps the upper tension roller (10) mobile towards the lower tension roller (12), to squeeze the strip.
10. the method for processing strip according to claim 9, which is characterized in that pass through the outlet in the strip
Before power device (6), the strip sequentially passes through uncoiler (1), straightener (3) and four-roller planisher (4), and
The strip successively passes through exit bend roller (7) and coiling machine (8) after passing through the outlet tensioner (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810958935.9A CN108941211A (en) | 2018-08-21 | 2018-08-21 | Hot-rolled leveling unit and the method for handling strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810958935.9A CN108941211A (en) | 2018-08-21 | 2018-08-21 | Hot-rolled leveling unit and the method for handling strip |
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| CN108941211A true CN108941211A (en) | 2018-12-07 |
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| CN201810958935.9A Pending CN108941211A (en) | 2018-08-21 | 2018-08-21 | Hot-rolled leveling unit and the method for handling strip |
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| CN109702019A (en) * | 2018-12-21 | 2019-05-03 | 首钢京唐钢铁联合有限责任公司 | A method of prevent high-strength steel cold roll uncoiling difficult |
| CN110314939A (en) * | 2019-07-15 | 2019-10-11 | 张家港宏昌钢板有限公司 | A kind of strip steel head levelling method carried out using skin pass mill group |
| CN111872157A (en) * | 2020-07-31 | 2020-11-03 | 中冶赛迪工程技术股份有限公司 | Tail forming device and method in strip steel coiling process |
| CN113458149A (en) * | 2020-03-31 | 2021-10-01 | 宝山钢铁股份有限公司 | Portable intelligent synchronous proximity control device and method for leveling wire inlet preparation station |
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| CN110314939B (en) * | 2019-07-15 | 2020-12-01 | 张家港宏昌钢板有限公司 | Strip steel head flattening method by utilizing flattening unit |
| CN113458149A (en) * | 2020-03-31 | 2021-10-01 | 宝山钢铁股份有限公司 | Portable intelligent synchronous proximity control device and method for leveling wire inlet preparation station |
| CN113458149B (en) * | 2020-03-31 | 2022-07-19 | 宝山钢铁股份有限公司 | Portable intelligent synchronous proximity control device and method for leveling wire inlet preparation station |
| CN111872157A (en) * | 2020-07-31 | 2020-11-03 | 中冶赛迪工程技术股份有限公司 | Tail forming device and method in strip steel coiling process |
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Application publication date: 20181207 |
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