CN106944479B - A kind of thin strip single chassis tandem mill and implementation method - Google Patents

A kind of thin strip single chassis tandem mill and implementation method Download PDF

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Publication number
CN106944479B
CN106944479B CN201710252752.0A CN201710252752A CN106944479B CN 106944479 B CN106944479 B CN 106944479B CN 201710252752 A CN201710252752 A CN 201710252752A CN 106944479 B CN106944479 B CN 106944479B
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roll
rolling
roller
loop
driving motor
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CN106944479A (en
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刘相华
王吉
赵启林
徐梓淦
张思佳
孙祥坤
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Northeastern University China
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Northeastern University China
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • 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
    • B21B37/46—Roll speed or drive motor control
    • 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
    • B21B37/48—Tension control; Compression control
    • B21B37/50—Tension control; Compression control by looper control
    • 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
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control
    • 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
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/02—Tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/12—Rolling load or rolling pressure; roll force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/02—Vertical deviation, e.g. slack, looper height

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

The present invention discloses a kind of thin strip single chassis tandem mill and implementation method, with the equal or unequal working roll of multiple diameters, including drive roll and passive guide roller, implement multi-pass asymmetrical rolling or asynchronous plus symmetric rolling by being controlled drive roll linear velocity, with the increase of rolling pass number, the linear velocity of each roll is sequentially increased along rolling direction, the last one passage can use asymmetrical rolling, can also use symmetric rolling；When using symmetric rolling, the roller diameter of last two rolls is equal, and roll linear velocity is equal.Beneficial effects of the present invention: multi-pass tandem rolling is realized in single chassis, bigger drafts may be implemented in a rolling process, improve the Rolling Production efficiency of strip in razor-thin；Reduce equipment investment and land occupation, while produce, run, maintenance cost is also accordingly reduced；The lateral stiffness of roll can be improved, rolled piece transverse gage deviation is small, and the strip shape quality of product can be improved.

Description

A kind of thin strip single chassis tandem mill and implementation method
Technical field
The invention belongs to plate sheet and strip technical fields, the list especially suitable for a kind of efficiently production strip and ultra-thin strip Frame tandem mill and its milling method.
Background technique
With the rise of the novel manufacturing such as micro manufacturing, micro electronmechanical, market is very urgent for the demand of ultra-thin strip. Metal, alloy, the ultra-thin strip majority that metal-base composites is material are obtained by Rolling Production currently on the market, and production is set Standby multi-purpose multi-roll mill.It is big as traditional multi-roll mill equipment investment of representative using Sendzimir 20 high mill, take up a large area, tie Structure is complicated, and production, operation, maintenance cost are high.Be limited to symmetric rolling minimum rolled thickness simultaneously, multi-roll mill roll thin ability compared with It is low, many passage repeat-rollings are usually required to obtain strip in razor-thin, cause the production efficiency of strip in razor-thin low, at high cost.Foreign countries were once Had the trial of multi-frame Sendzimir tandem mill, but because cost is too high, it is technical and it is extremely complex without obtain promote answer With.
Summary of the invention
According to the problems of prior art, roll that thin ability is strong, production passage is few the purpose of the present invention is to propose to one kind The asymmetrical rolling single chassis tandem mill and its milling method of ultra-thin strip can efficiently be produced.Specific technical solution is as follows:
A kind of thin strip single chassis tandem mill, including screwdown gear, memorial archway, roller system, multiple loops, multiple driving motors, Multiple tension motors and roll-separating mechanism, it is characterised in that: with the equal or unequal working roll of multiple diameters, including master Dynamic roller and passive guide roller, each drive roll one end is connected with driving motor by shaft coupling, universal-joint spindle, by drive roll line Speed is controlled to implement multi-pass asymmetrical rolling or asynchronous plus symmetric rolling, each to roll with the increase of rolling pass number The linear velocity of roller is sequentially increased along rolling direction, the last one passage can use asymmetrical rolling, can also use symmetric rolling； When using symmetric rolling, the roller diameter of last two rolls is equal, and roll transmission speed is equal；
Between two neighboring track time, equipped with the loop propped up by loop back roll, loop back roll is along perpendicular with memorial archway window Direction it is mobile, so that the band of outlet side is generated forward pull, the band of entrance side generates backward pull, and the size of tension value is according to work Skill needs to set, and adjusts the active force of hydraulic cylinder or gravity in real time according to the condition of production to control tension value；
Memorial archway can be horizontally arranged or be disposed vertically, and working roll is disposed in memorial archway window, can add branch as needed Roller is supportted, when using support roller, support roller plays a supporting role to the working roll at both ends at the working roll both ends of in-line arrangement；
Uncoiler and coiling machine are disposed with before and after memorial archway, band is sent into successively through uncoiler, guide roller by adjacent two Each roll gap that branch roll is constituted, is then wound through guide roller by coiling machine, rolled piece often passes through one of roll gap, completes a passage Rolling；
Multiple major diameter rolls, small diameter roller, size roll are spaced apart in the same plane, based on major diameter roll Dynamic roller, is driven by multiple driving motors respectively；Small diameter roller is passive guide roller；Milling train remaining part include screwdown gear, memorial archway, Multiple loops, multiple tension motors and roll-separating mechanism；
The major diameter roll and small diameter roller are placed in memorial archway window by bearing block, wherein diameter rollers broad in the middle Bearing block is fixed, remaining roll chock is slidably connected with memorial archway, balancing spring is respectively arranged between each roll chock, in memorial archway Rear and front end is equipped with screwdown gear, and rolling force sensor is equipped between screwdown gear and both ends roll chock；
The driving motor passes through shaft coupling respectively, universal-joint spindle is connected with major diameter roll one end, and driving motor is split In memorial archway two sides, the connected driving motor of both ends of them major diameter roll is placed in the same side, and diameter rollers broad in the middle are even driven Motor is placed in the other side；
The loop is placed in below memorial archway and above memorial archway, and loop is made of loop back roll and hydraulic cylinder, acts on loop back roll On active force controlled by hydraulic cylinder, to control the size of tension between passage, the stroke of hydraulic cylinder is not less than loop back roll Moving distance；Each loop is equipped with limit sensors up and down, prevents loop no to scale；Each hydraulic cylinder is equipped with a pressure Force snesor, for measuring tension between passage；
Distance is moved up and down to control loop back roll by adjusting the revolving speed of adjacent two rolls, and then controls loop length； Loop moving range is controlled by the limit sensors being mounted on loop, and control strategy is as follows:
1) when loop length is close allows minimum value, slow down downstream roll revolving speed, or accelerate upstream roll revolving speed；
2) when loop length is close allows maximum value, accelerate downstream roll revolving speed, or slow down upstream roll revolving speed；
3) while any a pair roller has carried out revolving speed adjustment, according to second flow equal principle, to remaining roller group into Row cascade speed regulation；
The screwdown gear is realized using hydraulic cylinder；
The milling train further includes uncoiler and coiling machine and guide roller, measurement roller and calibrator, and two measure the one of roller End is mounted on encoder, for measuring the entrance velocity and muzzle velocity of rolled piece；Two measurement roller support bottoms, which are equipped with, opens Force snesor is for measuring interstand tension；It is equipped with calibrator in the entrance of rolled piece and exit, is being worked as monitoring rolled piece The thickness change of preceding rolling process；The effect of two guide rollers is to guarantee that the cornerite of measurement roller is remained unchanged in coil diameter variation；
Each rolling force sensor signal outlet terminal, each cylinder pressure sensor signal outlet terminal, each tension Sensor signal outlet terminal, each limit sensors signal outlet terminal, each code device signal outlet terminal, each calibrator letter Number outlet terminal, each hydraulic cylinder control terminal, each driving motor control terminal, each tension motor control terminal with main control computer phase Even.
Milling train can select n working roll, 3≤n≤7 as needed；Wherein there is i drive roll, (n-1)/2≤i≤n；n-i A passive guide roller.
Rolled piece is snakelike in each roll gap to be passed through, and after often passing through one of roll gap, need to be entered around corresponding loop back roll lower one Roll gap；When milling train is by n roller position roll system, the rolling of n-1 passage can be carried out in a rolling process, wherein odd-numbered pass and even number road Secondary rolling direction is opposite.
Each loop control device is constant by tension, loop range internal tension between hydraulic cylinder offer passage；
With the increase of rolling pass number, the linear velocity of each roll is sequentially increased along rolling direction, the last one passage Asymmetrical rolling can be used, symmetric rolling can also be used；When using symmetric rolling, the roller diameter of last two rolls is equal, rolls The equal of roller transmission speed
The present invention further discloses the thin strip single chassis tandem mill implementation method, specific implementation step is as follows:
Step 1: unclamping screwdown gear, and each working roll, in maximum Roll-gap position, first will under the action of balancing spring Rolled piece is placed on reel, then by the rolled piece other end pass through guide roller, measurement roller, sequence be sent into first, second, third road, 4th roll gap, rolled piece bypass corresponding loop back roll into lower one of roll gap, so successively around in board after often passing through one of roll gap Loop back roll below mill and above memorial archway most draws afterwards through measurement roller, guide roller, rolled piece end is wrapped on coiling machine, turns Rolled piece is tentatively tensioned by dynamic uncoiler and coiling machine；
Step 2: starting main control computer applies roll-force to each working roll respectively by screwdown gear, monitors by rolling The roll-force size that force snesor is fed back, until adjusting roll-force to setting value；
Step 3: goal tension is applied to rolled piece by first hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder；
Step 4: starting the first driving motor, the second driving motor, third driving motor, according to required mill speed, choosing Select motor speed, it is generally the case that the revolving speed of three major diameter working rolls is sequentially increased along rolling direction, realizes asymmetrical rolling, Friction speed between three major diameter working roll rollers can be adjusted in real time than size according to practical condition；
Step 5: first is controlled by the revolving speed of the first driving motor of control, the second driving motor, third driving motor Loop back roll, two loop back rolls, third loop back roll move up and down position, and then adjusts the loop amount between each passage, makes asynchronous list Rack tandem rolling, which is stablized, to carry out；
Step 6: before the rolling of one group of four passage of coiled strip that is near completion, gradually reduce the first driving motor, Second driving motor, third driving motor revolving speed until shut down；
Step 7: computer is checked whether by calibrator as final rolling process, if not arriving final rolling process, the first transmission Motor, the second driving motor, third driving motor enter rollback routine, and former uncoiler becomes coiling machine, and former coiling machine becomes out Volume machine, repeats step 2, into the rolling of next four passages of rolling process；
Step 8: if completing the last one rolling process, tension between passage being unloaded, and screwdown gear unloads roll-force, is rolled Process processed terminates.
Beneficial effects of the present invention:
1, multi-pass tandem rolling is realized in single chassis, bigger drafts may be implemented in a rolling process, improves strip in razor-thin Rolling Production efficiency；
2, multi-pass tandem rolling is realized in single chassis, reduces equipment investment and land occupation, while producing, running, maintenance expense It is reduced with also corresponding；
3, due to supporting each other between roll, the transverse elasticity deformation of roll is restricted the present invention, and roll can be improved Lateral stiffness, rolled piece transverse gage deviation is small, and the strip shape quality of product can be improved.
4, the present invention uses using reducing and friction speed as asymmetrical and carries out asymmetrical rolling, and roll-force can be greatly reduced, drop Low equipment requirement and maintenance cost；
5, the present invention breaches the symmetric rolling minimum rolled thickness limit compared with traditional multi-roll mill, has stronger Thin ability is rolled, thinner rolled piece can be obtained under the same terms；
Detailed description of the invention
Fig. 1 is roller system, rolled piece, rolling pass relation schematic diagram；
Fig. 2 is memorial archway and roll system structure schematic diagram；
Fig. 3 is the top view of 5 roller asymmetrical rolling milling train of single chassis reducing；
Fig. 4 is the front view of 5 roller asymmetrical rolling milling train of single chassis reducing；
Wherein, 1-memorial archway, 2-major diameter rolls, 3-small diameter rollers, 4-major diameter roll chocks, 5-is small straight Diameter roll chock, 6-rolling force sensors, 7-balancing springs, 8-hydraulic cylinder for reduction system, 9-roll balance gears, 10-is high Pressure oil inlet port, the 11-the first tension motor, the 12-the second tension motor, the 13-the first reel, the 14-the second reel, 15-lead To roller, 16-measurement rollers, 17-tension sensors, 18-encoders, the 19-the first driving motor, the 20-the second driving motor, 21-third driving motors, 22-universal-joint spindles, 23-shaft couplings, 24-speed reducers, 25-rolled pieces, 26-pedestals, 27-the One hydraulic cylinder, 28-second hydraulic cylinders, 29-third hydraulic cylinders, the 30-the first loop back roll, the 31-the second loop back roll, 32-thirds Loop back roll, 33-calibrators, 34-limit sensors.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
Five roller asymmetrical rolling milling train of single chassis reducing, wherein totally three, major diameter roll 2, small diameter roller 3 totally two, greatly Small roll is spaced apart in the same plane, and three major diameter rolls 2 are drive roll, is driven respectively by three driving motors；Two A small diameter roller 3 is passive guide roller.Milling train remaining part includes: screwdown gear 8, memorial archway 1, the first driving motor 19, second biography Dynamic motor 20, third driving motor 21, the first tension motor 11, the second tension motor 12 and the first, second, third loop dress It sets.
The memorial archway 1 is using being horizontally arranged, wherein three major diameter rolls 2 and two small diameter rollers 3 are in a manner of Fig. 2 It is placed in 1 window of memorial archway by major diameter roll chock 4 and small diameter roller bearing block 5 respectively, wherein intermediate major diameter is rolled Roll bearing seat 4 is fixed, remaining roll chock is slidably connected with memorial archway, and balancing spring 7 is respectively arranged between each roll chock, Memorial archway rear and front end is equipped with screwdown gear 8, and rolling force sensor 6 is equipped between screwdown gear 8 and both ends roll chock.
Three driving motors pass through universal-joint spindle 22, shaft coupling 23, speed reducer 24 and three major diameter rolls respectively One end is connected, and driving motor is placed in 1 two sides of memorial archway, wherein the first driving motor 19 be placed in third driving motor 21 it is same Side, the second driving motor 20 are placed in the other side.
First looper is made of first hydraulic cylinder 27 and the first loop back roll 30, and the second looper is by the second liquid Cylinder pressure 28 and the second loop back roll 31 form, and third looper is made of third hydraulic cylinder 29 and third loop back roll 32, and first is living Covering device, third looper are placed in 1 lower section of memorial archway, and the second looper is placed in 1 top of memorial archway, acts on the work on loop back roll Firmly controlled by hydraulic cylinder, to control the size of tension between passage, the stroke of hydraulic cylinder not less than loop back roll movement away from From；Each hydraulic cylinder is equipped with a pressure sensor, for measuring tension between passage.
Distance is moved up and down to control loop back roll by adjusting the revolving speed of adjacent two rolls, and then controls loop length； Loop moving range is controlled by the limit sensors 34 being mounted on loop, and control strategy is as follows:
1) when loop length is close allows minimum value, slow down downstream roll revolving speed, or accelerate upstream roll revolving speed；
2) when loop length is close allows maximum value, accelerate downstream roll revolving speed, or slow down upstream roll revolving speed；
3) while any a pair roller has carried out revolving speed adjustment, according to second flow equal principle, to remaining roller group into Row cascade speed regulation；
The screwdown gear is realized using hydraulic cylinder for reduction system 8.
The single chassis tandem mill is equipped with uncoiler and coiling machine and guide roller and measurement roller, and uncoiler is by the first tension Motor 11 and the first reel 13 composition, coiling machine are made of the second tension motor 12 and the second reel 14, and two measure roller 16 One end is mounted on encoder 18, for measuring the entrance velocity and muzzle velocity of rolled piece 25；Two measurement roller support bottoms are equal Equipped with tension sensor 17 for measuring interstand tension.It is equipped with calibrator 33 in the entrance of rolled piece and exit, for supervising Thickness change of the controlled rolling part 25 in current rolling process.The effect of two guide rollers 15 is to guarantee that the cornerite of measurement roller 16 changes in coil diameter When remain unchanged.
Band is sent into each roll gap being made of adjacent two rolls through uncoiler, guide roller successively, then through guide roller It is wound by coiling machine, rolled piece often passes through one of roll gap, the rolling of a passage is completed, all by being made of n working roll When roller system, the rolling of n-1 can be carried out, wherein odd-numbered pass is opposite with the rolling direction of even-numbered pass；
Outlet rolled piece length velocity relation between each rolling pass of single chassis tandem mill is as follows:
VH<Vh1<Vh2<…<Vhn-1=Vh (1)
The setting linear velocity relationship of each drive roll is as follows:
V1<V2<…<Vi-1≤Vi (2)
Wherein: VHFor milling train the first passage entrance velocity, VhFor the last a time muzzle velocity of rolled piece, subscript table in formula (1) Show that rolling pass, formula (2) subscript indicate each drive roll along rolling direction number consecutively.
When (2) formula right end takes equal sign, indicate that the last one rolling pass using symmetric rolling, typically serves to smooth work With.
The deformation of single chassis tandem mill is as follows:
μ=μ1·μ2…μn-1=H/h (4)
Wherein Δ hjAnd μjThe respectively drafts and lengthening coefficient of jth passage, Δ h and μ are respectively overall reduction and always prolong Coefficient is stretched, H and h are respectively the thickness of raw material and finished product.Roller system, band, relationship such as Fig. 1 between rolling pass
The 6 signal outlet terminal of rolling force sensor, cylinder pressure sensor signal outlet terminal, tension sensor 17 signal outlet terminals, 34 signal outlet terminal of each limit sensors, 18 signal outlet terminal of each encoder, each calibrator 33 Signal outlet terminal, each hydraulic cylinder control terminal, each driving motor control terminal are connected with main control computer.
Rolled piece 20 in the present embodiment is Q195 steel strip, and the original depth of rolled piece 25 is 0.1mm, width 50mm, greatly 2 diameter of diameter work roller is 120mm, and barrel length 120mm, 3 diameter of minor diameter working roll is 50mm, and barrel length is 130mm.25 target thickness of rolled piece is 0.005mm or less.
Step 1: unclamping screwdown gear 8, and each working roll is in maximum Roll-gap position under the action of balancing spring 7, first Rolled piece 25 is placed on the first reel 13, then 25 other end of rolled piece is passed through into guide roller 15, measurement roller 16, sequence is sent into first Road, second, third road, the 4th roll gap, rolled piece 25 is often by entering lower one of roller after one of roll gap around corresponding loop back roll Seam so successively bypasses the first loop back roll 30, the second loop back roll 31, third loop back roll 32, most measures roller through 1 other end of memorial archway afterwards 16, guide roller 15 is drawn, and 25 end of rolled piece is wrapped on the second reel 14, rotates uncoiler and coiling machine rolled piece 25 is preliminary Tensioning；
Step 2: starting main control computer applies roll-force to each working roll respectively by screwdown gear, monitors by rolling The roll-force size that force snesor 6 is fed back, until adjusting roll-force to P1、P2；
Step 3: T is applied to rolled piece 25 by the first tension motor 11bBackward pull, it is right by the second tension motor 12 Rolled piece 25 applies TfForward pull, rolled piece 25 is applied respectively by first hydraulic cylinder 27, second hydraulic cylinder 28, third hydraulic cylinder 29 Add T1、T2、T3Goal tension；
Step 4: starting the first driving motor 19, the second driving motor 20, third driving motor 21, according to required rolling Speed selects motor speed, keeps the revolving speed n of the first driving motor 191, the second driving motor 20 revolving speed n2, third transmission electricity The revolving speed n of machine 213Ratio are as follows: n1:n2:n3=1:1.3:1.69, to realize that asymmetrical rolling, friction speed can be according to reality than size The condition of production is adjusted in real time；
Step 5: it is fed back according to tension sensor on the first loop back roll 30, the second loop back roll 31, third loop back roll 32 Tensity size between passage is controlled by the revolving speed of the first driving motor 19 of control, the second driving motor 20, third driving motor 21 Make the first loop back roll 30, the second loop back roll 31, third loop back roll 32 and move up and down position, so by first hydraulic cylinder 27, Second hydraulic cylinder 28, third hydraulic cylinder 29 adjust the loop amount between passage, stablize asynchronous single chassis tandem rolling and carry out；
Step 6: between the rolling of a roll of 25 1 groups of four passages of milling train that is near completion, the first transmission electricity is gradually reduced Machine 19, the second driving motor 20, third driving motor 21 revolving speed until shut down；
Step 7: being checked whether by calibrator as final rolling process, if not arriving final rolling, the first driving motor 19, the second driving motor 20, third driving motor 21 enter rollback routine, and former uncoiler becomes coiling machine, and former coiling machine becomes Uncoiler repeats step 2 and adjusts corresponding rolling parameter, into the rolling of next four passages of rolling process；
Step 8: hydraulic by first hydraulic cylinder 27, second hydraulic cylinder 28, third if completing the last one rolling process Cylinder 29 is mobile to unload tension between passage to memorial archway 1 by the first loop back roll roller 30, the second loop back roll 31, third loop back roll 32, presses Lower device 8 unloads roll-force, and the operation of rolling terminates.
The scope of patent protection that scheme in embodiment is not intended to limit the invention, it is all without departing from carried out by the present invention etc. Effect implements or change, is both contained in the scope of the patents of this case.

Claims (5)

1. a kind of thin strip single chassis tandem mill, including it is screwdown gear, memorial archway, roller system, multiple loops, multiple driving motors, more A tension motor and roll-separating mechanism, it is characterised in that: there are multiple unequal working rolls, including drive roll and passive Roller, major diameter roll are drive roll, and small diameter roller is passive guide roller, and each drive roll one end passes through shaft coupling with driving motor Device, universal-joint spindle are connected, implemented by control drive roll linear velocity multi-pass asymmetrical rolling or it is asynchronous add synchronize and roll System, with the increase of rolling pass number, the linear velocity of each roll is sequentially increased along rolling direction, the last one passage can adopt With asymmetrical rolling, symmetric rolling can also be used；When using symmetric rolling, the roller diameter of last two rolls is equal, roll transmission Speed is equal；
Between two neighboring track time, equipped with the loop propped up by loop back roll, loop back roll is along the side perpendicular with memorial archway window To movement, the band of outlet side is made to generate forward pull, the band of entrance side generates backward pull, and the size of tension value is according to technique need It sets, and the active force of hydraulic cylinder is adjusted in real time to control tension value according to the condition of production；
Memorial archway is horizontal positioned, and working roll is disposed in memorial archway window, can extension supporting roller as needed, when using support roller, branch Roller is supportted at the working roll both ends of in-line arrangement, is played a supporting role to the working roll at both ends；
Uncoiler and coiling machine are disposed with before and after memorial archway, band is sent into successively through uncoiler, guide roller to be rolled by adjacent two Each roll gap that roller is constituted, is then wound through guide roller by coiling machine, rolled piece often passes through one of roll gap, completes rolling for a passage System；
Multiple major diameter rolls, small diameter roller, size roll are spaced apart in the same plane, and major diameter roll is actively Roller is driven by multiple driving motors respectively；Small diameter roller is passive guide roller；Milling train remaining part includes screwdown gear, memorial archway, more A loop, multiple tension motors and roll-separating mechanism；
The major diameter roll and small diameter roller are placed in memorial archway window by bearing block, wherein diameter rollers bearing broad in the middle Seat is fixed, remaining roll chock is slidably connected with memorial archway, balancing spring is respectively arranged between each roll chock, before and after memorial archway Both ends are equipped with screwdown gear, and rolling force sensor is equipped between screwdown gear and both ends roll chock；
The driving motor passes through shaft coupling respectively, universal-joint spindle is connected with major diameter roll one end, and driving motor is placed in board Mill two sides, the connected driving motor of both ends of them major diameter roll are placed in the same side, the connected driving motor of diameter rollers broad in the middle It is placed in the other side；
The loop is placed in below memorial archway and above memorial archway, and loop is made of loop back roll and hydraulic cylinder, acts on loop back roll Active force is controlled by hydraulic cylinder, to control the size of tension between passage, the stroke of hydraulic cylinder is not less than the movement of loop back roll Distance；Each loop is equipped with limit sensors up and down, prevents loop no to scale；Each hydraulic cylinder is equipped with a pressure and passes Sensor, for measuring tension between passage；
Distance is moved up and down to control loop back roll by adjusting the revolving speed of adjacent two rolls, and then controls loop length；Loop Moving range is controlled by the limit sensors being mounted on loop, and control strategy is as follows:
1) when loop length is close allows minimum value, slow down downstream roll revolving speed, or accelerate upstream roll revolving speed；
2) when loop length is close allows maximum value, accelerate downstream roll revolving speed, or slow down upstream roll revolving speed；
3) while any a pair roller has carried out revolving speed adjustment, according to second flow equal principle, grade is carried out to remaining roller group Joint debugging speed；
The screwdown gear is realized using hydraulic cylinder；
The milling train further includes uncoiler and coiling machine and guide roller, measurement roller and calibrator, and one end of two measurement rollers is equal Encoder is installed, for measuring the entrance velocity and muzzle velocity of rolled piece；Two measurement roller support bottoms are all provided with tensioned biography Sensor is for measuring interstand tension；It is equipped with calibrator in the entrance of rolled piece and exit, is rolled for monitoring rolled piece currently The thickness change of journey；The effect of two guide rollers is to guarantee that the cornerite of measurement roller is remained unchanged in coil diameter variation；
Each rolling force sensor signal outlet terminal, each cylinder pressure sensor signal outlet terminal, each tension sensing Device signal outlet terminal, each limit sensors signal outlet terminal, each code device signal outlet terminal, each calibrator signal are defeated Terminal, each hydraulic cylinder control terminal, each driving motor control terminal, each tension motor control terminal are connected with main control computer out.
2. thin strip single chassis tandem mill according to claim 1, it is characterised in that: milling train can select n as needed Working roll, 3≤n≤7；Wherein there is i drive roll, (n-1)/2≤i≤n；N-i passive guide roller.
3. thin strip single chassis tandem mill according to claim 1, it is characterised in that: rolled piece is snakelike in each roll gap to be worn It crosses, after often passing through one of roll gap, lower one of roll gap need to be entered around corresponding loop back roll；When milling train is by n roller position roll system, one The rolling of n-1 passage can be carried out in rolling process, wherein odd-numbered pass is opposite with the rolling direction of even-numbered pass.
4. thin strip single chassis tandem mill according to claim 1, it is characterised in that: each loop control device passes through hydraulic Cylinder provides tension between passage, and loop range internal tension is constant；
With the increase of rolling pass number, the linear velocity of each roll is sequentially increased along rolling direction, the last one passage can be with Using asymmetrical rolling, symmetric rolling can also be used；When using symmetric rolling, the roller diameter of last two rolls is equal, and roll passes Dynamic speed is equal.
5. a kind of application method of thin strip single chassis tandem mill according to claim 1, it is characterised in that it is specific real Apply that steps are as follows:
Step 1: screwdown gear is unclamped, each working roll is in maximum Roll-gap position under the action of balancing spring, first by rolled piece It is placed on reel, then the rolled piece other end is passed through into guide roller, measurement roller, sequence is sent into first, second, third road, the 4th Road roll gap, rolled piece bypass corresponding loop back roll into lower one of roll gap, so successively around under memorial archway after often passing through one of roll gap Loop back roll above side and memorial archway is most drawn afterwards through measurement roller, guide roller, rolled piece end is wrapped on coiling machine, rotation is opened Rolled piece is tentatively tensioned by volume machine and coiling machine；
Step 2: starting main control computer applies roll-force to each working roll respectively by screwdown gear, and monitoring is passed by roll-force The roll-force size that sensor is fed back, until adjusting roll-force to setting value；
Step 3: goal tension is applied to rolled piece by first hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder；
Step 4: starting the first driving motor, the second driving motor, third driving motor, according to required mill speed, selection electricity The revolving speed of machine revolving speed, three major diameter working rolls is sequentially increased along rolling direction, realizes asymmetrical rolling, three major diameter working rolls Friction speed between roller can be adjusted in real time than size according to practical condition；
Step 5: the first loop is controlled by the revolving speed of the first driving motor of control, the second driving motor, third driving motor Roller, the second loop back roll, third loop back roll move up and down position, and then adjusts the loop amount between each passage, makes asynchronous single machine Frame tandem rolling, which is stablized, to carry out；
Step 6: before the rolling of one group of four passage of coiled strip that is near completion, the first driving motor, second are gradually reduced Driving motor, third driving motor revolving speed until shut down；
Step 7: computer is checked whether by calibrator as final rolling process, if not arriving final rolling process, the first transmission electricity Machine, the second driving motor, third driving motor enter rollback routine, and former uncoiler becomes coiling machine, and former coiling machine becomes uncoiling Machine repeats step 2, into the rolling of next four passages of rolling process；
Step 8: if completing the last one rolling process, tension between passage being unloaded, and screwdown gear unloads roll-force, was rolled Journey terminates.
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