CN103962378B - The independent changing rig of intermediate calender rolls in one - Google Patents
The independent changing rig of intermediate calender rolls in one Download PDFInfo
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Abstract
The present invention relates to a kind of upper independent changing rig of intermediate calender rolls, be applicable to pony roll footpath six-high cluster mill, described pony roll footpath six-high cluster mill comprises working roll, intermediate calender rolls, backing roll, wherein, top backing up roll, upper intermediate calender rolls, top working roll, bottom working roll, lower intermediate calender rolls and lower support roll are arranged in order from top to bottom and are supported on respective bearing block respectively by swivel bearing; Each backing roll of upper and lower, intermediate calender rolls, working roll are respectively relative to roll line axial symmetry separately; The each axle head of each intermediate calender rolls arranges intermediate calender rolls roll bending and shifting roller arrangement, and backing roll bascule and roll gap regulation hydraulic cylinder are positioned at frame bottom; Frame central line is vertically positioned at frame central; Upper intermediate calender rolls arranges independent changing rig, in certain upper intermediate calender rolls and top working roll design gaps, arranges independent changing rig make upper intermediate calender rolls can successfully realize independent roller replacing operation by upper intermediate calender rolls.
Description
Technical field
The present invention relates to a kind of upper independent changing rig of intermediate calender rolls, be applicable to pony roll footpath six-high cluster mill.
Technical background
Six-high cluster mill is a kind of board rolling mainstream model of technology maturation, has the advantage that output is high, end product quality is high, consumption is less, device fabrication difficulty is less and maintenance is less.Its primary structure as shown in Figure 1, comprises rolling line adjusting device 101, top backing up roll 102, upper intermediate calender rolls 103, intermediate calender rolls roll bending and shifting roller arrangement 104, top working roll 105, working roller bending hydraulic cylinder 106, work roll bending block 107, bottom working roll 108, lower intermediate calender rolls 109, frame 110, lower support roll 111 and roll gap regulation hydraulic cylinder 112.Rolling line adjusting device 101 is for adjusting height of rolling line.Intermediate calender rolls roll bending and shifting roller arrangement 104 is for adjusting plate shape.Working roller bending hydraulic cylinder 106 is for adjusting plate shape.Roll gap regulation hydraulic cylinder 112 is for adjusting rolled piece exit thickness.But the six-roll cold mill working roll of routine can not do too little, the footpath (barrel diameter) wide (strip width) of its working roll is not less than 0.25 than generally, be difficult to be competent at when band steel as middle high grade silicon steel, stainless steel, high-strength steel and Ultra-thin of the material of rolling high drag, this adopts multi-roll mill rolling often, and typical type is 20 roller mills and 18 roller mills.Compared with six-high cluster mill, multi-roll mill have mill speed low, yield poorly, cost is high, consumption is large, troublesome poeration, equipment are complicated, manufacture difficulty is large and maintenance is large shortcoming, if six-high cluster mill rolling can be adopted, obvious economic benefit will be had.
With six-high cluster mill rolling above-mentioned material, working roll roller footpath significantly need be reduced.Conventional six-high cluster mill top working roll 105, bottom working roll 108, top backing up roll 102 and lower backing roll 111 are positioned at framework window center, the rotation centerline of above-mentioned 4 rollers overlaps in the horizontal direction, the rotation centerline of upper intermediate calender rolls 103 and lower intermediate calender rolls 109 overlaps in the horizontal direction, and relative to top working roll 105, bottom working roll 108, the rotation centerline of top backing up roll 102 and lower support roll 111 is designed with an eccentric throw, under this wobbler action, breaker roll is produced horizontal component by roll-force, to eliminate the gap between roll chock and frame, ensure the position stability of roller system during rolling.This eccentric force is very large, for the six-high cluster mill of working roll transmission, is the chief component of working roll horizontal force.Under the effect of working roll body of roll horizontal force, the reduction in roller footpath brings the increasing of its horizontal amount of deflection, and then production board shape is worsened.
In prior art, certain company adopts and adds wedge at both sides work roll bending block and to push the work forward the bearing block of roller, thus working roll is moved along rolling direction, realizes the change of eccentric throw to reduce the horizontal force on working roll.But there is the problem of the following aspects in this scheme: first, consider fuel factor in the operation of rolling, can thermal expansion be there is in working roll and parts thereof, and workroll bearing both sides roller bending block is rigid support, so generally leave the gap of 0.2-0.5mm between working roll bearing block and adjacent roller bending block.In real work, working roll bearing block non-fully folder is dead, the size of its horizontal force is also measured.Thus, the size of eccentric throw amount of movement cannot be revised by theory calculate completely, and the size of working roll horizontal force is also difficult to accurate control.The second, under the operating mode described in Article 1, leaning against that predetermined side of design to ensure that working roll bearing block is stablized, certain horizontal force surplus effect need be stayed this theoretical level power can not to be set as zero on the work rolls.Because the principal element upper and lower roll roll torque producing upper and lower work body of roll horizontal force is different, therefore the horizontal force of two rollers is different, and two rollers move simultaneously, the amount of moving horizontally is identical, upper and lower roll can only be taken into account, therefore have to strengthen above-mentioned horizontal force surplus, body of roll horizontal force can not be reduced in amplitude peak ground.Like this, the roller footpath of working roll just can not be done very little.
Because this mill rolls footpath is less, and introduce the technology of moving horizontally, both superpose mutually, and how making this milling train in limited space, carry out complete arrangement is a more scabrous problem, and thus, also the change of corresponding apparatus served by band.
Summary of the invention
The object of the invention is for above not enough and shortcoming, providing a set of working roll can move horizontally, and horizontal force can accurately control and the less pony roll footpath six-high cluster mill of the horizontal amount of deflection of working roll.
On this basis, the technical problem that the present invention will solve further is: provide a kind of upper independent changing rig of intermediate calender rolls, be applicable to pony roll footpath six-high cluster mill.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The independent changing rig of intermediate calender rolls in one, be applicable to pony roll footpath six-high cluster mill, described pony roll footpath six-high cluster mill comprises working roll, intermediate calender rolls, backing roll, wherein, top backing up roll, upper intermediate calender rolls, top working roll, bottom working roll, lower intermediate calender rolls and lower support roll are arranged in order from top to bottom and are supported on respective bearing block respectively by swivel bearing; Each backing roll of upper and lower, intermediate calender rolls, working roll are respectively relative to roll line axial symmetry separately; The each axle head of each intermediate calender rolls arranges intermediate calender rolls roll bending and shifting roller arrangement, and backing roll bascule and roll gap regulation hydraulic cylinder are positioned at frame bottom; Frame central line is vertically positioned at frame central;
It is characterized in that: top backing up roll, lower support roll, upper intermediate calender rolls and lower intermediate calender rolls center line are separately positioned on same perpendicular with frame central line all the time;
In the horizontal direction, each axle head left and right sides of each working roll sets gradually working-roller bending device by shaft centre line toward both sides and roller bending block fixed by working roll, and horizontal gapless between roller bending block and each working roll bearing block fixed by working roll; Working roll both sides working roll is fixed roller bending block place and is arranged all in the horizontal direction and move horizontally adjusting device, describedly move horizontally the horizontal eccentric throw and oppositely movement that adjusting device is set to exist according to working roll center line and frame central line, make working roll center line and frame central line be positioned on same perpendicular; Top working roll and the bottom working roll left and right sides separately all arranges a working roll and fixes roller bending block; Or top working roll and bottom working roll arrange a shared working roll at homonymy and fix roller bending block;
Upper intermediate calender rolls arranges independent changing rig, comprise the first roll change oil cylinder and the second roll change oil cylinder that two piston rods all vertically arrange upward, first roll change oil cylinder and the second roll change oil cylinder are fixed on middle roll bending roll-shifting device, and the first roll change oil cylinder is positioned at the outside away from upper intermediate calender rolls; Intermediate calender rolls roll bending and shifting roller arrangement is horizontally disposed with in left-right direction a trapped orbit; The piston rod top of the first roll change oil cylinder arrange one parallel with trapped orbit and be positioned at the movable rail of same perpendicular, can with the roller contact in upper middle roll bearing seat when movable rail rises; The limit level altitude that trapped orbit height and movable rail vertically rise is concordant.
In technique scheme, described in move horizontally adjusting device be one of following two kinds of forms:
(1) left side of each axle head of working roll is also provided with left side Cam device, and left side Cam device comprises a wedge plate, the arranged outside piston rod of wedge plate can along the first translation oil cylinder of working roll center line movement; Wedge plate has the vertical wedge plate inclined-plane becoming angle with working roll shaft centre line; On the left of each axle head, the fixing roller bending block inclined-plane that roller bending block has a vertical setting fixed by working roll, wedge plate inclined-plane and this fixing roller bending block inclined-plane match, and merge can relative sliding, wedge plate inclined-plane move along this fixing roller bending block inclined-plane under the first translation oil cylinder effect and promote left side working roll fix roller bending block near working roll bearing block and the direction of impeller-hub bearing move; The right side of each axle head of working roll, the vertical section that roller bending block fixed by right side working roll is a plane parallel with working roll shaft centre line; Right side working roll is fixed on roller bending block and is arranged the second translation oil cylinder, can promote during the second phorogenesis right side working roll fixed bend roller arrangement near working roll bearing block and the direction of impeller-hub bearing move; Right side working roll is fixed on roller bending block and is arranged horizontally-guided bar along promoting oil cylinder action direction, and guide post termination is connected with right side working roll fixed bend roller arrangement; Working roll to be fixed on roller bending block inclined-plane level in left-right direction and is stretched out and be fixedly installed push rod, and push rod external part inclined-plane arranges and coordinates with wedge plate inclined-plane; Wedge plate and frame joint arrange load cell;
(2) working roll of working roll both sides is fixed roller bending block center and is all arranged horizontal counterbore, fills in movable grip block in horizontal counterbore; Middle cardiac prominence axle one end of movable grip block is stretched in horizontal counterbore and middle cardiac prominence axle is horizontally disposed with axis through-hole, and the middle cardiac prominence axle other end of movable grip block arranges and extends out boss, and the outer face and the working roll bearing block that extend out boss are adjacent; The inner face extending out boss is fixed roller bending block end face vertical with working roll and is coordinated; The working roll of side is fixed in roller bending block central horizontal counterbore and is arranged servo-cylinder, and the working roll of opposite side is fixed in roller bending block central horizontal counterbore and arranged horizontal hydraulic cylinder; The piston rod of servo-cylinder and hydraulic cylinder is all fixed on the movable grip block outer face adjacent with bearing block through respective movable grip block axis through-hole; The periphery of horizontal counterbore, movable grip block and working roll fix that roller bending block is corresponding arranges four guiding counterbores parallel with horizontal counterbore, horizontally-guided bar one end contacts with guiding counterbore dilapidated walls, and the other end passes guiding counterbore and is fixed on the movable grip block outer face adjacent with bearing block; The outer face that guide post external part in the piston rod of servo-cylinder and horizontal hydraulic cylinder and each guiding counterbore is all adjacent with movable grip block and bearing block is mutually concordant; One end that piston rod is connected with movable grip block with guide post is provided with screw thread, guide post and piston rod is fixed together with left side activity grip block respectively by nut; Between movable grip block axis through-hole and each piston rod, oil cylinder sliding sleeve is set, between guiding counterbore and respective guide post, guide post sliding sleeve is set; Horizontal hydraulic cylinder pressure is set to fixed value, and servo-cylinder is set to according to the horizontal off set action between working roll and frame central line that the roller that pushes the work forward moves horizontally.
In technique scheme, guide post vertically arranges and passes movable rail, is vertically led when movable rail is risen by guide post.
The control method for rolling that above-mentioned pony roll footpath six-high cluster mill moves horizontally based on working roll, is characterized in that comprising the steps:
(1) when rolling starts, according to Roll tensioning treatment and rolling procedure, set horizontal force as target with what point to wedge plate, calculate the eccentric throw size of required working roll, then the pre-set value of this eccentric throw as the operation of rolling is mated;
(2) complete the control of the first translation oil cylinder and the second translation oil cylinder according to eccentric throw pre-set value, thus realize top working roll and bottom working roll and fix along band steel direction, very close to each other;
(3) in the operation of rolling, roller system stablizes, and load cell can obtain the pressure of wedge plate and frame joint in side, and then can obtain the active force on wedge plate; The active force of the second translation oil cylinder can be obtained according to oil cylinder working-pressure size, now can be acted on the horizontal force of top working roll and bottom working roll by the equilibrium principle of power;
If horizontal force is in setting range, then pre-set value is reasonable, no longer regulates; If horizontal force is not within the scope of pre-set value, the horizontal direction of then carrying out top working roll and bottom working roll according to rolling operating mode and rolling procedure moves, thus make horizontal force control in setting range, reach the effect of accurate level of control power, to ensure that there is in the operation of rolling good Strip Shape Control state;
When there is thermal expansion effects in the operation of rolling, owing to all adopting the second translation oil cylinder to clamp on the right side of working roll and bottom working roll, in oil circuit controls, adopting overflow, making the second translation oil cylinder energy horizontal float under thermal expansion effects effect; The parts that elimination thermal expansion effects brings damage accordingly.
In technique scheme, the working roll of working roll both sides is fixed roller bending block center and is all arranged horizontal counterbore, fills in movable grip block in horizontal counterbore; Middle cardiac prominence axle one end of movable grip block is stretched in horizontal counterbore and middle cardiac prominence axle is horizontally disposed with axis through-hole, and the middle cardiac prominence axle other end of movable grip block arranges and extends out boss, and the outer face and the working roll bearing block that extend out boss are adjacent; The inner face extending out boss is fixed roller bending block end face vertical with working roll and is coordinated; The working roll of side is fixed in roller bending block central horizontal counterbore and is arranged servo-cylinder, and the working roll of opposite side is fixed in roller bending block central horizontal counterbore and arranged horizontal hydraulic cylinder; The piston rod of servo-cylinder and hydraulic cylinder is all fixed on the movable grip block outer face adjacent with bearing block through respective movable grip block axis through-hole; The periphery of horizontal counterbore, movable grip block and working roll fix that roller bending block is corresponding arranges four guiding counterbores parallel with horizontal counterbore, horizontally-guided bar one end contacts with guiding counterbore dilapidated walls, and the other end passes guiding counterbore and is fixed on the movable grip block outer face adjacent with bearing block.
In technique scheme, the outer face that the guide post external part in the piston rod of servo-cylinder and horizontal hydraulic cylinder and each guiding counterbore is all adjacent with movable grip block and bearing block is mutually concordant; One end that piston rod is connected with movable grip block with guide post is provided with screw thread, guide post and piston rod is fixed together with left side activity grip block respectively by nut.
In technique scheme, between movable grip block axis through-hole and each piston rod, oil cylinder sliding sleeve is set, between guiding counterbore and respective guide post, guide post sliding sleeve is set.
In technique scheme, horizontal hydraulic cylinder pressure is set to fixed value, and servo-cylinder is set to according to the horizontal off set action between working roll and frame central line that the roller that pushes the work forward moves horizontally.
In technique scheme, the each axle head of working roll is all fixed on corresponding bearing block by two spaced bearings, comprise the work roll bending mechanical axis that being mainly used in inside axle head bear bending roller force to hold, and outside bearing with the working roll horizontal force bearing of bending roller force bearing shared horizontal force.
In technique scheme, work roll bending mechanical axis holds as cylinder roller bearing, and working roll horizontal force bearing is taper roll bearing.
In technique scheme, cylinder roller bearing is arranged in bearing block by slide block, and its center offers the through hole embedding cylinder roller bearing, and the outer ring of described through hole and cylinder roller bearing fits tightly; The horizontal left and right sides of slide block and bearing block fit tightly, and are equipped with gap between the upper and lower both sides of slide block and bearing block.
In technique scheme, the vertical section of slide block is rectangle, and bearing block arranges the slider throughbores of square-section.
In technique scheme, the outboard end of described slide block contacts with the stair-step of bearing block and coordinates, and medial extremity is connected with the axle head gland being fixedly installed on bearing block rear end.
In technique scheme, between described slide block and axle head gland, be provided with gap along shaft centre line direction.
In technique scheme, bending roller force bearing is four-row tapered roller bearing, and horizontal force bearing is Biserial cylindrical roller bearing.
In technique scheme, be fixed with axial elongation plate respectively on the left of top working roll and bottom working roll bearing block end face, each extending-board end face outside has rectangular recess; Roller bending block fixed by left side working roll and working roll correspondence position arranges upper and lower external part, and the left and right sides end face of each external part respectively has a roller bending block through hole; First working roll locking cylinder connects a horizontal slide plate, and slide plate is stretched out by roller bending block through hole; Slide plate can stretch into working roll axial restraint in extending-board rectangular recess in the first working roll locking cylinder effect lower slider; On the right side of top working roll and bottom working roll bearing block end face, right side working roll is fixed on the right side of roller bending block and is also fixed with an axial elongation plate, and this extending-board end face outside has rectangular recess; Second working roll locking cylinder connects another horizontal slide plate; Working roll is fixed on roller bending block and is arranged dividing plate, and this another slide plate is stretched out by the space between roller bending block and dividing plate; This another slide plate can stretch into working roll axial restraint in the extending-board rectangular recess of right side in the second working roll locking cylinder effect lower slider.
In technique scheme, between roller bending block through-hole wall and horizontal slide plate, be furnished with abrasion-proof backing block.
In technique scheme, the top of intermediate calender rolls roll bending and shifting roller arrangement, two push cylinder are distributed in the left and right sides of intermediate calender rolls and are fixed in frame; Each push cylinder piston rod head all connects a push-and-pull head; Push-and-pull head horizontal cross-section is "T"-shaped, is fixed together in the T-slot being embedded in respective termination link with each termination link; Two termination links are connected and fixed by a horizontal shore; Horizontal shore is fixed on the intermediate calender rolls roll bending and shifting roller arrangement of below by support.
In technique scheme, intermediate calender rolls is also provided with axial locking device, and concrete structure is: the bearing block end face of intermediate calender rolls is fixed with the axial elongation plate be symmetrical set in intermediate calender rolls both sides, and the outside of axial elongation plate has rectangular recess; Intermediate calender rolls locking cylinder is fixed on the lateral surface of intermediate calender rolls roll bending and shifting roller arrangement; The tailpiece of the piston rod of intermediate calender rolls locking cylinder connects cuboid slide plate by chuck; A square hole slot is offered in the side of intermediate calender rolls roll bending and shifting roller arrangement, and cuboid slide plate also can stretch in the rectangular recess of axial elongation plate through square hole slot.
In technique scheme, the square hole slot inwall of intermediate calender rolls roll bending and shifting roller arrangement is fixed with abrasion-proof backing block.
The major advantage that this invention relates to content is:
1, this milling train can realize moving horizontally of working roll, gapless between working roll bearing block and roller bending block, and due to the design of side employing oil cylinder, the adverse effect of thermal expansion effects when need not consider that traditional offset distance is arranged, can by dead for working roll bearing block folder.
2, this milling train move horizontally the control objectives of distance be make working roll upper and lower roll to make a concerted effort be zero, add pressure sensor simultaneously, accurately can measure working roll horizontal force, and with this measured value, pre-set value be revised, thus reach the object of accurate level of control power.
3, on working roll bearing block, add a bearing near band steel place, working roll rigidity can be increased by dual bearing structure, significantly reduce the horizontal amount of deflection of working roll, the working roll roller footpath more much smaller than prior art can be realized.Simultaneously, the implementation of multiple dual bearing structure is provided, particularly realizes one direction by a slide block and slide, be equivalent to the stressed face contact being converted into skid face and bearing block of linear contact lay bearing block and bearing, make shaft strength even, improve bearing life.Installation method is ingenious, and structure is simple, economical and practical.
4, when there is thermal expansion effects in the operation of rolling, clamp owing to adopting the second translation oil cylinder on the right side of working roll and bottom working roll, in oil circuit controls, adopt corresponding overflow, thus make the second translation oil cylinder energy horizontal float under thermal expansion effects effect; Thus eliminate the parts that bring of thermal expansion effects and damage accordingly, thus be conducive to ensured the use safety of relevant device, extend service life.
5, because working roll footpath is less, and introduce working roll and move horizontally technology, adopt original upper middle roll stand on top working roll, the top working roll again roller replacing mode of frame on bottom working roll does not have operating space, and this roller replacing mode cannot carry out independent roller replacing operation to upper intermediate calender rolls.For addressing this problem, the present invention adopts the roller replacing mode of the independent roll change of intermediate calender rolls, can replace with intermediate calender rolls separately easily and fast.
Accompanying drawing explanation
Fig. 1 is six-high cluster mill structural representation in prior art;
Fig. 2 is the pony roll footpath six-high cluster mill structural representation in the present invention;
Fig. 3 is that in the present invention, pony roll footpath six-high cluster mill working roll is moved to the left schematic diagram;
Fig. 4 is that in the present invention, pony roll footpath six-high cluster mill working roll moves right schematic diagram;
In Fig. 5 the present invention, the A-A of Fig. 2 is to 90-degree rotation partial structurtes schematic diagram;
Upper intermediate calender rolls changing rig schematic diagram in Fig. 6-7 the present invention, wherein Fig. 7 is that the A of Fig. 6 is to 90-degree rotation view;
Intermediate calender rolls string roller arrangement schematic diagram in Fig. 8 the present invention;
Intermediate roll axial locking device schematic diagram in Fig. 9 the present invention;
Working roll axial locking device schematic diagram in Figure 10 the present invention;
Figure 11 adopts cylinder roller bearing as the stressed schematic diagram of working roll horizontal force bearing in an embodiment.
The working roll horizontal force bearing arrangement schematic diagram of Figure 12 another embodiment of the present invention;
Figure 13 is that the A-A of Figure 12 analyses and observe 90-degree rotation structural representation (being also working roll bearing block and dual bearing structure schematic diagram);
Figure 14 is the working roll horizontal force shaft strength schematic diagram in Figure 12.
Figure 15 is the working roll horizontal translation structure chart of six-high cluster mill another kind of embodiment in pony roll footpath of the present invention in Fig. 2.
Detailed description of the invention
Below in conjunction with an embodiment and accompanying drawing, the invention will be further described.
In order to understand the present invention better, below in conjunction with embodiment and accompanying drawing, technical scheme of the present invention is described further.
As shown in Figure 2, six-high cluster mill comprises rolling line adjusting device 201, roller bending block 207 fixed by top backing up roll 202, upper intermediate calender rolls 203, upper middle roll bending roll-shifting device 204, top working roll 205, right side working-roller bending device 206, right side working roll, roller bending block 217 fixed by bottom working roll 208, lower intermediate calender rolls 209, frame 210, lower support roll 211, roll gap regulation hydraulic cylinder 212, backing roll bascule 213, lower intermediate calender rolls roll bending and shifting roller arrangement 214, left side working-roller bending device 215, left side Cam device 216, left side working roll.The same with the prior art of Fig. 1, rolling line adjusting device 201 is for adjusting height of rolling line.Upper middle roll bending roll-shifting device 204 and lower intermediate calender rolls roll bending and shifting roller arrangement 214 are for adjusting plate shape.Right side working-roller bending device 206 and left side working-roller bending device 215 are for adjusting plate shape.Roll gap regulation hydraulic cylinder 212 is for adjusting rolled piece exit thickness.Left side Cam device 216 is for realizing moving horizontally of working roll.
Wherein, top backing up roll 202, upper intermediate calender rolls 203, top working roll 205, bottom working roll 208, lower intermediate calender rolls 209 and lower support roll 211 are arranged in order from top to bottom and are supported on respective bearing block respectively by swivel bearing, top backing up roll 202 and lower support roll 211 are arranged symmetrically with up and down relative to the roll line of six-high cluster mill, upper intermediate calender rolls 203 and lower intermediate calender rolls 209 are arranged symmetrically with up and down relative to roll line, and top working roll 205 and bottom working roll 208 are arranged symmetrically with up and down relative to described roll line.
The respective center line of six-high cluster mill top backing up roll 202, lower support roll 211, upper intermediate calender rolls 203 and lower intermediate calender rolls 209 is all positioned on same perpendicular with frame central line.
As in Figure 3-5, the left side of each axle head of working roll is also provided with left side Cam device (working roll fixes roller bending block upper working rolls and lower working rolls each self-separation when arranging, and arranges a left side Cam device separately at each axle head of working roll 205 and 208; Fix upper working rolls and lower working rolls when roller bending block upper working rolls and lower working rolls shares as working roll in Fig. 2 and a left side Cam device be set jointly), left side Cam device comprises a wedge plate 305, the arranged outside piston rod of wedge plate 305 can along the first translation oil cylinder 309 of working roll center line movement; Wedge plate 305 has the vertical wedge plate inclined-plane becoming angle with working roll shaft centre line; On the left of each axle head, the fixing roller bending block inclined-plane that roller bending block 215 has a vertical setting fixed by working roll, wedge plate 305 inclined-plane and this fixing roller bending block 215 inclined-plane match, and merge can relative sliding, wedge plate 305 inclined-plane move along this fixing roller bending block 215 inclined-plane under the first translation oil cylinder 309 acts on and promote left side working roll fix roller bending block 215 near working roll bearing block and the direction of impeller-hub bearing 220 move;
The right side of each axle head of working roll (arranges corresponding with left end, can arrange separately at each axle head of working roll 205 and 208, also then upper working rolls and lower working rolls can be arranged jointly as one, same level height is positioned at left side Cam device), the vertical section that roller bending block 206 fixed by right side working roll is a plane parallel with working roll shaft centre line; Right side working roll is fixed roller bending block 206 arranges and can be promoted right side working roll fixed bend roller arrangement when the second translation oil cylinder 303, second translation oil cylinder 303 acts on and move to the direction near working roll bearing block 220 impeller-hub bearing.
As Fig. 3, shown in 5, if realize working roll (top working roll 205 and/or bottom working roll 208) to move right, can realize in the following way: the first translation oil cylinder 309 promotes wedge plate 305 and moves along piston rod direction, wedge plate 305 coordinates promotion push rod 301 by inclined-plane, push rod 301 promotes left side working-roller bending device 215, left side working-roller bending device 215 to be pushed the work forward roll bearing seat 220 by side, thus top working roll 205 and bottom working roll 208 are moved right.After moving on to assigned address, right side promotes oil cylinder 303 promotion right side working-roller bending device 206 and is moved to the left until be close to working roll bearing block 220, thus top working roll 205 and bottom working roll 208 level are fixed.304 is working roll bending cylinder, the same with Fig. 1 Reference numeral of the prior art 106, and it is mainly finished the work the roller of roller, and in order to adjust plate shape.
As Fig. 4, shown in 5, if realize working roll (top working roll 205 and/or bottom working roll 208) to be moved to the left, can realize in the following way: the first translation oil cylinder 309 pulls wedge plate 305 to move along piston rod direction, second translation oil cylinder 303 promotes right side working-roller bending device 206 and is moved to the left until be close to working roll bearing block 220, until the inclined-plane of push rod 301 and wedge plate 305 kill completely, thus realize top working roll 205 and bottom working roll 208 level is fixed.
Guide post 302 makes the movement of right side working-roller bending device 206 have good directionality and stability.
Load cell 308 is embedded in the joint of wedge plate 305 and frame 210, for measuring the pressure bottom wedge plate 305.
When rolling starts, according to Roll tensioning treatment and rolling procedure, wedge and size is pointed to for 0-10 ton (preferred a certain concrete numerical value is as 10 tons) is for target with horizontal force, use Related Computational Methods inverse to go out the eccentric throw size of required working roll, then this eccentric throw is carried out relevant matches as the pre-set value of the operation of rolling.Complete left side Cam device 216 according to this value and right side promotes the control of oil cylinder 303, thus realize top working roll 205 and bottom working roll 208 is fixed along band steel direction, very close to each other.In the operation of rolling, roller system stablizes, and load cell 308 can obtain the pressure bottom wedge plate 305, and then can obtain the active force on wedge plate.Can obtain according to oil cylinder working-pressure size the active force that right side promotes oil cylinder 303, now can be acted on the horizontal force of top working roll 205 and bottom working roll 208 by the equilibrium equation of power.If horizontal force is in 0-10 ton (10 tons) scope, then model is reasonable, does not regulate again.If horizontal force is in not this expected range, the horizontal direction of then carrying out corresponding top working roll 205 and bottom working roll 208 according to rolling operating mode and rolling procedure moves, thus make horizontal force control in 0-10 ton (10 tons) scope, reach the effect of accurate level of control power, to ensure that there is in the operation of rolling good Strip Shape Control state.
When there is thermal expansion effects in the operation of rolling, promote oil cylinder 303 owing to adopting right side on the right side of working roll 205 and bottom working roll 208 to clamp, in oil circuit controls, adopt corresponding overflow, thus make right side promote oil cylinder 303 energy horizontal float under thermal expansion effects effect.Thus eliminate the parts that bring of thermal expansion effects and damage accordingly, thus be conducive to ensured the use safety of relevant device, extend service life.
Because working roll footpath is less, and introduce working roll and move horizontally technology, adopt original upper middle roll stand on top working roll, the top working roll again roller replacing mode of frame on bottom working roll does not have operating space, and this roller replacing mode cannot carry out independent roller replacing operation to upper intermediate calender rolls.For addressing this problem, the present invention adopts the roller replacing mode of the independent roll change of intermediate calender rolls, to meet in practical work process the demand needing to replace with separately intermediate calender rolls.As shown in fig. 6-7, when changing intermediate calender rolls, rise the first roll change oil cylinder 402, after the roller contact in movable rail 404 with upper intermediate calender rolls 203 bearing block, then fall the second roll change oil cylinder 401.When movable rail 404 rises; undertaken leading to guarantee that movable rail 404 vertically rises by guide post 403; trapped orbit 405 is fixed on middle roll bending roll-shifting device 204; its height is concordant with the height that movable rail 404 vertically rises, and during to guarantee roll change, whole upper intermediate calender rolls 203 energy is continuous pulls out from frame 210.Due to the existence of movable rail 404 and trapped orbit 405, by the oil cylinder 501 of upper intermediate roll shifting device (shown in Fig. 8) and the roll changing carriage of Shelf External with the use of, upper intermediate calender rolls moves on movable rail 404 and trapped orbit 405.
At certain upper intermediate calender rolls 203 with in top working roll 205 design gaps, upper intermediate calender rolls 203 can successfully realize independent roller replacing operation.
Figure 15 is working roll horizontal translation structure chart and the control method thereof of the another kind of embodiment of pony roll footpath of the present invention six-high cluster mill.
Left side working roll is fixed roller bending block 217 and is fixed in frame 210, mainly play supporting role to coupled each parts.On the left of frame central line (as shown in figure 15), servo-cylinder 22 cylinder body is embedded in left side working roll and fixes in roller bending block 217, and servo-cylinder 22 cylinder body is fixed on left side working roll by bolt assembly 25 and fixes on roller bending block 217 by end cap 24.Left side roll-bending cylinder 21 embeds left side working roll and fixes in roller bending block 217.Left side working roll is fixed roller bending block 217 center and is had a horizontal counterbore, four vertical through holes (upper and lower each two are had in its surrounding, as shown in figure 15), the middle cardiac prominence shaft extension of the movable grip block 19 in left side enters left side working roll and fixes in the horizontal counterbore in the middle part of roller bending block 217, and form mating surface with horizontal counterbore above and below, can slidably reciprocate along this mating surface during work.Movable grip block 19 center, left side has horizontal axis through-hole, surrounding have four cross through hole (on, lower each two, the perforate correspondence position fixing roller bending block 217 with left side working roll is arranged), guide post 27 is fed through left side working roll respectively and fixes roller bending block 217 through hole corresponding to surrounding on the movable grip block 19 in left side, on the left of guide post 27 is fed through, working roll is fixed in the corresponding through hole of roller bending block 217 surrounding and is provided with guide post sliding sleeve 27-1, guide post 27 is formed with guide post sliding sleeve 27-1 and coordinates, the effect of guide post sliding sleeve 27-1 mainly prevents the excessive wear at guide post 27 and makes guide post 27 have slide-and-guide preferably.Projection and the left side working roll of four guide posts 27, the movable grip block 19 in left side fix the mating surface formed in the horizontal counterbore in the middle part of roller bending block 217 can ensure top working roll assemble 18 and bottom working roll assemble 17 horizontally-guided translations and can not beat, realize precise alignment.One end addition that guide post 22 is connected with the movable grip block 19 in left side has screw thread, is fixed together by movable to guide post 27 and left side grip block 19 by guide post nut 20.Oil cylinder sliding sleeve 28 is installed in movable grip block 19 mider hole in left side, the piston rod afterbody of servo-cylinder 22 has been processed into screw thread, this piston rod is fed through movable grip block 19 middle through-hole of oil cylinder sliding sleeve 28 and left side, is linked together by the movable grip block 19 of the piston rod of servo-cylinder 22 and left side by center nut 29.On the right side of frame central line (as shown in figure 15), Normal hydraulic cylinder 26 cylinder body is embedded in right side working roll and fixes in roller bending block 207, and Normal hydraulic cylinder 26 cylinder body is fixed on right side working roll by bolt assembly 25 and fixes on roller bending block 207 by end cap 24.Normal hydraulic cylinder 26 is with locking device, its piston rod afterbody has been processed into screw thread, this piston rod is fed through axis through-hole in the middle part of oil cylinder sliding sleeve 28 and right movable grip block 19, is linked together by the movable grip block 19 of the piston rod of Normal hydraulic cylinder 26 and right side by guide post nut 20.Remainder and left side are arranged symmetrically with about frame central line, and functional description is identical.
When needs complete control, according to rolling mill practice design and real work needs, determine that initial top working roll 205 and bottom working roll 208 disembark frame center line to while the distance (providing lateral deviation e to the right here) that offsets, (namely the end face of the movable grip block 19 of the movable grip block 19 in left side and right side is fixed roller bending block 217 respectively and is fixed roller bending block 207 (separately the end face of close frame central line) with right side working roll and fit with left side working roll left side servo-cylinder 22 and right side Normal hydraulic cylinder 26 to be placed in respectively design initial position, there is the distance of setting each outer face of the movable grip block 19 of movable grip block 19 and right side to the adjacent face of now top working roll and bottom working roll bearing block 220 separately with left side respectively.The right atrial pressure set due to Normal hydraulic cylinder 26 is fixed, now only need to control servo-cylinder 22 can realize accurately controlling moving horizontally of working roll, by the servo valve control servo-cylinder 22 on outside oil circuit, promote the movable grip block 19 in left side to move right, and make it accurately reach the shift value of setting.Normal hydraulic cylinder 26 and servo-cylinder 22 are respectively with displacement transducer, as offset e to the right, take rolling centerline as benchmark, calculate Normal hydraulic cylinder 26 should leftward position, now two oil cylinders are respectively at initial position, they and bearing block have certain distance, then given cylinder efficient pressure, Normal hydraulic cylinder 26 is allowed to be parked in leftward position, given cylinder efficient pressure moves right by servo-cylinder 22 again, until being completed by bearing block on the grip block being pressed against Normal hydraulic cylinder 26 till gapless.Active force due to Normal hydraulic cylinder 26 is obviously greater than the power of servo-cylinder 22, such the right can keep motionless always, if have expansion or horizontal force excessive, exceed the pressure that right side oil cylinder 26 is given, just on loop, carry out overflow, thus the bearing in bearing block also can be made to be unlikely to burn out.
Fig. 8 is the string roller implement device of intermediate calender rolls, be fixed in frame 210 bottom push cylinder 501, push cylinder 501 piston rod head and push-and-pull 502 is connected, and push-and-pull 502 is in "T"-shaped, be embedded in the "T"-shaped groove of termination link 503, and be fixed together with it by screw.The termination link 503 of the left and right sides links together by link 504, and support 505 and link 504 are integrated, and support 505 is connected on upper middle roll bending roll-shifting device 204 by bolt and counterbore.When needs carry out axial roll shifting, push cylinder 501 promotes, and drives upper middle roll bending roll-shifting device 204 in axial direction to move, thus realize axial roll shifting by termination link 503, link 504 and support 505.
Fig. 9 is the axial locking implement device of intermediate calender rolls.The bearing block end face of upper intermediate calender rolls 203 is fixed with extending-board 601, and on extending-board 601, the corresponding cross section that has is for "] " rectangular recess of shape.Locking cylinder 603 is fixed on bearing 602, and bearing 602 is fixed on the side of middle roll bending roll-shifting device 204.The tailpiece of the piston rod of locking cylinder 603 connects slide plate 604 by chuck 605.Slide plate 604 is cuboid.Offer a square hole slot in the corresponding position, side of upper middle roll bending roll-shifting device 204, be convenient to slide plate 604 and be fed through.Abrasion-proof backing block 606 is had, for the protection of slide plate 604 at the square hole slot internal fixtion of the side of upper middle roll bending roll-shifting device 204.When will carry out axial locking to upper intermediate calender rolls 203, locking cylinder 603 promotes slide plate 604 by chuck 605 and advances, until snap in the rectangular recess on extending-board 601, thus completes the axial locking of intermediate calender rolls.
Figure 10 is the axial locking implement device of working roll.In left side, working roll first locking cylinder 701 is fixed on cylinder support 702, and cylinder support 702 is fixed in frame 210.Working roll first locking cylinder 701 piston rod head is connected with connector 703, connector 703 and slide plate 704 link together, left side working roll is fixed the upper and lower both sides of roller bending block 217 external part and is respectively had a square opening, is all furnished with the inordinate wear of the anti-limited slip plate 704 of abrasion-proof backing block 705 inside square opening.Be fixed with extending-board (left side extending-board 706, right side extending-board 716) respectively at top working roll 205 and the bottom working roll 208 bearing block end face left and right sides, on extending-board, the corresponding cross section that has is for "] " shape rectangular recess.On right side, oil cylinder 712 is fixed on cylinder support 715, and cylinder support 715 is fixed in frame 210.Oil cylinder 712 piston rod head is connected with connector 713, and connector 713 and slide plate 711 link together.One end that dividing plate 708 is connected with frame 210 has cross section for "] " shape rectangular recess, and be fixed together by bolt assembly 714 and frame 210.Stud component 710 is fed through corresponding hole on slide plate 711 and dividing plate 708, and on the right side of being fixed on, working roll is fixed on roller bending block 207.
When needs carry out axial locking to top working roll 205 and bottom working roll 208, left side oil cylinder 701 promotes slide plate 704 by connector 703 and fixes roller bending block 217 square opening inner surface along left side working roll and advance, until snap in "] on the extending-board 706 of left side " in groove.Right side oil cylinder 712 promotes slide plate 711 by connector 713 and advances along dividing plate 708 inner surface, until snap in "] on the extending-board 716 of right side " in groove, thus complete the axial locking of top working roll 205 and bottom working roll 208.
Certain right side axial locking can adopt equally right side working roll fixed roller bending block 207 extend one section after and correspondingly offer a large square hole at it, as the locking of left side, slide plate 711 is allowed to advance along this large square internal surface of hole, until snap in "] on extending-board 706 " in groove, thus jointly complete the axial locking of top working roll 205 and bottom working roll 208 with left side axial locking device.
As shown in Figure 5, the present invention adds a bearing near band steel place on working roll bearing block 220, can increase working roll rigidity, significantly reduce the horizontal amount of deflection of working roll, can realize the working roll roller footpath more much smaller than prior art by dual bearing structure.Concrete structure is: the two ends of top working roll 205 and bottom working roll 208 are fixed on corresponding bearing block by bending roller force bearing 307 and horizontal force bearing 306 respectively, bending roller force bearing 307 is mainly used to the bending roller force bearing working roll, horizontal force bearing 306 is mainly used to jointly to bear with bending roller force bearing 307 horizontal force that operation of rolling central roll system produces, the great like this service life extending bending roller force bearing 307.Due to the existence of horizontal force bearing 306, reduce the spacing distance of the horizontal support of working roll, thus significantly reduce the amount of deflection of the upper and lower working roll on horizontal force action direction.Based on this kind of design, the most pony roll footpath of working roll can be made can to reach 180mm, and the wide ratio in footpath can reach 0.14.
Find through overtesting, by lengthening working roll roll neck and increasing by a pair cylinder roller bearing, use a pair four-row tapered roller bearing can be equivalent to and a pair cylinder roller bearing carrys out support works roller.Like this in the operation of rolling, working roll rigidity increases, and flexure reduces, can better control panel shape.In first embodiment of the present invention, bending roller force bearing 306 is cylinder roller bearing, and horizontal force bearing 307 is taper roll bearing.The stressed schematic diagram of Figure 11 to be bending roller force bearing 306 be cylinder roller bearing.Horizontal force bearing 306 and bearing block 220 are linear contact lay.
But in this embodiment, although this mode makes working roll rigidity obtain guarantee, introduce a new problem, i.e. the stressed problem of cylinder roller bearing.When plate shape go wrong need to adjust with work roll bending time, cylinder roller bearing can hinder working roll roll neck place to produce amount of deflection, the effect of such roller is just not obvious, plate shape also just can not get better improvement, working roll increases because roll diameter of roller diminishes to bend in the horizontal direction simultaneously, cylinder roller bearing is played a supporting role at axle journal place, in turn enhances working roll roll neck rigidity.This just requires that cylinder roller bearing belongs to freely in the vertical direction without restrained condition, and horizontal direction will improve roll neck horizontal deflection, bearing need support stressed, bearing is just equivalent to be placed in a vertical long holes, but its outer ring and bearing block are linear contact lay during shaft strength, bearing outer ring is so just made to deform, rolling element unbalance stress, thus bearing shortens service life greatly, have a strong impact on production efficiency.
Through test further, propose a kind of workroll bearing device as Figure 12-14 newly, comprise the bearing block 220 being installed on working roll 208 or 205 roll neck place, bending roller force bearing 307 and horizontal force bearing 306 are installed in bearing block 220, this device also comprises the slide block 10 be arranged between bearing block 220 and horizontal force bearing 306, slide block 10 offers the through hole embedding horizontal force bearing 306, the outer ring of through hole and horizontal force bearing 306 fits tightly, the left and right sides and the bearing block 220 of slide block 10 fit tightly, and are provided with gap between upper and lower both sides and bearing block 220.The profile of slide block 10 is rectangle, and its one end is connected with the stair-step of bearing block 220, and the other end is connected with the axle head gland 12 being fixedly installed on bearing block 220 rear end, is provided with certain interval between slide block 10 and axle head gland 12.
In the present embodiment, bending roller force bearing 307 is four-row tapered roller bearing, and its rear end, outer ring is fixed by stair-step in bearing block 220, and front end, outer ring is fixed by interior seal cover 6, and interior seal cover 6 is fixed by screws on bearing block 220; Its inner ring rear end is withstood by distance collar 9, and inner ring front end is pressed against on bearing apical ring 5, and bearing apical ring 5 is fixed by thrust ring 3, and thrust ring 3 is fixed by working roll 205 or 208 shaft shoulder again, and thrust ring 3 is dissection type assembling.Horizontal force bearing 306 is Biserial cylindrical roller bearing, and its front end, outer ring is fixed by stair-step in bearing block 220, and rear end, outer ring is compressed by axle head gland 12, and axle head gland 12 is screwed on bearing block 220; Its inner ring rear end is fixed by collars and the shaft shoulder, and inner ring front end is compressed by the inner ring of distance collar 9 with bending roller force bearing 307.Bearing block 220 rear and front end is all provided with dust ring 14, and bearing block about 220 two ends are provided with the liner plate 2 during roll change.
Principle of the present invention is: when working roll 205 or 208 roller, horizontal force bearing 306 place roll neck needs to produce flexure to improve plate shape, if bearing block 220 and horizontal force bearing 306 do not have relative sliding gap, the sag of working roll 205 or 208 will reduce, roller effect will reduce, plate shape also just can not get improving, but there are the words in gap between horizontal force bearing 306 and bearing block 220, horizontal force bearing 306 is just only by the power of horizontal direction, vertical direction does not stress, horizontal force bearing 306 will unbalance stress, the lost of life, therefore a slide block 10 that can slide in bearing block 220 along bending roller force direction is increased, during such roller, slide block 10 can slide up and down and not limit roll neck vertical deflection in bearing block 220, ensure that again the horizontal rigidity of axle journal well, be equivalent to the linear contact lay stressed face contact that be converted into slide block 10 sliding surface and bearing block 220 of bearing block 220 with horizontal force bearing 306, substantially improve the load diatibution of horizontal force bearing 306, extend service life, improve the production efficiency of thin plate rolling.
More than illustrate and be only Application Example of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalence change that the present patent application the scope of the claims is done, still belong to protection scope of the present invention.
Claims (2)
1. the upper independent changing rig of intermediate calender rolls, be applicable to pony roll footpath six-high cluster mill, described pony roll footpath six-high cluster mill comprises working roll, intermediate calender rolls, backing roll, wherein, top backing up roll, upper intermediate calender rolls, top working roll, bottom working roll, lower intermediate calender rolls and lower support roll are arranged in order from top to bottom and are supported on respective bearing block respectively by swivel bearing; Each backing roll of upper and lower, intermediate calender rolls, working roll are respectively relative to roll line axial symmetry separately; The each axle head of each intermediate calender rolls arranges intermediate calender rolls roll bending and shifting roller arrangement, and backing roll bascule and roll gap regulation hydraulic cylinder are positioned at frame bottom; Frame central line is vertically positioned at frame central;
It is characterized in that: top backing up roll, lower support roll, upper intermediate calender rolls and lower intermediate calender rolls center line are separately positioned on same perpendicular with frame central line all the time;
In the horizontal direction, each axle head left and right sides of each working roll sets gradually working-roller bending device by shaft centre line toward both sides and roller bending block fixed by working roll, and horizontal gapless between roller bending block and each working roll bearing block fixed by working roll; Working roll both sides working roll is fixed roller bending block place and is arranged all in the horizontal direction and move horizontally adjusting device, describedly move horizontally the horizontal eccentric throw and oppositely movement that adjusting device is set to exist according to working roll center line and frame central line, make working roll center line and frame central line be positioned on same perpendicular; Top working roll and the bottom working roll left and right sides separately all arranges a working roll and fixes roller bending block; Or top working roll and bottom working roll arrange a shared working roll at homonymy and fix roller bending block;
Upper intermediate calender rolls arranges independent changing rig, comprise the first roll change oil cylinder and the second roll change oil cylinder that two piston rods all vertically arrange upward, first roll change oil cylinder and the second roll change oil cylinder are fixed on middle roll bending roll-shifting device, and the first roll change oil cylinder is positioned at the outside away from upper intermediate calender rolls; Intermediate calender rolls roll bending and shifting roller arrangement is horizontally disposed with in left-right direction a trapped orbit; The piston rod top of the first roll change oil cylinder arrange one parallel with trapped orbit and be positioned at the movable rail of same perpendicular, can with the roller contact in upper middle roll bearing seat when movable rail rises; The limit level altitude that trapped orbit height and movable rail vertically rise is concordant;
The described adjusting device that moves horizontally is: the working roll of working roll both sides is fixed roller bending block center and all arranged horizontal counterbore, fills in movable grip block in horizontal counterbore; Middle cardiac prominence axle one end of movable grip block is stretched in horizontal counterbore and middle cardiac prominence axle is horizontally disposed with axis through-hole, and the middle cardiac prominence axle other end of movable grip block arranges and extends out boss, and the outer face and the working roll bearing block that extend out boss are adjacent; The inner face extending out boss is fixed roller bending block end face vertical with working roll and is coordinated; The working roll of side is fixed in roller bending block central horizontal counterbore and is arranged servo-cylinder, and the working roll of opposite side is fixed in roller bending block central horizontal counterbore and arranged horizontal hydraulic cylinder; The piston rod of servo-cylinder and hydraulic cylinder is all fixed on the movable grip block outer face adjacent with bearing block through respective movable grip block axis through-hole; The periphery of horizontal counterbore, movable grip block and working roll fix that roller bending block is corresponding arranges four guiding counterbores parallel with horizontal counterbore, horizontally-guided bar one end contacts with guiding counterbore dilapidated walls, and the other end passes guiding counterbore and is fixed on the movable grip block outer face adjacent with bearing block; The outer face that guide post external part in the piston rod of servo-cylinder and horizontal hydraulic cylinder and each guiding counterbore is all adjacent with movable grip block and bearing block is mutually concordant; One end that piston rod is connected with movable grip block with guide post is provided with screw thread, guide post and piston rod is fixed together with left side activity grip block respectively by nut; Between movable grip block axis through-hole and each piston rod, oil cylinder sliding sleeve is set, between guiding counterbore and respective guide post, guide post sliding sleeve is set; Horizontal hydraulic cylinder pressure is set to fixed value, and servo-cylinder is set to according to the horizontal off set action between working roll and frame central line that the roller that pushes the work forward moves horizontally.
2. the independent changing rig of upper intermediate calender rolls according to claim 1, is characterized in that: guide post vertically arranges and passes movable rail, is vertically led when movable rail is risen by guide post.
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| CN109500083B (en) * | 2018-12-28 | 2024-01-26 | 中冶南方工程技术有限公司 | Six-roller mill capable of quickly replacing upper intermediate roller and roller replacing method |
| CN110883100A (en) * | 2019-11-30 | 2020-03-17 | 广东含元工业技术有限公司 | Roll changing method of six-roll mill |
| CN113459647B (en) * | 2021-04-20 | 2023-12-22 | 利和纸品（嘉善）有限公司 | Double-sided printing device for packaging cartons |
| CN114178319A (en) * | 2021-11-17 | 2022-03-15 | 首钢智新迁安电磁材料有限公司 | Control method and device of rolling equipment and computer equipment |
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| DE10138589A1 (en) * | 2001-08-06 | 2003-02-20 | Sms Demag Ag | Device for automatically exchanging a roller set in a rolling mill comprises positioning a traverse on a roller exchange car having wheels, moving the traverse on guide rails into the roll stand, and withdrawing from the stand |
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