EP0908246A1 - Walzenwechselvorrichtung für Arbeitswalzen oder Zwischenwalzen von Walzgerüsten und Einlagerungsvorrichtung - Google Patents

Walzenwechselvorrichtung für Arbeitswalzen oder Zwischenwalzen von Walzgerüsten und Einlagerungsvorrichtung Download PDF

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Publication number
EP0908246A1
EP0908246A1 EP98402518A EP98402518A EP0908246A1 EP 0908246 A1 EP0908246 A1 EP 0908246A1 EP 98402518 A EP98402518 A EP 98402518A EP 98402518 A EP98402518 A EP 98402518A EP 0908246 A1 EP0908246 A1 EP 0908246A1
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EP
European Patent Office
Prior art keywords
cylinders
cylinder
working
cage
rails
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98402518A
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English (en)
French (fr)
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EP0908246B1 (de
Inventor
Alain Lecrivain
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clecim SAS
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Kvaerner Metals Clecim SA
VAI Clecim SA
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Publication of EP0908246A1 publication Critical patent/EP0908246A1/de
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Publication of EP0908246B1 publication Critical patent/EP0908246B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/103—Manipulators or carriages therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/145—Lateral support devices for rolls acting mainly in a direction parallel to the movement of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B2013/003—Inactive rolling stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/028—Sixto, six-high stands

Definitions

  • the invention relates to a device for changing the rolls in a rolling stand and especially applies to a sexto type cage or "Z-High" in which intermediate cylinders are interposed between the working rolls and the support cylinders.
  • a rolling mill understands, in a way general, a fixed cage having two uprights apart between which are arranged several cylinders superimposed on parallel axes, respectively two working cylinders defining an air gap of passage of the product and one or more cylinders of support, a clamping force being applied between the cylinders by mechanical or hydraulic cylinders.
  • each cylinder is generally carried at its two ends by two bearings housed in support blocks called chocks, slidably mounted along faces of guide provided respectively on the two uprights of the cage and parallel to a passing clamping plane by the axes of the working cylinders.
  • each working cylinder is associated with a cylinder support.
  • a cylinder intermediate is interposed between each cylinder of work and a support cylinder.
  • each working cylinder is associated with a set of support cylinders arranged on either side of the passing clamping plane by the axes of the working cylinders.
  • each side support assembly is consisting of at least three associated rollers, mounted on a frame arranged in the space between the running plane of the laminated strip, the cylinder work and the intermediate cylinder and carried by arms articulated respectively on the two chocks of the intermediate cylinder.
  • the cylinder to be replaced and the cylinder new ones may be damaged by contact with other cylinders or the fixed parts of the cage. he it is therefore desirable that the cylinders are guided precisely with respect to the cage during their displacement.
  • a replacement often including an organ extraction fitted with removable hooking means cylinders and mounted movable in translation along a direction parallel to the axes of the cylinders, the interior of a side receiving frame fitted with means for supporting and guiding the cylinders.
  • each cylinder is generally carried by its two chocks which have rollers rolling on fixed rails aligned respectively on the cage and on the receiving frame.
  • Each working cylinder is then provided, at its two axial ends, in the form of extensions cylindrical trunnions which rest on their ends on axial stops for holding in position of the cylinder during rolling.
  • a gripping device is used under load consisting of a suspended operating rod an overhead crane and fitted at one end with a cylindrical recess called “cannon".
  • the rod is placed in alignment with the cylinder to be replaced and the "barrel" is engaged on the trunnion.
  • the rod is associated with a counterweight to balance the weight of the cylinder which can thus be lifted and removed from the cage.
  • the device extraction is mounted, as usual on a carriage movable on fixed rails, parallel to the axes of the cylinders, and cooperating with two auxiliary trolleys movable transversely.
  • the extraction device is provided with two vertically movable cannon support which can be adjusted at each cylinder work to slip on the trunnion of it, the working cylinder can then be lifted in cantilevered.
  • each working cylinder is held in overhang by a variable level support member does not allow ensure precise positioning of the cylinder and is therefore hardly applicable to rolling mills of the Z-High type mentioned above, in which each working cylinder is held tight between two lateral support roller groups.
  • each working cylinder forms, with the cylinder associated intermediary and the two sets of lateral support rollers, an "insert" which can be disassembled as a whole, the assembly being supported by two intermediate cylinder chocks which can be fitted with rollers rolling on rails guidance.
  • Cylinder replacement operations are therefore quite complicated and require bulky devices since it must be dismantled the entire insert even if it has to be replaced only the working cylinder. Furthermore, after disassembly of the insert, replacement of the cylinder work is quite difficult to do quickly and automatically without interference from others parts of the insert.
  • the object of the invention is to solve the whole of these problems through a change device of cylinders which allows to perform quickly and simply all the replacement operations for working cylinders, when these are devoid chocks at their ends, reducing or eliminating the risk of interference between different mechanical organs called to move.
  • a change device of cylinders which allows to perform quickly and simply all the replacement operations for working cylinders, when these are devoid chocks at their ends, reducing or eliminating the risk of interference between different mechanical organs called to move.
  • Such a device can operate very reliable while remaining relatively constructed economic.
  • the invention is specially adapted to a Z-High type rolling mill because it allows, on the one hand remove the two working cylinders, alone, either the whole insert with the cylinders intermediaries and associated support packages and, on the other hand to remove from this assembly the cylinder of work without any risk of interference with the intermediate cylinder or support rollers.
  • the invention also allows, if necessary, to remove a single working cylinder or a single intermediate cylinder.
  • the organ support includes a single piece in which two cylindrical bores are formed each accommodation in which a party commits end of the journal, each bore being extended, its lower part on the side of the cylinder, by a projecting part in the form of a semi-cylindrical cradle, and on which comes to rest, in supported position, the remaining part of the trunnion.
  • the extraction device can determine, selectively, through the means removable attachment, disassembly and reassembly, either working cylinders alone or the whole of each insert, each cylinder of work being carried by the support member and kept away, at a determined level, from the cylinder intermediate and lateral support assembly corresponding sliding on the guide rails of the intermediate cylinder.
  • the cage is provided with means removable support, at least, from the working cylinder upper, having two positions, respectively one support position of said cylinder at its level of disassembly and a cleared position.
  • means removable support at least, from the working cylinder upper, having two positions, respectively one support position of said cylinder at its level of disassembly and a cleared position.
  • the lower working cylinder rests on the cylinder lower middle which is associated with means adjusting its level in relation to the cage.
  • said level adjustment means are first adjusted to place the cylinder work below its dismantling level for the engagement of the lower housing of the organ of support on the trunnion of said working cylinder lower and to be determined by lowering the cylinder lower intermediate, taking charge of lower working cylinder by the support member.
  • both guide frames are each associated with an extraction device and can be rotated in position replacement, one of the chassis being fully initially empty for receiving cylinders used and the other chassis being loaded with at least one pair of working cylinders carried by the device corresponding extraction to ensure almost immediate replacement of said cylinders.
  • auxiliary carriage carrying the two guide frames each associated with a extraction device can advantageously be mounted on a main handling trolley movable, parallel to the axes of the cylinders, between a replacement position in contact with the rolling stand and a separate maintenance position and comprising, at its end facing the cage rolling mill, a connecting part comprising two side uprights on which are mounted rail sections arranged in line with the rails of the cage and on which the rails of each guide frame, by displacement transverse of the auxiliary carriage.
  • the device is associated with a rack mechanized storage associated with the change of cylinders, and from which can be performed, automatically, loading or unloading of new working cylinders or refurbished, and worn out working cylinders.
  • the storage rack includes at least one box spring on which are arranged at least two storage locations for cylinders of work each provided with a pair of spread cradles, centered on an axis parallel to the axes of the cylinders of the rolling mill, for depositing, on said bed base, a working cylinder fitted at both ends with two pins resting on said separated cradles, one of said places being free for deposit of a used working cylinder and the other of said locations being occupied by a cylinder of replacement.
  • Figures 1 to 4 schematically show a sexto or Z-High rolling mill stand 1 comprising two sets of cylinders E1, E2, respectively upper and lower, symmetrical with respect to average rolling plan P or pass line.
  • Each set includes a support cylinder 2, a intermediate cylinder 3 and a working cylinder 4 of decreasing diameters, these cylinders having their parallel axes and placed substantially in a plane of clamping P 'perpendicular to the rolling plane P.
  • Support cylinders 2 and cylinders intermediaries 3 are rotatably mounted around their axis and are guided vertically in the uprights 1a, 1b of cage 1, so as to be able to move vertically under the action of clamping means 17 (Fig.4) described below.
  • the cage In the position shown in Figure 1, the cage is in position open, the cylinders being slightly apart each other to allow mounting and disassembly.
  • a chock usually made up of a housing in which a centering bearing is mounted a pin at the axial end corresponding cylinder.
  • each chock is threaded in a window provided on the corresponding amount 1a, 1b of cage 1 and can slide vertically along guide faces formed on the sides of the window or, for chocks 6 cylinders intermediates 3, 3 ', on solid pieces fixed on the cage and forming hydraulic blocks B carrying hydraulic cylinders 61, 61 '(symbolized in the figure by arrows), which allow to spread or bring together the chocks to determine a bend, respectively positive or negative of the intermediate cylinders and, by Therefore, working cylinders.
  • the two uprights of the cage 1 are provided with means of tightening such as screws 17a resting on the chocks 2a of the upper support cylinder 2 which themselves rest on balancing cylinders 2b mounted on hydraulic blocks B.
  • chocks from the support cylinder lower 2 'rest on hydraulic cylinders 17b forming adjustable shims.
  • the clamping screws 17a determine the general level of the pass line while the hydraulic cylinders 17b allow adjustment of the clamping force and the width of the air gap between the working rolls 4.
  • each chock 6, 6'located on the operator side is equipped with a body attachment 10 allowing handling.
  • Adjusting the level of the cylinders intermediates can be carried out by the cylinders of bending 61. However, the level of the cylinder lower intermediate 3 'which rests on the cylinder 2 'support, can also be determined by the shims lower 17b when these are adjustable.
  • the parts 8a of the rails 8, 8 'corresponding to the two uprights of cage 1 can be retracted so as not to exceed protrusion on the guide faces, during rolling. These retractable parts are put back in place only after opening the cylinders for allow the withdrawal of these.
  • the cage 1 can also be provided rails not shown allowing disassembly of support cylinders, respectively upper 2 and lower 2 '.
  • the working cylinders 4, 4 ' which have a reduced diameter, do not have chocks and are provided, at each axial end, with cylindrical journal-like extensions 11 which are supported, in the disassembly position, on removable support means 62, 62 'indicated schematically in Figure 1.
  • the invention applies especially to a Z-High type rolling mill in which each cylinder intermediary 3 is associated, as shown on the Figure 4, with two sets 13 of lateral support placed on each side of working cylinder 4 and extending over its entire length.
  • Each lateral support assembly 13 comprises at minus three rollers of axes parallel to those of cylinders, respectively a roller 15 extending the along the working cylinder and supporting itself on two other rolls.
  • the set of rollers is mounted on a side member 14 carried at its two ends, by arms articulated respectively on the two chocks 6 of the intermediate cylinder 3.
  • These are sliding mounted, in known manner, between faces vertical guide provided on the two blocks hydraulic B fixed on the uprights of the cage 1 and carrying the hydraulic camber cylinders 61, 61 ′.
  • These are supported on lateral ears (not represented) of choise 6 and can also provide the height adjustment of the intermediate cylinders, especially for opening the cage.
  • each lateral support assemblies 13 of each cylinder 4, 4 ' are associated respectively with two horizontal beams 16 placed symmetrically on the side and other of the clamping plane P 'and movable horizontally so as to adjust their position lateral to the working cylinder.
  • Each beam 16 extends between the two uprights 1a, 1b, the along the side roller support side member 14 corresponding and therefore defines, for the support assembly lateral 13, a reference face whose position can be adjusted by horizontal sliding of the beam 16, for example under the action of screw-nut adjustment 16a mounted on stand 1 and each controlled by an autonomous motor.
  • each 4, 4 'working cylinder can rest, via its pins 11 on removable supports 62, 62 ', which have not been shown schematically in Figure 1 and which consist of mounted eclipsable forks, for example, on hydraulic blocks and coming place under the pins 11 of the working cylinder to support it, said forks being able to be laterally cleared to release the cylinder from work when it comes into contact with the product.
  • the working rolls 4, 4 'then rest on the forks 62, 62 ', and the level thereof is determined so as to leave, between each working cylinder 4, 4 'and the intermediate cylinder corresponding 3 '3', a light play allowing axial displacements without risk of contact between the cylinders.
  • the cylinder changing device C includes a mobile main cart 18 in translation in a direction parallel to axes of cylinders 3 and 4, relative to cage 1.
  • the carriage 18 rolls, by wheels 19, on rails R (Fig. 2) fixed to the ground.
  • the carriage 18 is provided to move from the work area to proximity of rolling stand 1 to a maintenance position away from cage 1 and placed in a hall 20 for rectification or renovation working and intermediate cylinders, located on the side of main building 21 where the rolling mill 1.
  • the median plane of the industrial truck 18 is centered on the clamping plane P 'of the cage rolling mill.
  • the main carriage 18 is associated with a lateral carriage 25 movable in translation on the carriage 18 in a direction parallel to the direction of advance in the rolling mill 1, that is to say perpendicular to the axes of the cylinders.
  • the carriage 25 can be carried by wheels 26 (Fig. 2) rolling on rails 27 fixed on the main carriage 18 and parallel to the steering in advance in the rolling mill.
  • On the side carriage 25 can be placed at at least two chassis 29 each equipped with a device 28 cylinder extractor, displaceable in translation on the chassis 29, in a direction parallel to the axes of cylinders 3 and 4.
  • the two devices extractors 28 therefore move with the carriage lateral 25, perpendicular to the axes of the cylinders, to be placed, in turn, in the alignment of the cage.
  • Figures 2 and 3 show respectively, in cross section, two and three installations extractor devices.
  • Each chassis 29 associated with a device extractor 28 is limited by two load-bearing walls which are provided at their upper level and in the lower part, two pairs of rails 9, 9 'coming respectively in the extension of the pairs of fixed rails 8 and 8 'when the extractor device 28 concerned has its vertical mediator plan confused with the clamping plane P 'of the cage 1.
  • the carriage is provided, at its end facing cage 1, of a part of link 22.
  • This presents, in section transverse, a U-shape with two uprights side 22 apart which, in the close position of the carriage 18, surround the fastening members 10 chocks 6.
  • On the two uprights 22 are fixed sections of rails 23, 23 ′ placed at the level of the rails 8, 8 'of cage 1 and rails 9, 9' of the carriage 25 and separated by the same distance.
  • each chassis 29 can come to center, by movement of the carriage 25, on the median plane P 'of the cage, the two pairs of rails 9, 9 'being connected to the two pairs of fixed rails 8, 8 ′ by the sections 23, 23 'to form two continuous raceways.
  • Each chassis 29 thus forms a reception box or cylinder storage.
  • each receiving box may include, to their ends facing cage 1, each one projection 30 in the shape of a trapezoidal nose, formed substantially halfway up, so as to engage in a notch 31 of corresponding shape provided in the corresponding side wall of the end 22 of the carriage 18.
  • Each extractor device 28 is guided on the auxiliary carriage 25, via two guide rails 32, which are fixed substantially at mid-height load-bearing walls 29 and can be extended on the projecting part 30, beyond the rails 9, 9 'so as to penetrate, at the level of the rails 23, 23 ', between the hooking members 10, 10' of the intermediate cylinders 3, 3 ', in position close to the industrial truck 18.
  • the displacement on the rails 32 of the device extractor 28 is controlled by a rack and pinion system driven by an electric gear motor 33 mounted on the extractor device 28 and which controls the rotation of a pinion 33a meshing on a rack 33b fixed on the carriage 25, along the rails 32 (Fig. 5).
  • the device extractor is provided with a support member 34 arranged so that you can grasp each working cylinder by the pin on the operator side, holding the working cylinder cantilevered in a housing 35 of the support member.
  • the support member 34 is fixed at a constant level on the device extractor 28 and consists of a massive piece comprising two housings in the form of blind bores 35 of parallel axes, spaced vertically one distance equal to that separating the geometric axes cylinders 4, 4 'when these rest, in replacement position, on the forks of support 62, 62 '.
  • the diameter of blind holes 35 is substantially equal to the diameter of the pins 11, with a simple game allowing to easily engage the pins 11 in the bores 35 by a movement of translation of extractor 28 in the direction geometric axes of the cylinders 4, 4 '.
  • the levels relative of the cylinders are variable since they depend on their wear.
  • the management of working cylinder is always carried out at one level well determined with reference levels fixed guide rails 8, 8 ', the two housings 35 being placed on a single mounted piece sliding at a constant level defined by the rails 32 of chassis 29.
  • the levels of replacement of intermediate cylinders are defined by rails 8, 8 'and the replacement levels of working cylinders are determined by the positions support members 62, 62 ', the axes of the cylinders being removed in this position from a constant distance. So just plan, if if necessary, a height adjustment of the solid part 34 relative to the extraction carriage 28 to align, with precision the axes of the housings 35 on the axes working cylinders.
  • This setting can be done in advance on all devices extraction 28 associated with the cage 1, so that, after installation of an extraction device in the median plane of the cage, the housings 35 engage directly in the pins 11 of the cylinders work 4, 4 'placed in the disassembly position.
  • each bore 35 is less than the length of pin 11 of which only the extreme part commits to the accommodation thus constituted and it is extended, at its lower part, by a part substantially cylindrical forming a cradle 36 and extending in the direction of the cylinders 4, 4 '.
  • the relative reduction thus achieved is simply equal to the clearance left between the housings 35 and the pins 11 to allow threading easy of these.
  • the threading length, equal to the depth of the housing 35, must be simply sufficient to allow overhang of the cylinder without risk of matting of the parts support.
  • the support member 34 could have, for each working cylinder, a clamping member comprising two pairs of jaws, respectively lower and upper, maintained open to thread on pin 11 of each working cylinder 4, 4 'by axial displacement of the extraction device 28, each pair of jaws being centered on an axis placed in alignment with the axis of the working cylinder, at disassembly level of it.
  • each extractor device 28 is equipped to be able to remove, according to requirements, i.e. the two working cylinders 4, 4 ', either the two inserts each comprising a cylinder intermediate with the associated working cylinder and its two lateral support assemblies.
  • the lateral carriage 25 on which the device is mounted extraction 28 is arranged so that the latter can enter the space between chocks 6, 6 'of the intermediate cylinders 3, 3', in a position for which the rails 8, 8 'of the cage 1 are aligned with the rails 23, 23 'of the carriage handling 18 and the rails 9, 9 'of the carriage lateral 29.
  • the extraction device 28 which moves on the rails 32 is provided with removable gripping members who, if necessary, can commit to the attachment means 10, 10 'of the chocks 6, 6' of the intermediate cylinders 3, 3 'to remove the assembly of each insert with the working cylinder corresponding.
  • the extractor device 28 is provided, in the upper part and in the lower part of vertical attachment fingers 37, directed in opposite directions.
  • These fingers 37 are movable vertically and are controlled, for example, by a electric or hydraulic cylinder 38, of horizontal axis, connected to fingers 37 by a link system for control their vertical movement.
  • a link system for control their vertical movement we could also use a system controlled by cam.
  • each intermediate cylinder carry the sets lateral supports associated with the working cylinders corresponding.
  • the working cylinder 4 is carried by the member support 34 while the intermediate cylinder 3 as well as the lateral support assemblies are worn by the chocks 6, which via the rollers 7, roll successively on the rails 8, 23, 9 until the entire insert is placed on the side carriage 25.
  • the housings 35 are maintained, by sliding of the support member 34, at a constant level relative to the rail levels 8, 8 ', 9, 9', the translation operations can be done safely, without risk interference between the cylinders.
  • the handling trolley 18 is provided with a lateral carriage 25 carrying at least two reception boxes 29 each provided with a device extraction.
  • one boxes 29a is empty and can be placed in advance in line with the cage. After withdrawal of worn cylinders in the empty box 29a, the carriage 25 is move laterally to center in the midplane P 'of the cage, the neighboring box 29b in which have replacement cylinders have been placed in advance which can thus be introduced immediately into cage 1.
  • the device according to the invention also has the advantage of allowing selective replacement, i.e. working cylinders alone, or of the whole of each insert, respectively higher or lower.
  • the first box 29a is completely empty for allow exit, as required, either working cylinders 4, 4 'alone, i.e. all of each insert comprising an intermediate cylinder 3, the lateral support assemblies and the cylinder job.
  • working cylinders 4, 4 'alone i.e. all of each insert comprising an intermediate cylinder 3, the lateral support assemblies and the cylinder job.
  • the other cylinder, for example, the lower cylinder 4 ' is still supported by its forks support 62 'and therefore remains inside the cage 1 when the extraction device 28 is moved aside.
  • the fingers 37 can be controlled selectively so as to determine the withdrawal, with the extraction device 28, from one or other of the intermediate cylinders associated with support assemblies lateral.
  • the industrial truck 18 then brings the extraction device in maintenance position for replacing the cylinder.
  • the second box 29b of the carriage 25 is equipped in advance of two complete inserts, respectively upper and lower, each comprising a working cylinder, an intermediate cylinder and its support assemblies lateral.
  • each box of reception is equipped with an extraction device, working cylinders and cylinders intermediates are worn separately, respectively by the support member 34 and by the rails 9, 9 'of the chassis 29b.
  • the lateral carriage 25 is provided with three extractor devices 28; in that case two extractor devices are loaded with cylinders new, the other being empty to release a first game worn cylinders in the cage. It is then possible make two consecutive cylinder changes without having to bring back the whole of the main carriage and side carriage 25 in the workshop of rectification 20.
  • the device is not shown on figures only schematically but it involves all the auxiliary organs necessary for operation of the carriages 18, 25 and of the device extraction 28, in particular for winding and the unwinding of the electric cables and / or hydraulic lines connected to different moving parts.
  • the movements of the carriages can be ordered in various ways.
  • the gear motor group 33 which moves along a rack 33b could be replaced by a push chain powered by a motor mounted directly on the carriage 25.
  • the loading / unloading of new / used cylinders on the extractor devices 28 of the lateral carriage is performed in a rectification workshop 20 located at side of hall 21 of the rolling mill.
  • one or more storage racks mechanized 40 can be placed in front of the carriage handling 18 when it is in its most remote position inside the workshop rectification 20.
  • Figure 6 is a cross-sectional view of such a device which is mounted on a frame lower 42 carried by wheels 43 rolling on rails 44 parallel to the direction of advance of the strip to be laminated, i.e. perpendicular to axes of the cylinders in place in the cage 1.
  • the device comprises two racks 40, 40 'arranged side by side on a frame 47 resting on the frame 42 by means of four supports 51 in height adjustable, which may consist, for example, of screw-actuators actuated synchronously by through link bars 52 and cross references angle 53, by a geared motor group 56 allowing a vertical up and down movement of the frame 47 carrying the racks 40, 40 '.
  • height adjustable which may consist, for example, of screw-actuators actuated synchronously by through link bars 52 and cross references angle 53, by a geared motor group 56 allowing a vertical up and down movement of the frame 47 carrying the racks 40, 40 '.
  • Each rack consists of a chassis 46 in U shape supporting two superimposed bed bases, respectively upper 48 and lower 49, equipped each of a series of 50 parallel cradles and defining two levels of reception.
  • the upper level 48 cradles are at right those of the lower level 49 and the distance vertical between the two reception levels is equal to the vertical distance between the axes of blind bores 35 of the support member 34.
  • each level comprises five cradles 50 each rack 40 can therefore receive five pairs of working cylinders 4.
  • the box springs 46 are open on the right side on figure so that by a movement of longitudinal translation to the left of the device extraction 28, the two working cylinders 4, 4 ' carried by the support member 34 can be placed above two superimposed cradles 50 which have been left free on the two box springs 48 and 49.
  • the support member 34 being discharged, it is possible to move back the extraction device 28 to release the journals of worn cylinders then center a transverse movement of the rack 40 to control, depending on the program to be carried out, a pair of new cylinders on the mediator plane of the device extraction. This is then advanced so that the housings 35 of the support member 34 engage on the pins of the two replacement cylinders.
  • the rack 40 can then be moved aside to allow axial movement of the carriage handling 18 which is placed on hold next to of cage 1, the free space of the carriage 25 being centered on the clamping plane P '.
  • the device is thus ready to proceed with the removal of the cylinders in service and replacing them with new ones cylinders taken from rack 40 at the time indicated by the rolling program.
  • the main carriage 18 is on the side of the rack 40 opposite the rolling stand 1.
  • each cage of rolling mill would be equipped with a main carriage 18 with side carriage 25 and extractor device 28, each storage rack 40 working cylinders 4 can serve several cages.
  • the handling cart 18 is then approached of cage 1, in the position illustrated by the figure 1, the extractor device 28 being moved back towards the right in the figure.
  • One of the boxes of the carriage 25 is empty and is centered on the median plane P 'of the cage by lateral movement of the carriage 25.
  • the extractor device 28 is then advanced and allows, as indicated, to remove either the two working cylinders only, i.e. the two inserts and, by retraction of the extractor device 28, the cylinders are placed on the cart 25. The latter is then moved to center the cylinders of replacement which are introduced into the cage in commanding reverse operations.
  • the extractor device 28 When the entire insert has been removed, the extractor device 28 is separated from the chocks intermediate cylinders and can be advanced to place the working cylinders alone in two empty cradles of rack 40 previously centered on the mediator plane of the extractor device 28, the rest of the insert remaining in box 29 of the carriage lateral 25. Therefore, we can proceed to the verification and, possibly, replacement of inserts without risk of damaging the cylinders job.
  • the extraction device 28 goes back on the carriage 25 and, after unloading, is moved back to clear the rack 40.
  • This is then moved to center the new working cylinders on the median plane of the extraction device 28, is then advanced to take over the new cylinders.
  • the handling 18 can again be advanced until the cage to be ready for a new operation of replacement.
  • the working cylinders are carried, in disassembly position, by forks 62, 62 ' but other support devices could be used to hold working cylinders separated, at a constant level, from the cylinders intermediaries.
  • these cylinders could be used to adjust the level axes of the working cylinders at the axes housings 35 of the support member 34 and, then determine the lowering of either working cylinders to allow its grip load by the support member 34.
  • the lower 4 'working cylinder rests on the lower intermediate cylinder 3 '
  • the lower support assembly E2 is supported by adjustable shims 17b, these can be used so as to place the axis of the working cylinder lower 4 'at the level of the housing axis 35' from the support member 34, the level of the cylinder higher work 4 being determined, as previously by the forks 62.
  • the handling trolley 18 could carry only one extraction device 28 axially displaceable.
  • each of them is equipped with a device extractor.
  • the carriage 42 carries two racks 40, 40 'simply placed on the frame 47. It is therefore possible, by means of a lifter, remove one of the racks to replace all the cylinders, the other rack allowing to continue operations according to the rolling. But we could also use just one rack with sufficient number of places for working cylinders.
  • a rack could be used. storage with a single adjustable level bed base for replace only one working cylinder.
  • the invention is specially suitable for replacing working cylinders only or complete inserts in a "Z-High" type rolling mill but could be used in any rolling mill using cylinders devoid of chocks.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Feeding Of Workpieces (AREA)
  • Crushing And Grinding (AREA)
  • Replacement Of Web Rolls (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
EP98402518A 1997-10-10 1998-10-09 Walzenwechselvorrichtung für Arbeitswalzen oder Zwischenwalzen von Walzgerüsten und Einlagerungsvorrichtung Expired - Lifetime EP0908246B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9712705 1997-10-10
FR9712705A FR2769525B1 (fr) 1997-10-10 1997-10-10 Dispositif de changement des cylindres de travail et/ou des cylindres intermediaires d'une cage de laminoir, et ratelier de stockage pour un tel dispositif

Publications (2)

Publication Number Publication Date
EP0908246A1 true EP0908246A1 (de) 1999-04-14
EP0908246B1 EP0908246B1 (de) 2003-04-16

Family

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EP98402518A Expired - Lifetime EP0908246B1 (de) 1997-10-10 1998-10-09 Walzenwechselvorrichtung für Arbeitswalzen oder Zwischenwalzen von Walzgerüsten und Einlagerungsvorrichtung

Country Status (7)

Country Link
US (1) US6098439A (de)
EP (1) EP0908246B1 (de)
AT (1) ATE237413T1 (de)
CA (1) CA2250498C (de)
DE (1) DE69813435T2 (de)
ES (1) ES2192755T3 (de)
FR (1) FR2769525B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1074382A1 (de) * 1999-08-06 2001-02-07 Giovanni Gambini Konvertierbare Maschine zur Oberflächenbehandlung von Papier
EP1136143A2 (de) * 2000-03-16 2001-09-26 ACHENBACH BUSCHHÜTTEN GmbH Walzenwechselvorrichtung für Walzgerüste, insbesondere Sextowalzgerüste
WO2012072274A1 (fr) 2010-12-02 2012-06-07 Siemens Vai Metals Technologies Sas Installation pour et methode de changement des cylindres et/ou grappes d'une cage de laminage; systeme de verrouillage et de clamage; cage de laminage comprenant de tels systemes

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DE10138588A1 (de) * 2001-08-06 2003-02-20 Sms Demag Ag Einrichtung zum Wechseln der Arbeits- und Stützwalzen eines Bandwalzwerkes
JP4135351B2 (ja) * 2001-10-12 2008-08-20 株式会社日立製作所 多列圧延機及びその使用方法並びに圧延設備
FR2846579B1 (fr) * 2002-11-05 2006-05-05 Vai Clecim Procede pour elargir la gamme de production d'une installation de laminage de produits metalliques et installation pour la mise en oeuvre du procede
CN100381219C (zh) * 2004-01-20 2008-04-16 郑红专 多辊轧机换辊装置
CA2635081C (en) * 2006-01-09 2013-09-10 Sms Demag Ag Method and device for handling/transporting working rolls and/or support rolls
JP5264140B2 (ja) * 2007-10-16 2013-08-14 Ｉｈｉメタルテック株式会社 マグネシウム合金熱間圧延装置
US10245743B2 (en) * 2009-05-13 2019-04-02 Bobst Sa Waste stripping unit with simplified tool adjustment in a packaging production machine
DE102009060642A1 (de) 2009-07-07 2011-01-13 Sms Siemag Ag 4-Rollen-/-Rollen/18HS Rollenwalzgerüst in Kassettenbauweise
ITTO20120001A1 (it) * 2012-01-04 2013-07-05 Mino S P A Laminatoio multicilindro, in particolare di tipo sesto
EP2777832A1 (de) * 2013-03-13 2014-09-17 Siemens VAI Metals Technologies GmbH Vorrichtung zur Inbetriebsetzung der Drehbewegung der Arbeitswalzen eines Walzwerks, und Methode zum Auswechseln der genannten Walzen
WO2015050823A2 (en) 2013-10-02 2015-04-09 Fives Bronx, Inc. Roll change apparatus
DE102014005331B3 (de) * 2014-02-11 2015-05-21 Sms Meer Gmbh Werkzeugwechselsystem und -verfahren sowie Reckwalze
FR3108047B1 (fr) * 2020-03-10 2022-04-01 Fives Dms Outil et procédé de changement de cylindre de travail dans laminoir
CN112008643A (zh) * 2020-08-11 2020-12-01 阜阳卷烟材料厂 一种滤棒开松系统更换橡塑辊的辅助装置及更换方法
CN115847353B (zh) * 2022-11-09 2023-06-09 东莞海裕百特智能装备有限公司 一种辊压机快速换辊装置及方法

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JPS5468754A (en) * 1977-11-11 1979-06-02 Hitachi Ltd Roll rearranging device and its handling method
JPS5496457A (en) * 1978-01-18 1979-07-30 Hitachi Ltd Rearranging apparatus for rolls
US4771626A (en) * 1986-03-14 1988-09-20 Nippon Steel Corporation Apparatus for roll-changing
JPH0366405A (ja) * 1989-08-02 1991-03-22 Hitachi Ltd 圧延機のロール組替装置
EP0684089A2 (de) * 1994-05-23 1995-11-29 DAVY McKEE (POOLE) LIMITED Vorrichtung zum Walzenwechsel für ein Vielwalzengerüst

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JPS6056564B2 (ja) * 1980-06-18 1985-12-11 株式会社日立製作所 圧延機のロ−ル組替装置
DE3925408C1 (de) * 1989-08-01 1990-04-12 Sundwiger Eisenhuette Maschinenfabrik Grah & Co, 5870 Hemer, De

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US3866455A (en) * 1973-12-28 1975-02-18 Mesta Machine Co Mill roll changing system including a roll buggy
JPS5468754A (en) * 1977-11-11 1979-06-02 Hitachi Ltd Roll rearranging device and its handling method
JPS5496457A (en) * 1978-01-18 1979-07-30 Hitachi Ltd Rearranging apparatus for rolls
US4771626A (en) * 1986-03-14 1988-09-20 Nippon Steel Corporation Apparatus for roll-changing
JPH0366405A (ja) * 1989-08-02 1991-03-22 Hitachi Ltd 圧延機のロール組替装置
EP0684089A2 (de) * 1994-05-23 1995-11-29 DAVY McKEE (POOLE) LIMITED Vorrichtung zum Walzenwechsel für ein Vielwalzengerüst

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PATENT ABSTRACTS OF JAPAN vol. 015, no. 222 (M - 1121) 6 June 1991 (1991-06-06) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1074382A1 (de) * 1999-08-06 2001-02-07 Giovanni Gambini Konvertierbare Maschine zur Oberflächenbehandlung von Papier
US6688366B1 (en) 1999-08-06 2004-02-10 Giovanni Gambini Paper-converting machine with rapidly changing emboss cylinder mechanism
EP1136143A2 (de) * 2000-03-16 2001-09-26 ACHENBACH BUSCHHÜTTEN GmbH Walzenwechselvorrichtung für Walzgerüste, insbesondere Sextowalzgerüste
EP1136143A3 (de) * 2000-03-16 2004-01-28 ACHENBACH BUSCHHÜTTEN GmbH Walzenwechselvorrichtung für Walzgerüste, insbesondere Sextowalzgerüste
WO2012072274A1 (fr) 2010-12-02 2012-06-07 Siemens Vai Metals Technologies Sas Installation pour et methode de changement des cylindres et/ou grappes d'une cage de laminage; systeme de verrouillage et de clamage; cage de laminage comprenant de tels systemes
CN103237608A (zh) * 2010-12-02 2013-08-07 西门子奥钢联冶金技术有限公司 更换轧机机架的轧辊和/或轧辊组的设备和方法；锁闭和夹紧系统；包括这种系统的轧机机架
CN103237608B (zh) * 2010-12-02 2015-11-25 西门子奥钢联冶金技术有限公司 更换轧机机架的轧辊和/或轧辊组的设备和方法；锁闭和夹紧系统；包括这种系统的轧机机架

Also Published As

Publication number Publication date
DE69813435D1 (de) 2003-05-22
ATE237413T1 (de) 2003-05-15
FR2769525A1 (fr) 1999-04-16
CA2250498A1 (fr) 1999-04-10
DE69813435T2 (de) 2003-10-16
CA2250498C (fr) 2007-04-10
US6098439A (en) 2000-08-08
FR2769525B1 (fr) 1999-12-31
EP0908246B1 (de) 2003-04-16
ES2192755T3 (es) 2003-10-16

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