EP1918036B1 - Device for straightening a metal strip - Google Patents
Device for straightening a metal strip Download PDFInfo
- Publication number
- EP1918036B1 EP1918036B1 EP20070301523 EP07301523A EP1918036B1 EP 1918036 B1 EP1918036 B1 EP 1918036B1 EP 20070301523 EP20070301523 EP 20070301523 EP 07301523 A EP07301523 A EP 07301523A EP 1918036 B1 EP1918036 B1 EP 1918036B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- unit
- rolls
- support frame
- axis
- swivelling
- 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.)
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- 239000002184 metal Substances 0.000 title claims description 6
- 238000005452 bending Methods 0.000 claims description 61
- 238000012423 maintenance Methods 0.000 claims description 20
- 230000000284 resting effect Effects 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 7
- 238000009987 spinning Methods 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 description 26
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/05—Stretching combined with rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
Definitions
- the subject of the invention is a tensile planing device for a metal strip and is especially applicable to leveling devices used in the different sectors of metallurgy, in order to improve the mechanical characteristics and the flatness of the metal strips produced. in a rolling plant.
- a leveling device comprises means for controlling the movement of a metal strip placed under tension, along a longitudinal axis, by passing over a certain number of rollers placed respectively above and below the plane. running the strip so as to define a corrugated path, the strip thus being subjected alternately, on both sides, to deformations under traction to planing.
- the device comprises, inside a frame forming a cage with two amounts spaced apart on either side of the longitudinal axis of travel, at least two bending units offset longituditunalement, respectively a higher unit and a lower unit respectively placed above and below the strip and separate control means for the vertical displacements of each bending unit for adjusting the nesting of the rollers.
- Each bending unit comprises a working roll on which the strip is applied along an angular sector.
- this working roller must have a small diameter and thus bears laterally on rollers or support rollers.
- These rollers are rotatably mounted about axes perpendicular to the longitudinal axis of travel, on bearings carried by a support frame extending transversely between two ends placed on either side of the strip.
- Vertical displacement means such as cylinders, resting on the frame, allow to vary the level of the working rollers between a rest position separated from the band and a working position at an adjustable nesting level allowing apply to the band the desired tensile-flexion effects.
- At least one of the work rolls must be rotated about its axis by control means which are usually placed on a lateral side of the frame, said drive side, the operator being placed, with his console. command, on the other side said operator side.
- each bending unit usually forms a removable cassette which, on the one hand, has to be moved vertically for adjustment of the nesting and, on the other hand, can be withdrawn as a whole from the frame of the machine. towards the operator side, by transverse displacement, perpendicular to the longitudinal axis of travel of the strip.
- the cassette is provided at its two ends, respectively front and rear, of rollers rolling on guide rails which extend between the two uprights of the frame, transversely to the axis of travel of the strip.
- the guide rails are fixed at a predetermined level on the two amounts of the frame.
- the support frame of all the rollers forms a transverse beam which is removably connected to the vertical adjustment cylinders and rests on the guide rails by two pairs of rollers, each carried by an arm pivotally mounted against the action of a spring so as to allow the vertical displacement of the cassette thus produced, in the working position, the beam being biased upwardly by the springs, in a high position at the level of the rails; which allows the transverse displacement of the cassette.
- the cassette it is advantageous that it is carried, at its front end turned on the operator side, by a dismounting carriage provided with a means removable support of an external support member of the cassette of which only the rear end rests on the guide rails, by an internal support member.
- the transverse beam forming the support frame of the rollers is removably attached at both its front and rear ends to the adjustment cylinders of the nesting bearing on the two uprights of the frame.
- the cassette is lowered to a disassembly level for which its rear end is supported by pebbles on the rails fixed guide, its front end coming to rest on a disassembly carriage movable transversely.
- the nesting adjustment cylinders are then disconnected from the cassette which can be removed from the frame, its front end being driven by the dismounting carriage and its sliding rear end on the transverse guide rails which are fixed on the frame, at the level of the frame. desired.
- the support frame of the rollers is pivotally mounted about an axis, between a planing position for which the rollers are facing downwards and a maintenance position for which the rollers are facing up, which facilitates maintenance or replacement operations.
- the support frame of the rollers is pivotally mounted about an axis perpendicular to the longitudinal axis of travel, rotating on two aligned bearings placed, respectively, at the front on an external support member resting on the carriage of disassembly and, at the rear, on an internal support member resting on the guide rails.
- the document EP-A-0 446 130 proposes a simpler layout, partly incorporating that of the document EP-0 298 852 .
- the internal bearing member carrying the rear end of the support frame of the rollers rests on the fixed guide rails by means of rollers mounted on a pivoting arm so as to allow the nesting settings and recalled by a spring in the high position allowing disassembly.
- the front end of the chassis rests on a disassembly carriage movable transversely.
- the disconnection between the nesting adjusting jacks and the support frame of the rollers can then be done by simple transverse sliding, inasmuch as this movement takes place at the upper level, rolling on fixed rails.
- the disassembly frame is equipped with a removable means, movable vertically, supporting the external support member placed at the front end of the support frame of the rollers.
- the guide rails move vertically under the action of adjustment cylinders of the nesting.
- the document EP-A-1 162 008 for example describes an arrangement of this type in which the transverse rails are formed on both sides of a frame on which support the adjustment cylinders of the nesting.
- the support frame of the rollers is then carried by a transverse beam resting at its two ends, by rollers, on the rails formed on both sides of said frame.
- this beam is provided at its front end with an external support member which can be supported by a dismounting carriage, its rear end rolling on the guide rails.
- the external support member carrying the front end of the cassette, forms a trunnion defining the axis of pivoting of the support frame of the rollers and rotating in a bearing formed on an auxiliary frame which bears on the trolley of disassembly when the cassette is lowered by the nest adjustment jacks.
- the reversal of the cassette is controlled by a pinion wedged on the trunnion forming the external support member and controlled manually, by means of a worm gear, by means of a flywheel rotatably mounted on said frame auxiliary support on the disassembly trolley.
- a pinion wedged on the trunnion forming the external support member and controlled manually, by means of a worm gear, by means of a flywheel rotatably mounted on said frame auxiliary support on the disassembly trolley.
- the two support members respectively internal and external, of the support frame of the rollers, define a pivot axis which can pass substantially through the center of gravity of the frame. The reversal of it can be done manually, without the need to use a mechanical gear reduction device.
- the cassette is carried, as we have seen, by a transverse beam taking a sliding support on the guide rails which move vertically under the action of nesting adjustment cylinders.
- the support frame of the rollers is pivotally mounted on this sliding beam but the pivot axis must be shifted laterally so that, in the inverted position, all the rollers are placed next to the sliding beam so that to facilitate maintenance.
- This pivoting movement can be controlled manually but must, however, be assisted by a pneumatic cylinder that balances the weight of the roll support frame and holds it in the upside down position.
- the object of the invention is therefore to avoid such drawbacks by means of improvements to the demountable cassette leveling devices, making it possible to fully automate the withdrawal and turning operations of all the rollers, in particular of the unit. greater bending, so that the manual maintenance or replacement operations are performed only after turning, away from the frame of the machine.
- the invention thus makes it possible to avoid, as far as possible, the access of an operator to the vicinity of the machine, in particular when the latter remains in operation and when the running of the tape is continued.
- the invention therefore applies, in general, to a planing device of a metal strip according to claim 1.
- the two support members respectively external and internal, define a pivot axis around which the support frame of the set of rollers and the member, in particular of the motor, control of the pivoting is carried by the dismounting carriage and comes to engage removably, in the disassembly position of the bending unit, on a control part of the pivot, centered on said pivot axis and set in rotation on the support frame.
- the drive member actuates a toothed piece in the form of a rack that is displaceable longitudinally and on which, in the disassembly position of the bending unit, meshing with a toothed gear, centered on the pivot axis of the frame of support rolls and rotated on it.
- the drive member can also directly control the pivoting of the support frame of the rollers by means of a removable coupling means.
- the drive member may comprise a pinion gear or a worm gear driven in rotation about its axis by a motor and on which meshing, by displacement parallel to a meshing plane, a toothed gear conjugate wedged in rotation on the support frame of the rollers and centered on the pivot axis thereof.
- the device comprises a removable means for supporting the bending unit, mounted movably on the disassembly carriage, orthogonal to the axis of pivoting of the set of rollers, between a spaced position allowing the vertical displacement of the bending unit inside the frame and an engagement position of the support means on the external support member.
- this removable means for supporting the bending unit is carried by an auxiliary frame movably mounted on the disassembly carriage, orthogonal to the axis of pivoting of the set of rollers, between a remote position allowing the vertical displacement of the bending unit inside the frame and an engagement position of the support means on the external support member of the support frame of the rollers.
- the drive member is mounted on the auxiliary frame and is engaged removably on a control part integral in rotation of the support frame of the rollers, in the disassembly position of the cassette.
- the machine comprises at least one dismounting carriage on which are mounted at least two auxiliary frames each centered on a leveling plane, and each carrying means for handling the corresponding upper bending unit, as well as means for controlling the pivoting of all the rollers of the bending unit.
- the means for handling the front end of a cassette and the external support member thereof comprise two pieces of conjugate shapes engaging one into the other by displacement orthogonal to the axis of the working roller, for centering the pivot control means in a meshing plane with the conjugated pinion wedged on the support frame of the rollers.
- the invention can also be applied to another type of leveling device in which the support frame of the set of rollers is carried by a beam slidably mounted transversely on rails movable vertically between a raised position and a lowered position. planing, and on which bears the disassembly carriage for the transverse displacement of the flexion unit.
- this sliding beam can carry, then a autonomous motor unit for controlling the pivoting of the chassis between the working position of the rollers and an inverted position.
- the autonomous motor unit may be a remotely actuated cylinder, bearing in one direction on the sliding beam and in the other direction on a rotationally integral part of the support frame of the set of rollers.
- the self-operating pivotal control unit can also be mounted on the disassembly carriage and be connected by a removable coupling means to a chassis pivot control member, when the sliding beam is supported by the carriage. dismantling.
- the support frame of the rollers of the upper bending unit is rotatably mounted about an axis perpendicular to the axis of travel, on two opposite journals, respectively an external journal rotating in a bearing bearing releasably on the disassembly carriage and an inner journal rotating in a bearing bearing on a guide path, the center of gravity of the entire flexion unit is placed substantially on the axis of the two pivot pins.
- the outer trunnion may carry a toothed pinion integral in rotation with the support frame of the rollers and on which the drive member for controlling the pivoting of said frame into the disassembly position of the bending unit engages.
- the figure 1 is a side view of a leveling cage provided with a disassembly system of the flexion units according to the invention.
- the figure 2 is a partial view showing the disassembly of an upper bending unit, in section along the line AA of the figure 1 .
- the leveling machine shown, in side view, on the figure 1 is of the type described in the document EP-A-0 446 130 and therefore comprises a leveling cage comprising a frame 1 having two uprights 10 spaced apart on either side of a longitudinal axis of travel of the strip to be glide, parallel to the plane of the figure 1 , between which are placed several sets of planing as well as, if necessary, a decambrage unit and a roll called "tile corrector".
- the machine is equipped with two identical leveling assemblies E, E 'each having two bending units placed on each side. and on the other hand, a planar plane P of the band to be hovered, respectively an upper bending unit 20, 20 ', placed above the plane of displacement P and a lower bending unit, placed below said plane and not shown in the drawings.
- Each bending unit centered on a vertical median plane Q, Q ' can be withdrawn from the cage, by transverse displacement, through an opening 11, 11' formed at least in the upright 10 of the frame 1 placed on the disassembly that is to say, normally, the operator side of the machine, right on the figure 2 .
- each bending unit forms a cassette 20 displaceable in block, perpendicular to the axis of travel of the strip, and provided, at its front end, in the direction of withdrawal, an external support member 5 which can be supported by a disassembly carriage 3 and, at its rear end, an internal support member 6 which, for the displacement of the cassette 20 rolls on guide rails 7 extending transversely between the two uprights 10 of the cage.
- Each cassette 20 comprises a frame 21 for supporting a set of leveling rollers 22 comprising, as usual, a working roller, at least two lateral support rollers and, where appropriate, three rows of support rollers.
- the support frame 21 for the rollers extends transversely to the axis of travel between a front end, on the operator side, provided with an external support member 5 resting on the dismounting carriage 3 and a rear end, on the side opposite, provided with an internal support member 6 resting, by means of rollers 61, on guide rails 12, extending transversely between the two amounts of the cage and extended slightly outside the it by a portion 12a allowing the complete removal of the cassette 20.
- the dismounting carriage 3 is slidably mounted perpendicularly to the axis of travel, on rails R fixed to the foundation and, consequently, perpendicular to the plane of the figure 1 , the displacement of the carriage 3 being controlled by a jack 13 extending below the carriage 3 and whose rod 13a is articulated on a yoke fixed to the lower part of the carriage 3.
- the dismounting carriage 3 is equipped with separate means for supporting the various bending units to allow the dismantling of a single unit, or of a complete planing unit with an upper unit and a lower unit and comprises for this purpose, a removable support means carried by an auxiliary frame 4 movable vertically relative to the main frame of the dismounting carriage 3, between a raised position of support and a lowered position allowing the vertical displacement of the bending unit 20 for adjusting the planing.
- the dismounting carriage 3 comprises a main frame carrying an easel 31 on which are mounted vertically sliding two auxiliary frames 4, 4' respectively carrying separate means of support of each of the upper bending units 20, 20 'of the two sets E, E', for the withdrawal thereof outside the cage 1.
- the bridge 31 comprises a horizontal cross and a transverse support plate 32 connected by uprights 33 to the crossbar 31 and on which are fixed two pairs of vertical rails 34 centered on the median planes Q, Q 'of the two bending units 20, 20 '.
- Each auxiliary frame 4, 4 comprises a guide portion 41 mounted vertically sliding on a pair of slides 34, and carrying, at its upper part, a horizontal flange 42 on which is mounted a means of support 40 of the unit bending 20.
- the figure 1 shows, by a partial tear, the support means 40 of the bending unit 20 'of the leveling assembly E' but the auxiliary frame 4 corresponding to the other bending unit 20 is equipped in the same way .
- This pick-up means 40 is simply constituted by an upwardly open V-shaped piece fixed to the horizontal flange 42 of the auxiliary frame.
- a jack 34 whose body bears, by a hinge, on the support plate 32 and whose rod is articulated on a yoke attached to the auxiliary frame 4, can control the sliding of the latter upwards, so as to engage the V-shaped part 40 on a piece 53 having a conjugate V-shaped profile and provided, at its lower part, with a hole into which a pin 43 associated with the V-piece 40 and centered on the median plane Q engages. (Q ') of the bending unit.
- This centering piece 53 is part of the external support member 5 which, in the example shown, comprises a shaft end 50 formed projecting on the front end of the cassette 20.
- the bending unit 20 in its working position inside the frame 1, the bending unit 20 must be able to move vertically for the adjustment of the nesting and the cage 1 is provided, for this purpose, with cylinders 14 each having a body fixed on the cage, for example on a part 10a in the form of a console fixed to the upper part of the upright 10 of the cage, and a rod 14a which is connected to the bending unit 20 to allow the vertical movement thereof in both directions, respectively downwards for adjusting the nesting at the desired level and upwards to bring the cassette back to its desired position. level of disassembly.
- the cassette 20 To allow its transverse displacement, the cassette 20 must be removably connected to the rods of the cylinders 14.
- the guide rails are fixed on the amounts of the cage, at a constant level.
- the cassette is thus provided with sliding fastening means which, by transverse displacement, are engaged on the rods of the cylinders provided, for this purpose, conjugate parts attachment by translation.
- the internal support member placed at the rear end thereof consists of rollers mounted on a pivoting arm against the action of a spring so to allow, by pivoting the arm, the lowering of the cassette in the planing position and its return, by the springs, in the upper disassembly position.
- the invention can be applied to such an arrangement.
- the two guide rails on which the rollers 61 constituting the internal support member 6, at the rear end of the cassette 20, are constituted by the lateral sides of a plate 12 on which support, directly, the cylinders 14 for adjusting the nesting.
- the rod 14a of each cylinder 14 can be screwed onto a connecting piece 15 passing through an orifice of the plate 12 and clamped thereto by a counter-nut, the plate 12 can thus move vertically towards the up and down, under the action of the two cylinders 14.
- the cassette 20 rests on the guide plate 12, not only at its rear end, by the rollers 61 of the internal support member 6 but also, at its front end, by rollers 51 rotatably mounted to the end of arms 51 fixed on the frame 21 of the cassette, the latter being provided at its two ends with lubricated guide plates 23a, 23b which can slide along vertical rails 11 provided on each upright 10 of the cage, on each side of the opening 11 for passage of the cassette.
- the support frame 21 of the rollers is pivotally mounted about a horizontal axis x ', x, parallel to the axes of the rollers.
- this pivot axis is defined by the two support members, respectively external 5 and internal 6 of the frame 21.
- the shaft end 50 forming the internal support member 5 constitutes a journal rotatably mounted about its axis x ', x, on a bearing body housed in the V-shaped part 53 which can engage removably in the support part 40 of the dismounting carriage 3, as indicated above.
- the frame 21 for supporting the rollers is pivotally mounted about the axis x'x on a pin 60 centered on the same horizontal axis x'x as the external pin 50 and rotating in a bearing 63 carried by the internal support body 6.
- the cassette 20 is brought inside the cage 1 by the carriage 3 by rolling on the two edges of the plate 12.
- the cassette is then suspended from this plate by the two pairs of rollers, respectively rear 61 and before 51, the guide plates 23a, 23b being centered on the rails of the two uprights 10 of the cage 1.
- the upper face 20a of the cassette is provided with two studs 24 which are centered on the axes of the two cylinders 14 of vertical displacement, the thickness of these studs 24 being determined so as to leave, between the stud 24 and the lower end of the connecting piece 15, a simple clearance necessary for the transverse sliding of the cassette on the lateral edges of the guide plate 12.
- the cassette 20 is thus suspended from the plate 12, the external support member 5 can be released by lowering the auxiliary frame 4 of the dismounting carriage 3.
- the double-acting cylinders 14 can then control the vertical displacements of the cassette 20, downwards for the adjustment of the nesting, by pressing on the studs 24 and upwards for the return to the high position by means of the plate 12 on which bear the rollers 51, 61.
- the corresponding frame 4, 4' is raised so that the support part 40 engages on the conjugate part 41 of the body 5, by slightly lifting the cassette which can then be removed from the cage 1 by means of the dismounting carriage 3, rolling on the rollers 61 placed at its rear end.
- each auxiliary chassis 4, 4 ' carries means 7 mounted on the upper flange 42, for controlling the pivoting of the cassette around the axis x'x defined by the two bearings, respectively before 53 and rear 63.
- the means 7 for controlling the reversal of the cassette comprises a horizontal rack 71 slidable, perpendicular to the axis x'x, on a slideway 43, under the action of a jack 72 supported, by a hinge, on a horizontal extension of the upper flange 42 of the auxiliary chassis 4.
- this rack 71 engages a toothed gear 54 centered on the x'x axis and rotated at the end of the pin 50.
- the jack 72 can control the pivoting 180 ° of the support frame 21 of the rollers 22 which are then turned upwards, in the position shown, on the figure 1 for the cassette 20 centered on the vertical plane Q, the rear rollers 61 of the internal support member 6 resting on the guide plate 12.
- the x'x axis of rotation on which are centered the two pads 55, 63 passes through the center of gravity of the entire support frame 21 of the rollers, which is thus balanced so that the pivoting does not occur. asks for a relatively weak couple.
- the actuators 72 for controlling the pivoting of the cassette, as well as the jacks 34 for operating the auxiliary chassis 4, 4 'and the jack 13 for operating the dismounting carriage 3 can be controlled remotely.
- the duration of the intervention may be limited to the time simply necessary for a check of the condition of the rollers 22, their cleaning or their replacement, or for the attachment of slings allowing the transfer of the flexion unit to a workshop using a hoist.
- the rack 71 controlled by the jack 72 could be replaced by a screw forming a helical rack engaging, by vertical displacement of the frame 4, on a helical gear pinion wedged on the pin 50, this screw being driven in rotation about its axis by a motor carried by the sole 42.
- a motor rotating about an axis parallel to the x'x pivot axis of the cassette and axially slidably mounted on the sole 42 of the frame 4, this motor can drive a pinion which is engaged on the pinion 54 to conjugate toothing by axial displacement, parallel to the plane of engagement.
- the engine could also be centered directly on the pivot axis x'x and connected to the journal 50 by a system with grooves and grooves or by any other removable coupling system.
- the transverse guide rails for removal of the cassette move vertically therewith under the action of the adjustment cylinders of the nesting.
- the invention can also be applied to the other known arrangements described, for example, in the documents EP-0 446 130 or JP-10-34236 , in which the cassette comes to rest, in the retracted position, on rails fixed at a constant level on the two uprights of the frame.
- the driving member of the pivoting of the cassette could be mounted on the auxiliary frame movable vertically on the dismounting carriage and carrying the means removable support that is engaged on the trunnion forming the external support member of the frame in the upper position thereof, at the disassembly rails.
- the pinion mounted on the trunnion forming the external support member of the support frame of the rollers could be engaged, in the low position of the frame, on a conjugated control means, driven by a motor member mounted on the frame dismantling.
- the invention can also be applied to a layout of the type described in the document EP-A-1 162 008 , in which the two external and internal support members 5 are formed at the ends of a transverse beam on which is pivotally mounted the support frame of the rollers, the latter then being pivotally mounted on two journals rotating in spaced apart bearings mounted at both ends of this beam.
- the pivoting of the support frame of the rollers could still be controlled by a motor member mounted on said transverse beam.
- the cylinder provided in the document EP-A-1 162 008 to balance the weight of the support frame of the rollers could control the rotation thereof.
- the pivot control motor member could thus be mounted on the dismounting carriage and actuating a detachable coupling means meshing, in the disassembly position, with a control part centered on the pivot axis of the frame and set in rotation thereon.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Handcart (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
L'invention a pour objet un dispositif de planage sous traction d'une bande métallique et s'applique spécialement aux dispositifs de planage utilisés dans les différents secteurs de la métallurgie, afin d'améliorer les caractéristiques mécaniques et la planéité des bandes de métal produites dans une installation de laminage.The subject of the invention is a tensile planing device for a metal strip and is especially applicable to leveling devices used in the different sectors of metallurgy, in order to improve the mechanical characteristics and the flatness of the metal strips produced. in a rolling plant.
D'une façon générale, un dispositif de planage comprend des moyens de commande du défilement d'une bande métallique mise sous traction, suivant un axe longitudinal, en passant sur un certain nombre de rouleaux placés respectivement au-dessus et en-dessous du plan de défilement de la bande de façon à définir un trajet ondulé, la bande étant ainsi soumise alternativement, sur ses deux faces, à des déformations sous traction permettant le planage.In general, a leveling device comprises means for controlling the movement of a metal strip placed under tension, along a longitudinal axis, by passing over a certain number of rollers placed respectively above and below the plane. running the strip so as to define a corrugated path, the strip thus being subjected alternately, on both sides, to deformations under traction to planing.
A cet effet, le dispositif comporte, à l'intérieur d'un bâti formant une cage avec deux montants écartés de part et d'autre de l'axe longitudinal de défilement, au moins deux unités de flexion décalées longitunalement, respectivement une unité supérieure et une unité inférieure placées respectivement au-dessus et en-dessous de la bande et des moyens de commande séparée des déplacements verticaux de chaque unité de flexion pour le réglage de l'imbrication des rouleaux.For this purpose, the device comprises, inside a frame forming a cage with two amounts spaced apart on either side of the longitudinal axis of travel, at least two bending units offset longituditunalement, respectively a higher unit and a lower unit respectively placed above and below the strip and separate control means for the vertical displacements of each bending unit for adjusting the nesting of the rollers.
Chaque unité de flexion comporte un rouleau de travail sur lequel est appliquée la bande suivant un secteur angulaire. Pour effectuer l'effet de planage souhaité, ce rouleau de travail doit avoir un assez faible diamètre et prend donc appui latéralement sur des rouleaux ou galets de soutien. Ces rouleaux sont montés rotatifs autour d'axes perpendiculaires à l'axe longitudinal de défilement, sur des paliers portés par un châssis de support s'étendant transversalement entre deux extrémités placées de part et d'autre de la bande. Des moyens de déplacement vertical tels que des vérins, prenant appui sur le bâti, permettent de faire varier le niveau des rouleaux de travail entre une position de repos écartée de la bande et une position de travail à un niveau d'imbrication réglable permettant d'appliquer sur la bande les effets de traction-flexion souhaités.Each bending unit comprises a working roll on which the strip is applied along an angular sector. To achieve the desired leveling effect, this working roller must have a small diameter and thus bears laterally on rollers or support rollers. These rollers are rotatably mounted about axes perpendicular to the longitudinal axis of travel, on bearings carried by a support frame extending transversely between two ends placed on either side of the strip. Vertical displacement means such as cylinders, resting on the frame, allow to vary the level of the working rollers between a rest position separated from the band and a working position at an adjustable nesting level allowing apply to the band the desired tensile-flexion effects.
Au moins l'un des rouleaux de travail doit être entraîné en rotation autour de son axe par des moyens de commande qui, habituellement, sont placés sur un côté latéral du bâti, dit côté entraînement, l'opérateur étant placé, avec son pupitre de commande, sur l'autre côté dit côté opérateur.At least one of the work rolls must be rotated about its axis by control means which are usually placed on a lateral side of the frame, said drive side, the operator being placed, with his console. command, on the other side said operator side.
Il est nécessaire, en cours de fonctionnement, d'écarter les unités de flexion à l'extérieur de la cage pour nettoyage, entretien ou remplacement des rouleaux.It is necessary, during operation, to move the bending units outside the cage for cleaning, maintenance or replacement of the rollers.
A cet effet, chaque unité de flexion forme, habituellement, une cassette démontable qui, d'une part, doit être déplacée verticalement pour le réglage de l'imbrication et, d'autre part, peut être retirée en bloc du bâti de la machine, vers le côté opérateur, par déplacement transversal, perpendiculairement à l'axe longitudinal de défilement de la bande.For this purpose, each bending unit usually forms a removable cassette which, on the one hand, has to be moved vertically for adjustment of the nesting and, on the other hand, can be withdrawn as a whole from the frame of the machine. towards the operator side, by transverse displacement, perpendicular to the longitudinal axis of travel of the strip.
Pour cela, habituellement, la cassette est munie à ses deux extrémités, respectivement avant et arrière, de galets roulant sur des rails de guidage qui s'étendent entre les deux montants du bâti, transversalement à l'axe de défilement de la bande.For this, usually, the cassette is provided at its two ends, respectively front and rear, of rollers rolling on guide rails which extend between the two uprights of the frame, transversely to the axis of travel of the strip.
Il faut, cependant, permettre, d'une part les déplacements verticaux de la cassette pour le réglage de l'imbrication et, d'autre part, son déplacement transversal en roulant sur les rails pour son retrait à l'extérieur du bâti.It is necessary, however, to allow, on the one hand the vertical displacements of the cassette for adjusting the nesting and, on the other hand, its transverse displacement by rolling on the rails for its withdrawal outside the frame.
Diverses dispositions ont été imaginées à cet effet.Various provisions have been devised for this purpose.
Par exemple, dans la disposition du document
D'autre part, pour faciliter le retrait, à l'extérieur du bâti, de la cassette, il est avantageux que celle-ci soit portée, à son extrémité avant tournée du côté opérateur, par un chariot de démontage muni d'un moyen amovible de prise en charge d'un organe d'appui externe de la cassette dont seule l'extrémité arrière repose sur les rails de guidage, par un organe d'appui interne.On the other hand, to facilitate the withdrawal, outside the frame, the cassette, it is advantageous that it is carried, at its front end turned on the operator side, by a dismounting carriage provided with a means removable support of an external support member of the cassette of which only the rear end rests on the guide rails, by an internal support member.
Une telle disposition est décrite, par exemple, dans le document
Par ailleurs, pour faciliter l'entretien ou le remplacement des rouleaux, en particulier de l'unité de flexion supérieure, il est avantageux que le châssis de support des rouleaux soit monté pivotant autour d'un axe, entre une position de planage pour laquelle les rouleaux sont tournés vers le bas et une position d'entretien pour laquelle les rouleaux sont tournés vers le haut, ce qui facilite les opérations d'entretien ou de remplacement.Furthermore, to facilitate maintenance or replacement of the rollers, in particular of the upper bending unit, it is advantageous that the support frame of the rollers is pivotally mounted about an axis, between a planing position for which the rollers are facing downwards and a maintenance position for which the rollers are facing up, which facilitates maintenance or replacement operations.
Le document
Un tel plateau est donc très lourd et encombrant et sa manoeuvre difficile. En outre, une telle disposition nécessite l'arrêt du défilement de la bande puisque toutes les unités de flexion sont ouvertes et retournées en même temps pour entretien.Such a plateau is very heavy and bulky and difficult maneuver. In addition, such an arrangement requires stopping the tape running since all the bending units are open and returned at the same time for maintenance.
Pour éviter ces inconvénients, dans la disposition du document
Il est ainsi possible de retirer séparément de la cage l'unité de flexion supérieure et de retourner le châssis de support des rouleaux pour faciliter leur entretien, les autres unités de flexion restant à l'intérieur du bâti.It is thus possible to separate the upper bending unit separately from the cage and to return the support frame of the rollers to facilitate their maintenance, the other bending units remaining inside the frame.
Cependant, comme indiqué plus haut, pour permettre le retrait et le retournement de la cassette, il faut, tout d'abord, que celle-ci soit déconnectée des vérins de réglage de l'imbrication, ce qui nécessite une opération assez complexe et, même, relativement dangereuse dans la mesure où il faut intervenir sur la cassette lorsque celle-ci est à l'intérieur du bâti.However, as indicated above, to allow removal and reversal of the cassette, it must first of all, it is disconnected from the adjustment cylinders of the nesting, which requires a fairly complex operation and, even, relatively dangerous in that it must intervene on the tape when it is inside the frame.
Pour éviter cet inconvénient, le document
La déconnection entre les vérins de réglage d'imbrication et le châssis de support des rouleaux peut alors se faire par simple coulissement transversal, dans la mesure où ce déplacement s'effectue au niveau supérieur, en roulant sur des rails fixes. Cependant, il faut alors que le châssis de démontage soit équipé d'un moyen amovible, déplaçable verticalement, de prise en charge de l'organe d'appui externe placé à l'extrémité avant du châssis de support des rouleaux.The disconnection between the nesting adjusting jacks and the support frame of the rollers can then be done by simple transverse sliding, inasmuch as this movement takes place at the upper level, rolling on fixed rails. However, it is then necessary that the disassembly frame is equipped with a removable means, movable vertically, supporting the external support member placed at the front end of the support frame of the rollers.
Dans d'autres dispositions connues, pour résoudre ce problème du réglage de l'imbrication et du déplacement transversal, les rails de guidage se déplacent verticalement sous l'action des vérins de réglage de l'imbrication. Le document
Ainsi, il n'est plus nécessaire de relier de façon amovible les vérins de réglage au châssis de support des rouleaux qui vient simplement se placer au dessous desdits vérins dans sa position de travail entre les deux montants du bâti.Thus, it is no longer necessary to removably connect the adjustment cylinders to the support frame of the rollers which is simply placed below said cylinders in its working position between the two amounts of the frame.
Dans la mesure où il faut permettre, d'une part un déplacement vertical de l'unité de flexion pour le réglage d'imbrication en position de travail, d'autre part un déplacement transversal entre cette position de travail et une position d'entretien, écartée latéralement, et enfin une possibilité de retournement de l'ensemble des rouleaux supérieurs, pour démontage et entretien, les dispositions connues permettant de résoudre l'ensemble de ces problèmes sont assez complexes ;Insofar as it is necessary to allow, on the one hand, a vertical displacement of the bending unit for the nesting adjustment in the working position, on the other hand a transverse displacement between this working position and a maintenance position. , laterally spaced, and finally a possibility of reversal of all the upper rollers for disassembly and maintenance, known provisions to solve all of these problems are quite complex;
C'est pourquoi, pour ne pas compliquer encore le dispositif, il était prévu, jusqu'à présent, de réaliser manuellement le retournement de la cassette, après retrait en position d'entretienTherefore, not to complicate the device yet, it was planned, until now, to manually turn the cassette, after withdrawal in the maintenance position
Dans la disposition, par exemple, du document
Le retournement de la cassette est commandé par un pignon calé sur le tourillon formant l'organe d'appui externe et commandé manuellement, par l'intermédiaire d'un engrenage à vis sans fin, au moyen d'un volant monté rotatif sur ledit châssis auxiliaire d'appui sur le chariot de démontage. Une telle disposition, assez encombrante, alourdit notablement l'extrémité avant de la cassette qui est ainsi déséquilibrée.The reversal of the cassette is controlled by a pinion wedged on the trunnion forming the external support member and controlled manually, by means of a worm gear, by means of a flywheel rotatably mounted on said frame auxiliary support on the disassembly trolley. Such an arrangement, quite bulky, significantly increases the front end of the cassette which is thus unbalanced.
En revanche, dans la disposition du document
Dans la disposition du document
Après entretien, il faut ramener le châssis de support dans sa position de travail au dessous de la poutre coulissante et le verrouiller sur celle-ci.After maintenance, it is necessary to return the support frame to its working position below the sliding beam and lock it on it.
Il apparaît donc que, dans toutes les dispositions connues, un opérateur doit intervenir manuellement sur la machine pour le retrait et le retournement des unités de flexion.It therefore appears that, in all the known arrangements, an operator must manually intervene on the machine for the withdrawal and overturning of the bending units.
Or, dans de telles installations, qui, actuellement, fonctionnent, de préférence, en ligne continue, on s'efforce de ne pas arrêter le défilement de la bande et tout l'espace à proximité de celle-ci reste donc dangereux.However, in such installations, which currently operate preferably in a continuous line, efforts are made not to stop scrolling the band and all the space in the vicinity thereof remains dangerous.
Cependant, depuis un certain temps, la réglementation devient de plus en plus sévère et, en particulier, une directive européenne impose maintenant d'utiliser les techniques les plus sûres afin d'éviter autant que possible les risques pour le personnel. Les constructeurs sont donc amenés, non seulement à imposer des consignes de sécurité, mais également à modifier leurs installations afin d'éviter de tels risques. Dans le cas, par exemple, d'une installation de planage, on peut envisager l'utilisation de capots de protection amovible venant se placer, du côté entretien, le long de la machine de planage, afin de permettre aux opérateurs de s'approcher de celle-ci en toute sécurité. On peut également prévoir des dispositifs commandant l'arrêt du défilement en cas de danger. Cependant, de tels dispositifs de protection gênent l'accès aux différents organes de la machine et on peut toujours craindre que, pour des manoeuvres qu'il ne juge pas dangereuses, un opérateur néglige de mettre en oeuvre les dispositifs et les procédures de sécurité prévus.However, for some time, regulations have become increasingly stringent and, in particular, a European directive now requires the use of the safest techniques in order to avoid as much as possible the risks for the personnel. Manufacturers are therefore led, not only to impose safety instructions, but also to modify their facilities to avoid such risks. In the case, for example, of a leveling installation, it is possible to envisage the use of removable protective covers which can be placed, on the maintenance side, along the leveling machine, in order to allow operators to approach of it safely. Devices can also be provided to stop the scrolling in case of danger. However, such protective devices impede access to the various parts of the machine and one can always fear that, for maneuvers that he does not consider dangerous, an operator neglects to implement the devices and safety procedures provided. .
L'invention a donc pour objet d'éviter de tels inconvénients grâce à des perfectionnement aux dispositifs de planage à cassette démontable, permettant d'automatiser entièrement les opérations de retrait et de retournement de l'ensemble des rouleaux, en particulier de l'unité de flexion supérieure, de façon que les opérations manuelles d'entretien ou de remplacement s'effectuent seulement après retournement, à l'écart du bâti de la machine.The object of the invention is therefore to avoid such drawbacks by means of improvements to the demountable cassette leveling devices, making it possible to fully automate the withdrawal and turning operations of all the rollers, in particular of the unit. greater bending, so that the manual maintenance or replacement operations are performed only after turning, away from the frame of the machine.
L'invention permet ainsi d'éviter autant que possible l'accès d'un opérateur à proximité de la machine, en particulier lorsque celle-ci reste en fonctionnement et que le défilement de la bande est poursuivi.The invention thus makes it possible to avoid, as far as possible, the access of an operator to the vicinity of the machine, in particular when the latter remains in operation and when the running of the tape is continued.
L'invention s'applique donc, d'une façon générale, à un dispositif de planage d'une bande métallique selon la revendication 1.The invention therefore applies, in general, to a planing device of a metal strip according to
Dans un mode de réalisation préférentiel, les deux organes d'appui, respectivement externe et interne définissent un axe de pivotement autour duquel peut tourner en bloc le châssis de support de l'ensemble de rouleaux et l'organe en particulier de type moteur, de commande du pivotement est porté par le chariot de démontage et vient s'engager de façon amovible, dans la position de démontage de l'unité de flexion, sur une pièce de commande du pivotement, centrée sur ledit axe de pivotement et calée en rotation sur le châssis de support.In a preferred embodiment, the two support members, respectively external and internal, define a pivot axis around which the support frame of the set of rollers and the member, in particular of the motor, control of the pivoting is carried by the dismounting carriage and comes to engage removably, in the disassembly position of the bending unit, on a control part of the pivot, centered on said pivot axis and set in rotation on the support frame.
Avantageusement, l'organe moteur actionne une pièce dentée en forme de crémaillère déplaçable longitudinalement et sur laquelle vient engrener, dans la position de démontage de l'unité de flexion, un pignon à denture conjuguée, centré sur l'axe de pivotement du châssis de support des rouleaux et calé en rotation sur celui-ci.Advantageously, the drive member actuates a toothed piece in the form of a rack that is displaceable longitudinally and on which, in the disassembly position of the bending unit, meshing with a toothed gear, centered on the pivot axis of the frame of support rolls and rotated on it.
Mais l'organe moteur peut aussi commander directement le pivotement du châssis de support des rouleaux par l'intermédiaire d'un moyen amovible d'accouplement.But the drive member can also directly control the pivoting of the support frame of the rollers by means of a removable coupling means.
Par exemple, l'organe moteur peut comporter un pignon denté ou une vis sans fin, entraîné en rotation autour de son axe par un moteur et sur lequel vient engrener, par déplacement parallèle à un plan d'engrènement, un pignon à denture conjuguée calé en rotation sur le châssis de support des rouleaux et centré sur l'axe de pivotement de celui-ci.For example, the drive member may comprise a pinion gear or a worm gear driven in rotation about its axis by a motor and on which meshing, by displacement parallel to a meshing plane, a toothed gear conjugate wedged in rotation on the support frame of the rollers and centered on the pivot axis thereof.
Selon une autre caractéristique préférentielle, le dispositif comporte un moyen amovible de prise en charge de l'unité de flexion, monté déplaçable sur le chariot de démontage, orthogonalement à l'axe de pivotement de l'ensemble des rouleaux, entre une position écartée permettant le déplacement vertical de l'unité de flexion à l'intérieur du bâti et une position d'engagement du moyen de prise en charge sur l'organe d'appui externe.According to another preferred feature, the device comprises a removable means for supporting the bending unit, mounted movably on the disassembly carriage, orthogonal to the axis of pivoting of the set of rollers, between a spaced position allowing the vertical displacement of the bending unit inside the frame and an engagement position of the support means on the external support member.
De façon particulièrement avantageuse, ce moyen amovible de prise en charge de l'unité de flexion est porté par un châssis auxiliaire monté déplaçable sur le chariot de démontage, orthogonalement à l'axe de pivotement de l'ensemble de rouleaux, entre une position écartée permettant le déplacement vertical de l'unité de flexion à l'intérieur du bâti et une position d'engagement du moyen de prise en charge sur l'organe d'appui externe du châssis de support des rouleaux.Particularly advantageously, this removable means for supporting the bending unit is carried by an auxiliary frame movably mounted on the disassembly carriage, orthogonal to the axis of pivoting of the set of rollers, between a remote position allowing the vertical displacement of the bending unit inside the frame and an engagement position of the support means on the external support member of the support frame of the rollers.
Dans ce cas, l'organe moteur est monté sur ce châssis auxiliaire et vient s'engager de façon amovible sur une pièce de commande solidaire en rotation du châssis de support des rouleaux, dans la position de démontage de la cassette.In this case, the drive member is mounted on the auxiliary frame and is engaged removably on a control part integral in rotation of the support frame of the rollers, in the disassembly position of the cassette.
Dans le cas où la machine de planage comporte au moins deux paires d'unités de flexion, respectivement supérieure et inférieure, centrées sur au moins deux plans successifs de planage, la machine comprend au moins un chariot de démontage sur lequel sont montés au moins deux châssis auxiliaires centrés chacun sur un plan de planage, et portant chacun un moyen de prise en charge de l'unité de flexion supérieure correspondante, ainsi que des moyens de commande du pivotement de l'ensemble des rouleaux de l'unité de flexion.In the case where the leveling machine comprises at least two pairs of bending units, respectively upper and lower, centered on at least two successive leveling planes, the machine comprises at least one dismounting carriage on which are mounted at least two auxiliary frames each centered on a leveling plane, and each carrying means for handling the corresponding upper bending unit, as well as means for controlling the pivoting of all the rollers of the bending unit.
Selon une autre caractéristique préférentielle, le moyen de prise en charge de l'extrémité avant d'une cassette et l'organe d'appui externe de celle-ci comportent deux pièces de formes conjuguées s'engageant l'une dans l'autre par déplacement orthogonal à l'axe du rouleau de travail, pour le centrage des moyens de commande du pivotement dans un plan d'engrènement avec le pignon conjugué calé sur le châssis de support des rouleaux.According to another preferred feature, the means for handling the front end of a cassette and the external support member thereof comprise two pieces of conjugate shapes engaging one into the other by displacement orthogonal to the axis of the working roller, for centering the pivot control means in a meshing plane with the conjugated pinion wedged on the support frame of the rollers.
Mais l'invention peut aussi s'appliquer à un autre type de dispositif de planage dans lequel le châssis de support de l'ensemble de rouleaux est porté par une poutre montée coulissante transversalement sur des rails déplaçables verticalement entre une position relevée et une position abaissée de planage, et sur laquelle prend appui le chariot de démontage pour le déplacement transversal de l'unité de flexion. Selon l'inventeur, cette poutre coulissante peut porter, alors un organe moteur autonome de commande du pivotement du châssis entre la position de travail des rouleaux et une position retournée.But the invention can also be applied to another type of leveling device in which the support frame of the set of rollers is carried by a beam slidably mounted transversely on rails movable vertically between a raised position and a lowered position. planing, and on which bears the disassembly carriage for the transverse displacement of the flexion unit. According to the inventor, this sliding beam can carry, then a autonomous motor unit for controlling the pivoting of the chassis between the working position of the rollers and an inverted position.
En particulier, l'organe moteur autonome peut être un vérin commandé à distance, prenant appui dans un sens sur la poutre coulissante et dans l'autre sens sur une pièce solidaire en rotation du châssis de support de l'ensemble de rouleaux.In particular, the autonomous motor unit may be a remotely actuated cylinder, bearing in one direction on the sliding beam and in the other direction on a rotationally integral part of the support frame of the set of rollers.
Mais l'organe moteur autonome de commande du pivotement peut aussi être monté sur le chariot de démontage et être relié par un moyen d'accouplement amovible avec une pièce de commande du pivotement du châssis, lorsque la poutre coulissante est prise en charge par le chariot de démontage.But the self-operating pivotal control unit can also be mounted on the disassembly carriage and be connected by a removable coupling means to a chassis pivot control member, when the sliding beam is supported by the carriage. dismantling.
Par ailleurs, selon une autre caractéristique préférentielle, le châssis de support des rouleaux de l'unité de flexion supérieure est monté rotatif autour d'un axe perpendiculaire à l'axe de défilement, sur deux tourillons opposés, respectivement un tourillon externe tournant dans un palier prenant appui de façon amovible sur le chariot de démontage et un tourillon interne tournant dans un palier prenant appui sur un chemin de guidage, le centre de gravité de l'ensemble de l'unité de flexion est placé sensiblement sur l'axe des deux tourillons de pivotement. Dans ces cas, le tourillon externe peut porter un pignon denté solidaire en rotation du châssis de support des rouleaux et sur lequel s'engage l'organe moteur de commande du pivotement dudit châssis dans la position de démontage de l'unité de flexion.Furthermore, according to another preferred feature, the support frame of the rollers of the upper bending unit is rotatably mounted about an axis perpendicular to the axis of travel, on two opposite journals, respectively an external journal rotating in a bearing bearing releasably on the disassembly carriage and an inner journal rotating in a bearing bearing on a guide path, the center of gravity of the entire flexion unit is placed substantially on the axis of the two pivot pins. In these cases, the outer trunnion may carry a toothed pinion integral in rotation with the support frame of the rollers and on which the drive member for controlling the pivoting of said frame into the disassembly position of the bending unit engages.
D'autres caractéristiques avantageuses de l'invention apparaîtront dans la description suivante d'un mode de réalisation particulier, donné à titre d'exemple et représenté sur les dessins annexés.Other advantageous features of the invention will appear in the following description of a particular embodiment, given by way of example and shown in the accompanying drawings.
La
La
La machine de planage représentée, en vue de côté, sur la
Dans l'exemple représenté, la machine est équipée de deux ensembles de planage identiques E, E' comportant chacun deux unités de flexion placées de part et d'autre d'un plan P de défilement de la bande à planer, respectivement une unité de flexion supérieure 20, 20', placée au-dessus du plan de défilement P et une unité de flexion inférieure, placée au-dessous dudit plan et non représentée sur les dessins.In the example shown, the machine is equipped with two identical leveling assemblies E, E 'each having two bending units placed on each side. and on the other hand, a planar plane P of the band to be hovered, respectively an
Chaque unité de flexion centrée sur un plan médian vertical Q, Q', peut être retirée de la cage, par déplacement transversal, en passant par une ouverture 11, 11' ménagée, au moins dans le montant 10 du bâti 1 placé du côté de démontage c'est-à-dire, normalement, du côté opérateur de la machine, à droite sur la
Pour cela, selon une disposition analogue à celle du document
Le châssis 21 de support des rouleaux s'étend transversalement à l'axe de défilement entre une extrémité avant, du côté opérateur, munie d'un organe d'appui externe 5 reposant sur le chariot de démontage 3 et une extrémité arrière, du côté opposé, munie d'un organe d'appui interne 6 reposant, par l'intermédiaire de galets de roulement 61, sur des rails de guidage 12, s'étendant transversalement entre les deux montants de la cage et prolongés légèrement à l'extérieur de celle-ci par une partie 12a permettant le retrait complet de la cassette 20.The
Le chariot de démontage 3 est monté coulissant perpendiculairement à l'axe de défilement, sur des rails R fixés sur le massif de fondation et, par conséquent, perpendiculaires au plan de la
Selon une disposition analogue à celle du document
Ainsi, dans le cas représenté sur la
Dans l'exemple représenté, le chevalet 31 comporte une traverse horizontale et une plaque de support transversale 32 reliée par des montants 33 à la traverse 31 et sur laquelle sont fixées deux paires de glissières verticales 34 centrées sur les plans médians Q, Q' des deux unités de flexion 20, 20'.In the example shown, the
Chaque châssis auxiliaire 4, 4' comporte une partie de guidage 41 montée coulissante verticalement sur une paire de glissières 34, et portant, à sa partie supérieure, une semelle horizontale 42 sur laquelle est monté un moyen de prise en charge 40 de l'unité de flexion 20.Each
La
Ce moyen de prise en charge 40 est simplement constitué d'une pièce en forme de V ouvert vers le haut et fixée sur la semelle horizontale 42 du châssis auxiliaire.This pick-up means 40 is simply constituted by an upwardly open V-shaped piece fixed to the
Un vérin 34 dont le corps prend appui, par une articulation, sur la plaque de support 32 et dont la tige est articulée sur une chape fixée sur le châssis auxiliaire 4, peut commander le coulissement de ce dernier vers le haut, de façon à engager la pièce en V 40 sur une pièce 53 ayant un profil en V conjugué et munie, à sa partie inférieure, d'un trou dans lequel vient s'engager un téton 43 associé à la pièce en V 40 et centré sur le plan médian Q (Q') de l'unité de flexion.A
Cette pièce de centrage 53 fait partie de l'organe d'appui externe 5 qui, dans l'exemple représenté, comporte un bout d'arbre 50 ménagé en saillie sur l'extrémité avant de la cassette 20.This centering
Comme indiqué plus haut, dans sa position de travail à l'intérieur du bâti 1, l'unité de flexion 20 doit pouvoir se déplacer verticalement pour le réglage de l'imbrication et la cage 1 est munie, à cet effet, de vérins 14 comportant chacun un corps fixé sur la cage, par exemple sur une pièce 10a en forme de console fixée à la partie supérieure du montant 10 de la cage, et une tige 14a qui est reliée à l'unité de flexion 20 pour permettre le déplacement vertical de celle-ci dans les deux sens, respectivement vers le bas pour le réglage de l'imbrication au niveau souhaité et vers le haut pour ramener la cassette à son niveau de démontage.As indicated above, in its working position inside the
Pour permettre son déplacement transversal, la cassette 20 doit donc être reliée de façon amovible aux tiges des vérins 14.To allow its transverse displacement, the
Comme indiqué plus haut, dans la disposition du document
Cependant, ce montage pivotant des galets de roulement arrière peut être évité si les rails de guidage peuvent se déplacer verticalement sous l'action des vérins de réglage de l'imbrication et, à titre d'exemple, la
Dans ce cas, en effet, les deux rails de guidage sur lesquels roulent les galets 61 constituant l'organe d'appui interne 6, à l'extrémité arrière de la cassette 20, sont constitués par les côtés latéraux d'une plaque 12 sur laquelle prennent appui, directement, les vérins 14 de réglage de l'imbrication. Par exemple, la tige 14a de chaque vérin 14 peut être vissée sur une pièce de liaison 15 passant dans un orifice de la plaque 12 et serrée sur celle-ci par un contre-écrou, la plaque 12 pouvant ainsi se déplacer verticalement, vers le haut et vers le bas, sous l'action des deux vérins 14.In this case, in fact, the two guide rails on which the
Dans ce cas, la cassette 20 repose sur la plaque de guidage 12, non seulement à son extrémité arrière, par les galets 61 de l'organe d'appui interne 6 mais également, à son extrémité avant, par des galets 51 montés rotatifs à l'extrémité de bras 51 fixés sur le châssis 21 de la cassette, ce dernier étant muni, à ses deux extrémités, de plaques de guidage lubrifiées 23a, 23b qui peuvent coulisser le long de glissières verticales 11 a ménagées sur chaque montant 10 de la cage, de chaque côté de l'ouverture 11 de passage de la cassette.In this case, the
De façon connue, par ailleurs, pour faciliter l'entretien de l'unité de flexion supérieure, selon une disposition analogue à celle qui fait l'objet du document
A cet effet, comme le montre la
De même, à son extrémité arrière, le châssis 21 de support des rouleaux est monté pivotant autour de l'axe x'x sur un tourillon 60 centré sur le même axe horizontal x'x que le tourillon externe 50 et tournant dans un palier 63 porté par l'organe d'appui interne 6.Similarly, at its rear end, the
Ainsi, il est possible, après retrait de la cassette 20 à l'extérieur de la cage 1, de la faire pivoter autour de l'axe x'x afin de retourner l'ensemble des rouleaux 22 vers le haut, ce qui facilite leur entretien ou leur remplacement.Thus, it is possible, after removal of the
Après cette opération, la cassette 20 est ramenée à l'intérieur de la cage 1 par le chariot 3 en roulant sur les deux bords de la plaque 12.After this operation, the
La cassette est alors suspendue à cette plaque par les deux paires de galets, respectivement arrière 61 et avant 51, les plaques de guidage 23a, 23b étant centrées sur les glissières des deux montants 10 de la cage 1.The cassette is then suspended from this plate by the two pairs of rollers, respectively rear 61 and before 51, the
Par ailleurs, la face supérieure 20a de la cassette est munie de deux plots 24 qui viennent se centrer sur les axes des deux vérins 14 de déplacement vertical, l'épaisseur de ces plots 24 étant déterminée de façon à laisser, entre le plot 24 et l'extrémité inférieure de la pièce de liaison 15, un simple jeu nécessaire au coulissement transversal de la cassette sur les bords latéraux de la plaque de guidage 12.Moreover, the upper face 20a of the cassette is provided with two
La cassette 20 étant ainsi suspendue à la plaque 12, l'organe d'appui externe 5 peut être libéré par abaissement du châssis auxiliaire 4 du chariot de démontage 3.The
Les vérins à double effet 14 peuvent alors commander les déplacements verticaux de la cassette 20, vers le bas pour le réglage de l'imbrication, en prenant appui sur les plots 24 et vers le haut pour le rappel en position haute au moyen de la plaque 12 sur laquelle prennent appui les galets 51, 61.The double-acting
Pour le démontage de l'une ou l'autre des deux cassettes 20, 20', le châssis correspondant 4, 4' est relevé de façon que la pièce de prise en charge 40 s'engage sur la pièce conjuguée 41 de l'organe d'appui externe 5, en soulevant légèrement la cassette qui peut alors être retirée de la cage 1 au moyen du chariot de démontage 3, en roulant sur les galets 61 placés à son extrémité arrière.For disassembly of one or the other of the two
Selon l'invention, chaque châssis auxiliaire 4, 4' porte des moyens 7 montés sur la semelle supérieure 42, pour la commande du pivotement de la cassette autour de l'axe x'x défini par les deux paliers, respectivement avant 53 et arrière 63.According to the invention, each
Dans le mode de réalisation représenté sur les
Lorsque ce châssis auxiliaire 4 est relevé pour la prise en charge de l'organe d'appui externe 5, cette crémaillère 71 vient engrener sur un pignon denté 54 centré sur l'axe x'x et calé en rotation au bout du tourillon 50.When this
Ainsi, par coulissement de la crémaillère 71, le vérin 72 peut commander le pivotement de 180° du châssis 21 de support des rouleaux 22 qui se trouvent alors tournés vers le haut, dans la position représentée, sur la
Avantageusement, l'axe de rotation x'x sur lequel sont centrés les deux patins 55, 63, passe par le centre de gravité de l'ensemble du châssis 21 de support des rouleaux, qui est ainsi équilibré de telle sorte que le pivotement ne demande qu'un couple relativement faible.Advantageously, the x'x axis of rotation on which are centered the two
Selon une autre caractéristique essentielle de l'invention, les vérins 72 de commande du pivotement de la cassette, de même que les vérins 34 de manoeuvre des châssis auxiliaires 4, 4' ainsi que le vérin 13 de manoeuvre du chariot de démontage 3 peuvent être commandés à distance. Ainsi, toutes les opérations de démontage d'une cassette et de retournement de celle-ci peuvent être réalisées en toute sécurité, par un organe moteur autonome, commandé à distance, sans aucune intervention de personnel à proximité de la machine. De plus, la durée de l'intervention peut être limitée au temps simplement nécessaire pour une vérification de l'état des rouleaux 22, leur nettoyage ou leur remplacement, ou bien pour la fixation d'élingues permettant le transfert de l'unité de flexion vers un atelier au moyen d'un engin de levage.According to another essential characteristic of the invention, the
Bien entendu, l'invention ne se limite pas aux détails du mode de réalisation qui vient d'être décrit à titre de simple exemple mais englobe également les variantes utilisant des moyens équivalents.Of course, the invention is not limited to the details of the embodiment which has just been described as a simple example but also encompasses variants using equivalent means.
Ainsi, la crémaillère 71 commandée par le vérin 72 pourrait être remplacée par une vis formant une crémaillère hélicoïdale venant s'engager, par déplacement vertical du châssis 4, sur un pignon à denture hélicoïdale conjuguée calé sur le tourillon 50, cette vis étant entraînée en rotation autour de son axe par un moteur porté par la semelle 42.Thus, the
Mais le pivotement du châssis 21 de support des rouleaux peut aussi être commandé directement par un organe moteur associé à un moyen amovible d'accouplement.But the pivoting of the
Par exemple, on pourrait placer sur le châssis auxiliaire 4 un moteur tournant autour d'un axe parallèle à l'axe x'x de pivotement de la cassette et monté coulissant axialement sur la semelle 42 du châssis 4, ce moteur pouvant entraîner un pignon qui vient s'engager sur le pignon 54 à denture conjuguée par déplacement axial, parallèlement au plan d'engrènement. Le moteur pourrait aussi être centré directement sur l'axe de pivotement x'x et relié au tourillon 50 par un système à rainures et cannelures ou par tout autre système d'accouplement amovible.For example, it could be placed on the auxiliary frame 4 a motor rotating about an axis parallel to the x'x pivot axis of the cassette and axially slidably mounted on the sole 42 of the
Par ailleurs, dans le mode de réalisation préférentiel décrit ci-dessus à titre d'exemple, les rails de guidage transversal permettant le retrait de la cassette se déplacent verticalement avec celle-ci sous l'action des vérins de réglage de l'imbrication.Furthermore, in the preferred embodiment described above by way of example, the transverse guide rails for removal of the cassette move vertically therewith under the action of the adjustment cylinders of the nesting.
Mais l'invention peut aussi s'appliquer aux autres dispositions connues, décrites, par exemple, dans les documents
Dans le cas, en effet, du document
De même, dans la disposition du document
Par ailleurs, il est avantageux de retourner l'ensemble de la cassette en la faisant tourner sur deux tourillons alignés, respectivement avant 50 et arrière 60 définissant un axe de pivotement x'x passant, sensiblement, par le centre de gravité de l'ensemble du châssis 21 de support des rouleaux mais l'axe de pivotement pourrait aussi être décalé.Furthermore, it is advantageous to turn the entire cassette by rotating it on two aligned trunnions, respectively before 50 and rear 60 defining a pivot axis x 'passing substantially through the center of gravity of the assembly. of the
Par exemple, l'invention peut aussi s'appliquer à une disposition du type décrit dans le document
Cependant, pour éviter de placer des circuits de commande hydrauliques sur cette poutre coulissante qui vient se placer, en position de travail, à l'intérieur du bâti, l'organe moteur de commande du pivotement pourrait ainsi être monté sur le chariot de démontage et actionner un moyen d'accouplement amovible venant engrener, dans la position de démontage, avec une pièce de commande centrée sur l'axe de pivotement du châssis et calée en rotation sur celui-ci.However, to avoid placing hydraulic control circuits on this sliding beam which is placed in the working position, inside the frame, the pivot control motor member could thus be mounted on the dismounting carriage and actuating a detachable coupling means meshing, in the disassembly position, with a control part centered on the pivot axis of the frame and set in rotation thereon.
Claims (16)
- Flattening device for a metal strip travelling along a longitudinal axis, comprising, inside a support framework (1) having two uprights (10) apart on either side from the strip travel axis, at least a flattening set comprising two bending units disposed respectively above and below a plane (P) of travel of the strip, respectively an upper bending unit (20) and a lower bending unit, at least the upper bending unit forming a removable cassette (20) comprising a set of rolls (22), respectively a work roll (22a) and support rolls (22b), assembled rotating around axes perpendicular to the travel axis, on a support frame (21) extending transversally between the two uprights (10) of the framework (1), said framework carrying means comprising two control cylinders (14) of the vertical moving of the bending unit (20) between an up position above the strip travel plane (P) and a down position of so-called interlock for the flattening, and removal means (3), at least of the upper bending unit (20), by transversal moving between its work position inside the framework (1) and an apart maintenance position outside the framework (1) on a maintenance side, comprising a removal truck (3) displaceable transversally to the travel axis and on which can rest the bending unit (20), through an external rest unit (5) placed towards the maintenance side, said bending unit (20) being carried, on the side opposite its back end, by an internal rest unit (6) resting on a guiding lane (12) comprising two guiding rails extending transversally between the two uprights (10) of the framework (1), the support frame (21) of the rolls set (22) being able to revolve around an axis (x'x) parallel to the rolls axes, in the maintenance position, between the work position for which the rolls are turned downwards and a turned around position for which the rolls are turned upwards, the swivelling of the support frame (21) of the rolls set (22) being controlled by an autonomous unit (7) displaceable transversally with the removal truck (3) and cooperating with a mating means (54) interdependent in rotation with the rolls support frame (21) and centred around the swivelling axis (x'x) of said support frame, said autonomous unit (7) being able to be remotely controlled after setting the bending unit (20) in its maintenance position characterized by the fact that- the two guiding rails on which are rolling guide rollers (61) forming the internal rest unit (6), at the back end of the cassette (20), are made up of lateral sides of a plate (12) on which are resting, directly, cylinders (14) adjusting the interlock,- the plate (12) being thus able to move vertically, upwards and downwards, under the action of the two cylinders (14),- an upper face (20a) of the cassette is supplied with two support studs (24) that are coming to centre themselves around the axes of the two vertical moving cylinders (14),- the support studs (24) thickness being determined in order to leave a simple clearance required for the transversal sliding motion of the cassette on the lateral edges of the plate (12),- so the cylinders (14) present a double effect by controlling the vertical movings of the cassette (20), downwards for the adjustment of the interlock, by resting on support studs (24) and upwards for the return in up position by means of the plate (12) on which are resting the guide rollers.
- Flattening device according to claim 1, characterized by the fact that two rest units, respectively external (5) and internal (6) define a swivelling axis (x'x) around which can turn as a whole the support frame (21) of the rolls set (22) and that the unit, in particular the driving type one (7), of swivelling control is carried by the removal truck (3) and is coming to fit in a removable way, in the removal position of the bending unit (20), on a piece (54) of swivelling control, centred around said swivelling axis (x'x) and locked in rotation on the support frame (21).
- Flattening device according to claim 2, characterized by the fact that the driving unit (7) operates a toothed piece (71) in the shape of a rack longitudinally displaceable and on which is coming to mesh, in the removal position of the bending unit (20), a mating toothed pinion (54), centred around the swivelling axis (x'x) of the rolls support frame (21) and locked in rotation on said frame.
- Flattening device according to claim 2, characterized by the fact that the driving unit (7) directly controls the swivelling of the rolls support frame (21) through a removable coupling means.
- Flattening device according to claim 4, characterized by the fact that the driving unit (7) comprises a toothed pinion driven in rotation around its axis by a motor and on which is coming to mesh, by moving parallel to a gear mesh plane, a mating toothed pinion locked in rotation on the rolls support frame (21) and centred around the swivelling axis (x'x) of said frame.
- Flattening device according to claim 4, characterized by the fact that the driving unit (7) comprises a worm driven in rotation around its axis by a motor and on which is coming to mesh, by moving parallel to a gear mesh plane, a mating toothed pinion locked in rotation on the rolls support frame and centred around the swivelling axis (x'x) of said frame.
- Flattening device according to anyone of claims 2 to 6, characterized in that it comprises a removable means (40) in charge of managing the bending unit (20), assembled displaceable on the removal truck (3), orthogonally to the swivelling axis (x'x) of the rolls set, between an apart position allowing the vertical moving of the bending unit (20) inside the framework and an interlock position of the management means (40) on the external rest unit (5).
- Flattening device according to claim 7, characterized by the fact that the removable means (40) in charge of managing the bending unit (20) is carried by an auxiliary frame (4) assembled displaceable on the removal truck (3), orthogonally to the swivelling axis (x'x) of the rolls set, between an apart position allowing the vertical moving of the bending unit (20) inside the framework and an interlock position of the management means (40) on the external rest unit (5) of the support frame (21) of the rolls (22).
- Flattening device according to claim 8, characterized by the fact that the driving unit (7) is assembled on the auxiliary frame (4) and is coming to mesh in a removable way on a control piece (54) interdependent in rotation with the rolls support frame (21), in the removal position of the cassette (20).
- Flattening device according to claim 9, characterized by the fact that the driving unit (7) comprises a cylinder (72) operating a rack (71) assembled sliding, on the auxiliary frame (4), perpendicularly to the swivelling axis (x'x) and on which is coming to mesh, by moving of the auxiliary frame (4), a mating toothed pinion (54) centred around the swivelling axis (x'x) and locked in rotation on the rolls support frame (21).
- Flattening device according to anyone of claims 8 to 10, comprising at least two pairs of bending units (20, 20'), respectively upper and lower, centred around at least two successive flattening planes (Q, Q') apart from each other in the strip travel direction, characterized by the fact that it comprises at least a removal truck (3) on which are assembled at least two auxiliary frames (4, 4') each centred around a flattening plane (Q, Q'), and each carrying a means (40) in charge of managing the corresponding upper bending unit (20), as well as control means (7) of the rolls set swivelling.
- Flattening device according to anyone of claims 7 to 11, characterized by the fact that the managing means (40) and the external rest unit (5) of the cassette (20) comprise two pieces of mating shapes (40, 53) fitting into each other by moving orthogonal to the work roll axis, for the centring of the swivelling control means around a gear mesh plane, one of said mating pieces (40, 53) carrying an axial interlocking means with the truck (3) for the moving of the cassette.
- Flattening device according to claim 1, wherein the support frame (21) of the rolls set (22) is carried by a girder assembled sliding transversally on vertically displaceable rails between an up position and a down position of flattening, and on which is resting the removal truck for the transversal moving of the bending unit (20), characterized by the fact that the autonomous driving unit (7) of swivelling control is carried by the sliding girder.
- Flattening device according to claim 13, characterized in that the autonomous driving unit (7) is a remotely controlled cylinder, resting in one direction on the sliding girder and in the other direction on a piece interdependent in rotation with the support frame (21) of the rolls set (22).
- Flattening device according to claim 1, wherein the support frame (21) of the rolls set (22) is carried by a girder assembled sliding transversally on vertically displaceable rails between an up position and a down position of flattening, and on which is resting the removal truck for the transversal moving of the bending unit (20), characterized by the fact that the autonomous unit (7), in particular the driving type one, of swivelling control is carried by the removal truck and is linked by a removable coupling means with a control piece centred around the swivelling axis of the rolls support frame and locked in rotation with said frame.
- Flattening device according to anyone of previous claims, characterized by the fact that the support frame (21) of the rolls of the upper bending unit (20) is assembled rotating around an axis (x'x) perpendicular to the travel axis, on two opposite trunnions (50, 60), respectively an external trunnion (50) spinning in a bearing (55) resting in a removable way on the removal truck (3) and an internal trunnion (60) spinning in a bearing (63) resting on a guiding lane (12), that the centre of gravity of the set of the bending unit (20) is placed approximately on the axis (x'x) of the two swivelling trunnions (50, 60) and that the external trunnion (50) carries a toothed pinion (54) interdependent in rotation with the rolls support frame (21) and on which meshes the unit (7), in particular the driving type one, of swivelling control of said frame (21) in the removal position of the bending unit (20).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0654712A FR2908060B1 (en) | 2006-11-03 | 2006-11-03 | MACHINE FOR PLANTING A METAL STRIP |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1918036A1 EP1918036A1 (en) | 2008-05-07 |
EP1918036B1 true EP1918036B1 (en) | 2010-08-18 |
Family
ID=37946280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20070301523 Active EP1918036B1 (en) | 2006-11-03 | 2007-11-05 | Device for straightening a metal strip |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1918036B1 (en) |
DE (1) | DE602007008515D1 (en) |
ES (1) | ES2350908T3 (en) |
FR (1) | FR2908060B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2408576B2 (en) † | 2009-03-20 | 2017-03-15 | Primetals Technologies France SAS | Device for turning over a flattening element, and flattening element engaging with said device |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109304594A (en) * | 2018-10-23 | 2019-02-05 | 江阴德尔热能机械有限公司 | A kind of large-scale stirring shaft coupling handler |
CN113118271B (en) * | 2021-04-12 | 2024-05-28 | 江苏孜俊自动化科技有限公司 | Electric control type sleeve-free edge sealing device for machining composite plate |
CN113401397B (en) * | 2021-06-24 | 2023-01-10 | 德州科技职业学院 | Wire harness arranging equipment based on mechano-electronics |
CN115770802A (en) * | 2021-09-07 | 2023-03-10 | 中集安瑞醇科技股份有限公司 | Conical cylinder welding seam leveling machine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2617744B1 (en) * | 1987-07-08 | 1994-05-20 | Clecim | METHOD AND INSTALLATION FOR FLOORING A METAL STRIP |
FR2659254B1 (en) * | 1990-03-09 | 1992-07-10 | Clecim Sa | SHEET FLOORING INSTALLATION. |
JPH0483413U (en) * | 1990-11-30 | 1992-07-21 | ||
JPH1034236A (en) * | 1996-07-29 | 1998-02-10 | Mitsubishi Heavy Ind Ltd | Tension leveler |
DE10028306A1 (en) * | 2000-06-07 | 2001-12-13 | Sms Demag Ag | Straightening machine for straightening metal strips |
-
2006
- 2006-11-03 FR FR0654712A patent/FR2908060B1/en not_active Expired - Fee Related
-
2007
- 2007-11-05 ES ES07301523T patent/ES2350908T3/en active Active
- 2007-11-05 EP EP20070301523 patent/EP1918036B1/en active Active
- 2007-11-05 DE DE200760008515 patent/DE602007008515D1/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2408576B2 (en) † | 2009-03-20 | 2017-03-15 | Primetals Technologies France SAS | Device for turning over a flattening element, and flattening element engaging with said device |
Also Published As
Publication number | Publication date |
---|---|
FR2908060B1 (en) | 2009-07-31 |
ES2350908T3 (en) | 2011-01-28 |
FR2908060A1 (en) | 2008-05-09 |
DE602007008515D1 (en) | 2010-09-30 |
EP1918036A1 (en) | 2008-05-07 |
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