EP3164231A1 - Rolling mill such as, for example, a cold rolling mill - Google Patents

Rolling mill such as, for example, a cold rolling mill

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Publication number
EP3164231A1
EP3164231A1 EP15745527.0A EP15745527A EP3164231A1 EP 3164231 A1 EP3164231 A1 EP 3164231A1 EP 15745527 A EP15745527 A EP 15745527A EP 3164231 A1 EP3164231 A1 EP 3164231A1
Authority
EP
European Patent Office
Prior art keywords
ramp
rolling mill
cylinders
rotation
strip
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
EP15745527.0A
Other languages
German (de)
French (fr)
Other versions
EP3164231B1 (en
Inventor
Conrad ERNST DE LA GRAETE
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.)
Fives DMS SA
Original Assignee
Fives DMS SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fives DMS SA filed Critical Fives DMS SA
Publication of EP3164231A1 publication Critical patent/EP3164231A1/en
Application granted granted Critical
Publication of EP3164231B1 publication Critical patent/EP3164231B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • 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
    • B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0239—Lubricating
    • B21B45/0245—Lubricating devices
    • B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
    • B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • ROLLING MILL SUCH AS FOR EXAMPLE COLD ROLLING MILL
  • the invention relates to a rolling mill, such as for example a cold rolling mill, and more particularly a rolling mill known to those skilled in the art under the name "High".
  • Such a rolling mill comprises a cage inside which rolling rolls are arranged.
  • the rolling rolls comprise two working rolls defining the gap of the strip to be rolled, and a set of first intermediate rolls and a set of intermediate second rolls for supporting each work roll (lower and upper).
  • These rolling rolls are supported by several sets of rollers bearing on the second intermediate rolls, on either side of the plane of the strip to be rolled.
  • the first intermediate rolls are two in number, and the said second intermediate rolls are three in number (for each working roll, upper or lower). Eight sets of rollers are supported on the second intermediate cylinders, on either side of the plane of the strip to be rolled.
  • ramps extend over the width of the strip to be rolled, in the roll stand, at an inter-space between the upper intermediate rolls, on the one hand, and the lower intermediate rolls, on the other hand. These ramps are classically positioned near the work rolls.
  • Such rolling mills typically comprise two pairs of ramps, the two ramps of each pair being disposed respectively below and above the plane of the strip to be rolled.
  • the two pairs of ramps are conventionally arranged on either side of the rolling plane passing through the axes of the working rolls.
  • Each of the ramps can be pivotally articulated to the cage, to allow the adjustment of the position of the ramp relative to the band, or relative to the cylinders nearby. This adjustment is effected by rotation of the ramp around its pivot axis, substantially parallel to the plane of the strip and perpendicular to the running direction of the strip.
  • each ramp has a rotation shaft, mounted free of rotation, at its ends, in bearings integral with the cage.
  • a hydraulic cylinder, connecting the cage and the shaft makes it possible to rotate the boom and then firmly hold the boom in the desired position.
  • the different possible positions of the ramps can, in particular, facilitate the removal of the cylinders, by removing the ramp or the cylinder to change.
  • the different positions can also facilitate the insertion of the strip between the working rolls.
  • the ramps of the upstream pair, according to the insertion direction of the strip can be brought closer to one another in order to physically guide the end of the strip to be introduced at the level of the air gap of the working rolls, the ramps of the other pair can be spaced to facilitate the recovery of the band, downstream of the work rolls.
  • the object of the present invention is to overcome the aforementioned drawbacks, by proposing a rolling mill equipped with at least one ramp, and limiting breakages, in particular in the event of breakage of the strip.
  • Another object of the present invention is to provide such a mill that eliminates or simplifies maintenance, especially after a breakage band.
  • the invention firstly relates to a rolling mill comprising a cage, at least one pair of working rolls, capable of defining the air gap of the strip to be rolled, as well as at least one ramp for spraying a fluid.
  • lubricant and / or refrigerant disposed near the plane of the strip to be rolled.
  • said ramp is secured to said cage by means of a mechanical connection, said articulated mechanical connection comprising elastic means constraining said ramp to at least one position of use, in the direction of the plane of the band, and authorizing, in the case of a force on said ramp tending to move the ramp, greater than a threshold value, the deformation of the elastic means against their restoring force, and thus the retraction of the ramp towards a position spaced from said at least one position of use.
  • said ramp is articulated to said cage, following a pivot connection of the mechanical connection, preferably of axis of rotation parallel to the plane of the strip to be rolled and perpendicular to the running direction of the strip, the elastic means being disposed between the ramp and the cage, exerting their return force to cause the rotation of the ramp around the axis of rotation of the pivot connection, in the direction of the strip, the retraction of the ramp of said at least a position of use towards said spaced position being obtained by an opposite rotation, about the axis of rotation of the pivot connection.
  • the resilient means work in compression to return said ramp from the position spaced towards said at least one position of use.
  • the resilient means work in extension to return said ramp from the spread position to the position of use.
  • said mechanical connection comprises, in addition to said elastic means, and the pivot connection, a hydraulic jack arranged in series with said elastic means between the cage and the ramp and, making it possible to adjust the position or positions of use of the ramp by rotation of the ramp around the axis of the pivot connection.
  • the rod and the body of the hydraulic cylinder are articulated respectively, on the one hand, to an ear, rigidly secured to the ramp and, on the other hand, to a bar whose one end is articulated along a first pivot axis to a support rigidly secured to the cage, the other end of the bar being articulated to the body of the hydraulic cylinder, along a second pivot axis, said elastic means constraining said bar to a position in abutment against the support in said at least one position of use, and wherein, in the case of a force greater than said threshold value, said bar deviates from this position by a rotation about the first pivot axis causing the deformation of the elastic means against the return force and so as to allow the pivoting of the ramp around the axis of rotation of said pivot connection.
  • the elastic means comprise one or more metal springs, such as a helical spring in extension or compression, or a spring resulting from a stack of Belleville washers.
  • the elastic means may further comprise a pneumatic spring, according to another alternative.
  • the rolling mill comprises, for the support of each work roll, lower or upper: a set of intermediate first cylinders, each bearing on said working cylinder,
  • the rolling mill comprises at least one pair of ramps, the two ramps of each pair being disposed respectively below and above the plane of the strip to be rolled, each of the ramps being secured to said cage by the intermediate of a said mechanical link, articulated, independent, comprising the elastic means.
  • the rolling mill comprises two pairs of ramps, the two pairs of ramps being disposed on either side of the rolling plane passing through the axes of the two working rolls.
  • the ramps of said at least one pair form, in at least one of their position (s) of use, two guide elements, upper and lower, facilitating insertion of the strip. between said working rolls.
  • said ramps are arranged in an interspace defined between the working rolls, lower and upper, the first intermediate cylinders, lower and upper, said second intermediate rolls, lower and upper, and the lower rollers, and higher, said mechanical links, possibly their hydraulic and flexible cylinders associated with the cylinders, being disposed in this inter-space, or laterally to the latter, and in such a way as to create a lateral clearance allowing the withdrawal of all the cylinders by sliding along their axis, as well as the removal of the rollers of the different assemblies, by sliding along their axis of rotation, without disassembly of said mechanical connections, if necessary, without disassembly of the cylinders and hoses associated with the cylinders.
  • - Figure 1 is a side view of a rolling mill type "20 High” equipped with ramps, according to a state of the art.
  • - Figure 2 is a side view of a type mill "High” equipped with ramps, according to the invention according to one embodiment.
  • FIG. 3 is a detailed view of the ramps of Figure 2, and their articulated mechanical connection.
  • FIG. 4 is a detailed view of the ramp pair (right) of the rolling mill of FIG. 2.
  • FIG. 5 is a partial perspective view of the rolling mill of Figure 2, once the rolling rolls and roller assemblies removed.
  • This mill is a rolling mill known to those skilled in the art under the name "High".
  • Such a mill comprises two working rolls, 3 'and 4', defining the air gap of the strip to be rolled, as well as intermediate rolls, and sets of rollers for supporting rolling rolls.
  • Each working cylinder, upper (referenced 3 ') or lower (referenced 4') is supported by a set of first intermediate cylinders, and a set of second intermediate cylinders, and by several sets of rollers A, B, C, D , E F G H.
  • Said first intermediate cylinders 31 ', 32' (or 41 ', 42'), two in number, bear on the corresponding working cylinder 3 '(resp 4'), themselves supported by the second intermediate cylinders.
  • 33 ', 34', 35 '(resp 43', 44 ', 45') three in number.
  • the second intermediate cylinders 33 ', 34', 35 '(resp 43', 44 ', 45') are themselves supported by the sets of rollers A, B, C, D (respectively E, F, G, H ) four in number.
  • Each ramp 51 '; 52 '; 53 '; 54 ' is integral with a rotation shaft 60' articulated at its ends to the cage in bearings 61 '.
  • Each ramp 51 '; 52 '; 53 '; 54 ' can be rotated by means of a double acting hydraulic cylinder 81'; 82 ', 83', 84 '. More particularly, the body 10 of each cylinder is pivotally articulated to the cage 2, while the rod is articulated on an ear of a ring mounted on the shaft 60 '.
  • the mounting of the ring 62 'on the shaft 60' may be a friction fit.
  • the resulting torque becomes greater than the friction torque of the assembly and allows a sliding in rotation between the shaft 60 'and the ring 62' mounted on the latter: such a friction fit its function is to limit the torque to a threshold value, limiting breaks, allowing the ramps to deviate by rotation along their pivot axis, when the force becomes too great.
  • the hydraulic cylinders 81 ', 82', 83 'and 84', and their hoses are positioned laterally to the sets of rollers, marked A ', D', E 'and H so that the rollers of these sets can not be removed, along the axis of the sets, without prior disassembly of the cylinders and their hoses.
  • the present invention relates to a rolling mill 1 comprising a cage 2 and a pair of working rolls 3,4 able to define the gap of the strip to be rolled, as well as at least one ramp 51, 52, 53, 54 for the spraying a lubricating fluid and / or refrigerant, disposed near the plane of the strip to be rolled.
  • the rolling mill may comprise, for the support of each work roll 3 (or 4), lower or upper:
  • the illustrated embodiment it is more particularly a "High" type mill in which said first intermediate cylinders 31, 32 (or 41, 42), two in number, are supported on the corresponding working cylinder 3 (resp '), themselves supported by the second intermediate cylinders 33, 34, 35 (respectively 43, 44, 45), three in number.
  • the second intermediate cylinders 33, 34, 35 (resp 43 ', 44', 45 ') are themselves supported by the sets of rollers A, B, C, D (respectively E, F, G, H) in the number four.
  • said ramp 51; 52; 53; 54 is
  • each of the ramps is secured to said cage 2 by means of a mechanical link, articulated, said mechanical link comprising elastic means 71; 72; 73; Constraining said ramp 51; 52; 53; 54 to at least one position of use, in the direction of the plane of the strip, and allowing, in the case of a force on said ramp tending to move the ramp, greater than a threshold value, the deformation of the elastic means 71; 72; 73; 74 against their return force, and thus the retraction of the ramp to a position spaced from said at least position of use.
  • the elastic means 71; 72; 73; 74 allow the ramp to move away to avoid breakage. Once this accumulation has been removed, the restoring force of the elastic means enables said ramp to return to said at least one position of use, and without particular maintenance intervention.
  • the rolling mill 1 comprises at least one pair of ramps, the two ramps 1, 52; 53,54 of each pair being disposed respectively, below and above the plane of the strip to be rolled, each of the ramps being secured to said cage by means of a said mechanical connection, articulated, independent, comprising the means elastics 71; 72; 73; 74.
  • the rolling mill comprises two pairs of ramps 51, 52 and 53, 54, the two pairs of ramps being disposed on either side of the rolling plane passing through the axes of the two rolls of work 3,4.
  • said ramp or each of the ramps 51; 52; 53; 54 is articulated to said cage along a pivot connection of the mechanical link, axis of rotation Al; A2; A3; A4, preferably parallel to the plane of the strip to be rolled and perpendicular to the running direction of the strip.
  • the or each ramp 51; 52; 53; 54 may comprise a rotation shaft 60, rigidly secured to the ramp, articulated at its two ends in bearings 61 integral with the cage 2.
  • the elastic means 71; 72; 73; 74 are arranged between the ramp 51; 52; 53; 54 and the cage 2, exerting their restoring force, preferably on the rotation shaft, to cause the rotation of the ramp 51; 52; 53; 54 around the axis of rotation Al; A2; A3; A4 of the pivot link, towards the band.
  • the retraction of the ramp of said at least one position of use towards said spaced position is obtained by a counterclockwise rotation about the axis of rotation Al; A2; A3; A4 of the pivot connection, when an external force on the ramp generates a torque greater than that of the restoring torque of the elastic means.
  • the elastic means 71; 72; 73; 74 work in compression to recall said ramp (or each of the ramps) from the spread position to said at least one position of use.
  • the resilient means work in extension to recall said ramp from the spread position to the position of use.
  • the elastic means 71; 72; 73; 74 comprise one or more metal springs, such as a helical spring extension or compression, or a spring resulting from a stack of Belleville washers.
  • the elastic means comprise a pneumatic spring.
  • said mechanical connection comprises, in addition to said elastic means 71; 72; 73; 74, and the pivot connection, a hydraulic cylinder 81; 82; 83; 84 arranged in series of said elastic means 71; 72; 73; 74 between the cage 2 and the ramp 51; 52; 53; 54 and for modifying the position of the ramp by rotation of the ramp around the axis of rotation Al; A2; A3; A4 of the pivot link.
  • the rod 9 and the body 10 of the hydraulic cylinder 81; 82; 83; 84 can be articulated respectively, on the one hand, to the ramp 51; 52; 53; 54 and, on the other hand, to a bar 91; 92; 93; 94.
  • the end of the rod 9 is articulated to an ear of a ring 61 mounted on the shaft 60 and rigidly secured thereto, along a pivot axis parallel to the axis of rotation A1; A2; A3; A4 of said link pivot of the ramp 51; 52; 53; 54.
  • the assembly between the shaft 60 and the ring 61 prevents any slippage between these two parts.
  • One end of the bar 91; 92; 93; 94 is articulated along a first pivot axis A5 to a support 11 rigidly secured to the cage 2, the other end of the bar being hinged 91; 92; 93; 94 to the body 10 of the cylinder, along a second pivot axis A6 .
  • the axes of pivots A5 and A6 are parallel to the axis of rotation Al; A2; A3; A4 of said pivot connection of the ramp 51; 52; 53; 54.
  • said elastic means 71; 72; 73; 74 constrain said bar 91; 92; 93; 94 to a position in abutment against the support January 1, in said at least one position of use.
  • the elastic means 74 constituted for example by a stack of spring washers (Belleville washers), bear on the bar 94 in order to constrain the latter towards the support 11.
  • said bar 94 (or 91; 92; 93) deviates from this position by a rotation about the first pivot axis A5, causing the deformation of the elastic means 74 (or 71, 72, 73), in particular the compression of the Belleville washers, against the restoring force and so as to allow the pivoting of the ramp 54 (or 51; 52; 53) around its axis of rotation A4 (or Al; A2; A3), and while the corresponding hydraulic cylinder 84 (81; 82; 83) holds its position firmly.
  • the hydraulic cylinder 84 (81; 82; 83), preferably double acting, is an actuator whose function is to allow the adjustment of the position of use and to maintain this position once set. Several positions of use are possible.
  • Modifying the position of the ramp makes it possible, for example, to facilitate the change of the rolling rolls during maintenance, by removing the ramp (s) from the roll to be changed, for example, or may facilitate the insertion of the roll. end of the strip between the work rolls.
  • the ramps 51, 52 (or 53, 54) of said at least one pair form, in at least one of their position (s) of use, two guide elements. , upper and lower, facilitating the insertion of the band between said working rolls.
  • Said ramps 51, 52, 53, 54 are disposed in an inter-space delimited between the working rolls 3,4, lower and upper, the first intermediate rolls 31, 32, 41, 42, lower and upper, said second intermediate rolls 33, 34, 35; 43, 44, 45, lower and upper, and sets of support rollers, lower and upper.
  • said mechanical connections, if any, their hydraulic cylinders 81, 82, 83, 84 and flexible associated with the jacks are arranged in this inter-space, or laterally to the latter, and so as to create a lateral clearance allowing the withdrawal of all the cylinders 31, 32, 33, 34, 35, 41, 42, 43, 44, 45 by sliding along their axis, and the removal of the rollers of the different sets A to H, by sliding along their axis of rotation, without disassembly of said mechanical connections, and if necessary, without disassembly of the cylinders 81,82, 83, 84 and flexible associated with the cylinders.
  • the cylinders 81, 82 (or 83, 84) associated with the ramps 51, 52 (or 53, 54) of one and the same pair can be positioned, in juxtaposition, substantially one behind the other in the direction of the rolling rolls, to limit their size.
  • Hydraulic cylinders respectively associated with said lower left, upper left, upper right and lower right ramps
  • A, B, C, D Sets of rollers resting on the second intermediate cylinders (upper), E, F, G, H. Sets of rollers resting on the second intermediate (lower) rolls,
  • Second intermediate cylinders (lower), 5, 52 ', 53', 54 '. Ramps, respectively lower left, upper left, upper right and lower right,
  • Hydraulic cylinders respectively associated with said lower left, upper left, upper right and lower right ramps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Crushing And Grinding (AREA)
  • Metal Rolling (AREA)
  • Joints Allowing Movement (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

The invention relates to a rolling mill including a frame, at least one pair of working cylinders capable of defining the air gap of the strip to be rolled, as well at least one line (51, 52, 53, 54) for spraying a lubricant and/or coolant fluid, arranged next to the plane of the strip to be rolled. According to the invention, said line (51, 52, 53, 54) is rigidly connected to said frame via a hinged mechanical link, said mechanical link including resilient means (71, 72, 73, 74) forcing said line (51, 52, 53, 54) into at least one operational position, toward the plane of the strip, and allowing, in the event that a force on said line tends to separate the line, greater than a threshold value, the deformation of the resilient means (71, 72, 73, 74) against the return force thereof, and thus the retraction of the line toward a position separated from said at least one operational position.

Description

LAMINOIR, TEL QUE PAR EXEMPLE UN LAMINOIR A FROID  ROLLING MILL, SUCH AS FOR EXAMPLE COLD ROLLING MILL
L'invention est relative à un laminoir, tel que par exemple un laminoir à froid, et plus particulièrement un laminoir connu par l'homme du métier sous l'appellation « 20 High ». The invention relates to a rolling mill, such as for example a cold rolling mill, and more particularly a rolling mill known to those skilled in the art under the name "High".
Un tel laminoir, enseigné par le document US 2.776.586, comprend une cage à l'intérieur de laquelle sont agencés des cylindres de laminage.  Such a rolling mill, taught by US 2,776,586, comprises a cage inside which rolling rolls are arranged.
Les cylindres de laminage comprennent deux cylindres de travail définissant l'entrefer de la bande à laminer, ainsi qu'un jeu de premiers cylindres intermédiaires et un jeu de seconds cylindres intermédiaires pour le soutien de chaque cylindre de travail (inférieur et supérieur).  The rolling rolls comprise two working rolls defining the gap of the strip to be rolled, and a set of first intermediate rolls and a set of intermediate second rolls for supporting each work roll (lower and upper).
Ces cylindres de laminage sont soutenus par plusieurs ensembles de galets prenant appui sur les seconds cylindres intermédiaires, de part et d'autre du plan de la bande à laminer.  These rolling rolls are supported by several sets of rollers bearing on the second intermediate rolls, on either side of the plane of the strip to be rolled.
Dans un laminoir du type « 20 High », les premiers cylindres intermédiaires sont au nombre de deux, et lesdits seconds cylindres intermédiaires sont au nombre de trois (pour chaque cylindre de travail, supérieur ou inférieur). Huit ensembles de galets prennent appui sur les seconds cylindres intermédiaires, de part et d'autre du plan de la bande à laminer.  In a rolling mill of the "High" type, the first intermediate rolls are two in number, and the said second intermediate rolls are three in number (for each working roll, upper or lower). Eight sets of rollers are supported on the second intermediate cylinders, on either side of the plane of the strip to be rolled.
II est par ailleurs connu de lubrifier/refroidir la bande et/ou les cylindres de travail par l'aspersion d'un fluide refroidissant/lubrifiant, en partie supérieure et en partie inférieure de la bande.  It is also known to lubricate / cool the strip and / or the working rolls by spraying a coolant / lubricant fluid, in the upper part and in the lower part of the strip.
La projection de ce fluide est typiquement assurée par des rampes d'aspersion, repérées The projection of this fluid is typically provided by spray bars, identified
56a et 57 à la figure 4 du document US 2.776.586. 56a and 57 in Figure 4 of US 2,776,586.
Ces rampes s'étendent sur la largeur de la bande à laminer, dans la cage du laminoir, au niveau d'un inter-espace entre les cylindres intermédiaires supérieurs, d'une part, et les cylindres intermédiaires inférieurs, d'autre part. Ces rampes sont classiquement positionnées à proximité des cylindres de travail.  These ramps extend over the width of the strip to be rolled, in the roll stand, at an inter-space between the upper intermediate rolls, on the one hand, and the lower intermediate rolls, on the other hand. These ramps are classically positioned near the work rolls.
De tels laminoirs comprennent typiquement deux paires de rampes, les deux rampes de chaque paire étant disposées respectivement en dessous et au-dessus du plan de la bande à laminer. Les deux paires de rampes sont disposées classiquement de part et d'autre du plan de laminage passant par les axes des cylindres de travail. Chacune des rampes peut être articulée en pivot à la cage, afin de permettre le réglage de la position de la rampe par rapport à la bande, ou encore par rapport aux cylindres à proximité. Ce réglage s'effectue par rotation de la rampe autour de son axe de pivot, sensiblement parallèle au plan de la bande et perpendiculaire à la direction de défilement de la bande. A cet effet, chaque rampe présente un arbre de rotation, monté libre de rotation, au niveau de ses extrémités, dans des paliers solidaires de la cage. Un vérin hydraulique, reliant la cage et l'arbre, permet d'actionner en rotation la rampe, puis de maintenir fermement la rampe à la position souhaitée. Such rolling mills typically comprise two pairs of ramps, the two ramps of each pair being disposed respectively below and above the plane of the strip to be rolled. The two pairs of ramps are conventionally arranged on either side of the rolling plane passing through the axes of the working rolls. Each of the ramps can be pivotally articulated to the cage, to allow the adjustment of the position of the ramp relative to the band, or relative to the cylinders nearby. This adjustment is effected by rotation of the ramp around its pivot axis, substantially parallel to the plane of the strip and perpendicular to the running direction of the strip. For this purpose, each ramp has a rotation shaft, mounted free of rotation, at its ends, in bearings integral with the cage. A hydraulic cylinder, connecting the cage and the shaft, makes it possible to rotate the boom and then firmly hold the boom in the desired position.
Les différentes positions possibles des rampes peuvent permettre, notamment, de faciliter le retrait des cylindres, en écartant la ou les rampes du cylindre à changer. Les différentes positions peuvent permettre également de faciliter l'insertion de la bande entre les cylindres de travail. Ainsi, et par exemple, les rampes de la paire située en amont, selon le sens d'insertion de la bande, peuvent être rapprochées l'une de l'autre afin de guider physiquement l'extrémité de la bande à introduire au niveau de l'entrefer des cylindres de travail, les rampes de l'autre paire pouvant être écartées afin de faciliter la reprise de la bande, en aval des cylindres de travail.  The different possible positions of the ramps can, in particular, facilitate the removal of the cylinders, by removing the ramp or the cylinder to change. The different positions can also facilitate the insertion of the strip between the working rolls. Thus, and for example, the ramps of the upstream pair, according to the insertion direction of the strip, can be brought closer to one another in order to physically guide the end of the strip to be introduced at the level of the air gap of the working rolls, the ramps of the other pair can be spaced to facilitate the recovery of the band, downstream of the work rolls.
En fonctionnement, dans le cas d'une anomalie, en particulier en cas de rupture de bande, il n'est pas rare qu'une accumulation de bande se forme entre les rampes alors que les vérins s'opposent fermement à leur écartement, et ne provoquent ainsi la rupture de celles-ci (ou de leur support), lorsque l'effort sur les rampes devient trop important.  In operation, in the case of an anomaly, in particular in case of web breakage, it is not uncommon for tape accumulation to form between the ramps while the cylinders strongly oppose their spacing, and do not cause the breakage of these (or their support), when the effort on the ramps becomes too important.
Afin de pallier ce problème, il est connu de l'état de la technique de prévoir un montage par frottement, entre une bague solidaire de la tige du vérin et l'arbre de rotation, rigidement solidaire de la rampe. Lorsque l'effort sur la rampe devient trop important, le couple en résultant devient supérieur au couple de frottement du montage et autorise un glissement en rotation entre l'arbre et la bague montée sur ce dernier ; un tel montage par frottement a pour fonction de limiter le couple à une valeur seuil, limitant les casses, permettant aux rampes de s'écarter par rotation suivant leur axe de pivot, lorsque l'effort devient trop important.  To overcome this problem, it is known from the state of the art to provide a friction fit, between a ring integral with the rod of the cylinder and the rotation shaft, rigidly secured to the ramp. When the force on the ramp becomes too great, the resulting torque becomes greater than the friction torque of the assembly and allows a sliding rotation between the shaft and the ring mounted on the latter; such a friction fitting has the function of limiting the torque to a threshold value, limiting breaks, allowing the ramps to deviate by rotation along their pivot axis, when the force becomes too great.
En revanche, et selon les constatations de l'inventeur un tel montage par frottement crée d'autres problèmes. Tout d'abord, un tel montage par frottement ne tolère pas les approximations de montage en ce qu'il nécessite un serrage précis de ces organes (i.e. des vis) pour régler le couple de frottement du montage à la valeur souhaitée. On the other hand, and according to the findings of the inventor, such friction fitting creates other problems. First, such a friction fit does not tolerate mounting approximations in that it requires precise clamping of these bodies (ie screws) to adjust the friction torque of the assembly to the desired value.
En pratique, et selon les constatations de l'inventeur, il n'est pas rare de constater un mauvais serrage de ce montage : en cas de serrage trop important, le couple de frottement devient trop important et ne permet plus d'éviter les casses. Au contraire, dans le cas d'un serrage trop faible, les positions des rampes se dérégleront trop facilement dès la moindre sollicitation.  In practice, and according to the findings of the inventor, it is not uncommon to note a poor tightening of this assembly: in case of excessive tightening, the friction torque becomes too important and no longer prevents breakage . On the contrary, in the case of too low a tightening, the positions of the ramps will be too easily disrupted at the slightest stress.
Un autre désavantage inhérent à ce montage est qu'il nécessite une intervention de maintenance à chaque fois qu'un glissement se produit afin de repositionner correctement la rampe.  Another disadvantage inherent in this arrangement is that it requires a maintenance action every time a slip occurs in order to correctly reposition the ramp.
Le but de la présente invention est de pallier les inconvénients précités, en proposant un laminoir équipé d'au moins une rampe, et limitant les casses, en particulier en cas de rupture de bande.  The object of the present invention is to overcome the aforementioned drawbacks, by proposing a rolling mill equipped with at least one ramp, and limiting breakages, in particular in the event of breakage of the strip.
Un autre but de la présente invention est de proposer un tel laminoir qui supprime ou simplifie la maintenance, en particulier après une casse de bande.  Another object of the present invention is to provide such a mill that eliminates or simplifies maintenance, especially after a breakage band.
D'autres but et avantages apparaîtront au cours de la description qui va suivre qui n'est donnée qu'à titre indicatif et qui n'a pas pour but de la limiter.  Other purposes and advantages will become apparent from the following description which is given for information only and which is not intended to limit it.
L'invention concerne tout d'abord un laminoir comprenant une cage, au moins une paire de cylindres de travail, aptes à définir l'entrefer de la bande à laminer, ainsi qu'au moins une rampe pour l'aspersion d'un fluide lubrifiant et/ou réfrigérant, disposée à proximité du plan de la bande à laminer.  The invention firstly relates to a rolling mill comprising a cage, at least one pair of working rolls, capable of defining the air gap of the strip to be rolled, as well as at least one ramp for spraying a fluid. lubricant and / or refrigerant, disposed near the plane of the strip to be rolled.
Selon l'invention, ladite rampe est solidarisée à ladite cage par l'intermédiaire d'une liaison mécanique, ladite liaison mécanique, articulée, comprenant des moyens élastiques contraignant ladite rampe vers au moins une position d'utilisation, en direction du plan de la bande, et autorisant, dans le cas d'un effort sur ladite rampe tendant à écarter la rampe, supérieur à une valeur seuil, la déformation des moyens élastiques à Γ encontre de leur force de rappel, et ainsi l'escamotage de la rampe vers une position écartée de ladite au moins position d'utilisation. Selon un mode de réalisation, ladite rampe est articulée à ladite cage, suivant une liaison pivot de la liaison mécanique, de préférence d'axe de rotation parallèle au plan de la bande à laminer et perpendiculaire à la direction de défilement de la bande, les moyens élastiques étant disposés entre la rampe et la cage, exerçant leur force rappel pour provoquer la rotation de la rampe autour de l'axe de rotation de la liaison pivot, en direction de la bande, l'escamotage de la rampe de ladite au moins une position d'utilisation vers ladite position écartée étant obtenu par une rotation contraire, autour de l'axe de rotation de la liaison pivot. According to the invention, said ramp is secured to said cage by means of a mechanical connection, said articulated mechanical connection comprising elastic means constraining said ramp to at least one position of use, in the direction of the plane of the band, and authorizing, in the case of a force on said ramp tending to move the ramp, greater than a threshold value, the deformation of the elastic means against their restoring force, and thus the retraction of the ramp towards a position spaced from said at least one position of use. According to one embodiment, said ramp is articulated to said cage, following a pivot connection of the mechanical connection, preferably of axis of rotation parallel to the plane of the strip to be rolled and perpendicular to the running direction of the strip, the elastic means being disposed between the ramp and the cage, exerting their return force to cause the rotation of the ramp around the axis of rotation of the pivot connection, in the direction of the strip, the retraction of the ramp of said at least a position of use towards said spaced position being obtained by an opposite rotation, about the axis of rotation of the pivot connection.
Selon un mode de réalisation, les moyens élastiques travaillent en compression pour rappeler ladite rampe de la position écartée vers ladite au moins une position d'utilisation. Alternativement, et selon un autre mode de réalisation, les moyens élastiques travaillent en extension pour rappeler ladite rampe de la position écartée vers la position d'utilisation.  According to one embodiment, the resilient means work in compression to return said ramp from the position spaced towards said at least one position of use. Alternatively, and according to another embodiment, the resilient means work in extension to return said ramp from the spread position to the position of use.
Selon un mode de réalisation, ladite liaison mécanique comprend, outre lesdits moyens élastiques, et la liaison pivot, un vérin hydraulique disposé en série desdits moyens élastiques entre la cage et la rampe et, permettant de régler la ou les positions d'utilisation de la rampe par rotation de la rampe autour de l'axe de la liaison pivot.  According to one embodiment, said mechanical connection comprises, in addition to said elastic means, and the pivot connection, a hydraulic jack arranged in series with said elastic means between the cage and the ramp and, making it possible to adjust the position or positions of use of the ramp by rotation of the ramp around the axis of the pivot connection.
Selon un mode de réalisation, la tige et le corps du vérin hydraulique sont articulés respectivement, d'une part, à une oreille, rigidement solidaire de la rampe et, d'autre part, à une barre dont l'une des extrémités est articulée suivant un premier axe de pivot à un support rigidement solidaire de la cage, l'autre extrémité de la barre étant articulée au corps du vérin hydraulique, suivant un second axe de pivot, lesdits moyens élastiques contraignant ladite barre vers une position en butée contre le support dans ladite au moins une position d'utilisation, et dans lequel, dans le cas d'un effort supérieur à ladite valeur seuil, ladite barre s'écarte de cette position par une rotation autour du premier axe de pivot en provoquant la déformation des moyens élastiques à l'encontre de la force de rappel et de manière à autoriser le pivotement de la rampe autour de l'axe de rotation de ladite liaison pivot.  According to one embodiment, the rod and the body of the hydraulic cylinder are articulated respectively, on the one hand, to an ear, rigidly secured to the ramp and, on the other hand, to a bar whose one end is articulated along a first pivot axis to a support rigidly secured to the cage, the other end of the bar being articulated to the body of the hydraulic cylinder, along a second pivot axis, said elastic means constraining said bar to a position in abutment against the support in said at least one position of use, and wherein, in the case of a force greater than said threshold value, said bar deviates from this position by a rotation about the first pivot axis causing the deformation of the elastic means against the return force and so as to allow the pivoting of the ramp around the axis of rotation of said pivot connection.
Selon un mode de réalisation, les moyens élastiques comprennent un ou plusieurs ressorts métalliques, tel qu'un ressort hélicoïdale en extension ou en compression, ou encore un ressort résultant d'un empilement de rondelles Belleville. Les moyens élastiques peuvent encore comprendre un ressort pneumatique, selon une autre alternative.  According to one embodiment, the elastic means comprise one or more metal springs, such as a helical spring in extension or compression, or a spring resulting from a stack of Belleville washers. The elastic means may further comprise a pneumatic spring, according to another alternative.
Selon un mode de réalisation, le laminoir comprend, pour le soutien de chaque cylindre de travail, inférieur ou supérieur : - un jeu de premiers cylindres intermédiaires, chacun en appui sur ledit cylindre de travail, According to one embodiment, the rolling mill comprises, for the support of each work roll, lower or upper: a set of intermediate first cylinders, each bearing on said working cylinder,
- un jeu de seconds cylindres intermédiaires en appui sur les premiers cylindres intermédiaires,  a set of intermediate second cylinders resting on the first intermediate cylinders,
- plusieurs ensembles de galets, en appui sur les seconds cylindres intermédiaires. - Several sets of rollers, bearing on the second intermediate cylinders.
Selon un mode de réalisation, le laminoir comprend au moins une paire de rampes, les deux rampes de chaque paire étant disposées respectivement en dessous et au-dessus du plan de la bande à laminer, chacune des rampes étant solidarisée à ladite cage par l'intermédiaire d'une dite liaison mécanique, articulée, indépendante, comprenant les moyens élastiques. De préférence, le laminoir comprend deux paires de rampes, les deux paires de rampes étant disposées de part et d'autre du plan de laminage passant par les axes des deux cylindres de travail.  According to one embodiment, the rolling mill comprises at least one pair of ramps, the two ramps of each pair being disposed respectively below and above the plane of the strip to be rolled, each of the ramps being secured to said cage by the intermediate of a said mechanical link, articulated, independent, comprising the elastic means. Preferably, the rolling mill comprises two pairs of ramps, the two pairs of ramps being disposed on either side of the rolling plane passing through the axes of the two working rolls.
Selon un mode de réalisation, les rampes de ladite au moins une paire forment, dans l'une au moins de leur(s) position(s) d'utilisation deux éléments de guidage, supérieur et inférieur, facilitant l'insertion de la bande entre lesdits cylindres de travail.  According to one embodiment, the ramps of said at least one pair form, in at least one of their position (s) of use, two guide elements, upper and lower, facilitating insertion of the strip. between said working rolls.
Selon un mode de réalisation, lesdites rampes sont disposées dans un interespace délimité entre les cylindres de travail, inférieurs et supérieurs, les premiers cylindres intermédiaires, inférieurs et supérieurs, lesdits seconds cylindres intermédiaires, inférieurs et supérieurs, et les galets d'appui, inférieurs et supérieurs, lesdites liaisons mécaniques, éventuellement leurs vérins hydrauliques et flexibles associés aux vérins, étant disposés dans cet inter-espace, ou latéralement à ce dernier, et de telle façon à créer un dégagement latéral autorisant le retrait de l'ensemble des cylindres par coulissement suivant leur axe, ainsi que le retrait des galets des différents ensembles, par coulissement suivant leur axe de rotation, sans démontage desdites liaisons mécaniques, le cas échéant, sans démontage des vérins et flexibles associés aux vérins.  According to one embodiment, said ramps are arranged in an interspace defined between the working rolls, lower and upper, the first intermediate cylinders, lower and upper, said second intermediate rolls, lower and upper, and the lower rollers, and higher, said mechanical links, possibly their hydraulic and flexible cylinders associated with the cylinders, being disposed in this inter-space, or laterally to the latter, and in such a way as to create a lateral clearance allowing the withdrawal of all the cylinders by sliding along their axis, as well as the removal of the rollers of the different assemblies, by sliding along their axis of rotation, without disassembly of said mechanical connections, if necessary, without disassembly of the cylinders and hoses associated with the cylinders.
L'invention sera mieux comprise à la lecture de la description suivante accompagnée des dessins en annexe, parmi lesquels : The invention will be better understood on reading the following description accompanied by the appended drawings, among which:
- La figure 1 est une vue de côté d'un laminoir du type « 20 High » équipé de rampes, selon un état de la technique. - La figure 2 est une vue de côté d'un laminoir du type « 20 High » équipé de rampes, conforme à l'invention selon un mode de réalisation. - Figure 1 is a side view of a rolling mill type "20 High" equipped with ramps, according to a state of the art. - Figure 2 is a side view of a type mill "High" equipped with ramps, according to the invention according to one embodiment.
- La figure 3 est une vue de détail des rampes de la figure 2, ainsi que de leur liaison mécanique articulée.  - Figure 3 is a detailed view of the ramps of Figure 2, and their articulated mechanical connection.
- La figure 4 est une vue de détail de la paire de rampe (droite) du laminoir de la figure 2. FIG. 4 is a detailed view of the ramp pair (right) of the rolling mill of FIG. 2.
- La figure 5 est une vue en perspective partielle du laminoir de la figure 2, une fois les cylindres de laminage et ensembles de galets retirés.  - Figure 5 is a partial perspective view of the rolling mill of Figure 2, once the rolling rolls and roller assemblies removed.
Nous commençons par décrire un laminoir tel que connu de l'état de la technique et illustré à la figure 1. Ce laminoir est un laminoir connu par l'homme du métier sous l'appellation « 20 High ». Un tel laminoir comprend deux cylindres de travail, 3 ' et 4', définissant l'entrefer de la bande à laminer, ainsi que des cylindres intermédiaires, et des ensembles de galets pour le soutien des cylindres de laminage. Chaque cylindre de travail, supérieur (référencé 3') ou inférieur (référencé 4') est soutenu par un jeu de premiers cylindres intermédiaires, et un jeu de seconds cylindres intermédiaires, ainsi que par plusieurs ensembles de galets A, B, C, D, E ,F, G, H.  We begin by describing a rolling mill as known from the state of the art and illustrated in Figure 1. This mill is a rolling mill known to those skilled in the art under the name "High". Such a mill comprises two working rolls, 3 'and 4', defining the air gap of the strip to be rolled, as well as intermediate rolls, and sets of rollers for supporting rolling rolls. Each working cylinder, upper (referenced 3 ') or lower (referenced 4') is supported by a set of first intermediate cylinders, and a set of second intermediate cylinders, and by several sets of rollers A, B, C, D , E F G H.
Lesdits premiers cylindres intermédiaires 31 ', 32' (resp. 41 ', 42'), au nombre de deux, sont en appui sur le cylindre de travail correspondant 3' (resp 4'), eux-mêmes soutenus par les seconds cylindres intermédiaires 33', 34', 35' (resp 43', 44', 45'), au nombre de trois. Les seconds cylindres intermédiaires 33 ', 34', 35' (resp 43', 44', 45') sont eux-mêmes soutenus par les ensembles de galets A, B, C, D (resp. E, F, G, H) au nombre de quatre.  Said first intermediate cylinders 31 ', 32' (or 41 ', 42'), two in number, bear on the corresponding working cylinder 3 '(resp 4'), themselves supported by the second intermediate cylinders. 33 ', 34', 35 '(resp 43', 44 ', 45'), three in number. The second intermediate cylinders 33 ', 34', 35 '(resp 43', 44 ', 45') are themselves supported by the sets of rollers A, B, C, D (respectively E, F, G, H ) four in number.
Deux paires de rampes 5 , 52' et 53 ', 54' sont disposées dans la cage 2' du laminoir et permettent chacune de lubrifier/refroidir la bande et les cylindres de laminage, par le dessus et le dessous. Ces rampes sont positionnées dans la cage, au niveau d'un inter-espace entre les cylindres de laminage. Les deux paires 5 ,52' et 53', 54' sont positionnées, respectivement de part et d'autre du plan de laminage, passant par les axes des deux cylindres de travail 3' et 4'.  Two pairs of ramps 5, 52 'and 53', 54 'are arranged in the roll mill stand 2' and each make it possible to lubricate / cool the strip and the rolling rolls, from above and below. These ramps are positioned in the cage, at an inter-space between the rolling rolls. The two pairs 5, 52 'and 53', 54 'are positioned respectively on either side of the rolling plane, passing through the axes of the two working rolls 3' and 4 '.
Chaque rampe 51 ' ; 52' ; 53 ' ; 54' est solidaire d'un arbre de rotation 60' articulé à ses extrémités à la cage dans des paliers 61 '. Chaque rampe 51 ' ; 52' ; 53 ' ; 54' peut être déplacée en rotation au moyen d'un vérin hydraulique double effet 81 ' ; 82', 83', 84'. Plus particulièrement, le corps 10 de chaque vérin est articulé en pivot à la cage 2, tandis que la tige est articulée sur une oreille d'une bague montée sur l'arbre 60'. Each ramp 51 '; 52 '; 53 '; 54 'is integral with a rotation shaft 60' articulated at its ends to the cage in bearings 61 '. Each ramp 51 '; 52 '; 53 '; 54 'can be rotated by means of a double acting hydraulic cylinder 81'; 82 ', 83', 84 '. More particularly, the body 10 of each cylinder is pivotally articulated to the cage 2, while the rod is articulated on an ear of a ring mounted on the shaft 60 '.
De manière connue, le montage de la bague 62' sur l'arbre 60' peut être un montage par frottement. Lorsque l'effort sur la rampe devient trop important, le couple en résultant devient supérieur au couple de frottement du montage et autorise un glissement en rotation entre l'arbre 60' et la bague 62' montée sur ce dernier : un tel montage par frottement a pour fonction de limiter le couple à une valeur seuil, limitant les casses, permettant aux rampes de s'écarter par rotation suivant leur axe de pivot, lorsque l'effort devient trop important.  In known manner, the mounting of the ring 62 'on the shaft 60' may be a friction fit. When the force on the ramp becomes too great, the resulting torque becomes greater than the friction torque of the assembly and allows a sliding in rotation between the shaft 60 'and the ring 62' mounted on the latter: such a friction fit its function is to limit the torque to a threshold value, limiting breaks, allowing the ramps to deviate by rotation along their pivot axis, when the force becomes too great.
Un tel montage par frottement engendre les problèmes identifiés dans l'introduction de la présente demande, et notamment la nécessité d'une maintenance afin d'assurer le repositionnement correct des rampes à chaque fois que cette sécurité est sollicitée et ne provoque un glissement entre la bague et l'arbre de la rampe.  Such a friction fit causes the problems identified in the introduction of the present application, and in particular the need for maintenance to ensure the correct repositioning of the ramps each time this security is requested and causes a slip between the ring and the tree of the ramp.
On notera que, dans cet état de la technique, les vérins hydrauliques 81 ',82', 83' et 84', ainsi que leurs flexibles, sont positionnés latéralement aux ensembles de galets, repérés A', D', E' et H' de sorte que les galets de ces ensembles ne peuvent être retirés, suivant l'axe des ensembles, sans démontage préalable des vérins et de leurs flexibles.  Note that, in this state of the art, the hydraulic cylinders 81 ', 82', 83 'and 84', and their hoses, are positioned laterally to the sets of rollers, marked A ', D', E 'and H so that the rollers of these sets can not be removed, along the axis of the sets, without prior disassembly of the cylinders and their hoses.
La présente invention concerne un laminoir 1 comprenant une cage 2 et une paire de cylindres de travail 3,4 aptes à définir l'entrefer de la bande à laminer, ainsi qu'au moins une rampe 51, 52, 53, 54 pour l'aspersion d'un fluide lubrifiant et/ou réfrigérant, disposée à proximité du plan de la bande à laminer.  The present invention relates to a rolling mill 1 comprising a cage 2 and a pair of working rolls 3,4 able to define the gap of the strip to be rolled, as well as at least one ramp 51, 52, 53, 54 for the spraying a lubricating fluid and / or refrigerant, disposed near the plane of the strip to be rolled.
Le laminoir peut comprendre, pour le soutien de chaque cylindre de travail 3 (ou 4), inférieur ou supérieur :  The rolling mill may comprise, for the support of each work roll 3 (or 4), lower or upper:
- un jeu de premiers cylindres intermédiaires 31, 32 (ou 41, 42) chacun en appui sur ledit cylindre de travail 3 (ou 4),  a set of intermediate cylinders 31, 32 (or 41, 42) each resting on said working cylinder 3 (or 4),
- un jeu de seconds cylindres intermédiaires 33, 34, 35 (ou 43, 44, 45) en appui sur les premiers cylindres intermédiaires,  a set of intermediate second cylinders 33, 34, 35 (or 43, 44, 45) bearing on the first intermediate cylinders,
- plusieurs ensembles de galets A,B,C,D (ou E,F,G,H), en appui sur les seconds cylindres intermédiaires 33, 34, 35 (ou 43, 44, 45).  - Several sets of rollers A, B, C, D (or E, F, G, H) resting on the second intermediate rolls 33, 34, 35 (or 43, 44, 45).
Selon le mode de réalisation illustré, il s'agit plus particulièrement d'un laminoir du type « 20 High » dans lequel lesdits premiers cylindres intermédiaires 31 , 32 (resp. 41 , 42), au nombre de deux, sont en appui sur le cylindre de travail correspondant 3 (resp '), eux-mêmes soutenus par les seconds cylindres intermédiaires 33, 34, 35 (resp 43, 44, 45), au nombre de trois. Les seconds cylindres intermédiaires 33, 34, 35 (resp 43', 44', 45') sont eux-mêmes soutenus par les ensembles de galets A, B, C, D (resp. E, F, G, H) au nombre de quatre. According to the illustrated embodiment, it is more particularly a "High" type mill in which said first intermediate cylinders 31, 32 (or 41, 42), two in number, are supported on the corresponding working cylinder 3 (resp '), themselves supported by the second intermediate cylinders 33, 34, 35 (respectively 43, 44, 45), three in number. The second intermediate cylinders 33, 34, 35 (resp 43 ', 44', 45 ') are themselves supported by the sets of rollers A, B, C, D (respectively E, F, G, H) in the number four.
Selon une caractéristique essentielle de l'invention, ladite rampe 51 ; 52 ; 53 ; 54 According to an essential characteristic of the invention, said ramp 51; 52; 53; 54
(ou chacune des rampes) est solidarisée à ladite cage 2 par l'intermédiaire d'une liaison mécanique, articulée, ladite liaison mécanique comprenant des moyens élastiques 71 ; 72; 73; 74 contraignant ladite rampe 51 ; 52 ; 53 ; 54 vers au moins une position d'utilisation, en direction du plan de la bande, et autorisant, dans le cas d'un effort sur ladite rampe tendant à écarter la rampe, supérieur à une valeur seuil, la déformation des moyens élastiques 71 ; 72; 73; 74 à l' encontre de leur force de rappel, et ainsi l'escamotage de la rampe vers une position écartée de ladite au moins position d'utilisation. (or each of the ramps) is secured to said cage 2 by means of a mechanical link, articulated, said mechanical link comprising elastic means 71; 72; 73; Constraining said ramp 51; 52; 53; 54 to at least one position of use, in the direction of the plane of the strip, and allowing, in the case of a force on said ramp tending to move the ramp, greater than a threshold value, the deformation of the elastic means 71; 72; 73; 74 against their return force, and thus the retraction of the ramp to a position spaced from said at least position of use.
Dans le cas d'une anomalie, en particulier d'une rupture de bande et de la formation d'une accumulation de bande dans la cage, les moyens élastiques 71 ; 72; 73; 74 permettent à la rampe de s' écarter afin d' éviter les casses. Une fois cette accumulation retirée, la force de rappel des moyens élastiques, permet à ladite rampe de retourner vers ladite au moins une position d'utilisation, et sans intervention de maintenance particulière.  In the case of an anomaly, in particular of a band rupture and the formation of a band accumulation in the cage, the elastic means 71; 72; 73; 74 allow the ramp to move away to avoid breakage. Once this accumulation has been removed, the restoring force of the elastic means enables said ramp to return to said at least one position of use, and without particular maintenance intervention.
De préférence, selon le mode de réalisation illustré, le laminoir 1 comprend au moins une paire de rampes, les deux rampes 5 1 ,52 ; 53,54 de chaque paire étant disposées respectivement, en dessous et au-dessus du plan de la bande à laminer, chacune des rampes étant solidarisée à ladite cage par l'intermédiaire d'une dite liaison mécanique, articulée, indépendante, comprenant les moyens élastiques 71; 72; 73; 74.  Preferably, according to the illustrated embodiment, the rolling mill 1 comprises at least one pair of ramps, the two ramps 1, 52; 53,54 of each pair being disposed respectively, below and above the plane of the strip to be rolled, each of the ramps being secured to said cage by means of a said mechanical connection, articulated, independent, comprising the means elastics 71; 72; 73; 74.
De préférence, selon un mode de réalisation illustré, le laminoir comprend deux paires de rampes 51 ,52 et 53,54, les deux paires de rampes étant disposées de part et d'autre du plan de laminage passant par les axes des deux cylindres de travail 3,4.  Preferably, according to an illustrated embodiment, the rolling mill comprises two pairs of ramps 51, 52 and 53, 54, the two pairs of ramps being disposed on either side of the rolling plane passing through the axes of the two rolls of work 3,4.
Selon un mode de réalisation, ladite rampe ou chacune des rampes 51 ; 52 ; 53 ; 54 est articulée à ladite cage suivant une liaison pivot de la liaison mécanique, d'axe de rotation Al ; A2; A3; A4, de préférence parallèle au plan de la bande à laminer et perpendiculaire à la direction de défilement de la bande. A cet effet, la ou chaque rampe 51 ; 52 ; 53 ; 54 peut comprendre un arbre de rotation 60, rigidement solidaire de la rampe, articulé à ses deux extrémités dans des paliers 61 solidaires de la cage 2. According to one embodiment, said ramp or each of the ramps 51; 52; 53; 54 is articulated to said cage along a pivot connection of the mechanical link, axis of rotation Al; A2; A3; A4, preferably parallel to the plane of the strip to be rolled and perpendicular to the running direction of the strip. For this purpose, the or each ramp 51; 52; 53; 54 may comprise a rotation shaft 60, rigidly secured to the ramp, articulated at its two ends in bearings 61 integral with the cage 2.
Les moyens élastiques 71 ; 72; 73; 74 sont disposés entre la rampe 51 ; 52 ; 53 ; 54 et la cage 2, exerçant leur force de rappel, de préférence sur l'arbre de rotation, pour provoquer la rotation de la rampe 51 ; 52 ; 53 ; 54 autour de l'axe de rotation Al ; A2; A3; A4 de la liaison pivot, en direction de la bande. L'escamotage de la rampe de ladite au moins une position d'utilisation vers ladite position écartée est obtenu par une rotation contraire, autour de l'axe de rotation Al ; A2; A3; A4 de la liaison pivot, lorsque un effort extérieur sur la rampe engendre un couple supérieur à celui du couple de rappel des moyens élastiques.  The elastic means 71; 72; 73; 74 are arranged between the ramp 51; 52; 53; 54 and the cage 2, exerting their restoring force, preferably on the rotation shaft, to cause the rotation of the ramp 51; 52; 53; 54 around the axis of rotation Al; A2; A3; A4 of the pivot link, towards the band. The retraction of the ramp of said at least one position of use towards said spaced position is obtained by a counterclockwise rotation about the axis of rotation Al; A2; A3; A4 of the pivot connection, when an external force on the ramp generates a torque greater than that of the restoring torque of the elastic means.
Selon un mode de réalisation illustré, les moyens élastiques 71 ; 72; 73; 74 travaillent en compression pour rappeler ladite rampe (ou chacune des rampes) de la position écartée vers ladite au moins une position d'utilisation. Alternativement, selon un mode de réalisation non illustré, les moyens élastiques travaillent en extension pour rappeler ladite rampe de la position écartée vers la position d'utilisation.  According to an illustrated embodiment, the elastic means 71; 72; 73; 74 work in compression to recall said ramp (or each of the ramps) from the spread position to said at least one position of use. Alternatively, according to a non-illustrated embodiment, the resilient means work in extension to recall said ramp from the spread position to the position of use.
Selon un mode de réalisation, les moyens élastiques 71; 72; 73; 74 comprennent un ou plusieurs ressorts métalliques, tel qu'un ressort hélicoïdale en extension ou en compression, ou encore un ressort résultant d'un empilement de rondelles Belleville. Selon un autre mode de réalisation non illustré, les moyens élastiques comprennent un ressort pneumatique.  According to one embodiment, the elastic means 71; 72; 73; 74 comprise one or more metal springs, such as a helical spring extension or compression, or a spring resulting from a stack of Belleville washers. According to another embodiment not illustrated, the elastic means comprise a pneumatic spring.
Selon un mode de réalisation avantageux, ladite liaison mécanique comprend, outre lesdits moyens élastiques 71 ; 72; 73; 74, et la liaison pivot, un vérin hydraulique 81 ; 82 ; 83 ; 84 disposé en série desdits moyens élastiques 71; 72; 73; 74 entre la cage 2 et la rampe 51 ; 52 ; 53 ; 54 et permettant de modifier la position de la rampe par rotation de la rampe autour de l'axe de rotation Al ; A2; A3; A4 de la liaison pivot.  According to an advantageous embodiment, said mechanical connection comprises, in addition to said elastic means 71; 72; 73; 74, and the pivot connection, a hydraulic cylinder 81; 82; 83; 84 arranged in series of said elastic means 71; 72; 73; 74 between the cage 2 and the ramp 51; 52; 53; 54 and for modifying the position of the ramp by rotation of the ramp around the axis of rotation Al; A2; A3; A4 of the pivot link.
Selon un mode de réalisation illustré, la tige 9 et le corps 10 du vérin hydraulique 81 ; 82 ; 83 ; 84 peuvent être articulés respectivement, d'une part, à la rampe 51 ; 52 ; 53 ; 54 et, d'autre part, à une barre 91 ;92 ;93 ;94.  According to an illustrated embodiment, the rod 9 and the body 10 of the hydraulic cylinder 81; 82; 83; 84 can be articulated respectively, on the one hand, to the ramp 51; 52; 53; 54 and, on the other hand, to a bar 91; 92; 93; 94.
Plus particulièrement, l'extrémité de la tige 9 est articulée à une oreille d'une bague 61 montée sur l'arbre 60 et rigidement solidaire de ce dernier, suivant un pivot d'axe parallèle à l'axe de rotation Al ; A2; A3; A4 de ladite liaison pivot de la rampe 51 ; 52 ; 53 ; 54. De préférence, le montage entre l'arbre 60 et la bague 61 interdit tout glissement entre ces deux pièces. More particularly, the end of the rod 9 is articulated to an ear of a ring 61 mounted on the shaft 60 and rigidly secured thereto, along a pivot axis parallel to the axis of rotation A1; A2; A3; A4 of said link pivot of the ramp 51; 52; 53; 54. Preferably, the assembly between the shaft 60 and the ring 61 prevents any slippage between these two parts.
L'une des extrémités de la barre 91; 92; 93; 94 est articulée suivant un premier axe de pivot A5 à un support 11 rigidement solidaire de la cage 2, l'autre extrémité de la barre étant articulée 91 ;92 ;93 ;94 au corps 10 du vérin, suivant un second axe de pivot A6. Les axes de pivots A5 et A6 sont parallèles à l'axe de rotation Al ; A2; A3; A4 de ladite liaison pivot de la rampe 51 ; 52 ; 53 ; 54.  One end of the bar 91; 92; 93; 94 is articulated along a first pivot axis A5 to a support 11 rigidly secured to the cage 2, the other end of the bar being hinged 91; 92; 93; 94 to the body 10 of the cylinder, along a second pivot axis A6 . The axes of pivots A5 and A6 are parallel to the axis of rotation Al; A2; A3; A4 of said pivot connection of the ramp 51; 52; 53; 54.
Selon ce mode de réalisation illustré, lesdits moyens élastiques 71 ; 72; 73; 74, contraignent ladite barre 91 ;92 ;93 ;94 vers une position en butée contre le support 1 1, dans ladite au moins une position d'utilisation.  According to this illustrated embodiment, said elastic means 71; 72; 73; 74, constrain said bar 91; 92; 93; 94 to a position in abutment against the support January 1, in said at least one position of use.
Tels qu'illustrés à la figure 4, les moyens élastiques 74, constitués à titre d'exemple par un empilement de rondelles ressort (rondelles Belleville), sont en appui sur la barre 94 afin de contraindre cette dernière en direction du support 11.  As illustrated in FIG. 4, the elastic means 74, constituted for example by a stack of spring washers (Belleville washers), bear on the bar 94 in order to constrain the latter towards the support 11.
Dans le cas d'un effort supérieur à ladite valeur seuil, ladite barre 94 ( ou 91 ;92 ;93) s'écarte de cette position par une rotation autour du premier axe de pivot A5 en provoquant la déformation des moyens élastiques 74 (ou 71 ; 72; 73), notamment la compression des rondelles Belleville, à Γ encontre de la force de rappel et de manière à autoriser le pivotement de la rampe 54 (ou 51 ; 52 ; 53) autour de son axe de rotation A4 (ou Al ; A2; A3), et alors que le vérin hydraulique correspondant 84 (81 ; 82 ; 83) maintient fermement sa position.  In the case of a force greater than said threshold value, said bar 94 (or 91; 92; 93) deviates from this position by a rotation about the first pivot axis A5, causing the deformation of the elastic means 74 (or 71, 72, 73), in particular the compression of the Belleville washers, against the restoring force and so as to allow the pivoting of the ramp 54 (or 51; 52; 53) around its axis of rotation A4 (or Al; A2; A3), and while the corresponding hydraulic cylinder 84 (81; 82; 83) holds its position firmly.
Le vérin hydraulique 84 (81 ; 82 ; 83), de préférence à double effet, est un actionneur qui a pour fonction de permettre le réglage de la position d'utilisation et de maintenir cette position une fois réglée. Plusieurs positions d'utilisation sont donc possibles.  The hydraulic cylinder 84 (81; 82; 83), preferably double acting, is an actuator whose function is to allow the adjustment of the position of use and to maintain this position once set. Several positions of use are possible.
Modifier la position de la rampe, permet, par exemple, de faciliter le changement des cylindres de laminage lors de la maintenance, en écartant la ou les rampes du cylindre à changer, par exemple, ou encore peut permettre de faciliter l'insertion de l'extrémité de la bande entre les cylindres de travail.  Modifying the position of the ramp makes it possible, for example, to facilitate the change of the rolling rolls during maintenance, by removing the ramp (s) from the roll to be changed, for example, or may facilitate the insertion of the roll. end of the strip between the work rolls.
Ainsi, et selon un mode de réalisation, les rampes 51, 52 (ou 53, 54) de ladite au moins une paire forment, dans l'une au moins de leur(s) position(s) d'utilisation deux éléments de guidage, supérieur et inférieur, facilitant l'insertion de la bande entre lesdits cylindres de travail. Lesdites rampes 51,52 , 53,54 sont disposées dans un inter-espace délimité entre les cylindres de travail 3,4, inférieur et supérieur, les premiers cylindres intermédiaires 31, 32, 41, 42, inférieurs et supérieurs, lesdits seconds cylindres intermédiaires 33, 34, 35 ; 43, 44, 45, inférieures et supérieurs, et les ensembles de galets d'appui, inférieurs et supérieurs. Thus, and according to one embodiment, the ramps 51, 52 (or 53, 54) of said at least one pair form, in at least one of their position (s) of use, two guide elements. , upper and lower, facilitating the insertion of the band between said working rolls. Said ramps 51, 52, 53, 54 are disposed in an inter-space delimited between the working rolls 3,4, lower and upper, the first intermediate rolls 31, 32, 41, 42, lower and upper, said second intermediate rolls 33, 34, 35; 43, 44, 45, lower and upper, and sets of support rollers, lower and upper.
De préférence, selon le mode de réalisation illustré non limitativement à la figure 2, lesdites liaisons mécaniques, le cas échéant leurs vérins hydrauliques 81, 82, 83, 84 et flexibles associés aux vérins, sont disposés dans cet inter-espace, ou latéralement à ce dernier, et de telle façon à créer un dégagement latéral autorisant le retrait de l'ensemble des cylindres 31, 32, ,33, 34, 35, 41, 42, 43, 44, 45 par coulissement suivant leur axe, ainsi que le retrait des galets des différents ensembles A à H, par coulissement suivant leur axe de rotation, sans démontage desdites liaisons mécaniques, et le cas échéant, sans démontage des vérins 81,82, 83, 84 et flexibles associés aux vérins.  Preferably, according to the embodiment illustrated in non-limiting manner in FIG. 2, said mechanical connections, if any, their hydraulic cylinders 81, 82, 83, 84 and flexible associated with the jacks, are arranged in this inter-space, or laterally to the latter, and so as to create a lateral clearance allowing the withdrawal of all the cylinders 31, 32, 33, 34, 35, 41, 42, 43, 44, 45 by sliding along their axis, and the removal of the rollers of the different sets A to H, by sliding along their axis of rotation, without disassembly of said mechanical connections, and if necessary, without disassembly of the cylinders 81,82, 83, 84 and flexible associated with the cylinders.
Il est ainsi possible de changer la totalité des cylindres de laminage et des galets des différents ensembles, y compris les galets des ensembles de galets A, D E et H, sans démontage des liaisons mécaniques, et en particulier sans démontage des vérins et flexibles associés aux vérins, contrairement à l'état de la technique illustré à la figure 1.  It is thus possible to change the totality of the rolling rolls and rollers of the various assemblies, including the rollers of the sets of rollers A, DE and H, without dismantling the mechanical connections, and in particular without dismantling the jacks and hoses associated with the cylinders, contrary to the state of the art illustrated in Figure 1.
A cet effet, et tels qu'illustrés non limitativement aux figures, les vérins 81,82 (ou 83, 84) associés aux rampes 51 ,52 (ou 53,54) d'une même paire peuvent être positionnés, en juxtaposition, sensiblement l'un derrière l'autre suivant la direction des cylindres de laminage, afin de limiter leur encombrement.  For this purpose, and as illustrated without limitation to the figures, the cylinders 81, 82 (or 83, 84) associated with the ramps 51, 52 (or 53, 54) of one and the same pair can be positioned, in juxtaposition, substantially one behind the other in the direction of the rolling rolls, to limit their size.
Naturellement d'autres modes de réalisation, auraient pu être envisagés par l'homme du métier sans pour autant sortir du cadre de l'invention tel que défini par les revendications ci-après. Naturally other embodiments could have been envisaged by those skilled in the art without departing from the scope of the invention as defined by the claims below.
NOMENCLATURE NOMENCLATURE
Invention (Figures 2 à 5) :  Invention (Figures 2 to 5):
I . Laminoir, I. Rolling mill,
2. Cage, 2. Cage,
3. Cylindre de travail supérieur,  3. Upper work roll,
4. Cylindre de travail inférieur,  4. Lower working cylinder,
9. Tige de vérin, 9. Jack rod,
10. Corps de vérin, 10. Cylinder body,
I I . Support,  I I. Support,
31,32. Premiers cylindres intermédiaires (supérieurs), 31.32. First intermediate cylinders (upper),
33, 34, 35. Seconds cylindres intermédiaires (supérieurs), 33, 34, 35. Second intermediate cylinders (upper),
41, 42. Premiers cylindres intermédiaires (inférieurs), 41, 42. First intermediate cylinders (lower),
43, 44, 45. Seconds cylindres intermédiaires (inférieurs), 43, 44, 45. Second intermediate cylinders (lower),
51, 52, 53, 54. Rampes, respectivement inférieure gauche, supérieure gauche, supérieure droite et inférieure droite, 51, 52, 53, 54. Ramps, respectively lower left, upper left, upper right and lower right,
71, 72, 73, 74. Moyens élastiques associés respectivement auxdites rampes inférieure gauche, supérieure gauche, supérieure droite et inférieure droite,  71, 72, 73, 74. Elastic means respectively associated with said lower left, upper left, upper right and lower right ramps,
60. Arbre de rotation, 60. Rotating shaft
81, 82, 83, 84. Vérins hydrauliques associés respectivement auxdites rampes inférieure gauche, supérieure gauche, supérieure droite et inférieure droite,  81, 82, 83, 84. Hydraulic cylinders respectively associated with said lower left, upper left, upper right and lower right ramps,
91, 92, 93, 94 Barres des liaisons mécaniques associées respectivement auxdites rampes inférieure gauche, supérieure gauche, supérieure droite et inférieure droite.  91, 92, 93, 94 Bars of the mechanical connections respectively associated with said lower left, upper left, upper right and lower right ramps.
A, B, C, D. Ensembles de galets en appui sur les seconds cylindres intermédiaires (supérieurs), E, F, G, H. Ensembles de galets en appui sur les seconds cylindres intermédiaires (inférieurs), A, B, C, D. Sets of rollers resting on the second intermediate cylinders (upper), E, F, G, H. Sets of rollers resting on the second intermediate (lower) rolls,
Al, A2, A3, A4. Axes de rotations des liaisons pivot associées respectivement auxdites rampes inférieure gauche, supérieure gauche, supérieure droite et inférieure droite, Al, A2, A3, A4. Rotation axes of the pivot links respectively associated with said lower left, upper left, upper right and lower right ramps,
A5. Axe de pivot. AT 5. Pivot pin.
Etat de la technique (Figure 1) : State of the art (Figure 1):
1 ' . Laminoir, 1 '. Rolling mill,
2'. Cage, 2 '. Cage,
3 ' . Cylindre de travail supérieur,  3 '. Upper working cylinder,
4'. Cylindre de travail inférieur, 4 '. Lower working cylinder,
9'. Tige de vérin, 9 '. Jack rod,
10'. Corps de vérin, 10 '. Cylinder body,
31,32. Premiers cylindres intermédiaires (supérieurs), 31.32. First intermediate cylinders (upper),
33, 34, 35. Seconds cylindres intermédiaires (supérieurs), 33, 34, 35. Second intermediate cylinders (upper),
41 ', 42'. Premiers cylindres intermédiaires (inférieurs), 41 ', 42'. First intermediate cylinders (lower),
43', 44', 45'. Seconds cylindres intermédiaires (inférieurs), 5 , 52', 53', 54'. Rampes, respectivement inférieure gauche, supérieure gauche, supérieure droite et inférieure droite, 43 ', 44', 45 '. Second intermediate cylinders (lower), 5, 52 ', 53', 54 '. Ramps, respectively lower left, upper left, upper right and lower right,
60'. Arbre de rotation (rampe), 60. Rotating shaft (ramp),
61 '. Palier, 61 '. Bearing,
81 ', 82', 83', 84'. Vérins hydrauliques associés respectivement auxdites rampes inférieure gauche, supérieure gauche, supérieure droite et inférieure droite.  81 ', 82', 83 ', 84'. Hydraulic cylinders respectively associated with said lower left, upper left, upper right and lower right ramps.

Claims

REVENDICATIONS
1. Laminoir (1) comprenant une cage (2), au moins un paire de cylindres de travail (3,4) aptes à définir l'entrefer de la bande à laminer, ainsi qu'au moins une rampe (51, 52, 53, 54) pour l'aspersion d'un fluide lubrifiant et/ou réfrigérant, disposée à proximité du plan de la bande à laminer, caractérisé en ce que ladite rampe (51 ; 52 ; 53 ; 54) est solidarisée à ladite cage par l'intermédiaire d'une liaison mécanique, articulée, ladite liaison mécanique comprenant des moyens élastiques (71 ; 72; 73; 74) contraignant ladite rampe (51 ; 52 ; 53 ; 54) vers au moins une position d'utilisation, en direction du plan de la bande, et autorisant, dans le cas d'un effort sur ladite rampe tendant à écarter la rampe, supérieur à une valeur seuil, la déformation des moyens élastiques (71 ; 72; 73; 74) à l'encontre de leur force de rappel, et ainsi l'escamotage de la rampe vers une position écartée de ladite au moins position d'utilisation. 1. Rolling mill (1) comprising a cage (2), at least one pair of work rolls (3, 4) capable of defining the gap of the strip to be rolled, and at least one ramp (51, 52, 53, 54) for the spraying of a lubricant and / or refrigerant fluid, disposed near the plane of the strip to be rolled, characterized in that said ramp (51; 52; 53; 54) is secured to said cage by via an articulated mechanical connection, said mechanical linkage comprising elastic means (71; 72; 73; 74) constraining said ramp (51; 52; 53; 54) towards at least one position of use, in the direction of the plane of the strip, and allowing, in the case of a force on said ramp tending to move the ramp, greater than a threshold value, the deformation of the elastic means (71; 72; 73; 74) against their return force, and thus the retraction of the ramp to a position spaced from said at least position of use.
2. Laminoir selon la revendication 1 , dans lequel ladite rampe (51 ; 52 ; 53 ; 54) est articulée à ladite cage (2) suivant une liaison pivot de ladite liaison mécanique, d'axe de rotation (Al ; A2; A3; A4) parallèle au plan de la bande à laminer et perpendiculaire à la direction de défilement de la bande, les moyens élastiques (71; 72; 73; 74) étant disposés entre la rampe (51 ; 52 ; 53 ; 54) et la cage (2), exerçant leur force de rappel pour provoquer la rotation de la rampe (51 ; 52 ; 53 ; 54) autour de l'axe de rotation (Al ; A2; A3; A4) de la liaison pivot, en direction de la bande, l'escamotage de la rampe de ladite au moins une position d'utilisation vers ladite position écartée étant obtenu par une rotation contraire autour de l'axe de rotation (Al; A2; A3; A4) de la liaison pivot. 2. Rolling mill according to claim 1, wherein said ramp (51; 52; 53; 54) is articulated to said cage (2) in a pivot connection of said mechanical connection, axis of rotation (A1; A2; A3; A4) parallel to the plane of the strip to be rolled and perpendicular to the running direction of the strip, the elastic means (71; 72; 73; 74) being arranged between the ramp (51; 52; 53; 54) and the cage (2), exerting their restoring force to cause rotation of the ramp (51; 52; 53; 54) about the axis of rotation (A1; A2; A3; A4) of the pivot connection towards the strip, the retraction of the ramp of said at least one position of use to said spaced position being obtained by an opposite rotation about the axis of rotation (A1; A2; A3; A4) of the pivot connection.
3. Laminoir selon la revendication 1 ou 2, dans lequel les moyens élastiques (71; 72; 73; 74) travaillent en compression pour rappeler ladite rampe de la position écartée vers ladite au moins une position d'utilisation. A rolling mill according to claim 1 or 2, wherein the elastic means (71; 72; 73; 74) work in compression to bias said ramp from the spread position to said at least one use position.
4. Laminoir selon la revendication 1 ou 2, dans lequel les moyens élastiques travaillent en extension pour rappeler ladite rampe de la position écartée vers la position d'utilisation. 4. Rolling mill according to claim 1 or 2, wherein the elastic means work in extension to return said ramp from the spread position to the position of use.
5. Laminoir selon la revendication 2 seule ou en combinaison avec la revendication 3 ou 4, dans lequel ladite liaison mécanique comprend, outre lesdits moyens élastiques (71; 72; 73; 74), et la liaison pivot, un vérin hydraulique (81 ; 82 ; 83 ; 84) disposé en série desdits moyens élastiques (71 ; 72; 73; 74) entre la cage (2) et la rampe (51 ; 52 ; 53 ; 54) et permettant de modifier la position de la rampe (51 ; 52 ; 53 ; 54) par rotation de la rampe autour de l'axe de rotation (Al; A2; A3; A4) de la liaison pivot. A rolling mill according to claim 2 alone or in combination with claim 3 or 4, wherein said mechanical connection comprises, in addition to said resilient means (71; 72; 73; 74), and the pivot connection, a hydraulic cylinder (81; 82; 83; 84) arranged in series of said elastic means (71; 72; 73; 74) between the cage (2) and the ramp (51; 52; 53; 54) and making it possible to modify the position of the ramp (51; 52, 53, 54) by rotation of the ramp about the axis of rotation (A1; A2; A3; A4) of the pivot connection.
6. Laminoir selon la revendication 5, dans lequel la tige (9) et le corps (10) du vérin hydraulique (81 ; 82 ; 83 ; 84) sont articulés respectivement, d'une part, à la rampe (51 ; 52 ; 53 ; 54) et, d'autre part, à une barre (91 ;92 ;93 ;94) dont l'une des extrémités est articulée suivant un premier axe de pivot (A5) à un support (11) rigidement solidaire de la cage (2), l'autre extrémité de la barre étant articulée (91 ;92 ;93 ;94) au corps (10) du vérin, suivant un second axe de pivot (A6), lesdits moyens élastiques (71 ; 72; 73; 74), contraignant ladite barre (91 ;92 ;93 ;94) vers une position en butée contre le support (11) dans ladite au moins une position d'utilisation, et dans lequel, dans le cas d'un effort supérieur à ladite valeur seuil, ladite barre (91 ;92 ;93 ;94) s'écarte de cette position par une rotation autour du premier axe de pivot (A5) en provoquant la déformation des moyens élastiques (71 ; 72; 73; 74), à l'encontre de la force de rappel et de manière à autoriser le pivotement de la rampe (51 ; 52 ; 53 ; 54) autour de l'axe de rotation (Al ; A2; A3; A4) de ladite liaison pivot. 6. Rolling mill according to claim 5, wherein the rod (9) and the body (10) of the hydraulic cylinder (81; 82; 83; 84) are hinged respectively, on the one hand, to the ramp (51; 52; 53; 54) and, on the other hand, to a bar (91; 92; 93; 94) whose one end is articulated along a first pivot axis (A5) to a support (11) rigidly secured to the cage (2), the other end of the bar being articulated (91; 92; 93; 94) to the body (10) of the cylinder, along a second pivot axis (A6), said elastic means (71; 72; 73 74), constraining said bar (91; 92; 93; 94) to a position abutting against the support (11) in said at least one position of use, and wherein, in the case of a force greater than said threshold value, said bar (91; 92; 93; 94) deviates from this position by a rotation about the first pivot axis (A5) causing deformation of the elastic means (71; 72; 73; 74); against the restoring force and m allowing the pivoting of the ramp (51; 52; 53; 54) about the axis of rotation (A1; A2; A3; A4) of said pivot connection.
7. Laminoir selon l'une des revendications 1 à 6, dans lequel les moyens élastiques (71 ; 72; 73; 74), comprennent un ou plusieurs ressorts métalliques, tel qu'un ressort hélicoïdal en extension ou en compression, ou encore un ressort résultant d'un empilement de rondelles Belleville. 7. Rolling mill according to one of claims 1 to 6, wherein the resilient means (71; 72; 73; 74) comprise one or more metal springs, such as a coil spring extension or compression, or a spring resulting from a stack of Belleville washers.
8. Laminoir selon l'une des revendications 1 à 6 dans lequel les moyens élastiques comprennent un ressort pneumatique. 8. Rolling mill according to one of claims 1 to 6 wherein the resilient means comprise a pneumatic spring.
9. Laminoir selon l'une des revendications 1 à 8, comprenant, pour le soutien de chaque cylindre de travail (3 ;4), inférieur ou supérieur : - un jeu de premiers cylindres intermédiaires (31 , 32; 41, 42) chacun en appui sur ledit cylindre de travail ( 3 ;4), 9. Rolling mill according to one of claims 1 to 8, comprising, for the support of each work roll (3; 4), lower or upper: a set of intermediate first cylinders (31, 32; 41, 42) each resting on said working cylinder (3; 4),
- un jeu de seconds cylindres intermédiaires (33, 34, 35 ; 43, 44, 45) en appui sur les premiers cylindres intermédiaires,  a set of intermediate second cylinders (33, 34, 35, 43, 44, 45) resting on the first intermediate cylinders,
- plusieurs ensembles de galets (A,B,C,D,E,F,G,H), en appui sur les seconds cylindres intermédiaires (33, 34, 35 ; 43, 44, 45). - Several sets of rollers (A, B, C, D, E, F, G, H) resting on the second intermediate rolls (33, 34, 35, 43, 44, 45).
10. Laminoir selon l'une des revendications 1 à 9 comprenant au moins une paire de rampes, les deux rampes (51,52 ; 53,54) de chaque paire étant disposées respectivement en dessous et au-dessus du plan de la bande à laminer, chacune des rampes étant solidarisée à ladite cage par l'intermédiaire d'une dite liaison mécanique, articulée, indépendante, comprenant les moyens élastiques (71; 72; 73; 74). 10. Rolling mill according to one of claims 1 to 9 comprising at least one pair of ramps, the two ramps (51,52; 53,54) of each pair being disposed respectively below and above the plane of the strip. rolling, each of the ramps being secured to said cage by means of a said articulated, independent, mechanical connection, comprising the elastic means (71; 72; 73; 74).
11. Laminoir selon la revendication 10 comprenant deux paires de rampes (51,52, 53,54), les deux paires de rampes étant disposées de part et d'autre du plan de laminage passant par les axes des deux cylindres de travail (3,4). 11. Rolling mill according to claim 10 comprising two pairs of ramps (51,52, 53,54), the two pairs of ramps being disposed on either side of the rolling plane passing through the axes of the two work rolls (3). 4).
12. Laminoir selon la revendication 9, pris en combinaison avec la revendication 10 ou 11, dans lequel lesdites rampes (51,52 , 53,54) sont disposées dans un inter-espace délimité entre les cylindres de travail (3,4), inférieur et supérieur, les premiers cylindres intermédiaires (31, 32, 41, 42), inférieurs et supérieurs, lesdits seconds cylindres intermédiaires (33, 34, 35 ; 43, 44, 45), inférieurs et supérieurs, et les galets d'appui, inférieurs et supérieurs, lesdites liaisons mécaniques, le cas échéant leur vérin hydraulique (81, 82, 8 , 84) et flexibles associés aux vérins, étant disposés dans cet inter-espace, ou latéralement à ce dernier, et de telle façon à créer un dégagement latéral autorisant le retrait de l'ensemble des cylindres (31, 32, 33, 34, 35, 41, 42, 43, 44, 45) par coulissement suivant leur axe, ainsi que le retrait des galets des différents ensembles (A à H), par coulissement suivant leur axe de rotation, sans démontage desdites liaisons mécaniques, le cas échéant, sans démontage des vérins et flexibles associés aux vérins. 12. Rolling mill according to claim 9, taken in combination with claim 10 or 11, wherein said ramps (51,52, 53,54) are arranged in an inter-space defined between the working rolls (3,4), lower and upper, the first intermediate cylinders (31, 32, 41, 42), lower and upper, said second intermediate cylinders (33, 34, 35, 43, 44, 45), upper and lower, and the support rollers , lower and upper, said mechanical connections, where appropriate their hydraulic cylinder (81, 82, 8, 84) and flexible associated with the cylinders, being arranged in this inter-space, or laterally to the latter, and in such a way as to create a lateral clearance allowing the withdrawal of all the cylinders (31, 32, 33, 34, 35, 41, 42, 43, 44, 45) by sliding along their axis, as well as the removal of the rollers of the different sets (A to H), by sliding along their axis of rotation, without disassembly of said links mechanical sounds, if any, without dismantling the cylinders and hoses associated with the cylinders.
EP15745527.0A 2014-07-01 2015-06-26 Rolling mill such as, for example, a cold rolling mill Active EP3164231B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1456289A FR3023192B1 (en) 2014-07-01 2014-07-01 ROLLING MILL FOR EXAMPLE COLD ROLLING MILL
PCT/FR2015/051738 WO2016001541A1 (en) 2014-07-01 2015-06-26 Rolling mill such as, for example, a cold rolling mill

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EP3164231B1 EP3164231B1 (en) 2018-04-18

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US (1) US10518308B2 (en)
EP (1) EP3164231B1 (en)
CN (1) CN106660086B (en)
ES (1) ES2675921T3 (en)
FR (1) FR3023192B1 (en)
WO (1) WO2016001541A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3056422B1 (en) * 2016-09-27 2019-06-28 Fives Dms SPRAYING RAMP OF A LUBRICATING AND / OR REFRIGERATING FLUID
FR3077015B1 (en) * 2018-01-25 2020-01-24 Fives Dms ROLLER WITH COOLING OR LUBRICATING DEVICE
CN113042631A (en) * 2019-12-26 2021-06-29 上海赛科利汽车模具技术应用有限公司 Aluminothermic forming device and operation method thereof
FR3114036B1 (en) * 2020-09-16 2023-01-20 Ets Duprez Spray bar, and cold rolling mill comprising a spray system comprising such a spray bar
FR3144765A1 (en) * 2023-01-10 2024-07-12 Fives Dms Rolling mill equipped with a device for adjusting the inclination of the spray ramp.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU29117A1 (en) 1948-06-10
US3998084A (en) * 1974-11-01 1976-12-21 Marotta Scientific Controls, Inc. Cooling spray system for rolling mill
SU576131A1 (en) * 1976-05-19 1977-10-15 Предприятие П/Я А-7697 Stock-guiding device for multi-roll mill
JPS6038449B2 (en) * 1979-07-27 1985-08-31 株式会社日立製作所 steel plate cooling device
JP3750346B2 (en) * 1998-03-31 2006-03-01 Ｊｆｅスチール株式会社 Work roll cooling water drainer
EP1188494B1 (en) * 1999-03-31 2007-06-27 Hitachi, Ltd. Strip wiper device and strip wiping method
CN202180090U (en) * 2011-04-25 2012-04-04 宝山钢铁股份有限公司 flexible rack sweeping device
EP2676744A1 (en) * 2012-06-22 2013-12-25 Siemens VAI Metals Technologies GmbH Device for sprinkling a rolling plant and method for extracting/inserting said system from/in said rolling cage

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CN106660086A (en) 2017-05-10
US20170151594A1 (en) 2017-06-01
US10518308B2 (en) 2019-12-31
FR3023192B1 (en) 2016-08-05
CN106660086B (en) 2019-11-15
ES2675921T3 (en) 2018-07-13
WO2016001541A1 (en) 2016-01-07
EP3164231B1 (en) 2018-04-18
FR3023192A1 (en) 2016-01-08

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