EP0738546B1 - Laminoir à grande ouverture - Google Patents
Laminoir à grande ouverture Download PDFInfo
- Publication number
- EP0738546B1 EP0738546B1 EP19960400848 EP96400848A EP0738546B1 EP 0738546 B1 EP0738546 B1 EP 0738546B1 EP 19960400848 EP19960400848 EP 19960400848 EP 96400848 A EP96400848 A EP 96400848A EP 0738546 B1 EP0738546 B1 EP 0738546B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- working
- chock
- chocks
- cylinders
- 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.)
- Expired - Lifetime
Links
- 238000005096 rolling process Methods 0.000 title description 22
- 238000005452 bending Methods 0.000 claims description 22
- 230000000284 resting effect Effects 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 3
- 239000000543 intermediate Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
- B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
- B21B31/106—Vertical displacement of rolls or roll chocks during horizontal roll changing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B1/026—Rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B2003/001—Aluminium or its alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
Definitions
- the subject of the invention is a rolling mill in which the opening of the working cylinders can be adjusted to a large amplitude which can, for example, exceed 300mm for laminating product with very thick varied and applies in particular to roughing cages and to the rolling of aluminum or other metals not ferrous.
- a rolling mill generally includes a cage fixed having two uprights spread between which are at least two working cylinders with axes substantially parallel and placed substantially in a clamping plane transverse to the direction of travel of the product and which generally constitutes a median plane from the cage.
- the so-called quarto rolling mills include four superimposed cylinders, respectively two working rolls extending on either side of a passage plan of the product to be laminated and associated, respectively, with two support cylinders.
- intermediate cylinders are interposed between each working cylinder and the corresponding support cylinder.
- each working cylinder may be associated with several support cylinders arranged symmetrically on either side of the clamping plane.
- Each cylinder is rotatably mounted around its axis, on bearings carried by two support chocks strung respectively in two windows arranged in the two amounts of the cage.
- Clamping means such as screws or jacks, bearing on the cage, exert a vertical force of tightening of cylinders for rolling the product passing between the working cylinders. That is why the chocks of each cylinder are mounted sliding, parallel to the clamping plane, each between two flat guide faces provided respectively on either side of said clamping plane on both sides of the corresponding window of the cage. As the support cylinders have a large diameter, the corresponding guide faces are generally provided directly on the corresponding amount of the cage. On the other hand, the working cylinders having a smaller diameter, their chocks are smaller and the corresponding guide faces, which are more tightened, are generally arranged on two blocks side fixed on both sides of the window and which extend inwardly projecting therefrom.
- cylinders are used for this purpose. hydraulics placed on either side of each chock and leaning in one direction on a lateral part forming a support ear for the chock and in the other, on the guide block resting on the fixed cage and in which are the camber cylinders with their hydraulic circuit, the guide blocks being called, for this reason, hydraulic blocks.
- the clamping cylinders maintain working cylinder spacing corresponding to the thickness to be given to the product and the bending cylinders which act on the positions respective chocks are used simply to correct flatness defects.
- the cylinders placed on the blocks hydraulics determine a so-called cambering effect positive, corresponding to a spacing of the chocks of the two working cylinders and other cylinders, taking support on the fixed cage or on the chocks of the cylinders of support determine a so-called negative cambering effect of working cylinders, corresponding to an approximation of their chocks.
- Such a possibility of axial sliding is also useful for adjusting the distribution of effort rolling to the width of the product by axial displacement relative working cylinders or cylinders intermediates, in the case of a sexto rolling mill such as described, for example, by document EP-A-059.417, already cited.
- the camber cylinders housed in the fixed hydraulic blocks rest on parts intermediates mounted vertically and on which support the chocks, with a possibility of horizontal sliding to allow axial displacement of the cylinder.
- chocks must therefore be ensured, not only in the vertical direction, parallel to the plane of tightening, for adjusting the air gap, but also in the horizontal direction, parallel to the axes of the cylinders, to allow removal and placement, by axial sliding of the pair of working cylinders.
- the chocks of the two working cylinders must be kept between the guide faces provided on the two blocks hydraulic.
- the object of the invention is to solve these problems thanks to a new assembly of chocks which allows to guide them over a long race without complicating the arrangement of the cambering means and hydraulic circuits.
- the arrangement according to the invention makes it possible to limit parasitic friction and keep a simple window geometry with reduced width and, therefore, without weighing down the columns of the cage.
- the invention therefore generally applies to any rolling mill of known type including, inside of a cage having two uprights apart, at least two working cylinders with substantially parallel axes, defining an air gap for the product to be laminated along a substantially horizontal passage plane and rotatably mounted around their axis, each in two chocks strung in windows respectively corresponding in the two amounts of the cage, said chocks being slidably mounted each between two plane guide faces parallel to a clamping plane passing substantially through the axes of the working cylinders, and arranged on both sides of the corresponding window.
- Such a rolling mill is also associated with means for bending at least one of the cylinders of work including, for each chock, at least two hydraulic cylinders placed on either side and each other of the chock, each in a support piece attached to the corresponding side of the window and forming a hydraulic block, each hydraulic cylinder having a body formed in said support piece and a piston associated with a rod, slidably mounted in the body, parallel to the clamping plane and supported by a lateral support part of the chock.
- the support piece of at least one cylinder bending of at least one of the working cylinders includes a portion for holding the rod of said cylinder which engages in a corresponding recess provided on the side of the chock of said cylinder to a bottom forming the support part of the jack, and said side of the slab is limited, on either side of said recess, by two plane sliding faces capable of slide along two mating guide faces formed on the corresponding side of the window, on either side of said part holding part of support.
- each side of the chock is provided with a U-shaped sliding face open on the plane side passage of the product and comprising a central part spanning the width of the chock at the bottom of the recess, and two lateral branches between which engage the rod holding part of the cylinder.
- the level of one of the cylinders work is substantially constant
- the level of the other cylinder can vary for the adjustment of the air gap
- the rod of each adjustable cylinder camber cylinder is sliding mounted in the support piece on a height at least equal to the adjustment amplitude of the air gap and said support piece comprises a part sliding support of the cylinder rod, engaging, on the adjustment height, in a chock recess of the adjustable cylinder and a part forming the body of the cylinder, placed at the level of the chock of the fixed cylinder.
- each support piece of at least one bending cylinder advantageously comprises two parts extending respectively on either side of the plane of passage of the product, respectively a narrow part of sliding support of the rod or cylinders cambering, which engages in a recess of the chock corresponding to a first working cylinder and a large part in which the body of the bending cylinders and which is laterally limited by a sliding guide face of the chock second working cylinder, the latter being associated with camber cylinders housed in said wide part of the support piece.
- the two working cylinders are associated with cylinders positive camber determining the spacing of their chocks and arranged in pairs of two opposite cylinders, the inside of two support pieces placed respectively on either side of the clamping plane passing substantially through the axes of the cylinders.
- each support piece can be provided with at least one common bore forming the body two opposite cylinders whose rods are supported respectively, in opposite directions, on the chocks of the two working cylinders.
- a single room can be placed between the two pistons of the two opposite cylinders and supplied with oil for the simultaneous actuation of said cylinders.
- the bore common to the two cylinders can also be separated by a partition into two supplied chambers separately for the individual actuation of each of the two opposite cylinders.
- the opening of working cylinders can be adjusted to a large race for the passage of very thick products different, the holding part of the support piece extending over a height at least equal to the stroke maximum opening to ensure sliding support in any position the working cylinders of the bending cylinders over the entire opening stroke.
- the working cylinder associated with the part of holding the support piece can advantageously be away from the product passage plane to a position maximum lift for which the recesses side of the chocks are entirely clear of corresponding holding parts of the two pieces of support, said working cylinder being removable from the cage by displacement parallel to its axis in said maximum lifting position.
- the chocks from the working cylinder can rest on the chocks of the lower working cylinder, for simultaneous removal of the two cylinders by axial sliding, for example, by means of two support pads placed on the side and on the other side of the clamping plane and projecting towards the bottom in the space between the chocks, each chock of the lower working cylinder being provided with two conjugate studs extending upwards.
- the studs upper and lower are also offset axially relative to each other by a certain distance, in the working position of the cylinders and everyone commits, in this position, to accommodation formed on the opposite side of the other chock to allow the approximation of chocks during adjustment of the opening stroke while in the position maximum opening, said pads are likely to lean on each other after axial shift of one of the cylinders relative to the other by the distance between the studs, to allow simultaneous removal of two cylinders resting on each other.
- Figure 1 which is a partial side view, shows the cylinder arrangement of a rolling mill type quarto comprising, inside a cage 1, two working rolls 2, 2 'placed on either side of a horizontal plane P1 of passage of a product to be laminated A and taking support respectively, on the side opposite the product, each on a support cylinder 3, 3 '.
- each cylinder is provided, at its ends, of journals 21, 31 mounted to rotate, of as shown in Figures 4 and 5, in bearings 22 housed in support chocks, respectively 4, 4 'of the working cylinders 2, 2' and 5, 5 'of the support cylinders 3, 3'.
- These are mounted sliding inside windows 10 provided respectively in the two uprights 1 of the cage.
- Cylinders 12 mechanical or hydraulic, are mounted at the top of the two uprights 1 of the cage and bear, respectively, on the chocks 5 of the upper support cylinder 3, to apply a clamping force which determines the rolling of the product between the working rolls 2, 2 ', the chocks 5' of the lower support cylinder 3 bearing, in the direction opposite, on fixed shims of adjustable height, not shown in Figure 1.
- the lower working cylinder 2 ' has a substantially constant level corresponding to the plane of passage of product A, the jacks 12 acting in the two directions on the upper support chocks 5 for adjust the width of the air gap between the cylinders work 2, 2 'depending on the thickness of product A and the desired thickness reduction.
- chocks 4, 4 ′ of the two cylinders are associated with positive camber cylinders 61 placed in hydraulic blocks 6 and susceptible to determine a relative spacing of each pair chocks 4, 4 'for bending the cylinders of work 2, 2 '.
- each hydraulic block is consisting of a support piece 6 fixed on the two sides 11, 11 'of window 10 and in which are formed bores 60 with vertical axis constituting the body of positive cambering cylinders 61.
- the part also includes supply and return circuits oil, not shown in the figure.
- the jacks 6 are at single effect, the negative cambering being ensured, so also known, by cylinders 52, 52 'housed in bores 53 arranged in the support chocks 5, 5 'and bearing respectively on chocks 4, 4 'of working cylinders in the negative direction of approximation of said chocks.
- the lower working cylinder 2 ' whose level does not vary, generally, only slightly, rose from the usual way, its 4 'chocks having faces side 44 'which can slide along faces of guide 63 provided on the lower part of the parts support 6, 6 'and parallel to the clamping plane P2 passing through the axes of the cylinders.
- each lower chock 4 ' is provided with parts widened 45 'forming support ears which extend below the hydraulic blocks 6 and 6 'and on which are supported, in the direction of the spacing of the plane P1, cylinders 62 for positive cambering of the lower cylinder 2 ', respectively housed at the bottom of each bore 60, opposite cylinders 61.
- the camber cylinders upper 61 have a very large stroke allowing adapt to a large air gap width, so that the thickness of product A can vary over a large amplitude.
- the bore 60 b which constitutes the body of the jack 61 upper camber extends over a longer length large than the top 6b so that in retracted position, the piston 61a of the cylinder 61 is placed at the below the P1 plane, that is to say inside the lower part 6a of the hydraulic block 6, for example substantially at the axis of the working cylinder lower 2 '.
- the rod 61b of the actuator upper arch 61 can have a great length, much greater than the adjustment range of the air gap, and it is perfectly guided at its bottom by piston 61a and at its upper part by a seal annular 64b which seals the end bore 60b.
- the guide faces 63 of the 4 'lower working chocks are provided, classic way on the lower parts 6a of the blocks hydraulic 6.
- the chocks 4 of the cylinder working top 2 are slidably mounted along guide faces 13, 13 ′ formed directly on the lateral sides 11, 11 'of the corresponding window 10 of the amount 1 of the cage.
- the upper part 6b of the piece of support 6 used to hold the rod 61b of each cylinder 61 can engage in a recess 41 formed on each lateral side of the chock 4 and extending up to a bottom 42 placed at a certain distance from the face upper 43 of the chock.
- each top chock 4 which slides along the guide faces 13, 13 ′ of the window have each an inverted U shape, open on the plane side passage P1 and comprising a central part 44a (figure 3) extending over the entire width of the chock above from the bottom 42 of the recess 41, and two lateral branches 44b limiting the two sides of the recess 41 and between which engage the upper part 6b of the part support 6 used to hold the rod of each cylinder 61.
- the upper part 6b of the same part 6 should only show resistance simply sufficient for sliding support of the rods cylinders 61. Consequently, the width a of the part upper support 6b, depends only on the number and the section of the camber cylinders and the thickness of metal required and can therefore be substantially less than the width b of the chock 4 so that the two branches 44b of the sliding face 44 cover sufficient area to guide pestle it without undue hardship.
- the upper part 45 of the chore 4 passing to the above the bottom 42 of the recess 41 therefore constitutes a support lug for positive camber cylinders 61 on which can lean in the opposite direction, the negative cambering cylinders 52 housed in the chock upper support 5.
- the width of the recess 41 is a little greater than the width a of the upper part 6b of the hydraulic block 6, so that leave a slight clearance between the side faces of it and the internal faces of the two branches 44b.
- this nesting can usefully be used to keep the working cylinder 2 centered in the clamping plane P2.
- the provision which has just been described does not provide any discomfort when removing working cylinders for maintenance or replacement.
- the chocks 4 'of the working cylinder 2' are, in service, supported by 52 'camber cylinders negative.
- the rolling mill comprises means 7 for maintenance of the relative spacing of the chocks of the working rolls 2, 2 'in a position of maximum lifting of the upper cylinder 2 for which the chocks 4 of it pass over the parts holding the hydraulic blocks 6b 6.
- each top working chock 4 of the movable cylinder 2 is provided with two pads 70, 70 'placed on either side of the clamping plane P2 and which extend down into the space between the two cylinders, over a distance substantially equal to the half the maximum spacing.
- Matching studs 71, 71 'placed on the lower working chocks 4 ' extend in the opposite direction, over the distance complementary.
- the upper studs 70 and lower studs 71 are offset axially and can penetrate into recesses correspondents 46 ', 46 arranged respectively, in the opposite chocks 4 ', 4. In this way, as shown in the Figure 1, the pads 70, 71 do not interfere, in service, the adjustment of the air gap and the camber of the cylinders in one way or the other.
- Figure 2 shows the cylinders in withdrawal position, the camber cylinders upper tucked in and upper chocks 4 bearing on the lower chocks 4 'by through the superimposed studs 70, 71.
- the lower stud 70 is provided with a stud 72 which enters a corresponding blind hole in the end of the upper stud 70. This is why the cylinders 61 must lift the working cylinder higher 2 to a level slightly higher than the one indicated in figure 2 and for which it is possible to move the lower cylinder axially 2 'by a distance c corresponding to the offset of the studs 70, 71.
- each lower stud 71 is exactly in the extension of a corresponding upper stud 70.
- the chock upper 4 slightly lower the chock upper 4 so that the upper studs 70 come rest on the lower studs 71.
- the upper camber cylinders 61 can then have returned and we are in the position shown in Figures 2 and 6.
- each chock 4 of the cylinders of upper work 2 is provided with two studs 70, 70 ' placed symmetrically on either side of the plane of P2 clamping and which come to bear on the studs corresponding 71, 71 'of the working chocks 4'.
- the upper working cylinder 2 thus rests on the lower working cylinder 2 'and can therefore be removed with it by axial displacement, the assembly resting on the rollers 14 which roll on the rails 15.
- the positive camber cylinders are operated in reverse from a single pressure chamber 65 placed between the two pistons 61a, 62a. It would however be possible to place in the bore 60 a partition allowing limit two chambers supplied under pressure different so as to adjust asymmetrically the bending of the two working cylinders 2, 2 '.
- the figures show an example of usual embodiment in which two jacks are used placed side by side for positive or negative bending but we could also use more cylinders by increasing the width a of the part of holding 6b or, on the contrary, a single cylinder centered in a median plan of the chock.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Description
Claims (12)
- Laminoir comprenant à l'intérieur d'une cage ayant deux montants écartés (1), au moins deux cylindres de travail (2,2') à axes sensiblement parallèles, définissant un entrefer de passage du produit à laminer (A) suivant un plan de passage P1 sensiblement horizontal, et montés rotatifs autour de leur axe, chacun sur deux empoises (4, 4') enfilées respectivement dans des fenêtres correspondantes (10) des deux montants (1) de la cage, lesdites empoises (4, 4') étant montées coulissantes, parallèlement à un plan de serrage P2 passant sensiblement par les axes des cylindres de travail (2,2'), chacune entre deux faces de guidage planes ménagées respectivement, de part et d'autre dudit plan de serrage P2, sur les deux côtés (11, 11') de la fenêtre correspondante (10) de la cage (1), le laminoir étant associé à des moyens de cambrage d'au moins l'un des cylindres de travail, et comprenant pour chaque empoise (4,4'), au moins deux vérins hydrauliques (61, 61') placés respectivement de part et d'autre de l'empoise (4), chacun dans une pièce de support (6) fixée sur le côté correspondant (11, 11') de la fenêtre (10) et formant un bloc hydraulique, chaque vérin (61) ayant un corps (60) ménagé dans ladite pièce de support (6) et un piston (61a) avec une tige (61b), monté coulissant dans le corps (60) parallèlement au plan de serrage et agissant sur une partie latérale d'appui (45, 45') de l'empoise (4, 4'), caractérisé par le fait que de chaque côté du plan de serrage P2, la pièce de support (6) d'au moins un vérin de cambrage (61) d'au moins l'un des cylindres de travail (2) comporte une partie (6b) de maintien de la tige (61b) dudit vérin qui s'engage dans un évidement correspondant (41) ménagé sur le côté (44) de l'empoise (4) dudit cylindre (2) jusqu'à la partie d'appui (45) de celle-ci et que ledit côté (44) de l'empoise est limité, de part et d'autre dudit évidement (41), par deux faces de glissement planes (44b) susceptibles de coulisser le long de faces de guidage conjuguées (13) ménagées sur le côté correspondant de la fenêtre (10), de part et d'autre de ladite partie de maintien (6b) de la pièce de support (6).
- Laminoir selon la revendication 1, caractérisé en ce que chaque côté (44) de l'empoise (4) du cylindre de travail (2) associé aux vérins de cambrage (61) est muni, d'une face de glissement en forme de U ouvert du côté du plan de passage du produit et comprenant une partie centrale (44a) s'étendant sur la largeur de l'empoise (4) au niveau de la partie d'appui (45) et deux branches latérales (44b) limitant l'évidement (41) dans lequel s'engage la partie de maintien (6b) de la tige (61b) du vérin (61).
- Laminoir selon d'une des revendications 1 et 2, caractérisé en ce que, le laminoir comprenant un cylindre de travail fixe (2') de niveau sensiblement constant et un cylindre de travail réglable (2) dont le niveau peut varier sur une certaine hauteur de réglage de l'entrefer, le piston (61a) et la tige (61b) de chaque vérin (61) de cambrage du cylindre réglable (2) sont montés coulissants dans la pièce de support (6), sur une hauteur au moins égale à l'amplitude de réglage de l'entrefer et ladite pièce de support (6) comprend une partie (6b) de maintien coulissant de la tige du vérin, s'engageant sur la hauteur de réglage, dans un évidement (41) de l'empoise du cylindre réglable (2) et une partie (6a) formant le corps du vérin (61), placée au niveau de l'empoise (4') du cylindre fixe (2').
- Laminoir selon la revendication 3, caractérisé en ce que chaque pièce de support (6) d'au moins un vérin de cambrage (61) comprend deux parties s'étendant respectivement de part et d'autre du plan P1 de passage du produit (A), respectivement une partie étroite (6b) de maintien coulissant de la tige (61b) du ou des vérins de cambrage (61), qui s'engage dans un évidement (41) de l'empoise correspondante (4) d'un premier cylindre de travail (2) et une partie large (6b) dans laquelle est ménagé le corps du ou des vérins de cambrage (61) et qui est limitée latéralement par une face (63) de guidage coulissant de l'empoise correspondante (4') du second cylindre de travail (2'), ce dernier étant associé à des vérins de cambrage (62) logés dans ladite partie large (6b) de la pièce de support (6).
- Laminoir selon l'une des revendications précédentes, caractérisé en ce que les deux cylindres de travail (2, 2') sont associés à des vérins de cambrage positif déterminant l'écartement de leurs empoises (4, 4') et disposés par paires de deux vérins opposés (61, 62), à l'intérieur de deux pièces de support (6, 6') placées respectivement de part et d'autre du plan de serrage P2 passant sensiblement par les axes des cylindres.
- Laminoir selon la revendication 5, caractérisé par le fait que chaque pièce de support (6) est munie d'au moins un alésage commun (60) formant le corps de deux vérins opposés (61, 62) dont les tiges (61b, 62b) prennent appui respectivement, en des sens opposés, sur les empoises (4, 4') des deux cylindres de travail (2, 2').
- Laminoir selon la revendication 6, caractérisé en ce que chaque pièce de support (6) comporte une chambre unique (65) placée entre les deux pistons (61, 62) des deux vérins opposés et alimentée en huile pour l'actionnement simultané des dits vérins (61, 62).
- Laminoir selon la revendication 6, caractérisé en ce que chaque alésage commun (60) est séparé par une cloison en deux chambres alimentées séparément pour l'actionnement individuel de chacun des deux vérins opposés (61, 62).
- Laminoir selon l'une des revendications précédentes, dans lequel l'ouverture des cylindres de travail peut être réglée sur une grande course pour le passage de produits d'épaisseurs très différentes, caractérisé en ce que la partie de maintien (6b) de la pièce de support (6) s'étend sur une hauteur au moins égale à la course d'ouverture maximale pour assurer le maintien coulissant en toute position des cylindres de travail (2, 2') du ou des vérins de cambrage sur toute la course d'ouverture.
- Laminoir selon l'une des revendications précédentes, caractérisé en ce que le cylindre de travail (2) associé à la partie de maintien (6b) de la pièce de support (6) peut être écarté du plan de passage P1 du produit jusqu'à une position de soulèvement maximal pour laquelle les évidements latéraux (41) des empoises (4) sont entièrement dégagés des parties de maintien (6b) correspondantes des deux pièces de support (6, 6'), ledit cylindre de travail (2) pouvant être retiré de la cage (1) par déplacement parallèlement à son axe dans ladite position de soulèvement maximal.
- Laminoir selon la revendication 10, caractérisé par le fait qu'il comprend des moyens (7) d'appui des empoises (4) du cylindre de travail supérieur (2) sur les empoises (4') du cylindre de travail inférieur (2'), pour le retrait simultané des deux cylindres (2, 2') par coulissement axial.
- Laminoir selon la revendication 11, caractérisé en ce que chaque empoise du cylindre de travail supérieur (2) est munie de deux plots de soutien (70, 70') placés de part et d'autre du plan de serrage P2 et s'étendant en saillie vers le bas dans l'espace entre les empoises et que chaque empoise (4') du cylindre de travail inférieur (2') est munie de deux plots conjugués (71, 71') s'étendant vers le haut, lesdits plots supérieurs (70) et inférieurs (71) étant décalés axialement l'un par rapport à l'autre d'une certaine distance (c), dans la position de travail des cylindres et s'engageant chacun, dans cette position, dans un logement (46',46) ménagé sur la face opposée de l'autre empoise (4', 4) pour permettre le rapprochement des empoises lors du réglage de la course d'ouverture et que, dans la position d'ouverture maximale, lesdits plots sont susceptibles de prendre appui l'un sur l'autre après décalage axial de l'un des cylindres par rapport à l'autre de la distance (c) entre les plots (70, 71), pour permettre le retrait simultané des deux cylindres, reposant l'un sur l'autre.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9504665 | 1995-04-19 | ||
FR9504665A FR2733171B1 (fr) | 1995-04-19 | 1995-04-19 | Laminoir a grande ouverture |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0738546A1 EP0738546A1 (fr) | 1996-10-23 |
EP0738546B1 true EP0738546B1 (fr) | 1999-06-16 |
Family
ID=9478243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960400848 Expired - Lifetime EP0738546B1 (fr) | 1995-04-19 | 1996-04-19 | Laminoir à grande ouverture |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0738546B1 (fr) |
DE (1) | DE69602878T2 (fr) |
FR (1) | FR2733171B1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012049183A1 (fr) | 2010-10-12 | 2012-04-19 | Sms Siemag Ag | Cage de laminoir |
FR3048899B1 (fr) * | 2016-03-17 | 2019-05-31 | Fives Dms | Laminoir pour bande metallique |
CN116274350B (zh) * | 2022-12-09 | 2023-10-10 | 诸暨雅言科技有限公司 | 一种铜棒的辊轧成型设备及方法 |
CN117066329B (zh) * | 2023-10-17 | 2023-12-26 | 山东宏泰电器有限公司 | 冰柜门板加工用辊轧折边机 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3261730D1 (en) * | 1981-02-28 | 1985-02-14 | Schloemann Siemag Ag | Roll stand |
DE3627692A1 (de) * | 1986-08-14 | 1988-02-25 | Schloemann Siemag Ag | Biege- und ausbalanciervorrichtung fuer axial verschiebbare arbeitswalzen eines quartowalzgeruestes |
DE3815454A1 (de) * | 1988-05-06 | 1989-11-16 | Schloemann Siemag Ag | Biege- und ausbalanciervorrichtung fuer axial verschiebbare walzen eines walzgeruestes |
DE4314472A1 (de) * | 1993-05-03 | 1994-11-10 | Schloemann Siemag Ag | Biegeblock zum Biegen der Walzen von Mehrwalzen-Walzgerüsten |
-
1995
- 1995-04-19 FR FR9504665A patent/FR2733171B1/fr not_active Expired - Fee Related
-
1996
- 1996-04-19 EP EP19960400848 patent/EP0738546B1/fr not_active Expired - Lifetime
- 1996-04-19 DE DE1996602878 patent/DE69602878T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2733171A1 (fr) | 1996-10-25 |
DE69602878T2 (de) | 2000-01-27 |
FR2733171B1 (fr) | 1997-07-04 |
EP0738546A1 (fr) | 1996-10-23 |
DE69602878D1 (de) | 1999-07-22 |
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