EP0368686A1 - Automated rolling machine with interlocking rolls - Google Patents

Automated rolling machine with interlocking rolls Download PDF

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Publication number
EP0368686A1
EP0368686A1 EP89402452A EP89402452A EP0368686A1 EP 0368686 A1 EP0368686 A1 EP 0368686A1 EP 89402452 A EP89402452 A EP 89402452A EP 89402452 A EP89402452 A EP 89402452A EP 0368686 A1 EP0368686 A1 EP 0368686A1
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EP
European Patent Office
Prior art keywords
rollers
axes
crenellated
machine
machine according
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Granted
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EP89402452A
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German (de)
French (fr)
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EP0368686B1 (en
Inventor
Michel Gravier
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Jammes Industrie SA
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Jammes Industrie SA
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Priority to AT8989402452T priority Critical patent/ATE105518T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
    • B21D5/143—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers making use of a mandrel

Definitions

  • the present invention is in the field of working materials by deformation and it more particularly relates to improvements to machines for bending flat sheets to conform them into cylinders or cones; these machines are commonly called rollers.
  • rollers are known in which the bending of the sheet metal results from the passage of the latter between a so-called support roller and a train of crenellated rollers with axes parallel to the axis of the previous one and generally located at- above him; the cylindrical surfaces of the crenellated rollers intersect and the bending radius is defined by the more or less close position of the support roller of all the crenelated rollers.
  • the main problem posed by rolling machines is that of the bending of the rollers, and particularly of the support roller, the behavior of which is analyzed like that of a necessarily long and thin beam; one solution to this problem consisted in imposing a corresponding flexion on the opposing rollers, in this case the crenellated rollers. It has therefore been proposed as a means of this solution, but also for other reasons, the use of a pressure roller with a diameter comparable to that of the support roller and rollers exerting a differentiated pressure on the pressure roller can be bent and thanks to which still the crenellated rollers only transmit the pressure of the pressure roller without their bearings undergoing a considerable effort.
  • one of the aims of the present invention is to provide an automatic rolling machine, which can be associated with a welder working behind it and also working automatically; another object of the invention is to propose means for more precise adjustment of the flexion imposed on the crenellated rollers to compensate for the flexion of the support roller; another object is to distribute the load imposed on the crenellated rollers while guiding them in rotation in order to further reduce the load on their bearings.
  • a machine intended to conform a flat sheet metal into a cone or cylinder a machine known as a "rolling machine” or a “bending machine”, of the type of machine in which the bending of the sheet metal results from the passage of the latter between a roller called support and a train of crenellated rollers with parallel axes
  • the crenelated rollers are subjected to the pressure of a train of three pressure rollers with axes parallel to the axes of the crenelated rollers, namely a pressure roller median pressing both on the crenellated rollers and the so-called lateral rollers, the line of contact between the latter and the crenellated rollers being situated above the plane defined by the axes of the crenellated rollers, the axes of the rollers of the 'assembly, called mobile, crenellated pressure rollers being substantially fixed relative to each other; preferably the contact line of the pressure rollers with the crenellated rollers is situated at approximately 45 °
  • the support rollers and the crenellated rollers are shaped in a plurality of coaxial trains, the ends of the rollers of each train being engaged in bearings of intermediate support plates and ends, said support plates being integral with a beam movable in the vertical direction only.
  • the adjustment of the rolling radius results from a precise vertical displacement of said set of rollers perpendicular to their axes, this displacement being induced by a displacement parallel to the axes of the rollers of a first ramp (at least ) bearing on the one hand on a frame of the machine and on the other hand on a second ramp (at least) integral with the axis bearings of the rollers of the mobile assembly.
  • This characteristic results in better reproducibility of the positioning of the rolled sheet at the end of the operation, which ultimately promotes the automation of operations.
  • a plurality of first ramps is provided in the edge of a bar, called ramps, while an identical plurality of second ramps is formed by so-called "sloping" calles integral with said mobile beam; a good value for the angle formed by the plane of each ramp and the roller axes is approximately 6 ° (slope of approximately 10%); each sloping wedge comprises independent means of positioning in a direction parallel to that of the axes of the rollers.
  • the means for positioning a sloping wedge are constituted by a plane slide parallel to the plane of the axes of the crenellated rollers, and oriented at approximately 45 ° relative to the direction of these axes.
  • the movement of the ramp bar in the direction of the axis of the rollers is caused by a jack fixed to the frame, jack whose rod is connected to said bar by pairs of tie rods and crosspieces, the "out" position. of the rod corresponding to the "lowered” position of the roller assembly while a stop limiting the exit of the rod is mounted at the end of a threaded shaft meshing in a nut of a gantry secured to the frame, the threaded shaft with a crank handle.
  • the comb serves as a guide surface for the flat sheets before their passage between the rollers; a notch with a width at least equal to that of said bearing support veil is disposed at the end of each tooth on the side opposite to said guide surface; the end of each harpoon has at its upper part a small protruding rim; finally the comb is supported by a frame articulated at each of its ends around the support roller.
  • a rolling machine of the prior art such as that described in the publication FR-A-2,528,335 comprises a support roller 1, two serrated rollers 2 and 3 and a single pressure roller 4, at the difference, appearing well by approximation of fig.3, of the rolling machine of the present invention.
  • a rolling machine of the invention consists of a fixed frame comprising mainly a veil-beam upper-5, two gantries, front-6 and rear 7, a veil-support-8 bearing-9, a pair of guide rails 10. It also consists of mobile parts comprising a support roller 11, only mobile in rotation, and a mobile assembly 12 including a beam 21 and the crenellated rollers (13,14) and support ( 15, 16, 17).
  • the beam 21 is suspended from the web-beam 5 by suspensions with springs 23 and rods 24; wedges, called “sloping" 25 are fixed to the upper wing of the beam, which is advantageously an H-beam, facing ramps 26 cut in the edge of a bar 27, called ramps, and are permanently biased against the latter by the springs 23; the ramp bar 27 can slide in slides 28 parallel to the axes of the rollers (ie horizontally in the case of the machine in the figures), the sliding of the bar inducing a sliding of the ramps against the wedges and a vertical movement of the latter and of the mobile assembly 12 of which they are integral; there will be slides 29 for vertical guide of the assembly 12.
  • a motor-reduction unit 30 for driving the support roller 11 and on the other hand a set 31 of means intended for adjusting the bending radius of the sheets; these means 31 comprise a jack 32 whose body is integral with the gantry 7 and whose rod 33 is connected to a first cross member 34 which is itself connected by a couple of tie rods 38 to a second cross member 39 which is itself secured to the bar ramps 27.
  • a threaded shaft 40 coaxial with the rod 33 is supported by a secondary frame 41 secured to the main frame (5,7); a first end of the shaft supports, or forms, a stop 42 to limit the exit of the rod 33, while its other end supports an indexable crank 43 and provided with a position indicator.
  • each wedge is constituted by a prismatic block 50, of anti-friction metal for example, shaped at its base, in dovetail for example, to be able to be guided in sliding in a slide 51 of corresponding shape, formed in a base 52 fixed on the beam 21;
  • the slide as is clearly visible in fig.6 is oriented at about 45 ° relative to the direction of the axes of the rollers, or also relative to the direction of sliding of the ramp bar;
  • the adjustment of the position of the wedge along its slide is effected by means of two coaxial and antagonistic screws 53, screwed in nuts 54 secured to the base, and the ends of which bear on flats 55 of the block;
  • the upper face of the block forms an inclined plane 56 parallel to the face of the ramps; for reasons of convenience and simplification of the machining, the planes of the sides of the ramp are perpendicular to the median longitudinal plane of the ramp bar and, necessarily parallel to one another; it follows from this arrangement that
  • the inclination of the plane of the ramps and the shims is approximately 6 ° relative to the direction of the axes of the rollers (that is, a slope of approximately 10% relative to the direction of sliding of the ramp bar); it follows from this slope value, that the vertical displacement of the mobile assembly 12 is ten times smaller than the movement of the ramp bar 21 which causes it.
  • a quarter turn of the crank 43 will have the effect of modifying the stroke of the bar by one millimeter and the stroke of the mobile assembly by one tenth of a millimeter; this precision is not excessive since it conditions the obtaining of the desired bending radius, and therefore the proper functioning of the subsequent automations.
  • improved means participating in the loading (introduction of the sheet between the rollers) and in the unloading include a set, called comb 60, of teeth 61, also called harpoons because of their shape and their function , supported by a U-shaped frame 62, the arms 63 of which are articulated on, and at the ends of, the support roller 11; jacks 64 are engaged on extensions 65 of arms 63 to impart to them a pivoting movement around the axis of roller 11 (arrows 70).
  • Each tooth, or harpoon 61 has a notch 66 at the bottom and at the rims of its end and, at the upper part of its end, a protruding rim 67.
  • the width 1 ′ of the notches 66 is equal to or slightly greater than l thickness 1 ⁇ of the support veil 8 of the bearing 9. It will be noted, in FIG. 5, that the plane 68 formed by the upper face of the harpoons is substantially tangent to the roller 11 and that the line of tangency is very close to the contact line of the crenellated rollers 14 when the chassis 62 is in the low position, while the notches, also tangent to the roller 11, are aligned with the support web 8 when the chassis is in the raised position.
  • the comb serves as a table for guiding the sheets T in the direction of the rollers; thus again, in the high position and at the end of the cycle (FIGS. 8c and 8d), the notches keep the straight edges of the rolled sheets separate and align these edges on each side of the support veil.
  • the pivoting of the chassis limited by adjustable stops 71,72 (fig.4), is very precise and this precision allows the automatic extraction of the sheet after rolling.
  • This extraction is carried out by a pusher 75 grazing the underside of the support roller 11; the pusher is supported by a carriage 76 driven back and forth by a pair of chains 77 in the rails 10; the extractor standby position is that shown in fig.1.
  • the rolling machine of the invention operates the bending in a single pass, and the consecutive automatic ejection, thanks to the precise positioning of the harpoons, leads to a duration of the cycle of an operation, considerably reduced; the precision of the bending radius and that of the parallelism of the straight edges facing (edges) allows direct coupling to the machine (that is to say without intermediate handling) any automatic shell welder.
  • the means of the invention 31 intended for adjusting the bending radius could be automatic means indexed to the angular position in rotation of the support roller 11 which is also a drive roller, whereby the bending radius may vary during a cycle to allow obtaining a more or less elliptical or working cylinder.
  • These means can be, for example, of the cylinder type supplied through servo-valves, or else with ball screws for the operation of the ramp bar and DC motor; the control of the adjustment means will then preferably be of the digital type. Obviously the control could also be of analog type by a mechanical transmission of the movement of the support roller to the ramp bar.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Control Of Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

A bending machine for shaping a flat sheet into a cylinder or cone by passing the sheet between a support roll and a train crenelated rolls having parallel axes. The crenelated rolls are subjected to pressure by a train of press rolls having axes parallel to those of the crenelated rolls.

Description

La présente invention est du domaine du travail des matériaux par déformation et elle a plus particulièrement pour objet des perfectionnements aux machines de cintrage des tôles plates pour les conformer en cylindre ou en cône ; ces machines sont communément appellées rouleuses.The present invention is in the field of working materials by deformation and it more particularly relates to improvements to machines for bending flat sheets to conform them into cylinders or cones; these machines are commonly called rollers.

On rappelle que l'on connait des rouleuses dans lesquelles le cintrage de la tôle résulte du passage de cette dernière entre un rouleau dit d'appui et un train de rouleaux crénelés d'axes parallèles à l'axe du précédent et généralement situé au-dessus de lui ; les surfaces cylindriques des rouleaux crénélés s'interpénêtrent et le rayon de cintrage est défini par la position plus ou moins rapprochée du rouleau d'appui de l'ensemble des rouleaux crénelés.It will be recalled that rollers are known in which the bending of the sheet metal results from the passage of the latter between a so-called support roller and a train of crenellated rollers with axes parallel to the axis of the previous one and generally located at- above him; the cylindrical surfaces of the crenellated rollers intersect and the bending radius is defined by the more or less close position of the support roller of all the crenelated rollers.

Le principal problème posé par les rouleuses est celui de la flexion des rouleaux, et particulièrement du rouleau d'appui dont le comportement s'analyse comme celui d'une poutre nécessairement assez longue et mince ; une solution de ce problème a consisté à imposer une flexion correspondante aux rouleaux antagoni­stes, dans le cas présent les rouleaux crénelés. On a donc proposé comme moyen de cette solution, mais aussi pour d'autres raisons, l'emploi d'un rouleau presseur d'un diamètre comparable à celui du rouleau d'appui et de galets exerçant une pression différenciée sur le rouleau presseur peut être infléchi et grâce à quoi encore les rouleaux crénelés ne font que transmettre la pression du rouleau presseur sans que leurs paliers subissent un effort considé­rable.The main problem posed by rolling machines is that of the bending of the rollers, and particularly of the support roller, the behavior of which is analyzed like that of a necessarily long and thin beam; one solution to this problem consisted in imposing a corresponding flexion on the opposing rollers, in this case the crenellated rollers. It has therefore been proposed as a means of this solution, but also for other reasons, the use of a pressure roller with a diameter comparable to that of the support roller and rollers exerting a differentiated pressure on the pressure roller can be bent and thanks to which still the crenellated rollers only transmit the pressure of the pressure roller without their bearings undergoing a considerable effort.

Cet art antérieur est bien décrit dans des publications FR-A 2 411 647 et FR-A 2 528 335, toutes deux au nom de la présente demanderesse. La rouleuse, comportant les perfectionnements de la dernière publication, a donné d'excéllents résultats quant à la précision du rayon de centrage obtenu ; cependant par le fait du déplacement bi-axial des trains de rouleaux crénelés la machine se prêtait mal à un travail à grande productivité. En outre et en raison de la forme d'un organe, dit harpon, le positionnement, après roulage, des bords rectilignes des tôles, n'était pas suffisamment précis.This prior art is well described in publications FR-A 2 411 647 and FR-A 2 528 335, both in the name of the present applicant. The rolling machine, incorporating the improvements of the last publication, has given excellent results as regards the precision of the centering radius obtained; however due to the bi-axial displacement of the crenellated roller trains the machine did not lend itself to high productivity work. In addition and due to the shape of a member, called a harpoon, the positioning, after rolling, of the straight edges of the sheets, was not sufficiently precise.

Or, l'un des buts visés par la présente invention est de proposer une rouleuse à fonc­tionnement automatique, pouvant être associée à une soudeuse travaillant derrière elle et travaillant aussi de façon automatique ; un autre but de l'invention est de proposer des moyens de réglage plus précis de la flexion imposée aux rouleaux crénelés pour compenser la flexion du rouleau d'appui ; un autre but est de répartir la charge imposée aux rouleaux crénelés tout en les guidant en rotation afin de diminuer encore la charge de leurs paliers.However, one of the aims of the present invention is to provide an automatic rolling machine, which can be associated with a welder working behind it and also working automatically; another object of the invention is to propose means for more precise adjustment of the flexion imposed on the crenellated rollers to compensate for the flexion of the support roller; another object is to distribute the load imposed on the crenellated rollers while guiding them in rotation in order to further reduce the load on their bearings.

Selon la présente invention une machine destinée à conformer en cône ou en cylindre une tôle plate, machine dite "rouleuse" ou "cintreuse", du genre de machine dans lequel le cintrage de la tôle résulte du passage de cette dernière entre un rouleau dit d'appui et un train de rouleaux crénelés d'axes parallèles, est principalement caractérisée en ce que les rouleaux crénelés sont soumis à la pression d'un train de trois rouleaux presseurs d'axes parallèles aux axes des rouleaux crénelés, à savoir un rouleau presseur médian faisant pres­sion à la fois sur chacun des rouleaux crénelés, et des rouleaux dits latéraux, la ligne de contact entre ces der­niers et les rouleaux crénelés étant située au-dessus du plan défini par les axes des rouleaux crénelés, les axes des rouleaux de l'ensemble, dit mobile, des rouleaux pres­seurs et crénelés étant substanciellement fixes les uns par rapport aux autres ; de préférence la ligne de contact des rouleaux presseurs avec les rouleaux crénelés est située à environ 45° au-dessus du plan défini par les axes des rouleaux crénelés.According to the present invention a machine intended to conform a flat sheet metal into a cone or cylinder, a machine known as a "rolling machine" or a "bending machine", of the type of machine in which the bending of the sheet metal results from the passage of the latter between a roller called support and a train of crenellated rollers with parallel axes, is mainly characterized in that the crenelated rollers are subjected to the pressure of a train of three pressure rollers with axes parallel to the axes of the crenelated rollers, namely a pressure roller median pressing both on the crenellated rollers and the so-called lateral rollers, the line of contact between the latter and the crenellated rollers being situated above the plane defined by the axes of the crenellated rollers, the axes of the rollers of the 'assembly, called mobile, crenellated pressure rollers being substantially fixed relative to each other; preferably the contact line of the pressure rollers with the crenellated rollers is situated at approximately 45 ° above the plane defined by the axes of the crenelated rollers.

Avantageusement et suivant une autre caractéristique principale de l'invention les rouleaux d'appui et les rouleaux crénelés sont conformés en une pluralité de trains coaxiaux, les extrémités des rouleaux de chaque train étant engagées dans des paliers de plaques-support intermédiaires et d'extrémités, les dites plaques-support étant solidaires d'une poutre mobile dans le seul sens vertical.Advantageously and according to another main characteristic of the invention, the support rollers and the crenellated rollers are shaped in a plurality of coaxial trains, the ends of the rollers of each train being engaged in bearings of intermediate support plates and ends, said support plates being integral with a beam movable in the vertical direction only.

Il résulte des caractéristiques sus-énumérées, et notamment de la première, une répartition plus judicieuse de l'effort et une décharge importante des paliers des rouleaux crénelés.It results from the above-listed characteristics, and in particular from the first, a more judicious distribution of the force and a significant discharge of the bearings of the crenellated rollers.

Selon une autre caractéristique de l'invention le réglage du rayon de roulage résulte d'un déplacement vertical précis dudit ensemble de rouleaux perpendiculairement à leurs axes, ce déplacement étant induit par un déplacement parallèle aux axes des rouleaux d'une première rampe (au moins) prenant appui d'une part sur un bâti de la machine et d'autre part sur une seconde rampe (au moins) solidaire des paliers d'axes des rouleaux de l'ensemble mobile. Il résulte de cette caractéristique une meilleure reproductibilité du positionnement de la tôle roulée en fin d'opération, ce qui en définitive favorise l'automatisation des opérations.According to another characteristic of the invention, the adjustment of the rolling radius results from a precise vertical displacement of said set of rollers perpendicular to their axes, this displacement being induced by a displacement parallel to the axes of the rollers of a first ramp (at least ) bearing on the one hand on a frame of the machine and on the other hand on a second ramp (at least) integral with the axis bearings of the rollers of the mobile assembly. This characteristic results in better reproducibility of the positioning of the rolled sheet at the end of the operation, which ultimately promotes the automation of operations.

Avantageusement encore une pluralité de premières rampes est ménagée dans le bord d'une barre, dite de rampes, tandis qu'une pluralité identi­que de secondes rampes est contituée par des calles dites "pentées" solidaires de la dite poutre mobile ; une bonne valeur de l'angle formé par le plan de chaque rampe et les axes de rouleau est d'environ 6° (pente d'environ 10%) ; chaque cale pentée comporte des moyens indépendants de positionnement dans une direction parallèle à celle des axes des rouleaux. Suivant une forme particulière de reali­sation, les moyens de posisionnement d'une cale pentée sont constitués par une glissière de plan parallèle au plan des axes des rouleaux crénelés, et orientée à 45° environ par rapport à la direction de ces axes.Advantageously also, a plurality of first ramps is provided in the edge of a bar, called ramps, while an identical plurality of second ramps is formed by so-called "sloping" calles integral with said mobile beam; a good value for the angle formed by the plane of each ramp and the roller axes is approximately 6 ° (slope of approximately 10%); each sloping wedge comprises independent means of positioning in a direction parallel to that of the axes of the rollers. According to a particular embodiment, the means for positioning a sloping wedge are constituted by a plane slide parallel to the plane of the axes of the crenellated rollers, and oriented at approximately 45 ° relative to the direction of these axes.

Il résulte de ces dernières dispositions une possibilité de réglage précis et pratique du rayon de cintrage d'une part et de la compensation de flexion du rouleau d'appui, d'autrepart.It follows from these latter arrangements a possibility of precise and practical adjustment of the bending radius on the one hand and of the compensation of bending of the support roller, on the other hand.

Avantageusement le déplacement,de la barre de rampes dans le sens de l'axe des rouleaux est provoqué par un verin solidaire du bâti, verin dont la tige est reliée à la dite barre par des couples de tirants et traverses, la position "sortie" de la tige correspondant à la position "abaissée" de l'ensemble de rouleaux tandis qu'une butée limitant la sortie de la tige est montée en bout d'un arbre fileté engrenant dans un écrou d'un portique solidaire du bâti, l'arbre fileté comportant une manivelle indéxable.Advantageously, the movement of the ramp bar in the direction of the axis of the rollers is caused by a jack fixed to the frame, jack whose rod is connected to said bar by pairs of tie rods and crosspieces, the "out" position. of the rod corresponding to the "lowered" position of the roller assembly while a stop limiting the exit of the rod is mounted at the end of a threaded shaft meshing in a nut of a gantry secured to the frame, the threaded shaft with a crank handle.

D'autres dispositions caractéris­tiques s'appliquent à la disposition connue dans son principe d'un peigne mobile en rotation dont les dents sont tangentes au rouleau d'appui, et peuvent par rotation du peigne autour de l'axe du rouleau d'appui, pénêtrer entre les rouleaux crénelés pour séparer les bords rectilignes des tôles roulées. Suivant ces dispositions caractéristiques le peigne sert de surface de guidage aux tôles plates avant leur passage entre les rouleaux; un cran d'une largeur au moins égale à celle dudit voile-support de palier est disposé à l'extrémité de chaque dent du côté opposé à la dite surface de guidage; l'extrémité de chaque harpon com­porte à sa partie supérieure un petit rebord en saillie; enfin le peigne est supporté par un cadre articulé à chacune de ses extrémités autour du rouleau d'appui.Other characteristic arrangements apply to the arrangement known in principle of a comb movable in rotation, the teeth of which are tangent to the support roller, and can by rotation of the comb around the axis of the support roller, penetrate between the crenellated rollers to separate the straight edges from the rolled sheets. According to these characteristic arrangements, the comb serves as a guide surface for the flat sheets before their passage between the rollers; a notch with a width at least equal to that of said bearing support veil is disposed at the end of each tooth on the side opposite to said guide surface; the end of each harpoon has at its upper part a small protruding rim; finally the comb is supported by a frame articulated at each of its ends around the support roller.

La présente invention sera mieux comprise et des détails en relevant apparaitront à la description qui va être faite d'une rouleuse de l'inven­tion, en relation avec les figures des planches annexées dans lesquelles :

  • - la fig.1 est une représentation schématique en coupe de la disposition des rouleaux dans une rouleuse de l'art antérieur,
  • - la fig.2 est une élévation d'un rouleau conforme à l'invention,
  • - la fig.3 illustre comparative­ ment à la fig.1 la disposition des rouleaux conformes à l'invention,
  • - la fig.4 est une perspective illustrant le rouleau d'appui de la rouleuse de fig.2 associé à des organes d'éjection des tôles roulées,
  • - la fig.5(5a) est une vue schématique en bout, comparable à la fig.3 et illustrant (5a) le détail de certains organes de la fig.4,
  • - la fig.6 illustre en plan l'un des moyens de réglage de la compensation de flexion du rouleau d'appui de la rouleuse de la fig.1,
  • - la fig.7 est une élévation correspondante des moyens de réglage de la fig.6,
  • - la fig.8 (a,b,c,d) illustre schématiquement le fonctionnement de la rouleuse de l'inven­tion, à différentes étapes.
The present invention will be better understood and details will be apparent from the description which will be made of a rolling machine of the invention, in relation to the figures of the appended plates in which:
  • - Fig.1 is a schematic sectional representation of the arrangement of the rollers in a rolling machine of the prior art,
  • - Fig.2 is an elevation of a roller according to the invention,
  • - fig.3 illustrates comparative in fig.1 the arrangement of the rollers according to the invention,
  • FIG. 4 is a perspective illustrating the support roller of the rolling machine of FIG. 2 associated with members for ejecting the rolled sheets,
  • - fig.5 (5a) is a schematic end view, comparable to fig.3 and illustrating (5a) the detail of certain organs of fig.4,
  • FIG. 6 illustrates in plan one of the means for adjusting the bending compensation of the support roller of the rolling machine of FIG. 1,
  • - fig.7 is a corresponding elevation of the adjustment means of fig.6,
  • - Fig.8 (a, b, c, d) schematically illustrates the operation of the rolling machine of the invention, at different stages.

Sur la fig.1 une rouleuse de l'art antérieur, telle que celle décrite dans la publication FR-A-2.528.335 comporte un rouleau d'appui 1, deux rouleaux crénelés 2 et 3 et un rouleau presseur 4 unique, à la dif­férence ,apparaissant bien par rapprochement de la fig.3, de la rouleuse de la présente invention.In fig.1 a rolling machine of the prior art, such as that described in the publication FR-A-2,528,335 comprises a support roller 1, two serrated rollers 2 and 3 and a single pressure roller 4, at the difference, appearing well by approximation of fig.3, of the rolling machine of the present invention.

Sur la fig.2 une rouleuse de l'invention est constituée d'un bâti fixe comprenant princi­palement un voile-poutre supérieur-5, deux portiques, avant-6 et arrière 7, un voile-support-8 de palier-9, un couple de rails de guidage 10. Elle est constituée aussi de parties mobiles comprenant un rouleau d'appui 11, uniquement mobile en rotation, et un ensemble mobile 12 incluant une poutre 21 et les rouleaux crénelés(13,14) et d'appui(15,16,17).In fig.2 a rolling machine of the invention consists of a fixed frame comprising mainly a veil-beam upper-5, two gantries, front-6 and rear 7, a veil-support-8 bearing-9, a pair of guide rails 10. It also consists of mobile parts comprising a support roller 11, only mobile in rotation, and a mobile assembly 12 including a beam 21 and the crenellated rollers (13,14) and support ( 15, 16, 17).

Il apparaît bien sur la fig.2 que les rouleaux presseurs et les rouleaux crénelés sont conformés en une pluralité de trains coaxiaux engagés dans des paliers de plaques-support intermédiaires 18 et d'extré­mités 19 ; Il apparaît aussi sur la fig.3 (voir aussi fig.5) que la ligne de contact des rouleaux presseurs-15,17 avec les rouleaux crénelés-13,14 est située à 45° environ au-des­ sus du plan 20 défini par les axes des rouleaux crénelés.It appears clearly in FIG. 2 that the pressure rollers and the crenellated rollers are shaped in a plurality of coaxial trains engaged in bearings of intermediate support plates 18 and of ends 19; It also appears in fig.3 (see also fig.5) that the contact line of the pressure rollers-15,17 with the crenellated rollers-13,14 is located at approximately 45 ° above above the plane 20 defined by the axes of the crenellated rollers.

Toujours sur la fig.2, il appa­raît que la poutre 21 est suspendue au voile-poutre 5 par des suspensions à ressorts 23 et tiges 24; des cales, dites "pentées" 25 sont fixées à l'aile supérieure de la poutre, qui est avantageusement une poutre en H, en regard de rampes 26 taillées dans le bord d'une barre 27, dite de rampes, et sont en permanence sollicitées en appui contre ces dernières par les ressorts 23; la barre de rampes 27 peut coulisser dans des coulisses 28 parallèlement aux axes des rouleaux (soit horizontalement dans le cas de la machine des figures), le coulissement de la barre indui­sant un glissement des rampes contre les cales et un mouve­ment vertical de ces dernières et de l'ensemble mobile 12 dont elles sont solidaires; on remarquera des glissières 29 de guidage vertical de l'ensemble 12.Still in FIG. 2, it appears that the beam 21 is suspended from the web-beam 5 by suspensions with springs 23 and rods 24; wedges, called "sloping" 25 are fixed to the upper wing of the beam, which is advantageously an H-beam, facing ramps 26 cut in the edge of a bar 27, called ramps, and are permanently biased against the latter by the springs 23; the ramp bar 27 can slide in slides 28 parallel to the axes of the rollers (ie horizontally in the case of the machine in the figures), the sliding of the bar inducing a sliding of the ramps against the wedges and a vertical movement of the latter and of the mobile assembly 12 of which they are integral; there will be slides 29 for vertical guide of the assembly 12.

Sur la partie droite de la fig.2 on a représenté d'une part un groupe moto-réducteur 30 d'entrainement du rouleau d'appui 11, et d'autre part un ensemble 31 de moyens destinés au réglage du rayon de cin­trage des tôles; ces moyens 31 comprennent un vérin 32 dont le corps est solidaire du portique 7 et dont la tige 33 est reliée à une première traverse 34 elle-même reliée par un couple de tirants 38 à une seconde traverse 39 elle­-même solidaire de la barre de rampes 27. Un arbre fileté 40 coaxial à la tige 33 est supporté par un bâti secondaire 41 solidaire du bâti principal(5,7); une première extrémité de l'arbre supporte, ou forme, une butée 42 pour limiter la sortie de la tige 33, tandis que son autre extrémité supporte une manivelle 43 indexable et munie d'un indicateur de position.On the right-hand side of FIG. 2 there is shown on the one hand a motor-reduction unit 30 for driving the support roller 11, and on the other hand a set 31 of means intended for adjusting the bending radius of the sheets; these means 31 comprise a jack 32 whose body is integral with the gantry 7 and whose rod 33 is connected to a first cross member 34 which is itself connected by a couple of tie rods 38 to a second cross member 39 which is itself secured to the bar ramps 27. A threaded shaft 40 coaxial with the rod 33 is supported by a secondary frame 41 secured to the main frame (5,7); a first end of the shaft supports, or forms, a stop 42 to limit the exit of the rod 33, while its other end supports an indexable crank 43 and provided with a position indicator.

Sur la partie gauche de la fig.2 on a symbolisé, en tirets, une autre machine, telle qu'une soudeuse, pouvant travailler à la suite et en synchronisme, avec la rouleuse de la figure.On the left-hand side of fig. 2 we have symbolized, in dashes, another machine, such as a welder, which can work in succession and in synchronism with the rolling machine of the figure.

Suivant le mode avantageux de réalisation des cales illustré sur les fig.5 et 6, chaque cale est constituée par un bloc 50 prismatique, de métal antifriction par exemple, conformé à sa base, en queue d'aronde par exemple, pour pouvoir être guidé en coulissement dans une glissière 51 de forme correspondante, ménagée dans un socle 52 fixé sur la poutre 21; la glissière, comme cela est bien visible sur la fig.6 est orientée à environ 45° par rapport à la direction des axes des rouleaux, ou encore par rapport à la direction de coulissement de la barre de rampes; le réglage de la position de la cale le long de sa glissière est opéré au moyen de deux vis 53 coaxiales et antagonistes, vissées dans des écrous 54 soli­daire de socle, et dont les extrémités prennent appui sur des méplats 55 du bloc; la face supérieure du bloc forme un plan incliné 56 parallèle à la face des rampes; pour des raisons de commodité et de simplification de l'usinage les plans des faces des rampe sont perpendiculaires au plan longitudinal médian de la barre de rampe et, nécéssai­rement parallèle entre eux; il découle de cette disposition qu'un coulissement sur une distance d du bloc dans la glis­sière est équivalent à un coulissement de valeur 0,7d effec­tué dans le plan de la barre de rampes; il en résulte en défintive une petite démultiplication favorable à la préci­sion du réglage, et une meilleure accéssibilité des moyens de réglage. L'inclinaison du plan des rampes et des cales est d'environ 6° par rapport à la direction des axes des rouleaux (soit encore une pente d'environ 10% par rapport à la direction de coulissement de la barre de rampes); il résulte de cette valeur de pente, que le déplacement vertical de l'ensemble mobile 12 est dix fois plus petit que le mouvement de la barre de rampes 21 qui le provoque. A titre d'exemple, un quart de tour de la manivelle 43 aura pour effet de modifier la course de la barre d'un millimetre et la course de l'ensemble mobile d'un dixième de millimetre; cette précision n'est pas excéssive puis­qu'elle conditionne l'obtension du rayon de cintrage désiré, et de ce fait le bon fonctionnement des automatismes ulté­rieurs.According to the advantageous embodiment of the shims illustrated in FIGS. 5 and 6, each wedge is constituted by a prismatic block 50, of anti-friction metal for example, shaped at its base, in dovetail for example, to be able to be guided in sliding in a slide 51 of corresponding shape, formed in a base 52 fixed on the beam 21; the slide, as is clearly visible in fig.6 is oriented at about 45 ° relative to the direction of the axes of the rollers, or also relative to the direction of sliding of the ramp bar; the adjustment of the position of the wedge along its slide is effected by means of two coaxial and antagonistic screws 53, screwed in nuts 54 secured to the base, and the ends of which bear on flats 55 of the block; the upper face of the block forms an inclined plane 56 parallel to the face of the ramps; for reasons of convenience and simplification of the machining, the planes of the sides of the ramp are perpendicular to the median longitudinal plane of the ramp bar and, necessarily parallel to one another; it follows from this arrangement that a sliding over a distance d of the block in the slide is equivalent to a sliding of value 0.7 d carried out in the plane of the ramp bar; this results in defintive a small reduction favorable to the precision of the adjustment, and a better accessibility of the adjustment means. The inclination of the plane of the ramps and the shims is approximately 6 ° relative to the direction of the axes of the rollers (that is, a slope of approximately 10% relative to the direction of sliding of the ramp bar); it follows from this slope value, that the vertical displacement of the mobile assembly 12 is ten times smaller than the movement of the ramp bar 21 which causes it. By way of example, a quarter turn of the crank 43 will have the effect of modifying the stroke of the bar by one millimeter and the stroke of the mobile assembly by one tenth of a millimeter; this precision is not excessive since it conditions the obtaining of the desired bending radius, and therefore the proper functioning of the subsequent automations.

Sur les fig.4 et 5, des moyens perfectionnés participant au chargement (introduction de la tole entre les rouleaux) et au déchargement comprennent un ensemble, dit peigne 60, de dents 61, dites aussi harpons en raison de leur forme et de leur fonction, supporté par un châssis en U 62 dont les bras 63 sont articulés sur, et aux extrémités, du rouleau d'appui 11; des vérins 64 sont en prise sur des prolongements 65 des bras 63 pour leur communiquer un mouvement de pivotement autour de l'axe du rouleau 11 (flêches 70). Chaque dent, ou harpon 61, comporte au dessous et au vosinage de son extrémité un cran 66 et, à la partie supérieure de son son extrémité, un rebord en saillie 67. La largeur 1′ des crans 66 est égale ou légèrement supérieure à l'épaisseur 1˝ du voile-sup­port 8 du palier 9. On remarquera, sur la fig.5, que le plan 68 constitué par la face suppérieure des harpons est sensiblement tangent au rouleau 11 et que la ligne de tan­gence est très voisine de la ligne de contact des rouleaux crénelés 14 lorsque le châssis 62 est en position basse, tandis que les crans, tangents aussi au rouleau 11, sont alignés avec le voile-support 8 lorsque le châssis est en position relevée.In FIGS. 4 and 5, improved means participating in the loading (introduction of the sheet between the rollers) and in the unloading include a set, called comb 60, of teeth 61, also called harpoons because of their shape and their function , supported by a U-shaped frame 62, the arms 63 of which are articulated on, and at the ends of, the support roller 11; jacks 64 are engaged on extensions 65 of arms 63 to impart to them a pivoting movement around the axis of roller 11 (arrows 70). Each tooth, or harpoon 61, has a notch 66 at the bottom and at the rims of its end and, at the upper part of its end, a protruding rim 67. The width 1 ′ of the notches 66 is equal to or slightly greater than l thickness 1 ˝ of the support veil 8 of the bearing 9. It will be noted, in FIG. 5, that the plane 68 formed by the upper face of the harpoons is substantially tangent to the roller 11 and that the line of tangency is very close to the contact line of the crenellated rollers 14 when the chassis 62 is in the low position, while the notches, also tangent to the roller 11, are aligned with the support web 8 when the chassis is in the raised position.

Ainsi, en position basse et en début de cycle (fig.8a), le peigne sert de table guidage des tôles T en direction des rouleaux; ainsi encore, en posi­tion haute et en fin de cycle (fig.8c et 8d) les crans maintiennent séparés le bords rectilignes des tôles roulées et alignent ces bords de chaque côté du voile-support. Le pivotement du châssis, limité par des butées réglab­les 71,72(fig.4), est très précis et cette précision autorise l'extraction automatique de la tôle après roulage. Cette extraction est opérée par un pousoir 75 frôlant la face inférieure du rouleau d'appui 11; le poussoir est supporté par un chariot 76 entrainé en aller-retour par un couple de chaines 77 dans les rails 10; la position d'attente de l'extracteur est celle représentée en fig.1.Thus, in the low position and at the start of the cycle (fig.8a), the comb serves as a table for guiding the sheets T in the direction of the rollers; thus again, in the high position and at the end of the cycle (FIGS. 8c and 8d), the notches keep the straight edges of the rolled sheets separate and align these edges on each side of the support veil. The pivoting of the chassis, limited by adjustable stops 71,72 (fig.4), is very precise and this precision allows the automatic extraction of the sheet after rolling. This extraction is carried out by a pusher 75 grazing the underside of the support roller 11; the pusher is supported by a carriage 76 driven back and forth by a pair of chains 77 in the rails 10; the extractor standby position is that shown in fig.1.

Ainsi grâce aux dispositions de l'invention on peut régler le rayon de cintrage des tôles par la manoeuvre d'un seul organe (la barre de rampes) ce qui supprime la nécessité d'un savoir-faire très empiri­que.So thanks to the provisions of the invention it is possible to adjust the bending radius of the sheets by the operation of a single member (the ramp bar) which eliminates the need for very empirical know-how.

En outre la rouleuse de l'inven­tion opère le cintrage en une seule passe, et l'éjection automatique consécutive, grâce au positionnement précis des harpons, conduit à une durée du cycle d'une opération, considérablement réduite ; la précision du rayon de cintrage et celle du parallèlisme des bords rectilignes en regards (rives) permet d'accoupler directement à la machine (c'est-à-­dire sans manutention intermédiaire) n'importe quelle soudeuse automatique de virolles.In addition, the rolling machine of the invention operates the bending in a single pass, and the consecutive automatic ejection, thanks to the precise positioning of the harpoons, leads to a duration of the cycle of an operation, considerably reduced; the precision of the bending radius and that of the parallelism of the straight edges facing (edges) allows direct coupling to the machine (that is to say without intermediate handling) any automatic shell welder.

On notera que les moyens de l'invention 31 (fig.2) destinés au réglage du rayon de cintrage pourraient être des moyens automatiques indexés à la position angulaire en rotation du rouleau d'appui 11qui est aussi un rouleau moteur, grâce à quoi le rayon de cintrage pourra varier au cours d'un cycle pour permettre l'obtention d'un cylindre plus ou moins éliptique ou ouvale. Ces moyens peuvent être, par exemple, du type à verin alimen­té à travers des servo-valves, ou encore à vis à billes pour la manoeuvre de la barre de rampes et moteur à courant continu ; la commande des moyens de réglage sera alors, de préférence, de type numérique. Bien évidemment la commande pourrait être aussi de type analogique par une transmission mécanique du mouvement du rouleau d'appui à la barre de rampe.It will be noted that the means of the invention 31 (FIG. 2) intended for adjusting the bending radius could be automatic means indexed to the angular position in rotation of the support roller 11 which is also a drive roller, whereby the bending radius may vary during a cycle to allow obtaining a more or less elliptical or working cylinder. These means can be, for example, of the cylinder type supplied through servo-valves, or else with ball screws for the operation of the ramp bar and DC motor; the control of the adjustment means will then preferably be of the digital type. Obviously the control could also be of analog type by a mechanical transmission of the movement of the support roller to the ramp bar.

Bien que l'on ait décrit et représenté une forme particulière et préférée de réalisation d'une rouleuse conforme à l'invention, il doit être compris que la portée de cette dernière n'est pas limitée à cette forme mais qu'elle s'étend à toute machine de travail des métaux ou autres matières déformables, comportant séparément ou en combinaison les caractéristiques générales sus-énon­cées.Although a particular and preferred embodiment of a rolling machine according to the invention has been described and represented, it should be understood that the scope of the latter is not limited to this form but that it is extends to any machine for working metals or other deformable materials, comprising separately or in combination the general characteristics mentioned above.

Claims (10)

1.- Machine destinée à conformer en cône ou en cylindre une tôle plate, machine dite "rouleuse" ou "cintreuse", du genre de machine dans lequel le cintrage de la tôle résulte du passage de cette dernière entre un rouleau dit d' appui et un train de rouleaux crénelés d'axes parallèles, caractérisée :
en ce que les rouleaux crénelés (13,14) sont soumis à la pression d'un train de trois rouleaux presseurs d'axes parallèles aux axes des rouleaux crénelés, à savoir un rouleau presseur médian (16) faisant pression à la fois sur chacun des rouleaux crénelés (13,14), et des rouleaux dits latéraux (15,17) la ligne de contact entre ces derniers (13,14,15,17) étant situé au-dessus du plan (20) défini par les axes des rouleaux crénelés, les axes des rouleaux de l'ensemble, dit mobile, des rouleaux presseurs et crénelés étant substanciellement fixes les uns par rapport aux autres ;1.- Machine intended to conform a flat sheet metal into a cone or cylinder, a so-called "rolling machine" or "bending machine", of the type of machine in which the bending of the sheet results from the passage of the latter between a so-called support roller and a train of crenellated rollers with parallel axes, characterized:
in that the crenellated rollers (13,14) are subjected to the pressure of a train of three pressure rollers with axes parallel to the axes of the crenellated rollers, namely a central pressure roller (16) pressing on each at the same time crenellated rollers (13,14), and so-called lateral rollers (15,17) the line of contact between the latter (13,14,15,17) being situated above the plane (20) defined by the axes of the crenellated rollers, the axes of the rollers of the so-called mobile assembly, the pressure and crenelated rollers being substantially fixed with respect to each other; 2.- Machine selon la revendication 1, caractérisée :
en ce que la ligne de contact est située à environ 45° au-dessus dudit plan ;2. Machine according to claim 1, characterized:
in that the contact line is located approximately 45 ° above said plane; 3.- Machine selon la revendication 1, caractérisée :
en ce que les rouleaux presseurs (15,16) et les rouleaux crénelés sont conformés en une pluralité de trains coaxiaux, les extrémités des rouleaux de chaque train étant engagés dans des paliers de plaques support intermédiaires et d'exrémités, solidaires d'une poutre mobile verticalement ;3. Machine according to claim 1, characterized:
in that the pressure rollers (15,16) and the crenellated rollers are formed in a plurality of coaxial trains, the ends of the rollers of each train being engaged in bearings of intermediate support plates and ends, integral with a beam vertically movable; 4.- Machine selon la revencication 1, caractérisé :
en ce que le réglage du rayon de roulage résulte d'un déplacement précis dudit ensem­ble de rouleaux perpendiculairement à leurs axes, ce déplacement étant induit par un déplacement parallèle aux axes des rouleaux d'une première rampe (26,27) (au moins) prenant appui d'un part sur un bâti (5,6,7) de la machine et d'autre part sur une seconde rampe (5,6) (au moins) solidaire des paliers (18) d'axes des rouleaux (13 à 17) de l'ensemble mobile ;4.- Machine according to Revencication 1, characterized:
in that the radius adjustment of rolling results from a precise displacement of said set of rollers perpendicular to their axes, this displacement being induced by a displacement parallel to the axes of the rollers of a first ramp (26, 27) (at least) bearing on the one hand on a frame (5,6,7) of the machine and on the other hand on a second ramp (5,6) (at least) integral with the bearings (18) of axes of the rollers (13 to 17) of the assembly mobile; 5.- Machine selon les revendications 3 et 4, caractérisée :
en ce qu'une pluralité de premiè­res rampes (26) est ménagée dans le bord d'une barre (27) dite de rampes, tandis
qu'une pluratité identique de secondes rampes (56) est constituée par des calles (50) dites "pentées" solidaire de la dite partie mobile5. Machine according to claims 3 and 4, characterized:
in that a plurality of first ramps (26) is formed in the edge of a bar (27) called ramps, while
that an identical plurality of second ramps (56) is constituted by calles (50) called "sloping" secured to said moving part 6.- Machine selon la revendication 5, caractérisée :
en ce que l'angle formé par le plan de chaque rampe et les axes de rouleau est d'envi­ron 6° (pente d'environ 10%) ;6. Machine according to claim 5, characterized:
in that the angle formed by the plane of each ramp and the roller axes is approximately 6 ° (slope of approximately 10%); 7.- Machine selon la revendication 5, caractérisée :
en ce que chaque cale pentée (50) comporte un moyen indépendant de positionnement dans une direction parallèle à celle des axes des rouleaux ;7. Machine according to claim 5, characterized:
in that each sloping wedge (50) comprises an independent means of positioning in a direction parallel to that of the axes of the rollers; 8.- Machine selon la revendication 7, caractérisée :
en ce que ledit moyen de position­nement d'une cale pentée est constitué par une glissière (51) de plan parallèle au plan des axes des rouleaux crénelés et orientée à 45° environ par rapport à la direction de ces axe ;8.- Machine according to claim 7, characterized:
in that said means for positioning a sloping wedge is constituted by a slide (51) of plane parallel to the plane of the axes of the crenellated rollers and oriented at approximately 45 ° relative to the direction of these axes; 9.- Machine selon la revendication 1, la dite machine com­portant un peigne mobile en rotation dont les dents sont tangentes au rouleau d'appui, et pouvant par rota­tion du peigne autour de l'axe du rouleau d'appui, pénêtrer entre les rouleaux crénelés pour séparer les bords rectilignes des tôles roulées, caractérisée :
en ce que ledit peigne (60) sert de surface de guidage des tôles plates avant leur passage entre les rouleaux,
en ce qu'un cran (66) d'une largeur (1′) au moins égale à celle (1˝) dudit voile-support (8) est disposé à l'extrémité de chaque dent (6′) du côté opposé à la dite surface de guidage,
en ce que l'extrémité de chaque dent comporte à sa partie supérieure un petit rebord en saillie (67), et
en ce que le dit peigne est supporté par un cadre articulé (62) à chacune de ses extrémités autour du rouleau d'appui ;9. Machine according to claim 1, said machine comprising a comb movable in rotation whose teeth are tangent to the support roller, and being able, by rotation of the comb around the axis of the support roller, to penetrate between the rollers. crenellated to separate the straight edges of the rolled sheets, characterized:
in that said comb (60) serves as a guide surface for the flat sheets before their passage between the rollers,
in that a notch (66) of a width (1 ′) at least equal to that (1˝) of said support veil (8) is disposed at the end of each tooth (6 ′) on the side opposite to said guide surface,
in that the end of each tooth has at its upper part a small projecting rim (67), and
in that said comb is supported by an articulated frame (62) at each of its ends around the support roller; 10.- Machine selon la revendication 1, caractérisée :
en ce que des moyens (31) de réglage du rayon de cintrage des tôles sont des moyens automatiques indexés à la position angulaire du rouleau d'appui (11) qui est aussi un rouleau moteur.10.- Machine according to claim 1, characterized:
in that means (31) for adjusting the bending radius of the sheets are automatic means indexed to the angular position of the support roller (11) which is also a driving roller.
EP89402452A 1988-10-05 1989-09-08 Automated rolling machine with interlocking rolls Expired - Lifetime EP0368686B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8989402452T ATE105518T1 (en) 1988-10-05 1989-09-08 AUTOMABLE ROLLER DEVICE WITH COGGED ROLLERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8813381A FR2637206B1 (en) 1988-10-05 1988-10-05 AUTOMATED CRENELATED ROLLING MACHINE
FR8813381 1988-10-05

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EP0368686A1 true EP0368686A1 (en) 1990-05-16
EP0368686B1 EP0368686B1 (en) 1994-05-11

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EP (1) EP0368686B1 (en)
JP (1) JPH0761504B2 (en)
AT (1) ATE105518T1 (en)
DE (1) DE68915247T2 (en)
ES (1) ES2056240T3 (en)
FR (1) FR2637206B1 (en)
ZA (1) ZA897542B (en)

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Publication number Priority date Publication date Assignee Title
FR1308612A (en) * 1961-09-01 1962-11-09 Apparatus intended to manufacture cylindrical tubes starting from plates of a ferrous metal
US4133197A (en) * 1977-08-29 1979-01-09 Carando Machine Works Roll-type machine for forming cylindrical sheet metal bodies
FR2411647A1 (en) * 1977-12-19 1979-07-13 Jammes Sa Anc Ets Hollow cylinder forming machine - uses interfitting grooved counter rollers and comb to keep joining edges of sheet blank on horizontal tangent
EP0096643A2 (en) * 1982-06-09 1983-12-21 Jammes Industries S.A., Société dite Bending apparatus with ribbed rollers comprising means for taking into account the plate thickness, and means for compensating the roll deformation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102166591A (en) * 2011-03-09 2011-08-31 苏州领航自动化科技有限公司 Metal plate bending machine
CN102189152A (en) * 2011-03-09 2011-09-21 苏州领航自动化科技有限公司 Metal plate bending machine
CN102166591B (en) * 2011-03-09 2012-09-05 苏州领航自动化科技有限公司 Metal plate bending machine

Also Published As

Publication number Publication date
JPH02187217A (en) 1990-07-23
ES2056240T3 (en) 1994-10-01
FR2637206A1 (en) 1990-04-06
DE68915247T2 (en) 1994-12-01
DE68915247D1 (en) 1994-06-16
JPH0761504B2 (en) 1995-07-05
US4977770A (en) 1990-12-18
ATE105518T1 (en) 1994-05-15
FR2637206B1 (en) 1994-05-27
ZA897542B (en) 1990-09-26
EP0368686B1 (en) 1994-05-11

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