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EP1424148B1 - Press plant with a strip supporting table - Google Patents

Press plant with a strip supporting table Download PDF

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Publication number
EP1424148B1
EP1424148B1 EP20030292750 EP03292750A EP1424148B1 EP 1424148 B1 EP1424148 B1 EP 1424148B1 EP 20030292750 EP20030292750 EP 20030292750 EP 03292750 A EP03292750 A EP 03292750A EP 1424148 B1 EP1424148 B1 EP 1424148B1
Authority
EP
European Patent Office
Prior art keywords
front frame
tool
frame
press
metal strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20030292750
Other languages
German (de)
French (fr)
Other versions
EP1424148A1 (en
Inventor
Jean-Claude Delfosse
Jean-Michel Lamiaux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SA
Original Assignee
Renault SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault SA filed Critical Renault SA
Publication of EP1424148A1 publication Critical patent/EP1424148A1/en
Application granted granted Critical
Publication of EP1424148B1 publication Critical patent/EP1424148B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/13—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by linearly moving tables
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/006—Feeding elongated articles, such as tubes, bars, or profiles
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/021—Control or correction devices in association with moving strips

Definitions

  • the invention relates to a pressing press plant and / or cutting a metal material strip, (see for example GB-A-802 704 ).
  • the support is generally arranged in the immediate vicinity of the press.
  • the metal strip must be accompanied manually by an operator when introduced into the tool to prevent it from bending.
  • the metal strip is no longer wrapped around the reel, it must be accompanied manually by an operator to prevent it from folding or occupying an inadequate position in the reel. tool.
  • the metal strip is subjected to vertical deflections generated by the vertical movements of the tool, so that it can be made to take a curve making the final piece unfit for use.
  • the invention proposes a press installation of the type described above which makes it possible to support the strip at the beginning, during and at the end of the reel.
  • the invention proposes a press installation of the type described above, characterized in that the press comprises a table, which is received between the uprights of the frame and which is interposed longitudinally between the tool and the coil support, of which at least one belt conveyor is capable of supplying the tool with a metal band, and which is movable between a storage position in which it is arranged behind the tool to allow in particular the tool change, and a working position in which it docked the tool at a predetermined initial height of rest of the tool, then accompanies the tool in its vertical movements to support the metal strip during its treatment in the press.
  • the press comprises a table, which is received between the uprights of the frame and which is interposed longitudinally between the tool and the coil support, of which at least one belt conveyor is capable of supplying the tool with a metal band, and which is movable between a storage position in which it is arranged behind the tool to allow in particular the tool change, and a working position in which it docked the tool at a predetermined initial height of rest of the
  • the installation 10 comprises at least one press 12, a frame 14 carries at least one tool 16, vertically movable in a direction "C", which is intended to receive a metal strip 17 introduced longitudinally along the direction "A" to treat it by a method of cutting or stamping.
  • the installation 10 also comprises at least one support 18, arranged longitudinally close to the press 12, which is intended to carry and unroll a coil 19 which is rotatably mounted around an axis "B" of the support 18 and on which is wound the metal strip 17 to be treated,
  • the press comprises a web support table 20, which is received between uprights 22 of the frame 14 and which is interposed longitudinally between the tool 16 and the coil support 18, and which is intended to support the metal strip 17 during its treatment in the press, as shown in FIG. figure 3 .
  • the table 20 comprises at least at least one belt conveyor 24 which is capable of supplying the tool 16 with a metal strip 17.
  • the table 20 is movable between a compact storage position, shown in FIG. figure 1 , in which it is arranged recessed from the tool 16 to allow, for example, the tool change 16 or the maintenance of said tool 16, and a deployed working position, shown in FIG. figure 3 in which it lands the tool 16 at an initial height determined rest of the tool 16, then accompanies the tool 16 in its vertical movements direction "C" so as to support the metal strip 17 during its treatment in the press 12.
  • the tool 16 is preferably mounted on a mobile moving plate 26, which is able to move towards the table 20 in a direction "E" parallel to the direction "A" for facilitate accessibility to the tool 16 once the table 20 has been placed in its compact storage position by the operator in charge of handling the press installation.
  • the web support table 20 comprises a frame 28, which is arranged longitudinally at a determined distance from the tool 16 of the press and which is made for example in a mechanically welded construction.
  • the rear curtain 32 In the extended working position of the table 20, it consists of a cascade of parallel chains 36 which are spaced transversely from each other and whose links 38 are capable of s' nesting in each other when the rear curtain 32 is deployed on the frame 28 substantially horizontally in the extension of the front frame 30, to form a rigid surface, held between the front frame 30 and the rear end 40 of the frame 28.
  • the rigid surface 31 thus formed has been represented at figure 3 .
  • each link 38 is complementary to the rear end 38b of the adjacent link 38, to allow interlocking links as soon as they are in a horizontal position
  • the front frame 30 comprises a plurality of parallel longitudinal lines 42 of rollers 44 and the rear curtain comprises rollers 46 arranged on either side of each of the links of its chains 32, to ensure the sliding of the metal strip 17.
  • the press 12 comprises motorization means interposed between the front frame 30 and the frame 28.
  • motorization means interposed between the front frame 30 and the frame 28.
  • all the known means can be used.
  • these motorization means comprise a motor system and worm. So, as a for example a motor 68, integral with the frame 14, drives a worm 70 which receives a tab 72 integral with the front frame 30.
  • the table 20 comprises a plurality of parallel band conveyors which are spaced apart from each other and which each consist of a magnetized and motorized conveyor belt. As illustrated by figure 4 they may be conveyors 24a extending in the frame 30 between two lines 42 of adjacent rollers 44, and / or it may be, as shown in FIGS. Figures 1 to 3 of conveyors 24b extending above the frame 30.
  • the conveyor is a conveyor 24b extending above the frame 30
  • the strip 17 is made to be gripped between the conveyor 24b and the rollers 44 of the frame 30, and thereby the conveyor 24b is mounted vertically mobile end cylinders 48 which are themselves mounted on a carriage 49 mounted longitudinally movable on the frame 14, so as to allow the introduction and the routing of the metal strip 17.
  • the carriage 49 can by example be driven by a system with motor and worm, and for this purpose it comprises riders 51 which are traversed by a worm 53 rotated by a motor 55 integral with the frame 22. In this way, the cylinders 48 are likely to accompany the longitudinal movements of the front frame 30.
  • the frame 28 comprises at least two rails 47 which receive rollers 50 arranged under the front frame 30.
  • the free end 34 of the front frame 30 and the tool 16 comprise complementary abutment and transverse axis articulation means which are intended, in the position working of the table 20, to cooperate with each other to articulate and allow the vertical deflections of the front frame 30 and the rear curtain 32.
  • the tracks 56 and the ramp 60 may be carried by a housing 75 which is fixed on the tool 16.
  • the initial height of rest of the tool according to which the front frame 30 hoists the tool 16 may vary according to the type of tool 16 used, it is also necessary to allow the hinge rollers 52 to dock the ramps 60 leading to the tracks 56 according to an adjustable height.
  • the press comprises means for positioning the front frame 30 according to the determined initial height of rest of the tool 16 to allow the docking wheels 52 of articulation of the front frame 30 with the tracks 56 of the tool 16.
  • the positioning means of the front frame 30 according to the determined initial height of rest of the tool 16 comprise a pair of vertical cylinders 64, transversely aligned and arranged near the end of the rails 47 of the frame 28, of which the ends bear rollers 66 of support, and which are intended to be deployed to lift the frame before 30 so that their rollers guide said front frame 30 between its rear horizontal position of the figure 1 and his position before the figure 3 , then to retract once the rollers 52 of articulation of the front frame have been received in the tracks 56 of the tool 16.
  • the press 12 comprises at least one end-of-travel sensor 74, which is capable, when the front frame hinge rollers 52 are received in abutment in the associated tracks 56, to issue an end of travel instruction to the attention of a central control unit (not shown) controlling the stopping of the engine 68 constituting the drive means in translation of the front frame 30 and the commander the retraction of the cylinders 64.
  • the end-of-stroke sensor 74 is arranged at the free end 34 of the front frame 30.
  • the sensor is for example capable of coming into contact with a rear face 77 of a housing 75 comprising the tracks 56 for controlling the stopping the front frame 30 and retracting the cylinders 64.
  • the invention thus makes it possible to avoid deformations of the strip during manufacture, but also to facilitate its introduction into the tool 16 and to minimize losses of metallic material at the end of the strip.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Press Drives And Press Lines (AREA)

Description

L'invention concerne une installation de presse d'emboutissage et/ou de découpe d'un matériau métallique en bande, (voir par exemple GB-A-802 704 ).The invention relates to a pressing press plant and / or cutting a metal material strip, (see for example GB-A-802 704 ).

L'invention concerne plus particulièrement une installation de presse d'emboutissage et/ou de découpe d'un matériau métallique en bande, du type qui comporte :

  • au moins une presse dont un châssis porte au moins un outil verticalement mobile qui est destiné recevoir une bande métallique introduite longitudinalement pour la traiter,
  • au moins un support, agencé longitudinalement à proximité de la presse, qui est destiné à porter et à dérouler une bobine sur laquelle est enroulée la bande métallique à traiter.
The invention relates more particularly to a pressing press and / or cutting of a metal strip material, of the type which comprises:
  • at least one press of which a frame carries at least one vertically movable tool which is intended to receive a metal strip introduced longitudinally to treat it,
  • at least one support, arranged longitudinally near the press, which is intended to carry and unwind a coil on which is wound the metal strip to be treated.

On connaît de nombreux exemples d'installation de presse du type décrit précédemment.Many examples of press installations of the type described above are known.

Dans ce type d'installation, le support est généralement agencé à proximité immédiate de la presse.In this type of installation, the support is generally arranged in the immediate vicinity of the press.

En début de bobine, la bande métallique doit être accompagnée manuellement par un opérateur lors de son introduction dans l'outil pour éviter qu'elle ne se plie.At the beginning of the reel, the metal strip must be accompanied manually by an operator when introduced into the tool to prevent it from bending.

D'une manière analogue, en fin de bobine, la bande métallique n'étant plus enroulée autour de la bobine, elle doit être accompagnée manuellement par un opérateur pour éviter qu'elle ne se plie ou n'occupe une position inadéquate dans l'outil.Similarly, at the end of the reel, the metal strip is no longer wrapped around the reel, it must be accompanied manually by an operator to prevent it from folding or occupying an inadequate position in the reel. tool.

Enfin, en cours de fabrication, c'est à dire en cours de bobine, la bande métallique est soumise à des débattements verticaux engendrés par les mouvements verticaux de l'outil, de sorte qu'elle peut être amenée à prendre une courbure rendant la pièce finale impropre à son utilisation.Finally, during manufacture, ie during a coil, the metal strip is subjected to vertical deflections generated by the vertical movements of the tool, so that it can be made to take a curve making the final piece unfit for use.

Pour remédier à ces inconvénients, l'invention propose une installation de presse du type décrit précédemment qui permet de soutenir la bande en début, en cours et en fin de bobine.To remedy these drawbacks, the invention proposes a press installation of the type described above which makes it possible to support the strip at the beginning, during and at the end of the reel.

Dans ce but, l'invention propose une installation de presse du type décrit précédemment, caractérisée en ce que la presse comporte une table, qui est reçue entre des montants du châssis et qui est interposée longitudinalement entre l'outil et le support de bobine, dont au moins un convoyeur de bande est susceptible d'alimenter l'outil en bande métallique, et qui est mobile entre une position de stockage dans laquelle elle est agencée en retrait de l'outil pour permettre notamment le changement d'outil, et une position de travail dans laquelle elle accoste l'outil suivant une hauteur initiale déterminée de repos de l'outil, puis accompagne l'outil dans ses mouvements verticaux pour supporter la bande métallique pendant son traitement dans la presse.For this purpose, the invention proposes a press installation of the type described above, characterized in that the press comprises a table, which is received between the uprights of the frame and which is interposed longitudinally between the tool and the coil support, of which at least one belt conveyor is capable of supplying the tool with a metal band, and which is movable between a storage position in which it is arranged behind the tool to allow in particular the tool change, and a working position in which it docked the tool at a predetermined initial height of rest of the tool, then accompanies the tool in its vertical movements to support the metal strip during its treatment in the press.

Selon d'autres caractéristiques de l'invention :

  • la table de support de bande comporte un bâti, agencé longitudinalement à une distance déterminée de l'outil de la presse, sur lequel sont reçus en translation longitudinale un cadre avant, d'une longueur sensiblement égale à celle du bâti, qui comporte au moins un convoyeur et qui est guidé en translation sur le bâti, et un rideau arrière, d'une longueur sensiblement égale à celle du bâti, qui est lié au cadre avant, et qui sont mobiles entre :
    • une position reculée, correspondant à la position compacte de stockage de la table, dans laquelle le cadre avant occupe une position horizontale arrière en appui complet sur le bâti et dans laquelle le rideau arrière, maintenu par le cadre avant, pend en arrière du bâti suivant une position verticale sensiblement perpendiculaire au cadre avant,
    • une position avancée, correspondant à la position de travail de la table, dans laquelle le cadre avant accoste l'outil, son extrémité libre avant étant articulée sur l'outil autour d'un axe transversal, son extrémité arrière de jonction avec le rideau arrière étant en appui sur le bâti, et le rideau arrière étant déployé sur le bâti sensiblement horizontalement dans le prolongement du cadre avant,
  • le rideau arrière est constitué d'une cascade de chaînes parallèles qui sont espacées transversalement les unes des autres et dont les maillons sont susceptible de s'emboîter les uns dans les autres lorsque le rideau arrière est déployé sur le bâti sensiblement horizontalement dans le prolongement du cadre avant, pour former une surface rigide, maintenue entre le cadre avant et l'extrémité arrière du bâti, qui est susceptible de permettre le glissement de la bande métallique,
  • le cadre avant comporte une pluralité de lignes longitudinales parallèles de roulettes et le rideau arrière comporte des roulettes agencées de part et d'autre de chacun des maillons de ses chaînes, pour assurer le glissement de la bande métallique,
  • le cadre avant comporte une pluralité de convoyeurs de bande parallèles qui sont espacés les uns des autres et qui sont constitués chacun d'une bande transporteuse aimantée et motorisée, notamment :
    • une bande transporteuse aimantée et motorisée qui s'étend dans le cadre avant entre deux lignes de roulettes voisines, et/ou
    • une bande transporteuse aimantée et motorisée qui est montée sur des vérins montés sur un chariot susceptible d'accompagner les mouvements du cadre avant.
  • le bâti comporte au moins deux rails qui reçoivent des galets agencés sous le cadre avant, pour assurer le guidage en translation du cadre avant entre la position compacte de stockage ou déployée de travail de la table,
  • l'extrémité libre du cadre avant et l'outil comportent des moyens complémentaires de butée et d'articulation d'axe transversal qui sont destinés, dans la position de travail de la table, à coopérer l'un avec l'autre pour articuler et permettre les débattements verticaux du cadre avant et du rideau arrière,
  • les moyens complémentaires de butée et d'articulation comportent :
    • au moins une paire de galets d'articulation, alignés transversalement, qui sont portés par des bras s'étendant sensiblement horizontalement à partir de la face avant du cadre avant,
    • au moins une paire de pistes portées par l'outil, chacune d'orientation horizontale, qui sont alignées transversalement au droit des galets d'articulation, qui s'étendent sensiblement à partir d'une face arrière de l'outil, qui comportent chacune une rampe d'introduction inclinée destinée à faciliter l'introduction du galet d'articulation dans la piste associée et qui comportent chacune une butée mécanique pour le galet d'articulation associé,
  • la presse comporte des moyens de positionnement du cadre avant selon la hauteur initiale déterminée de repos de l'outil pour permettre l'accostage des galets d'articulation du cadre avant avec les pistes de l'outil,
  • les moyens de positionnement du cadre avant selon la hauteur initiale déterminée de repos de l'outil comportent au moins une paire de vérins verticaux, alignés transversalement et agencés à l'extrémité des rails du bâti, dont les extrémités portent des galets de soutien, et qui sont destinés à se déployer pour soulever le cadré avant de manière que leurs galets guident ledit cadre avant entre sa position horizontale arrière et sa position avant, puis à se rétracter une fois que les galets d'articulation du cadre avant ont été reçus dans les pistes de l'outil,
  • la presse comporte des moyens de motorisation interposés entre le cadre avant et le bâti, notamment un système de moteur et vis sans fin,
  • la presse comporte au moins un capteur de fin de course, qui est susceptible, lorsque les galets d'articulation du cadre avant sont reçus en butée dans les pistes associées, d'émettre une consigne de fin de course à l'attention d'une unité centrale de contrôle commandant l'arrêt des moyens de motorisation en translation du cadre avant et commandant la rétractation des vérins,
  • le capteur de fin de course est agencé sur la face d'extrémité libre du cadre avant,
  • les bandes transporteuses sont motorisées par un servomoteur de type pas à pas qui est commandé par l'unité centrale de contrôle et elles sont susceptibles d'entraîner la bande métallique au moins :
    • au début de la bobine, pour alimenter l'outil en bande métallique,
    • en fin de bobine, pour accompagner la fin de la bande de manière à réduire la perte de bande métallique.
According to other features of the invention:
  • the belt support table comprises a frame, arranged longitudinally at a determined distance from the press tool, on which are received in longitudinal translation a front frame, of a length substantially equal to that of the frame, which comprises at least a conveyor and which is guided in translation on the frame, and a rear curtain, of a length substantially equal to that of the frame, which is connected to the front frame, and which are movable between:
    • a retracted position, corresponding to the compact storage position of the table, wherein the front frame occupies a rear horizontal position fully supported on the frame and wherein the rear curtain, held by the front frame, hangs behind the following frame a vertical position substantially perpendicular to the front frame,
    • an advanced position, corresponding to the working position of the table, in which the front frame docked the tool, its free front end being articulated on the tool around a transverse axis, its rear end junction with the rear curtain being supported on the frame, and the rear curtain being deployed on the frame substantially horizontally in the extension of the front frame,
  • the rear curtain is constituted by a cascade of parallel chains which are spaced transversely from each other and whose links are capable of fitting into each other when the rear curtain is deployed on the frame substantially horizontally in the extension of the front frame, to form a rigid surface, held between the front frame and the rear end of the frame, which is capable of allowing the sliding of the metal strip,
  • the front frame comprises a plurality of parallel longitudinal lines of rollers and the rear curtain comprises rollers arranged on either side of each of the links of its chains, to ensure the sliding of the metal strip,
  • the front frame comprises a plurality of parallel belt conveyors which are spaced from each other and which each consist of a magnetized and motorized conveyor belt, in particular:
    • a magnetized and motorized conveyor belt extending in the front frame between two adjacent caster lines, and / or
    • a magnetized and motorized conveyor belt which is mounted on jacks mounted on a carriage that can accompany the movements of the front frame.
  • the frame comprises at least two rails which receive rollers arranged under the front frame, for guiding the front frame in translation between the compact storage position and the extended working position of the table,
  • the free end of the front frame and the tool comprise complementary abutment means and transverse axis articulation which are intended, in the working position of the table, to cooperate with each other to articulate and allow vertical deflections of the front frame and rear curtain,
  • the complementary abutment and articulation means comprise:
    • at least one pair of transversely aligned hinge rollers which are carried by arms extending substantially horizontally from the front face of the front frame,
    • at least one pair of tracks carried by the tool, each of horizontal orientation, which are aligned transversely to the right of the hinge rollers, which extend substantially from a rear face of the tool, which each comprise an inclined introduction ramp intended to facilitate the introduction of the hinge roller into the associated track and which each comprise a mechanical stop for the associated hinge roller,
  • the press comprises means for positioning the front frame according to the determined initial height of rest of the tool to allow the docking of the hinge rollers of the front frame with the tracks of the tool,
  • the positioning means of the front frame according to the determined initial height of rest of the tool comprise at least one pair of vertical cylinders, aligned transversely and arranged at the end of the rails of the frame, the ends of which bear support rollers, and which are intended to be deployed to raise the front frame so that their rollers guide said front frame between its rear horizontal position and its forward position, and to retract once the front frame hinge rollers have been received in the tool tracks,
  • the press comprises motorization means interposed between the front frame and the frame, including a motor system and worm,
  • the press comprises at least one end-of-travel sensor, which is capable, when the hinge rollers of the front frame are received in abutment in the associated tracks, of emitting an end-of-travel instruction to the attention of a central control unit controlling the stopping of the drive means in translation of the front frame and controlling the retraction of the cylinders,
  • the limit switch is arranged on the free end face of the front frame,
  • the conveyor belts are motorized by a step-type servomotor which is controlled by the central control unit and they are capable of driving the metal strip at least:
    • at the beginning of the spool, to supply the tool with a metal band,
    • at the end of the spool, to accompany the end of the strip so as to reduce the loss of metal strip.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels :

  • la figure 1 est une vue de côté de l'ensemble d'une installation de presse selon l'invention représentée dans la position de compacte stockage de la table ;
  • la figure 2 est une vue de côté de l'ensemble d'une installation de presse selon l'invention représentée dans une position de la table intermédiaire entre sa position compacte de stockage et sa position déployée de travail ;
  • la figure 3 est une vue de côté de l'ensemble d'une installation de presse selon l'invention représentée dans la position de travail de la table ;
  • la figure 4 est une vue en perspective de la table représentée en position compacte de stockage ;
  • la figure 5 est une vue de côté de détail de moyens d'articulation et de butée de la table sur l'outil.
Other features and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:
  • the figure 1 is a side view of the assembly of a press installation according to the invention shown in the compact storage position of the table;
  • the figure 2 is a side view of the assembly of a press installation according to the invention shown in a position of the intermediate table between its compact storage position and its extended working position;
  • the figure 3 is a side view of the assembly of a press plant according to the invention shown in the working position of the table;
  • the figure 4 is a perspective view of the table shown in a compact storage position;
  • the figure 5 is a detailed side view of hinge and abutment means of the table on the tool.

Dans la description qui va suivre, des chiffres de référence identiques désignent des pièces identiques ou ayant des fonctions similaires.In the following description, like reference numerals designate like parts or having similar functions.

Par convention, les termes "avant", "arrière", "supérieur", "inférieur" désignent respectivement des éléments ou des positions orientés respectivement vers la gauche, la droite, le haut, ou le bas des figures 1 à 5.By convention, the terms "forward", "backward", "upper", "lower" respectively refer to elements or positions oriented to the left, right, top, or bottom, respectively. Figures 1 to 5 .

On a représenté sur les figures 1 à 3 l'ensemble d'une installation 10 de presse d'emboutissage et/ou de découpe d'un matériau métallique en bande (non représenté).We have shown on Figures 1 to 3 the assembly of a pressing press 10 and / or cutting a metal strip material (not shown).

De manière connue, l'installation 10 comporte au moins une presse 12 dont un châssis 14 porte au moins un outil 16, verticalement mobile suivant une direction "C", qui est destiné recevoir une bande métallique 17 introduite longitudinalement suivant la direction "A" pour la traiter par un procédé de découpe ou d'emboutissage. L'installation 10 comporte aussi au moins un support 18, agencé longitudinalement à proximité de la presse 12, qui est destiné à porter et à dérouler une bobine 19 qui est montée tournante au tour d'un axe "B" du support 18 et sur laquelle est enroulée la bande métallique 17 à traiter,In known manner, the installation 10 comprises at least one press 12, a frame 14 carries at least one tool 16, vertically movable in a direction "C", which is intended to receive a metal strip 17 introduced longitudinally along the direction "A" to treat it by a method of cutting or stamping. The installation 10 also comprises at least one support 18, arranged longitudinally close to the press 12, which is intended to carry and unroll a coil 19 which is rotatably mounted around an axis "B" of the support 18 and on which is wound the metal strip 17 to be treated,

Conformément à l'invention, la presse comporte une table 20 de support de bande, qui est reçue entre des montants 22 du châssis 14 et qui est interposée longitudinalement entre l'outil 16 et le support de bobine 18, et qui est destinée à supporter la bande métallique 17 pendant son traitement dans la presse, comme représenté à la figure 3. La table 20 comporte au moins au moins un convoyeur 24 de bande qui est susceptible d'alimenter l'outil 16 en bande métallique 17.According to the invention, the press comprises a web support table 20, which is received between uprights 22 of the frame 14 and which is interposed longitudinally between the tool 16 and the coil support 18, and which is intended to support the metal strip 17 during its treatment in the press, as shown in FIG. figure 3 . The table 20 comprises at least at least one belt conveyor 24 which is capable of supplying the tool 16 with a metal strip 17.

La table 20 est mobile entre une position compacte de stockage, représentée à la figure 1, dans laquelle elle est agencée en retrait de l'outil 16 pour permettre, par exemple, le changement d'outil 16 ou la maintenance dudit outil 16, et une position déployée de travail, représentée à la figure 3, dans laquelle elle accoste l'outil 16 suivant une hauteur initiale déterminée de repos de l'outil 16, puis accompagne l'outil 16 dans ses mouvements verticaux de direction "C" de manière à supporter la bande métallique 17 pendant son traitement dans la presse 12.The table 20 is movable between a compact storage position, shown in FIG. figure 1 , in which it is arranged recessed from the tool 16 to allow, for example, the tool change 16 or the maintenance of said tool 16, and a deployed working position, shown in FIG. figure 3 in which it lands the tool 16 at an initial height determined rest of the tool 16, then accompanies the tool 16 in its vertical movements direction "C" so as to support the metal strip 17 during its treatment in the press 12.

De manière non limitative de l'invention, l'outil 16 est de préférence monté sur un plateau mobile roulant 26, qui est susceptible de se déplacer en direction de la table 20 suivant une direction "E" parallèle à la direction "A" pour faciliter l'accessibilité à l'outil 16 une fois que la table 20 a été placée dans sa position compacte de stockage par l'opérateur en charge de la manipulation de l'installation 10 de presse.In a non-limiting manner of the invention, the tool 16 is preferably mounted on a mobile moving plate 26, which is able to move towards the table 20 in a direction "E" parallel to the direction "A" for facilitate accessibility to the tool 16 once the table 20 has been placed in its compact storage position by the operator in charge of handling the press installation.

Plus particulièrement, la table 20 de support de bande comporte un bâti 28, qui est agencé longitudinalement à une distance déterminée de l'outil 16 de la presse et qui est réalisé par exemple en construction mécanosoudée.More particularly, the web support table 20 comprises a frame 28, which is arranged longitudinally at a determined distance from the tool 16 of the press and which is made for example in a mechanically welded construction.

Sur ce bâti 28 sont reçus en translation longitudinale un cadre avant 30, d'une longueur sensiblement égale à celle du bâti 28, qui comporte au moins un convoyeur 24 et qui est guidé en translation sur le bâti 28, et un rideau arrière 32, qui présente une longueur sensiblement égale à celle du bâti 28 et qui est lié à l'arrière du cadre avant 30.On this frame 28 are received in longitudinal translation a front frame 30, of a length substantially equal to that of the frame 28, which comprises at least one conveyor 24 and which is guided in translation on the frame 28, and a rear curtain 32, which has a length substantially equal to that of the frame 28 and which is connected to the rear of the front frame 30.

Dans cette configuration, le cadre avant 30 et le rideau arrière 32 sont mobiles entre :

  • une position reculée, qui a été représentée à la figure 1, et qui correspond à la position compacte de stockage de la table 20, dans laquelle le cadre avant 30 occupe une position horizontale arrière en appui complet sur le bâti 28 et dans laquelle le rideau arrière 32, maintenu par le cadre avant 30, pend en arrière du bâti 28 suivant une position verticale sensiblement perpendiculaire au cadre avant 30,
  • une position avancée, qui a été représentée à la figure 3 et qui correspond à la position déployée de travail de la table 20, dans laquelle le cadre avant 30 accoste l'outil 16, son extrémité libre avant 34 étant articulée sur l'outil autour d'un axe "D" transversal, son extrémité arrière 35 de jonction avec le rideau arrière 32 étant en appui sur le bâti 28, et le rideau arrière 32 étant déployé sur le bâti 28 sensiblement horizontalement dans le prolongement du cadre avant 30.
In this configuration, the front frame 30 and the rear curtain 32 are movable between:
  • a remote position, which was represented at the figure 1 , and which corresponds to the compact storage position of the table 20, in which the front frame 30 occupies a rear horizontal position in full support on the frame 28 and in which the rear curtain 32, held by the front frame 30, hangs in rear of the frame 28 in a vertical position substantially perpendicular to the front frame 30,
  • an advanced position, which was represented at the figure 3 and which corresponds to the extended working position of the table 20, in which the front frame 30 abuts the tool 16, its free end before 34 being articulated on the tool around an axis "D" transverse, its rear end 35 of junction with the rear curtain 32 bearing on the frame 28, and the rear curtain 32 being deployed on the frame 28 substantially horizontally in the extension of the front frame 30.

Pour permettre le déploiement du rideau arrière 32 dans la position déployée de travail de la table 20, celui-ci est constitué d'une cascade de chaînes 36 parallèles qui sont espacées transversalement les unes des autres et dont les maillons 38 sont susceptible de s'emboîter les uns dans les autres lorsque le rideau arrière 32 est déployé sur le bâti 28 sensiblement horizontalement dans le prolongement du cadre avant 30, pour former une surface rigide, maintenue entre le cadre avant 30 et l'extrémité arrière 40 du bâti 28. De cette manière, le rideau arrière est susceptible de permettre le glissement de la bande métallique 17 sur ses chaînes 36 tout en en assurant le soutien. La surface rigide 31 ainsi constituée a été représentée à la figure 3.To allow the deployment of the rear curtain 32 in the extended working position of the table 20, it consists of a cascade of parallel chains 36 which are spaced transversely from each other and whose links 38 are capable of s' nesting in each other when the rear curtain 32 is deployed on the frame 28 substantially horizontally in the extension of the front frame 30, to form a rigid surface, held between the front frame 30 and the rear end 40 of the frame 28. this way, the rear curtain is likely to allow the sliding of the metal strip 17 on its chains 36 while providing support. The rigid surface 31 thus formed has been represented at figure 3 .

On remarquera que tous les moyens connus peuvent être utilisés pour permettre aux maillons 38 de s'emboîter les uns dans les autres. Toutefois, dans le mode de réalisation préféré de l'invention, et comme l'illustre la figure 2, l'extrémité avant 38a de chaque maillon est complémentaire de l'extrémité arrière 38b du maillon 38 voisin, pour permettre un emboîtement des maillons dès qu'ils se retrouvent en position horizontaleNote that all known means can be used to allow the links 38 to fit into each other. However, in the preferred embodiment of the invention, and as illustrated by figure 2 , the front end 38a of each link is complementary to the rear end 38b of the adjacent link 38, to allow interlocking links as soon as they are in a horizontal position

Comme l'illustre la figure 4, le cadre avant 30 comporte une pluralité de lignes 42 longitudinales parallèles de roulettes 44 et le rideau arrière comporte des roulettes 46 agencées de part et d'autre de chacun des maillons de ses chaînes 32, pour assurer le glissement de la bande métallique 17.As illustrated by figure 4 , the front frame 30 comprises a plurality of parallel longitudinal lines 42 of rollers 44 and the rear curtain comprises rollers 46 arranged on either side of each of the links of its chains 32, to ensure the sliding of the metal strip 17.

La presse 12 comporte des moyens de motorisation interposés entre le cadre avant 30 et le bâti 28. A cet effet, tous les moyens connus peuvent être utilisés. Toutefois, dans le mode de réalisation préféré de l'invention, ces moyens de motorisation comportent un système de moteur et vis sans fin. Ainsi, à titre d'exemple un moteur 68, solidaire du châssis14, entraîne une vis sans fin 70 qui reçoit une patte 72 solidaire du cadre avant 30.The press 12 comprises motorization means interposed between the front frame 30 and the frame 28. For this purpose, all the known means can be used. However, in the preferred embodiment of the invention, these motorization means comprise a motor system and worm. So, as a for example a motor 68, integral with the frame 14, drives a worm 70 which receives a tab 72 integral with the front frame 30.

Par ailleurs, comme l'illustrent les figures 1 à 3, la table 20 comporte une pluralité de convoyeurs de bande parallèles qui sont espacés les uns des autres et qui sont constitués chacun d'une bande transporteuse aimantée et motorisée. Comme l'illustre la figure 4, il peut s'agir de convoyeurs 24a s'étendant dans le cadre 30 entre deux lignes 42 de roulettes 44 voisines, et/ou il peut s'agir, comme représenté aux figures 1 à 3, de convoyeurs 24b s'étendant au dessus du cadre 30.Moreover, as illustrated by Figures 1 to 3 , the table 20 comprises a plurality of parallel band conveyors which are spaced apart from each other and which each consist of a magnetized and motorized conveyor belt. As illustrated by figure 4 they may be conveyors 24a extending in the frame 30 between two lines 42 of adjacent rollers 44, and / or it may be, as shown in FIGS. Figures 1 to 3 of conveyors 24b extending above the frame 30.

Dans le cas selon lequel le convoyeur est un convoyeur 24b s'étendant au dessus du cadre 30, la bande 17 est amenée à être prise entre le convoyeur 24b et les roulettes 44 du cadre 30, et de ce fait le convoyeur 24b est monté verticalement mobile à l'extrémité de vérins 48 qui sont eux-mêmes montés sur un chariot 49 monté mobile longitudinalement sur le châssis 14, de manière à permettre l'introduction puis l'acheminement de la bande métallique 17. Ainsi, le chariot 49 peut par exemple être mû par un système à moteur et vis sans fin, et à cet effet il comporte des cavaliers 51 qui sont traversés par une vis sans fin 53 mue en rotation par un moteur 55 solidaire du châssis 22. De la sorte, les vérins 48 sont susceptibles d'accompagner les mouvements longitudinaux du cadre avant 30.In the case in which the conveyor is a conveyor 24b extending above the frame 30, the strip 17 is made to be gripped between the conveyor 24b and the rollers 44 of the frame 30, and thereby the conveyor 24b is mounted vertically mobile end cylinders 48 which are themselves mounted on a carriage 49 mounted longitudinally movable on the frame 14, so as to allow the introduction and the routing of the metal strip 17. Thus, the carriage 49 can by example be driven by a system with motor and worm, and for this purpose it comprises riders 51 which are traversed by a worm 53 rotated by a motor 55 integral with the frame 22. In this way, the cylinders 48 are likely to accompany the longitudinal movements of the front frame 30.

Pour assurer le guidage en translation du cadre avant 30 entre la position compacte de stockage ou déployée de travail de la table 20, le bâti 28 comporte au moins deux rails 47 qui reçoivent des galets 50 agencés sous le cadre avant 30.To guiding the front frame 30 in translation between the compact storage or deployed working position of the table 20, the frame 28 comprises at least two rails 47 which receive rollers 50 arranged under the front frame 30.

Pour assurer l'articulation du cadre avant 30 sur l'outil 16, l'extrémité libre 34 du cadre avant 30 et l'outil 16 comportent des moyens complémentaires de butée et d'articulation d'axe transversal qui sont destinés, dans la position de travail de la table 20, à coopérer l'un avec l'autre pour articuler et permettre les débattements verticaux du cadre avant 30 et du rideau arrière 32.To ensure the articulation of the front frame 30 on the tool 16, the free end 34 of the front frame 30 and the tool 16 comprise complementary abutment and transverse axis articulation means which are intended, in the position working of the table 20, to cooperate with each other to articulate and allow the vertical deflections of the front frame 30 and the rear curtain 32.

Plus particulièrement, comme l'illustre dans le détail la figure 5, ces moyens complémentaires de butée et d'articulation comportent :

  • au moins une paire de galets 52 d'articulation, alignés transversalement, qui sont portés par des bras 54 s'étendant sensiblement horizontalement à partir de la face avant 34 du cadre avant 30,
  • au moins une paire de pistes 56 portées par l'outil 16, chacune d'orientation horizontale, qui sont alignées transversalement au droit des galets 52 d'articulation, qui s'étendent sensiblement à partir d'une face arrière 58 de l'outil 16, qui comportent chacune une rampe 60 d'introduction inclinée destinée à faciliter l'introduction du galet 52 d'articulation dans la piste 56 associée et qui comportent chacune une butée 62 mécanique pour le galet 52 d'articulation associé.
In particular, as illustrated in detail in the figure 5 these complementary abutment and articulation means comprise:
  • at least one pair of transversely aligned articulation rollers 52 which are carried by arms 54 extending substantially horizontally from the front face 34 of the front frame 30,
  • at least one pair of tracks 56 carried by the tool 16, each of horizontal orientation, which are aligned transversely to the right of the hinge rollers 52, which extend substantially from a rear face 58 of the tool 16, which each comprise an inclined introduction ramp 60 intended to facilitate the introduction of the hinge roller 52 into the associated track 56 and which each comprise a mechanical stop 62 for the associated hinge roller 52.

A titre d'exemple, et de façon non limitative de l'invention, les pistes 56 et la rampe 60 peuvent être portées par un boîtier 75 qui est fixé sur l'outil 16.By way of example, and in a nonlimiting manner of the invention, the tracks 56 and the ramp 60 may be carried by a housing 75 which is fixed on the tool 16.

La hauteur initiale de repos de l'outil selon laquelle le cadre avant 30 accoste l'outil 16 pouvant varier selon le type d'outil 16 utilisé, il est par ailleurs nécessaire de permettre aux galets 52 d'articulation d'accoster les rampes 60 menant aux pistes 56 suivant une hauteur réglable.The initial height of rest of the tool according to which the front frame 30 hoists the tool 16 may vary according to the type of tool 16 used, it is also necessary to allow the hinge rollers 52 to dock the ramps 60 leading to the tracks 56 according to an adjustable height.

A cet effet, la presse comporte des moyens de positionnement du cadre avant 30 selon la hauteur initiale déterminée de repos de l'outil 16 pour permettre l'accostage des galets 52 d'articulation du cadre avant 30 avec les pistes 56 de l'outil 16.For this purpose, the press comprises means for positioning the front frame 30 according to the determined initial height of rest of the tool 16 to allow the docking wheels 52 of articulation of the front frame 30 with the tracks 56 of the tool 16.

A cet effet, les moyens de positionnement du cadre avant 30 selon la hauteur initiale déterminée de repos de l'outil 16 comportent une paire de vérins 64 verticaux, alignés transversalement et agencés à proximité de l'extrémité des rails 47 du bâti 28, dont les extrémités portent des galets 66 de soutien, et qui sont destinés à se déployer pour soulever le cadre avant 30 de manière que leurs galets guident ledit cadre avant 30 entre sa position horizontale arrière de la figure 1 et sa position avant de la figure 3, puis à se rétracter une fois que les galets 52 d'articulation du cadre avant ont été reçus dans les pistes 56 de l'outil 16.For this purpose, the positioning means of the front frame 30 according to the determined initial height of rest of the tool 16 comprise a pair of vertical cylinders 64, transversely aligned and arranged near the end of the rails 47 of the frame 28, of which the ends bear rollers 66 of support, and which are intended to be deployed to lift the frame before 30 so that their rollers guide said front frame 30 between its rear horizontal position of the figure 1 and his position before the figure 3 , then to retract once the rollers 52 of articulation of the front frame have been received in the tracks 56 of the tool 16.

Pour déterminer l'arrêt du cadre avant 30 lors de sa mise en position de travail, la presse 12 comporte au moins un capteur 74 de fin de course, qui est susceptible, lorsque les galets 52 d'articulation du cadre avant sont reçus en butée dans les pistes 56 associées, d'émettre une consigne de fin de course à l'attention d'une unité centrale de contrôle (non représentée) commandant l'arrêt du moteur 68 constituant les moyens de motorisation en translation du cadre 30 avant et commandant la rétractation des vérins 64.To determine the stop of the front frame 30 when it is placed in the working position, the press 12 comprises at least one end-of-travel sensor 74, which is capable, when the front frame hinge rollers 52 are received in abutment in the associated tracks 56, to issue an end of travel instruction to the attention of a central control unit (not shown) controlling the stopping of the engine 68 constituting the drive means in translation of the front frame 30 and the commander the retraction of the cylinders 64.

De préférence, comme l'illustre la figure 5, le capteur 74 de fin de course est agencé à l'extrémité libre 34 du cadre avant 30. Le capteur est par exemple susceptible d'entrer en contact avec une face arrière 77 d'un boîtier 75 comportant les pistes 56 pour commander l'arrêt du cadre avant 30 et la rétractation des vérins 64.Preferably, as illustrated by figure 5 , the end-of-stroke sensor 74 is arranged at the free end 34 of the front frame 30. The sensor is for example capable of coming into contact with a rear face 77 of a housing 75 comprising the tracks 56 for controlling the stopping the front frame 30 and retracting the cylinders 64.

Dans cette configuration, les bandes transporteuses 24a et/ou 24b sont motorisées par un servomoteur associé de type pas à pas qui est commandé par ladite unité centrale de contrôle pour entraîner plus particulièrement la bande métallique 17 au moins :

  • au début de la bobine, pour alimenter l'outil 16 en bande métallique 17,
  • en fin de bobine, pour accompagner la fin de la bande de manière à réduire la perte de bande métallique 17.
In this configuration, the conveyor belts 24a and / or 24b are motorized by an associated step-type servomotor which is controlled by said central control unit to drive more particularly the metal strip 17 at least:
  • at the beginning of the spool, to feed the tool 16 in a metal strip 17,
  • at the end of the coil, to accompany the end of the strip so as to reduce the loss of metal strip 17.

L'invention permet donc ainsi d'éviter les déformations de la bande en cours de fabrication, mais aussi de faciliter son introduction dans l'outil 16 et de minimiser les pertes de matériau métallique en fin de bande.The invention thus makes it possible to avoid deformations of the strip during manufacture, but also to facilitate its introduction into the tool 16 and to minimize losses of metallic material at the end of the strip.

Claims (14)

  1. Press installation (10) for pressing and/or cutting a metal strip, of the type that includes at least one press (12), a chassis (14) of which carries at least one vertically mobile tool (16) that is intended to receive a metal strip (17) introduced longitudinally to process it, and at least one support (28) arranged longitudinally in the proximity of the press (12) that is intended to support and to pay out a spool (19) on which the metal strip (17) to be processed is wound,
    characterized in that the press (12) includes a strip support table (20) that is received between uprights (22) of the chassis (14) and is disposed longitudinally between the tool (16) and the spool support (18), at least one strip conveyor (24) of which is adapted to feed the tool (16) with metal strip (17), and that is mobile between:
    - a compact storage position in which it is retracted from the tool (16) in particular to enable changing of the tool (16), and
    - a deployed working position in which it comes alongside the tool (16) at a particular initial rest height of the tool (16), and then accompanies the tool (16) as it moves vertically to support the metal strip (17) while it is processed in the press (12).
  2. Press installation (10) according to Claim 1, characterized in that the strip support table (20) includes a frame (28) arranged longitudinally at a particular distance from the tool (16) of the press (12), on which are received in longitudinal translation a front frame (30) the length of which is substantially equal to that of the frame (28), which includes at least one conveyor (24, 24a, 24b) and which is guided in translation on the frame (28), and a rear curtain (32), the length of which is substantially equal to that of the frame (28), which is connected to the front frame (30), and which are mobile between:
    - a retracted position, corresponding to the compact storage position of the table (20), in which the front frame (30) occupies a rear horizontal position bearing completely on the frame (28) and in which the rear curtain (32), held by the front frame (30), hangs behind the frame (28) in a vertical position substantially perpendicular to the front frame (30),
    - an advanced position, corresponding to the deployed working position of the table (20), in which the front frame (30) comes alongside the tool (16), its front free end being articulated to the tool (16) about a transverse axis (D), its rear end (35) joined to the rear curtain (32) bearing on the frame (28), and the rear curtain (32) being deployed on the frame (28) substantially horizontally in line with the front frame (30).
  3. Press installation (10) according to the preceding claim, characterized in that the rear curtain (32) consists of a cascade of parallel chains (36) that are spaced transversely from each other and the links (38) of which adapted to nest one within the other when the rear curtain (32) is deployed on the frame (28) substantially horizontally in line with the front frame (30), to form a rigid surface, held between the front frame and the rear end (40) of the frame (28), which is adapted to allow sliding of the metal strip (17).
  4. Press installation (10) according to either of Claims 2 or 3, characterized in that the front frame (30) includes a plurality of parallel longitudinal lines (42) of wheels (44) and in that the rear curtain (32) includes wheels (46) arranged on either side of each of the links (38) of its chains (36) to provide for sliding of the metal strip (17).
  5. Installation (10) according to any of Claims 2 to 4, characterized in that the front frame (30) includes a plurality of parallel strip conveyors (24, 24a, 24b) that are spaced from each other and each of which consists of a magnetized and motorized conveyor belt, in particular:
    - a magnetized and motorized conveyor belt (24a) that extends in the front frame (30) between two lines of adjacent wheels, and/or
    - a magnetized and motorized conveyor belt (24b) that is mounted on actuators (48) mounted on a carriage (49) adapted to accompany movement of the front frame (30).
  6. Press installation (10) according to any of Claims 2 to 5, characterized in that the frame (28) includes at least two rails (47) that receive rollers (50) arranged under the front frame (30) to guide translation of the front frame (30) between the compact storage position and the deployed working position of the table (20).
  7. Press installation (10) according to any of Claims 2 to 6, characterized in that the free end (34) of the front frame (30) and the tool (16) include complementary abutment and articulation means with transverse axis (D) that are adapted, in the working position of the table (20), to cooperate with each other to articulate and allow vertical relative movement of the front frames (30) and the rear curtain (32).
  8. Press installation (10) according to the preceding claim, characterized in that the complementary abutment and articulation means include:
    - at least one pair of articulation rollers (52), aligned transversely, carried by arms (54) extending substantially horizontally from the front face (34) of the front frame (30),
    - at least one pair of tracks (56) carried by the tool (16), each oriented horizontally, which are aligned transversely in line with the articulation rollers (52), which extend substantially from a rear face (58) of the tool (16), which each include an inclined introduction ramp (60) to facilitate introduction of the articulation roller (52) into the associated track (56) and which each include a mechanical abutment (62) for the associated articulation roller (52).
  9. Press installation (10) according to any of Claims 2 to 8, characterized in that the press (12) includes means for positioning the front frame (30) according to the particular initial rest height of the tool (16) to enable the articulation rollers (52) of the front frame (30) to come alongside the tracks (56) of the tool.
  10. Press installation (10) according to the preceding claim, characterized in that the means for positioning the front frame (30) according to the particular initial rest height of the tool include at least one pair of vertical actuators (64), aligned transversely and arranged in the proximity of the end of the rails (47) of the frame (28), the ends of which carry support rollers (66), and which are adapted to be deployed to raise the front frame (30) so that their rollers (66) guide said front frame between its horizontal rear position and its front position, and then to be retracted once the articulation rollers (52) of the front frame (30) have been received into the tracks (56) of the tool (16).
  11. Press installation (10) according to any of Claims 2 to 10, characterized in that the press (12) includes motorization means disposed between the front frame and the frame, in particular a system comprising a motor (68) and a lead screw (70).
  12. Press installation (10) according to the preceding claim, in conjunction with Claim 8, characterized in that the press (12) includes at least one end of stroke sensor (74) that is adapted, when the articulation rollers (52) of the front frame are received in and abut in the associated tracks (60), to send an end of stroke instruction for the attention of a central control unit commanding stopping of the translation motorization means of the front frame (30) and commanding retraction of the actuators (64).
  13. Press installation (10) according to the preceding claim, characterized in that the end of stroke sensor (74) is arranged on the free end face (34) of the front frame (30).
  14. Press installation (10) according to either of Claims 12 or 13 in conjunction with Claim 5, characterized in that the conveyor belts (24, 24a, 24b) are motorized by a stepper servomotor that is controlled by the central control unit and in that they are adapted to drive the metal strip (17) at least:
    - at the start of the spool (19), to feed the tool (16) with metal strip (17),
    - at the end of the spool (19), to accompany the end of the strip (17) to reduce wastage of the metal strip (17).
EP20030292750 2002-11-27 2003-11-04 Press plant with a strip supporting table Expired - Lifetime EP1424148B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0214850A FR2847510B1 (en) 2002-11-27 2002-11-27 PRESS INSTALLATION COMPRISING A BAND SUPPORT TABLE
FR0214850 2002-11-27

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EP1424148A1 EP1424148A1 (en) 2004-06-02
EP1424148B1 true EP1424148B1 (en) 2010-01-27

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DE (1) DE60331128D1 (en)
ES (1) ES2337458T3 (en)
FR (1) FR2847510B1 (en)

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JP6691362B2 (en) * 2015-08-28 2020-04-28 コマツ産機株式会社 Coil material conveying device, press system, and coil material conveying method
CN114515793B (en) * 2022-01-24 2024-03-26 佛山晖泽换热设备有限公司 Tube expander

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GB802704A (en) * 1956-04-10 1958-10-08 Press Equipment Ltd New or improved means for controlling the working of strip material
US2908405A (en) * 1958-05-01 1959-10-13 Robert T Logan Mechanism for the operation of the transfer table of a press
DE1139069B (en) * 1960-08-16 1962-10-31 Continental Gummi Werke Ag Equipment for loading presses and similar machine tools
US4364254A (en) * 1980-09-08 1982-12-21 Tapco Products Company, Inc. Combined sheet bending brake, table and coil support
JPS60141342A (en) * 1983-12-28 1985-07-26 Orii Jidoki Seisakusho:Kk Two-dimensional feeder of coil material

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DE60331128D1 (en) 2010-03-18
FR2847510B1 (en) 2005-02-11
ES2337458T3 (en) 2010-04-26
EP1424148A1 (en) 2004-06-02
FR2847510A1 (en) 2004-05-28

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