EP0444169B1 - Tooling for folding press for air folding - Google Patents

Tooling for folding press for air folding Download PDF

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Publication number
EP0444169B1
EP0444169B1 EP90912757A EP90912757A EP0444169B1 EP 0444169 B1 EP0444169 B1 EP 0444169B1 EP 90912757 A EP90912757 A EP 90912757A EP 90912757 A EP90912757 A EP 90912757A EP 0444169 B1 EP0444169 B1 EP 0444169B1
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EP
European Patent Office
Prior art keywords
folding
dies
shims
tooling
driving device
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
EP90912757A
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German (de)
French (fr)
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EP0444169A1 (en
Inventor
Willem Dieperink
Claude Croisier
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Beyeler Raskin SA
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Beyeler Raskin SA
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Publication of EP0444169A1 publication Critical patent/EP0444169A1/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
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor
    • B21D5/0227—Length adjustment of the die
    • 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
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor

Definitions

  • the present invention relates to a tool for press brake for folding in air.
  • the displacement of the half-dies of the tool described in this document is carried out using an endless screw, arranged perpendicular to the folding plane and comprising a threaded part on the left and a threaded part on the right, these parts cooperating respectively with nuts integral with one and the other of the half-dies.
  • the half-dies are locked in position relative to the table by means of pairs of inclined shims, each of the shims of a couple being fixed respectively one on the half-matrix and the other on a traction connected to a drive device.
  • This tool has the drawback of requiring two separate devices for moving and blocking the half-dies, which makes the operation of modifying the complicated and imprecise matrix, the separate execution of the blocking being able in particular to modify the positioning of the half-matrices.
  • the object of the present invention is to propose a tool for a press brake comprising two half-dies making it possible to remedy the drawbacks of the tool described in this document DE-A1- 32 35 775.
  • the invention relates to a tool for press brake for folding in air as defined in claim 1.
  • the tool shown in Figures 1 to 5 is mounted on the table of the lower deck 22, the table having two parts 12, 12 ′ arranged on either side of the folding plane 23 defined by the movement of the edge of the end of the punch 3, 4.
  • Two half-dies 1, 1 ′ are arranged on the respective parts 12, 12 ′ of the table, on either side of the folding plane 23 and symmetrically with respect to this plane.
  • Each of the two half-dies has a vertical longitudinal face 24, 24 ′, these two said vertical faces being spaced from one another, so as to present a vertical space constituting the folding V.
  • Each of the two half-dies 1, 1 ′ is arranged on one of the corresponding parts 12, 12 ′ of the table so as to be able to slide laterally relative to these.
  • the tool includes a symmetrical actuation device for the displacement of each of the two half-dies.
  • This device comprises for each of the half-dies a plurality of pairs of inclined shims 9, 10, respectively 9 ′, 10 ′, arranged horizontally at the upper external part of the half-matrix 1, respectively 1 ′, covered by cover plates 8, respectively 8 ′.
  • the shims 9, respectively 9 ′ which can be considered as fixed shims, are fixed to the half-die 1, respectively 1 ′, using fixing devices 20, respectively 20 ′, for example by screwing.
  • the wedges 10, respectively 10 ′ which can be considered as mobile wedges, are fixed to a drawbar 11, respectively 11 ′, using fixing devices 21, respectively 21 ′, for example by screwing .
  • the respective ends of the drawbars 11 and 11 ′ are fixed on either side of a nut 13 secured to a ball screw 14, itself secured to a reducer worm gear 15, coupled to a DC motor 17, the assembly being mounted on a support 16.
  • the motor is connected to an incremental sensor 18 and is controlled by a programmable electronic device such as for example a digital control or a computer.
  • the inclined shims 10, 10 ′ When the drive system described above acts in traction on the bars 11, 11 ′, so as to move them to the left in FIG. 3, the inclined shims 10, 10 ′ also move to the left and impose a lateral movement of the shims 9, 9 ′ in the direction of the folding plane 23, bringing the two half-dies closer together and consequently reducing the width 7 of the folding V.
  • the inclined shims 10, 10 ′ move in the opposite direction and allow the two half-dies to move away from each other under the action of a means spacing, such as for example a curved spring steel blade 19 as shown in Figure 1, the longitudinal ends of said blade being fixed to each of the two half-dies, towards the bottom of the folding V. Said blade, by its spring action, exerts permanent pressure against the respective walls 24, 24 ′ of the half-dies 1, 1 ′, tending to open the folding V.
  • the blade 19 also has a sealing function intended to close the bottom of the folding V.
  • the spring steel blade 19 can be replaced by a device for driving the fixed blocks 9 by the mobile blocks 10 (respectively fixed blocks 9 ′ by the mobile blocks 10 ′), such as for example a arrangement of the shims with grooves for the longitudinal sliding of one shim relative to the other, or by any other drive device.
  • each of the half-dies can be made integral with the table using a screw 25.
  • FIG. 2 represents the tool of FIG. 1, programmed for the folding of a sheet 2 ′ of thinner thickness than that of sheet 2 shown in FIG. 1.
  • the punch 3, 4 has flanges 5, 5 ′ intended to cooperate with the upper surfaces 6, 6 ′ of the two half-dies so as to allow the making crushed folds (Figure 5).
  • the tool shown in Figures 1 to 5 comprises symmetrical half-dies, their movement being actuated by a device also symmetrical, driven by a single motor.
  • a device also symmetrical, driven by a single motor.
  • it can also be produced with two motors acting respectively on the movement of each of the two half-dies, or with a single motor acting only on the movement of only one of the half-dies, the other being fixed.
  • the device for actuating the movement of the half-dies described above could also be replaced by an external hydraulic device.
  • the tool can be actuated by a device comprising a plurality of pairs of inclined shims arranged in the center of the die, between the two half-dies, intended to actuate the opening of the die, the closing of the matrix being actuated by a lateral compression device of the two semi-dies acting hydraulically or mechanically.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Press Drives And Press Lines (AREA)
  • Forging (AREA)

Abstract

PCT No. PCT/CH90/00216 Sec. 371 Date May 10, 1991 Sec. 102(e) Date May 10, 1991 PCT Filed Sep. 11, 1990 PCT Pub. No. WO91/03332 PCT Pub. Date Mar. 21, 1991.A pair of female die parts are mounted on a table of a lower frame of a folding press for forming a folding groove. One of the female die parts is slidably adjustable on the table with respect to the other female die part by an adjusting device including pairs of first and second tapered shims. The first and second shims of each pair are slidably arranged with respect to each other. The first shims are coupled with the adjustable female die part and the second shims of each pair are coupled with an actuating member connected to a driving device for adjusting the position of the second shims with respect to the first shims.

Description

La présente invention concerne un outillage pour presse-plieuse pour pliage en l'air.The present invention relates to a tool for press brake for folding in air.

Lorsque l'on désire plier des tôles d'épaisseurs différentes avec une presse-plieuse comportant un outillage conventionnel, il est nécessaire d'effectuer un changement de matrice, lequel changement nécessite des moyens de manutention importants en matériel et en main-d'oeuvre, compte tenu de l'encombrement et du poids des matrices qui sont généralement utilisées. Tout changement de matrice nécessitant un nouveau réglage de la presse, le temps de réglage s'ajoute au temps de changement et implique des pertes de temps importantes. Le même problème se pose lorsqu'on désire modifier le rayon de pliage à obtenir.When it is desired to bend sheets of different thicknesses with a press brake comprising conventional tools, it is necessary to carry out a change of die, which change requires significant handling means in terms of material and labor. , taking into account the size and the weight of the dies which are generally used. Any change of die requiring a new adjustment of the press, the adjustment time is added to the change time and involves significant loss of time. The same problem arises when one wishes to modify the folding radius to be obtained.

Il a déjà été proposé de réaliser la matrice en deux demi-matrices disposées de part et d'autre du plan de pliage défini par le mouvement de l'arrête du poinçon de la presse et couplées avec des moyens d'actionnement destinés à rapprocher et éloigner les demi-matrices l'une de l'autre. Un tel outillage est décrit dans le document DE-A1-3235775.It has already been proposed to produce the die in two half-dies arranged on either side of the folding plane defined by the movement of the stop of the punch of the press and coupled with actuating means intended to bring the move the half dies away from each other. Such tools are described in document DE-A1-3235775.

Le déplacement des demi-matrices de l'outillage décrit dans ce document s'effectue à l'aide d'une vis sans fin, disposée perpendiculairement au plan de pliage et comportant une partie filetée à gauche et une partie filetée à droite, ces parties coopérant respectivement avec des écrous solidaires de l'une et de l'autre des demi-matrices. Le blocage en position des demi-matrices par rapport à la table s'effectue au moyen de couples de cales inclinées, chacune des cales d'un couple étant fixée respectivement l'une sur la demi-matrice et l'autre sur un organe de traction relié à un dispositif d'entraînement. Cet outillage présente l'inconvénient de nécessiter deux dispositifs distincts pour le déplacement et le blocage des demi-matrices, ce qui rend l'opération de modification de la matrice compliquée et peu précise, l'exécution séparée du blocage pouvant notamment modifier le positionnement des demi-matrices.The displacement of the half-dies of the tool described in this document is carried out using an endless screw, arranged perpendicular to the folding plane and comprising a threaded part on the left and a threaded part on the right, these parts cooperating respectively with nuts integral with one and the other of the half-dies. The half-dies are locked in position relative to the table by means of pairs of inclined shims, each of the shims of a couple being fixed respectively one on the half-matrix and the other on a traction connected to a drive device. This tool has the drawback of requiring two separate devices for moving and blocking the half-dies, which makes the operation of modifying the complicated and imprecise matrix, the separate execution of the blocking being able in particular to modify the positioning of the half-matrices.

Le but de la présente invention est de proposer un outillage pour presse-plieuse comportant deux demi-matrices permettant de remédier aux inconvénients de l'outillage décrit dans ce document DE-A1- 32 35 775.The object of the present invention is to propose a tool for a press brake comprising two half-dies making it possible to remedy the drawbacks of the tool described in this document DE-A1- 32 35 775.

A cet effet, l'invention concerne un outillage pour presse-plieuse pour pliage en l'air tel que défini à la revendication 1.To this end, the invention relates to a tool for press brake for folding in air as defined in claim 1.

D'autres caractéristiques importantes de l'outillage selon l'invention sont définies dans les revendications subordonnées à la revendication 1.Other important characteristics of the tool according to the invention are defined in the claims dependent on claim 1.

On comprendra bien l'invention à l'aide de la description qui suit d'un outillage pour presse-plieuse selon l'invention, donnée à titre d'exemple, et en se référant au dessin sur lequel

la fig. 1
est une coupe verticale de l'outillage,
la fig. 2
est une coupe verticale de l'outillage de la figure 1 programmé pour d'autres conditions de pliage que celles de la figure 1,
la fig. 3
est une vue de dessus du dispositif d'actionnement du déplacement des deux demi-matrices,
la fig. 4
est une vue de côté du dispositif de la figure 3, et
la fig. 5
est une coupe verticale partielle de l'outillage de la figure 1 programmé pour la réalisation de plis écrasés.
The invention will be clearly understood with the aid of the following description of a tool for a press brake according to the invention, given by way of example, and with reference to the drawing in which
fig. 1
is a vertical section of the tool,
fig. 2
is a vertical section of the tool of FIG. 1 programmed for other folding conditions than those of FIG. 1,
fig. 3
is a top view of the device for actuating the displacement of the two half-dies,
fig. 4
is a side view of the device of FIG. 3, and
fig. 5
is a partial vertical section of the tool of Figure 1 programmed for the production of crushed folds.

L'outillage représenté sur les figures 1 à 5 est monté sur la table du tablier inférieur 22, la table comportant deux parties 12, 12′ disposées de part et d'autre du plan de pliage 23 défini par le mouvement de l'arête de l'extrémité du poinçon 3, 4. Deux demi-matrices 1, 1′ sont disposées sur les parties 12, 12′ respectives de la table, de part et d'autre du plan de pliage 23 et symétriquement par rapport à ce plan. Chacune des deux demi-matrices comporte une face longitudinale verticale 24, 24′, ces deux dites faces verticales étant espacées l'une de l'autre, de façon à présenter un espace vertical constituant le V de pliage. Chacune des deux demi-matrices 1, 1′ est disposée sur l'une des parties correspondantes 12, 12′ de la table de façon à pouvoir coulisser latéralement par rapport à celles-ci.The tool shown in Figures 1 to 5 is mounted on the table of the lower deck 22, the table having two parts 12, 12 ′ arranged on either side of the folding plane 23 defined by the movement of the edge of the end of the punch 3, 4. Two half-dies 1, 1 ′ are arranged on the respective parts 12, 12 ′ of the table, on either side of the folding plane 23 and symmetrically with respect to this plane. Each of the two half-dies has a vertical longitudinal face 24, 24 ′, these two said vertical faces being spaced from one another, so as to present a vertical space constituting the folding V. Each of the two half-dies 1, 1 ′ is arranged on one of the corresponding parts 12, 12 ′ of the table so as to be able to slide laterally relative to these.

L'outillage comprend un dispositif d'actionnement symétrique du déplacement de chacune des deux demi-matrices. Ce dispositif comporte pour chacune des demi-matrices une pluralité de couples de cales inclinées 9, 10, respectivement 9′, 10′, disposées horizontalement à la partie supérieure extérieure de la demi-matrice 1, respectivement 1′, recouvertes par des plaques de couverture 8, respectivement 8′. Les cales 9, respectivement 9′, que l'on peut considérer comme des cales fixes sont fixées sur la demi-matrice 1, respectivement 1′, à l'aide de dispositifs de fixation 20, respectivement 20′, par exemple par vissage. Les cales 10, respectivement 10′, que l'on peut considérer comme des cales mobiles, sont fixées sur une barre de traction 11, respectivement 11′, à l'aide de dispositifs de fixation 21, respectivement 21′, par exemple par vissage. Comme représenté sur les figures 3 et 4, les extrémités respectives des barres de traction 11 et 11′ sont fixées de part et d'autre d'un écrou 13 solidaire d'une vis à billes 14, elle-même solidaire d'un réducteur à vis sans fin 15, accouplé à un moteur à courant continu 17, l'ensemble étant monté sur un support 16. Le moteur est connecté à un capteur incrémental 18 et est commandé par un dispositif électronique programmable tel que par exemple une commande numérique ou un ordinateur.The tool includes a symmetrical actuation device for the displacement of each of the two half-dies. This device comprises for each of the half-dies a plurality of pairs of inclined shims 9, 10, respectively 9 ′, 10 ′, arranged horizontally at the upper external part of the half-matrix 1, respectively 1 ′, covered by cover plates 8, respectively 8 ′. The shims 9, respectively 9 ′, which can be considered as fixed shims, are fixed to the half-die 1, respectively 1 ′, using fixing devices 20, respectively 20 ′, for example by screwing. The wedges 10, respectively 10 ′, which can be considered as mobile wedges, are fixed to a drawbar 11, respectively 11 ′, using fixing devices 21, respectively 21 ′, for example by screwing . As shown in FIGS. 3 and 4, the respective ends of the drawbars 11 and 11 ′ are fixed on either side of a nut 13 secured to a ball screw 14, itself secured to a reducer worm gear 15, coupled to a DC motor 17, the assembly being mounted on a support 16. The motor is connected to an incremental sensor 18 and is controlled by a programmable electronic device such as for example a digital control or a computer.

Lorsque le système d'entraînement décrit ci-dessus agit en traction sur les barres 11, 11′, de façon à les déplacer vers la gauche sur la figure 3, les cales inclinées 10, 10′ se déplacent également vers la gauche et imposent un déplacement latéral des cales 9, 9′ dans la direction du plan de pliage 23, entraînant un rapprochement des deux demi-matrices et par conséquent une diminution de la largeur 7 du V de pliage. Lorsque le système d'entraînement agit en sens contraire, les cales inclinées 10, 10′ se déplacent dans le sens contraire et permettent aux deux demi-matrices de s'écarter l'une de l'autre sous l'action d'un moyen d'écartement, comme par exemple une lame en acier ressort courbée 19 telle que repésentée à la figure 1, les extrémités longitudinales de ladite lame étant fixées à chacune des deux demi-matrices, vers le fond du V de pliage. Ladite lame, par son action de ressort, exerce une pression permanente contre les parois respectives 24, 24′ des demi-matrices 1, 1′, tendant à l'ouverture du V de pliage. La lame 19 a aussi une fonction d'étanchéité destinée à fermer le fond du V de pliage.When the drive system described above acts in traction on the bars 11, 11 ′, so as to move them to the left in FIG. 3, the inclined shims 10, 10 ′ also move to the left and impose a lateral movement of the shims 9, 9 ′ in the direction of the folding plane 23, bringing the two half-dies closer together and consequently reducing the width 7 of the folding V. When the drive system acts in the opposite direction, the inclined shims 10, 10 ′ move in the opposite direction and allow the two half-dies to move away from each other under the action of a means spacing, such as for example a curved spring steel blade 19 as shown in Figure 1, the longitudinal ends of said blade being fixed to each of the two half-dies, towards the bottom of the folding V. Said blade, by its spring action, exerts permanent pressure against the respective walls 24, 24 ′ of the half-dies 1, 1 ′, tending to open the folding V. The blade 19 also has a sealing function intended to close the bottom of the folding V.

Selon une variante d'exécution, la lame en acier ressort 19 peut être remplacée par un dispositif d'entraînement des cales fixes 9 par les cales mobiles 10 (respectivement des cales fixes 9′ par les cales mobiles 10′), comme par exemple un agencement des cales avec des rainures pour le coulissement longitudinal d'une cale par rapport à l'autre, ou par tout autre dispositif d'entraînement.According to an alternative embodiment, the spring steel blade 19 can be replaced by a device for driving the fixed blocks 9 by the mobile blocks 10 (respectively fixed blocks 9 ′ by the mobile blocks 10 ′), such as for example a arrangement of the shims with grooves for the longitudinal sliding of one shim relative to the other, or by any other drive device.

Le coulissement des demi-matrices 1, 1′ sur les parties 12, 12′ de la table peut être obtenu par exemple, par simple interposition d'un lubrifiant entre les surfaces inférieures planes des demi-matrices et les surfaces supérieures planes des parties 12, 12′ de la table. Afin d'éviter le basculement des demi-matrices lors du pliage pour de petites ouvertures du V de pliage, chacune des demi-matrices peut être rendue solidaire de la table à l'aide d'une vis 25.The sliding of the half-dies 1, 1 ′ on the parts 12, 12 ′ of the table can be obtained for example, by simple interposition of a lubricant between the flat lower surfaces of the half-dies and the flat upper surfaces of the parts 12 , 12 ′ from the table. In order to avoid the tilting of the half-dies during folding for small openings of the folding V, each of the half-dies can be made integral with the table using a screw 25.

La figure 2 représente l'outillage de la figure 1, programmé pour le pliage d'une tôle 2′ de plus faible épaisseur que celle de la tôle 2 représentée à la figure 1.FIG. 2 represents the tool of FIG. 1, programmed for the folding of a sheet 2 ′ of thinner thickness than that of sheet 2 shown in FIG. 1.

Selon un mode d'exécution préférentiel du poinçon, tel que représenté sur les figures, le poinçon 3, 4 comporte des rebords 5, 5′ destinés à coopérer avec les surfaces supérieures 6, 6′ des deux demi-matrices de façon à permettre la réalisation de plis écrasés (figure 5).According to a preferred embodiment of the punch, as shown in the figures, the punch 3, 4 has flanges 5, 5 ′ intended to cooperate with the upper surfaces 6, 6 ′ of the two half-dies so as to allow the making crushed folds (Figure 5).

L'outillage représenté sur les figures 1 à 5 comporte des demi-matrices symétriques, leur déplacement étant actionné par un dispositif également symétrique, entraîné par un moteur unique. Bien entendu il peut également être réalisé avec deux moteurs agissant respectivement sur le déplacement de chacune des deux demi-matrices, ou avec un seul moteur n'agissant que sur le déplacement d'une seule des demi-matrices, l'autre étant fixe.The tool shown in Figures 1 to 5 comprises symmetrical half-dies, their movement being actuated by a device also symmetrical, driven by a single motor. Of course it can also be produced with two motors acting respectively on the movement of each of the two half-dies, or with a single motor acting only on the movement of only one of the half-dies, the other being fixed.

Le dispositif d'actionnement du mouvement des demi-matrices décrit ci-dessus pourrait également être remplacé par un dispositif hydraulique extérieur.The device for actuating the movement of the half-dies described above could also be replaced by an external hydraulic device.

Selon une variante d'exécution l'outillage peut être actionné par un dispositif comportant une pluralité de couples de cales inclinées disposé au centre de la matrice, entre les deux demi-matrices, destiné à actionner l'ouverture de la matrice, la fermeture de la matrice étant actionnée par un dispositif de compression latéral des deux demi-matrices agissant hydrauliquement ou mécaniquement.According to an alternative embodiment, the tool can be actuated by a device comprising a plurality of pairs of inclined shims arranged in the center of the die, between the two half-dies, intended to actuate the opening of the die, the closing of the matrix being actuated by a lateral compression device of the two semi-dies acting hydraulically or mechanically.

Claims (6)

  1. Tooling for folding press for air folding comprising a die including two half-dies (1, 1′) arranged on either side of the folding plane (23) defined by the movement of the edge of the male die (3, 4), each of the half-dies (1, 1′) being mounted so as to be capable of sliding with respect to the table (12, 12′) of the lower frame (22) of the press in a direction perpendicular to the folding plane (23), each of the half-dies (1, 1′) cooperating with a device comprising a plurality of pairs of inclined shims (9, 10; 9′, 10′) provided to operate the moving of the half-dies, each of the shims of a pair being fixed respectively the one (9, 9′) on the half-die and the other (10, 10′) on a pulling member (11, 11′) connected to a driving device, the whole being arranged so that the closing of the folding V and the locking of the half-dies is produced by said pulling member, the tooling further comprising separating means (19) provided to produce the opening of the folding V by moving apart the two half-dies.
  2. Tooling according to claim 1, characterized in that the separating means comprise a spring steel blade (19) arranged in the bottom of the folding V and the longitudinal sides of which are solid with each of the two half-dies, respectively.
  3. Tooling according to one of claims 1 or 2, characterized in that the pulling member comprises two longitudinal bars (11; 11′), one of the ends of each of said bars being fixed on a common driving device (13).
  4. Tooling according to claim 3, characterized in that the driving device comprises a screw-nut (13), on either side of which are fixed said ends of each of the longitudinal bars, said screw-nut being mounted on a screw (14) solid with a reduction device (15) coupled to a motor (17).
  5. Tooling according to one of the preceding claims, characterized in that it comprises a male die (3, 4) having edges (5, 5′) provided to cooperate respectively with the upper edges (6, 6′) of each of the two half-dies, so as to allow crushed folding.
  6. Tooling according to one of the preceding claims, characterized in that the driving device of the pulling member is an automatic driving device (11, 13, 14, 15, 17) controlled by a programmable electronic device.
EP90912757A 1989-09-11 1990-09-11 Tooling for folding press for air folding Expired - Lifetime EP0444169B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH3297/89 1989-09-11
CH3297/89A CH680772A5 (en) 1989-09-11 1989-09-11
PCT/CH1990/000216 WO1991003332A1 (en) 1989-09-11 1990-09-11 Tooling for folding press for air folding

Publications (2)

Publication Number Publication Date
EP0444169A1 EP0444169A1 (en) 1991-09-04
EP0444169B1 true EP0444169B1 (en) 1994-06-01

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EP90912757A Expired - Lifetime EP0444169B1 (en) 1989-09-11 1990-09-11 Tooling for folding press for air folding

Country Status (7)

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US (1) US5305659A (en)
EP (1) EP0444169B1 (en)
JP (1) JPH04501537A (en)
AT (1) ATE106290T1 (en)
CH (1) CH680772A5 (en)
DE (1) DE69009446T2 (en)
WO (1) WO1991003332A1 (en)

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SE395127B (en) * 1974-03-22 1977-08-01 Volvo Ab DEVICE FOR MOUNTING CHASSIS DETAILS ON A CAR BODY
SE503594C2 (en) * 1992-10-26 1996-07-15 Nya Ursvikens Mekaniska Verkst Device for sub-tools
FR2741288B1 (en) * 1995-11-21 1997-12-26 Mas Barral Atel Const Du ADJUSTABLE TOOLS FOR BENDING SHEETS
US6018979A (en) * 1998-07-08 2000-02-01 Acro Industries, Inc. Tool working height adjustment for press brake
SE0001294D0 (en) * 2000-04-07 2000-04-07 Pullmax Ursviken Ab Sub-tool for edge press
ITAN20010039A1 (en) 2001-08-29 2003-03-01 Fabrizio Paoletti ADJUSTABLE BENDING DIE, IN PARTICULAR FOR BENDING PRESSES
US6450004B1 (en) * 2001-10-09 2002-09-17 Douglas E. Edmondson Press brake punch holder
US6874346B1 (en) * 2004-03-22 2005-04-05 Phillip C. Faymonville Multi-form die base with rotatable anvils having alternative forming surfaces
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ITMI20101953A1 (en) * 2010-10-22 2012-04-23 Rolleri S P A ADJUSTABLE MATRIX FOR BENDING PRESSES
USD807933S1 (en) 2015-08-14 2018-01-16 Henri Emil Louis Maurice Zermatten Tool for a press brake
ZA201605420B (en) * 2015-08-14 2017-09-27 Henri Emil Louis Maurice Zermatten Tool for a press brake
CN106964681B (en) * 2017-05-19 2019-04-23 国家电网公司 The manual angle steel stamping device of punching press angle adjustable
CN113523112B (en) * 2021-07-15 2023-08-25 安徽联盟模具工业股份有限公司 Intelligent opening-adjusting indentation-free bending forming lower die and opening adjusting method
FI130847B1 (en) * 2021-11-05 2024-04-23 Aliko Oy Ltd Bottom tool of a press brake and a press brake

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EP2674231A1 (en) * 2012-06-14 2013-12-18 Bystronic Laser AG Device for bending metal pieces

Also Published As

Publication number Publication date
EP0444169A1 (en) 1991-09-04
DE69009446D1 (en) 1994-07-07
ATE106290T1 (en) 1994-06-15
WO1991003332A1 (en) 1991-03-21
JPH04501537A (en) 1992-03-19
CH680772A5 (en) 1992-11-13
US5305659A (en) 1994-04-26
DE69009446T2 (en) 1995-01-05

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