EP0140394A2 - Appareil pour plier de la tôle - Google Patents

Appareil pour plier de la tôle Download PDF

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Publication number
EP0140394A2
EP0140394A2 EP84200814A EP84200814A EP0140394A2 EP 0140394 A2 EP0140394 A2 EP 0140394A2 EP 84200814 A EP84200814 A EP 84200814A EP 84200814 A EP84200814 A EP 84200814A EP 0140394 A2 EP0140394 A2 EP 0140394A2
Authority
EP
European Patent Office
Prior art keywords
die
stamp
sheet material
bent
contact zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84200814A
Other languages
German (de)
English (en)
Other versions
EP0140394A3 (en
EP0140394B1 (fr
Inventor
Cornelis Hendricus Liet
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT84200814T priority Critical patent/ATE38788T1/de
Priority to US06/657,724 priority patent/US4672835A/en
Priority to HU843769A priority patent/HUT40588A/hu
Priority to DK483084A priority patent/DK157479C/da
Priority to AU34072/84A priority patent/AU3407284A/en
Publication of EP0140394A2 publication Critical patent/EP0140394A2/fr
Priority to JP12500185A priority patent/JPS613617A/ja
Publication of EP0140394A3 publication Critical patent/EP0140394A3/en
Application granted granted Critical
Publication of EP0140394B1 publication Critical patent/EP0140394B1/fr
Expired 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
    • 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
    • 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
    • B21D5/002—Positioning devices
    • 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
    • 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

Definitions

  • the apparatus relates to an apparatus for bending sheet material, including a die having at least one longitudinally extending groove and a stamp having at least one linear contact zone for contacting the sheet material to be bent, the die and the stamp being movable towards each other.
  • the invention has the object of providing an apparatus of the kind indicated hereinabove in which this drawback has been overcome in a simple but nevertheless efficient manner.
  • the apparatus according to the invention is characterized in that the die includes at least one reciprocable die part adapted to define the size and the shape of the groove.
  • the die includes two die parts disposed on either side of a vertical centre plane in which the contact zone of the stamp is situated, each of said die parts being reciprocable relative to said vertical centre plane, and preferably both die parts are simultaneously reciprocable with equal speed.
  • this draw back is overcome in that the (each) die part starting from a position in which the stamp has its contact zone just contacting the sheet material to be bent, in dependency of the relative movement of the stamp and the die, are movable relative to the contact zone of the stamp in such a manner that the distance between the contact zone of the stamp and the linear contact zone of the (each) die part with the sheet material to be bent remains substantially constant during bending.
  • the surface of the sheet material to be bent during bending does not substantially slide along the or each die part so that no wear of the die parts takes place and the surface of the sheet material cannot be damaged. Furthermore, the accuracy of the dimensions will be maintained during the bending.
  • each die part is movable to a position in which the groove of the die is fully closed and the stamp includes at least one reciprocable stamp part adapted to define the size and the shape of a groove in the stamp.
  • the die may be used as a stamp and the stamp as a die, so that for bending of a Z-profile, for example, there is no necessity of turning the sheet material.
  • the (each) stamp part starting from a position in which the die brought into the closed position has a contact zone just contacting the sheet material to be bent, in dependency of the relative movement of the stamp and the die, is movable relative to the contact zone of the die in such a manner that the distance between the contact zone of the die and the contact zone of the (each) stamp part with the sheet material to be bent remains substantially constant during bending.
  • the die and the stamp each include a pivotably supported carrier, said carriers each carrying at least a die part and a stamp part which may be positioned into a working position by pivoting of the carrier.
  • the stamp is mounted for pivoting about an axis lying in the vertical centre plane and has at least one longitudinal end coupled to an operating means for pivoting the stamp, said stamp being pivotable through such an angle that with the stamp parts moved from each other the contact zone of at least one stamp part may be positioned into the vertical centre plane.
  • the one stamp part of which the contact zone is pivoted into the vertical centre plane may be used as a stamp so as to enable the bending of certain profiles, wherein a part of the already bent profile is received into the groove between the stamp parts.
  • the stamp and the die according to the invention are tiltable relative to the base about a longitudinal axis which substantially coincides with the contact zone between the die part disposed at the side of the support surface and the sheet material to be bent.
  • the abutment in an apparatus including an abutment for the sheet material to be bent it is to be preferred that the abutment is supported by a frame which is pivotably connected with one of said die parts about a pivoting axis which substantially coincides with the contact zone between said one die part and the sheet material to be bent.
  • the frame includes a support beam which is parallel to the pivoting axis, and two arms are mounted on the support beam for sliding motion in parallel to said pivoting axis, each arm at its end carrying an abutment jaw, and the support beam is slidable transversely of said pivoting axis.
  • the frame is connected with a base of the apparatus by an actuating means which effects the pivotal motion of the frame in dependency of the relative movement of the stamp and the die.
  • the pivoting movement of the frame in accordance with the movement of the stamp relative to the die may be controlled whereby when using a suitable control unit the complete bending process for obtaining a desired profile may be performed completely automatically.
  • the frame in a favourable embodiment includes a rotary platform substantially disposed in the centre for retaining the sheet material to be bent thereon.
  • the costs of manufactoring the apparatus of the invention may be kept low, when the movable die parts and the movable stamp parts, if any, are similar to each other.
  • a first embodiment of the apparatus for bending sheet material is designated with the reference number 1, and includes a stamp 3 carried by an upper beam 2, the stamp being downwardly movable by hydraulic cylinders 4 for bending the sheet material.
  • the piston position of the cylinders 4 is determined by potentiometers 5 disposed at either side of the upper beam 2 and of which only one is shown in fig. l.
  • the upper beam 2 for that purpose is connected by a wire 6 with the runners of the potentiometers 5.
  • the electric signals delivered by the runners of the potentiometers 5 and corresponding with the position of the upper beam 2 can be used by a suitable electronic control unit for controlling the hydraulic cylinders 4.
  • the apparatus 1 is further provided with a die 7 including two movable die parts 8.
  • the die parts 8 which define a groove 9 between them, at their side remote from the groove 9 each are provided with a saw teeth-like side cooperating with a complementary saw teeth-like side of a slidable operating rod 10 as designated with 11.
  • the die parts 8 can be reciprocated so that the size of the groove 9 in dependency of the kind and thickness of the sheet material to be bent and the profile to be shaped can be adjusted.
  • Both die parts 8 are disposed at either sides of a vertical centre plane designated by a broken line 12, a linear contact zone 13 of the stamp 3 being disposed in said plane, the stamp 3 with said contact zone 13 contacting the sheet material to be bent. Both die parts are simultaneously reciprocable relative to the said vertical centre plane with equal speed.
  • Fig. 2 schematically represents a side view of a second embodiment of the apparatus for bending the sheet material and mainly shows a die 14 and a stamp 15.
  • the die 14 consists of an elongate beam of U-shaped cross section.
  • the stamp 15 is of equal length as the die 14 and in this case is provided with a tip 16 of V-shaped cross section forming a linear contact zone 17, with which the stamp 15 contacts the sheet material 18 to be bent.
  • the die 14 in this embodiment is provided with two die parts 18 which are pivotally mounted in the die 14 and which define a groove 19 in the die. By pivoting of the die parts 18 the size and the shape of the groove 19 can be defined. Furthermore it is possible to control the pivoting motion of the die parts 18 in dependency of the movement of the stamp 15 so as to realize important advantages.
  • the pivoting motion of the die parts 18 can be obtained in various manners, for example by supporting the die parts 18 on a series of support blocks 20with interposition of a cylindrical cavity bearing 21, while the support blocks at the lower side each are provided with a surface inclined in the direction perpendicular to the plane of the drawing and cooperating with an inclined surface formed in the fixed die part 22.
  • the support blocks 12 perpendicular to the plane of the drawing with a suitabe operating means the die parts 18 may be pivoted upwardly and downwardly.
  • the control unit may control the pivoting motion of each die part 18 starting from a position designated by the broken line, in which the stamp 15 with its contact zones 17 just contacts the sheet material 23 to be bent, in such manner relative to the contact zone 17 of the stamp 15 that the distance between this contact zone 17 and the linear contact zone 24 of each die part 18 with the sheet material 23 to be bent remains substantially constant during bending.
  • the movement of the stamp 15 may be determined with potentiometers in the same manner as hereinabove described.
  • the sheet material will not substantially slide over the contact zones 24 of the die parts 18 during bending whereby wear of the die parts 18 and damage to the sheet material is avoided. Furthermore the desired profile can be shaped in this manner with high accuracy.
  • each die part 18 requires a separate operating mechanism.
  • Fig. 3 schematically represents a section of an embodiment of the apparatus of the invention for bending sheet material and mainly shows a die 25 and a stamp 26.
  • a single line 29 designates the connection between an upper beam 27 and a lower beam 28, which connection, of course, will always be present.
  • the die 26 is provided with a die carrying member 30 supported by the lower beam 27 and two movable die parts 31 disposed at either side of the vertical centre plane designated by a broken line 32.
  • the die carrying member 30 includes a longitudinally extending bearing cavity 33 in which the respective die part 31 is pivotably supported with an extension 34 of partly circular section. Furthermore each movable die part 31 by a ball-joint 35 is connected with the ends of a plurality of arms 36 spaced throughout the length of the die 25. The arms have their other ends also connected by a ball-joint 37 with an operating rod 38 (see also fig. 4), which in the represented embodiment is common to both die parts 3l.
  • the operating rod is longitudinally slidably mounted in the die carrying member 30 and at one end coupled to an operating means in a manner not illustrated.
  • the die parts 31 may be pivoted back and forth so that the size and the shape of the groove 39 defined between the die parts 31 may be adjusted. Thereby the die parts 31 may be positioned with their ends 40 against each other so that the groove 39 is fully closed. Thereby the die 25 may also be used as a stamp.
  • the stamp 27 is mainly embodied in the same manner as the die 25 and is provided with a stamp carrying member 41 connected with the upper beam 28 and having two longitudinally extending bearing cavities 42 in which movable stamp parts 43 may be pivotably supported with an extension 44 of partly circular section.
  • the pivoting motion of the stamp parts 43 is effected in a similar way by arms 45 and an operating rod 46.
  • the pivoting motion of the movable die parts 31 and the movable stamp parts 43, respectively, can be controlled by a suitable control unit in dependency of the movement of the stamp 26 relative to the die 25 starting from a position in i which the stamp 26 respectively the die 25 with the contact zones just contacts the sheet material to be bent in such manner relative to the contact zone of the stamp 26 respectively the die 25 that the distance between the various contact zones remains substantially constant during bending.
  • the die carrying member 30 at the lower side is provided with a channel 47 of inverted U-shaped section, in which the upper end of the lower beam 27 is received.
  • This upper end are arranged bores 48 spaced regularly throughout the length and designated in fig. 3 by a dotted line.
  • slots 50 are formed at each bore 48 as may be seen in the fig. 3 and 5.
  • a shaft 51 is fitted and this shaft 51 at both ends carries excentric stub axles 52 projecting into the slots 50.
  • the stub axles 52 are pivotably journaled in slide blocks 53 mounted in the slots 50.
  • On one of the stub axles 52 in a manner not illustrated a drivable operating arm 54 is secured for rotating the respective shaft 51.
  • the shaft 51 will turn whereby the die 25 locally as a result of the excentric stub axles will somewhat move downwardly or upwardly. Thereby it is possible to camber the die 25 in a relatively simple manner.
  • Fig. 6 represents an alternative embodiment of the apparatus which is embodied in such manner that the sheet material to be bent also can be bent in two directions without turning of the sheet material.
  • the apparatus of fig. 6 for that purpose is provided with a die 55 having a rotatably supported carrier 56 and a stamp 57 having a rotatably supported carrier 58.
  • the pivoting motion of the carrier 56, 58 is effected by an associated operating means 59, 60 which by an arm 61 is connected with the respective carrier.
  • Each carrier 56, 58 includes a die part 62 and a stamp part 63 which may be positioned into a working position by the rotation of the respective carrier.
  • the radial distances of the pivoting axis of the carrier 56, 58 to the contact zone of the stamp part 63 respectively the support surface of the die part 62 preferably are equal so that the heigth of the not illustrated support surface supporting the sheet material does not have to be adjustable.
  • the angular distance between the die part 62 and the stalmp part 63 is larger than 90° as appears from fig. 6 .
  • Fig. 7 represents a side view of the stamp 26.
  • the stamp 26 by a cylindrical bearing 64 is connected with the upper beam 28 so that the stamp 26 is pivotal about the axis 65 of this cylindrical bearing 64, which axis is disposed in the vertical centre plane 32.
  • the stamp 26 is provided with a coupling plate 66 through which the stamp 26 is coupled with an operating arm 67 and for that purpose a slot 68 is disposed in the coupling plate 66 and traversed by a connecting bolt 69.
  • the other end of the operating arm 67 is coupled with an actuating rod 70 which is common to both operating arms.
  • the stamp 26 from the normal position shown in the left part of fig. 7, in which the contact zone 71 of the stamp parts 43 positioned in the closed position is disposed in the vertical centre plane 32, may be pivoted to the position shown in the right parts of fig. 7, in which the contact zone 72 of one of the stamp parts 43 positioned to the fully open position is disposed in the vertical centre plane.
  • the stamp may also be pivoted to the right in the drawing so that the contact zone of the other stamp part 43 will be positioned in the vertical centre plane. In this position of the stamp 26 only one stamp part 43 is used as a stamp whereby it is possible to bend profiles in such manner that part of the sheet material to be bent may be received into the groove 73 between both stamp parts 43.
  • Fig. 8 represents a section, partly in side view, of the die 25, in which an adjustable abutment is provided which as a whole is designated with 74.
  • the abutment 74 includes two abutment jaws 75 in which an end edge of the sheet material to be bent can be clamped.
  • the one jaw part 76 of both abutment jaws 75 in a manner not illustrated may be operated by a rod 77.
  • the abutment jaws 75 are disposed each on the one end of an arm 78, which arms 78 are mounted on slide blocks 79 which are slidably ranged on a support beam 80.
  • the support beam 80 is part of a frame 81 which is pivotably connected with this die part 31 about a pivoting axis substantially coinciding with the contact zone 82 between the one die part 31 and the sheet material to be bent.
  • the support beam 80 extends in parallel to the pivoting axis designated with 83 in fig. 10 so that the arms 78 are slidable in parallel to this pivoting axis across the support beam 80 for accommodating the width of the sheet material to be bent.
  • the frame 81 is provided with two arms 84, of which the first ends are pivotably connected with the said die part 3J;. On the other ends of the arms 84 a box beam 85 is secured, which extends beyond the one arm 84 and supports a drive motor 87 on this extending end 86. On the box beam 85 two boxes 88 are mounted and in each of them a screw spindle 89 is rotatably journaled. Each box 88 carries a guide rod 90 in parallel to the screw spindle 89.
  • the support beam 80 at both its ends is provided with an extension 91 in which a threaded bore 92 is formed cooperating with the respective screw spindle 89, and with a guide element 93 cooperating with the respective guide rod 90.
  • the screw spindles 89 with their one end project into the box beam 85 and at this end are provided with toothed-belt pulleys 94, through which the screw spindles 89 are coupled to the drive motor 87 by toothed belts 95.
  • the support beam 80 by the actuation of the motor 87 can be moved transversely of the pivoting axis 83 so that the distance between the abutment jaws 75 and the die 25 is adjustable in accordance with the desired location of the shape to be bent into the sheet material.
  • the frame 81 by an actuating mechanism 97 is connected with the lower end of the lower beam 27 or a base (not illustrated) of the apparatus, which carries this lower beam 27.
  • this actuating mechanism 97 consists of two not visible screw spindles which are rotatably journaled in boxes 97 which are coupled to the boxes 88.
  • the screw spindles are drivable by a motor 98 through not visible toothed belts running in a protective box 99. In this manner the pivoting motion of the frame 81 may be effected.
  • the pivoting motion in this case is dependent of the relative movement of the stamp 26 and the die 25.
  • the movement of the stamp 26, for example, can be determined in the manner described in connection with fig. 1 with a potentiometer which is coupled to a control unit.
  • the control unit controls the motor 98 in such manner that the pivoting movement of the frame 81 exactly follows the movement of the sheet material during bending.
  • the control unit subsequently may control the motor 87 in order to move the sheet material for bending the sheet material in a next desired location. Since the abutments jaws 75 may continuously retain the end edge of the sheet material, a profile may be fabricated from the sheet material with very high accuracy.
  • the described apparatus thereby is very suitable for completely automatically bending desired profiles under control of a suitable computer.
  • the frame 81 furthermore includes a rotary platform 100 which is disposed nearly in the centre and which is movable upwardly and downwardly and which is capable of rotating the sheet material in a horizontal plane.
  • the sheet material with the abutment jaws 75 is positioned over the rotary platform 100, whereafter the sheet material is retained thereon. This may take place for example by applying a vacuum to openings formed in the rotary platform of by a rotatably mounted clamping means pressing the sheet material on the rotatary platform 100. After the rotation of the sheet material the end edge of the sheet material turned towards the abutment jaws 75 may be grasped whereafter the subsequent bending operations may be carried out.
  • Fig. 11 represents an alternative for the abutment 74 supported by the pivotable frame 81.
  • the apparatus is drawn in thick lines in a starting position, while the apparatus is represented in thin lines in an end position in which the sheet material (not illustrated) is bent over 90° and the stamp 101 and the die 102 have been tilted over an angle of 45°.
  • the die 102 which in the same manner as in the apparatus of fig. 1 is provided with movable die parts 8 and the stamp 101 are mounted in one or more C-shaped frames 103 which at the upper side are connected together by a plate 104 and at the lower side by a die table 105.
  • the die table 105 is rotatably supported by a base 106, the axis of rotation substantially coinciding with the contact zone 107 of the right die part 8.
  • the pivoting motion of the C-shaped frames 103 with the stamp 101 and the die 102 are effected by a hydraulic cylinder-piston assembly 108 which is pivotably connected with one of the frames 103 and the base 106.
  • the pivoting motion is dependent of the movement of the stamp 101, which as in the embodiment of fig. 1 is determined by a potentiometer 5.
  • the sheet material during the whole bending operation is supported by a table 109.
  • the embodiment of the apparatus represented in fig. 6 may also be provided with an abutment 74 supported by the pivotable frame 81 as illustrated in the fig. 8-10.
  • a support is mounted and the arms 84 are pivotably connected therewith.
  • the pivoting axis of the frame 81 thereby may be adjusted in the area situated substantially between the contact zone of the stamp part 63 positioned in the working position and the contact zones of the die part 62 with the die part positioned in the working position.
  • the abutment jaws 65 will have to follow this sliding motion.
  • the abutment jaws 75 may be mounted so as to be slidable against the effect of a spring.
  • the motor 87 may be controlled by the control unit for moving the abutment jaws 75 in dependency of the relative movement of the stamp 57 and the die 55. This movement in a manner as described hereinabove may be determined by a potentiometer.
EP19840200814 1983-10-10 1984-06-08 Appareil pour plier de la tôle Expired EP0140394B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT84200814T ATE38788T1 (de) 1983-10-10 1984-06-08 Einrichtung zum biegen von blechen.
US06/657,724 US4672835A (en) 1983-10-10 1984-10-04 Apparatus for bending sheet material
HU843769A HUT40588A (en) 1983-10-10 1984-10-05 Plate bending apparatus
DK483084A DK157479C (da) 1983-10-10 1984-10-09 Apparat til boejning af plademateriale
AU34072/84A AU3407284A (en) 1983-10-10 1984-10-10 Punch and die for press-brake
JP12500185A JPS613617A (ja) 1984-06-08 1985-06-07 シート状物体を折り曲げる装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8303472A NL8303472A (nl) 1983-10-10 1983-10-10 Inrichting voor het buigen van plaatmateriaal.
NL8303472 1983-10-10

Publications (3)

Publication Number Publication Date
EP0140394A2 true EP0140394A2 (fr) 1985-05-08
EP0140394A3 EP0140394A3 (en) 1985-06-12
EP0140394B1 EP0140394B1 (fr) 1988-11-23

Family

ID=19842532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840200814 Expired EP0140394B1 (fr) 1983-10-10 1984-06-08 Appareil pour plier de la tôle

Country Status (3)

Country Link
EP (1) EP0140394B1 (fr)
DE (1) DE3475280D1 (fr)
NL (1) NL8303472A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213667A2 (fr) * 1985-08-08 1987-03-11 Cornelis Hendricus Liet Procédé et appareil pour plier des pièces en tôle
EP0215263A2 (fr) * 1985-09-18 1987-03-25 Trumpf GmbH & Co Presse à plier
WO1987004374A1 (fr) * 1984-07-18 1987-07-30 Erik Rantala Machine a former les bords
GB2218929A (en) * 1988-05-16 1989-11-29 Amada Co Ltd Punch-die bending machine
WO1994009924A1 (fr) * 1992-10-26 1994-05-11 Nya Ursvikens Mekaniska Verkstads Ab Ensemble a matrices reglables
CN108856381A (zh) * 2018-08-09 2018-11-23 株洲中车特种装备科技有限公司 一种滑轮组传动式折弯机
IT202000004738A1 (it) * 2020-03-05 2021-09-05 Triveneta Impianti S R L Matrice per macchine presse piegatrici e relativa macchina pressa piegatrice

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112439810B (zh) * 2019-09-05 2023-04-07 河南森源电气股份有限公司 母排折弯工装

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Publication number Priority date Publication date Assignee Title
DE354146C (de) * 1922-06-02 Eulenberg Biege- und Richtmaschine
US2433841A (en) * 1945-04-20 1948-01-06 William T Glud Pivoted forming die for reciprocating metal plate benders
US2703129A (en) * 1951-03-23 1955-03-01 Smith Corp A O Edge turning tool
FR1294242A (fr) * 1961-04-12 1962-05-26 Comp Generale Electricite Machine à plisser les tôles de calandres
CH364749A (de) * 1958-02-06 1962-10-15 A Johnson Stanley Gesenkvorrichtung zum Biegen flacher Metallblätter
FR1390329A (fr) * 1964-01-13 1965-02-26 Technigaz Soc Machine automatique à plier pour la réalisation de deux familles sécantes d'ondulations parallèles
FR1450275A (fr) * 1964-11-02 1966-05-06 Voest Ag Dispositif plieur
FR1522730A (fr) * 1967-05-11 1968-04-26 Voest Ag Manipulateur pour presses destinées au travail des tôles
DE1452748A1 (de) * 1963-12-20 1969-04-03 Laval Turbine Abkantmaschine
FR1601215A (fr) * 1968-12-31 1970-08-10
FR2057236A5 (en) * 1969-08-07 1971-05-21 Le Transformateur Continuously folded strip metal used for - transformer housing walls
DE2418668A1 (de) * 1974-04-18 1975-10-30 Egon Evertz Biegemaschine zum biegen von blechen und baendern
EP0003476A1 (fr) * 1978-02-06 1979-08-22 VOEST-ALPINE Aktiengesellschaft Outil de cintrage pour la fabrication de pièces en forme de U
FR2452338A1 (fr) * 1979-03-27 1980-10-24 Siempelkamp Gmbh & Co Dispositif de cambrage de flans en tole
GB2050887A (en) * 1979-05-16 1981-01-14 Keeton Sons Folding machine

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE354146C (de) * 1922-06-02 Eulenberg Biege- und Richtmaschine
US2433841A (en) * 1945-04-20 1948-01-06 William T Glud Pivoted forming die for reciprocating metal plate benders
US2703129A (en) * 1951-03-23 1955-03-01 Smith Corp A O Edge turning tool
CH364749A (de) * 1958-02-06 1962-10-15 A Johnson Stanley Gesenkvorrichtung zum Biegen flacher Metallblätter
FR1294242A (fr) * 1961-04-12 1962-05-26 Comp Generale Electricite Machine à plisser les tôles de calandres
DE1452748A1 (de) * 1963-12-20 1969-04-03 Laval Turbine Abkantmaschine
FR1390329A (fr) * 1964-01-13 1965-02-26 Technigaz Soc Machine automatique à plier pour la réalisation de deux familles sécantes d'ondulations parallèles
FR1450275A (fr) * 1964-11-02 1966-05-06 Voest Ag Dispositif plieur
FR1522730A (fr) * 1967-05-11 1968-04-26 Voest Ag Manipulateur pour presses destinées au travail des tôles
FR1601215A (fr) * 1968-12-31 1970-08-10
FR2057236A5 (en) * 1969-08-07 1971-05-21 Le Transformateur Continuously folded strip metal used for - transformer housing walls
DE2418668A1 (de) * 1974-04-18 1975-10-30 Egon Evertz Biegemaschine zum biegen von blechen und baendern
EP0003476A1 (fr) * 1978-02-06 1979-08-22 VOEST-ALPINE Aktiengesellschaft Outil de cintrage pour la fabrication de pièces en forme de U
FR2452338A1 (fr) * 1979-03-27 1980-10-24 Siempelkamp Gmbh & Co Dispositif de cambrage de flans en tole
GB2050887A (en) * 1979-05-16 1981-01-14 Keeton Sons Folding machine

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987004374A1 (fr) * 1984-07-18 1987-07-30 Erik Rantala Machine a former les bords
EP0213667A2 (fr) * 1985-08-08 1987-03-11 Cornelis Hendricus Liet Procédé et appareil pour plier des pièces en tôle
EP0213667A3 (fr) * 1985-08-08 1988-09-14 Cornelis Hendricus Liet Procédé et appareil pour plier des pièces en tôle
EP0215263A2 (fr) * 1985-09-18 1987-03-25 Trumpf GmbH & Co Presse à plier
EP0215263A3 (en) * 1985-09-18 1987-09-23 Trumpf Gmbh & Co Press brake
US4753099A (en) * 1985-09-18 1988-06-28 Trumpf Gmbh & Co. Bending press for sheet metal
GB2218929B (en) * 1988-05-16 1993-01-13 Amada Co Ltd Plate bending machine and method of bending a workpiece
GB2254273A (en) * 1988-05-16 1992-10-07 Amada Co Ltd Punch and die support
GB2218929A (en) * 1988-05-16 1989-11-29 Amada Co Ltd Punch-die bending machine
GB2254273B (en) * 1988-05-16 1993-01-13 Amada Co Ltd Punch-and-die support means for use in a plate bending machine
WO1994009924A1 (fr) * 1992-10-26 1994-05-11 Nya Ursvikens Mekaniska Verkstads Ab Ensemble a matrices reglables
US5564301A (en) * 1992-10-26 1996-10-15 Nya Ursvikens Mekaniska Verkstads Ab Adjustable die assembly
CN108856381A (zh) * 2018-08-09 2018-11-23 株洲中车特种装备科技有限公司 一种滑轮组传动式折弯机
CN108856381B (zh) * 2018-08-09 2024-02-02 株洲中车特种装备科技有限公司 一种滑轮组传动式折弯机
IT202000004738A1 (it) * 2020-03-05 2021-09-05 Triveneta Impianti S R L Matrice per macchine presse piegatrici e relativa macchina pressa piegatrice
WO2021176350A1 (fr) * 2020-03-05 2021-09-10 Triveneta Impianti S.R.L. Matrice pour machines de cintrage à la presse et machine de cintrage à la presse associée

Also Published As

Publication number Publication date
EP0140394A3 (en) 1985-06-12
EP0140394B1 (fr) 1988-11-23
NL8303472A (nl) 1985-05-01
DE3475280D1 (en) 1988-12-29

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