EP0022122B1 - Machine de cintrage - Google Patents

Machine de cintrage Download PDF

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Publication number
EP0022122B1
EP0022122B1 EP80890061A EP80890061A EP0022122B1 EP 0022122 B1 EP0022122 B1 EP 0022122B1 EP 80890061 A EP80890061 A EP 80890061A EP 80890061 A EP80890061 A EP 80890061A EP 0022122 B1 EP0022122 B1 EP 0022122B1
Authority
EP
European Patent Office
Prior art keywords
bending
sheet metal
tool
crank
connecting rod
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
Application number
EP80890061A
Other languages
German (de)
English (en)
Other versions
EP0022122A1 (fr
Inventor
Hans Aschauer
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.)
Cambio Ragione Sociale salvagnini SpA
Original Assignee
Voestalpine AG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3562736&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0022122(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0022122A1 publication Critical patent/EP0022122A1/fr
Application granted granted Critical
Publication of EP0022122B1 publication Critical patent/EP0022122B1/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
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/045—With a wiping movement of the bending blade

Definitions

  • the invention relates to a bending machine for folding sheet metal sheets with holding punches for clamping a sheet metal sheet and with at least one bending tool, which is movably mounted in two mutually perpendicular directions and has separate drives for the two directions of movement, one of the two drives from one Crank drive exists.
  • the bending tool In known bending machines of the usual type, the bending tool is pivotally mounted about an axis that lies at least approximately in the bending axis, so that during the bending process the bending tool always presses vertically against the sheet metal plate, which is bent due to the bending tool attack around the counter tool determining the bending axis.
  • the advantage of these bending machines is that bending angles of up to 1'50 ° can be achieved.
  • this pivotable mounting of the bending tool entails a construction for the support for the support of the stamp, which limits the free space in front of the insertion of the sheet metal, because the support for the support of the stamp must be designed to be torsionally rigid. The manipulation of the workpiece is thereby made even more difficult.
  • an upper and a lower bending tool are provided, these bending tools being arranged on the opposite legs of a cross-sectionally C-shaped carrier and with this carrier in the vertical direction opposite one another Pair of counter tools can be adjusted, which also serve to clamp the workpiece. Because of the linear drive movement of the bending tools, however, only a bending angle of up to 90 ° can be achieved with such a bending machine, which severely limits the possible design of the workpieces. However, it is advantageous that it can be bent in two directions, so that there is no need to turn the metal sheets frequently.
  • the invention is therefore based on the object of improving a bending machine of the type described in such a way that, on the one hand, the movement of the bending tools can be adapted in a favorable manner to the required bending of the workpiece and, on the other hand, the workpiece can be bent gently.
  • crank rod of the drive designed as a crank drive carries the bending tool and in that the other drive acts on this crank rod.
  • the arrangement of the bending tool j of the crank rod of the crank mechanism ensures, in connection with the other drive engaging on this crank rod, a comparatively large swivel radius, which not only enables a larger stroke compared to the prior art to be achieved with comparable swivel angles, but also a gentler sheet metal treatment, because the bending tool hardly slides along the sheet.
  • the pivoting bearing of the crank rod on Crank pin of the crank mechanism offers the possibility to move the bending tool transversely to the stroke movement of the crank mechanism by swiveling the Kurhelstenae around the crank mechanism.
  • Elaborate backdrop guides can thus be avoided in a simple manner.
  • a sufficiently large space is created for a double-acting bending tool and for the already bent part of the sheet, so that two bends can also be made in one work step. Because of the unlimited BEWE g ungs- and driving ability of the bending tool are of course also bends in different directions possible can be eliminated so frequent turning of the workpiece.
  • crank rod carrying the bending tool runs approximately parallel to the clamping plane of the sheet metal plate, then the drive directions coincide with the main bending directions during the bending on and finishing bending, which not only has a favorable effect in terms of load, but also simplifies the control of the drives.
  • v.vrd ensured a favorable room division because the crank rod, which has to be dimensioned appropriately large as a support for the bending tool, is not in the way of the arrangement of the support of the counter tools. This support therefore does not have to be on the insertion side of the bending machine, so that there is sufficient space for the sheet metal manipulation.
  • crank rod of the drive for the one direction of movement engaging drive for the other direction of movement can also be designed as a crank drive, which allows the two drives to be easily matched to the desired tool movement, in particular for circular path sections.
  • the two crank mechanisms need only be of the same design.
  • both drives as crank drives also offers the possibility of driving both crank drives with the aid of a linkage articulated on a common anti-drive rocker.
  • the linkages can consist of simple connecting links.
  • With a common drive rocker separate control of the two drives can be omitted.
  • the common drive of the cube drives is limited to a specific tool path, which can only be changed by changing the central rotational positions of the crank drives, the cranks of which generally have an angle of rotation less than 180 °, or by changing the transmission ratio of the linkage.
  • the crank rod of the one drive which runs approximately parallel to the clamping plane of the metal sheets, has two bending tools located opposite one another in the manner of pliers, the length of the crank rod, which is directed transversely to the clamping plane, depending on the mutual distance between the two bending tools.
  • the length adjustability of the crank rod acting on the bending tools transversely to the clamping plane is necessary in order to be able to position both bending tools on the metal sheet.
  • the other bending tool is located at a distance from the workpiece which corresponds to the mutual distance of the bending tools.
  • crank rod carrying the bending tools In order to adjust the bending tool that is not in use, the crank rod carrying the bending tools must consequently be pivoted, which is carried out in the simplest manner by shortening or lengthening the crank rod of the other drive, which is directed transversely to the clamping plane.
  • the change of use of the two bending tools requires a reversal of the direction of movement of one of the two drives with regard to the tool path.
  • the two drives are each connected to a common drive rocker arm via a linkage, such a reversal of movement can be achieved in that the articulation point of one of the two stands on the drive rocker arm is adjustable between two positions opposite one another with respect to the pivot axis of the drive rocker arm. Since two points mounted diametrically with respect to an axis of rotation perform opposite movements during a rotation adjustment, the direction of movement of the crank drive connected via this linkage is reversed by a corresponding adjustment of the linkage point of the linkage.
  • the bending machine shown consists essentially of a frame 1 which has two bending tools 3a and 3b, which are arranged on a C-shaped support 2, are opposite one another like pliers, and two holding punches 4a and 4b, which act as counter tools for the Bending tools 3a and 3b are used.
  • the sheet metal plate 5 to be bent is clamped between the holding punches 4a and 4b, the holding punches 4a and 4b being supported on rigid and torsionally rigid box girders 6, of which the upper one can be raised and lowered in a manner not shown.
  • the C-shaped support 2 for the bending tools 3a and 3b is carried by a crank rod 7 of a crank mechanism 8, the crankshaft 9 of which is mounted in the frame 1.
  • the bending tools 3a and 3b can be moved essentially parallel to the clamping plane of the sheet metal plate 5 via this crank mechanism 8.
  • a further crank mechanism 10 is provided, the crankshaft 11 of which is mounted in the frame 1 and the crank rod 12 extending transversely to the clamping plane of the sheet metal plate 5 is articulated on the crank rod 7 of the crank mechanism 8.
  • the length of the crank rod -12 of the crank mechanism 10 is adjustable, which is achieved with the aid of a cylinder 13 according to the exemplary embodiment.
  • the upper bending tool 3a is used, as shown in FIGS. 1, 3 and 4, while to use the lower bending tool 3b, the cylinder 13 according to FIGS. S and 6 must be retracted.
  • each of the two bending tools can be moved along a circular path around the bending axis 14, as is shown for the upper bending tool 3a in FIG. 2.
  • the bending tool 3a From the fully drawn starting position, the bending tool 3a reaches its end position, indicated by dash-dotted lines, along the movement path 15, the sheet metal plate 5 being bent out of the clamping plane around the holding die 4b serving as a counter-tool. As a result, bending angles can be achieved that go far beyond 90 °.
  • the metal sheet 5 to be bent can be bent both upwards and downwards, so that a largely unlimited design possibility for the workpiece is ensured without having to turn the workpiece frequently.
  • the movement path 15 can be changed in shape and size in accordance with the requirements determined by the shape of the workpiece to be produced. For this reason, different bending tools and counter tools can advantageously be used.
  • a common drive rocker 16 is provided for driving the crank drives 8 and 10 and can be driven via a toothed segment 17 and a pinion 18 meshing with the toothed segment 17.
  • the crank mechanisms 8 and 10 are connected to this drive rocker 16 via a linkage 19 or 20, which in the simplest case consists of a connecting link. If the drive rocker 16 is pivoted about its axis of rotation 21 from the position shown in FIG. 3 into the position according to FIG. 4, the crank drives 8 and 10 are adjusted accordingly via the linkages 19 and 20, the tool 3a being used being moved through the crank mechanism 8 is pushed forward against the holding plungers 4a and 4b and at the same time is pressed downward via the crank mechanism 10, which results in a tool movement, as shown in FIG. 2 by the movement path 15. After this working stroke, the drive rocker 21 returns to its starting position, which results in the withdrawal of the bending tool 3a.
  • the cylinder 13 must first be acted upon in order to pivot the crank arm 7 of the crank mechanism 8 about the crank pin 22 in the direction of the bending tool 3b until the bending tool 3b assumes the position shown in FIG. 5 .
  • the lower bending tool 3b since bending is in opposite directions, the lower bending tool 3b must be pressed upward via the crank mechanism 10, which requires the direction of rotation of the crank mechanism 10 to be reversed.
  • this is achieved by displacing the articulation point 23 of the linkage 20 on the drive rocker 16, for which purpose a cylinder 24 is arranged on the drive rocker 16, via the piston rod of which the articulation point 23 is adjusted, while the articulation point 25 of the linkage 19 the drive arm remains unchanged.
  • the lower bending tool 3b must also be advanced against the holding punches 4a and 4b in order to achieve a correspondingly large bending angle.
  • crankshaft 11 of the crank mechanism 10 Since, according to the adjustment of the articulation point 23 of the linkage 20 to the opposite side of the drive rocker with respect to the pivot axis 21, the crankshaft 11 of the crank mechanism 10 is driven in opposite directions, the crank rod 7 is also pivoted in opposite directions about its crank pin 22, so that the lower bending tool 3b at the Drive movement engages behind the upper holding punch 4a, as indicated in Fig. 6.
  • the sheet metal plate 5 can thus be bent downwards or upwards in the same way.
  • the travel ranges can be changed via the angle of rotation of the crank mechanisms 8 and 10. This is for example due to a change in the pivoting angle of the drive arm 16 or an adjustment of the articulation points of the linkages 19, 20 on the crank drives or on the drive arm 16 possible.

Landscapes

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

Claims (6)

1. Machine à plier pour le pliage de feuilles de tôle, comportant des poinçons de retenue (4a, 4b) servant à serrer une feuille de tôle (5) et au moins un outil de pliage (3a, 3b) qui est monté de façon mobile dans deux directions à peu près perpendiculaires entre elles et présente des entraînements séparés (8, 10) pour les deux directions de mouvement, l'un des deux entraînements étant formé d'un mécanisme à manivelle (8), caractérisée par le fait que la bielle (7) de l'un (8) des entraînements conçus sous forme de mécanisme à manivelle porte l'outil de pliage (3a, 3b) et qu'à cette bielle (7) s'applique l'autre entraînement (10).
2. Machine à plier selon la revendication 1, caractérisée par le fait que la bielle (7) portant l'outil de pliage (3a, 3b) est dirigée à peu près parallèlement au plan de serrage de la feuille de tôle (5).
3. Machine à plier selon l'une des revendications 1 et 2, caractérisée par le fait que l'entrai- nement (10) destiné à l'autre direction de mouvement, qui s'applique à la bielle (7) de l'entraînement (8) destiné à l'un des sens de mouvement, est également sous forme de mécanisme à manivelle (10).
4. Machine à plier selon la revendication 3, caractérisée par le fait que les deux mécanismes à manivelle (8, 10) peuvent être entraînés chacun à l'aide d'un tringlage (19, 20) articulé à un balancier d'entraînement commun (16).
5. Machine à plier selon les revendications 3 et 4, caractérisée par le fait que la bielle (7) de l'un des entraînements (8), à peu près dirigée parallèlement au plan de serrage de la feuille de tôle (5), porte deux outils de pliage (3a, 3b) opposés entre eux à la façon d'une pince et que la bielle (12) de l'autre entraînement (10), dirigée transversalement au plan de serrage, est conçue de façon réglable en longueur sous la dépendance de la distance mutuelle des deux outils de pliage (3a, 3b).
6. Machine à plier selon les revendications 4 et 5, caractérisé par le fait que le point d'articulation (23) de l'un des deux tringlages (19, 20) au balancier d'entraînement (16) est réglable entre deux positions opposées l'une à l'autre relativement à l'axe de pivotement (21) du balancier d'entraînement (16).
EP80890061A 1979-06-20 1980-06-04 Machine de cintrage Expired EP0022122B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT4340/79 1979-06-20
AT0434079A AT363756B (de) 1979-06-20 1979-06-20 Biegemaschine

Publications (2)

Publication Number Publication Date
EP0022122A1 EP0022122A1 (fr) 1981-01-07
EP0022122B1 true EP0022122B1 (fr) 1983-02-23

Family

ID=3562736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80890061A Expired EP0022122B1 (fr) 1979-06-20 1980-06-04 Machine de cintrage

Country Status (7)

Country Link
US (1) US4356716A (fr)
EP (1) EP0022122B1 (fr)
JP (1) JPS566735A (fr)
AR (1) AR227642A1 (fr)
AT (1) AT363756B (fr)
BR (1) BR8003853A (fr)
DE (1) DE3062120D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019015202A1 (fr) * 2017-07-19 2019-01-24 奥美森智能装备股份有限公司 Mécanisme de pliage de plaque métallique

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FR2509204A1 (fr) * 1981-07-07 1983-01-14 Jouanel Sa Ets Y Plieuse automatique de toles
AT372883B (de) * 1981-10-09 1983-11-25 Voest Alpine Ag Vorrichtung zum abkanten einer blechtafel
GB8320764D0 (en) * 1983-08-02 1983-09-01 Rhodes Joseph Ltd Bending machines
US4722214A (en) * 1985-03-12 1988-02-02 Murata Kikai Kabushiki Kaisha Split die for holding work during bending operation
DE3605815C2 (de) * 1986-02-22 1995-06-22 Weinbrenner Paul Maschbau Vorrichtung zum Biegebearbeiten von Blechtafeln
IT1204674B (it) * 1987-06-03 1989-03-10 Salvagnini Transferica Spa Macchina piegatrice per fogli di lamiera con premilamiera a compressione uniforme
IT1222347B (it) * 1987-07-03 1990-09-05 Antonio Codatto Pressa piegatrice per lamiere
US4791801A (en) * 1987-08-03 1988-12-20 Westinghouse Electric Corp. Reversible fuel assembly grid tab repair tool
FR2630356A1 (fr) * 1988-04-20 1989-10-27 Dimeco Alipresse Machine a plier les toles
DE3826310A1 (de) * 1988-08-03 1990-02-08 Rolf Nagel Vorrichtung zum erzeugen von blechabkantungen durch biegen
JPH072088Y2 (ja) * 1988-11-15 1995-01-25 株式会社小松製作所 曲げ機械の工具位置制御装置
IT1242874B (it) * 1990-12-07 1994-05-18 Samat Srl Macchina per la piegatura di lamiere
JPH06226354A (ja) * 1993-01-29 1994-08-16 Amada Co Ltd 板材折曲げ加工装置
SE502596C2 (sv) * 1994-03-23 1995-11-20 Volvo Ab Anordning vid en bockningsenhet
DE19523226A1 (de) * 1995-06-27 1995-12-14 Joachim Linde Verfahren und Vorrichtung zum Biegen von Blechen
FR2750625B1 (fr) * 1996-07-05 1999-01-29 Jeandeaud Jean Claude Dispositif pour deplacer une partie d'une machine et exercer un effort en fin de course
US5946804A (en) * 1998-01-30 1999-09-07 Owens Corning Fiberglas Technology, Inc. Apparatus for straightening purlin beams of a roof structure
DE19901794A1 (de) * 1999-01-19 2000-07-27 Reinhardt Gmbh Maschbau Biegemaschine
IT1312435B1 (it) 1999-05-14 2002-04-17 Salvagnini Italia Spa Lama di piegatura a doppia funzione per macchina piegatrice di foglidi lamiera
IT1312333B1 (it) * 1999-05-27 2002-04-15 Salvagnini Italia Spa Lama piegatrice e schiacciatrice per macchina per la piegatura e loschiacciamento di fogli di lamiera e macchina utilizzante la lama
US6439020B1 (en) 2001-03-30 2002-08-27 Baschnagel, Iii Robert J. Gutter forming machine
US7258030B2 (en) * 2003-01-21 2007-08-21 Syron Engineering & Manufacturing, Llc Failsafe element for rotary cam unit used in a flanged die
DE60336762D1 (de) * 2003-02-06 2011-05-26 Kyowa Machine Co Ltd Plattenbiegemaschine
WO2005099927A1 (fr) * 2004-04-14 2005-10-27 Hirotec Corporation Dispositif pour processus d'ourlage et méthode pour processus d'ourlage utilisant ce dispositif
CN101052482B (zh) * 2004-10-22 2012-11-21 芬兰电力私人有限公司 金属板弯曲成型机工作单元位移运动系统
ITVR20110061A1 (it) * 2011-03-30 2012-10-01 Finn Power Italia S R L Meccanismo di movimentazione per struttura portalame di macchina pannellatrice per l'esecuzione di piegature su fogli di lamiera metallica
ITMI20121583A1 (it) * 2012-09-24 2014-03-25 Salvagnini Italia Spa Macchina pannellatrice a lama orientabile.
CN108789391A (zh) * 2017-05-05 2018-11-13 昆山恒荣泰机器人系统工程有限公司 一种仿人手折端子料带的机械手
CN110405010A (zh) * 2019-08-21 2019-11-05 佛山市镭戈斯数控设备有限公司 一种自动折弯机
CN111872190B (zh) * 2020-07-23 2021-07-13 南京云上自动化科技有限公司 一种高精、重载数控折边机
CN111804782B (zh) * 2020-07-23 2021-07-13 南京云上自动化科技有限公司 一种高速、高精数控折边机及折边梁位移求解方法
CN112207168A (zh) * 2020-10-23 2021-01-12 南京邮电大学 一种折边机折边梁驱动机构
CN112338025B (zh) * 2020-10-23 2022-01-04 南京云上自动化科技有限公司 一种具有三自由度的金属工件折边机

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US4043165A (en) * 1976-09-15 1977-08-23 The Boeing Company Three-point, air-bending sheet metal bender
IT1086365B (it) 1977-09-19 1985-05-28 Salvagnini Transferica Spa Macchina per la produzione di pannelli di lamiera rettangolare con bordi piegati

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Publication number Priority date Publication date Assignee Title
GB1090662A (en) * 1965-04-08 1967-11-15 Wilfred Ernest Gale Improvements in or relating to folding machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019015202A1 (fr) * 2017-07-19 2019-01-24 奥美森智能装备股份有限公司 Mécanisme de pliage de plaque métallique

Also Published As

Publication number Publication date
BR8003853A (pt) 1981-01-13
ATA434079A (de) 1981-01-15
EP0022122A1 (fr) 1981-01-07
JPS566735A (en) 1981-01-23
AR227642A1 (es) 1982-11-30
JPS6322894B2 (fr) 1988-05-13
AT363756B (de) 1981-08-25
DE3062120D1 (en) 1983-03-31
US4356716A (en) 1982-11-02

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