EP0338949A1 - Biegmaschine für Bleche - Google Patents

Biegmaschine für Bleche Download PDF

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Publication number
EP0338949A1
EP0338949A1 EP89420140A EP89420140A EP0338949A1 EP 0338949 A1 EP0338949 A1 EP 0338949A1 EP 89420140 A EP89420140 A EP 89420140A EP 89420140 A EP89420140 A EP 89420140A EP 0338949 A1 EP0338949 A1 EP 0338949A1
Authority
EP
European Patent Office
Prior art keywords
folding
machine according
chassis
plane
folding machine
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.)
Withdrawn
Application number
EP89420140A
Other languages
English (en)
French (fr)
Inventor
Jean-Marie André Glorieux
Jean-Pierre Michel Denis Gouget
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.)
Dimeco Alipresse SAS
Original Assignee
Dimeco Alipresse SAS
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 Dimeco Alipresse SAS filed Critical Dimeco Alipresse SAS
Publication of EP0338949A1 publication Critical patent/EP0338949A1/de
Withdrawn legal-status Critical Current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
    • B21D5/042—With a rotational movement of the bending blade

Definitions

  • the present invention relates to the technical field of sheet metal folding, with a view to producing articles, products or panels having, at least locally, successions of folds which may be positive or negative, depending on the local conformation to be obtained, the mechanical resistance conferred and / or the subsequent treatments applied.
  • the first technique calls for the existence of a blade which is driven in displacement, rectilinear or curved, tangentially to folding beaks formed by a bed base and a blank holding shoe immobilizing the sheet to be bent.
  • a technique is illustrated by patent EP 0 023 894 and patent EP 0 077 314 .
  • Folding by a blade moved tangentially to the folding spout of the bed base and blank holder is characterized by a sliding of the blade which is responsible for marking the sheet.
  • Such a process cannot be envisaged when it is a question of working sheets having, a priori, a surface condition which must be respected and resulting, for example, from a surface polish, a lacquering or any other application or surface treatment.
  • machines of the blade type generally have only one direction of work, so that it is necessary to turn over the blank or the sheet to be folded, whenever appropriate. reverse the folding direction.
  • the prior art knows another family of folding machines, in which the member responsible for folding the blank consists of a flap capable of being rotated on an axis parallel to that of the folding spouts.
  • the teaching disclosed does not provide any details as to the means used to allow the bypassing of the folds executed by the movable flap, when it is necessary to carry out a succession of reverse folds for which it is important to have the movable flap on either side of the clamping and holding plane of the blank or of the sheet.
  • This machine has the drawbacks already mentioned on the machines of the prior art and does not allow several successive folds to be produced.
  • the chosen arrangement is also a source of tension and deformation of the sheet for the sheet to be bent.
  • US-A-3,786,666 discloses the use of a folding flap supported by disks which can be moved on a track made up of rollers. This device does not, either, to achieve positive and negative folds, the technique used more like stamping techniques.
  • the present invention aims to provide a solution to the above problems, still unsolved by the known prior art.
  • the object of the present invention is to provide a structure of a folding machine, of the flap type, making it possible to produce, at will, without turning the blank or the sheet, successively positive and / or negative folds, capable of have bending angles less than, equal to or greater than 90 o .
  • Another object of the invention is to propose a structure of a folding machine making it possible, by simple transfer or translation of the blank or sheet, of successive folds, of complex and combined natures, which can be easily circumvented in their envelope d 'size, through the active tools of the machine, able to be brought into the required position for the execution of a fold following those already made.
  • Another objective of the present invention is to propose means allowing the execution of successive folds in any order and in any direction, without resulting in marking, scratching or other degradation of the one or other of the sides of the blank or of the sheet to be folded, by means of the rotary shutter.
  • Another object of the invention is to provide a new machine whose ability to execute, without turning the blank or the sheet, folds, whether positive or negative, makes it possible to integrate into an automatic chain or working line. fully automated and capable of having the work parameters changed quickly and easily to give it a certain degree of flexibility.
  • the sheet bending machine of the type comprising a movable frame carrying, on the one hand, a fixed base supporting a fixed lower shoe forming a folding spout, on the other hand , in a plane superimposed on the bed base, a closing-opening kneepad carrying a blank holder shoe forming a folding spout oriented parallel to and in the same direction as that of the lower shoe and arranged directly above the latter and, moreover, facing the spouts, a flap extending parallel to said spouts , capable of being pivotally controlled on an axis of rotation parallel to the spouts and carried by a member movable along a support and guide track in the form of an envelope whose geometric center is located near the spouts, is characterized in that : the movable member is a carriage movable in a cradle defining the support and guide track which is in the form of a portion of concave cylindrical envelope, open in the direction
  • the folding machine comprises, as appears in FIG. 1 , a bench 1 delimiting a guide path 2 in rectilinear movement for a movable frame 3 supporting the main bodies for taking up and folding a sheet or blank 4 arranged flat according to a layout plan and transfer P horizontal.
  • the movable frame 3 comprises, on the front, a box spring 5 rising vertically from the base and carrying a fixed lower shoe 6 .
  • the shoe 6 forms a folding spout 7 extending horizontally towards the interior of the machine.
  • the spout 7 has a folding edge 8 which is determined by a fillet or a rounding centered on a winding and folding axis 9 parallel to the plane P.
  • the frame 3 supports, by its superstructure and in a vertical plane superimposed on the bed 5 , a toggle 10 , called opening and closing.
  • the toggle joint 10 is constituted, in known manner, by a movable apron 11 suspended from the superstructure of the frame 3 by a plurality of articulated parallelograms 12 associated with one or more actuating jacks 13 .
  • the toggle joint 10 is formed so that the deck 11 can be moved vertically, in one or the other direction of the arrow f1 , relative to the bed base 5 .
  • Apron 11 carries, at its base, a hold-down shoe 14 disposed directly above the shoe 6 and forming a folding spout 15 extending parallel to and in the same direction as the spout 7 .
  • the folding spout 15 comprises a folding edge 16 constituted by a rounded or a fillet centered on a winding axis 17 parallel to the plane P.
  • the frame 3 supports, behind the facade and in the direction of the spouts 7 and 15 , a movable frame 20 which is suspended by means of two articulation axes, respectively 21 and 22 .
  • the articulation axis 21 extends horizontally, parallel to the plane of the spouts 7 and 15 and is located at the upper part of the movable frame 3 , being offset rearward relative to the plane containing the bed base 5 and the apron 11 .
  • the suspension of the chassis 20 on the axis 21 is produced by means of a motor member 23 with rectilinear stroke, designed to allow the adjustment of the horizontal position of the chassis 20 .
  • a motor member 23 with rectilinear stroke
  • the drive member 23 is constituted by two jacks 23 a , 23 b , preferably hydraulic, double acting, arranged in opposition in a common body, on either side of a fixed common partition.
  • the cylinders 23 a and 23 b can be supplied selectively for each of the two variable volume chambers which they delimit.
  • the double cylinder 23 is mounted articulated, by one of its rods, on the axis 21 and, by the other, on a pivot or an axis 24 carried by the chassis 20 .
  • the suspension of the chassis 20 by the axis 22 is ensured so that the latter is located parallel to the axis 21 , being located at a level lower than the latter while occupying, moreover, a position more offset towards the rear. with respect to the common plane of the bed base 5 and the panel 11 .
  • the suspension of the chassis 20 on the axis 22 is ensured with the interposition of a motor member 24 responsible for controlling the movement or the adjustment in the horizontal position of the chassis 20 .
  • the drive member 24 is preferably of the straight-stroke type, such as a hydraulic or pneumatic cylinder. Fig.
  • FIG. 1 shows an example of assembly according to which the jack 24 is articulated by an axis 25 on the frame mobile 3 and by an axis 26 on one of the branches of a lifting beam or of a lever 27 articulated by its other branch on the axis 22 .
  • the lifting beam or the lever 27 is connected, in its middle part, by a hinge pin 28 to a rear extension 29 of the chassis 20 .
  • the chassis 20 forms a cradle 30 defining a guide and rolling track 31 .
  • the track 31 is in the form of a portion of concave cylindrical envelope, open in the direction of the shoes 7 and 15 and whose geometric center C is located near the axes 9 and 17 .
  • Track 31 is used to support a carriage 32 mounted on track 31 with the possibility of rolling, by means of rollers 33 and counter rollers 34 .
  • the carriage 32 has a plane of symmetry P ′ occupying a radial direction centered on the center C of the track 31 .
  • the carriage 32 is coupled to a drive member 35 carried by the chassis 20 .
  • the motor member 35 is of the linear type, such as a double-acting hydraulic cylinder whose body 36 is mounted by pins 37 on a stock 38 of the chassis 20 .
  • the piston rod 39 of the jack 35 is articulated directly by a pin 40 on the carriage 32 .
  • the supply of the jack 35 therefore makes it possible, by extension or retraction of the piston rod 39 , to move the carriage along the track 31 , for example in the direction of the arrow f2 from the position according to fig. 1 and vice versa.
  • the carriage 32 carries on the plane P ′ a flap 41 capable of occupying an adjustable position, by means of adjustment members, such as screws 42 and one or more shims of thickness 43 . These adjustment members make it possible to adapt the position of the flap 41 as a function, in particular, of the thickness of the sheet or blank to be folded.
  • the flap 41 forms a head 44 extending parallel to the plane P and having, in cross section, a symmetrical profile on either side of the plane of symmetry P ′ .
  • the profile 45 consists of the presence of two inclined faces 46 a and 46 b , converging towards a flat 47 extending perpendicular to the plane P ′ of symmetry.
  • the inclined faces define, respectively, with the plane of symmetry P ′ , an angle ⁇ equal to 60 o .
  • Fig. 2 a shows that the profile 45 can also be formed by one or more radii of curvature organized symmetrically, on either side of the plane P ′ .
  • the flap 41 has a head 44 having a length close to or, preferably, equal to that of the folding spouts 7 and 15 .
  • the flap 41 is placed in the position illustrated in fig. 1, 2 and 4 .
  • the sheet or blank 4 is then placed on the spout 7 , after opening the blank holder 14 by means of the toggle 10 .
  • the sheet or blank is engaged to reach adjustable, retractable depth adjustment stops 50 , which are, for example, controlled by jacks.
  • the toggle joint 10 is controlled in the closing stroke, so as to lower the blank holder shoe 14 to pinch the blank or the sheet metal 4 between the spouts 15 and 7 .
  • the blank or the sheet 4 extends, by the desired measurement, beyond a fictitious plane P ⁇ passing through the folding edges or the fillets 8 and 16 of the spouts 7 and 15 .
  • the drive members 23 and 24 are then controlled, so as to make the center C coincide with the folding axis 17 , so that the plane P ′ of symmetry passes through this axis, as shown in FIGS. 2 and 4 .
  • the drive member 35 is then supplied to cause the retraction stroke of the rod 39 , so as to urge the movement of the carriage 32 , in the direction of the arrow f2 , on the track 31 .
  • the head 44 of the flap 41 thus bears on the face lower of the sheet or blank 4 and, by its inclined face 46 b , subjects the latter to a folding by requiring it to be wound on the edge or the edge 16 .
  • the drive member 35 is controlled to impose on the flap 41 a stroke over an angular range corresponding to the folding angle to be respected.
  • folding spout 17 and the particular shape of the head 44 make it possible to achieve positive folding over an angular amplitude greater than 90 o .
  • folding over an angular value of 0 to 120 o can be carried out.
  • Figs. 5 and 6 show that it is also possible to carry out, in a similar manner, a negative fold, that is to say oriented downward, by initially adjusting the carriage 32 to give it a high starting position, such that the plane of symmetry P ′ passes through axis 9 on which the center C of track 31 is also centered.
  • the drive member 35 is then controlled in extension stroke, so that the movement of the carriage 32 , in the opposite direction to that of the arrow f2 , ensures the winding of the blank 4 on the edge or the edge 8 , over an angular range which can also be comprised between 0 and 120 o .
  • the head 44 occupies either the position P1 or the position P2 .
  • FIG. 7 The disengagement of the head 44 , after the execution of a positive fold and assuming that it is advisable to then execute in succession a negative fold, is illustrated in FIG. 7 .
  • This clearance is obtained, first of all, by supplying the motor member 24 controlling the recoil in the direction of the arrow f3 of the chassis 20 and, consequently, of the head 44 , of a measure corresponding to the subsequent advancement to be imposed on the blank 4 .
  • the drive member 23 is powered to control the release or vertical movement of the chassis 20 in the direction of the arrow f4 , over a height corresponding, by excess, to that of the fold just executed.
  • the blank holder shoe 14 can then be ordered to open to allow the transfer or translation of the sheet 4 in the direction of the arrow f5 , on a measurement corresponding to the spacing to be respected between the first fold produced and the second to execute.
  • the drive member 24 is then controlled in the opposite direction to cause the chassis 20 to advance in the opposite direction to the arrow f3 .
  • the drive member 23 is then controlled to lower the chassis 20 in the opposite direction to the arrow f4 , in order to cause the plane P ′ to pass through the winding axis 9 , assuming that it is a question of 'then execute, as a second fold, a negative fold.
  • Fig. 8 illustrates an intermediate phase of release of the chassis 1 , occurring after the execution of a negative fold when it is necessary to execute, subsequently, a positive fold on the same blank or the same sheet 4 .
  • the structure of the machine involving a chassis suspended from two parallel articulation axes, associated with clean drive members and a guide track in the form of a portion of concave cylindrical casing carrying a swivel carriage supporting a rotary shutter, allow to realize, without turning, automatically or no, any successions of folds, positive and negative, only by controlling the sequential phases of supply of the drive members 23, 24 and 35 .
  • Many possibilities of realization can thus intervene, either by manual control, or by programmed automatic control.
  • Figs. 9 to 14 show, by way of example, possibilities of successive folding which can be programmed with the machine of the invention, without requiring the intervention of a driving staff. These various embodiments allow that it is possible to forward successively and in any order, positive and negative bends, may be of interest angles less variable than or equal to 90 o.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP89420140A 1988-04-20 1989-04-19 Biegmaschine für Bleche Withdrawn EP0338949A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8805481 1988-04-20
FR8805481A FR2630356A1 (fr) 1988-04-20 1988-04-20 Machine a plier les toles

Publications (1)

Publication Number Publication Date
EP0338949A1 true EP0338949A1 (de) 1989-10-25

Family

ID=9365654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420140A Withdrawn EP0338949A1 (de) 1988-04-20 1989-04-19 Biegmaschine für Bleche

Country Status (4)

Country Link
US (1) US4944176A (de)
EP (1) EP0338949A1 (de)
JP (1) JPH0215829A (de)
FR (1) FR2630356A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3935658A1 (de) * 1989-10-26 1991-05-02 Reinhardt Gmbh Maschbau Verfahren zum gegenlaeufigen biegen eines bleches
WO1992000154A1 (de) * 1990-06-22 1992-01-09 Horst Warneke Schwenkbiegepresse zum abkanten und verformen von blechtafeln
EP0483641A3 (en) * 1990-10-27 1992-07-15 Crucilo Entwicklungsgesellschaft Mbh Bending device for sheet metal
EP0609767A1 (de) * 1993-02-02 1994-08-10 Siemens-Albis Aktiengesellschaft Verfahren und Vorrichtung zum Biegen von Werkstücken
CN101947576A (zh) * 2010-08-25 2011-01-19 中国一冶集团有限公司 卷板机折弯构件装置
FR3012352A1 (fr) * 2013-10-30 2015-05-01 Participations G Plieuse pour flan plat
WO2015188208A1 (de) * 2014-06-10 2015-12-17 Trumpf Maschinen Austria Gmbh & Co. Kg. Biegepresse mit biegeeinheit sowie verfahren zur umformung
CN109092940A (zh) * 2018-07-03 2018-12-28 芜湖同创模具机械有限公司 一种钢板弯曲设备

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2045342T3 (es) * 1989-11-01 1994-01-16 Wegener Gmbh Maquina dobladora para piezas de plastico.
IT1258577B (it) * 1992-04-22 1996-02-27 Antonio Codatto Dispositivo di movimentazione per lame di pressa piegatrice per lamiere
IT1292259B1 (it) * 1997-04-15 1999-01-29 Antonio Codatto Pressa piegatrice per lamiere.
US6212764B1 (en) * 1997-12-17 2001-04-10 Visteon Global Technologies, Inc. Link bending machine
JP3519055B2 (ja) * 1999-04-16 2004-04-12 協和マシン株式会社 プレス機の金型加締め装置
US6094960A (en) * 1999-04-20 2000-08-01 Kane; Kevin Alan Metal strip bending device
IT1312343B1 (it) * 1999-06-03 2002-04-15 Salvagnini Italia Spa Macchina piegatrice per fogli di lamiera con bordi alti.
JP3832416B2 (ja) * 2002-02-21 2006-10-11 村田機械株式会社 曲げ機能付き板材加工機
DE102004031290A1 (de) * 2004-06-29 2006-02-09 Adam Opel Ag Ankippsystem für eine Bördelvorrichtung
USD557093S1 (en) 2004-12-16 2007-12-11 Holt Ben E Set of portable sheet metal bending devices
US7387009B2 (en) * 2005-03-24 2008-06-17 Kevin Kane Automated bending machine
USD542309S1 (en) * 2005-11-03 2007-05-08 Promau S.R.L. Folding machine (for metal sheets)
NZ564570A (en) * 2007-12-18 2010-02-26 Scott Technology Ltd Metal folding apparatus
KR101533739B1 (ko) * 2015-01-22 2015-07-03 주식회사 일우산업기계 다기능 절곡 장치
CN113020437B (zh) * 2021-03-02 2023-04-04 深圳市亿和精密科技集团有限公司 一种减少折弯擦伤的折负角装置

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DE288029C (de) *
DE584362C (de) * 1933-09-19 Hiltmann & Lorenz Akt Ges Masc Biegewange fuer Abkantmaschinen
FR1525688A (fr) * 1967-06-05 1968-05-17 Smeralovy Zd Y Narodni Podnik Machine à plier la tôle
US3786666A (en) * 1971-08-04 1974-01-22 Schiefler Tool & Eng Inc Metal bending machine
US4043165A (en) * 1976-09-15 1977-08-23 The Boeing Company Three-point, air-bending sheet metal bender
EP0022122A1 (de) * 1979-06-20 1981-01-07 VOEST-ALPINE Aktiengesellschaft Biegemaschine
EP0023894A1 (de) * 1979-08-02 1981-02-11 SALVAGNINI TRANSFERICA S.p.A. Abkantpresse zum Herstellen von Krümmungen am Rand von Blechen
FR2502518A1 (fr) * 1981-03-26 1982-10-01 Favrin Pierre Machine pour le pliage de toles en aller et retour sur plieuse
EP0077314A1 (de) * 1981-10-09 1983-04-20 VOEST-ALPINE Aktiengesellschaft Vorrichtung zum Abkanten einer Blechtafel

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US318088A (en) * 1885-05-19 cooper
US826807A (en) * 1906-04-21 1906-07-24 Alexander Slaysman Jr Machine for edging sheet-metal blanks.
US1571558A (en) * 1922-08-14 1926-02-02 James G Russell Flanging machine
US1744391A (en) * 1924-12-18 1930-01-21 Bartlett Hayward Co Plate-bending machine
FR864996A (fr) * 1940-01-06 1941-05-09 Sncase Machine à border
CH298566A (de) * 1951-04-07 1954-05-15 Witschi Paul Reglier- und Pitoniervorrichtung für Spiralen von Uhren.
NL8203340A (nl) * 1982-08-26 1984-03-16 Hermus B V Plaatwerkindustrie Inrichting voor het ombuigen van een randdeel van een metaalplaat.

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE288029C (de) *
DE584362C (de) * 1933-09-19 Hiltmann & Lorenz Akt Ges Masc Biegewange fuer Abkantmaschinen
FR1525688A (fr) * 1967-06-05 1968-05-17 Smeralovy Zd Y Narodni Podnik Machine à plier la tôle
US3786666A (en) * 1971-08-04 1974-01-22 Schiefler Tool & Eng Inc Metal bending machine
US4043165A (en) * 1976-09-15 1977-08-23 The Boeing Company Three-point, air-bending sheet metal bender
EP0022122A1 (de) * 1979-06-20 1981-01-07 VOEST-ALPINE Aktiengesellschaft Biegemaschine
EP0023894A1 (de) * 1979-08-02 1981-02-11 SALVAGNINI TRANSFERICA S.p.A. Abkantpresse zum Herstellen von Krümmungen am Rand von Blechen
FR2502518A1 (fr) * 1981-03-26 1982-10-01 Favrin Pierre Machine pour le pliage de toles en aller et retour sur plieuse
EP0077314A1 (de) * 1981-10-09 1983-04-20 VOEST-ALPINE Aktiengesellschaft Vorrichtung zum Abkanten einer Blechtafel

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3935658A1 (de) * 1989-10-26 1991-05-02 Reinhardt Gmbh Maschbau Verfahren zum gegenlaeufigen biegen eines bleches
WO1991006383A1 (de) * 1989-10-26 1991-05-16 Reinhardt Maschinenbau Gmbh Verfahren zum gegenläufigen biegen eines bleches
WO1992000154A1 (de) * 1990-06-22 1992-01-09 Horst Warneke Schwenkbiegepresse zum abkanten und verformen von blechtafeln
EP0483641A3 (en) * 1990-10-27 1992-07-15 Crucilo Entwicklungsgesellschaft Mbh Bending device for sheet metal
EP0609767A1 (de) * 1993-02-02 1994-08-10 Siemens-Albis Aktiengesellschaft Verfahren und Vorrichtung zum Biegen von Werkstücken
CN101947576A (zh) * 2010-08-25 2011-01-19 中国一冶集团有限公司 卷板机折弯构件装置
FR3012352A1 (fr) * 2013-10-30 2015-05-01 Participations G Plieuse pour flan plat
EP2871006A1 (de) * 2013-10-30 2015-05-13 G. Participations Presse für flachen Rohling
WO2015188208A1 (de) * 2014-06-10 2015-12-17 Trumpf Maschinen Austria Gmbh & Co. Kg. Biegepresse mit biegeeinheit sowie verfahren zur umformung
CN106660095A (zh) * 2014-06-10 2017-05-10 特鲁普机械奥地利有限公司及两合公司 具有弯曲单元的压弯机以及用于成形的方法
CN106660095B (zh) * 2014-06-10 2019-04-23 特鲁普机械奥地利有限公司及两合公司 具有弯曲单元的压弯机以及用于成形的方法
US10464115B2 (en) 2014-06-10 2019-11-05 Trumpf Maschinen Austria Gmbh & Co. Kg. Bending press having bending unit, and reshaping method
CN109092940A (zh) * 2018-07-03 2018-12-28 芜湖同创模具机械有限公司 一种钢板弯曲设备

Also Published As

Publication number Publication date
JPH0215829A (ja) 1990-01-19
US4944176A (en) 1990-07-31
FR2630356A1 (fr) 1989-10-27

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