EP0698429A1 - Dispositif de pliage en une opération d'une serie de barres parallèles formant une treillis - Google Patents

Dispositif de pliage en une opération d'une serie de barres parallèles formant une treillis Download PDF

Info

Publication number
EP0698429A1
EP0698429A1 EP94870141A EP94870141A EP0698429A1 EP 0698429 A1 EP0698429 A1 EP 0698429A1 EP 94870141 A EP94870141 A EP 94870141A EP 94870141 A EP94870141 A EP 94870141A EP 0698429 A1 EP0698429 A1 EP 0698429A1
Authority
EP
European Patent Office
Prior art keywords
bending
movable
bar
frame
pressure pieces
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Withdrawn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
EP94870141A
Other languages
German (de)
English (en)
Inventor
Ivo Marechal
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.)
ALTRO STEEL NV
Original Assignee
ALTRO STEEL NV
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 ALTRO STEEL NV filed Critical ALTRO STEEL NV
Priority to EP94870141A priority Critical patent/EP0698429A1/fr
Publication of EP0698429A1 publication Critical patent/EP0698429A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
    • B21D11/125—Bending wire nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F33/00—Tools or devices specially designed for handling or processing wire fabrics or the like

Definitions

  • This invention relates to a device for bending in one operation a series of parallel bars of a net, consisting of longitudinal bars and cross bars welded thereon, according to the principle of the four point disposition meaning that use is made of two opposite bending moments, the points of action of which displace in such a manner that no other forces occur during the bending operation than said moments.
  • Bending machines for bending the cross bars destined for forming a net are known. Machines for bending the cross bars of a net already formed and consisting of longitudinal bars and cross bars welded thereon also exist.
  • the machines just referred to correspond to the type wherein the bar is bent by a device wherein the bar is treated according to the principle of the three or of the four point disposition. Two variants of this three point disposition exist which are described hereinafter.
  • the bar can indeed be bent by exerting a pushing force with a movable cam between two fixed cams supporting the bar.
  • the bar bends around this middle movable cam over a bending diameter equal to the one of this movable cam.
  • the movable cam may act on one side of the two fixed cams (one above and one underneath the bar).
  • the bent bar shows then a bending diameter equal to the one of the fixed cam on the side of the movable cam.
  • Bending machines for one bar based on this three point disposition have the advantage of permitting different bar diameters to be bent without adjustment.
  • the drawback is that only one bar can be bent at the same time and that another bending diameter requires another cam involving the necessary adjustment time.
  • Bending machines for one bar based on the four point disposition have the advantage of permitting bars with different diameters to be bent without adjustment whilst adjusting to another bending diameter requires little time.
  • the drawback of known machines operating according to this principle is the fact that they can bend only one bar.
  • Machines known hitherto for bending a net operate according to the principle described hereinabove under "Variant 2". Such machines have therefore the advantage of permitting indeed to bend an entire net, whilst no adjustment of the pushing cams is required as long as the bending diameter of the bar is not changed.
  • the invention has therefore as object to provide a device, the operation of which is based on the four point disposition, and which allows to bend entire nets with non-identical bar diameters without adjustment of the pushing cams as a result of automatic adaptation of certain essential components to the different bar diameters.
  • this according to the invention consists of bending means which are movable with respect to a frame and extend perpendicular or substantially perpendicular with respect to the bars to be bent, with four pressure pieces being successively mounted both on the frame and on the movable bending means, the two inner pieces of which being situated on the one side and the two outer pieces on the other side with respect to the longitudinal axis of the bar and some of these pressure pieces may be movable with respect to the longitudinal axis of the bar.
  • said bending means consist of a bending table with pressure pieces connected thereto.
  • said bending table is hingedly connected to said frame.
  • the device is constructively designed in such a manner that it comprises at least one, but preferably two bending benches which are movable to and away from each other.
  • Figure 1 is a schematic side view with partial cross sections of a device according to the invention in double disposition.
  • Figures 2 and 3 illustrate also schematically the principle of so-called four point disposition, of which the device according to the invention forms a particularly attractive realisation.
  • Figure 4 illustrates according to a perspective view the arrangement of the pressure means on the frame and on the bending table.
  • the Figure 1 annexed to this description shows thus clearly a device according to the invention in a possible double disposition of two bending benches.
  • the device On both sides of the longitudinal symmetrical plane the device comprises a frame 1, respectively 1'.
  • the frames 1 and 1' are removable from each other.
  • one of these frames for example frame 1, is a fixed frame, whereas frame 1' is movable by means which do not pertain to the invention, in such a manner that all characteristics of the bent net can be met.
  • a hinged bending table 2, 2' To a frame 1, respectively 1' is mounted a hinged bending table 2, 2'.
  • the hinge axis of the bending tables 2, 2' is referred to by references 3, 3'.
  • Each bending table 2, 2' may take in any position.
  • the bending table 2 can take in for example the position shown in figure 1 by using very different pushing means.
  • One thereof is for example the spindle mechanism 4, 4' with hinge points 5, 5' relative to the frame 1 respectively 1'.
  • a flat support 6, respectively 6' is provided onto each bending table, onto which support the net lies and can be displaced over.
  • One cross bar from such a net is shown in Figures 1 and 4 and has been given the reference 7, 7'.
  • the longitudinal bars, only some of which are shown, are referred to by the reference 8 (in Figure 4 - 8, 8', 8'').
  • Figure 3 shows indeed schematically a non movable component referred to by the reference 9.
  • Pressure pieces connected thereto have the references 10, 11 and 10', 11'.
  • the movable component accomplishing the same function as the bending table described hereinabove is schematically shown in these Figures and referred to by the reference 12.
  • Pressure pieces cooperating therewith have the reference 10' and 11'.
  • said pressure pieces consist of movable pushing cams 14, 14' and clamping means acting as hooks 15, 15'.
  • these two components form the two first points from the series of four required for bending a bar according to the principle already described in detail hereinabove.
  • Each bending table further comprises pressure pieces acting as clamping means and formed by hooks 16, 16' and pushing means acting as pressure pieces consisting of wedge-shaped blocking means 17, 17' come each time again.
  • the wedge-shaped blocking means 17, 17' can be activated in any way just like the pushing cams 14, 14', either by a spindle mechanism, or by a hydraulic or pneumatic pistons.
  • the wedge-shaped blocking means 17, 17' are displaced along obliquely disposed sliding plates 18, 18'. These plates are in their turn fixed onto movable slides or linear guides 19, 19', which, as can be deduced from Figure 1, are part of the component 20, pertaining to the bending table 2.
  • a similar movable slide 21' is situated between component 20, 20' and 22, 22'. This component 22, 22' is connected to the hinge axis 3, 3' mentioned already hereinabove.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP94870141A 1994-08-25 1994-08-25 Dispositif de pliage en une opération d'une serie de barres parallèles formant une treillis Withdrawn EP0698429A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94870141A EP0698429A1 (fr) 1994-08-25 1994-08-25 Dispositif de pliage en une opération d'une serie de barres parallèles formant une treillis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94870141A EP0698429A1 (fr) 1994-08-25 1994-08-25 Dispositif de pliage en une opération d'une serie de barres parallèles formant une treillis

Publications (1)

Publication Number Publication Date
EP0698429A1 true EP0698429A1 (fr) 1996-02-28

Family

ID=8218668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94870141A Withdrawn EP0698429A1 (fr) 1994-08-25 1994-08-25 Dispositif de pliage en une opération d'une serie de barres parallèles formant une treillis

Country Status (1)

Country Link
EP (1) EP0698429A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR1003983B (el) * 2001-10-10 2002-09-09 Innovation Ανωνυμη Εταιρεια Παραγωγης, Εκμεταλλευσης Καινοτομικων Μηχανηματων Και Εφευρεσεων Μεθοδος και μηχανη παραγωγης πλαισιων σε σπειροειδη μορφη απο μεταλλικες ραβδους τυχαιας διατομης

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2152967A1 (fr) * 1971-09-14 1973-04-27 Bock Rudolf
DE2237151A1 (de) * 1972-07-28 1974-02-07 Agropol Ag Vorrichtung zum biegen von baustahlmatten, bewehrungsstaeben od. dgl
EP0226167A2 (fr) * 1985-12-13 1987-06-24 Helmut Dipl.-Ing. Dischler Procédé de pliage de matériau allongé ainsi que machine pour exécuter ce procédé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2152967A1 (fr) * 1971-09-14 1973-04-27 Bock Rudolf
DE2237151A1 (de) * 1972-07-28 1974-02-07 Agropol Ag Vorrichtung zum biegen von baustahlmatten, bewehrungsstaeben od. dgl
EP0226167A2 (fr) * 1985-12-13 1987-06-24 Helmut Dipl.-Ing. Dischler Procédé de pliage de matériau allongé ainsi que machine pour exécuter ce procédé

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR1003983B (el) * 2001-10-10 2002-09-09 Innovation Ανωνυμη Εταιρεια Παραγωγης, Εκμεταλλευσης Καινοτομικων Μηχανηματων Και Εφευρεσεων Μεθοδος και μηχανη παραγωγης πλαισιων σε σπειροειδη μορφη απο μεταλλικες ραβδους τυχαιας διατομης

Similar Documents

Publication Publication Date Title
US4934890A (en) Binding of perforated sheets
JPH04288932A (ja) 曲げ成形機械とその曲げ方法
JPH036853B2 (fr)
US20050172690A1 (en) Tube bending machine and its right and/or left bending device
US3910092A (en) Metal expanding machine
EP0698429A1 (fr) Dispositif de pliage en une opération d'une serie de barres parallèles formant une treillis
EP0444409A1 (fr) Machine à relier pour arrondir les dos de blocs de livres
CA1319312C (fr) Mecanisme servant au faconnage d'elements metalliques
AT396076B (de) Biegemaschine fuer blattfedern
JP3591738B2 (ja) 曲げ機械における方法およびその装置
EP0444410B1 (fr) Procédé d'endossage mécanique de blocs de livres et dispositif de mise en oeuvre du procédé
EP0676303A1 (fr) Dispositif d'endossage mécanique de blocs de livres
US5765427A (en) Bending press for sheet metal
EP0392047B1 (fr) Procédé et appareil pour déformer à chaud des laminés en résines synthétiques
EP0858846B1 (fr) Dispositif de pliage à froid des tôles pour la fabrication des articles allongés avec un profil prédéterminé
US4753424A (en) Method of clamping rails for pressure welding the same and clamping apparatus therefor
US3990288A (en) Stretch-draw metal forming
US3280413A (en) Rounding and backing method and apparatus
EP0567193B1 (fr) Dispositif pour mouvoir les lames d'une presse pour plier des tÔles
US5778719A (en) Method of stretch-forming a channel material
BE1006712A3 (nl) Inrichting voor het in een beweging plooien van een reeks naast elkaar liggende draden behorende tot een net.
SU1549635A1 (ru) Установка дл завальцовки деталей
SU1729656A2 (ru) Станок дл изготовлени замкнутых коробчатых изделий
SU742008A1 (ru) Устройство дл изготовлени изделий замкнутой формы,типа хомутов
SU872169A1 (ru) Стенд дл сборки реактивных штанг автомобил

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19960829