EP0115840B1 - Procédé et appareil pour cintrer des profilés creux en métal, notamment des profilés d'encadrement pour fenêtres et portes - Google Patents

Procédé et appareil pour cintrer des profilés creux en métal, notamment des profilés d'encadrement pour fenêtres et portes Download PDF

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Publication number
EP0115840B1
EP0115840B1 EP84100942A EP84100942A EP0115840B1 EP 0115840 B1 EP0115840 B1 EP 0115840B1 EP 84100942 A EP84100942 A EP 84100942A EP 84100942 A EP84100942 A EP 84100942A EP 0115840 B1 EP0115840 B1 EP 0115840B1
Authority
EP
European Patent Office
Prior art keywords
bending
roller
core
rod
sectional
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
EP84100942A
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German (de)
English (en)
Other versions
EP0115840A1 (fr
Inventor
Bernard Kreye
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT84100942T priority Critical patent/ATE24131T1/de
Publication of EP0115840A1 publication Critical patent/EP0115840A1/fr
Application granted granted Critical
Publication of EP0115840B1 publication Critical patent/EP0115840B1/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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member

Definitions

  • the invention relates to a method and a device for bending hollow metal profiles, in particular frame profiles for windows and doors, to open round arches, in which a profile bar is clamped against a bending core which can be placed on the face plate of a face plate bending machine and which specifies the bending radius, and by subsequent face plate rotation and by externally acting, pressing against the profile bar and this leading bending rollers is placed on the bending core.
  • Window and door frames made from metal profiles are particularly advantageous for insulating glazing, as they are true to shape and weather-resistant and the windows and doors made with them are easy to care for and have a long service life.
  • the metal profiles are extruded hollow profiles that can be assembled into rectangular frames with the desired dimensions after being cut to length. For architectural reasons, arched windows and doors are often used in buildings. In order to be able to take advantage of metal profiles in connection with double glazing in such applications, the metal profiles must be bent.
  • the hollow metal profiles are formed with a large number of projections, grooves, ribs and shoulders and the like, in which sealing lips sit in the finished windows, engage in the projections, etc.
  • the invention has for its object to find a method and a device with which hollow metal profiles for windows and door frames can be bent easily and true to profile on a face plate bending machine.
  • This object is achieved according to the invention in a generic method in that before the insertion of the face plate rotation, a first bending roller immediately adjacent to the clamping point and thus close to the actual bending area is placed under slight pressure on the clamped profile bar and in that a second bending roll located outside the bending area is applied the still unbent section of the profile bar entering the bending area is pressed and pushes it out of the profile bar escape line, the prestressing torque of the profile bar being built up being absorbed by a tensioning device arranged on the outlet side.
  • the first bending roller While in the known method with a faceplate bending machine the first bending roller is pressed firmly against the profile to be bent in order to place it on the outer circumference of the bending core, in the bending method according to the invention for a window or door frame profile the first bending roller is merely applied to the profile to be bent .
  • the bending roller thus has no pressing function, but is merely a guide element by which the correct entry of the profile bar to be bent into the bending area is guaranteed when the face plate rotates.
  • the profile bar to be bent is only pulled around the bending core for the deformation when the face plate is rotated. Pressing and rolling processes no longer occur during the deformation.
  • the second bending roller which lies outside the actual bending area, deflects the profile bar to be bent from its alignment line, the profile bar already enters the actual bending area with prestress.
  • the bending area namely the area in which the profile to be bent is brought tangentially to the bending core, thus advantageously shifts from the clamping point towards the first bending roller, with the result that the profile is bent from the first bending roller during the bending deformation is now managed with optimal effect. Bending deformation is possible with improved profile accuracy. Profile breaks can no longer occur in the bending area. Because the roll deformations that normally occur when bending with face plate bending machines no longer occur, the bending deformation is gentler, which has an advantageous effect on the deformation of frame profiles and windows and doors.
  • a bending machine with a faceplate, and with a bending core and bending rollers, which is suitable for carrying out the method, is advantageously characterized in that a bending roller can be displaced with respect to the profile bar alignment line and that an outlet-side tensioning device is used to accommodate the biasing element of the profile bar constructed by the displacement is provided.
  • Each bending roller is profiled in such a way that almost the entire profile rod outer surface with the profile elements projecting horizontally from it is guided by the bending roller with almost no play.
  • the outer surface of each bending roller thus forms approximately a negative shape, which is form-fitting with the positive shape of the profile bar to be bent which it guides Plant stands. Since there are different profile shapes for windows and doors, bending rollers with different profiles can of course be provided, which can be interchangeably connected to the bending machine as so-called bending tools.
  • the underside of the profile bar to be bent lies on the faceplate of the bending machine and is also held in contact with the faceplate by the leading action of the bending rollers during the deformation process. Since the opposite top of the profile bar to be bent is a relatively wide, horizontal surface that also has to be bent, it is necessary to take measures to avoid the formation of folds on this horizontal top of the profile bar.
  • the bending machine is characterized in that the bending core has an outer flange that largely overlaps the upper side of the profile bar. This outer flange lies against the upper side of the profile bar during the deformation process, so that the profile bar is guided with almost no play between the surface of the rotating face plate and the adjacent lower surface of the outer flange of the bending core.
  • a clamping jaw of the clamping device is provided with an attachment element which has the same profile as the bending roller.
  • the contact pressure of the clamping jaw is distributed over the profiled side surface of the profile. This means that local damage to the protruding profile elements due to excessive pressure on the clamping jaw can no longer occur.
  • the attachment element also has the advantage that it engages the profile bar to be bent over a greater length than the relatively narrow clamping jaw.
  • each bending roller can be assembled from construction disks of different thicknesses and diameters. This allows a bending roll with the desired profile to be assembled easily.
  • the bending core can also be assembled from a plurality of construction washers, the outer flange being a construction washer whose diameter is larger than the diameter of the construction washers underneath.
  • the bending core can advantageously be formed by the construction of several disks in such a way that its thickness is adapted to the height of the profile to be bent, so that it is guided with almost no play between the surface of the rotating face plate and the lower surface of the leading outer flange.
  • attachment element for the clamping jaw can also be composed of flat strip pieces of the same length of different thicknesses and widths.
  • FIG. 1 the top view of the working area of a face plate bending machine is shown schematically.
  • the bending machine has a face plate 1 which is rotatably driven in the direction of the arrow and on which a disk-shaped bending core is arranged centrally.
  • the outer circumferential surface 3 of the bending core perpendicular to the surface of the face plate is indicated by dashed lines.
  • the face plate 1 has a clamping device 5, which is designed here as a radially extending guide groove 6, in which a clamping jaw 7 is guided in a radially movable manner by means of the spindle 8 with a key attachment 9.
  • the clamping jaw 7 is provided with an attachment element 10 which, as shown, abuts the profile bar 11 to be bent over a wide area and holds it at point 12 against the outer peripheral surface 3 of the bending core 2.
  • the bending machine has a first bending roller 13, which can be advanced against the center of the face plate by means of working cylinders (not shown) until the outer profiled surface of the bending roller 13 rests on the clamped-in profile bar 11 to be bent.
  • a second bending roller 14 is shown here in two positions. The position of the second bending roller is indicated by dashed lines, in which it has advanced so far that it lies against the still aligned profile bar 11, which is tensioned against the bending core.
  • the second bending roller 14 is advanced to the position shown by the full line, pressing against the profile bar and deflecting it from the escape line by the indicated angle a.
  • FIG. 2 shows a section through the bending machine along the line 11-11 in FIG. 1, specifically during the deformation process when the face plate 1 rotates.
  • the bending core consists of a plurality of construction washers 2a-2d which can be plugged onto the central guide mandrel 16 of the faceplate 1 and are held there with a conventional screw fastening.
  • the outer flange 4 is the section of the mounting disk 2d which projects beyond the outer peripheral surface 3 of the bending core.
  • the top 17 of the to bend profile bars 11 for a window or door frame is overlapped and guided by the outer flange 4, while the underside 18 of the profile bar rests on the top of the face plate 1.
  • the first bending roller 13 is profiled, this profiling being able to be produced by machining, but in this exemplary embodiment by building up from several disks. Due to the profiling of the bending roller, almost the entire profiled outer surface of the profile bar 11 to be bent is held in a leading system with the individual profile elements schematically indicated here which determine the cross-sectional shape. Each bending roller, including the bending roller 14 (not shown here), is held in a manner known per se on an arm 19 which is adjustable against the center of the bending machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Claims (8)

1. Procédé pour le cintrage de profilés creux en métal, notamment des profilés d'encadrement pour fenêtres et portes en arcs de cercle ouverts, selon lequel un profilé (11) est serré contre un mandrin de cintrage (2) établissant le rayon de cintrage et pouvant être monté sur le plateau (1) d'une machine à cintrer et est appliqué contre le mandrin de serrage par rotation du plateau et par des rouleaux de cintrage (13, 14) agissant de l'extérieur, pressant contre le profilé (11 ) en l'entraînant, caractérisé en ceci, qu'avant la mise en action de la rotation du plateau, un premier rouleau de cintrage (13) dans le voisinage immédiat de l'entrée en tension et par suite de la zone de cintrage (12) proprement dite est appliqué sous faible pression contre le profilé sous tension (11) et qu'un deuxième rouleau de cintrage (14) se trouvant en déhors de la zone de cintrage est serré contre la partie encore non cintrée à l'entrée de la zone de cintrage et repousse ce profilé au-delà de son alignment, le couple de tension ainsi établi du profilé (11) étant supporté par un dispositif de serrage (5) situé du côté de la sortie.
2. Machine à cintrer pour la mise en oeuvre du procédé selon la revendication 1 avec un plateau (1), avec un mandrin de cintrage (2) et avec des rouleaux de cintrage (13, 14), caractérisé en ce qu'un rouleau de cintrage (14) peut être déplacé par rapport à l'alignement du profilé et que pour recevoir le couple de tension du profilé établi par le déplacement du rouleau de cintrage (14) un dispositif de serrage (5) est prévu du côté de la sortie.
3. Machine à cintrer selon la revendication 2, caractérisé en ce que chaque rouleau de cintrage (13, 14) est profilé de façon que presque toute la surface extérieure du profilé avec les éléments de profil s'étendant horizntalement soit guidée sans jeu par le rouleau de cintrage (13, 14).
4. Machine à cintrer selon la revendication 3, caractérisé en ce que le mandrin de cintrage (2) présente une collerette extérieure (4) recouvrant en grande partie la face supérieure (17) du profilé (11
5. Machine à cintrer selon l'une des revendications 2 et 3, caractérisé en ce qu'une mâchoire de serrage (7) du dispositif de serrage (5) est munie d'un élément complémentaire (10) qui présente le même profilage que le rouleau de cintrage (13, 14).
6. Machine à cintrer selon la revendication 3, caractérisé en ce que chaque rouleau de cintrage (13, 14) se compose de disques élémentaires d'épaisseurs et de diamètres différents.
7. Machine à cintrer selon la revendication 4, caractérisé en ce que le mandrin de cintrage (2) se compose de plusieurs disques constitutifs (2a-2d) et que la collerette extérieure (4) est un disque constitutif (2d) dont le diamètre est plus grand que le diamètre des disques constitutifs (2a, 2b, 2c) situés au-dessous.
8. Machine à cintrer selon la revendication 5, caractérisé en ce que chaque élément complémentaire (10) de la mâchoire de serrage (7) se compose de pièces de longueurs égales, d'épaisseurs et le largeurs différentes.
EP84100942A 1983-02-03 1984-01-31 Procédé et appareil pour cintrer des profilés creux en métal, notamment des profilés d'encadrement pour fenêtres et portes Expired EP0115840B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84100942T ATE24131T1 (de) 1983-02-03 1984-01-31 Verfahren und vorrichtung zum biegen von hohlen metallprofilen, insbesondere rahmenprofilen fuer fenster und tueren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833303631 DE3303631A1 (de) 1983-02-03 1983-02-03 Verfahren und vorrichtung zum biegen von hohlen metallprofilen, insbesondere rahmenprofilen fuer fenster und tueren
DE3303631 1983-02-03

Publications (2)

Publication Number Publication Date
EP0115840A1 EP0115840A1 (fr) 1984-08-15
EP0115840B1 true EP0115840B1 (fr) 1986-12-10

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EP84100942A Expired EP0115840B1 (fr) 1983-02-03 1984-01-31 Procédé et appareil pour cintrer des profilés creux en métal, notamment des profilés d'encadrement pour fenêtres et portes

Country Status (3)

Country Link
EP (1) EP0115840B1 (fr)
AT (1) ATE24131T1 (fr)
DE (2) DE3303631A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4028633A1 (de) * 1990-09-08 1992-03-12 Guenter Bente Verfahren und vorrichtung zum biegen von hohlen metallprofilen

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4106230A1 (de) * 1991-02-25 1992-08-27 Hans Werner Klieme Vorrichtung zum biegen von hohlprofilstangen
DE4343862A1 (de) * 1993-12-22 1995-06-29 Bernhard Kreye Verfahren zum Biegen von Metallprofilen mit thermischer Trennung
DE4442030A1 (de) * 1994-11-25 1996-05-30 Sen Bernhard Kreye Verfahren zum Biegen von Metallprofilen, vorzugsweise Metallprofilen, die als Sprossen für Fenster und Türen verwendet werden, und Planscheibenbiegemaschine zur Durchführung des Verfahrens
JP2736629B2 (ja) * 1995-11-24 1998-04-02 矢崎化工株式会社 リブ付き樹脂被覆鋼管の冷間曲げ方法及び曲げられたリブ付き樹脂被覆鋼管
WO2006084332A1 (fr) * 2005-02-10 2006-08-17 The Australian Steel Company (Operations) Pty Ltd Machine a cintrer amelioree
CN108356099A (zh) * 2018-03-14 2018-08-03 聊城市亿支北机械设备有限公司 一种l型板材挤弧成型装置及方法
FR3112389B1 (fr) 2020-07-10 2024-03-01 Rheawave Manchon tubulaire pour la mesure de la viscoélasticité d’un produit à analyser.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE476368C (de) * 1929-05-16 Herkules Werk G M B H Vorm Wil Vorrichtung zum Biegen von Ringen aus Profileisen
NL102760C (fr) * 1957-02-06
US3885412A (en) * 1973-11-21 1975-05-27 Lawrence T Vance Method of fabricating curved tubing and product thereof
DD136582A1 (de) * 1978-05-11 1979-07-18 Erika Kirmse Rohrbiegevorrichtung
CH647428A5 (en) * 1980-08-15 1985-01-31 Haeusler Ag Chr Process for bending a sectional bar, apparatus for supporting portions of a sectional bar relative to one another and multi-roll bending machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4028633A1 (de) * 1990-09-08 1992-03-12 Guenter Bente Verfahren und vorrichtung zum biegen von hohlen metallprofilen

Also Published As

Publication number Publication date
DE3303631A1 (de) 1984-08-09
EP0115840A1 (fr) 1984-08-15
DE3461602D1 (en) 1987-01-22
ATE24131T1 (de) 1986-12-15

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