EP0826439B1 - Procédé de pliage d'un tube, dispositif de mise en oeuvre du procédé ainsi que pièce de coin réalisée d'après le procédé - Google Patents

Procédé de pliage d'un tube, dispositif de mise en oeuvre du procédé ainsi que pièce de coin réalisée d'après le procédé Download PDF

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Publication number
EP0826439B1
EP0826439B1 EP97810627A EP97810627A EP0826439B1 EP 0826439 B1 EP0826439 B1 EP 0826439B1 EP 97810627 A EP97810627 A EP 97810627A EP 97810627 A EP97810627 A EP 97810627A EP 0826439 B1 EP0826439 B1 EP 0826439B1
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EP
European Patent Office
Prior art keywords
bending
tube
bending edge
fold
edge
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 - Lifetime
Application number
EP97810627A
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German (de)
English (en)
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EP0826439A1 (fr
Inventor
Rudolf Tschopp
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Individual
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Individual
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Publication date
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Publication of EP0826439A1 publication Critical patent/EP0826439A1/fr
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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
    • B21D53/00—Making other particular articles
    • B21D53/74—Making other particular articles frames for openings, e.g. for windows, doors, handbags
    • 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

Definitions

  • the invention relates to a method for bending a cross section essentially rectangular with a protruding one Folded tube according to the preamble of claim 1.
  • the invention has for its object a method of to create the more uniform bends and especially corners with a much smaller bending radius allows.
  • the method according to the invention results from claim 1.
  • tubes with a fold, so-called flap tubes at right angles be bent, the bending radius being essentially zero.
  • It can be used in particular to produce frames that frame composed of individual profile pieces very similar are.
  • the production is much easier and therefore cost-effective. It has been shown that frames with small masses, for example, from 15 to 10 centimeters with the. Processes according to the invention can be produced.
  • the inventive The method is particularly suitable for the production of Grid elements, the grid on the inwardly projecting Seam is welded on.
  • the Pipe is a profiled tube made of sheet metal, with which Fig. 1 apparent cross section.
  • the tube 1 is as can be seen essentially rectangular and flat oval in cross section.
  • On Fold 2 is substantially coplanar with one perpendicular to the bend edge oriented tube outer surface 4.
  • An opposite of the fold 2 Have edge 32 and a subsequent edge 33 a significantly smaller bending radius than a third edge 34.
  • the outer surface 4 and the opposite Outer surface 22 much narrower than that too opposite outer surfaces 21 and 23.
  • the fold 2 is on its free and straight edge 18 as can be seen with a Strip hump 19 provided.
  • the corner 30 connects the two pipe sections 6 and 7, the Edges 18. essentially in the bending center B (Fig. 1a) intersect and on the bisector W each corner 30 one form narrow furrow-like upsetting 31. Starting from the bending center As can be seen, B is essentially the bending radius Zero.
  • the corner 30 is comparable to one corner, the one with two pipe sections provided with miter cuts.
  • the elbow formed from the tube 1 is in a preferred one 2, a frame 16, the four rectangular Has corners 30 and on a joint 29 with an inserted Connector 37 is connected.
  • a frame 16 In the frame 16 is a Grid 17 used.
  • This grid 17 is by spot welding on its edge also on the underside of the strip hump 19 welded.
  • the strip boss 19 enables an accurate and defined spot welding.
  • the grid 17 can be different formed and also by a sheet, in particular a perforated sheet 39 or be replaced by a transparent plate 40.
  • FIG. 4 show the pipe 1 to be bent, which is for bending around an edge 3 between an edge support 24, first means 8 and second Means 9 is firmly clamped.
  • the tube 1 is with the above Means 8 and 24 slidably guided on the pipe section 6, while the second pipe section 7 is held by third means 10 is.
  • the first means 8 bring the pipe section 6 into abutment to the bending edge 3, such that the tube longitudinal axis 5 is at right angles is oriented to the bending edge 3.
  • the second means 9 lead the Pipe sections 6 and 7.
  • the third means 10 are as mentioned with the pipe section 7, which leads away from the bending edge 3, firmly connected.
  • an impact body 25 is arranged on the Bottom has an oblique striking edge 26 and in the direction of the double arrow 27 according to FIG. 4 through an opening 36 of the Means 9 movable against the edge 18 and away from it is.
  • This impact body 25 is followed by a powerful one downward movement of the fold 2 acted on the edge 18 and notched.
  • the force points in the direction in which the fold 2 has to buckle during the bending process.
  • Pipe section 7 pivoted about the bending edge, for example by 90 °. 5 and 6 show the bent tube 1.
  • Die Means 8, 9 and 10 and a holder 35 are after the bending process from the bent pipe 1 to carry out a further bending process returned to a position not shown here.
  • the person skilled in the art is familiar with means 8 to 9 and 10 and 32 are to be trained and can be moved automatically.
  • the method allows the outer surface 21 to be in a frame 16 is exactly at right angles to the plane of the grid 17 or of the sheets 39 and 40.
  • a formed from the tube 1 by the method according to the invention Angle piece, in particular a frame 16, stands out on the one hand through a very high stability in the longitudinal direction as well as the sharp and regular corners 30.
  • the making of a Frame 16 is much easier and less time consuming than the welding of individual miter cut pipe sections.
  • the manufacture of the frame 16 is also by the Connect the butt 29 with an inserted connector 37 simplified. Only the grid 17 is welded on what as mentioned above by the cranked fold 2 reliable and can be done safely.
  • a preferred product of the invention The method is the grid element 38 shown in FIG. 2, in very different and especially comparative terms small masses can be produced and not only through high stability and light weight, but also by is characterized by a high level of planarity.

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

Claims (8)

  1. Procédé de pliage d'un tube (1) de section transversale essentiellement rectangulaire, pourvu d'une plissure saillante (2), la plissure se raccordant de manière coplanaire à l'une des faces extérieures du tube (4) orientées perpendiculairement par rapport à l'arête de pliage (3) et étant refoulée pendant l'opération de pliage, caractérisé en ce que, avant ou au commencement de l'opération de pliage sur la bissectrice de l'angle de pliage coupant l'arête de pliage (3), la plissure est sollicitée par une force et est entaillée, la force étant orientée dans la direction dans laquelle la plissure doit être infléchie pendant l'opération de pliage.
  2. Procédé selon la revendication 1, caractérisé en ce que le tube est amené en butée avec l'une de ses faces extérieures contre une arête de pliage, de telle sorte que l'axe longitudinal du tube (5) soit orienté à angle droit par rapport à l'arête de pliage (3), et qu'ensuite une des portions de tube (6, 7) partant de l'arête de pliage (3) soit fixée de manière immuable et que l'autre soit pivotée autour de l'arête de pliage suivant l'angle déterminé.
  3. Procédé selon la revendication 2, caractérisé en ce que pendant l'opération de pliage, la face extérieure (4) du tube (1) en appui contre l'arête de pliage (3) est sollicitée en pression dans la région de l'arête de pliage (3) et la face extérieure qui lui est opposée et/ou les deux faces extérieures du tube orientées à angle droit par rapport à l'arête de pliage sont sollicitées en pression pour empêcher un bombement.
  4. Dispositif de pliage d'un tube de section transversale essentiellement rectangulaire, pourvu d'une plissure saillante pour la mise en oeuvre du procédé selon la revendication 1 ou 2, dans lequel les moyens suivants sont prévus : une arête de pliage (3) ; des premiers moyens (8) pour amener en butée un tube (1) de section transversale essentiellement rectangulaire, pourvu d'une plissure saillante, avec l'une de ses faces extérieures (23) contre l'arête de pliage (3), de telle sorte que l'axe longitudinal (5) du tube ainsi que la plissure (2) soient orientés à angle droit par rapport à l'arête de pliage (3), des deuxièmes moyens (9), afin de fixer à coulissement l'une des deux portions de tube (6) partant de l'arête de pliage, et des troisièmes moyens (10) afin de plier l'autre portion de tube (7) partant de l'arête de pliage suivant un angle déterminé, caractérisé par un corps de frappe (25) déplaçable parallèlement à l'arête de pliage, avec lequel la plissure (2) est sollicitée et entaillée au niveau de son bord (18).
  5. Dispositif selon la revendication 4, caractérisé en ce qu'un support d'arête (24) présente une face de butée (11) contenant ou formant l'arête de pliage (3) ainsi qu'une face d'appui (12) perpendiculaire à celle-ci et connectée fixement à celle-ci, une face (13) réglable en distance étant opposée parallèlement à la face de butée (11), afin de fixer à coulissement une portion de tube (6).
  6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que les deuxièmes moyens (9) présentent une face réglable en distance, parallèle à la face de butée (11), afin de fixer à coulissement une portion de tube (6).
  7. Dispositif selon l'une quelconque des revendications 4 à 6, caractérisé en ce que les troisièmes moyens (10) fixent de manière immuable la portion de tube (7) à plier.
  8. Dispositif selon l'une quelconque des revendications 4 à 7, caractérisé en ce que dans la région de l'arête de pliage (3) sont prévues des faces de pression (15) parallèles à la face d'appui (12), lesquelles exercent, pendant une opération de pliage, une telle pression sur le tube (1), qu'un bombement des faces du tube parallèles à la face d'appui soit rendu impossible.
EP97810627A 1996-09-02 1997-09-02 Procédé de pliage d'un tube, dispositif de mise en oeuvre du procédé ainsi que pièce de coin réalisée d'après le procédé Expired - Lifetime EP0826439B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH215196 1996-09-02
CH02151/96A CH691795A5 (de) 1996-09-02 1996-09-02 Verfahren zum Biegen eines Rohres, Vorrichtung zur Durchführung des Verfahrens sowie ein nach dem Verfahren hergestelltes Element.
CH2151/96 1996-09-02

Publications (2)

Publication Number Publication Date
EP0826439A1 EP0826439A1 (fr) 1998-03-04
EP0826439B1 true EP0826439B1 (fr) 2003-04-16

Family

ID=4227076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810627A Expired - Lifetime EP0826439B1 (fr) 1996-09-02 1997-09-02 Procédé de pliage d'un tube, dispositif de mise en oeuvre du procédé ainsi que pièce de coin réalisée d'après le procédé

Country Status (4)

Country Link
EP (1) EP0826439B1 (fr)
AT (1) ATE237415T1 (fr)
CH (1) CH691795A5 (fr)
DE (1) DE59709827D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009004674A1 (de) * 2009-01-12 2010-07-15 Wuppermann Rohrtechnik Gmbh Vorrichtung und Verfahren zum Biegen eines Profils und gebogenes Profil
DE202018103022U1 (de) * 2018-05-30 2019-09-02 Grass Gmbh Wand für ein Möbel oder Möbelteil
DE102019130078A1 (de) * 2019-11-07 2021-05-12 Auto-Kabel Management Gmbh Kraftfahrzeugenergieleitung sowie ein Verfahren zum Biegen einer Kraftfahrzeugenergieleitung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1545021A (en) * 1925-03-18 1925-07-07 George W Wells Sheet-metal window panel and method of making the same
US3042099A (en) * 1959-04-23 1962-07-03 Hoover Ball & Bearing Co Method of bending tubular members
US3435511A (en) * 1966-01-11 1969-04-01 Spectronics Corp Method of making x-ray cassette
FR1512351A (fr) * 1966-05-16 1968-02-09 Seine Const Elec Perfectionnements aux dispositifs pour réaliser des cornières cintrées et aux produits obtenus
DE1752270C3 (de) * 1968-04-27 1977-10-06 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zum Bolden einer Ecke mit sehr kleinem Eckenradius an einem vorgeformten Blechteil
DE4402726A1 (de) * 1994-01-29 1995-08-10 Bayer Isolierglasfab Kg Verfahren und Vorrichtung zum Herstellen eines Abstandhalter-Rahmens für Isolierglasscheiben

Also Published As

Publication number Publication date
DE59709827D1 (de) 2003-05-22
CH691795A5 (de) 2001-10-31
ATE237415T1 (de) 2003-05-15
EP0826439A1 (fr) 1998-03-04

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