EP0121077B1 - Machine à cintrer des tubes - Google Patents

Machine à cintrer des tubes Download PDF

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Publication number
EP0121077B1
EP0121077B1 EP84101784A EP84101784A EP0121077B1 EP 0121077 B1 EP0121077 B1 EP 0121077B1 EP 84101784 A EP84101784 A EP 84101784A EP 84101784 A EP84101784 A EP 84101784A EP 0121077 B1 EP0121077 B1 EP 0121077B1
Authority
EP
European Patent Office
Prior art keywords
bending
extruded material
machine according
axis
bracket
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
EP84101784A
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German (de)
English (en)
Other versions
EP0121077B2 (fr
EP0121077A3 (en
EP0121077A2 (fr
Inventor
Thomas Peter Lang
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0121077A2 publication Critical patent/EP0121077A2/fr
Publication of EP0121077A3 publication Critical patent/EP0121077A3/de
Application granted granted Critical
Publication of EP0121077B1 publication Critical patent/EP0121077B1/fr
Publication of EP0121077B2 publication Critical patent/EP0121077B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D7/12—Bending rods, profiles, or tubes with programme control
    • 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
    • B21D7/022—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only

Definitions

  • the invention relates to a machine for bending strand material, in particular brake lines, fuel lines and.
  • a central clamping device for the strand material and with on both sides of the clamping device each a bending head which can be moved in the longitudinal direction along the axis of the unbent strand material (strand material axis), which each has a e.g. Bending molding designed as a bending roller and a pivotable in the common bending plane about the axis of the bending molding (bending molding axis), e.g. has formed as a counter pressure roller.
  • Such a machine is known for example from DE-A-2 918 813 for bending metal bars with a round full or tubular cross section.
  • the rod is clamped in the middle of a clamping device.
  • One bending head each is axially and mirror-symmetrically adjustable to the vertical machine center plane on each side of the central clamping device by means of a threaded spindle on guide rods, so that the same arches can be bent in succession from the outside to the strand material.
  • the bending plane of both bending heads is vertical.
  • the strand material can be rotated about its longitudinal axis with the aid of the central clamping swivel bearing before the next respective sheet - on both sides of the clamping device - is attached simultaneously.
  • the arches attached to the right and left at the same time inevitably lie in a common bending plane. If sheets are to be provided to the right and left of the clamping device that are not in a common bending plane, this can only be done by bending the individual sheets on both sides of the central clamping device in succession instead of at the same time, which means a considerable additional expenditure of time.
  • Brake lines, fuel lines or the like are strand material, which has considerable lengths in relation to the diameter and is therefore difficult to handle. Common to such bent parts is that they often have to have a longer, straight center piece with adjoining, completely differently curved end sections on both sides. The sequence of the individual arches can differ according to length, bending angle and bending plane. The known bending machine described above is therefore not suitable for bending brake lines, fuel lines and the like. The like. Bending by hand on special one-purpose devices, as has hitherto been customary in brake lines, fuel lines or the like, is also too time-consuming and costly.
  • the bending heads can be moved independently of one another along the strand material axis and in that the bending heads can be pivoted independently of one another by rotating the bending plane formed by the bending molding and counter-pressure molding about the strand material axis.
  • the strand material remains firm during the bending processes, i.e. not rotatable relative to the machine bed, clamped.
  • the bending heads can form different bending planes independently of one another and can also provide different distances between the bends or bending angles independently of one another, so that any bends can be lined up independently of one another on both sides of the central clamping device. This not only found a structurally simple bending machine to solve the problem described above, but also created a bending machine with high output rates.
  • the required rotation of the bending planes on both sides of the central clamping device can be solved in a structurally simple manner, for example, by arranging swivel brackets for the bending heads on both sides of the central clamping device, the swivel axis of which coincides with the strand material axis in the region of the ends of axially outer and axially inner hoop arms and the hoop webs in the Distance parallel to the strand material axis.
  • the distance between the stirrups and the strand material axis can be chosen to be relatively large, there is a large free space for the ends of the strand of material which can be bent in a very deformed manner, which is not the case with the bending machine described at the beginning because of the two guide rods and the displacement spindle for the bending head .
  • the free ends of the axially outer bracket arm can each be connected in a rotationally fixed manner to the drive shaft of a swivel motor. With the help of the respective swivel motor, the swivel bracket and thus the bending plane can be rotated up to 300 ° and more.
  • a transport motor for the axial movement of the respective bending head is expediently arranged on the bracket web so that it can be swiveled. This avoids expensive gears, transmissions or the like, since the respective transport motor, for example via threaded spindles known per se, can move the bending head assigned to it on the respective stirrup web.
  • a robust construction of the bending machine is obtained when the respective swivel bracket is pivotably mounted between a middle and an outer bracket of the machine bed.
  • the two swivel brackets are pivotally mounted on a common central bracket, which also carries the clamping device.
  • the respective bending head can be attached to a holder, which also carries the drive motor for the bending molding and / or counter-pressure molding and is axially displaceably mounted on the bracket web of the respective swivel bracket. This also promotes the goal of simple construction.
  • an end stop for the strand material can be arranged axially adjustable on the respective outer consoles; the end stops are used to position the strand material in its initial position.
  • the respective end stop can also supply a position signal dependent on its relative axial position to the central clamping device for program control of the method and pivoting of the respective bending head. This makes it possible to run certain bending processes using a standard bending program.
  • the respective bending head is preferably in its starting position when the strand material is clamped directly adjacent to the central clamping device, then it first moves axially outward along the strand material, in order then to be axially displaced from the outside in order to carry out the individual bending processes.
  • This mode of operation has the advantage that union nuts present on the strand material, as is often the case with brake lines, fuel lines or the like, are inevitably pushed to the outer end where they belong on the finished workpiece. After all, the union nuts may no longer be able to be pushed over the bent strand material into the desired outer position, especially if there are bends with a small radius of curvature.
  • the bending machine according to the invention can additionally be equipped with automatic devices for feeding the unbent strand material and / or removing the finished workpieces.
  • the strand material is e.g. subtracted from a coil.
  • the bending machine 1 shown in the drawing has a central clamping device 2 for clamping the central, essentially straight section of a strand material 20, the sections of which are to be provided on the outside with bends of different arc lengths, radii of curvature and bending planes.
  • the unbent strand material 20 forms the strand material axis S.
  • Each bending head 3, 3 ' has a bending molding 4, 4', which is designed as a bending roller in the illustrated case, and a counter pressure molding 5, 5 ', which is designed as a counter-pressure roller in the illustrated case.
  • the counter-pressure molding 5, 5' can be pivoted about the respective axis of the bending molding 4,4 ', the bending molding axis B, B', for carrying out the bending process, for example from that shown in solid lines in FIG. 4 upper position to the lower position shown in dashed lines. 5 that it can be used as a bending molding 4, 4 'and counter pressure molding 5, 5', respectively, groove-free bending rollers or counter pressure rollers.
  • the latter has, for example, a fixed clamping jaw 21 and a counter clamping jaw 22 which can be set thereon and perpendicular to the strand material axis S and which is adjustable by an actuating piston 23 which can be acted upon by pressure medium D.
  • a slightly widening positioning slot 24 is provided on the bending head 3, on the base of which clamping jaws 21 and counter-clamping jaws 22 interact.
  • Each bending head 3, 3 ' is carried at the upper end of a holder 15, 15', which holder 15, 15 'at the lower end has a drive motor 16, 16' for driving the bending molding 4,4 'and / or the counter pressure molding 5, 5 ' having.
  • Holders 15, 15 'with bending head 3, 3' and drive motor 16, 16 ' are arranged with the aid of a foot part 18, 18' on a bracket web 9, 9 'of a swivel bracket 6, 6' in the axial direction.
  • Each stirrup web 9, 9 ' has at its ends an axially inner, essentially radially extending stirrup arm 7, 7' and an axially outer, essentially radially extending stirrup arm 8, 8 '.
  • the respective inner bracket arm 7, 7 ' is mounted on a central bracket 12 of the machine bed 14, which supports the clamping device 2, so that it can pivot about the strand material axis S.
  • the ends of the respective outer bracket arm 8, 8 ' are attached in a rotationally fixed manner to the drive shaft of a swivel motor 10, 10' which is intended and is suitable for swiveling the respective swivel bracket 6, 6 'around the strand material axis S, as is shown in particular in FIG 3 emerges.
  • the bending plane E formed by the respective bending head 3, 3 ' can be rotated about the strand material axis S, so that the bending heads 3, 3' can bend independently of one another in different bending planes, while the strand material 20 is fixed in the clamping device 2 remains clamped.
  • the swivel motors 10, 10 ' are held firmly on outer brackets 13, 13' of the machine bed 14.
  • the axial adjustment of the holders 15, 15 'with the bending heads 3, 3' takes place via transport motors 11, 11 ', e.g. by means of threaded spindles (not shown) acting on the foot part 18, 18 '.
  • the transport motors 11, 11 ' are arranged at the outer end of the bar webs 9, 9' on the swivel bars 6, 6 'and can be pivoted with them.
  • end stops 17, 17 ' which are axially displaceably mounted on the outer brackets 13, 13', are fed to the respective end of the strand material 20.
  • a position signal corresponding to the position of the respective end stop 17, 17 ' is emitted, which serves as a reference value for the program control for the axial displacement and pivoting of the bending heads 3, 3', so that, depending on the axial position of the strand material 20 and the predetermined bending program required bends on both sides of the central clamping when the bending machine 1 is operated automatically also be placed in the correct place.
  • the bending heads 3, 3 ' When the strand material 20 is clamped, the bending heads 3, 3 'are in their starting position in the immediate vicinity of the central clamping device 2, as illustrated in FIGS. 1 and 2. Thereafter, the bending heads 3, 3 'are first moved to the outer end of the still straight strand material 20 to be bent without a bending process.
  • the union nuts which may be located on the strand material 20 are pushed to the outer ends of the strand material 20, where they belong on the finished workpiece. Then the individual bending operations are carried out by gradually working the bending heads 3, 3 ′ from the outside axially inward until they reach the central, just remaining section of the strand material 20, on which the strand material 20 is clamped in the central clamping device 2.
  • the bending heads 3, 3 ' can, independently of one another, carry out bends in different bending planes simultaneously, since this is determined exclusively by the respective pivot position of the respective pivot bracket 6, 6'.

Landscapes

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

Claims (13)

1. Machine à cintrer de matière d'extrusion, notemment des tubes du frein, des tubes à carburant etc., comportant un dispositif de serrage central pour la matière d'extrusion et comportant une tête à cintrer des deux côtés du dispositif de serrage manoeuvrable en sens longitudinal le long de l'axe de matière d'extrusion cintrée (l'axe de matière d'extrusion), tête laquelle comporte chaque fois une pièce façonnée à cintrer formée, par exemple, comme cylindre à cintrer, et une pièce façonnée à contre-pression formée, par exemple, comme cylindre à contre-pression et articulée au plan à cintrer commun autour de l'axe de la pièce façonnée à cintrer (l'axe de pièce façonnée à cintrer), caractérisé en ce que les têtes à cintrer (3, 3') sont manoeuvrables indépendemment le long de l'axe (S) de matière d'extrusion et que les têtes à cintrer (3, 3') sont articulées indépendamment sous rotation du plan à cintrer (E) formé par la pièce façonnée à cintrer (4,4') et la pièce façonnée contre-pression (5, 5') autour de l'axe (5) de matière d'extrusion.
2. Machine selon la revendication 1, caractérisé en ce que des traverses articulées (6, 6') pour les têtes à cintrer (3, 3') sont disposées des deux côtés du dispositif de serrage (2), dont l'axe articulé dans la région des extrémités des bras (7, 7'; 8, 8') axialement extérieurs et axialement intérieurs coïncide avec l'axe de matière d'extrusion (S), et dont les entretoises (9, 9') s'étendent à distance en parallèle à l'axe de matière d'extrusion (S).
3. Machine selon la revendication 2, caractérisé en ce que les extrémités libres du bras (8, 8') chaque fois axialement extérieurs sont chaque fois raccordées de manière résistante à la torsion à l'arbre de commande d'un moteur pivotant (10, 10').
4. Machine selon les revendications 2 ou 3, caractérisé en ce qu'un moteur de transport (11, 11') pour le mouvement axial de la tête à cintrer (3, 3') respective est disposé sur l'entretoise (9, 9') à chaque traverse (6, 6') de manière pivotante avec le dernier.
5. Machine selon une des revendications 2 à 4, caractérisé en ce que la traverse (6, 6') respective est disposé de manière pivotante entre une console centrale et une console extérieure (12; 13, 13') de la base de la machine (14).
6. Machine selon la revendication 5, caractérisé en ce que les deux traverses (6, 6') sont disposées de manière pivotante à une console centrale (12) commune portant le dispositif de serrage (2).
7. Machine selon une des revendications 2 à 6, caractérisé en ce que la tête à cintrer (3, 3') respective est prévue sur un appui (15, 15') également portant le moteur de commande (16, 16') pour la pièce façonnée à cintrer (4, 4') et/ou la pièce façonnée de contre-pression (5, 5'), et disposée de manière axialement déplaçable à l'entroise (9, 9') de la traverse (6, 6') respective.
8. Machine selon une des revendications 5 à 7, caractérisé en ce qu'une butée (17, 17') pour la matière d'extrusion (20) est disposée de manière axialement deplaçable aux consoles (13,13') respectivement extérieures.
9. Machine selon la revendication 8, caractérisé en ce que la butée (17, 17') respective produit un signal de position pour la commande de programme du mouvement et de pivotement de la tête à cintrer (3, 3') respective, dépendant de sa position axiale vis-à-vis le dispositif de serrage (2) central.
10. Machine selon une des revendications 1 à 9, caractérisé en ce que la tête à cintrer (3, 3') respective dans sa position initiale en serrant la matière d'extrusion (20) se trouve immédiatement voisin au dispositif de serrure (2) central, ensuite se meut d'abord le long de matière d'extrusion (20) de manière axiale vers l'extérieur et après est axialement déplacée de l'extérieur à l'intérieur pour exécuter des procédés à cintrer individuels.
11. Machine selon une des revendications 1 à 10, caractérisé par un dispositif alimentateur automatique de matière d'extrusion.
12. Machine selon la revendication 1, caractérisé en ce que le dispositif alimentateur de matière d'extrusion amène la matière d'extrusion à partir d'une bobine.
13. Machine selon une des revendications 1 à 12, caractérisé par un dispositif de prise automatique pour les pièces d'oeuvre usinées.
EP84101784A 1983-03-31 1984-02-21 Machine à cintrer des tubes Expired - Lifetime EP0121077B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3311766 1983-03-31
DE19833311766 DE3311766A1 (de) 1983-03-31 1983-03-31 Maschine zum biegen von strangmaterial

Publications (4)

Publication Number Publication Date
EP0121077A2 EP0121077A2 (fr) 1984-10-10
EP0121077A3 EP0121077A3 (en) 1985-01-23
EP0121077B1 true EP0121077B1 (fr) 1987-04-08
EP0121077B2 EP0121077B2 (fr) 1990-08-22

Family

ID=6195207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101784A Expired - Lifetime EP0121077B2 (fr) 1983-03-31 1984-02-21 Machine à cintrer des tubes

Country Status (4)

Country Link
US (1) US4604885A (fr)
EP (1) EP0121077B2 (fr)
JP (1) JPS59183938A (fr)
DE (2) DE8309569U1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662204A (en) * 1985-01-17 1987-05-05 Usui Kokusai Sangyo Kabushiki Kaisha Apparatus for automatically bending metallic tubes
JPH089063B2 (ja) * 1985-10-21 1996-01-31 臼井国際産業株式会社 パイプ自動ベンダーにおける曲げ加工ユニット装置
DE3544056A1 (de) * 1985-12-13 1987-06-25 Helmut Dischler Biegemaschine
GB8623305D0 (en) * 1986-09-27 1986-10-29 Langbow Ltd Bending machine
FR2610852B1 (fr) * 1987-02-17 1993-07-02 Picot Sa Machine a cintrer les tubes, pourvue de deux tetes de cintrage
DE3811891A1 (de) * 1988-04-09 1989-06-15 Semmlinger Werner Vorrichtung zum biegen von strangmaterial
JP2791569B2 (ja) * 1988-12-30 1998-08-27 臼井国際産業株式会社 細径金属管の曲げ加工装置
US4945747A (en) * 1989-05-11 1990-08-07 Chuo Electric Manufacturing Co., Ltd. Apparatus for bending elongated materials in any direction
AT393640B (de) * 1989-09-20 1991-11-25 Evg Entwicklung Verwert Ges Vorrichtung zum biegen von stabfoermigem material zu betonbewehrungselementen
JP3685526B2 (ja) * 1995-07-14 2005-08-17 臼井国際産業株式会社 パイプの曲げ加工装置
US20080027552A1 (en) * 1997-01-02 2008-01-31 Zucherman James F Spine distraction implant and method
DE69931087T2 (de) * 1998-02-03 2006-09-21 Kabushiki Kaisha Opton Biegevorrichtung
FR2795006B1 (fr) * 1999-06-21 2001-09-14 Bundy Dispositif de cintrage d'elements metalliques allonges tels que des tubes
FR2831842B1 (fr) * 2001-11-06 2004-04-02 Vincent Ind Machine automatique pour le formage de barres
ITVI20030076A1 (it) * 2003-04-15 2004-10-16 Pedrazzoli Ibp Spa Metodo e macchina per realizzare la curvatura a raggio
FR2859653B1 (fr) * 2003-09-12 2006-03-17 Silfax Sa Machine orbitale pour le cintrage des tubes
DE50307038D1 (de) * 2003-12-20 2007-05-24 Mewag Maschinenfabrik Ag Biegemaschine zum Biegen von Strängen, insbesondere von rohrförmigen Strängen
DE502007005038D1 (de) * 2007-02-07 2010-10-28 Wafios Ag Biegemaschine
DE502007000672D1 (de) * 2007-03-14 2009-06-10 Wafios Ag Greifvorrichtung zum Ergreifen und Haltern länglicher Werkstücke, insbesondere bei Biegemaschinen
US8234898B1 (en) 2008-12-12 2012-08-07 Wilson Brian S Bending assembly for extruded stock material
CN104190765B (zh) * 2014-07-30 2016-02-10 南京阿福机器人有限公司 一种折弯机

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
CA659978A (en) * 1963-03-26 Bos Karel Tube bending apparatus
US2964085A (en) * 1955-12-21 1960-12-13 Ghiringhelli Enrico Equipments for bending reinforcing irons of concrete or the like
US3245433A (en) * 1962-05-10 1966-04-12 Geometric Spring Company Wire bending machine
DE1527394A1 (de) * 1963-06-14 1969-12-18 Claude Ragache Universalbiegemaschine
DE1552970B2 (de) * 1965-04-24 1977-01-13 Maschine zum biegen von versteifungsbuegeln, armierungseisen o.dgl.
US3393714A (en) * 1965-05-19 1968-07-23 Lear Siegler Inc Wire-bending apparatus
GB1200178A (en) * 1966-11-29 1970-07-29 Harry Goble Improvements relating to bending machines for bending metal bars
US3373587A (en) * 1966-12-08 1968-03-19 Shubin Vladimir Nikolaevich Automatic tube bending machines
US3493016A (en) * 1967-06-16 1970-02-03 Lear Siegler Inc Wire bending machine
DE2918813A1 (de) * 1979-05-10 1980-11-20 Brueninghaus Gmbh Stahlwerke Vorrichtung zum biegen von metallstaeben
DD200127B1 (de) * 1981-09-23 1987-01-21 Mansfeld Kombinat W Pieck Veb Biegerolle mit umfangsrille zum biegen von rohren und stangen

Also Published As

Publication number Publication date
EP0121077B2 (fr) 1990-08-22
US4604885A (en) 1986-08-12
DE3311766C2 (fr) 1988-12-29
DE3311766A1 (de) 1984-10-04
DE8309569U1 (de) 1985-02-21
JPS59183938A (ja) 1984-10-19
EP0121077A3 (en) 1985-01-23
EP0121077A2 (fr) 1984-10-10
JPH0321243B2 (fr) 1991-03-22

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