EP1543892B1 - Dispositif à cintrer des barres, notamment des tuyaux - Google Patents

Dispositif à cintrer des barres, notamment des tuyaux Download PDF

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Publication number
EP1543892B1
EP1543892B1 EP20030029513 EP03029513A EP1543892B1 EP 1543892 B1 EP1543892 B1 EP 1543892B1 EP 20030029513 EP20030029513 EP 20030029513 EP 03029513 A EP03029513 A EP 03029513A EP 1543892 B1 EP1543892 B1 EP 1543892B1
Authority
EP
European Patent Office
Prior art keywords
bending
stand
driving
machine according
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.)
Expired - Fee Related
Application number
EP20030029513
Other languages
German (de)
English (en)
Other versions
EP1543892A1 (fr
Inventor
Udo Peters
Urs Kuehni
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.)
Mewag Maschinenfabrik AG
Original Assignee
Mewag Maschinenfabrik AG
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 Mewag Maschinenfabrik AG filed Critical Mewag Maschinenfabrik AG
Priority to DE50307038T priority Critical patent/DE50307038D1/de
Priority to EP20030029513 priority patent/EP1543892B1/fr
Publication of EP1543892A1 publication Critical patent/EP1543892A1/fr
Application granted granted Critical
Publication of EP1543892B1 publication Critical patent/EP1543892B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B21D7/022—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
    • 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

Definitions

  • the invention relates to a bending machine according to the preamble of claim 1.
  • bending machines for bending strands, in particular of tubular strands with relatively small outer diameters of about 15 mm and smaller known. These bending machines work without bending mandrels and are equipped with one or more bending stands.
  • the bending head is attached to a vertically arranged by 360 ° pivotable support disk and has a radial slot for insertion of the strand to be bent. This pivotable arrangement of the bending head allows bending in all directions.
  • a device for bending pipes which has a bending stand with a rotatably mounted, drivable support disk.
  • the support disk is provided with a segment-like radial slot for inserting unbent pipes.
  • a bending head with a drivable Biegearm is attached on the support disc.
  • a stationarily arranged on the bending stand motor drives via chains both the support plate and the bending arm on the bending head.
  • a lock which cooperates with a brake, necessary.
  • This common drive for the pivoting movement of the support disk and for the movement of the bending arm requires a plurality of deflections of the drive movement with pinions and flexible traction means such as chains and corresponding means for braking and locking the support disk movement. Furthermore, this common drive prevents a rapid consequence of the necessary for a bending operation Tragusionn- and Biegearmieri, because between these two movements a blocking of the support plate is required. Only after completion of the blocking movement of the bending arm can be initiated. Therefore, such bending machines work accordingly slowly and because of the many deflections of the long flexible traction means little precise. In addition, she needs a lot of maintenance.
  • a bending machine for bending tubular strands which has a machine bed as a foundation plate for a strand holding device and a displaceable on the machine bed bending stand.
  • the bending stand is provided with a rotatable by 360 ° support plate and attached to the support disc bending head.
  • One first electric motor for the displacement of the bending stand is arranged on the machine bed. This electric motor generates the strand feed by the displacement of the bending stand.
  • a second electric motor is arranged on the sliding bending stand and generates the rotational movement of the support disk by 360 ° together with the bending head.
  • a third electric motor is connected to the bending head and is pivoted together with the support disk and the bending head.
  • the electric motor with a reduction gear and the bending head and the rotatable support disc together form a correspondingly large mass, which must be accelerated and decelerated at each bending operation and at each strand feed. Furthermore, for the power supply to the mobile motors arranged cables etc. for a mobile power supply necessary.
  • By mounting the second electric motor on the bending stand whose displaceable mass is increased. The relatively large masses to be moved limit the working speed and increase the susceptibility of the bending machine. The free space in the range of movement of the workpiece is thereby severely limited.
  • a bending head On a horizontally movable stand, a bending head is attached to a 360 ° rotatable vertical support disc. Parallel to the support disk on the stator, a drive disk is arranged, which pivots a bending arm of a bending head via an angular gear and thereby performs a bending on the strand material.
  • the drive for both the support disc and for the bending head by two mounted on the movable stator motors with their associated gearboxes.
  • the invention is based on the object to overcome the disadvantages described and in particular to build a bending machine, which allows a great deal of flexibility ie a rapid conversion to other products and has a compact relatively lightweight bending stand.
  • space should be created in the area of the bending stand, thus for facilities for loading and unloading the bending machine good accessibility is available.
  • a further objective is the achievement of a high number of bending cycles per unit time on the same bending part or bending parts which follow themselves by reducing the masses moved and a high bending precision.
  • the ease of maintenance of the machine should be improved.
  • the bending machine according to the invention offers a high degree of flexibility due to the compact bending stand. a quick conversion to other products.
  • the free space in the area of the bending stand also creates additional freedom for the bent product as well as optimum accessibility for loading and unloading facilities. Furthermore, by reducing the moving masses a high number of cycles of bending operations, even with elongated bent tubes, high bending precision and improved ease of maintenance of the machine can be achieved.
  • An advantageous Anodnung the drive units is achieved if they are attached outside of predetermined displacement paths of the bending stand at the end of the machine bed.
  • the drive units are designed as electric motors that transmit their driving force via profiled shafts to transmissions such as toothed belts, chains, etc. on the carrier disc and on the bending head.
  • a reduction of the movement tolerances of the support plate and the bending head are achievable when the sliding on the profile shafts gears with gears arranged on a bending stand transmission are engaged and the transmission transmitted the drive movement to a drive pulley and from there via gears on the support disc.
  • a compact design of the bending head and minimal movement masses are achievable when an internal gear rim transmits the drive movement via a gear on the bending head and a bevel gear on the drive axle for the bending operation.
  • the drive axle for the bending operation carries a gear which is in engagement with a arranged on the bending arm rack and a support rail leads before the Biegearmverschwenkung by a linear movement to the strand.
  • a cam can be arranged on the drive axle for the bending operation, which is in contact with a linearly movable scanner and which transmits the linear movement to a slide rail.
  • the pivoting movement of the bending arm is automatically initiated when the support rail has reached a support position on the tubular strand.
  • FIG.1-3 and 5 denotes a machine bed for an inventive bending machine.
  • a strand holding device 2 are arranged in a stationary manner and a bending stand 4 (not shown) which is displaceable in the direction of the central axis 3 of the unbent strand.
  • the example shown in Fig. 1-3 shows a single-head bending machine.
  • the single-head bending machine could be extended to a double-head bending machine.
  • a support disc 5 for a bending head 6 is arranged at the bending stand 4, as known from the prior art.
  • the support plate 5 is rotatably mounted about the central axis 3 of the unbent strand by 360 ° and provided with a radial slot 13 for insertion of the strand.
  • drive units 9, 10 and 11 are arranged stationarily at the end of the machine bed 1.
  • the drives designed in the example shown as electric motors, the following drive functions are assigned.
  • the drive 9 can move the bending stand 4 along the machine bed 1 in the direction of the arrow 14 via a ball screw spindle 12.
  • the drives 10 and 11 transmit their drive motion to profile shafts 15 and 16, e.g.
  • Fig. 4 the bending head 6 is shown without bending stand 4 (Fig. 1,2 + 5).
  • the bending head 6 receives its drive movement for the bending operation of the drive pulley 19 via a ring gear 28 to a gear 35.
  • the gear 35 is keyed on an axis 24, which feeds the drive via bevel gears 25 of the drive shaft 26 for the bending operation.
  • a bending tool 37 is clamped.
  • the drive shaft 26 carries a cam 31 which is in contact with a scanner 38 and transmits a linear movement to a slide rail 33 (Fig. 5 + 6).
  • a gear 32 is also arranged, which is in engagement with a rack 39.
  • the rack 39 transmits a in Fig. 5 + 6 support rail 29 shown a linear movement.
  • the bending head 6 is provided with a pivotable about the drive axis 26 bending arm 27 and the linearly movable in the direction of arrow 30 support rail 29 and the linear movement in the direction of arrow 34 slide rail 33.
  • the bending tool 37 is placed on the drive axle 26.
  • Fig. 7 the effect of the gear 32 and the rack 39 for the linear movement of the support rail 29 is easily recognizable.
  • the gear 32 transmits at the beginning of the bending operation, the rotational movement on the rack 39 which carries the support rail 29.
  • the support rail 29 is driven against a workpiece, not shown, and clamps this in the bending tool 37 (Fig 4,5,6) firmly.
  • the slide rail 33 receives a linear movement from the cam 31 to the bending tool 37 (FIGS. 4, 5, 6).
  • the pivoting movement of the bending arm 27 is automatically initiated by the movement standstill of the support rail 29.

Claims (10)

  1. Dispositif à cintrer des barres, en particulier des barres tubulaires, se composant d'un dispositif de fixation de barres (2) et d'un support de cintrage (4) coulissant en direction de l'axe central (3) de la barre non cintrée sur un socle de machine (1), le support de cintrage étant muni d'un disque de support (5) logé pivotant à 360° autour de l'axe central (3) pour une tête de cintrage (6) et le disque de support (5) présentant une encoche radiale (13), et se composant également de groupes de commande pour le déplacement du support de cintrage (4), pour la rotation du disque de support (5) et pour le cintrage avec la tête de cintrage (6), caractérisé en ce que les groupes de commande (9 à 11) pour le déplacement du support de cintrage (4), pour la rotation du disque de support (5) et pour le cintrage sur le socle de machine (1) sont agencés stationnaires et en ce que des arbres profilés (15, 16) destinés à la transmission du mouvement de commande des groupes de commande stationnaires (10, 11) au support de cintrage (4) sont prévus le long d'une course de déplacement (8) du support de cintrage (4) sur le socle de machine (1).
  2. Dispositif à cintrer selon la revendication 1, caractérisé en ce que les groupes de commande (9 à 11) sont fixés à une extrémité du socle de machine (1) en dehors d'une course de déplacement (8) prédéfinie du support de cintrage (4).
  3. Dispositif à cintrer selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que les groupes de commande (10, 11) sont réalisés sous forme de moteurs électriques, qui transmettent leur force de commande par l'intermédiaire des arbres profilés (15, 16) à des roues dentées (17, 18) et des transmissions telles que des courroies dentées (20, 21), des chaînes, etc., au disque de support (5) et à la tête de cintrage (6).
  4. Dispositif à cintrer selon la revendication 3, caractérisé en ce que les arbres profilés (15, 16) sont logés sur le socle de machine et les roues dentées (17, 18) sont agencées coulissantes conjointement avec le support de cintrage (4) le long des arbres profilés (15, 16).
  5. Dispositif à cintrer selon l'une quelconque des revendications 3 ou 4, caractérisé en ce que les roues dentées (17, 18) glissant sur les arbres profilés (15, 16) sont en prise avec des roues dentées d'une transmission (20, 21) agencée sur le support de cintrage et la transmission du mouvement de commande est transmissible à une poulie de commande (19) et depuis cette dernière, par l'intermédiaire de roues dentées (22, 23), au disque de support (5) et à la tête de cintrage (6).
  6. Dispositif à cintrer selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'une couronne dentée (28) transmet le mouvement de commande à une roue dentée (35) engrenant dans la couronne dentée (28) et, par l'intermédiaire d'un engrenage conique (25), à un arbre de commande (26) pour l'opération de cintrage.
  7. Dispositif à cintrer selon la revendication 6, caractérisé en ce que l'arbre de commande (26) porte une roue dentée (32), qui est en prise avec une crémaillère (39) agencée sur le bras de cintrage (27) et un rail d'appui (29) conduit vers la barre avant le pivotement du bras de cintrage via un mouvement linéaire.
  8. Dispositif à cintrer selon la revendication 6, caractérisé en ce que l'arbre de commande (26) porte une came (31), qui est en contact avec un détecteur (38) mobile linéairement et qui transmet un mouvement linéaire à une glissière (33).
  9. Dispositif à cintrer selon l'une quelconque des revendications 7 ou 8, caractérisé en ce qu'un mouvement de pivotement du bras de cintrage (27) peut être commencé automatiquement au niveau de la barre lors de l'atteinte de la position d'appui du rail d'appui (29).
  10. Dispositif à cintrer selon l'une quelconque des revendications 3 à 9, caractérisé en ce que les tolérances de mouvement déterminantes dans le processus de cintrage peuvent être optimisées grâce au choix de la démultiplication du régime du moteur via les roues dentées (17, 18) et de la transmission (20, 21) aussi bien de ce dernier à la poulie de commande (19).
EP20030029513 2003-12-20 2003-12-20 Dispositif à cintrer des barres, notamment des tuyaux Expired - Fee Related EP1543892B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50307038T DE50307038D1 (de) 2003-12-20 2003-12-20 Biegemaschine zum Biegen von Strängen, insbesondere von rohrförmigen Strängen
EP20030029513 EP1543892B1 (fr) 2003-12-20 2003-12-20 Dispositif à cintrer des barres, notamment des tuyaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030029513 EP1543892B1 (fr) 2003-12-20 2003-12-20 Dispositif à cintrer des barres, notamment des tuyaux

Publications (2)

Publication Number Publication Date
EP1543892A1 EP1543892A1 (fr) 2005-06-22
EP1543892B1 true EP1543892B1 (fr) 2007-04-11

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Family Applications (1)

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EP20030029513 Expired - Fee Related EP1543892B1 (fr) 2003-12-20 2003-12-20 Dispositif à cintrer des barres, notamment des tuyaux

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EP (1) EP1543892B1 (fr)
DE (1) DE50307038D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2208549A1 (fr) 2009-01-16 2010-07-21 WAFIOS Aktiengesellschaft Outil de cintrage rotatif à traction avec bridage excentrique
DE102009024406A1 (de) 2009-06-09 2010-12-16 Wafios Ag Rotationsbiegewerkzeug mit Exzenterklemmung
CN101961761A (zh) * 2010-11-09 2011-02-02 天津市建科机械制造有限公司 钢筋自动弯曲机的移动机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108044378B (zh) * 2018-01-09 2024-02-02 浙江东帆船舶配件有限公司 一种用扁钢加工圆弧形零件加工的装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8309569U1 (de) * 1983-03-31 1985-02-21 Lang, Thomas Peter, Dipl.-Wirtsch.-Ing., 6120 Michelstadt Maschine zum biegen von strangmaterial
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
DE3811891A1 (de) * 1988-04-09 1989-06-15 Semmlinger Werner Vorrichtung zum biegen von strangmaterial
DE29501141U1 (de) * 1995-01-25 1995-03-02 Dengler Schweistechnik Gmbh Vorrichtung zum Biegen von Rohren
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2208549A1 (fr) 2009-01-16 2010-07-21 WAFIOS Aktiengesellschaft Outil de cintrage rotatif à traction avec bridage excentrique
US8443644B2 (en) 2009-01-16 2013-05-21 Wafios Aktiengesellschaft Rotary-draw bending die with eccentric clamping
DE102009024406A1 (de) 2009-06-09 2010-12-16 Wafios Ag Rotationsbiegewerkzeug mit Exzenterklemmung
DE102009024406B4 (de) * 2009-06-09 2013-04-04 Wafios Ag Rotationsbiegewerkzeug mit Exzenterklemmung
CN101961761A (zh) * 2010-11-09 2011-02-02 天津市建科机械制造有限公司 钢筋自动弯曲机的移动机构

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Publication number Publication date
EP1543892A1 (fr) 2005-06-22
DE50307038D1 (de) 2007-05-24

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