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EP0940198B1 - Appareil de cintrage - Google Patents

Appareil de cintrage Download PDF

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Publication number
EP0940198B1
EP0940198B1 EP99102636A EP99102636A EP0940198B1 EP 0940198 B1 EP0940198 B1 EP 0940198B1 EP 99102636 A EP99102636 A EP 99102636A EP 99102636 A EP99102636 A EP 99102636A EP 0940198 B1 EP0940198 B1 EP 0940198B1
Authority
EP
European Patent Office
Prior art keywords
bending
unit
bending device
previous
segment
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
EP99102636A
Other languages
German (de)
English (en)
Other versions
EP0940198A2 (fr
EP0940198A3 (fr
Inventor
Heinrich Rapp
Eberhard Rapp
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.)
RASI MASCHINENBAU und -HANDELS GmbH
Original Assignee
RASI MASCHINENBAU und -HANDELS GmbH
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 RASI MASCHINENBAU und -HANDELS GmbH filed Critical RASI MASCHINENBAU und -HANDELS GmbH
Publication of EP0940198A2 publication Critical patent/EP0940198A2/fr
Publication of EP0940198A3 publication Critical patent/EP0940198A3/fr
Application granted granted Critical
Publication of EP0940198B1 publication Critical patent/EP0940198B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die

Definitions

  • the invention relates to a bending arrangement which has at least two bending devices, the bending tools required for carrying out the first bending function being arranged in the first bending device and the bending tools required for carrying out the second bending function being arranged in the second bending device, and the first bending device being in the feed direction of a bent part is arranged in front of the second bending device. (see e.g. DE-U-297 14 487).
  • Such a bending arrangement is known, for example, from the applicant's European patent application EP-A-0 844 033.
  • the first bending device is designed as a ring or segment bending device and the second bending device as a mandrel bending device.
  • Such an arrangement has the advantage. that spiral bending or bending of three-dimensional structures is made possible in a simple manner.
  • the ring or segment bending device arranged in front of the mandrel bending device limits the freedom of bending of the mandrel bending device. This is particularly disadvantageous, since in the non-cutting shaping different bending radii are required, which range from very small, narrow bending radii to large, tool-independent bending radii.
  • Another disadvantage of the known bending arrangement is that the end of the bent part performs an uncontrolled pivoting movement when it is bent by the first bending device, which has to be compensated for when the end of the bent part is fixed in a feed and twisting unit of the mandrel bending device.
  • the measures according to the invention advantageously create a bending arrangement which is distinguished by its great freedom from bending.
  • the before the second Bending device, in particular a mandrel bending device, arranged first bending device, in particular a ring or segment bending device can be moved out of the bending space of the mandrel bending device, is achieved in an advantageous manner that a correspondingly large swivel angle is available to the bent part during the mandrel bending process, so that in a Bending part, after large bending radii were previously applied by the ring or segment bending device, and as a result of the now free bending space of the mandrel bending device, small radii can also be introduced into the bending part. It is thus advantageously possible with the bending arrangement according to the invention to introduce small and large bending radii of the bent part in succession and / or alternately in one setting.
  • An advantageous further development of the invention provides that the ring or segment bending device is moved away from the bending space of the mandrel bending device by lowering the ring or segment bending device and / or raising the mandrel bending device.
  • This measure according to the invention has the advantage that a spatial separation of ring or segment bending device and mandrel bending device can be achieved in a particularly simple manner.
  • a further advantageous development of the invention provides that the mandrel bending device of the bending arrangement has a feed slide for the bent part, which is displaceable in the longitudinal direction of the second bending device and clamps the bent part at its end in a clamping unit, the clamping unit preferably being around the feed direction of the bent part rotatable rotating device is formed.
  • This measure according to the invention advantageously ensures that the bent part can be pushed particularly easily during the bending process and, if necessary, rotated about its axis. In this way, a simple change of the bending direction, in particular a transition from a left-hand bend to a right-hand bend or vice versa, is possible in a particularly advantageous manner.
  • a further advantageous development of the invention provides that the feed slide of the mandrel bending device is designed such that it can be deflected in a lateral direction which is essentially orthogonal to the feed direction of the bent part.
  • Such a measure according to the invention has the advantage that it is particularly easy to compensate for the pivoting-out movement of the bent part which arises when the bent part is bent during ring or segment bending.
  • the ring or segment bending device has a rotatable bending table.
  • This measure according to the invention has the advantage that compensation of the pivoting-out movement of the bent part when bending in the ring or segment bending method can also be achieved in a particularly simple manner.
  • a further advantageous development of the invention provides that a compensating movement in the longitudinal direction of the bent part can be carried out by the feed slide.
  • This measure according to the invention also serves for particularly simple compensation of the pivoting-out movement of the bent part.
  • a further advantageous development of the invention provides that the ring or segment bending device is designed to be displaceable in a lateral direction which is essentially orthogonal to the feed direction of the bent part, it being provided in particular that the ring or segment bending device has rollers which are guided in rails ,
  • Such a measure according to the invention has the advantage that this enables both a displacement of the ring or segment bending device for moving it away from the bending space of the mandrel bending device and a compensation of the pivoting movement that occurs when a bent part is bent.
  • the above-mentioned displaceability furthermore enables the bent part to be simply removed from the tools of the ring or segment bending device can be moved out.
  • the bending arrangement 1 shown in FIG. 1 is basically divided into a first bending device 2 and a second bending device 3 separated from it.
  • the first bending device 2 is designed as a ring or segment bending device and has the bending tools, in particular two, required to carry out a ring or segment bending process
  • Counter-holding rollers 4a, 4b and a bending roller 4c which can be advanced by a bending cylinder 5 to bend the bent part 31 in the direction of the counter-holding rollers 4a, 4b.
  • the bending tools 4a, 4b, 4c, 5 are driven by a preferably hydraulic and pneumatic drive unit 6, the control of the counter-holding rollers 4a, 4b and the bending roller 4c and the movement of the bending cylinder 5 being controlled by a control device 7 by control signals S.
  • a control device 7 by control signals S.
  • the second bending device 3 which is separated from the first bending device 2, is designed as a mandrel bending device which has mandrel bending tools 11.
  • the arrangement and design of the in the second bending device 3 arranged mandrel bending tools 11 are known per se to the person skilled in the art, so that they do not have to be described in more detail here.
  • the above-described arrangement of the first and second bending devices 2, 3 in principle now makes it possible, in principle, to transition from the first to the second bending function, i.e. from a ring or segment bending to mandrel bending, without any special mechanical conversions and therefore without a long changeover time
  • lines 14, 15 of the force output 8 and the control outlet 9 of the first bending device 2 are preferably connected to the force input 12 and the control input 13 of the second bending device 3 via quick-release couplings 17, so that the drive force generated by the drive unit 6 can be selectively increased the bending tool 4a-4c, 5 of the first bending device 2 or the bending tools 11 of the second bending device 3.
  • the connection of the control output 9 of the basic unit 2 with the line 15 to the control input 13 of the bending device 2 is achieved in that the movement of the bending tools 11 of the second bending device 3 can also be controlled by the control device 7.
  • the bending arrangement 1 described thus enables ring or segment bending and mandrel bending subsequently or alternately in a single bent part, without the clamping of the bent part having to be changed.
  • the problem may arise that due to the arrangement of the first bending device 2 in front of the second bending device 3, the bending space of the second bending device 3 is not sufficiently large to ensure the freedom from bending required to carry out the mandrel bending process.
  • Such freedom from bending is particularly necessary in the dome bending process, since in this the bending part 31 swings out according to the bending angle and this swivel space must be free of obstacles, since otherwise the mandrel bending process cannot be carried out without collisions.
  • the first bending device 2 can be moved out of the bending space of the second bending device 3.
  • This advantageous function of the first bending device 2 is preferably achieved in that - after the bending tools 4a-4c, 5 of the first bending device 2 have been moved away from the bending part 31 so that the bending part 31 is essentially free - the two bending devices 2, 3 have a relative movement execute that causes the first bending device 2 can be moved away from the bending space of the second bending device 3. This is particularly possible. that either the first bending device 2 is lowered and / or the second bending device 3 is raised, or vice versa.
  • the first bending device 2 is moved to the side via rollers 20 mounted in rails S1, S2.
  • the reverse process - the transition from the second bending device 3 to the first bending device 2 - takes place in a corresponding manner by moving the first bending device 2 or the second bending device 3 under or over the bending part 31, then raising or lowering it.
  • the bending arrangement 1 also has a feed slide 35 for the bending part 31, which is preferably equipped with a rotating device 30, which makes it possible to rotate the bending part 31 about its longitudinal axis A.
  • a twisting device 30, which clamps the end 31 "of the bent part 31, is known per se and therefore does not have to be described in more detail.
  • a direction of rotation 30 has the advantage that it is particularly easy to change from a left-hand bend to a right-hand bend, ie the direction of rotation 30 makes it possible.
  • a swiveling-out movement of the end 31 "of the bending part 31 occurs when the bending part 31 is bent.
  • the rotating device 30 is arranged on the feed slide 35 in such a way that it is in a direction toward the feed direction of the feed slide 35 is essentially orhogonal transverse direction Q movable.
  • the feed carriage 35 stands on a bridge (not shown) which is movable up and down, and on which a rail is installed so that the feed carriage 31 can be moved laterally back and forth , Due to this construction, it is possible that an automatic change from the first bending device 2 to the second bending device 3 or vice versa is possible in one setting, and that a compensating movement is achieved when bending by the first bending device 2.
  • the first bending device 2 is designed such that the first bending device 2 is movable about a vertical axis, so that the bending tools 4a-4c, arranged on a bending table 2a, 5 align with the bending part 31 as a result of the rotational mobility given by the mobility of the first bending device 2.
  • This function is preferably achieved in that the bending table 2a is rotatably arranged on a lower part 2b of the first bending device 2 which has the rollers 20.
  • the above-mentioned guidance of the first bending device 2 via its rollers 20 in rails S1, S2 has the further advantage that it prevents the relative distance between the first and second bending devices 2, 3 from changing during ring or segment bending.
  • the feed carriage 35 which causes the feed movement of the bent part 31 during mandrel bending is separated from its drive (not shown) during ring or segment bending. This disengagement of the feed carriage 35 causes the feed carriage 35 to perform a compensating movement during ring or segment bending.

Landscapes

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

Claims (11)

  1. Agencement de cintrage qui présente au moins deux mécanismes de cintrage (2, 3), les outils de cintrage (4a, 4b, 4c, 5) requis pour la mise en oeuvre de la première fonction de cintrage sont disposés dans le premier mécanisme de cintrage (2) et les outils de cintrage (11) requis pour la mise en oeuvre de la deuxième fonction de cintrage sont disposés dans le deuxième mécanisme de cintrage (3), et le premier mécanisme de cintrage 2 étant disposé, dans la direction d'avance d'un élément de cintrage (31), avant le deuxième mécanisme de cintrage (3), les deux mécanismes de cintrage (2, 3) étant mobiles l'un par rapport à l'autre de telle sorte qu'un des deux mécanismes de cintrage (2), respectivement (3) est à même de s'écarter de l'espace de cintrage de l'autre mécanisme de cintrage (3), respectivement (2), caractérisé par le fait que pour écarter de le premier mécanisme de cintrage (2) de l'espace de cintrage du deuxième mécanisme de cintrage (3), le premier mécanisme de cintrage (2) est abaissé et/ou le deuxième mécanisme de cintrage (3) est soulevé.
  2. Agencement de cintrage selon la revendication 1, caractérisé en ce que les outils de cintrage (4a - 4c, 5) du premier mécanisme de cintrage (2) peuvent s'écarter de l'élément de cintrage (31).
  3. Agencement de cintrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier mécanisme de cintrage (2) est à même de se déplacer en position essentiellement perpendiculaire par rapport à la direction d'avance de l'élément de cintrage (31).
  4. Agencement de cintrage selon la revendication 3, caractérisé en ce que le premier mécanisme de cintrage (2) présente des galets (20) aptes à venir se disposer dans des rails (S1, S2).
  5. Agencement de cintrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le deuxième mécanisme de cintrage (3) présente un chariot d'avance (35) pour l'élément de cintrage (31).
  6. Agencement de cintrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le deuxième mécanisme de cintrage (3) présente un mécanisme de rotation (30) pour l'élément de cintrage (31), par lequel l'élément de cintrage (31) est à même d'effectuer une rotation autour de son axe longitudinal (A).
  7. Agencement de cintrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier mécanisme de cintrage (2) présente une partie inférieure (2b) présentant les galets (20), sur laquelle est disposée en rotation une table de cintrage (2a) du premier mécanisme de cintrage (2).
  8. Agencement de cintrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier mécanisme de cintrage (2) est réalisé sous la forme d'un mécanisme annulaire ou segmentaire.
  9. Agencement de cintrage selon la revendication 8, caractérisé en ce que les outils de cintrage du premier mécanisme de cintrage (2) présentent des galets de butée (4a, 4b). et un galet de cintrage (4c) qui est disposé sur un cylindre de cintrage (5) et qui peut être orienté via ce dernier (5) dans la direction des galets de butée (4a, 4b).
  10. Agencement de cintrage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'agencement de cintrage (1) présente un agrégat d'entraînement (6) et un mécanisme de commande (7) aussi bien pour la mise en oeuvre de la première que pour la deuxième fonction de cintrage.
  11. Agencement de cintrage selon la revendication 10, caractérisé en ce qu'une sortie (8) de l'agrégat d'entraînement (6) et une sortie de commande (9) du mécanisme de commande (7) peuvent être reliées via des conduits (14, 15) à une entrée de force (12), respectivement à une entrée de commande (13) du deuxième mécanisme de cintrage (3), de préférence via des couplages rapides (17).
EP99102636A 1998-03-06 1999-02-12 Appareil de cintrage Expired - Lifetime EP0940198B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19809694 1998-03-06
DE19809694 1998-03-06

Publications (3)

Publication Number Publication Date
EP0940198A2 EP0940198A2 (fr) 1999-09-08
EP0940198A3 EP0940198A3 (fr) 2000-04-05
EP0940198B1 true EP0940198B1 (fr) 2004-04-28

Family

ID=7859995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99102636A Expired - Lifetime EP0940198B1 (fr) 1998-03-06 1999-02-12 Appareil de cintrage

Country Status (2)

Country Link
EP (1) EP0940198B1 (fr)
DE (1) DE59909276D1 (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29714487U1 (de) * 1997-08-13 1997-10-16 Rasi Maschinenbau u. -handels-GmbH, 75428 Illingen Biegemaschine mit mindestens zwei Biegefunktionen

Also Published As

Publication number Publication date
EP0940198A2 (fr) 1999-09-08
DE59909276D1 (de) 2004-06-03
EP0940198A3 (fr) 2000-04-05

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