EP3439806B1 - Machine à cintrer - Google Patents

Machine à cintrer Download PDF

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Publication number
EP3439806B1
EP3439806B1 EP17715729.4A EP17715729A EP3439806B1 EP 3439806 B1 EP3439806 B1 EP 3439806B1 EP 17715729 A EP17715729 A EP 17715729A EP 3439806 B1 EP3439806 B1 EP 3439806B1
Authority
EP
European Patent Office
Prior art keywords
bending machine
blade
bending
feed device
cutting device
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.)
Active
Application number
EP17715729.4A
Other languages
German (de)
English (en)
Other versions
EP3439806A1 (fr
Inventor
Alexander STUFLESSER
Helmut Stofner
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.)
Progress Holding AG
Original Assignee
Progress Holding 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 Progress Holding AG filed Critical Progress Holding AG
Publication of EP3439806A1 publication Critical patent/EP3439806A1/fr
Application granted granted Critical
Publication of EP3439806B1 publication Critical patent/EP3439806B1/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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
    • 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
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
    • B21K27/06—Cutting-off means; Arrangements thereof

Definitions

  • the invention relates to a bending machine for wire, rod or strip-shaped material, in particular for the production of ironing for reinforced concrete construction, according to the preamble of claim 1.
  • Bending machines are known from the prior art, wherein the knife of the cutting device is arranged on an adjustable slide, which moves relative to a fixed counter-blade, wherein the counter-blade is formed on the feeding device.
  • the problem with this is that the separated piece of material from the cutting device, in particular when it comes to materials with large thicknesses and when the cutting operation is carried out at a high relative speed of the knife relative to the counter knife, is uncontrollably thrown away from the bending head.
  • the cut piece of material usually has to be picked up manually, which is dangerous due to the uncontrolled movement.
  • a first approach to solving this problem reveals the EP 0 386 456 A1 in the form of a bending machine with a feeding device, which has a first end facing a bending head and a second, opposite end, wherein at the first end a knife of a cutting device is arranged and at the second end the feeding device is pivotally mounted about a pivot point on the support frame, so that through a Pivoting movement of the feeder about the fulcrum a relative movement between the knife and a counter blade of the cutting device for performing a cut isberichtufbar.
  • the counter blade of the cutting device is arranged at a first distance to a bending head and immovably connected to a support frame, and arranged the knife of the cutting device on the relative to the support frame movable feed device, wherein the movable feed device has a second distance to the bending head, which is greater than that first distance of the counter knife to the bending head is.
  • the part of the cutting device, which is arranged closer to the bending head thus remains at rest.
  • the pivoting movement of the feeding device is in the EP 0 386 456 A1 revealed construction uncontrolled and subject to stability problems.
  • the objective technical object of the present invention is therefore to provide a bending machine in which the described disadvantages of the prior art are avoided and in which the pieces of material separated by the cutting device perform, if at all, only a slight movement during the cutting process, whereby it Another consequence is possible to remove the separated pieces of material fully automated and to provide guide devices for the material to be bent in order to increase the precision in the bending process.
  • the movable device on which the at least one blade of the cutting device is arranged is the at least one feeding device.
  • the at least one feed device has a first end facing the at least one bending head and a second, opposite end, wherein the at least one blade of the cutting device is arranged at the first end and the at least one feed device is pivotable about one at the second end Fulcrum is mounted on the support frame, so that a relative movement between the at least one knife and the at least one counter knife of the cutting device for performing a cut can be caused by a pivoting movement of the at least one feed device about the pivot point.
  • the relative movement required between the at least one blade and the at least one counter knife of the cutting device required for carrying out the cut can thus be brought about by a pivoting movement of the at least one feeding device.
  • a supplementary measure of the invention is that a lever arm is provided, which is connected at one end to the first end of the at least one feed device and is pivotally mounted at an opposite end about a pivot point on the support frame of the bending machine. It is thereby provided that the lever arm and the at least one feed device enclose an angle of substantially 90 °.
  • the lever arm may have a length of 500 mm to 2000 mm, preferably a length of 700 mm to 1500 mm.
  • a preferred embodiment is that a pivot drive is provided, which is connected via a lever mechanism to the first end of the at least one feed device, preferably wherein the Lever mechanism is designed as a push lever mechanism and / or is connected via an eccentric shaft with the pivot drive in connection.
  • the invention provides the prerequisite for arranging at least one, preferably exchangeable, guide device for the material to be bent in the region of the at least one counter knife of the cutting device, which is also provided according to a preferred embodiment. This can increase the precision of the bending process.
  • a particularly advantageous embodiment of the invention consists in that at least one holding device for holding a piece of material separated from the cutting device is arranged in the region of the at least one counter knife of the cutting device.
  • the piece of material separated from the cutting device thus not only does not perform any uncontrolled movement, but is also held so that it remains in its position during and after the cutting operation. It is conceivable that the piece of material is then ejected only by pushing out with the subsequent strand of material. This facilitates the removal of the bent pieces of material by means of ironing systems or robots.
  • an adjusting device for adjusting the distance of the at least one feeding device from the at least one counter knife of the cutting device is provided, preferably wherein the adjusting device comprises a threaded rod, includes a nut and a lock nut.
  • the material in the at least one feed device becomes something during the pivotal movement of the at least one feed device bent.
  • this bending is negligible, and indeed the more the greater the distance between the first end and the second end of the at least one feeding device, wherein too great a distance in turn adversely affects the size of the bending machine and the feed of the material.
  • a favorable compromise is that the first end and the second end of the at least one feed device has a distance of 500 mm to 2000 mm, preferably a distance of 700 mm to 1500 mm.
  • the bending machine has at least one straightening device, preferably roller straightening device, and the material directed by the at least one straightening device can be fed to the at least one bending head with the at least one strapping device, preferably wherein the second end of the at least a feed device facing the at least one straightening device, and / or the bending machine has two successively arranged straightening devices, which are arranged at an angle of substantially 90 ° to each other.
  • Bending machine 1 shown comprises a bending plate 11, which is arranged on a base frame 12.
  • the bending plate 11 and the base frame 12 together represent a support frame for the components of the bending machine 1.
  • On the support frame 11, 12 are viewed in the feed direction 36 of the processed wire, rod or belt-shaped material 2, two roller straightening devices 33 and 34, wherein these roller straightening devices 33 and 34 are arranged rotated by an angle 35 of substantially 90 ° relative to each other.
  • the directed by the Rollenrichtvoriquesen 33 and 34 material 2 is subsequently fed via a feed device 4 a bending head 3.
  • a cutting device 5 is arranged, formed from at least one knife and at least one counter knife, wherein the at least one knife and the at least one counter knife are movable relative to each other.
  • this cutting device 5 a bent in a certain way wire, rod or strip-shaped material can be separated with a certain length of the directed strand of material.
  • the bending machine 1 serves to produce stirrups for reinforced concrete construction from a wire-shaped material 2 made of steel.
  • the FIGS. 2 to 5 show the structure of the feeding device 4 and the cutting device 5:
  • the feeding device 4 has a first end 8, which faces the bending head 3.
  • the feeding device 4 further has a second, opposite end 9, which faces the straightening device 34.
  • the wire-shaped material 2 directed by the straightening devices 33 and 34 enters the feeding device 4 at the second end 9 and leaves it at the first end 8.
  • the feed direction of the material 2 is provided with the reference numeral 36.
  • the first end 8 and the second end 9 of the feeding device 4 has a distance 32 of 500 mm to 2000 mm, preferably from 700 mm to 1500 mm.
  • the feeder 4 is pivotally mounted about a pivot point 10 on the support frame 11, 12. For this purpose, a ball joint is provided.
  • the two other spatial directions oriented perpendicular to the feed direction 36 are provided with the reference numerals 37 and 38.
  • the knife 6 of the cutting device is arranged.
  • a counter knife holder 41 is arranged, which is fixedly connected to the support frame 11, 12. With the counter knife holder 41 is arranged in the position of use of the bending machine 1 above the wire line receptacle 26 for the counter knife 7 and arranged below the wire line replaceable guide device 24 is firmly connected.
  • a lever arm 13 is provided, which is connected at one end 14 to the first end 8 of the feeder 4 and is pivotally mounted at an opposite end 15 about a pivot point 16 on the support frame 11, 12 of the bending machine 1.
  • a ball joint is also provided.
  • the lever arm 13 and the feed device 4 enclose an angle 17 of substantially 90 °, and thus extends in the spatial direction 37.
  • the lever arm 13 has a length 18 of 500 mm to 2000 mm, preferably a length 18 of 700 mm to 1500 mm up.
  • a pivot drive 19 is provided, which is connected via a lever mechanism 21, 22, 23 with the first end 8 of the feeder 4, wherein the lever mechanism 21, 22, 23 is designed as a push lever mechanism and an eccentric shaft 20 with the pivot drive 19 in connection stands.
  • the lever mechanism 21, 22, 23 is supported by a lever 22 on the support frame 11, 12 of the bending machine 1 from.
  • FIG. 3 is a dashed line schematically shows the bending head 3 together with its distances 44 and 45 to the counter blade or to the knife of the cutting device.
  • the first distance 44 of the fixed counter blade 7 to the bending head 3 is smaller than the second distance 45 of the movable blade 6 to the bending head 3.
  • the bending head 3 - in this embodiment Immediately facing part of the cutting device thus fades in a cutting operation at rest.
  • FIG. 5 shows the position of the feeding device 4 before the cut in solid lines and the position of the feeding device 4 after the section in dashed lines.
  • the feeding device 4 has a central guide channel 39, which is widened at the second end 9 of the feeding device 4 in order to facilitate the introduction of the material strand 2 directed by the straightening devices 33 and 34 into the feeding device 4.
  • the material strand 2 is guided through the hole 6 through a hole 40 with a chamfer.
  • an adjustment device 27, 28, 29, 30 is provided, which comprises a threaded rod 27 which is supported on a fixed to the support frame 11, 12 connected plate 29 and in a certain position by means of a nut 28 and a lock nut 30 is fixed.
  • the counter knife holder 26 and the guide device 24 constitute a holding device for holding a piece of material separated from the cutting device.
  • FIG. 6 shows an alternative embodiment in which the guide device 24 has been replaced by a nose-shaped guide device 25. This protrudes into the region of the bending head 3 and ensures that the material strand 2 is fed more precisely to the bending head 3, more precisely the bending mandrel 42 and the bending pin 43 which is movable in a circular path in contrast thereto.

Landscapes

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

Claims (12)

  1. Machine de pliage (1) pour un matériau en forme de fil, de barre ou de bande (2), plus particulièrement pour la fabrication d'étriers pour la construction en béton armé, avec un châssis porteur (11, 12), au moins une tête de pliage (3), au moins un dispositif d'alimentation (4), avec lequel le matériau à plier (2) peut être amené vers l'au moins une tête de pliage (3), et un dispositif de coupe (5) disposé entre l'au moins une tête de pliage (3) et l'au moins un dispositif d'alimentation (4), constitué d'au moins une lame (6) et d'au moins une contre-lame (7), l'au moins une lame (6) et l'au moins une contre-lame (7) étant mobiles l'une par rapport à l'autre, l'au moins une contre-lame (7) du dispositif de coupe (5) étant disposée à une première distance (44) de la tête de pliage (3) et reliée de manière fixe avec le châssis porteur (11, 12) et l'au moins une lame (6) du dispositif de coupe (5) étant disposé sur un dispositif (4) mobile par rapport au châssis porteur (11, 12), le dispositif mobile (4) présentant une deuxième distance (45) par rapport à la tête de pliage (3), qui est supérieure à la première distance (44) de l'au moins une contre-lame (7) par rapport à la tête de pliage (3), le dispositif mobile (4) sur lequel l'au moins une lame (6) du dispositif de coupe (5) est disposée est l'au moins un dispositif d'alimentation (4), l'au moins un dispositif d'alimentation (4) comprenant une première extrémité (8) orientée vers l'au moins une tête de pliage (3) et une deuxième extrémité (9) opposée, l'au moins une lame (6) du dispositif de coupe (5) étant disposée au niveau de la première extrémité (8) et l'au moins un dispositif d'alimentation (4) étant logé de manière pivotante autour d'un centre de rotation (10) sur le châssis porteur (11, 12) au niveau de la deuxième extrémité (9), de façon à ce que, grâce à un mouvement de pivotement de l'au moins un dispositif d'alimentation (4) autour du centre de rotation (10), un mouvement relatif entre l'au moins une lame (6) et l'au moins une contre-lame (7) du dispositif de coupe (5) puisse être réalisée afin d'effectuer une coupe, caractérisé en ce qu'un bras de levier (13) est prévu, qui est relié à une extrémité (14) avec la première extrémité (8) de l'au moins un dispositif d'alimentation (4) et qui est logé, à une extrémité opposée (15), de manière pivotante autour d'un centre de rotation (16) sur le châssis porteur (11, 12) de la machine de pliage (1), le bras de levier (13) et l'au moins un dispositif d'alimentation (4) formant un angle (17) globalement égal à 90°.
  2. Machine de pliage (1) selon la revendication 1, le bras de levier (13) présentant une longueur (18) de 500 mm à 2000 mm, de préférence une longueur (18) de 700 mm à 1 500 mm.
  3. Machine de pliage (1) selon la revendication 1 ou 2, un entraînement de pivotement (19) étant prévu, qui est relié, par l'intermédiaire d'un mécanisme à leviers (21, 22, 23) avec la première extrémité (8) de l'au moins un dispositif d'alimentation (4).
  4. Machine de pliage (1) selon la revendication 3, le mécanisme à leviers (21, 22, 23) étant conçu comme un mécanisme à leviers de poussée et/ou étant relié par l'intermédiaire d'un arbre excentrique (20) avec l'entraînement de pivotement (19).
  5. Machine de pliage (1) selon l'une des revendications 1 à 4, moyennant quoi, au niveau de l'au moins une contre-lame (7) du dispositif de coupe (5), est disposé au moins un dispositif de guidage (24, 25), de préférence interchangeable, pour le matériau à, plier (2).
  6. Machine de pliage (1) selon l'une des revendications 1 à 5, moyennant quoi, au niveau de l'au moins une contre-lame (7) du dispositif de coupe (5), est disposé au moins un dispositif de maintien (24, 26) pour le maintien d'un morceau de matériau sectionné par le dispositif de coupe (5).
  7. Machine de pliage (1) selon l'une des revendications 1 à 6, moyennant quoi, au niveau de la deuxième extrémité (9) de l'au moins un dispositif d'alimentation (4), est prévu un dispositif de réglage (27, 28, 29, 30) pour le réglage de la distance (31) entre l'au moins un dispositif d'alimentation (4) et l'au moins une contre-lame (7) du dispositif de coupe (5).
  8. Machine de pliage (1) selon la revendication 7, le dispositif de réglage (27, 28, 29, 30) comprenant une tige filetée (27), un écrou (28) et un contre-écrou (30).
  9. Machine de pliage (1) selon l'une des revendications 1 à 8, la première extrémité (8) et la deuxième extrémité (9) de l'au moins un dispositif d'alimentation (4) présente une distance (32) de 500 mm à 2 000 mm, de préférence une distance (32) de 700 mm à 1 500 mm.
  10. Machine de pliage (1) selon l'une des revendications 1 à 9, la machine de pliage (1) comprenant au moins un dispositif de dressage (33, 34), de préférence un dispositif de dressage à rouleaux, et le matériau (2) dressé par l'au moins un dispositif de dressage (33, 34) pouvant être amené avec l'au moins un dispositif d'alimentation (4) vers l'au moins une tête de pliage (3).
  11. Machine de pliage (1) selon la revendication 10 et l'une des revendications 1 à 8, la deuxième extrémité (9) de l'au moins un dispositif d'alimentation (4) étant orientée vers l'au moins un dispositif de dressage (33, 34).
  12. Machine de pliage (1) selon la revendication 10 ou 11, la machine de pliage (1) comprenant deux dispositifs de dressage (33, 34) disposés l'un derrière l'autre qui sont tournés l'un par rapport à l'autre d'un angle (35) globalement égal à 90°.
EP17715729.4A 2016-04-08 2017-04-05 Machine à cintrer Active EP3439806B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50294/2016A AT518420B1 (de) 2016-04-08 2016-04-08 Biegemaschine
PCT/EP2017/058102 WO2017174654A1 (fr) 2016-04-08 2017-04-05 Machine à cintrer

Publications (2)

Publication Number Publication Date
EP3439806A1 EP3439806A1 (fr) 2019-02-13
EP3439806B1 true EP3439806B1 (fr) 2019-11-20

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ID=58489357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17715729.4A Active EP3439806B1 (fr) 2016-04-08 2017-04-05 Machine à cintrer

Country Status (3)

Country Link
EP (1) EP3439806B1 (fr)
AT (1) AT518420B1 (fr)
WO (1) WO2017174654A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111403673B (zh) * 2020-03-30 2024-05-07 无锡先导智能装备股份有限公司 极耳成型方法和极耳成型装置
EP4292729A1 (fr) * 2022-06-15 2023-12-20 Progress Maschinen & Automation AG Procédé de changement automatique d'au moins une matrice de cintrage et/ou d'au moins une buse de guidage d'une machine à cintrer
CN115502254B (zh) * 2022-11-21 2023-03-24 烟台亿众智能科技有限公司 一种汽车配件加工用高精度折弯设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1234184B (it) * 1989-03-06 1992-05-05 Piegatrici Macch Elettr Gruppo cesoia.
US8631674B2 (en) * 2008-12-17 2014-01-21 Aim, Inc. Devices, systems and methods for automated wire bending
DE102009024075B4 (de) * 2009-06-05 2012-11-29 Wafios Ag Biegevorrichtung für stabförmige Werkstücke
ITBO20110293A1 (it) * 2011-05-23 2012-11-24 Schnell Spa Apparecchiatura per la realizzazione di staffe
DE102011106942A1 (de) * 2011-07-08 2013-01-10 Wafios Ag Biegevorrichtung für stabförmige Werkstücke

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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Also Published As

Publication number Publication date
AT518420A4 (de) 2017-10-15
AT518420B1 (de) 2017-10-15
WO2017174654A1 (fr) 2017-10-12
EP3439806A1 (fr) 2019-02-13

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