EP0439120B1 - Dispositif de transfert dans des machines pour le formage progressive des pièces, notamment dispositif de transfert transversal dans des presses à postes multiples - Google Patents

Dispositif de transfert dans des machines pour le formage progressive des pièces, notamment dispositif de transfert transversal dans des presses à postes multiples Download PDF

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Publication number
EP0439120B1
EP0439120B1 EP91100760A EP91100760A EP0439120B1 EP 0439120 B1 EP0439120 B1 EP 0439120B1 EP 91100760 A EP91100760 A EP 91100760A EP 91100760 A EP91100760 A EP 91100760A EP 0439120 B1 EP0439120 B1 EP 0439120B1
Authority
EP
European Patent Office
Prior art keywords
gripper fingers
gripper
transfer
slides
track
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
EP91100760A
Other languages
German (de)
English (en)
Other versions
EP0439120A3 (en
EP0439120A2 (fr
Inventor
Werner Dipl.-Ing. Gödtner
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.)
Gebr Hilgeland & Co GmbH
Original Assignee
Gebr Hilgeland & Co 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 Gebr Hilgeland & Co GmbH filed Critical Gebr Hilgeland & Co GmbH
Publication of EP0439120A2 publication Critical patent/EP0439120A2/fr
Publication of EP0439120A3 publication Critical patent/EP0439120A3/de
Application granted granted Critical
Publication of EP0439120B1 publication Critical patent/EP0439120B1/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
    • 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
    • B21K27/02—Feeding devices for rods, wire, or strips
    • B21K27/04—Feeding devices for rods, wire, or strips allowing successive working steps

Definitions

  • the invention relates to a transfer device on machines for the progressive shaping of workpieces, in particular a cross conveyor device on multi-stage presses.
  • a transfer device of this type is described in German Offenlegungsschrift 35 23 323.
  • a disadvantage of the construction according to German Offenlegungsschrift 35 23 323 is the fact that the pivoting movement of the gripper fingers is rigidly predetermined as a function of the movement of the gripper fingers perpendicular to the transfer device because of the handlebar construction provided there.
  • a movement law for the gripper fingers, which is fixed in its structure, is by no means the desired optimal solution for the movement sequence of the gripper or the grippers in all applications on forming machines or multi-stage presses.
  • the gripper device described here has two two-armed levers as gripper fingers, which have a relatively high mass.
  • the additional transmission elements required mean a further increase in the moving masses, which is disadvantageous because it causes significantly lower working speeds and thus slower and more expensive production.
  • the scissor-shaped opening of the crossed gripper fingers requires a large width.
  • fast-working multi-stage presses that require a small die spacing, it is not possible or only with great effort to arrange the grippers next to one another.
  • a transfer device which has two non-crossing gripping arms, on each of which a roller is attached, which is placed against a curved plate.
  • the curved plate has the function of guiding the rollers according to its shape.
  • the supports of a gripper arm are formed by a swivel joint and an eccentric bolt.
  • an additional coupling element is required for each gripper arm, which means a complex and therefore expensive construction and additional masses to be moved. As a result, the device becomes more expensive both in terms of its manufacture and in use on the forming machine, since only significantly lower working speeds can be achieved.
  • the present invention has for its object to provide in a transfer device of the type mentioned in the possibility of optimally adapting the law of motion with simple construction and small moving masses for the gripper fingers according to individual requirements.
  • the curved tracks Due to the closed design of the curved tracks as backdrops, they can serve both as a guide and as a support element, as a result of which a simple and therefore inexpensive construction is achieved. There will be no additional moving masses required, which enables higher working speeds (shorter work cycles) and thus faster and cheaper production.
  • Claims 2 to 6 and 8 and 9 specify further advantageous or expedient refinements of the transfer device according to the invention.
  • the transfer device essentially consists of a transfer carrier 2 with gripper devices 6, 7 and 8.
  • the gripper devices 6, 7 and 8 each have gripper fingers 9, 10 or 11, 12 or 13, 14 assigned to one another in pairs on.
  • the gripper devices 6, 7 and 8 attached to the transfer carrier 2 are moved in a manner known per se - and similar to that described, for example, in German Offenlegungsschrift 35 23 323 - in the sense of arrow 52 in FIG. 1, so that the free ends of the inserts 53 to 58 fastened to the gripper fingers 9 to 14 can be moved back and forth between pick-up and discharge positions 3, 4, 5 and 59 in a manner known per se. This back and forth movement takes place in an imaginary transfer plane, designated 15 (see FIG. 2).
  • the gripper fingers 9 to 14 are via corresponding bearing holes, for. B. bearing hole 40 for the gripper fingers 10 (see FIG. 2), pivotably mounted on pivot pins 16, 17 or 18, 19 or 20, 21, which pivot pins form the first supports for the gripper fingers.
  • the pivot pins 16 to 21 are located on extensions of plungers which are under the action of compression springs, for example extension 41 on the plunger 42 with compression spring 43 (see FIG. 2).
  • the gripper fingers 9 to 14 have pins 22 to 27.
  • the pins 22 to 27 each carry one of rollers 28 to 33.
  • the rollers 28 to 33 run on slides 34a, 34b or 35a, 35b or 36a, 36b, which slides each represent the second supports for the gripper fingers 9 to 14.
  • Compression springs 37, 38 and 39 are provided between the gripper finger pairs 9, 10 and 11, 12 and 13, 14, respectively, which cause the rollers 28 to 33 of the associated gripper finger pairs always rest with sufficient pressure on the associated link 34a to 36b.
  • the guide surfaces 34a to 36b functionally parallel with respect to the running of the rollers 28 to 33 - of course with a certain, slight spacing to the roles 28 to 33 - are assigned.
  • Such guide surfaces are designated 64a, 65a, 65b, 66a and 66b in the drawing.
  • the plungers for the gripper fingers are movably guided in the direction of arrow 62 between upper and lower guide bushes, for example guide bushes 60 and 61 for the plunger 42.
  • a two-armed lever is provided as a control element for the plunger, which is pivotably mounted on the transfer carrier as shown in FIG. 2 in a manner known per se and likewise in a manner known per se via a roller from an Machine clock moving ruler 50 is controlled, as is known from the prior art.
  • the lever 44 is provided as a control element for the tappet 42, one arm 45 of which engages with its free end in a recess 46 of the tappet 42 and rests there against a pressure surface 47 against the action of the compression spring 43.
  • the other, designated 48 arm of the lever 44 has at its free end a roller 49, via which the lever 44 is controlled by the ruler 50 approximately in the direction of arrow 63a in the machine cycle.
  • the ruler 50 is located at the free end of a lever 51 (not shown), which is pivotably mounted and driven in the machine frame. This known construction enables the movement of the transfer carrier 2 to be superimposed on the gripper devices 6 to 8 in the direction of the arrow 52 with the control movements of the lever 51 in the direction of the arrow 63a.
  • pin-shaped path scanners are used instead of rollers for scanning the scenes or curves. It is possible to provide the curved tracks on the transfer girder and to provide the gripper fingers with appropriate track scanners.
  • the gripper fingers are at least up to the region of the second supports on both sides in a correspondingly fork-shaped end of the transfer carrier - in the case of the exemplary embodiment between the guide plates 63 and 64 - each to be guided in a plane parallel to the transfer plane 15.
  • the arrangement can also be such that a separate compression spring is provided for the two gripper fingers of a pair of gripper fingers, one of which Ends as in the exemplary embodiment on the gripper fingers and their other ends are supported on a stop mounted on the guide plates 63, 64, which can follow the movements of the gripper fingers in the direction of arrow 62.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Specific Conveyance Elements (AREA)
  • Press Drives And Press Lines (AREA)
  • Manipulator (AREA)
  • Discharge By Other Means (AREA)
  • Tyre Moulding (AREA)
  • Forging (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Claims (9)

  1. Dispositif de transfert (1) dans des machines de formage progressif de pièces, en particulier dispositif de transport transversal dans des presses à étages multiples,
    a) avec un support de transfert (2) qui est mobile en vaet-vient entre une position de réception et une position de livraison,
    b) avec des doigts de griffes allongées (9, 10 ou respectivement 11, 12 ou respectivement 13, 14) adjoints les uns au autres par paires, montées sur le support de transfert (2), ne se croisant pas, formant ensemble chaque fois une griffe,
    c) avec chaque fois un premier appui (16, 17, 18, 19, 20, 21) pour les doigts de griffes (9 à 14) sur un coulisseau (42), disposé à l'extrémité libre (53, 54, 55, 56, 57, 58), permettant un pivotement des doigts de griffes (9 à 14) dans un plan de transfert (15) et un déplacement des doigts de griffes (9 à 14) essentiellement transversalement à la direction de transfert (52),
    d) avec chaque fois un ressort (43) agissant sur le coulisseau (42) dans le sens d'une fermeture de la griffe,
    e) avec chaque fois un élément de commande (44) agissant sur le coulisseau (42) à l'encontre de l'action du ressort (43),
    f) avec chaque fois des moyens de guidage, qui sont réalisés sous forme de chemins incurvés (34a 34b ou respectivement 35a, 35b ou respectivement 36a, 36b) avec détecteur de chemin (28, 29 ou respectivement 30, 31 ou respectivement 32,33), commandant en quantité prédéterminée le déplacement de pivotement des doigts de griffes (9 à 14) en fonction de leur déplacement se produisant transversalement à la direction de transfert (52),
    g) avec chaque fois un chemin incurvé supplémentaire (64a, 64b ou respectivement 65a, 65b ou respectivement 66a, 66b) s'étendant à une distance qui reste constante par rapport aux chemins incurvés (34a, 34b ou respectivement 35a, 35b, ou respectivement 36a, 36b) de telle manière que les chemins incurvés forment des coulisses fermées dans lesquelles sont disposés à guidage les tourillons (22, 23 ou respectivement 24, 25 ou respectivement 26,27) adjoints aux doigts de griffes (9 à 14) et forment respectivement le second appui des doigts de griffes (9 à 14),
    h) les coulisses étant disposées sur le support de transfert (plaques de guidage 63, 64), un détecteur de chemin (rouleaux 28 à 33) monté sur les doigts de griffes (9 à 14) leur étant respectivement adjoint.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que les chemins incurvés (34a à 36b, 64a à 66b) des coulisses ont un tracé inversé identique.
  3. Dispositif selon la revendication 1,
    caractérisé en ce que les chemins incurvés (34a à 36b, 64a à 66b) des coulisses ont un tracé inversé différent.
  4. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que les chemins incurvés (34a à 36b, 64a à 66b) des coulisses s'étendent en forme d'arcs de cercle.
  5. Dispositif selon la revendication 4,
    caractérisé en ce que les chemins incurvés (34a à 36b, 64a à 66b) des coulisses sont disposés sur le support de transfert (plaques de guidage 63, 64) sous forme de chemins en forme de chemises cylindriques.
  6. Dispositif selon une ou plusieurs des revendications précédentes,
    caractérisé en ce que les coulisses sont réalisées sous forme d'inserts interchangeables.
  7. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que les doigts de griffes (9 à 14) se guident au moins jusque dans la zone des tourillons (22 à 27) des deux côtés, dans une extrémité du support de transfert (plaques de guidage 63, 64) réalisée en correspondance en forme de fourche, chaque fois dans un plan parallèle au plan de transfert (15).
  8. Dispositif selon une ou plusieurs des revendication 1 à 7,
    caractérisé en ce que, dans une zone éloignée des premiers appuis (16 à 21), les doigts de griffes (9 à 14) sont reliés les uns aux autres par un ressort (37, 38 ou respectivement 39) de telle manière que les détecteurs de chemins (rouleaux 28 à 33) sont maintenus en appui sur le chemin incurvé (34a à 36b ou respectivement 64a à 66b) respectif de la coulisse.
  9. Dispositif selon une ou plusieurs des revendications 1 à 7,
    caractérisé en ce que, dans une zone éloignée des premiers appuis les doigts de griffes (9 à 14) s'appuient à une extrémité, chacun sur un ressort dont l'autre extrémité s'appuie sur le support de transfert, de telle sorte que les détecteurs de chemins sont maintenus indépendamment les uns des autres en appui sur le chemin incurvé (34a à 36b ou respectivement 64 à 64b) respectif de la coulisse.
EP91100760A 1990-01-26 1991-01-22 Dispositif de transfert dans des machines pour le formage progressive des pièces, notamment dispositif de transfert transversal dans des presses à postes multiples Expired - Lifetime EP0439120B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4002347 1990-01-26
DE4002347A DE4002347B4 (de) 1990-01-26 1990-01-26 Überführungsvorrichtung an Maschinen zum fortschreitenden Formen von Werkstücken, insbesondere Querfördervorrichtung an Mehrstufenpressen

Publications (3)

Publication Number Publication Date
EP0439120A2 EP0439120A2 (fr) 1991-07-31
EP0439120A3 EP0439120A3 (en) 1992-03-18
EP0439120B1 true EP0439120B1 (fr) 1997-07-16

Family

ID=6398869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91100760A Expired - Lifetime EP0439120B1 (fr) 1990-01-26 1991-01-22 Dispositif de transfert dans des machines pour le formage progressive des pièces, notamment dispositif de transfert transversal dans des presses à postes multiples

Country Status (6)

Country Link
EP (1) EP0439120B1 (fr)
JP (1) JPH05104471A (fr)
AT (1) ATE155375T1 (fr)
CZ (1) CZ280142B6 (fr)
DE (2) DE4002347B4 (fr)
SK (1) SK278693B6 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1260621B (it) * 1993-03-05 1996-04-22 Metodo ed impianto per la realizzazione di un elemento metallico per uno snodo, in particolare uno snodo sferico.
DE10014851C1 (de) * 2000-03-24 2001-09-27 Wafios Ag Greiferpaar, insbesondere einer Querfördervorrichtung an Mehrstufenpressen
DE10208720B4 (de) * 2002-02-28 2005-11-03 Wafios Ag Stempelseitige Auswerfvorrichtung für Werkstücke bei Ein- oder Mehrstufenpressen
AU2003241087A1 (en) * 2002-03-26 2003-10-08 Nedschroef Herentals N.V. Device for transferring wire pieces
CN104226881A (zh) * 2013-06-21 2014-12-24 江苏天工工具有限公司 一种钢锭夹钳
DE102017108926B4 (de) * 2017-04-26 2023-08-03 Khs Gmbh Vorrichtung zum Transportieren von Behältern
DE102017108928B4 (de) * 2017-04-26 2022-10-27 Khs Gmbh Behältergreifer
CN107398920B (zh) * 2017-09-12 2024-04-05 北京京东乾石科技有限公司 夹爪机构及机械臂
DE102022123476A1 (de) * 2022-09-14 2024-03-14 Cevotec Gmbh Vorrichtung zum Greifen einer flächigen Struktur mit Öffnungen im Bereich ihrer Oberseite

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1179823A (fr) * 1957-07-24 1959-05-28 Renault Pince d'extraction de pièces métalliques à fermeture symétrique
US3630391A (en) * 1969-01-28 1971-12-28 Gulf & Western Ind Prod Co Work gripper
DE2434540C2 (de) * 1974-07-18 1983-09-08 Hatebur Umformmaschinen AG, Basel Einrichtung zum automatischen Quertransport von Werkstücken auf mehrstufigen Umformpressen
JPS5933520B2 (ja) * 1977-06-10 1984-08-16 株式会社日立製作所 マシンハンド
BE902755A (fr) * 1984-06-29 1985-10-16 Nat Machinery Co Dispositif de transfert de machine a former et machine a former equipee de ce dispositif.
DE3615812A1 (de) * 1986-05-10 1987-11-12 Schuler Gmbh L Einrichtung zum transport von werkstuecken in einer mehrstufigen umformpresse
DE3704939A1 (de) * 1987-02-17 1988-08-25 Erhard Otte Mechanischer greifer
JPS6478781A (en) * 1987-09-19 1989-03-24 Nissan Motor Robot hand

Also Published As

Publication number Publication date
SK278693B6 (sk) 1998-01-14
EP0439120A3 (en) 1992-03-18
DE4002347B4 (de) 2006-06-08
EP0439120A2 (fr) 1991-07-31
CS9100166A2 (en) 1991-08-13
DE4002347A1 (de) 1991-09-19
JPH05104471A (ja) 1993-04-27
CZ280142B6 (cs) 1995-11-15
DE59108775D1 (de) 1997-08-21
ATE155375T1 (de) 1997-08-15

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