EP0184079B1 - Dispositif pour transférer des pièces dans une presse de formage à postes multiples - Google Patents

Dispositif pour transférer des pièces dans une presse de formage à postes multiples Download PDF

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Publication number
EP0184079B1
EP0184079B1 EP85114814A EP85114814A EP0184079B1 EP 0184079 B1 EP0184079 B1 EP 0184079B1 EP 85114814 A EP85114814 A EP 85114814A EP 85114814 A EP85114814 A EP 85114814A EP 0184079 B1 EP0184079 B1 EP 0184079B1
Authority
EP
European Patent Office
Prior art keywords
swinging arms
grippers
workpieces
movement
swinging
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
EP85114814A
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German (de)
English (en)
Other versions
EP0184079A3 (en
EP0184079A2 (fr
Inventor
Klaus Blei
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.)
L Schuler GmbH
Original Assignee
L Schuler 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 L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP0184079A2 publication Critical patent/EP0184079A2/fr
Publication of EP0184079A3 publication Critical patent/EP0184079A3/de
Application granted granted Critical
Publication of EP0184079B1 publication Critical patent/EP0184079B1/fr
Expired 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 device for conveying workpieces from one processing stage to the next in a multi-stage press for massive forming with gripper tongs that can be moved back and forth in the conveying direction and perpendicularly to it, each gripper tongs being arranged in the extension of a coupling articulated by two driven swing arms.
  • DE-PS 11 44 085 shows a device for transferring workpieces from one tool to the subsequent tool in a multi-stage press with a gripper tongs attached to a coupling.
  • Two swing arms are articulated to the coupling, which are operatively connected to a cam follower part of a cam control via swivel arms, push rods and other deflection means. When it is driven (rotation of a cam disc), each swing arm causes a partial movement of the gripper tongs.
  • the two last-mentioned devices have the disadvantage that only rotationally symmetrical workpieces can be implemented for further processing in or in the next processing stage (s) and that the gripping position for the ejector operation takes place via two setting criteria.
  • the object of the invention is to provide a device of the generic type with a higher than previously possible number of cycles and with an improved possibility of coordinating the gripper operation on the plunger and ejector ,, plunger movements, both the movement of the gripper towards the tools to and from them away as well as the movement of the gripper tongs in the conveying direction and in the direction opposite to the conveying direction can be effected by a single drive means.
  • the workpieces are deposited in the subsequent machining step without twisting.
  • Advantages also result from the fact that only one drive means is required for the conversion movements of the gripper tongs.
  • the movement of each gripper tongs corresponds to the movement of the coupling point of each swing arm on the coupling.
  • the pivot points of the swing arms are fixed in the gun box.
  • the means and the design of the swing arms and the coupling for a constant parallel alignment of the coupling allow both the use of the device for active gripper tongs, parallel drive movements of all couplers, as well as the use of the device for non-active gripper tongs with a conversion movement taking place depending on the ejector movement.
  • the transfer movements of workpieces 5 in the processing stages 2 and 3 and into the storage station 4 take place according to FIGS. 1 and 2 by means of active gripper tongs 1 in the conveying direction device 25.
  • the gripper tongs 1 are arranged in an end region 7 of a support plate 6 and essentially consist of pliers legs 18 which can be pivoted about pivot points 19 by means of closer-opener part 17.
  • the support plate 6 forms a coupling articulated via swing arms 9 and extended beyond the articulation points 30.
  • each swing arm 9 takes place via a gearwheel 11, to which the swing arm 9 is rigidly connected, and via an intermediate gearwheel 12, which is connected to both gearwheels 11 and which is connected via a linkage rod 15, which is rigidly connected to the intermediate gearwheel 12, to a pendulum indexing gear 13 Connecting rod 14 is connected.
  • the connecting rod 14 connects all the link rods 15 for a synchronous transfer movement of the gripper tongs 1.
  • Gears 11 and intermediate gears 12 are rotatably mounted in a pliers box 20. At least the swing arms 9 belonging together in pairs are of equal length. The distance between the center bearings of the gear wheels 11 corresponds to the distance between the articulation points 30 of the swing arms 9 on the support plate 6.
  • the swing arms 9 are always in parallel alignment with one another during the movement and in the transfer / transfer stations for the workpieces also in parallel alignment with the conveying direction 25
  • the movement of an articulation point 16 of the connecting rod 14 on the articulation rod 15 on a circular arc around the intermediate gear 12 can correspond to the movement of the pendulum locking gear 13 from rest to rest; an intermediate gear is thus avoided.
  • the movement 10 'of the workpieces 5 corresponds to the movement 10 of the coupling points 30.
  • a coupling 21 is introduced for the transmission of movement for the gripper tongs activities.
  • the coupling 21 can consist of a guide groove 23, which is introduced transversely to the longitudinal extent of a displaceably mounted on the support plate 6 and with the closer-opener part 17 in operative connection rod 22 is inserted therein.
  • a sliding block 24 is slidably mounted; which is connected to an articulated shaft 26 via a cranked lever 33.
  • the articulation shaft 26 is rotated from a cam follower part 28, which is placed on a control cam 27 by means of a pressure cylinder 31 via a roller 29 and the cam profiling takes place during its rotation.
  • the linear movement of the cam follower part 28 is deflected via a cranked lever 32 into a rotational movement and into a counter-rotating movement of the propeller shaft 26.
  • the conversion of the rotary movements of the cardan shaft 26 into a linear movement which adjusts the closer / opener part 17 takes place via the cranked lever 33.
  • the opening and closing movements of the gripper tongs 1 and their conversion movements for the workpieces 5 are due to the ejection process of the workpieces 5 from FIG in the processing stages 2, 3 and to match the movement of the press ram holding the male.
  • FIG. 3 illustrates these dependencies.
  • the gripper tongs 1 move against the conveying direction 25 (FIG. 1) without workpieces 5.
  • the pendulum gear 13 (FIG. 1) stops, the ejection activity falls and the gripper tongs 1 are to be closed.
  • the gripper tongs 1 must be opened to transfer the workpieces 5. Transfer, transfer and transfer of the workpieces 5 and part of the movement of the gripper tongs 1 with the workpiece 5 from the tool area takes place in the movement phase of the ram after opening and before closing the tools.
  • Control cams 27 and the movement-transmitting means 28, 29, 31, 32, 26, 33, 22 are to be provided in the number of gripper tongs 1 to be controlled.
  • each of the intermediate gear wheels 12 takes place here, for example, from a control cam 52 each via a cam follower part 50, which is attached to the control cam 52 via a roller 51, and a connecting rod 49 articulated to the articulation point 16 of the articulation rod 15, which is rigidly connected to the intermediate gear wheel 12 Support rod 46, on which the pair of co-operating pliers legs 47 are mounted in pivot points 53 on the area extended beyond the coupling.
  • the holding force for the workpieces 5 is caused by a compression spring 48.
  • the gear ratios, their translation, the lengths of the swing arms 9 and the bearing and articulation points correspond to those of the dimensions described for FIGS. 1 and 2.
  • the gripper tongs 41 are adjusted to take over the workpieces 5 at the end of the ejection movement of the workpieces 5 from the die into the workpiece area. On the one hand, this results in the individual drive of each gripper tongs, and on the other hand, the movements of the gripper tongs 41 towards the workpieces 5 can be adjusted via variable envelopes of the control curve 52, in particular with regard to the time at which the workpieces 5 are detected.
  • the linear movement of the cam follower part 50 and the connecting rod 49 is converted into rotary movements of the intermediate gear 12 via a cranked lever 54.
  • the diagram in FIG. 6 shows the varia blen area of the takeover of the workpiece 5 from the tool, which falls into the working area of the ejector, and the variable area of the transfer of the workpiece 5 to the tool before the return movement of the gripper tongs 41 opposite to the conveying direction 25.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Forging (AREA)

Claims (7)

1. Dispositif pour transférer des pièces (5) dans une presse de formage à plusieurs postes, comportant des pinces (1, 41) mobiles en va-et- vient et agencées pour saisir les pièces (5) et les transférer sur les postes de formage (2, 3, 4), chacune de ces pinces (1, 41) étant disposée en prolongement d'une barre de couplage (6, 46) articulée à deux bras pivotants (9) agencés pour être entraînés en pivotement par des moyens d'entraînement (11, 12, 13, 14, 15, 52), caractérisé en ce que chacun des bras pivotants (9) est monté de manière pivotante sur un bâti à son extrémité opposée à la barre de couplage (6, 46), au moins l'un des bras pivotants (9) étant agencé pour être entraîné en pivotement sur ce point, en ce qu'au moins les deux bras pivotants (9) respectifs formant une paire de bras sont de même longueur, de sorte le déplacement de la barre de couplage (6, 46) et de sa pince (1, 41) entre les postes de formage (2, 3, 4) se fait sur un arc de cercle (10') déterminé par les bras pivotants (9), et en ce que le déplacement des pinces (1, 41) est limité par une inversion du mouvement des moyens d'entraînement (11, 12, 13, 14, 15, 52) à l'arrivée sur le poste de formage respectif (2, 3, 4).
2. Dispositif selon la revendication 1, caractérisé en ce que les bras pivotants (9) articulés à la barre de couplage (6, 46) sont parallèles l'un à l'autre et sont fixés rigidement chacun à une roue dentée respective (11) en se trouvant sensiblement dans la direction de transfert (25) dans les positions de prise (2) et de délivrance (3) des pièces (5), et en ce que lesdites roues dentées (11) sont entraînées au moyen d'une roue dentée intermédiaire commune (12) avec un même rapport de transmission entre la roue dentée intermédiaire (12) et chaque roue dentée (11).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'entraînement des bras pivotants (9) au moyen de la roue dentée intermédiaire (12) se fait à partir d'une transmission à va-et-vient (13).
4. Dispositif selon une ou plusieurs des revendications 1 à 3, caractérisé en ce que les roues dentées intermédiaires (12), dont le nombre est égal à celui des pinces (1, 41), sont reliées mutuellement par une bielle (14) qui est en liaison motrice avec l'entraînement des bras pivotants (9).
5. Dispositif selon une ou plusieurs des revendications 1 a 4, caractérisé en ce que chaque pince (1) est montée sur une première zone d'extrémité (7) d'une plaque de support (6) attaquée par les bras pivotants (9), en ce que chaque pince (1) est agencée pour être actionnée dans le sens de la fermeture et celui de l'ouverture et comporte un élément (17) de commande de fermeture et d'ouverture, et en ce que, sur une seconde zone d'extrémité (8) de la plaque de support (6), est monté un accouplement (21) qui est en liaison motrice, du côté de sa sortie, avec l'élément (17) de commande de fermeture et d'ouverture de la pince (1) par l'intermédiaire d'une tige de commande (22) et, du côté de son entrée, avec un organe (28) suiveur d'une came (27) par l'intermédiaire d'un arbre articulé (26).
6. Dispositif selon la revendication 1 ou 2, caractérisé en ce que chacune des roues dentées intermédiaires (12), dont le nombre est égal à celui des pinces (41), est en liaison motrice par une bielle respective (49) avec des organes (50) suiveurs de cames (52), qui sont indépendants les uns des autres.
7. Dispositif selon la revendication 5, caractérisé en ce que l'accouplement (21) monté sur la seconde zone d'extrémité (8) de la plaque de support (6) se compose d'une rainure de guidage (23), ménagée dans la tige de commande (22) et orientée sensiblement perpendiculairement au mouvement de cette tige (22), et d'un coulisseau (24) logé dans la rainure et raccordé à l'extrémité de l'arbre articulé (26).
EP85114814A 1984-12-01 1985-11-21 Dispositif pour transférer des pièces dans une presse de formage à postes multiples Expired EP0184079B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843443874 DE3443874A1 (de) 1984-12-01 1984-12-01 Vorrichtung zum foerdern von werkstuecken in einer mehrstufenpresse fuer die massivumformung
DE3443874 1984-12-01

Publications (3)

Publication Number Publication Date
EP0184079A2 EP0184079A2 (fr) 1986-06-11
EP0184079A3 EP0184079A3 (en) 1987-10-21
EP0184079B1 true EP0184079B1 (fr) 1989-07-19

Family

ID=6251655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114814A Expired EP0184079B1 (fr) 1984-12-01 1985-11-21 Dispositif pour transférer des pièces dans une presse de formage à postes multiples

Country Status (2)

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EP (1) EP0184079B1 (fr)
DE (2) DE3443874A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5775163A (en) * 1995-12-07 1998-07-07 Schuler Pressen Gmbh & Co. Transfer arrangement for multistation presses
CN109070179A (zh) * 2016-04-28 2018-12-21 哈特伯金属成型机股份公司 用于在加工设备中传送工件的运输装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH712402A1 (de) * 2016-04-28 2017-10-31 Hatebur Umformmaschinen Ag Transportvorrichtung mit Greifzangen zum Umsetzen von Werkstücken in einer mindestens zwei Stufen umfassenden Umformeinrichtung.
CH712403A1 (de) * 2016-04-28 2017-10-31 Hatebur Umformmaschinen Ag Transportverfahren zum Umsetzen von Werkstücken zwischen mehreren aufeinanderfolgenden Stufen einer Bearbeitungseinrichtung.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE789371A (fr) * 1971-09-29 1973-01-15 Peltzer & Ehlers Dispositif pour le transport de pieces d'une matrice a la suivante dans les presses a plusieurs etages.
DE2434540C2 (de) * 1974-07-18 1983-09-08 Hatebur Umformmaschinen AG, Basel Einrichtung zum automatischen Quertransport von Werkstücken auf mehrstufigen Umformpressen
NL165398C (nl) * 1977-09-13 1981-04-15 Nedschroef Octrooi Maats Inrichting voor het overbrengen van te bewerken producten op een gereedschapswerktuig van het ene bewerkingsstation naar het daaropvolgende.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5775163A (en) * 1995-12-07 1998-07-07 Schuler Pressen Gmbh & Co. Transfer arrangement for multistation presses
CN109070179A (zh) * 2016-04-28 2018-12-21 哈特伯金属成型机股份公司 用于在加工设备中传送工件的运输装置
CN109070179B (zh) * 2016-04-28 2020-12-22 哈特伯金属成型机股份公司 用于在加工设备中传送工件的运输装置

Also Published As

Publication number Publication date
DE3571564D1 (en) 1989-08-24
DE3443874A1 (de) 1986-07-10
EP0184079A3 (en) 1987-10-21
EP0184079A2 (fr) 1986-06-11

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