EP0383168B1 - Presse à plusieurs étages pour des pièces de grande taille - Google Patents

Presse à plusieurs étages pour des pièces de grande taille Download PDF

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Publication number
EP0383168B1
EP0383168B1 EP90102359A EP90102359A EP0383168B1 EP 0383168 B1 EP0383168 B1 EP 0383168B1 EP 90102359 A EP90102359 A EP 90102359A EP 90102359 A EP90102359 A EP 90102359A EP 0383168 B1 EP0383168 B1 EP 0383168B1
Authority
EP
European Patent Office
Prior art keywords
tool
workpieces
press
cross beams
multiple stage
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
EP90102359A
Other languages
German (de)
English (en)
Other versions
EP0383168A2 (fr
EP0383168B2 (fr
EP0383168A3 (fr
Inventor
Erich Harsch
Rainer Reichenbach
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.)
Maschinenfabrik Mueller Weingarten AG
Mueller Weingarten AG
Original Assignee
Maschinenfabrik Mueller Weingarten AG
Mueller Weingarten 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
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Application filed by Maschinenfabrik Mueller Weingarten AG, Mueller Weingarten AG filed Critical Maschinenfabrik Mueller Weingarten AG
Publication of EP0383168A2 publication Critical patent/EP0383168A2/fr
Publication of EP0383168A3 publication Critical patent/EP0383168A3/fr
Application granted granted Critical
Publication of EP0383168B1 publication Critical patent/EP0383168B1/fr
Publication of EP0383168B2 publication Critical patent/EP0383168B2/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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
    • B21D43/057—Devices for exchanging transfer bars or grippers; Idle stages, e.g. exchangeable

Definitions

  • the invention relates to a large-part step press according to the preamble of claim 1.
  • Transport devices for transporting workpieces in a large-part stepping press generally consist of two support rails that run in the transport direction, carry out a horizontal stroke in and against the transport direction and a vertical stroke, which pass through the tool space of the press and on which cross beams with suction cups fastened transversely to the transport direction, Magnetic holders or the like are attached, by means of which the workpieces are transported from one processing stage to the next one (see, for example, Industrial Indicator 63/64, 1988 pages 12, 13).
  • the workflow here is such that all tool stages arranged one behind the other perform a common working stroke with their tools.
  • the crossbeams After opening the two halves of the tool, the crossbeams move into the tool room with a half horizontal stroke from a parked or rest position and grasp the workpiece with a vertical stroke downwards using the suction cups.
  • An upward vertical stroke and a full horizontal stroke convey the workpiece to the next tool level.
  • the mounting rail again executes a downward vertical stroke and deposits the workpiece. This is followed by an upward vertical stroke and a half backward horizontal stroke into a parking position between the two tool stages.
  • the upper tool parts can then be moved down together for the pressing process.
  • the support rails that protrude through the entire large-part step press and are arranged on the side of the tools therefore carry full and half horizontal strokes between two adjacent tool steps for transporting the workpieces and for moving to a rest position and vertical strokes for lifting or lowering the workpieces with the cross-members equipped with suction cups out.
  • the suction cups on the crossbeams are adapted to the respective surface structure of the workpiece to be gripped. This is done when converting the system to another pressed part, the crossbars being replaced with suction cups adapted to the respective parts using the respective tool set.
  • the crossbeams with suction cups Once the crossbeams with suction cups are installed, they can only transport a workpiece from one tool level to the other tool level in a constant geometric position. This is without disadvantage if this constant position is desired in the individual tool stages.
  • tool sets are used to machine the pressed parts that are not specially designed for the special press, so that the position of the workpieces can vary from tool level to tool level.
  • a workpiece transport that is unchanged in its geometrical position by means of the crossbars equipped with suction cups could not do justice to these differently arranged tool sets, since the workpieces would not be properly inserted into the tool.
  • the position of the pressure bolts of the air cushions must also be taken into account when determining the required geometrical position of the workpiece or tool, an uneven transport step being able to occur between two tool stages.
  • a step press has become known from JP-A-63 230 238, which also has a device for storing and / or changing the position of workpieces in an intermediate step. This allows the workpiece to be changed both in height and in its position.
  • the crossbeams themselves with the corresponding workpiece holders are rigidly connected to the support rails, so that a flexible arrangement of the crossbeams is not possible in a confined space between the press stages.
  • the invention has for its object to enable a variable position of the workpieces in the individual tool stages in a large-part step press, in particular taking into account the requirements for limited space between the press steps due to the clipboard.
  • the horizontal feed step or horizontal stroke of the mounting rails or the cross members equipped with suction cups is half a working stage distance, i. H. half the distance between two tool levels.
  • the distance between two adjacent tool stages is referred to as the entire working stage distance or the entire horizontal stroke.
  • the cross-beam's entry path into the tool or the tool's exit path is only a quarter of a working step distance away, the cross-beam can, under certain circumstances, come to rest in the tool area with its laterally protruding suction cups, which would prevent the tools from closing. This applies all the more, the wider the respective tool.
  • the discharging crossbars are displaced in the return direction from the empty station in the transport direction on the mounting rails. The same applies to the crossbeams entering the workpieces when they exit the tool.
  • the crossbeams are shifted relative to the direction of transport on the mounting rails.
  • the distance between the crossbeams in the tool area is increased or decreased in the intermediate storage area, which enables the tools to be closed.
  • this process is repeated in the opposite direction, so that when the workpieces are removed, the original distance, ie. H. there is the same distance between the crossbeams in order to carry out the transport steps.
  • the movement of the crossbeams on the mounting rails can take place during the transport or return movement of the mounting rails themselves, i. H. a relative movement between the mounting rails and cross-members is generated. This is done using a programmable drive.
  • the above-mentioned relative displaceability between mounting rails and cross members can be omitted when machining smaller pressed parts or with smaller tools.
  • the required displaceability is greatest when machining the maximum largest pressed part, since here the required free space for closing the tools is greatest.
  • the displacement drive for the crossbeams is also used to generate the relative movement, i. H. brought to move the crossbars on the mounting rails in staking positions between the press stand and closed tool.
  • the sliding drive is also used as a set-up axis. In this position, the crossbeams are set out on the sliding tables on locking pins for tool change.
  • Figures 1 to 6 each show the first three processing stages of a large-part stage press.
  • the step press each has press tables 1 to 3, sliding tables 4 to 6 arranged above with lower tools 7 to 9 fastened thereon.
  • the upper tools 10 to 12 In the upper part of the stage press there are the upper tools 10 to 12, the press rams 13 to 15 and the upper bars 16 to 18.
  • These upper bars 16 to 18 are connected to the press tables 1 to 3 by the press stands 19 to 24, in which the press rams are also located 13 to 15 are performed.
  • a housing 37 there are curves for driving the horizontal and vertical movement of the transport device.
  • Crossbars 38 to 42 are mounted in guides 43, 44 so as to be horizontally displaceable on the mounting rails 25, 26 and are programmably driven by spindles 45, 46 and electric drives 47, 48.
  • the crossbeams 38 to 42 can be uncoupled from the mounting rails 25, 26 by means of couplings 49, 50 and are pinned on the sliding tables 4 to 6 by means of locking bolts 51, 52.
  • Blanks 53, 53a for the production of the workpieces are fed from conveyor belts 54 and raised to a loading height by a blank lifter 55 and inserted into the lower tools 7, 7a by suction spiders 56, 56a of a loading feeder 57.
  • suction spiders 58, 58a on the cross members 38 to 42.
  • Positions 59 to 59i show the machined workpieces in various work or empty stages.
  • the distance between the crossbeams is the same and corresponds to half the step distance between two processing steps 1, 2 or between two empty steps, or the step distance between processing and empty step.
  • the between storage stages 61, 61 and 62, 62a as storage for the workpieces in the empty stage have up to five degrees of freedom, which are indicated by arrow direction 63 to 67.
  • FIG. 7 When working with two tools per working level, two intermediate storage levels are also provided for the parts storage, as shown in FIG. 7, as shown in the working position.
  • FIG. 8 When working with only one tool per work stage, an intermediate storage stage in the work position and a second one in the park position or rest position is shown in FIG. 8.
  • the double tools per work step or tool step are shown in plan view in FIGS. 3 and 6.
  • template carriers 68, 69, 69a For automatic retrofitting of template carriers 68, 69, 69a with deposit templates 70, 71, 71 a adapted to the workpiece contour, these are placed on frames 72, 73 and pins 74, 74a, 75 and 75a fastened to the sliding tables 5, 6 by moving in the vertical direction unplugged and changed with the tool kit.
  • the dash-dotted line with arrows 76, 76a shows the travel curves of the crossbeams when the workpieces are transported from one tool level to the next tool level.
  • the dash-dotted line with arrows 77, 77a shows the travel curve of the crossbeams when returning from the tool level or empty level to the respective waiting position.
  • the dash-dotted line with arrows 78, 78a shows the travel curve of the crossbeams when entering the empty position or the tool position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Multi-Process Working Machines And Systems (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Claims (5)

1. Presse à étages pour des pièces de grande taille, comportant plusieurs étages d'outils agencés les uns derrière les autres, dans laquelle deux rails de support (25,26), effectuant un mouvement horizontal et un mouvement vertical et traversant l'espace des outils de la presse, sont prévus, rails sur lesquels sont fixées des traverses (38 à 42), équipées de dispositifs d'aspiration ou analogues, pour recevoir des pièces, caractérisée en ce que, entre deux étages d'outils voisins (1 à 3), est prévu un étage de réception intermédiaire (61,62) comportant un dispositif pour modifier la position de la pièce, et en ce que les traverses (38 à 42) agencées sur les rails de support (25,26) sont agencées de façon longitudinalement déplaçable, dans la direction de transport (60) et à l'encontre de celle-ci, par rapport aux rails de support (25,26).
2. Presse à étages pour des pièces de grande taille selon la revendication 1, caractérisée en ce que la modification de la position des pièces est effectuée dans un à cinq degrés de liberté (63 à 67).
3. Presse à étages pour des pièces de grande taille selon la revendication 1, caractérisée en ce que le changement de position des traverses (38 à 42) a lieu de sorte que celles-ci, lorsque l'outil est fermé, prennent une position de repos déportée latéralement de celui-ci.
4. Presse à étages pour des pièces de grande taille selon une des revendications 1 à 3, caractérisée en ce que le déplacement longitudinal relatif des traverses (38 à 42) par rapport aux rails de support (25,26) est effectué au moyen d'un entraînement programmable (47,48).
5. Presse à étages pour des pièces de grande taille selon une des revendications 1 à 4, caractérisée en ce que, pour l'échange des outils, l'entraînement pour déplacer les traverses (38 à 42) sur les rails de support (25,26) est déplaçable dans une position de jalonnement à broches correspondantes (74,75) entre des montants de presse (19,24) et l'outil fermé.
EP90102359A 1989-02-15 1990-02-07 Presse à plusieurs étages pour des pièces de grande taille Expired - Lifetime EP0383168B2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3904471 1989-02-15
DE3904471 1989-02-15
DE4001590 1990-01-20
DE4001590A DE4001590A1 (de) 1989-02-15 1990-01-20 Grossteil-stufenpresse

Publications (4)

Publication Number Publication Date
EP0383168A2 EP0383168A2 (fr) 1990-08-22
EP0383168A3 EP0383168A3 (fr) 1991-05-15
EP0383168B1 true EP0383168B1 (fr) 1993-12-15
EP0383168B2 EP0383168B2 (fr) 1997-06-11

Family

ID=25877797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102359A Expired - Lifetime EP0383168B2 (fr) 1989-02-15 1990-02-07 Presse à plusieurs étages pour des pièces de grande taille

Country Status (2)

Country Link
EP (1) EP0383168B2 (fr)
DE (2) DE4001590A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6968725B2 (en) 2000-02-29 2005-11-29 Mueller Weingarten Ag Flexible transporting apparatus for presses

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032340A1 (de) * 1990-10-09 1992-04-16 Erfurt Umformtechnik Gmbh Dreidimensionale transfereinrichtung zum werkstuecktransport in oder zwischen pressen
DE4104810A1 (de) * 1991-02-16 1992-08-20 Schuler Gmbh L Einrichtung zum umsetzen von blechteilen in einer pressenanlage
DE4136763A1 (de) * 1991-11-08 1993-05-13 Erfurt Umformtechnik Gmbh Ablage- und umrueststation zwischen den werkzeugstufen einer transferpressenlinie
DE4143099C2 (de) * 1991-12-27 1996-07-11 Erfurt Umformtechnik Gmbh Transporteinrichtung für Blechteile in einer Pressenstraße
US5632181A (en) * 1995-02-23 1997-05-27 Verson, A Division Of Allied Products Corporation System and method for transferring a work piece in a multi-station press
DE19528002B4 (de) * 1995-07-31 2006-07-13 Müller Weingarten AG Transporteinrichtung für Blechteile in einer Transferpressenlinie
DE19618167C2 (de) * 1996-05-03 1998-07-02 Erfurt Umformtechnik Gmbh Ablagestation für Blechteile zwischen zwei benachbarten Werkzeugstufen einer Transferpressenlinie
DE19651934A1 (de) * 1996-12-14 1998-06-18 Mueller Weingarten Maschf Transferpresse
DE102004015739B4 (de) * 2004-03-29 2006-04-13 Müller Weingarten AG Transportvorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120033U (ja) * 1983-01-28 1984-08-13 アイダエンジニアリング株式会社 プレス間搬送装置
DE3334021C1 (de) * 1983-09-21 1984-06-28 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Ablage fuer Werkstueckteile in einer im Zwischenstaender vorhandenen sogenannten Leerstufe einer Grossteil-Stufenpresse
DE3335928A1 (de) * 1983-10-04 1985-04-18 L. Schuler GmbH, 7320 Göppingen Einrichtung zum zufuehren von blechzuschnitten zur ziehstufe einer mehrstufenpresse
DE3473574D1 (en) * 1984-03-20 1988-09-29 Schuler Gmbh L Intermediate work piece support in a transfer press
JPS63230238A (ja) * 1987-03-16 1988-09-26 Honda Motor Co Ltd 塑性加工機
DE3709762A1 (de) * 1987-03-25 1988-10-06 Schuler Gmbh L Transferpresse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6968725B2 (en) 2000-02-29 2005-11-29 Mueller Weingarten Ag Flexible transporting apparatus for presses

Also Published As

Publication number Publication date
EP0383168A2 (fr) 1990-08-22
DE4001590A1 (de) 1990-08-16
EP0383168B2 (fr) 1997-06-11
EP0383168A3 (fr) 1991-05-15
DE59003818D1 (de) 1994-01-27

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