EP0383168B2 - 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
EP0383168B2
EP0383168B2 EP90102359A EP90102359A EP0383168B2 EP 0383168 B2 EP0383168 B2 EP 0383168B2 EP 90102359 A EP90102359 A EP 90102359A EP 90102359 A EP90102359 A EP 90102359A EP 0383168 B2 EP0383168 B2 EP 0383168B2
Authority
EP
European Patent Office
Prior art keywords
tool
stage
press
cross beams
workpieces
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
EP0383168A3 (fr
EP0383168B1 (fr
EP0383168A2 (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 pointing downwards using the suction cups.
  • An upward vertical stroke and a full horizontal stroke convey the respective workpiece to the next tool stage.
  • 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 levels.
  • 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 perform 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 crossbeams 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 have been installed, they can only transport a workpiece from one tool level to the other tool level in the same geometrical position. This is without disadvantage if this constant position is desired in the individual tool stages.
  • tool sets are used for processing the pressed parts, which 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 geometric position of the workpiece or tool, an uneven transport step between two tool stages being able to occur.
  • 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 ones Workpiece holders are rigidly connected to the mounting rails, so that a flexible arrangement of the crossbeams is not possible when space is restricted between the press stages.
  • a press has become known from US Pat. No. 4,625,540 in which the crossbeams can carry out a relative movement with respect to the mounting rail in order to carry out step compensation with different tool spacings.
  • the problem of limited space between the press stages does not arise.
  • the invention has for its object to enable a variable position of the workpieces between the individual tool stages in a large-part step press, in particular also taking into account the requirements for restricted 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 with its laterally protruding suction cups may come to rest in the tool area, which would impede the closing of the tools. This applies all the more, the wider the respective tool.
  • the discharging crossbeams are displaced in the return direction from the empty station in the transport direction on the mounting rails. The same applies to the crossbars 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 the same distance, exists between the crossbeams in order to be able 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 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 space for closing the tools is greatest.
  • the displacement drive for the crossbeams is also moved to generate the relative movement, ie for moving the crossbeams on the mounting rails, in staking positions between the press stand and the closed tool.
  • the sliding drive is also used as a set-up axis. In this position, the crossbeams for tool change are pinned on the sliding tables on locking pins.
  • the first three processing stages of a large-part stage press are shown in FIGS. 1 to 6.
  • 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, the press rams 13 to 15 and the upper bars 16 to 18 are located in the upper part of the step press.
  • 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.
  • cross members 38 to 42 are mounted horizontally displaceably in guides 43, 44 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 pins 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 lower half, ie to the right of the direction of passage 60, the cross members 38 to 42 are shown in the removal position above the processing 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 levels.
  • the design with narrow tools in the tool room according to FIGS. 4 and 6 with an intermediate intermediate storage level to be reached at half a working level distance is known per se (see column 2, items 42ff).
  • the between storage levels 61, 61a and 62, 62a as storage for the workpieces in the empty level have up to five degrees of freedom, which are indicated by the direction of arrows 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 are 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 with deposit templates 70, 71, 71a adapted to the workpiece contour these are staked out on frames 72, 73 fastened to the sliding tables 5, 6 and pins 74, 74a, 75 and 75a by moving in the vertical direction 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 (4)

  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, et, entre deux étages d'outils voisins (1 à 3), il est prévu un étage de réception intermédiaire (61,62) comportant un dispositif pour modifier la position de la pièce, les rails de support (25,26), avec les traverses (38 à 42), effectuant une première étape de transport sur une distance moitié de l'étage de travail de l'étage d'outil à l'étage de réception intermédiaire (61,62) et, ensuite, une seconde étape de transport sur un quart de la distance de l'étage de travail dans une position de repos intermédiaire,
    caractérisée en ce que les traverses (38 à 42) agencées sur les rails de support (25,26) sont agencées de façon longitudinalement déplaçable indépendamment l'une de l'autre, dans la direction de transport (60) et à l'encontre de celle-ci, par rapport aux rails de support (25,26) dans la zone de la position de repos, au moyen d'un entraînement programmable (47,48).
  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 précédentes 1 à 3,
    caractérisé 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
DE4001590A DE4001590A1 (de) 1989-02-15 1990-01-20 Grossteil-stufenpresse
DE4001590 1990-01-20

Publications (4)

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

Families Citing this family (10)

* 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
DE10009574A1 (de) 2000-02-29 2001-08-30 Mueller Weingarten Maschf Flexible Transporteinrichtung für Pressen
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
EP0155332B1 (fr) * 1984-03-20 1988-08-24 L. SCHULER GmbH Support intermédiaire de pièce dans une presse-transfert
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

Also Published As

Publication number Publication date
DE59003818D1 (de) 1994-01-27
DE4001590A1 (de) 1990-08-16
EP0383168A3 (fr) 1991-05-15
EP0383168B1 (fr) 1993-12-15
EP0383168A2 (fr) 1990-08-22

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