EP0383169B1 - Dispositif de transport pour pièces pressées dans une presse transfert pour pièces de grande taille - Google Patents

Dispositif de transport pour pièces pressées dans une presse transfert pour pièces de grande taille Download PDF

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Publication number
EP0383169B1
EP0383169B1 EP90102360A EP90102360A EP0383169B1 EP 0383169 B1 EP0383169 B1 EP 0383169B1 EP 90102360 A EP90102360 A EP 90102360A EP 90102360 A EP90102360 A EP 90102360A EP 0383169 B1 EP0383169 B1 EP 0383169B1
Authority
EP
European Patent Office
Prior art keywords
tool
pressings
smaller
pressed parts
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
EP90102360A
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German (de)
English (en)
Other versions
EP0383169A1 (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
Original Assignee
Maschinenfabrik 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 filed Critical Maschinenfabrik Mueller Weingarten AG
Publication of EP0383169A1 publication Critical patent/EP0383169A1/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
    • 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
    • B21D43/055—Devices comprising a pair of longitudinally and laterally movable parallel transfer bars
    • 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
    • B21D43/052—Devices having a cross bar
    • 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 transport device for pressed parts in a large-part step press according to the preamble of claim 1.
  • the transport devices for transporting, in particular, large-area parts in a large-part step press consist of two support rails that run in the transport direction, perform a horizontal stroke in and against the transport direction, and a vertical stroke, to which crossbars fastened transversely to the transport direction are attached with suction cups, magnetic holders or other fastening means. through which the pressed parts are transported from one processing stage to the next one. When converting to another pressed part, these cross members must be replaced with suction cups adapted to the respective parts using the tool set.
  • the crossbars with suction cups are changed during automatic tool change by moving the mounting rails to half the horizontal feed step so that the crossbars come to rest in the area between two tools.
  • horizontally displaceable pegging devices are provided, which are moved into a pegging position under these crossbars for receiving the crossbeams. After uncoupling the crossbeams from the support rails and receiving them on the stakeout devices, these horizontally displaceable stakeout devices are pushed out of the stand area again and extended with the sliding tables for tool change.
  • the invention is therefore based on the object of proposing a transport device for pressed parts in a large-part step press which can be used both for large-area and for smaller pressed parts.
  • the invention is based on the main idea that an adaptation of the transport device to the different sizes of the pressed parts by means of an adaptation of the size of the Transport step is connected. Since no change in position in the individual tool stages is required for large-area and in particular flat pressed parts, a clipboard with a corresponding device for changing the position of these pressed parts can generally be dispensed with, as a result of which there is a smaller distance between the individual tool stages and thus a shorter and therefore shorter length cheaper step press results. Even with smaller transport steps, a larger output, ie a higher throughput, is achieved because the transport routes are shorter.
  • the large part step presses generally differ in that no intermediate storage with change of position is provided for large and in particular flat parts, while for smaller, in particular curved pressed parts, an intermediate storage between the individual processing steps with a corresponding device for changing the position is required.
  • the processing of smaller pressed parts generally also requires smaller tools. If you place these smaller tools for smaller pressed parts instead of the larger tools for larger pressed parts in a large-part step press, then there are free spaces in the space between the processing steps, which can be used as an intermediate station for intermediate storage, in particular with a device for changing the position. As a result, a large-part step press can also be used without any problems for smaller pressed parts, with the intermediate spaces resulting from the use of smaller tools being able to be used for intermediate storage of the smaller pressed parts. A corresponding change in position can then be made.
  • the horizontal stroke of the crossbar i.e. H. the transport step of the workpieces by means of the support rails is halved in the case of smaller workpieces and therefore corresponds to the distance between the tool step and the clipboard for the smaller pressed parts.
  • This position of the crossbeams also corresponds to the waiting position when the tools are closed. Furthermore, this corresponds to the setting out position of the crossbeams in order to move out of the step press by means of the displaceable setting out devices when converting with the tool set.
  • both large-sized pressed parts and smaller pressed parts can be produced economically with a relatively small tool step distance of a large-part step press by means of two different feed or transport steps.
  • 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, the press rams 13 to 15 and the press stands 16 to 18 are part of the step press.
  • the mounting rails are guided in the guides of the lifting mechanism 20 to 22, which carry out the lifting movement.
  • line 23 shows the transport step from one tool stage to the next tool stage without an intermediate storage, as is carried out for large pressed parts.
  • Line 24 shows the extension of the crossbeams from the tool stage into a waiting position between the two tool stages during the machining process.
  • Line 25 shows the retraction of the crossbeam with suction pads from this waiting position into the tool stage in order to transport the next workpiece.
  • the upper tool including the lower tool and the crossbeams are moved out on the respective sliding table on the step press. There is then a conversion to smaller tools and adapted cross members with suction cups.
  • the large-part step press is equipped with smaller lower tools or upper tools for the production of smaller, curved pressed parts.
  • the smaller dimensions of the tools create a space between the tool levels, which allows an additional storage level to be created as a clipboard.
  • line 26 shows the transport step from a tool stage to the clipboard, which is located symmetrically between two adjacent tool stages.
  • Line 27 shows the extension of the crossbeams with suction from this clipboard into a waiting position, which is assumed during the machining process.
  • Line 28 shows the retraction of the cross-beam from the waiting position into the tool stage.
  • the sinkers 29 are fed from a conveyor belt 30 to the large-part step press, a sinker 31 lifting the sinkers before they are fed from a suction spider 32 of a loading feeder to the first tool stage 7, 10.
  • FIGS. 4 and 5 also show the intermediate shelves 45 and 46 for the smaller pressed parts with devices for changing the position of the workpiece.
  • the large pressed parts 47 to 49 shown in FIGS. 1 and 2 and the small pressed parts 50 to 54 shown in FIGS. 4 and 5 are each used by the suction devices 34 of the cross members 35 to 39 in FIGS. 1 and 2 or the suction devices 34 of the cross members 40 to 44 in Figures 4 and 5 transported through the individual tool stages or intermediate shelves 45 and 46.
  • the two cross-members for each tool stage are coupled to the couplings 55 to 59 provided for this purpose on the mounting rails 19.
  • these couplings 55 to 59 are shown in FIGS. 4 and 5 and 6.
  • the cross members 40 to 44 in FIGS. 4 and 5 are coupled to corresponding couplings 60 to 64, which are shown in isolation in FIGS. 1 and 2.
  • the respective crossbeams 35 to 39 in FIGS. 1 and 2 or 40 to 44 in FIGS. 4 and 5 are pinned onto horizontally displaceable pegs 65 to 68, as shown in FIGS. 3 and 6 and from the mounting rails 19 uncoupled.
  • FIG. 6 the tool change position for the production of smaller pressed parts is shown in FIG. 6 in comparison to the representation in FIG. 3.
  • the upper tools as well as the lower tools including the staking devices with crossbars on the sliding tables are moved laterally out of the step press.
  • the invention is not restricted to the exemplary embodiment shown and described. Rather, it also encompasses all professional developments and refinements without their own inventive content.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Claims (3)

  1. Dispositif de transport pour des pièces pressées dans une presse à étages pour grandes pièces, comportant plusieurs étages d'outils (1,2) agencés directement l'un derrière l'autre, et dans lequel au moins un et, en particulier, deux rails de support (19), guidés à travers l'espace d'outils de la presse et effectuant un mouvement vertical et un mouvement horizontal, sont prévus, sur lesquels sont fixées des traverses (35,40) équipées de moyens d'aspiration ou analogues dans l'intervalle entre les étages des outils (7-12), caractérisé en ce que, pour usiner aussi bien de grandes pièces pressées que des pièces plus petites, l'étendue de la course horizontale (23,26) des rails de support (19) est variable selon la taille de la pièce pressée, des pièces pressées de grande surface pouvant être transportées sur toute la distance de transport (23) d'un étage d'outils (1) à un autre étage d'outils (2), et des pièces pressées plus petites pouvant être transportées sur une distance de transport moitié (26) d'un étage d'outils à un récepteur intermédiaire (45), et le récepteur intermédiaire (45) résultant de l'espace libre formé entre deux étages d'outils (1,2) pour des pièces pressées plus petites.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que les rails de support (19), pour la course horizontale, présentent des moyens d'accouplement (55,60) à au moins une traverse (35,40), deux traverses étant prévues par étage d'outils pour des pièces pressées de grande surface (47) et une traverse par étage d'outils pour des pièces pressées plus petites (50).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que, pour adapter la presse à étages à une autre taille de pièces, les traverses (35,40) peuvent être disposées sur des dispositifs (65) horizontalement déplaçables et être décrochées des rails de support (19), et être retirées de la presse à étages avec les outils (7,10) par l'intermédiaire de la table coulissante (4).
EP90102360A 1989-02-15 1990-02-07 Dispositif de transport pour pièces pressées dans une presse transfert pour pièces de grande taille Expired - Lifetime EP0383169B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3904465 1989-02-15
DE3904465 1989-02-15
DE4001591A DE4001591A1 (de) 1989-02-15 1990-01-20 Transporteinrichtung fuer pressteile in einer grossteil-stufenpresse
DE4001591 1990-01-20

Publications (2)

Publication Number Publication Date
EP0383169A1 EP0383169A1 (fr) 1990-08-22
EP0383169B1 true EP0383169B1 (fr) 1993-04-21

Family

ID=25877794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102360A Expired - Lifetime EP0383169B1 (fr) 1989-02-15 1990-02-07 Dispositif de transport pour pièces pressées dans une presse transfert pour pièces de grande taille

Country Status (3)

Country Link
EP (1) EP0383169B1 (fr)
DE (2) DE4001591A1 (fr)
ES (1) ES2040518T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE10253202B4 (de) * 2002-11-15 2004-11-25 Müller Weingarten AG Transporteinrichtung für Pressen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335928A1 (de) * 1983-10-04 1985-04-18 L. Schuler GmbH, 7320 Göppingen Einrichtung zum zufuehren von blechzuschnitten zur ziehstufe einer mehrstufenpresse
GB2199781B (en) * 1987-01-09 1991-09-04 Honda Motor Co Ltd Method of changing workpiece holders for press machine
DE3726294C1 (en) * 1987-08-07 1988-08-11 Mueller Weingarten Maschf Swivelling device for gripper holders in presses

Also Published As

Publication number Publication date
ES2040518T3 (es) 1993-10-16
DE59001218D1 (de) 1993-05-27
DE4001591A1 (de) 1990-08-16
EP0383169A1 (fr) 1990-08-22

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