EP0388610B1 - Press plant with several presses for treating sheet steel parts - Google Patents

Press plant with several presses for treating sheet steel parts Download PDF

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Publication number
EP0388610B1
EP0388610B1 EP90102072A EP90102072A EP0388610B1 EP 0388610 B1 EP0388610 B1 EP 0388610B1 EP 90102072 A EP90102072 A EP 90102072A EP 90102072 A EP90102072 A EP 90102072A EP 0388610 B1 EP0388610 B1 EP 0388610B1
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EP
European Patent Office
Prior art keywords
press
presses
sheet
metal parts
machining
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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
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EP90102072A
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German (de)
French (fr)
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EP0388610B2 (en
EP0388610A1 (en
Inventor
Rudi Brandstetter
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L Schuler GmbH
Schuler AG
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L Schuler GmbH
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Priority to AT90102072T priority Critical patent/ATE90236T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • 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
    • B21D43/055—Devices comprising a pair of longitudinally and laterally movable parallel transfer bars

Definitions

  • the invention relates to a press system according to the preamble of claims 1 and 2.
  • Sheet metal parts are processed in several processing steps. Originally, single presses, e.g. so-called body presses used. As a further development to press lines, processing was initially carried out with manual handling of the sheet metal parts; later with partially mechanized, then with fully automated conveying of the sheets.
  • Multi-column transfer presses meet the demand for high flexibility, high output and short changeover times.
  • the eight processing stages required to manufacture sheet metal parts in automotive engineering are distributed in one, two or three rams in the multi-column transfer presses.
  • the sheet metal parts there are tool center distances of 2,500 mm and beyond, and the sheet metal parts and the means for converting the sheet metal parts in the processing steps must be accelerated to achieve large numbers of pieces for the transfer movements.
  • the press system shows a new development direction according to the overall characteristics of claims 1 or 2.
  • Such a hybrid press system uses advantageous peculiarities of both the press line and the multi-column transfer press.
  • DE 12 71 067 C which discloses a press line
  • DE 23 59 912 C2 which discloses a multi-column transfer press, are therefore described below.
  • the press line of the first-mentioned publication consists of a multi-acting drawing press operated as a continuous press as a head press with a transport system for the sheet metal parts controlled by the head press through the press line.
  • the drawing press is equipped with a bottom ram and bottom plate ram.
  • the transport system for the sheet metal parts has a gripper rail system that extends through the entire press line and can be moved in three axes for opening-closing, lifting-lowering and for transfer and back.
  • Each press is an individual machine.
  • gripper rails guided through the press line only makes sense if the press rams of the individual presses also permit a synchronous transfer movement of the sheet metal parts. If the press line has to be fully synchronized, complex synchronization means must be used. Although the installation of the individual presses has already led to a reduced space requirement due to the omission of the turning device and consequently a smaller press spacing, on the one hand the small space requirement of multi-column transfer presses cannot be achieved; a comparatively large press foundation (foundation) is furthermore required; on the other hand, the transfer step of the gripper rail system is also a relatively further one. The large mass of the transporting gripper rail system requires large driving forces with high acceleration values.
  • the second document teaches a transfer press with several successive processing stations.
  • the transfer press is a multi-column transfer press with a head piece supported by a stand, a press table and rams, which can be raised and lowered by a common drive. Tools or tool sets are assigned to the plungers.
  • In the area of the press stands there are processing-free steps, so-called empty steps, in which, in another version, clipboards are arranged.
  • Two gripper rails are driven in the three axes, starting from the main press drive or a secondary drive, via cam controls. Tools or tool sets and sections of the gripper rails can be exchanged by means of the transfer press or sliding tables which can be moved out of this.
  • the forming and / or shear forces in the individual processing stages are different.
  • the one-sided loading of the rams as well as the ram, table and tool deflections have an unfavorable effect on the machining and the initial part.
  • each processing stage and on the other hand the processing stages of each of the rams must be secured as a whole.
  • the transfer press In the event of excessive pressure increases in individual processing stages and in the individual connecting rods, the transfer press must switch off, and it is therefore very expensive to secure the tools and the transfer press.
  • the tools or tool sets cannot be set separately and are therefore ready for machining set values.
  • Changing the setting of a tool generally changes all tools.
  • the masses of the gripper rails are to be accelerated so that the output of the transfer press is low, if only because of the large center-to-center distance of the tools and accordingly the large movement of the sheet metal parts per ram stroke.
  • High acceleration values, and here the accelerations of large masses lead to vibrations in all parts of the press.
  • the accuracy in the transfer and reshaping of the workpieces is impaired.
  • the transfer movement of the sheet metal parts also corresponds to the center distance of the tools in transfer presses.
  • the hybrid press system according to the invention takes up a significantly smaller total footprint.
  • the transport routes of the sheet metal parts are significantly reduced overall.
  • the number of strokes, the output and the press system can be increased.
  • the press system forms a self-contained system without the processing steps influencing each other through the forming processes.
  • the central control of all systems such as pressure consumers, the movement sequences, the tool change and the like is advantageous here.
  • 1A shows a press line with a head press 1 and further follow-up presses 2.
  • the sheet metal part fed from a feed device 3 to the head press 1 is held in this by a sheet metal holder ram in a drawing tool and formed by a further ram.
  • the movements of the tappets for holding and reshaping take place from top to bottom.
  • At least one turning device 6 is therefore required for the further processing of the sheet metal parts in the subsequent presses.
  • the sheet metal parts are transported through the press line to the removal device 4 by means of feeder 5.
  • the stands of the presses 1, 2 are indicated by 9.
  • FIG. 1C shows a combined press system with a double-acting drawing press 1, a turning device 6 and a three-column transfer press with the stands 9 and a device 8 for transferring the workpieces through the processing stages of the transfer press.
  • the tool sets from e.g. Two processing stages can be exchanged by means of sliding tables 11.
  • the four-column transfer press shown in FIG. 1D has, with the double-acting head press 1, a drawing stage 10 working from the bottom up and a device 8 for transferring the workpieces which is guided through the transfer press.
  • the head press 1 is a single-acting press with a pulling device 7 integrated in the press table.
  • Fig. 1 F shows a simplified front view and top view of a hybrid press system according to the invention compared to the previous development stages, as will be explained in more detail below with reference to FIGS. 2 to 5.
  • Essential and new elements of the invention can already be seen from this schematic illustration.
  • a clipboard 12 is arranged between each processing stage.
  • Each machining stage can contain both a tool for a sheet metal part to be machined or several tools for several sheet metal parts to be machined simultaneously in the machining stage.
  • the device 13 for transferring the workpieces is oriented above the sheet metal part transport plane - above the intermediate shelves 12.
  • the head press 1 is, for example, a drawing press with a drawing device 7.
  • the drawing press 1 has four stands. The left pair of stands is positioned at 18 and the right pair of stands at 16.
  • the downstream presses 2 downstream of the drawing press 1 are equipped with further processing sequences for processing the sheet metal parts 39. The processing may also include re-drawing stages.
  • the follow presses 2 also have four stands 16, 17. The stands 16, 17, 18 located at the front have not been shown overall.
  • the presses 1, 2 are set up side by side with only a slight distance between the supporting areas of the stands 16, 17.
  • the head pieces 21 of the presses 1, 2 are placed on the supporting, supporting areas of the stands 18, 16 and 17, 16 by means of fitting pieces 22 and held by tension anchors 46, Fig. 3, 4, 5.
  • Each press 1 has a plunger 26 which can be moved vertically via connecting rods 25.
  • the connecting rods 25 engage the plunger 26 at diagonally spaced pressure points 27.
  • the connecting rods 25 are curve-driven, or as shown in FIG. 4, crankshaft-driven.
  • the drive takes place via a shaft 23 which extends over the length of the hybrid press system and which is rotated by a main motor 45, in FIG.
  • Each press 1, 2 is assigned a press table 15, by means of which the stands 18, 16 or 17, 16 or their supporting areas are supported on supports 19. Fitting pieces 22 are also inserted between the press tables 15 and the stands 16 to 18, in order to avoid lateral displacements here as well. The head pieces 21 and the press tables 15 are also placed at a small distance, gap 47, from one another in order to avoid mutual interference.
  • the supports 19 common to the uprights 16 to 18 are set up on support surfaces 20 of the foundation 14.
  • a slide table 11 is assigned to each ram 26, via which the individual tools 28, 29 can be exchanged.
  • An intermediate shelf 12 is arranged between each two presses 1, 2 and 2, 2 with the machining stages characterized by the tools 28, 29.
  • the clipboards 12 are e.g. centered on the center distances of the tools 28, 29 and between the stands 16, 17 a, so as to halve the movement of the sheet metal parts 39 per ram stroke.
  • a device for transfer is provided, which is generally positioned at 13 and whose essential elements are located above the sheet metal part transport plane 35.
  • the transfer device 13 here consists of two running rails 36, which can extend from the feed device 3 to the removal device 4 through the length of the hybrid press system, a first running rail 36 when looking at FIG. 2 behind the plungers 26 and Tool upper parts 28 and a second running rail 36 in front of the plungers 26 and the tool upper parts 28 can be raised and lowered on the presses 1, 2.
  • the lifting and lowering movements of the running rails 36 are achieved via lifting devices 40 which are attached to stands 16 or 17 of the presses 1, 2 and e.g.
  • Carriages 37 can be moved in the longitudinal direction of the running rails 36 on each of the running rails 36. Opposing carriages 37 are connected to one another by suction bridges 42, as can be seen in more detail in FIG. 3.
  • Fig. 3 corresponds to the representation of a horizontal section through the hybrid press system above the sheet metal part transport plane indicated in Fig. 2 with 35.
  • Sheets of different sizes (and thickness) are shown in the feed device 3. With 39 is a large starting sheet, with 39 'two smaller starting sheets are indicated. Accordingly, one or two tools for each processing stage must then be introduced into the hybrid press system. For this purpose, a sliding table 11 is pushed over rails in each press 1, 2. The tools attached to these and replaceable or replaceable when setting up the hybrid press system for new workpieces have not been shown. Each plunger 26 is assigned a tool or two tools from the upper tool part 28 and lower tool part 29. While the sliding tables 11 are to be moved out of the presses 1, 2 of the hybrid press system on one side (upwards in the drawing), tools can be inserted from the other side of the hybrid press system via the sliding tables 11 shown in FIG. 3 below .
  • the multi-part structure of the stands 16, 17 can be seen from the cut surface and the different hatching directions in the stands 16, 17.
  • Multi-part design refers to the load-bearing, supporting areas, but not to cladding parts.
  • the distance between the stands 16, 17, or their load-bearing, supporting areas, and the distance between the head pieces 21 and the press tables 15 (FIG. 1), column 47, is such that the individual presses 1, 2 influence one another is excluded.
  • the invention provides, without deviating from the idea of the invention, to use a stand 16, 17 or a pair of stands — front and rear arrangement — for two presses placed against one another.
  • a one-column arrangement is also given if within a two head pieces 21 of adjacent presses 1, 2 or 2, 2 supporting stands 16, 17 two clamping anchors 46 and two, each supporting an adjacent head piece 21, areas in the manner of sleeves with central or one, then eccentric clamping anchors 46 are present.
  • Such arrangements lead to a significant reduction, apart from a negligible size, in the mutual influence of adjacent processing stages.
  • tensioning anchors 46 and supporting, supporting areas one sometimes speaks of two-column arrangements.
  • FIGS. 2 and 3 are based on head pieces 21 and press tables 15 in the number of individual presses of the entire hybrid press system, but without wishing to restrict the idea of the invention thereto.
  • intermediate shelves 12 can be seen with the sheet metal part receptacles 44.
  • the upward facing sheet metal part receptacles 44 for supporting the sheet metal parts 39 from below can be adjusted automatically in height, to the size, shape and inclined position of the sheet metal parts 39 by means of adjusting means.
  • Setting means, gears and adjusting rods have not been shown in detail, since these means and their installation in the clipboards 12 are easily conceivable.
  • the carriages 37 can, as shown in FIG. 3, carry out different movements by means of the transport linkage 38 with an appropriate design of the movement of the cam follower lever 33, in order to on the one hand in conjunction with the lifting and lowering movements of the running rails 36 sheet metal parts 39 out of the tools 29 in to transport the intermediate shelves 12 and, at the same time, sheet metal parts 39 from the intermediate shelves 12 into the following tools 29 and, on the other hand, to remain in the spaces between the tool or ram of a press and the intermediate shelf 12 during the forming phase.
  • the first, third, fifth and each but one carriage after the other 37 each have a transport linkage 38, which here lies between the rails 36, and the second, fourth and each one after that Carriage 37 movable over the external transport linkage 38.
  • Each transport linkage 38 is placed via a cam follower lever 33 on one of the control cams 48 moved by the shaft 23.
  • the suction bridges 42 can be placed on support members 43 on the sliding tables 11 by means of an additional lowering movement of the running rails 36 and can then be uncoupled from the running carriages 37 in order to exchange them with the tools 28, 29 at the same time.
  • a motor 45 is fixed in the frame of the drawing press 1 and rotates the shaft 23 by means of a V-belt and flywheel mass via a clutch / brake unit 24. From this shaft 23, the movements of the ram 26 of the presses 1, 2, the lifting and lowering movements of the rails 36 and the Trans fer movements of the carriage 37 tapped so as to achieve synchronism of movements.
  • the adjustment movements of the sheet metal part receptacles 44 are indicated by arrows.
  • the reference numbers 13 refer to the conversion device for the sheet metal parts 39, with the lifting linkage 41 for the running rails 36, the carriage 37 and the suction bar 42 with indicated, for example, vacuum holding means, suction cups.
  • tension anchors are numbered between the head piece 21 and the press table 15. The further reference numbers serve as orientation when comparing with FIGS. 2 and 3.
  • Fig. 5 is used for better visibility of the stand areas or support areas between two presses, e.g. between the presses 1 and 2.
  • the head pieces, numbered 21, are placed on stands 16 and 17 by means of the fitting pieces 22.
  • the stands 16, 17 are placed on the press tables 15 by means of further adapters 22.
  • Each individual press 1, 2 is held over the tension anchor 46.
  • the press tables 15 are set up above the supports 19.
  • the head pieces 21 of adjacent presses 1, 2 or 2, 2 can also be placed on a then common stand 16 or 17 or on a single, load-bearing region of a stand 16, 17.
  • the stands 16, 17 can be set up directly via a support 19.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The hybrid press plant comprises a plurality of individual presses with a drawing press (1) and progressive presses (2). These are set up via stands (16, 17) on common mounting surfaces (20). A tool is assigned to each press (1, 2), comprising a top piece, a ram (26), a press table (15) and a sliding table (11). The tools can be replaced by means of the sliding table (11). Guided through the hybrid press plant is a transfer device (13), the individual parts of which are arranged above the plane in which the sheet-metal parts are transported and grasp the sheet-metal parts from above. Intermediate deposition points between two processing stages are designated by (12). This reduces the length of the transfer movement of the sheet- metal parts per punch stroke. Large-area and thin-walled, hence intrinsically stable, sheet-metal parts can be transferred. <IMAGE>

Description

Die Erfindung betrifft eine Pressen-Anlage, gemäß dem Oberbegriff der Ansprüche 1 und 2.The invention relates to a press system according to the preamble of claims 1 and 2.

Die Bearbeitung von Blechteilen erfolgt in mehreren Bearbeitungsschritten. Ursprünglich wurden Einzelpressen, z.B. sog. Karosseriepressen verwendet. In Weiterentwicklung zu Pressenstraßen erfolgte die Bearbeitung zunächst mit manueller Handhabung der Blechteile; später mit teilmechanisierter, dann mit vollautomatisierter Förderung der Bleche.Sheet metal parts are processed in several processing steps. Originally, single presses, e.g. so-called body presses used. As a further development to press lines, processing was initially carried out with manual handling of the sheet metal parts; later with partially mechanized, then with fully automated conveying of the sheets.

Die Notwendigkeit der Verringerung von Investitions- und Betriebskosten führte zur Zusammenlegung der auf Einzelpressen in Pressenstraßen durchgeführten Bearbeitungsschritte in kompakte, mehrstufige Mehrständer-Transferpressen. Mehrständer-Transferpressen entsprechen der Forderung nach hoher Flexibilität, großer Ausbringung und kurzen Umrüstzeiten. Die zur Herstellung der Blechteile im Automobilbau notwendigen beispielsweise acht Bearbeitungsstufen sind in den Mehrständer-Transferpressen auf einen, zwei oder auf drei Stößel verteilt. Als Folge der Abmessungen der Blechteile ergehen sich Werkzeugmittenabstände von 2.500 mm und darüber hinaus und die Blechteile und die Mittel zum Umsetzen der Blechteile in den Bearbeitungsstufen sind zum Erreichen großer Stückzahlen für die Transferbewegungen hoch zu beschleunigen.The need to reduce investment and operating costs led to the merging of the processing steps carried out on individual presses in press lines into compact, multi-stage, multi-column transfer presses. Multi-column transfer presses meet the demand for high flexibility, high output and short changeover times. For example, the eight processing stages required to manufacture sheet metal parts in automotive engineering are distributed in one, two or three rams in the multi-column transfer presses. As a result of the dimensions of the sheet metal parts, there are tool center distances of 2,500 mm and beyond, and the sheet metal parts and the means for converting the sheet metal parts in the processing steps must be accelerated to achieve large numbers of pieces for the transfer movements.

Eine neue Entwicklungsrichtung zeigt die Pressen-Anlage nach den Gesamt-Merkmalen derAnsprüche 1 oder 2. Eine solche Hybrid-Pressen-Anlage nutzt vorteilhafte Eigenheiten sowohl der Pressenstraße als auch der Mehrständer-Transferpresse. Es werden im folgenden daher die DE 12 71 067 C , die eine Pressenstraße offenbart und die DE 23 59 912 C2, die eine Mehrständer-Transferpresse offenbart, beschrieben.The press system shows a new development direction according to the overall characteristics of claims 1 or 2. Such a hybrid press system uses advantageous peculiarities of both the press line and the multi-column transfer press. DE 12 71 067 C, which discloses a press line and DE 23 59 912 C2, which discloses a multi-column transfer press, are therefore described below.

Die Pressenstraße der erstgenannten Druckschrift besteht aus einer im Dauerlauf betriebenen, mehrfach wirkenden Ziehpresse als Kopfpresse mit einem von der Kopfpresse gesteuerten Transportsystem für die Blechteile durch die Pressenstraße. Um Wendeeinrichtungen zwischen der Kopfpresse und der folgenden Presse zu vermeiden und somit die Abstände zwischen den Pressen zu verringern, ist die Ziehpresse mit von unten nach oben wirkendem Ziehstößel und von oben nach unten wirkendem Blechhalterstößel ausgestattet. Das Transportsystem für die Blechteile weist ein sich durch die ganze Pressenstraße erstreckendes Greiferschienensystem auf, das in drei Achsen zum Öffnen-Schließen, Heben-Senken sowie zum Transfer und zurück bewegbar ist. Jede Presse ist für sich eine Einzelmaschine. Die Verwendung von durch die Pressenstraße hindurch geführten Greiferschienen ist nur dann sinnvoll, wenn auch die Pressenstößel der Einzelpressen eine synchrone Umsetzbewegung der Blechteile gestatten. Ist die Pressenstraße vollsynchronisiert zu fahren, sind hierfür aufwendige Synchronisationsmittel einzusetzen. Obwohl die Aufstellung der Einzelpressen wegen Wegfalls der Wendeeinrichtung und demzufolge geringeren Pressenabstandes schon zu einem verringerten Platzbedarf geführt haben, ist einerseits der geringe Platzbedarf von Mehrständer-Transferpressen nicht erreichbar; es istweiterhin eine verhältnismäßig große Pressengründung (Fundament) erforderlich, andererseits ist auch der Transferschritt des Greiferschienensystems ein noch verhältnismäßig weiter. Die große Masse des transportierenden Greiferschienensystems erfordert große Antriebskräfte bei hohen Beschleunigungswerten. Großflächige Blechteile, wie auch dünnwandige Blechteile, d.h. insgesamt in sich labile Blechteile, sind in der Pressenstraße nur bedingt verarbeitbar bzw. umsetzbar, insbesondere dann nicht, wenn ein hoher Ausstoß (z.B. 16 Teile pro Minute) erreicht werden soll. Ein Werkzeugwechsel vermittels in die Pressen und aus diesen heraus verfahrbarer Schiebetische ist nicht vorgesehen. Das über die Länge der Pressenstraße sich erstreckende Gestänge für die Bewegungen des Greiferschienensystems in den drei Achsen und die Greiferschienen stören den Wechselvorgang der Werkzeuge erheblich.The press line of the first-mentioned publication consists of a multi-acting drawing press operated as a continuous press as a head press with a transport system for the sheet metal parts controlled by the head press through the press line. In order to avoid turning devices between the head press and the following press and thus to reduce the distances between the presses, the drawing press is equipped with a bottom ram and bottom plate ram. The transport system for the sheet metal parts has a gripper rail system that extends through the entire press line and can be moved in three axes for opening-closing, lifting-lowering and for transfer and back. Each press is an individual machine. The use of gripper rails guided through the press line only makes sense if the press rams of the individual presses also permit a synchronous transfer movement of the sheet metal parts. If the press line has to be fully synchronized, complex synchronization means must be used. Although the installation of the individual presses has already led to a reduced space requirement due to the omission of the turning device and consequently a smaller press spacing, on the one hand the small space requirement of multi-column transfer presses cannot be achieved; a comparatively large press foundation (foundation) is furthermore required; on the other hand, the transfer step of the gripper rail system is also a relatively further one. The large mass of the transporting gripper rail system requires large driving forces with high acceleration values. Large sheet metal parts, as well as thin-walled sheet metal parts, i.e. Overall, unstable sheet metal parts can only be processed or implemented to a limited extent in the press line, especially not if a high output (e.g. 16 parts per minute) is to be achieved. A tool change by means of the presses and sliding tables that can be moved out of them is not provided. The linkage extending over the length of the press line for the movements of the gripper rail system in the three axes and the gripper rails considerably disrupt the tool changing process.

Die zweitgenannte Druckschrift lehrt eine Transferpresse mit mehreren aufeinanderfolgenden Bearbeitungsstationen. Die Transferpresse ist eine Mehrständer-Transferpresse mit einem durch Ständer abgestützten Kopfstück, einem Pressentisch und Stößeln, die von einem gemeinsamen Antrieb heb- und senkbar sind. Den Stößeln sind Werkzeuge bzw. Werkzeugsätze zugeordnet. Im Bereich der Pressenständer sind bearbeitungsfreie Stufen, sog. Leerstufen, vorgesehen, in denen bei anderer Ausführung Zwischenablagen angeordnet sind. Der Antrieb von zwei Greiferschienen in den drei Achsen erfolgt, ausgehend vom Pressenhauptantrieb oder einem Nebenantrieb, über Kurvensteuerungen. Werkzeuge bzw. Werkzeugsätze und Teilstücke der Greiferschienen sind vermittels in die Transferpresse bzw. aus dieser heraus verfahrbarer Schiebetische austauschbar. Die Umform- und/oder Scherkräfte in den einzelnen Bearbeitungsstufen sind unterschiedlich hoch. Die einseitige Belastung der Stößel sowie die Stößel-, Tisch- und Werkzeugdurchbiegungen wirken sich ungünstig auf die Bearbeitung und das Ausgangsteil aus.The second document teaches a transfer press with several successive processing stations. The transfer press is a multi-column transfer press with a head piece supported by a stand, a press table and rams, which can be raised and lowered by a common drive. Tools or tool sets are assigned to the plungers. In the area of the press stands, there are processing-free steps, so-called empty steps, in which, in another version, clipboards are arranged. Two gripper rails are driven in the three axes, starting from the main press drive or a secondary drive, via cam controls. Tools or tool sets and sections of the gripper rails can be exchanged by means of the transfer press or sliding tables which can be moved out of this. The forming and / or shear forces in the individual processing stages are different. The one-sided loading of the rams as well as the ram, table and tool deflections have an unfavorable effect on the machining and the initial part.

Zur Vermeidung von Werkzeug-und Pressen bruch ist zum einen jede Bearbeitungsstufe und zum anderen sind die Bearbeitungsstufen jedes der Stößel insgesamt abzusichern. Bei übermäßigen Druckerhöhungen in einzelnen Bearbeitungsstufen und in den einzelnen Pleueln muß die Transferpresse abschalten, und es ist somit zur Sicherung der Werkzeuge und der Transferpresse ein hoher Aufwand zu betreiben.To avoid breakage of tools and presses, on the one hand each processing stage and on the other hand the processing stages of each of the rams must be secured as a whole. In the event of excessive pressure increases in individual processing stages and in the individual connecting rods, the transfer press must switch off, and it is therefore very expensive to secure the tools and the transfer press.

Die Werkzeuge bzw. Werkzeugsätze sind nicht separat einstellbar und somit vorab auf die Bearbeitungswerte einzustellen. Eine Änderung der Einstellung eines Werkzeugs bewirkt im allgemeinen die Änderung aller Werkzeuge. Die Massen der Greiferschienen sind zu beschleunigen, so daß allein schon wegen des großen Mittenabstands der Werkzeuge und dementsprechend der großen Umsetzbewegung der Blechteile pro Stö- ßeltakt, der Ausstoß der Transferpresse gering ist. Hohe Beschleunigungswerte, und hier die Beschleunigungen großer Massen, führen zu Schwingungen in allen Pressenteilen. Es ist die Genauigkeit in dem Transfer und in der Umformung der Werkstücke beeinträchtigt. Die Umsetzbewegung der Blechteile entspricht auch bei Transferpressen dem Mittenabstand der Werkzeuge.The tools or tool sets cannot be set separately and are therefore ready for machining set values. Changing the setting of a tool generally changes all tools. The masses of the gripper rails are to be accelerated so that the output of the transfer press is low, if only because of the large center-to-center distance of the tools and accordingly the large movement of the sheet metal parts per ram stroke. High acceleration values, and here the accelerations of large masses, lead to vibrations in all parts of the press. The accuracy in the transfer and reshaping of the workpieces is impaired. The transfer movement of the sheet metal parts also corresponds to the center distance of the tools in transfer presses.

Gegenüber dem aufgezeigten Stand der Technik, insbesondere gegenüber DE-C-1271067 ist es eine Aufgabe der Erfindung, insbesondere im Hinblick auf die immer großflächiger werdenden Blechteile, die Länge der Umsetzbewegung der Blechteile je Stößelhub wesentlich zu verkürzen, um so die Beschleunigungswerte herabzusetzen. Es sollen großflächige und dünnwandige und von daher in sich labile Blechteile umgesetzt werden. Weiterhin ist es eine Aufgabe der Erfindung, den Abstand der Führungen jedes der Stößel zu verringern, um so das Führungsverhältnis aus Abstand der Führungen zueinander zur Länge der Führungen und somit die Seitenführung jedes der Stößel zu verbessern. Weiterhin sollen die Elemente der Einrichtung zum Umsetzen der Blechteile in Zeiten des Auswechselns der Werkzeuge derart weit angehoben sein, daß diese den Wechselvorgang nicht behindern.Compared to the prior art shown, in particular with respect to DE-C-1271067, it is an object of the invention, in particular with regard to the sheet metal parts that are becoming increasingly large, to shorten the length of the conversion movement of the sheet metal parts per ram stroke so as to reduce the acceleration values. Large and thin-walled and therefore unstable sheet metal parts should be implemented. Furthermore, it is an object of the invention to reduce the spacing of the guides of each of the plungers so as to improve the guiding relationship from the spacing of the guides to one another to the length of the guides and thus the lateral guidance of each of the plungers. Furthermore, the elements of the device for moving the sheet metal parts should be raised to such an extent during times when the tools are changed that they do not hinder the changing process.

Die Lösung der gestellten Aufgabe sieht die Kombination der gegenständlichen Gesamt-Merkmale nach dem Anspruch 1 oder dem Anspruch 2 zu einer in ihrer Art neuen, kompakten Hybrid-Pressen-Anlage vor. Die Merkmale der weiteren Ansprüche stellen bevorzugte und zum Teil auch für sich erfinderische Lösungen dar.The solution to the stated problem is provided by the combination of the objective overall features according to claim 1 or claim 2 to a new type of compact hybrid press system. The features of the further claims represent preferred and in some cases also inventive solutions.

Gegenüber einer Pressenstraße und einer Mehrständer-Stufenpresse ist von Vorteil, daß die Hybrid-Pressen-Anlage nach der Erfindung eine wesentlich geringere Gesamt-Aufstellfläche beansprucht. Die Transportwege der Blechteile sind insgesamt wesentlich verringert. Die Hubzahl, derAusstoß, der Pressen-Anlage kann erhöht werden. Die Pressen-Anlage bildet ein in sich geschlossenes System, ohne daß sich die Bearbeitungsstufen durch die Umformvorgänge gegenseitig beeinflussen. Von Vorteil ist hierbei die zentrale Steuerung aller Systeme wie Druckverbraucher, der Bewegungsabläufe, des Werkzeugwechsel u.dgl..Compared to a press line and a multi-column step press, it is advantageous that the hybrid press system according to the invention takes up a significantly smaller total footprint. The transport routes of the sheet metal parts are significantly reduced overall. The number of strokes, the output and the press system can be increased. The press system forms a self-contained system without the processing steps influencing each other through the forming processes. The central control of all systems such as pressure consumers, the movement sequences, the tool change and the like is advantageous here.

Gegenüber einer Mehrständer-Stufenpresse ist der Wegfall der gegenseitigen Beeinflussung der Bearbeitungsstufen von Vorteil, weiterhin die Möglichkeit der Absicherung jedes Werkzeugs und somit jedes Stößels durch separate Überlastsicherungen. Es wird von daher ein verbesserter Überlastschutz erreicht. Jedes Werkzeug ist separat einstellbar und die Nacharbeit dieser istwesentlich erleichtert. Die Zugänglichkeit zu den Stößeln, zu den Werkzeugspannern, den Werkzeugen und zu den Teileaufnahmeelementen ist verbessert. Weiterhin von Vorteil sind die geringen Massen und der kleinere Raumbedarf der Schiebetische, der ruhigere Blechteiletransport, die Integration der Zwischenablagen aktiv in den Werkstückdurchlauf, - Anpassung an die Schräglage der ankommenden Blechteile und Vorgabe einer neuen Schräglage, - und die leichtere Ausführung der Pressen-Anlage bei erhöhter Anzahl an Aufstellflächen. Die statischen und dynamischen Belastungen auf das Fundament sind verringert und gleichmäßiger verteilt.Compared to a multi-column step press, the elimination of the mutual influencing of the machining steps is an advantage, as is the possibility of securing each tool and thus each ram with separate overload safeguards. Improved overload protection is therefore achieved. Each tool can be set separately and the reworking of these is made considerably easier. The accessibility to the tappets, the tool clamps, the tools and the parts receiving elements is improved. Other advantages are the low mass and the smaller space requirements of the sliding tables, the smoother sheet metal transport, the integration of the clipboards actively in the workpiece flow, - adaptation to the inclined position of the incoming sheet metal parts and specification of a new inclined position, - and the lighter design of the press system with an increased number of footprints. The static and dynamic loads on the foundation are reduced and distributed more evenly.

Anhand von Ausführungsbeispielen soll im folgenden die Erfindung erläutert werden. Die Zeichnung zeigt in den

  • Fig. 1Abis 1 F die Entwicklung von der Pressenstraße über die Mehrständer-Transferpresse zur Hybrid-Pressen-Anlage,
  • Fig. 2 eine Vorderansicht auf eine Hybrid-Pressen-Anlage nach der Erfindung,
  • Fig. 3 eine Draufsicht auf die in Fig. 2 gezeigte Hybrid-Pressen-Anlage unter Weglassung der Kopfstücke,
  • Fig. 4 eine Seitenansicht auf die Hybrid-Pressen-Anlage nach Fig. 2 und
  • Fig. 5 eine vergrößerte Darstellung der in Fig. 2 gezeigten Einzelheit Z.
The invention will be explained below with the aid of exemplary embodiments. The drawing shows in the
  • 1A to 1 F the development from the press line via the multi-column transfer press to the hybrid press system,
  • 2 is a front view of a hybrid press system according to the invention,
  • 3 is a plan view of the hybrid press system shown in FIG. 2 with the head pieces omitted,
  • Fig. 4 is a side view of the hybrid press system according to Fig. 2 and
  • Fig. 5 is an enlarged view of the detail Z shown in Fig. 2.

In den Fig. 1A bis 1 F sind gleiche Bauelemente mit gleichen Kennziffern versehen worden. Fig. 1A zeigt eine Pressenstraße mit einer Kopfpresse 1 und weiteren Folgepressen 2. Das von einer Zufuhreinrichtung 3 der Kopfpresse 1 zugeführte Blechteil wird in dieser von einem Blechhalterstößel in einem Zieh-Werkzeug gehalten und von einem weiteren Stößel umgeformt. Die Bewegungen der Stößel zum Halten und zum Umformen erfolgen von oben nach unten. Für die Weiterbearbeitung der Blechteile in den Folgepressen ist somit zumindest eine Wendeeinrichtung 6 erforderlich. Der Transport der Blechteile durch die Pressenstraße bis in die Entnahmeeinrichtung 4 erfolgt vermittels Feeder 5. Mit 9 sind Ständer der Pressen 1, 2 angedeutet.1A to 1 F, the same components have been provided with the same reference numbers. 1A shows a press line with a head press 1 and further follow-up presses 2. The sheet metal part fed from a feed device 3 to the head press 1 is held in this by a sheet metal holder ram in a drawing tool and formed by a further ram. The movements of the tappets for holding and reshaping take place from top to bottom. At least one turning device 6 is therefore required for the further processing of the sheet metal parts in the subsequent presses. The sheet metal parts are transported through the press line to the removal device 4 by means of feeder 5. The stands of the presses 1, 2 are indicated by 9.

Durch Verwendung eines im Pressentisch der Kopfpresse 1 in Fig. 1 B angeordneten Ziehapparats 7 mit von unten nach oben wirkendem Ziehkissen wurde der Abstand zwischen der Kopfpresse 1 und der Folgepresse 2 verringert.By using a drawing apparatus 7 arranged in the press table of the head press 1 in FIG. 1B with a pulling cushion acting from bottom to top, the distance between the head press 1 and the subsequent press 2 was reduced.

Fig. 1C zeigt eine kombinierte Pressen-Anlage mit doppeltwirkender Ziehpresse 1, einer Wendeeinrichtung 6 und einer Drei-Ständer Transferpresse mit den Ständern 9 und einer Einrichtung 8 zum Umsetzen der Werkstücke durch die Bearbeitungsstufen der Transferpresse. Die Werkzeugsätze von z.B. jeweils zwei Bearbeitungsstufen können vermittels Schiebetischen 11 ausgewechselt werden.1C shows a combined press system with a double-acting drawing press 1, a turning device 6 and a three-column transfer press with the stands 9 and a device 8 for transferring the workpieces through the processing stages of the transfer press. The tool sets from e.g. Two processing stages can be exchanged by means of sliding tables 11.

Die in Fig. 1D gezeigte Vier-Ständer-Transferpresse weist mit der doppelt wirkenden Kopfpresse 1 eine von unten nach oben arbeitende Ziehstufe 10 auf und eine durch die Transferpresse geführte Einrichtung 8 zum Umsetzen der Werkstücke.The four-column transfer press shown in FIG. 1D has, with the double-acting head press 1, a drawing stage 10 working from the bottom up and a device 8 for transferring the workpieces which is guided through the transfer press.

In Fig. 1E ist die Kopfpresse 1 eine einfachwirkende Presse mit in den Pressentisch integriertem Ziehapparat 7.In FIG. 1E, the head press 1 is a single-acting press with a pulling device 7 integrated in the press table.

Fig. 1 F zeigt in einer vereinfachten Vorderansicht und Draufsicht eine Hybrid-Pressen-Anlage nach der Erfindung im Vergleich zu den Vorgängerentwicklungsstufen, wie sie im nachfolgenden zu den Fig. 2 bis 5 näher erläutert wird. Wesentliche und neue Elemente der Erfindung sind bereits aus dieser schematischen Darstellung erkennbar. Zwischen jeder Bearbeitungsstufe ist jeweils eine Zwischenablage 12 angeordnet. Jede Bearbeitungsstufe kann sowohl ein Werkzeug für ein zu bearbeitendes Blechteil oder auch mehrere Werkzeuge für mehrere gleichzeitig in der Bearbeitungsstufe zu bearbeitende Blechteile enthalten. Die Einrichtung 13 zum Umsetzen der Werkstücke ist oberhalb der Blechteiletransportebene - oberhalb der Zwischenablagen 12 - orientiert.Fig. 1 F shows a simplified front view and top view of a hybrid press system according to the invention compared to the previous development stages, as will be explained in more detail below with reference to FIGS. 2 to 5. Essential and new elements of the invention can already be seen from this schematic illustration. A clipboard 12 is arranged between each processing stage. Each machining stage can contain both a tool for a sheet metal part to be machined or several tools for several sheet metal parts to be machined simultaneously in the machining stage. The device 13 for transferring the workpieces is oriented above the sheet metal part transport plane - above the intermediate shelves 12.

Entsprechend Fig. 2 werden Blechteile 39 einzeln, oder wenn z.B. beide Innenseiten von Türen eines Personenkraftwagens zu fertigen sind, dann zwei Blechteile 39, 39', vermittels einer Zufuhreinrichtung 3 der Kopfpresse 1 zugeführt. Die Kopfpresse 1 ist beispielsweise eine Ziehpresse mit einem Ziehapparat 7. Die Ziehpresse 1 weist vier Ständer auf. Mit 18 ist das linke Ständerpaar, mit 16 das rechte Ständerpaar positioniert. Die derZiehpresse 1 nachgeordneten Folgepressen 2 sind mit weiteren Bearbeitungsfolgen fürdie Bearbeitung der Blechteile 39 ausgerüstet. Die Bearbeitung umfaßt ggf. auch Nachziehstufen. Die Folgenpressen 2 weisen gleichfalls vier Ständer 16, 17 auf. Die vorne befindlichen Ständer 16, 17, 18 sind insgesamt nicht dargestellt worden. Die Pressen 1, 2 sind nebeneinander aufgestellt mit nur geringfügigem Abstand der abstützenden Bereiche der Ständer 16, 17. Die Kopfstücke 21 der Pressen 1, 2 sind über Paßstücke 22 auf den abstützenden, tragenden Bereichen der Ständer 18, 16 bzw. 17, 16 aufgesetzt und durch Spannanker 46, Fig. 3, 4, 5, gehalten. Jede Presse 1, weist einen über Pleuel 25 vertikal bewegbaren Stößel 26 auf. Es sind je Stößel 26 jeweils vier Pleuel 25 vorhanden. Wie es Fig. 2 in Verbindung mit Fig. 4 für die Ziehpresse 1 erkennen läßt, greifen die Pleuel 25 an diagonal, entfernt voneinander liegenden Druckpunkten 27 an dem Stößel 26 an. Die Pleuel 25 sind Kurven-, oder wie es Fig. 4 zeigt, Kurbelwellen-getrieben. Der Antrieb erfolgt über eine Welle 23, die sich über die Länge der Hybrid Pressen-Anlage erstreckt und die von einem Hauptmotor 45, in Fig. 4, ggf. auch von einem zweiten Motor, über eine Kupplungs-Bremseinheit 24 gedreht wird. Jeder Presse 1, 2 ist ein Pressentisch 15 zugeordnet, über den sich die Ständer 18, 16 bzw. 17, 16 bzw. deren abstützende Bereiche auf Stützen 19 abstützen. Zwischen den Pressentischen 15 und den Ständern 16 bis 18 sind gleichfalls Paßstücke 22 eingesetzt, um auch hier Seitenversetzungen zu vermeiden. Die Kopfstücke 21 und die Pressentische 15 sind gleichfalls mit geringem Abstand, Spalt 47, zueinander aufgesetzt zur Vermeidung gegenseitiger Beeinflussungen. Die für die Ständer 16 bis 18 gemeinsamen Stützen 19 sind auf Aufstellflächen 20 des Fundaments 14 aufgestellt. Jedem Stößel 26 ist ein Schiebetisch 11 zugeordnet, über die die einzelnen Werkzeuge 28, 29 austauschbar sind. Zwischen jeweils zwei Pressen 1, 2 bzw. 2, 2 mit den durch die Werkzeuge 28, 29 charakterisierten Bearbeitungsstufen ist eine Zwischenablage 12 angeordnet. Die Zwischenablagen 12 sind z.B. mittig zu den Mittenabständen der Werkzeuge 28, 29 und zwischen den Ständern 16, 17 a ngeordnet, um so die Umsetzbewegung der Blechteile 39 je Stößelhub zu halbieren.2 sheet metal parts 39 are individually, or if e.g. Both inner sides of doors of a passenger car are to be manufactured, then two sheet metal parts 39, 39 'are fed to the head press 1 by means of a feed device 3. The head press 1 is, for example, a drawing press with a drawing device 7. The drawing press 1 has four stands. The left pair of stands is positioned at 18 and the right pair of stands at 16. The downstream presses 2 downstream of the drawing press 1 are equipped with further processing sequences for processing the sheet metal parts 39. The processing may also include re-drawing stages. The follow presses 2 also have four stands 16, 17. The stands 16, 17, 18 located at the front have not been shown overall. The presses 1, 2 are set up side by side with only a slight distance between the supporting areas of the stands 16, 17. The head pieces 21 of the presses 1, 2 are placed on the supporting, supporting areas of the stands 18, 16 and 17, 16 by means of fitting pieces 22 and held by tension anchors 46, Fig. 3, 4, 5. Each press 1 has a plunger 26 which can be moved vertically via connecting rods 25. There are four connecting rods 25 for each tappet 26. As can be seen in FIG. 2 in connection with FIG. 4 for the drawing press 1, the connecting rods 25 engage the plunger 26 at diagonally spaced pressure points 27. The connecting rods 25 are curve-driven, or as shown in FIG. 4, crankshaft-driven. The drive takes place via a shaft 23 which extends over the length of the hybrid press system and which is rotated by a main motor 45, in FIG. 4, possibly also by a second motor, via a clutch brake unit 24. Each press 1, 2 is assigned a press table 15, by means of which the stands 18, 16 or 17, 16 or their supporting areas are supported on supports 19. Fitting pieces 22 are also inserted between the press tables 15 and the stands 16 to 18, in order to avoid lateral displacements here as well. The head pieces 21 and the press tables 15 are also placed at a small distance, gap 47, from one another in order to avoid mutual interference. The supports 19 common to the uprights 16 to 18 are set up on support surfaces 20 of the foundation 14. A slide table 11 is assigned to each ram 26, via which the individual tools 28, 29 can be exchanged. An intermediate shelf 12 is arranged between each two presses 1, 2 and 2, 2 with the machining stages characterized by the tools 28, 29. The clipboards 12 are e.g. centered on the center distances of the tools 28, 29 and between the stands 16, 17 a, so as to halve the movement of the sheet metal parts 39 per ram stroke.

Für die Umsetzbewegung der Blechteile 39 ist eine Einrichtung zum Umsetzen vorgesehen, die allgemein mit 13 positioniert ist und deren wesentliche Elemente oberhalb der Blechteiletransportebene 35 befindlich sind. Die Umsetzeinrichtung 13 besteht hierbei aus zunächst zwei Laufschienen 36, die sich von der Zufuhreinrichtung 3 bis zur Entnahmeeinrichtung 4 durch die Länge der Hybrid-Pressen-Anlage erstrecken können, wobei eine erste Laufschiene 36 beim Betrachten der Fig. 2 hinter den Stößeln 26 und den Werkzeugoberteilen 28 und eine zweite Laufschiene 36 vor den Stößeln 26 und den Werkzeugoberteilen 28 heb- und senkbar an den Pressen 1, 2 gelagert ist. Die Hebe- und Senkbewegungen der Laufschienen 36 werden über Hebeeinrichtungen 40 erreicht, die an Ständern 16 oder 17 der Pressen 1, 2 angebracht sind und z.B. die horizontale Verstellbewegung jeweils eines vor und hinter den Stößeln 26 geführten Hebegestänges 41 in Vertikalbewegungen für die Laufschienen 36 umsetzen. Die Hebe- und Senkbewegungen der beiden Laufschienen 36 erfolgen synchron und im Takt der Hybrid-Pressen-Anlage vermittels von der Welle 23 über ein Getriebe 30, eine Drehwelle 31, ein Zwischenzahnrad 32 und einen Kurvenabgriff auf Kurvenfolgerhebel 34 übertragene Bewegungen. Jedes der Hebegestänge 41 ist über ein Gelenk mit dem jeweiligen Kurvenfolgerhebel 34 wirkverbunden.For the transfer movement of the sheet metal parts 39, a device for transfer is provided, which is generally positioned at 13 and whose essential elements are located above the sheet metal part transport plane 35. The transfer device 13 here consists of two running rails 36, which can extend from the feed device 3 to the removal device 4 through the length of the hybrid press system, a first running rail 36 when looking at FIG. 2 behind the plungers 26 and Tool upper parts 28 and a second running rail 36 in front of the plungers 26 and the tool upper parts 28 can be raised and lowered on the presses 1, 2. The lifting and lowering movements of the running rails 36 are achieved via lifting devices 40 which are attached to stands 16 or 17 of the presses 1, 2 and e.g. convert the horizontal adjustment movement of a lifting rod 41 guided in front of and behind the tappets 26 into vertical movements for the running rails 36. The lifting and lowering movements of the two running rails 36 take place synchronously and in synchronism with the movements of the hybrid press system by means of the shaft 23 via a gear 30, a rotary shaft 31, an intermediate gear 32 and a cam tap on cam follower 34. Each of the lifting rods 41 is operatively connected to the respective cam follower lever 34 via a joint.

Auf jeder der parallel geführten Laufschienen 36 sind Laufwagen 37 in Längserstreckung der Laufschienen 36 bewegbar. Dabei sind gegenüberliegende Laufwagen 37 untereinander durch Saugerbrücken 42 verbunden, wie es aus Fig. 3 näher erkennbar ist.Carriages 37 can be moved in the longitudinal direction of the running rails 36 on each of the running rails 36. Opposing carriages 37 are connected to one another by suction bridges 42, as can be seen in more detail in FIG. 3.

Der Bewegungsantrieb der Laufwagen 37 in und entgegen der Richtung der Transferbewegung erfolgt über Transportgestänge 38 von Kurvenfolgerhebeln 33 aus, die ebenfalls über das Getriebe 30, die Drehwelle 31, das Zwischenzahnrad 32 und einen Kurvenabgriff bewegt werden. Die erwähnten Kurvenabgriffe kommen hierbei durch Anlage der Kurvenfolgerhebel 33 bzw. 34 an über das Getriebe 30, Getriebegestänge 31 und Zwischenzahnrad 32 drehangetriebenen Steuerkurven 48 (Fig. 3) zustande.The movement drive of the carriages 37 in and against the direction of the transfer movement takes place via transport linkages 38 from cam follower levers 33, which are likewise via the gear 30, the rotary shaft 31, the intermediate gear 32 and a cam tap can be moved. The curve taps mentioned come about here by the cam follower levers 33 and 34 bearing on control cams 48 (FIG. 3) which are driven in rotation via the gear 30, gear linkage 31 and intermediate gear 32.

Fig. 3 entspricht der Darstellung eines horizontalen Schnittes durch die Hybrid-Pressen-Anlage oberhalb der in Fig. 2 mit 35 angedeuteten Blechteiletransportebene.Fig. 3 corresponds to the representation of a horizontal section through the hybrid press system above the sheet metal part transport plane indicated in Fig. 2 with 35.

In der Zuführeinrichtung 3 sind Bleche unterschiedlicher Größe (und Dicke) dargestellt. Mit 39 ist ein großflächiges Ausgangsblech, mit 39' sind zwei kleinere Ausgangsbleche angedeutet. Dementsprechend sind dann ein oder auch zwei Werkzeuge für jede Bearbeitungsstufe in die Hybrid-Pressen-Anlage einzubringen. In jede Presse 1, 2 ist hierfür jeweils ein Schiebetisch 11 über Schienen geschoben. Die auf diesen befestigten und beim Einrichten der Hybrid-Pressen-Anlage auf neue Werkstücke aus- bzw. einwechselbaren Werkzeuge sind nicht dagestellt worden. Jedem Stößel 26 ist ein Werkzeug bzw. sind zwei Werkzeuge aus Werkzeugoberteil 28 und Werkzeugunterteil 29 zugeordnet. Während die Schiebetische 11 aus den Pressen 1, 2 der Hybrid-Pressen Anlage einseitig (zeichnerisch nach oben) herauszufahren sind, können von der anderen Seite der Hybrid-Pressen-Anlage über die, in der Fig. 3 unten dargestellten Schiebetische 11 Werkzeuge eingefahren werden.Sheets of different sizes (and thickness) are shown in the feed device 3. With 39 is a large starting sheet, with 39 'two smaller starting sheets are indicated. Accordingly, one or two tools for each processing stage must then be introduced into the hybrid press system. For this purpose, a sliding table 11 is pushed over rails in each press 1, 2. The tools attached to these and replaceable or replaceable when setting up the hybrid press system for new workpieces have not been shown. Each plunger 26 is assigned a tool or two tools from the upper tool part 28 and lower tool part 29. While the sliding tables 11 are to be moved out of the presses 1, 2 of the hybrid press system on one side (upwards in the drawing), tools can be inserted from the other side of the hybrid press system via the sliding tables 11 shown in FIG. 3 below .

Anhand der Schnittfläche und der unterschiedlichen Schraffurrichtung in den Ständern 16, 17 ist die Mehrteiligkeit der Ständer 16, 17 zu erkennen. Mehrteiligkeit bezieht sich hierbei auf die tragenden, abstützenden Bereiche, nicht jedoch auf Verkleidungsteile. Der Abstand zwischen den Ständern 16, 17, bzw. deren tragenden, abstützenden Bereiche, sowie der Abstand der Kopfstücke 21 und der Pressentische 15 (Fig. 1) zueinander, Spalte 47, ist ein solcher, daß eine gegenseitige Beeinflussung der Einzelpressen 1, 2 ausgeschlossen ist. Darüberhinaus sieht die Erfindung vor, ohne von dem Gedanken der Erfindung abzuweichen, für jeweils zwei aneinander gestellte Pressen jeweils einen Ständer 16, 17 bzw. ein Ständerpaar - vorne- und hintenliegende Anordnung - zu verwenden. Eine Einständer-Anordnung ist auch dann gegeben, wenn innerhalb eines zwei Kopfstücke 21 benachbarter Pressen 1, 2 bzw. 2, 2 abstützenden Ständers 16, 17 zwei Spannanker 46 und zwei, jeweils ein benachbartes Kopfstück 21 abstützender Bereiche in Art von Hülsen mit zentrischen oder einem, dann exzentrischen Spannankern 46 vorhanden sind. Solche Anordnungen führen zu einer wesentlichen Verringerung, bis auf eine vernachlässigbare Größe, der gegenseitigen Beeinflussung benachbarter Bearbeitungsstufen. Mitunter wird bei einer Anordnung mit der zweifachen Anordnung von Spannanker 46 und tragenden, abstützenden Bereichen auch von Zwei-Ständer-Anordnungen gesprochen. Bei Verwendung von jeweils einem Kopfstück 21 und einem Pressentisch 15 je Presse 1, 2 sind diese über den Ständer 16 bzw. 17 untereinander mittelbar verbunden.The multi-part structure of the stands 16, 17 can be seen from the cut surface and the different hatching directions in the stands 16, 17. Multi-part design refers to the load-bearing, supporting areas, but not to cladding parts. The distance between the stands 16, 17, or their load-bearing, supporting areas, and the distance between the head pieces 21 and the press tables 15 (FIG. 1), column 47, is such that the individual presses 1, 2 influence one another is excluded. Furthermore, the invention provides, without deviating from the idea of the invention, to use a stand 16, 17 or a pair of stands — front and rear arrangement — for two presses placed against one another. A one-column arrangement is also given if within a two head pieces 21 of adjacent presses 1, 2 or 2, 2 supporting stands 16, 17 two clamping anchors 46 and two, each supporting an adjacent head piece 21, areas in the manner of sleeves with central or one, then eccentric clamping anchors 46 are present. Such arrangements lead to a significant reduction, apart from a negligible size, in the mutual influence of adjacent processing stages. In the case of an arrangement with the double arrangement of tensioning anchors 46 and supporting, supporting areas, one sometimes speaks of two-column arrangements. When using a head piece 21 and a press table 15 per press 1, 2, these are indirectly connected to one another via the stands 16 and 17.

Darüberhinaus ist die Verwendung eines allen Pressen 1,2 gemeinsamen Kopfstückes 21, wie auch eines einzigen Pressentisches 15, möglich. Die Darstellungen in den Fign. 2 und 3 gehen von Kopfstücken 21 und Pressentischen 15 in der Anzahl der Einzelpressen der gesamten Hybrid-Pressen-Anlage aus, ohne jedoch den Gedanken nach der Erfindung hierauf beschränken zu wollen. Zwischen den benachbarten Bearbeitungsstufen sind Zwischenablagen 12 erkennbar mit den Blechteileaufnahmen 44. Die nach oben weisenden Blechteileaufnahmen 44 zum Abstützen der Blechteile 39 von unten, sind in der Höhe, auf die Größe, Form und Schräglage der Blechteile 39 mittels Stellmittel vollautomatisch einstellbar. Stellmittel, Getriebe und Verstellstangen sind im einzelnen nicht dargestellt worden, da diese Mittel und deren Einbau in die Zwischenablagen 12 ohne weiteres vorstellbar sind.In addition, the use of a head piece 21 common to all presses 1, 2, as well as a single press table 15, is possible. The representations in FIGS. 2 and 3 are based on head pieces 21 and press tables 15 in the number of individual presses of the entire hybrid press system, but without wishing to restrict the idea of the invention thereto. Between the adjacent processing stages, intermediate shelves 12 can be seen with the sheet metal part receptacles 44. The upward facing sheet metal part receptacles 44 for supporting the sheet metal parts 39 from below can be adjusted automatically in height, to the size, shape and inclined position of the sheet metal parts 39 by means of adjusting means. Setting means, gears and adjusting rods have not been shown in detail, since these means and their installation in the clipboards 12 are easily conceivable.

Die Laufwagen 37 können, wie es Fig. 3 zeigt, vermittels des Transportgestänges 38 bei entsprechender Auslegung der Bewegung der Kurvenfolgerhebel 33 unterschiedliche Bewegungen ausführen, um einerseits in Verbindung mit den Hebe-Senk-Bewegungen der Laufschienen 36 Blechteile 39 aus den Werkzeugen 29 heraus in die Zwischenablagen 12 und gleichzeitig Blechteile 39 von den Zwischenablagen 12 in die folgenden Werkzeuge 29 zu transportieren, und um andererseits während der Umformphase in den Zwischenräumen zwischen dem Werkzeug bzw. Stößel einer Presse und der Zwischenablage 12 zu verweilen. Damit die Laufwagen 37 in den einzelnen Bewegungsphasen auch unterschiedlich weite Schritte durchfahren können, sind der erste, dritte, fünfte und jeder übernächste Laufwagen 37 über jeweils ein Transportgestänge 38, das hier zwischen den Laufschienen 36 liegt, und der zweite, vierte und jeder dann übernächste Laufwagen 37 über das außenliegende Transportgestänge 38 bewegbar. Jedes Transportgestänge 38 ist über einen Kurvenfolgerhebel 33 an eine der von der Welle 23 bewegten Steuerkurven 48 gelegt. Die Saugerbrücken 42 sind durch eine zusätzliche Absenkbewegung der Laufschienen 36 auf Stützglieder 43 an den Schiebetischen 11 auflegbar und daran anschließend von den Laufwagen 37 abkuppelbar, um diese zugleich mit den Werkzeugen 28, 29 auszutauschen.The carriages 37 can, as shown in FIG. 3, carry out different movements by means of the transport linkage 38 with an appropriate design of the movement of the cam follower lever 33, in order to on the one hand in conjunction with the lifting and lowering movements of the running rails 36 sheet metal parts 39 out of the tools 29 in to transport the intermediate shelves 12 and, at the same time, sheet metal parts 39 from the intermediate shelves 12 into the following tools 29 and, on the other hand, to remain in the spaces between the tool or ram of a press and the intermediate shelf 12 during the forming phase. So that the carriages 37 can also travel through steps of different lengths in the individual movement phases, the first, third, fifth and each but one carriage after the other 37 each have a transport linkage 38, which here lies between the rails 36, and the second, fourth and each one after that Carriage 37 movable over the external transport linkage 38. Each transport linkage 38 is placed via a cam follower lever 33 on one of the control cams 48 moved by the shaft 23. The suction bridges 42 can be placed on support members 43 on the sliding tables 11 by means of an additional lowering movement of the running rails 36 and can then be uncoupled from the running carriages 37 in order to exchange them with the tools 28, 29 at the same time.

In der Fig. 4 ist der Antrieb der Welle 23 und der Antrieb des Stößels 26 der Pressen, hier der Ziehpresse 1, angedeutet. In dem Gestell der Ziehpresse 1 ist ein Motor 45 festgesetzt, der vermittels Keilriemen und Schwungmasse die Welle 23 über eine Kupplungs-Bremseinheit 24 dreht. Von dieser Welle 23 werden die Bewegungen der Stößel 26 der Pressen 1, 2, die Hebe-Senk-Bewegungen der Laufschienen 36 und die Transferbewegungen der Laufwagen 37 abgegriffen, um so Synchronität der Bewegungen zu erreichen. Die Verstellbewegungen der Blechteileaufnahmen 44 sind durch Pfeile angedeutet. Die Kennziffern 13 verweisen auf die Umsetzeinrichtung für die Blechteile 39, mit dem Hebe-Gestänge 41 für die Laufschienen 36, den Laufwagen 37 und den Saugerbalken 42 mit angedeuteten z.B. Unterdruck-Haltemitteln, Saugern. Mit 46 sind Spannanker beziffert zwischen Kopfstück 21 und Pressentisch 15. Die weiteren Kennziffern dienen der Orientierung beim Vergleich mit den Fig. 2 und 3.4, the drive of the shaft 23 and the drive of the ram 26 of the presses, here the drawing press 1, are indicated. A motor 45 is fixed in the frame of the drawing press 1 and rotates the shaft 23 by means of a V-belt and flywheel mass via a clutch / brake unit 24. From this shaft 23, the movements of the ram 26 of the presses 1, 2, the lifting and lowering movements of the rails 36 and the Trans fer movements of the carriage 37 tapped so as to achieve synchronism of movements. The adjustment movements of the sheet metal part receptacles 44 are indicated by arrows. The reference numbers 13 refer to the conversion device for the sheet metal parts 39, with the lifting linkage 41 for the running rails 36, the carriage 37 and the suction bar 42 with indicated, for example, vacuum holding means, suction cups. At 46, tension anchors are numbered between the head piece 21 and the press table 15. The further reference numbers serve as orientation when comparing with FIGS. 2 and 3.

Fig. 5 dient der besseren Erkennbarkeit der Ständerbereiche bzw. Abstützbereiche zwischen zwei Pressen, z.B. zwischen den Pressen 1 und 2. Die mit 21 bezifferten Kopfstücke sind auf Ständern 16 bzw. 17 vermittels der Paßstücke 22 aufgesetzt. Die Ständer 16, 17 sind auf den Pressentischen 15 vermittels weiterer Paßstücke 22 aufgesetzt. Jede Einzelpresse 1, 2 wird über die Spannanker 46 gehalten. Die Pressentische 15 sind über die Stützen 19 aufgestellt. Wie zuvor bereits angeführt, können die Kopfstücke 21 benachbarter Pressen 1, 2 bzw. 2, 2 auch auf einem, dann gemeinsamen Ständer 16 bzw. 17 bzw. auf einen einzigen, tragenden Bereich eines Ständerns 16, 17 aufgesetzt sein. Desweiteren können die Ständer 16, 17 direkt über eine Stütze 19 aufgestellt sein.Fig. 5 is used for better visibility of the stand areas or support areas between two presses, e.g. between the presses 1 and 2. The head pieces, numbered 21, are placed on stands 16 and 17 by means of the fitting pieces 22. The stands 16, 17 are placed on the press tables 15 by means of further adapters 22. Each individual press 1, 2 is held over the tension anchor 46. The press tables 15 are set up above the supports 19. As already mentioned above, the head pieces 21 of adjacent presses 1, 2 or 2, 2 can also be placed on a then common stand 16 or 17 or on a single, load-bearing region of a stand 16, 17. Furthermore, the stands 16, 17 can be set up directly via a support 19.

Claims (11)

1. Press installation with a number of presses (1, 2) for machining sheet-metal parts (39), with devices for supplying (3) and removing (4) the sheet-metal parts (39) and for transferring (13) the sheet-metal parts (39) in the machining stages (28, 29) and with intermediate repositories (43) in the idle stages, each of the presses (1, 2) having a ram (26) for machining which is can be moved up and down by means of drive (23,24,45), a press bed (15) and press stands (16, 17, 18) for supporting the headpiece (21) and a sliding table (11) for tool change assigned to the ram (26), characterised in that
- further follow-on presses (2) are arranged downstream of the head press (1) and the presses (1, 2) as a whole are, to reduce the transport travel between the presses (1, 2), erected with only a slight spacing (gaps 47) and adjacently to one another,
- the headpieces (21) are in each case held separately via a supporting region of one of the adjacently erected stands (16, 17, 18),
- each of the rams (26) is assigned only one machining stage per sheet-metal part (39, 39') - at least one tool (28, 29),
- an intermediate repository (12) is in each case arranged between two machining stages,
- the movements of the rams (26) and the movements of the device (13) for transferring the sheet-metal parts (39) are picked up from a common shaft (23),
- the holding means (37, 42) which transfer the sheet-metal parts (39) can be moved by displacement means (33, 38), the holding means (37, 42) and the displacement means (33, 38) being guided or mounted on the presses (1, 2) above the sheet-metal part transport plane (35).
2. Press installation with a number of presses (1, 2) for machining sheet-metal parts (39), with devices for supplying (3) and removing (4) the sheet-metal parts (39) and for transferring (13) the sheet-metal parts (39) in the machining stages (28, 29) and with intermediate repositories (43) in the idle stages, each of the presses (1, 2) having a ram (26) for machining which can be moved up and down by means of drive (23,24,45), a press bed (15) and press stands (16,17,18) for supporting the headpiece (21) and a sliding table (11) for tool change assigned to the ram (26), characterised in that
- further follow-on presses (2) are arranged downstream of the head press (1) and the presses (1, 2) are, to reduce the transport travel between the presses (1,2), erected with only a slight spacing (gaps 47) and adjacently to one another,
- a common supporting region is provided in one of the stands (16, 17) for supporting the headpieces (21) of adjacent presses (1, 2) in each support place,
- each of the rams (26) is assigned only one machining stage per sheet-metal part (39, 39') - at least one tool (28, 29),
- an intermediate repository (12) is arranged between two machining stages,
- the movements of the rams (26) and the movements of the device (13) for transferring the sheet-metal parts (39) are picked up from a common shaft (23),
- the holding means (37, 42) which transfer the sheet-metal parts (39) can be moved by displacement means (33, 38), the holding means (37, 42) and the displacement means (33, 38) being guided or mounted on the presses (1, 2) above the sheet-metal part transport plane (35).
3. Press installation according to Claim 1 or 2, characterised in that the head press (1) is a drawing press with drawing apparatus (7) acting from below and at least one of the follow-on presses (2) is equipped with a redrawing stage.
4. Press installation according to Claim 1 or 2, characterised in that the device (13) for transferring the sheet-metal parts (39) extends through the press installation with its individual presses (1, 2) from the region of supply (3) to the region of removal (4) of the sheet-metal parts (39) and is formed by overhead conveying means (36, 37, 38, 40, 42).
5. Press installation according to Claim 1, characterised in that the mutually opposite stands (16, 17) of adjacent presses (1, 2 or 2, 2) are set up next to one another on a common erection surface (20), in the event of use of correspondingly designed press beds (15) on common erection surfaces (20) via the press beds (15) and further supports (19).
6. Press installation according to Claim 1, characterised in that at least three individual presses (1, 2), of which the first press (1) in the machining sequence is a drawing press, are placed together and the mutually opposite stands (16, 17) of in each case two presses (1, 2 or 2, 2) are erected in pairs, possibly via press beds (15) and supports (19), on common erection surfaces (20).
7. Press installation according to Claim 6, characterised in that the headpieces (21) of adjacent presses (1, 2 or 2, 2) are supported via stands (16, 17) which are in each case common to both headpieces (21).
8. Press installation according to Claim 1 or 2, characterised in that the sheet-metal part receivers (44) of the intermediate repositories (12) can be displaced horizontally and vertically and in relation to an inclined position of the sheet-metal parts (39).
9. Press installation according to Claim 1 or2, characterised in that each ram (26) can be raised and lowered in at least two pressure points (27) via the drive means of the press (1, 2).
10. Press installation according to Claim 1 or 2, characterised in that the synchronisation of the movements of the rams (26) of the presses (1, 2) and of the movements of the devices (13) for transferring the sheet-metal parts (39) in the machining stages for this takes place by a common shaft (23) which is connected to at least one main motor (45) via clutch, brake and the like means (24) and the shaft (23) is mounted, extending over the length of the press installation, in the head region of the press installation.
11. Press installation according to Claim 4, characterised in that the holding means which transfer the sheet-metal parts (39) have sucker bridges (42) which are fastened on running carriages (37) and the running carriages (37) are guided at a spacing from one another in running rails (36), the running rails (36) extending on opposite sides of the rams (26) and tools (28, 29) in the longitudinal direction of the press installation and above the sheet-metal part transport plane (35), and the running carriages (37) being movable in the longitudinal direction of the press installation and the running rails (36) in the raising/lowering direction in the cycle of the press installation.
EP90102072A 1989-02-18 1990-02-02 Press plant with several presses for treating sheet steel parts Expired - Lifetime EP0388610B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90102072T ATE90236T1 (en) 1989-02-18 1990-02-02 PRESS PLANT WITH SEVERAL PRESSES FOR PROCESSING SHEET METAL PARTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3905069A DE3905069C2 (en) 1989-02-18 1989-02-18 Press system with several presses for processing sheet metal parts
DE3905069 1989-02-18

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EP0388610A1 EP0388610A1 (en) 1990-09-26
EP0388610B1 true EP0388610B1 (en) 1993-06-09
EP0388610B2 EP0388610B2 (en) 1998-03-04

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EP (1) EP0388610B2 (en)
JP (1) JPH02247031A (en)
AT (1) ATE90236T1 (en)
CA (1) CA1316047C (en)
DE (2) DE3905069C2 (en)
ES (1) ES2044252T5 (en)
RU (1) RU2076011C1 (en)

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Also Published As

Publication number Publication date
DE3905069A1 (en) 1990-08-23
ATE90236T1 (en) 1993-06-15
ES2044252T3 (en) 1994-01-01
JPH02247031A (en) 1990-10-02
ES2044252T5 (en) 1998-05-01
US5012665A (en) 1991-05-07
EP0388610B2 (en) 1998-03-04
CA1316047C (en) 1993-04-13
DE3905069C2 (en) 2000-10-12
DE59001647D1 (en) 1993-07-15
EP0388610A1 (en) 1990-09-26
RU2076011C1 (en) 1997-03-27

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