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EP1708835A1 - Transport device for workpieces in presses - Google Patents

Transport device for workpieces in presses

Info

Publication number
EP1708835A1
EP1708835A1 EP05707039A EP05707039A EP1708835A1 EP 1708835 A1 EP1708835 A1 EP 1708835A1 EP 05707039 A EP05707039 A EP 05707039A EP 05707039 A EP05707039 A EP 05707039A EP 1708835 A1 EP1708835 A1 EP 1708835A1
Authority
EP
European Patent Office
Prior art keywords
mounting rail
transport device
locks
end pieces
rail
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.)
Granted
Application number
EP05707039A
Other languages
German (de)
French (fr)
Other versions
EP1708835B1 (en
Inventor
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.)
Mueller Weingarten AG
Original Assignee
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
Application filed by Mueller Weingarten AG filed Critical Mueller Weingarten AG
Publication of EP1708835A1 publication Critical patent/EP1708835A1/en
Application granted granted Critical
Publication of EP1708835B1 publication Critical patent/EP1708835B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • 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
    • 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 transport device for workpieces through processing stations of a press, in particular a step press or the like, according to the preamble of claim 1.
  • step press If the production of a workpiece requires several machining processes, such as cutting and forming, the individual operations required for economical production are carried out in a so-called step press.
  • the number of tools then corresponds to the number of work stages that are required for the manufacturing process of the workpieces.
  • the transport device can be designed as a 2-axis transfer or 3-axis transfer, which defines the movement axes of the means of transport.
  • the transport device can be designed as a 2-axis transfer or 3-axis transfer, which defines the movement axes of the means of transport.
  • support rails running through the press on both sides are provided, on which cross members equipped with suction cups or the like for workpiece transport
  • BESTATIGUNGSKOPIE are attached, which perform an overlapping horizontal and vertical movement.
  • the mounting rails are designed as so-called gripper rails, which perform a transverse movement in addition to the horizontal and vertical movement and grip the workpiece by means of gripper elements in order to transport it from one processing stage to the next.
  • the 3-axis or gripper transfer is preferably used for transporting externally graspable, rigid sheet metal parts.
  • the three axes can be driven directly via cams and levers from the press drive or each movement axis is equipped with its own drive.
  • a 3-axis transfer, each with its own drives, is disclosed in US Pat. No. 4,887,446.
  • the vertical movement and the closing movement, transversely to the direction of the press run, is carried out by means of electric motors or hydraulic cylinders.
  • An electric linear drive is proposed for executing the horizontal movement of the mounting rails.
  • a device for coupling and uncoupling gripper rail parts is described in detail in DE 36 36 010.
  • Gripper rail lock is proposed a device acting on the swing clamp principle.
  • In addition to the necessary complex design requires in particular the achievement of a free space of the gripper rail parts to each other, for the changing process, a considerable effort.
  • this movement can also be carried out by transport carriages on the mounting rails.
  • the invention has for its object to design such a device for a press and in particular for a press with two 'or three-axis transfer a linear drive for the horizontal movement that this is constructed inexpensively and at a high power requirement results in a compact design.
  • the linear drive should enable easy replacement of the gripper rails when changing tools.
  • the invention is based on the idea of providing two linear drives per mounting rail for the horizontal movement.
  • These linear drives are arranged in such a way that the carrier rail can be changed in a simple manner.
  • the linear motors are located essentially at the outer ends of the mounting rail. These are outer ends separate from the mounting rail to be replaced and releasably connected to it via mounting rail locks.
  • the mounting rail locks are also located in the independent end pieces and only one clamping head engages in the replaceable mounting rail.
  • the connection is released and the end pieces are moved apart horizontally by a defined amount by means of the linear motors, which makes it easy to change tools.
  • the rail lock can be formed in a very simple form by this sequence of movements.
  • the support rail is designed as a gripper rail in a 3-axis transfer that is preferably used.
  • the press table is designed as a sliding table on which the tool is located. All part-dependent accessories required for workpiece transport are also placed on the sliding table and moved out of the press.
  • a new tool is clamped on a sliding table outside the press and the part-dependent accessories are arranged.
  • the press is automatically converted to the new production and the replaced rail parts are also tensioned by the rail locks.
  • the linear drives move the mounting rail end pieces with the mounting rail locks located therein so far in the direction of the mounting rail that the clamping heads can engage in the receptacle provided in the mounting rail.
  • the mounting rail locks tension the mounting rail and the End pieces together and thereby the mounting rail is also firmly connected to the linear drive.
  • linear drives advantageously fulfills the task.
  • Recent developments have made drives with high dynamics and fast stroke rates available. Since these drives work without wear, a permanent high positioning accuracy is guaranteed over the entire life cycle.
  • the operational safety is increased when two drives are used, since if one drive fails, the second drive moves the mounting rail and in particular the grippers on a gripper rail out of the collision area.
  • the invention is used particularly advantageously in a 3-axis transfer. Further advantages and details of the invention result from the description and the figures of an exemplary embodiment.
  • FIG 1 partial view of a step press with a tensioned support rail, which is designed as a gripper rail.
  • Figure 2 as Figure 1, but with the gripper rail released Figure 3 detail of the gripper rail
  • the exemplary embodiment describes a 3-axis transfer with gripper rail drive.
  • the plunger 2 and sliding table 3 is shown by a step press 1 to which the upper tools 4 and lower tools 5 are attached.
  • the so-called lock boxes 8, 9 are arranged in the area of the stands 6, 7. These lock boxes 8, 9 are provided with drive devices which carry out a vertical and a closing stroke of the gripper rail 10.
  • Such lock boxes 8, 9 are known and e.g. in DE 43 36 854 AI of the applicant described in detail.
  • the gripper rail 10 also includes the gripper rail end pieces 11, 12. The connections of the gripper rail 10 with the end pieces 11, 12 "result in gripper rail locks 13.
  • the gripper rail locks 13 are designed as pivot clamps or rotary tension clamps, the base bodies 14 of which are directly connected to the tensioning drive Hollow profile of the gripper rail end pieces 11, 12 are integrated, while the clamping heads 15 engage and clamp in the corresponding receptacles of the gripper rail 10.
  • the linear drives are designated 16 and 17 and consist of a primary part 18, 19 and a secondary part 20, 21.
  • the primary part 18, 19 is arranged on the locking boxes 8, 9.
  • the secondary part 20 is connected to the gripper rail end piece 11 while the secondary part 21 is divided and is fastened to both the gripper rail 10 and the gripper rail end piece 12.
  • the linear drives 16, 17 effect the horizontal movement of the workpieces in the transport direction 22 as well as the return stroke against the transport direction 22 in the 3-axis transfer.
  • FIG. 2 The situation for a tool change is shown in FIG. 2.
  • the gripper rail locks 13 are open and the linear drives 16, 17 move the gripper rail end pieces 11, 12 horizontally and in opposite directions to such an extent that there is free space for the gripper rail 10.
  • the uncoupled gripper rail 10 is placed and held on receptacles 23 which are located on the sliding table 3.
  • the division of the secondary part 21 into a part which is fastened to the gripper rail 10 and a part which is located on the gripper rail end piece 12 enables the required space for changing the gripper rail with the shortest design and little horizontal movement.
  • FIG. 3 A detail of the invention is shown in FIG. 3.
  • the arrangement of the linear drive 16 can be seen in the sectional view in the region of the gripper rail part.
  • the primary part 18 is connected to a receptacle 23 of the lock case 8.
  • the secondary part 20 is fastened to the gripper rail end piece 11.
  • the clamping head 15 is in the swiveled-in clamping position of the gripper rail lock.
  • the gripper rail end piece 11 is guided and held in the receptacle 23 by the linear guides 24.
  • the invention is not restricted to the exemplary embodiment shown and described. It also encompasses all professional further training within the framework of the inventive idea.
  • the device according to the invention can in principle also be transferred to a 2-axis transfer with suction beam workpiece transport.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Specific Conveyance Elements (AREA)
  • Manipulator (AREA)
  • Reciprocating Conveyors (AREA)
  • Automatic Assembly (AREA)

Abstract

A transport device is disclosed, in particular, a 3-way transfer for progressive presses (1), in which linear drives (16, 17) are incorporated and operated for horizontal displacement such as to permit a simple exchange of the grab rails on exchange of tools with a compact construction of the linear drives (16, 17). The transport device is characterized in that, in order to carry out the horizontal displacement in the workpiece transport direction, at least two linear drives (16, 17) are provided for each support rail (10).

Description

"Transportvorrichtung für Werkstücke in Pressen""Transport device for workpieces in presses"
Beschreibungdescription
Die Erfindung betrifft eine Transportvorrichtung von Werkstücken durch Bearbeitungsstationen einer Presse, insbesondere Stufenpresse oder dergleichen nach dem Oberbegriff des Anspruchs 1.The invention relates to a transport device for workpieces through processing stations of a press, in particular a step press or the like, according to the preamble of claim 1.
Stand der TechnikState of the art
Erfordert die Herstellung eines Werkstückes mehrere Bearbeitungsabläufe, wie Schneiden und Umformen, so werden zur wirtschaftlichen Fertigung die erforderlichen Einzeloperationen in einer so genannten Stufenpresse durchgeführt. Die Anzahl der Werkzeuge entspricht dann der Anzahl der Arbeitsstufen, die zum Herstellungsprozess der Werkstücke erforderlich sind.If the production of a workpiece requires several machining processes, such as cutting and forming, the individual operations required for economical production are carried out in a so-called step press. The number of tools then corresponds to the number of work stages that are required for the manufacturing process of the workpieces.
In den Pressen befinden sich Transportvorrichtungen mit denen die Werkstücke von einen Arbeitsstation zur nächsten transportiert werden. Die Transportvorrichtung kann als 2- Achs-Transfer oder 3-Achs-Transfer ausgeführt werden, womit die Bewegungsachsen der Transportmittel definiert werden. Bei einem 2-Achs-Transfer sind beidseitig durch die Presse verlaufende Tragschienen vorgesehen an denen mit Saugern oder dergleichen bestückte Quertraversen zum WerkstücktransportThere are transport devices in the presses with which the workpieces are transported from one work station to the next. The transport device can be designed as a 2-axis transfer or 3-axis transfer, which defines the movement axes of the means of transport. In the case of a 2-axis transfer, support rails running through the press on both sides are provided, on which cross members equipped with suction cups or the like for workpiece transport
BESTATIGUNGSKOPIE befestigt sind, die eine sich überlagernde Horizontal- und Vertikalbewegung ausführen.BESTATIGUNGSKOPIE are attached, which perform an overlapping horizontal and vertical movement.
Bei einem 3-Achs-Transfer sind die Tragschienen als sogenannte Greiferschienen ausgebildet, die zusätzlich zur Horizontal- und Vertikalbewegung noch eine Querbewegung ausführen und mittels Greiferelemente das Werkstück greifen, um dieses von einer Bearbeitungsstufe zur Nächsten zu transportieren. In der Praxis wird der 3-Achs- oder Greifer- Transfer vorzugsweise zum Transportieren von außen greifbaren, biegesteifen Blechteilen verwendet.In the case of a 3-axis transfer, the mounting rails are designed as so-called gripper rails, which perform a transverse movement in addition to the horizontal and vertical movement and grip the workpiece by means of gripper elements in order to transport it from one processing stage to the next. In practice, the 3-axis or gripper transfer is preferably used for transporting externally graspable, rigid sheet metal parts.
Der Antrieb der drei Achsen kann direkt über Kurvenscheiben und Hebel vom Pressenantrieb erfolgen oder jede Bewegungsachse ist mit einem Eigenantrieb ausgerüstet. Ein 3- Achs-Transfer mit jeweils eigenen Antrieben ist in dem US- Patent 4,887,446 offenbart. Die Vertikalbewegung sowie die Schließbewegung, quer zur Pressendurchlaufrichtung, erfolgt mittels Elektromotoren oder Hydraulikzylindern. Für die Ausführung der Horizontalbewegung der Tragschienen wird ein elektrischer Linearantrieb vorgeschlagen.The three axes can be driven directly via cams and levers from the press drive or each movement axis is equipped with its own drive. A 3-axis transfer, each with its own drives, is disclosed in US Pat. No. 4,887,446. The vertical movement and the closing movement, transversely to the direction of the press run, is carried out by means of electric motors or hydraulic cylinders. An electric linear drive is proposed for executing the horizontal movement of the mounting rails.
Nähere Angaben über den Linearantrieb und insbesondere über die Längen des Primär- und Sekundärteils sind nicht in dem Patent aufgeführt, ebenso wird auch der bei einer Umrüstung erforderliche Wechsel der Greiferschienen nicht offenbart.Further details on the linear drive and in particular on the lengths of the primary and secondary parts are not listed in the patent, nor is the change of the gripper rails required for a retrofit disclosed.
Eine Vorrichtung zum Kuppeln und Entkuppeln von Greiferschienenteilen ist in der DE 36 36 010 ausführlich beschrieben. Als Verbindungselement bzw.A device for coupling and uncoupling gripper rail parts is described in detail in DE 36 36 010. As a connecting element or
Greiferschienenschloss wird eine nach dem Schwenkspanner- Prinzip wirkende Vorrichtung vorgeschlagen. Neben der erforderlichen komplexen Gestaltung bedingt insbesondere die Erzielung eines Freiraumes der Greiferschienenteile zueinander, zum Wechselvorgang, einen erheblichen Aufwand.Gripper rail lock is proposed a device acting on the swing clamp principle. In addition to the necessary complex design requires in particular the achievement of a free space of the gripper rail parts to each other, for the changing process, a considerable effort.
Anstelle der Horizontalbewegung der Tragschienen kann diese Bewegung auch durch Transportwagen auf den Tragschienen erfolgen.Instead of the horizontal movement of the mounting rails, this movement can also be carried out by transport carriages on the mounting rails.
Aufgabe und Vorteil der ErfindungObject and advantage of the invention
Der Erfindung liegt die Aufgabe zugrunde, für eine Presse und insbesondere für eine Stufenpresse mit Zwei-'oder Drei-Achs- Transfer einen Linearantrieb für die Horizontalbewegung derart auszubilden, dass dieser kostengünstig ausgebildet ist und auch bei hoher Leistungsanforderung eine kompakte Bauform ergibt. Zusätzlich soll der Linearantrieb bei einem .Werkzeugwechsel einen einfachen Austausch der Greiferschienen ermöglichen.The invention has for its object to design such a device for a press and in particular for a press with two 'or three-axis transfer a linear drive for the horizontal movement that this is constructed inexpensively and at a high power requirement results in a compact design. In addition, the linear drive should enable easy replacement of the gripper rails when changing tools.
Diese Aufgabe wird ausgehend von einer Transportvorrichtung nach dem Oberbegriff des Anspruchs 1 durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. In den Unteransprüchen sind vorteilhafte und zweckmäßige Weiterbildungen der erfindungsgemäßen Transportvorrichtung angegeben.This object is achieved on the basis of a transport device according to the preamble of claim 1 by the characterizing features of claim 1. Advantageous and expedient developments of the transport device according to the invention are specified in the subclaims.
Der Erfindung liegt der Gedanke zugrunde zwei Linearantriebe pro Tragschiene für die Horizontalbewegung vorzusehen. Diese Linearantriebe werden derart angeordnet, dass auf einfache Weise der Wechsel der Tragschiene möglich ist. Zu diesem Zweck befinden sich die Linearmotoren im Wesentlichen an den äußeren Enden der Tragschiene. Diese äußeren Enden sind getrennt von der auszuwechselnden Tragschiene und mit dieser über Tragschienenschlösser lösbar verbunden. Die Tragschienenschlösser befinden sich ebenfalls in den eigenständigen Endstücken und lediglich ein Spannkopf greift in die auswechselbare Tragschiene ein. Für den Wechselvorgang wird die Verbindung gelöst und mittels der Linearmotoren die Endstücke um einen definierten Betrag horizontal auseinander gefahren, wodurch ein problemloser Werkzeugwechsel möglich ist. In vorteilhafter Weise kann durch diesen Bewegungsablauf das Tragschienenschloss in einer sehr einfachen Form ausgebildet werden. Die Tragschiene ist bei einem vorzugsweise verwendeten 3-Achs-Transfer als Greiferschiene ausgebildet.The invention is based on the idea of providing two linear drives per mounting rail for the horizontal movement. These linear drives are arranged in such a way that the carrier rail can be changed in a simple manner. For this purpose, the linear motors are located essentially at the outer ends of the mounting rail. These are outer ends separate from the mounting rail to be replaced and releasably connected to it via mounting rail locks. The mounting rail locks are also located in the independent end pieces and only one clamping head engages in the replaceable mounting rail. For the changing process, the connection is released and the end pieces are moved apart horizontally by a defined amount by means of the linear motors, which makes it easy to change tools. Advantageously, the rail lock can be formed in a very simple form by this sequence of movements. The support rail is designed as a gripper rail in a 3-axis transfer that is preferably used.
Für den eigentlichen Umrüstvorgang ist der Pressentisch als Schiebetisch ausgebildet auf dem sich das Werkzeug befindet. Auch alles für den Werkstücktransport erforderliche teileabhängige Zubehör wird ebenfalls auf dem Schiebetisch abgelegt und aus der Presse gefahren.For the actual changeover process, the press table is designed as a sliding table on which the tool is located. All part-dependent accessories required for workpiece transport are also placed on the sliding table and moved out of the press.
Auf einem außerhalb der Presse befindlichen Schiebetisch ist ein neues Werkzeug aufgespannt und das teileabhängige Zubehör angeordnet. Nach erfolgtem Wechsel der Schiebetische wird die Presse vollautomatisch auf die neue Produktion umgerüstet und auch die ausgetauschten Tragschienenteile durch die Tragschienenschlösser gespannt. Zu diesem Zweck fahren die Linearantriebe die Tragschienen-Endstücke mit den darin befindlichen Tragschienenschlösser soweit in Richtung der Tragschiene, dass die Spannköpfe in die in der Tragschiene vorgesehenen Aufnahme eingreifen können. Die Tragschienenschlösser spannen die Tragschiene und die Endstücke zusammen und dadurch wird die Tragschiene auch fest mit dem Linearantrieb verbunden.A new tool is clamped on a sliding table outside the press and the part-dependent accessories are arranged. After the sliding tables have been changed, the press is automatically converted to the new production and the replaced rail parts are also tensioned by the rail locks. For this purpose, the linear drives move the mounting rail end pieces with the mounting rail locks located therein so far in the direction of the mounting rail that the clamping heads can engage in the receptacle provided in the mounting rail. The mounting rail locks tension the mounting rail and the End pieces together and thereby the mounting rail is also firmly connected to the linear drive.
Die vorgeschlagene Verwendung von Linearantrieben erfüllt in vorteilhafter Weise die gestellte Aufgabe. Durch neuere Entwicklungen stehen Antriebe mit hoher Dynamik und schneller Hubfolge zur Verfügung. Da diese Antriebe verschleißfrei arbeiten ist eine bleibende hohe Positioniergenauigkeit über den gesamten Lebenszyklus gewährleistet.The proposed use of linear drives advantageously fulfills the task. Recent developments have made drives with high dynamics and fast stroke rates available. Since these drives work without wear, a permanent high positioning accuracy is guaranteed over the entire life cycle.
Aufgrund der hohen Leistungsdichte, der Aufteilung auf zwei Antriebe pro Tragschiene und die Integration direkt an die Tragschienenenden wird eine kompakte und preiswerte Ausführung erreicht.Due to the high power density, the division into two drives per mounting rail and the integration directly at the mounting rail ends, a compact and inexpensive design is achieved.
Als weiterer Vorteil wird bei der Verwendung von zwei Antrieben die Betriebssicherheit erhöht da bei dem Ausfall •eines Antriebes der zweite Antrieb die , Tragschiene und insbesondere die Greifer an einer Greiferschiene aus dem Kollisionsbereich fährt.As a further advantage, the operational safety is increased when two drives are used, since if one drive fails, the second drive moves the mounting rail and in particular the grippers on a gripper rail out of the collision area.
Besonders vorteilhaft wird die Erfindung bei einem 3-Achs- Transfer eingesetzt. Weitere Vorteile und Einzelheiten der Erfindung ergeben sich aus der Beschreibung und den Figuren eines Ausführungsbeispiels.The invention is used particularly advantageously in a 3-axis transfer. Further advantages and details of the invention result from the description and the figures of an exemplary embodiment.
Die Figuren zeigen:The figures show:
Figur 1 Teilansicht einer Stufenpresse mit gespannter Tragschiene, die als Greiferschiene ausgebildet ist. Figur 2 wie Figur 1, jedoch mit gelöster Greiferschiene Figur 3 Einzelheit der GreiferschieneFigure 1 partial view of a step press with a tensioned support rail, which is designed as a gripper rail. Figure 2 as Figure 1, but with the gripper rail released Figure 3 detail of the gripper rail
Beschreibung eines AusführungsbeispielsDescription of an embodiment
Das Ausführungsbeispiel beschreibt einen 3-Achs-Transfer mit Greiferschienenantrieb. In Figur 1 ist von einer Stufenpresse 1 der Stößel 2 und Schiebetisch 3 dargestellt an denen die Oberwerkzeuge 4 und Unterwerkzeuge 5 befestigt sind. Im Bereich der Ständer 6, 7 sind die so genannten Schließkästen 8, 9 angeordnet. Diese Schließkästen 8, 9 sind mit Antriebeseinrichtungen versehen die einen Vertikal- und einen Schließhub der Greiferschiene 10 durchführen. Derartige Schließkästen 8, 9 sind bekannt und z.B. in der DE 43 36 854 AI des Anmelders ausführlich beschrieben. Zur Greiferschiene 10 gehören auch die Greiferschienen-Endstücke 11, 12. Die Verbindungen der Greiferschiene 10 mit den Endstücken 11, 12 "bewirken Greiferschienenschlösser 13. Die Greiferschienenschlösser 13 sind als Schwenkspanner bzw. Dreh-Zugspanner ausgeführt deren Grundkörper.14 mit dem Spannantrieb direkt im Hohlprofil der Greiferschienen- Endstücke 11, 12 integriert sind, während die Spannköpfe 15 in die entsprechenden Aufnahmen der Greiferschiene 10 eingreifen und spannen.The exemplary embodiment describes a 3-axis transfer with gripper rail drive. In Figure 1, the plunger 2 and sliding table 3 is shown by a step press 1 to which the upper tools 4 and lower tools 5 are attached. The so-called lock boxes 8, 9 are arranged in the area of the stands 6, 7. These lock boxes 8, 9 are provided with drive devices which carry out a vertical and a closing stroke of the gripper rail 10. Such lock boxes 8, 9 are known and e.g. in DE 43 36 854 AI of the applicant described in detail. The gripper rail 10 also includes the gripper rail end pieces 11, 12. The connections of the gripper rail 10 with the end pieces 11, 12 "result in gripper rail locks 13. The gripper rail locks 13 are designed as pivot clamps or rotary tension clamps, the base bodies 14 of which are directly connected to the tensioning drive Hollow profile of the gripper rail end pieces 11, 12 are integrated, while the clamping heads 15 engage and clamp in the corresponding receptacles of the gripper rail 10.
Die Linearantriebe sind mit 16 und 17 bezeichnet und bestehen aus einem Primärteil 18, 19 und einem Sekundärteil 20, 21. Der Primärteil 18, 19 ist auf den Schließkästen 8, 9 angeordnet. Der Sekundärteil 20 ist dem Greiferschienen- Endstück 11 verbunden während der Sekundärteil 21 geteilt ist und sowohl an der Greiferschiene 10 als auch am Greiferschienen-Endstück 12 befestigt ist. Die Linearantriebe 16, 17 bewirken beim 3-Achs-Transfer die Horizontalbewegung der Werkstücke in Transportrichtung 22 als auch den Rückhub gegen die Transportrichtung 22.The linear drives are designated 16 and 17 and consist of a primary part 18, 19 and a secondary part 20, 21. The primary part 18, 19 is arranged on the locking boxes 8, 9. The secondary part 20 is connected to the gripper rail end piece 11 while the secondary part 21 is divided and is fastened to both the gripper rail 10 and the gripper rail end piece 12. The linear drives 16, 17 effect the horizontal movement of the workpieces in the transport direction 22 as well as the return stroke against the transport direction 22 in the 3-axis transfer.
Gut erkennbar ist durch die vorgeschlagene Aufteilung der Antriebe deren kurze und kompakte Bauform.The proposed distribution of the drives clearly shows their short and compact design.
Die Situation für einen Werkzeugwechsel zeigt Figur 2. Die Greiferschienenschlösser 13 sind geöffnet und durch die Linearantriebe 16, 17 sind die Greiferschienen-Endstücke 11, 12 horizontal und entgegengesetzt soweit auseinander gefahren, dass ein Freiraum zur Greiferschiene 10 gegeben ist. Die abgekuppelte Greiferschiene 10 ist auf Aufnahmen 23, die sich am Schiebetisch 3 befinden, abgelegt und gehalten.The situation for a tool change is shown in FIG. 2. The gripper rail locks 13 are open and the linear drives 16, 17 move the gripper rail end pieces 11, 12 horizontally and in opposite directions to such an extent that there is free space for the gripper rail 10. The uncoupled gripper rail 10 is placed and held on receptacles 23 which are located on the sliding table 3.
Die Aufteilung des Sekundärteils 21 in einen Teil der an der Greiferschiene 10 befestigt ist und einen Teil welcher sich am Greiferschienen-Endstück 12 befindet ermöglicht bei kürzester Bauform und geringer Horizontalverfahrung den erforderlichen Freiraum zum Greiferschienenwechsel.The division of the secondary part 21 into a part which is fastened to the gripper rail 10 and a part which is located on the gripper rail end piece 12 enables the required space for changing the gripper rail with the shortest design and little horizontal movement.
Eine Einzelheit der Erfindung zeigt Figur 3. In der Schnittdarstellung, im Bereich der Greiferschienen- Teilstelle, ist die Anordnung des Linearantriebes 16 zu sehen. Der Primärteil 18 ist mit einer Aufnahme 23 des Schließkastens 8 verbunden. Am Greiferschienen-Endstück 11 ist der Sekundärteil 20 befestigt. Von dem Greiferschienenschloss befindet sich der Spannkopf 15 in eingeschwenkter Spannstellung.A detail of the invention is shown in FIG. 3. The arrangement of the linear drive 16 can be seen in the sectional view in the region of the gripper rail part. The primary part 18 is connected to a receptacle 23 of the lock case 8. The secondary part 20 is fastened to the gripper rail end piece 11. The clamping head 15 is in the swiveled-in clamping position of the gripper rail lock.
Durch die Linearführungen 24 ist das Greiferschienen-Endstück 11 in der Aufnahme 23 geführt und gehalten. Die Erfindung ist nicht auf das dargestellte und beschriebene Ausführungsbeispiel beschränkt. Sie umfasst auch alle fachmännischen Weiterbildungen im Rahmen des erfindungsgemäßen Gedankens.The gripper rail end piece 11 is guided and held in the receptacle 23 by the linear guides 24. The invention is not restricted to the exemplary embodiment shown and described. It also encompasses all professional further training within the framework of the inventive idea.
So ist auch die Verwendung von nur einem Linearantrieb zum Wechsel der Greiferschiene möglich. Folgender schematischer Ablauf ist dann erforderlich:This means that only one linear drive can be used to change the gripper rail. The following schematic procedure is then required:
- Öffnen des entgegengesetzt vom aktiven Linearantrieb befindlichen Greiferschienenschlosses- Opening the gripper rail lock opposite to the active linear drive
- Verfahren der Greiferschiene in Wechselstellung- Moving the gripper rail in the change position
- Öffnen des Greiferschienenschlosses auf der Seite des Linearantriebes- Open the gripper rail lock on the side of the linear drive
- Verfahren des Endstückes mit dem Linearantrieb um den für den Greiferschienenwechsel erforderlichen Betrag- Moving the end piece with the linear drive by the amount required for changing the gripper rail
Selbstverständliche lässt sich die erfindungsgemäße Vorrichtung nach dem Ausführungsbeispiel auch auf einen 2- Achs-Transfer mit Saugerbalken-Werkstück-Transport prinzipiell übertragen. Of course, the device according to the invention can in principle also be transferred to a 2-axis transfer with suction beam workpiece transport.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
Stufenpressestage press
Stößeltappet
Schiebetischsliding table
Oberwerkzeugupper tool
Unterwerkzeuglower tool
Ständerstand
Ständerstand
Schließkästenlock cases
Schließkastenlock box
Greiferschienegripper rail
Greiferschienen-EndstückGripper-end
Greiferschienen-EndstückGripper-end
GreiferschienenschlossGripper rails Castle
Grundkörperbody
Spannkopfclamping head
Linearantrieblinear actuator
Linearantrieblinear actuator
Primärteilprimary part
Primärteilprimary part
Sekundärteilsecondary part
Sekundärteilsecondary part
Transportrichtungtransport direction
Aufnahmeadmission
Linearführung linear guide

Claims

Patentansprüche : Claims:
1. Transportvorrichtung zum Transportieren von Werkstücken durch Bearbeitungsstufen insbesondere einer Stufenpresse oder dergleichen, mit zwei parallel zueinander angeordneten, austauschbaren Tragschienen an denen Greifer oder Quertraversen zur Aufnahme und Transport der Werkstücke befestigt sind, wobei die Tragschienen einer horizontale Längsbewegung in und gegen die Teiletransportrichtung durchführen, dadurch gekennzeichnet, dass zur Durchführung der Horizontalbewegung in Werkstücktransportrichtung für jede Tragschiene (10) wenigstens zwei Linearantriebe (16, 17) vorgesehen sind.1.Transport device for transporting workpieces through processing steps, in particular a step press or the like, with two interchangeable support rails arranged parallel to one another, on which grippers or crossbars are fastened for receiving and transporting the workpieces, the support rails carrying out a horizontal longitudinal movement in and against the parts transport direction, characterized in that at least two linear drives (16, 17) are provided for carrying out the horizontal movement in the workpiece transport direction for each mounting rail (10).
2. Transportvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Linearantriebe (16, 17) zumindest teilweise auf Tragschienen-Endstücken (11, 12) angeordnet sind.2. Transport device according to claim 1, characterized in that the linear drives (16, 17) are at least partially arranged on mounting rail end pieces (11, 12).
3. Transportvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass Sekundärteile (20, 21) der Linearantriebe (16, 17) auf Tragschienen-Endstücken (11, 12) angeordnet sind.3. Transport device according to claim 1 or 2, characterized in that secondary parts (20, 21) of the linear drives (16, 17) are arranged on mounting rail end pieces (11, 12).
4. Transportvorrichtung nach Anspruch 1, 2 und 3, dadurch gekennzeichnet, dass die Tragschiene (10) mit Tragschienen-Endstücken (11, 12) durch Tragschienschlösser (13) verbindbar sind und diese Tragschienenschlösser (13) bevorzugt als Dreh-Zugspanner ausgebildet sind. 4. Transport device according to claim 1, 2 and 3, characterized in that the mounting rail (10) with mounting rail end pieces (11, 12) can be connected by mounting rail locks (13) and these mounting rail locks (13) are preferably designed as rotary tension clamps.
5. Transportvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Sekundärteil (21) geteilt ist und ein Teil am Tragschienen-Endstück (12) und das andere Teil and der Tragschiene (10) derart angeordnet sind, dass diese Teile bei gespanntem Tragschienenschloss (13) eine Einheit bilden.5. Transport device according to claim 3, characterized in that the secondary part (21) is divided and a part on the mounting rail end piece (12) and the other part on the mounting rail (10) are arranged such that these parts when the mounting rail lock (13 ) form a unit.
6. Transportvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Linearantriebe (16, 17) unabhängig voneinander fahrbar sind.6. Transport device according to claim 1, characterized in that the linear drives (16, 17) can be driven independently of one another.
7. Transportvorrichtung nach Anspruch 1 bis 4, dadurch gekennzeichnet, dass die Tragschienen-Endstücke (11, 12) bei geöffneten Tragschlössern (13) unabhängig voneinander und entgegengesetzt fahrbar sind.7. Transport device according to claim 1 to 4, characterized in that the support rail end pieces (11, 12) when the support locks (13) are open can be driven independently and in opposite directions.
8. Transportvorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Grundkörper (14) der Tragschienenschlösser (13) in einem Hohlprofil der Tragschienen-Endstücke (11, 12) integriert sind.8. Transport device according to one or more of the preceding claims, characterized in that the base body (14) of the mounting rail locks (13) are integrated in a hollow profile of the mounting rail end pieces (11, 12).
9. Transportvorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass für die Schaffung der Freiräume zum Wechsel der Tragschiene (10) zwei Tragschienenschlösser (13) und wenigstens ein Linearantrieb (16, 17) verwendet wird.9. Transport device according to one or more of the preceding claims, characterized in that two carrier rail locks (13) and at least one linear drive (16, 17) is used to create the free spaces for changing the mounting rail (10).
10. Transportvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass für einen 3- Achstransfer die Tragschienen als Greiferschienen mit Greifern ausgebildet sind, wobei mittels eines Hubmechanismus eine Vertikalbewegung sowie mittels eines Schließ-Öffnungsmechanismus eine Querbewegung zur Teiletransportrichtung durchführbar ist und wobei vorzugsweise mindestens zur Horizontalbewegung ein Linearantrieb einsetzbar ist. 10. Transport device according to one of the preceding claims, characterized in that for a 3-axis transfer, the support rails as gripper rails Grippers are formed, wherein a vertical movement can be carried out by means of a lifting mechanism and a transverse movement to the part transport direction can be carried out by means of a closing / opening mechanism, and a linear drive can preferably be used at least for the horizontal movement.
EP05707039A 2004-01-30 2005-01-27 Transport device for workpieces in presses Expired - Lifetime EP1708835B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004005046A DE102004005046B4 (en) 2004-01-30 2004-01-30 Transport device for workpieces in presses
PCT/EP2005/000800 WO2005072888A1 (en) 2004-01-30 2005-01-27 Transport device for workpieces in presses

Publications (2)

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EP1708835A1 true EP1708835A1 (en) 2006-10-11
EP1708835B1 EP1708835B1 (en) 2009-04-22

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US (1) US7448489B2 (en)
EP (1) EP1708835B1 (en)
JP (1) JP5006050B2 (en)
KR (1) KR101110907B1 (en)
CN (1) CN1913987B (en)
CA (1) CA2553656C (en)
DE (2) DE102004005046B4 (en)
ES (1) ES2326325T3 (en)
MX (1) MXPA06008460A (en)
WO (1) WO2005072888A1 (en)

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Also Published As

Publication number Publication date
MXPA06008460A (en) 2007-01-30
JP2007519529A (en) 2007-07-19
DE102004005046B4 (en) 2008-01-24
KR101110907B1 (en) 2012-03-13
CA2553656C (en) 2011-08-30
DE502005007134D1 (en) 2009-06-04
CN1913987B (en) 2010-05-26
US7448489B2 (en) 2008-11-11
JP5006050B2 (en) 2012-08-22
CA2553656A1 (en) 2005-08-11
EP1708835B1 (en) 2009-04-22
ES2326325T3 (en) 2009-10-07
CN1913987A (en) 2007-02-14
KR20060126750A (en) 2006-12-08
DE102004005046A1 (en) 2005-09-01
US20060260381A1 (en) 2006-11-23
WO2005072888A1 (en) 2005-08-11

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