EP1142657B1 - Ejection device, multi-stage press, and method for adjusting the stroke of the ejection device - Google Patents

Ejection device, multi-stage press, and method for adjusting the stroke of the ejection device Download PDF

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Publication number
EP1142657B1
EP1142657B1 EP01108119A EP01108119A EP1142657B1 EP 1142657 B1 EP1142657 B1 EP 1142657B1 EP 01108119 A EP01108119 A EP 01108119A EP 01108119 A EP01108119 A EP 01108119A EP 1142657 B1 EP1142657 B1 EP 1142657B1
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EP
European Patent Office
Prior art keywords
ejector
steering member
lever
set forth
intermediate steering
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EP01108119A
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German (de)
French (fr)
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EP1142657A2 (en
EP1142657A3 (en
Inventor
Alois Weller
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Schumag AG
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Schumag AG
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Priority claimed from DE10032088A external-priority patent/DE10032088A1/en
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Publication of EP1142657A2 publication Critical patent/EP1142657A2/en
Publication of EP1142657A3 publication Critical patent/EP1142657A3/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/08Accessories for handling work or tools
    • B21J13/14Ejecting devices

Definitions

  • the invention relates to an ejector device, in particular for a Multi-stage press, a cold converter and a method for adjusting the lifting height of an ejector device.
  • Present invention is particularly applicable to any type of cold converter, in particular on multi-stage low-pressure converter.
  • Such a cold converter is known for example from EP 0 354 428 A2 known.
  • this workpieces are in a multi-stage process cold formed by placing the respective workpiece from a forming station transported to another and in each of these stations by one Stamp and a corresponding die is reshaped. Depending on the made Forming process, the workpieces must by ejector ejected from the die or from the stamp.
  • an ejector device for ejecting pressed parts from a die of a press from the published patent application DE 24 14 442 A1 known.
  • an ejector lever which drives an ejector pin for ejecting pressed parts, driven by a rocker with a roller by means of an intermediate lever, the connected via a coupling rod with a curve of a drive shaft is.
  • the present invention relates in particular to the field of the die-side Ejector, wherein the matrices the stationary part of the die-stamp assembly form.
  • the invention proposes on the one hand an ejector device, in particular for a cold converter, in which one with a rotating Ejector drive shaft operatively connected ejector lever a Auswerferstössel drives, and in which on the ejector drive shaft a curve is provided along which a cam follower runs, wherein the cam follower drives the ejector lever via an intermediate link and the intermediate link comprises an intermediate link car, which at the cam follower is displaceable along a guide rail.
  • the lifting height and optionally also the periodic movement of the ejector lever be changed in a relatively simple manner. For this, for example, needs the intermediate link only to be relocated.
  • the intermediate link is particularly easy in its movement manageable when the intermediate link an intermediate link lever includes.
  • the intermediate link lever is at a displaceable Intermediate link axle stored, so that by shifting the Intermediate link axle, a displacement of the intermediate link or the intermediate link lever immediately the leverage between cam follower, Intermediate link and ejector lever influenced.
  • the intermediate link may comprise an intermediate link car, which along at least one guide track on the Ejector lever is displaced.
  • This shift can on the one hand to Adjusting the lifting height or other changes of the movement sequence be used of the ejector lever.
  • this shift can between intermediate link and cam follower or between intermediate link and ejector lever also during the cyclic movement the ejector device, so that in the adjustment of the movement sequence of the ejector lever to the movement of the cam follower a very large variability can be guaranteed.
  • the intermediate link car can force-free along a respective handlebar be relocated when the displacement track with the handlebar matches.
  • the intermediate link car bridges a gap between the ejector and the cam follower, so can a power-free Shifting occurs when this distance along the relocation path the intermediate steering wheel remains constant.
  • the intermediate steering carriage is both along a guide rail the ejector lever as well as along a guide track of the cam follower movable trained.
  • a guide of the intermediate link car on a fixed assembly Realize so that the moving assemblies of the ejector do not need to be burdened with this guide.
  • the freedom of force described above can also be realized thereby in that the ejector device has an adjustment position in which the intermediate link car can be moved without that during the Displacement of the ejector lever is shifted.
  • the intermediate link bridges a space between the ejector lever and the cam follower and is along this gap It is displaceable between an initial position and an end position advantageous when the ejector lever axis at the of the gap opposite side of the initial position and the cam follower axis at the is arranged facing away from the gap side of the end position.
  • the ejector limits this gap from one side and the cam follower this gap from the other side.
  • the two lever arms thus range from different Pages on the intermediate link out. Will now be the intermediate link shifts, one lever arm shortens while the other one shortens Lever extended. A shortening of the lever arm, with which the driving cam follower acts on the intermediate link, requires a Reduction of the amplitude.
  • the ejector lever side End of the ejector ram is adjustable by means of adjusting, a Wälzgetriebe be provided as part of the adjusting.
  • a Wälzgetriebe can drive and output easily from each other separate. In this way, can quickly and safely space for Maintenance work to be created. It goes without saying that such Adjustment means comprising a Wälzgetriebe, regardless of the remaining features of the present invention in an ejector device can be used advantageously.
  • a particularly secure transmission connection can be realized if the Wälzgetriebe a worm gear drives.
  • the ejector device 1 has a rotating drive shaft 2, on which a curve 5 is provided. This curve 5 is followed by a cam follower 6, which is mounted on a cam follower axis 16.
  • the movement of the cam follower 6 is via an intermediate link, which comprises an intermediate link lever 7 and an intermediate link carriage 9, transferred to an ejector 3, which is an ejector ram 4 drives in a conventional manner.
  • This is the ejector lever 3 is pressed by a return spring 17 against the intermediate link, so that he immediately follows his movement.
  • the intermediate link is on shelves 10 and 11 of the ejector lever 3rd or the cam follower 6 along two guide tracks displaced. in this connection Run the handlebars on the surface of the Auswerfhebels. 3 or the cam follower 6.
  • the displacement takes place here in that an axle 8 of the intermediate link lever 7 is mounted in a carriage 18, which can be moved along a guide 19.
  • the Carriage 18 via a transmission 20 with a motor drive 21 operatively connected. It can also be provided a manual drive.
  • the intermediate link is between an initial position and an end position along the handlebars 10 and 11 displaced. Bridged here he a gap between the ejector 3 and the cam follower. In the figure, the intermediate link is near its initial position shown. As can be seen immediately, is the axis 15 of the Auswerferhebels 3 on the side facing away from this gap side of the Starting position, while the axis 16 of the cam follower 6 on the The side facing away from the intermediate space of the end position is located. The cam follower 6 and the ejector 3 thus encompass this gap from different sides, so when relocating the Intermediate link extends one lever while the other shortened, or vice versa.
  • the figure shows the ejector device in the front dead center of the ejector lever 3.
  • This state is also the cam follower. 6 at the highest point of the curve 5.
  • the shelves 11 and 10 of the ejector lever 3 or the cam follower 6 are designed such that in this position both run parallel to each other. In this way the intermediate link can force-free between the shelves 10 and 11th be relocated. Moreover, it is ensured in such an arrangement, that the front dead center always remains in the same position.
  • the ejector device 1 also has a counter-stop 12 for the ejector ram 4 on.
  • This counter-stop 12 is by a the counter-stop 12 attached screw adjustable.
  • This screw is connected to a gear 13, which with its sprocket in a Toothed roller 14 engages, thus by means of a motor drive 22 serves as adjusting means for the counter-stop 12.
  • the roller 14 and the motor drive 22 are connected to a lever 23 along a guide 24th pivotally mounted so that they can quickly turn into one for maintenance Maintenance position can be pivoted.

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

Abstract

The ejection device (1), particularly for a cold re-shaping unit, has a thruster (4) activated by an ejection lever (3) connected to a rotating drive shaft (2). On the drive shaft a curve (5) is provided along which a cam follower runs (6). The cam follower drives the ejection lever via an intermediate link component, which is also a lever (7). The intermediate link component also incorporates a carriage (9), which along at least one track (10,11) is locatable on the cam follower or on the ejection lever.

Description

Die Erfindung betrifft eine Auswerfereinrichtung, insbesondere für eine Mehrstufenpresse, einen Kaltumformer sowie ein Verfahren zum Verstellen der Hubhöhe einer Auswerfereinrichtung. Vorliegende Erfindung ist insbesondere anwendbar auf jegliche Art von Kaltumformer, insbesondere auf Mehrstufenkaltumformer.The invention relates to an ejector device, in particular for a Multi-stage press, a cold converter and a method for adjusting the lifting height of an ejector device. Present invention is particularly applicable to any type of cold converter, in particular on multi-stage low-pressure converter.

Ein derartiger Kaltumformer ist beispielsweise aus der EP 0 354 428 A2 bekannt. Bei diesem werden Werkstücke in einem mehrstufigen Prozess kalt umgeformt, indem das jeweilige Werkstück von einer Umformstation zu einer anderen transportiert und in diesen Stationen jeweils von einem Stempel und einer entsprechenden Matrize umgeformt wird. Je nach vorgenommenem Umformprozess müssen die Werkstücke durch Auswerfer aus der Matrize bzw. aus dem Stempel ausgeworfen werden. Such a cold converter is known for example from EP 0 354 428 A2 known. In this workpieces are in a multi-stage process cold formed by placing the respective workpiece from a forming station transported to another and in each of these stations by one Stamp and a corresponding die is reshaped. Depending on the made Forming process, the workpieces must by ejector ejected from the die or from the stamp.

Darüber hinaus ist eine Auswerfereinrichtung zum Auswerfen von Pressteilen aus einer Matrize einer Presse aus der Offenlegungsschrift DE 24 14 442 A1 bekannt. Bei dieser Auswerfereinrichtung wird ein Auswerferhebel, der einen Auswerfbolzen zum Auswerfen von Pressteilen ansteuert, über eine Schwinge mit einer Rolle mittels eines Zwischenhebels angetrieben, der über eine Koppelstange mit einer Kurve einer Antriebswelle verbunden ist.In addition, an ejector device for ejecting pressed parts from a die of a press from the published patent application DE 24 14 442 A1 known. In this ejector device, an ejector lever, which drives an ejector pin for ejecting pressed parts, driven by a rocker with a roller by means of an intermediate lever, the connected via a coupling rod with a curve of a drive shaft is.

Aus der Patentschrift US 3,820,376 ist ein Pressenauswerfmechanismus bekannt, bei welchem eine drehbar gelagerte Wippe einer Kurve einer Antriebswelle nachläuft. Die Wippe korrespondiert über eine Rolle mit einem Auswerferhebel, der einen Auswerferstössel antreibt.From the patent US 3,820,376 is a press ejection mechanism in which a rotatably mounted rocker of a curve of a drive shaft lags. The rocker corresponds to a roll with a Ejector lever that drives an ejector plunger.

Des Weiteren ist aus der Auslegeschrift DE 1 215 479 B1 eine Auswerfereinrichtung für Bolzen aus einer Matrize einer Bolzenpresse bekannt. Bei dieser Auswerfereinrichtung ist ein Auswerferhebel an einem seiner Enden drehbar an einem ortsfesten Zapfen gelagert, wobei der Auswerferhebel an seinem anderen Ende ballig ausgeformt ist und mit dem ballig ausgeformten Ende mit einem Auswerferstift korrespondiert. Angetrieben wird der Auswerferhebel mittels eines Zwischenhebels, der über eine Kurve einer Antriebswelle angetrieben ist. Der Zwischenhebel wirkt direkt auf einen Rückenbereich des Auswerferhebels und bewegt diesen periodisch gegen den Auswerferstift. Furthermore, from Auslegeschrift DE 1 215 479 B1 an ejector device for bolts from a die of a bolt press known. at this ejector device is an ejector lever at one of its ends rotatably mounted on a stationary pin, wherein the ejector lever on its other end is crowned and shaped with the convex End corresponds to an ejector pin. Is driven the Ejector lever by means of an intermediate lever, the over a curve of a Drive shaft is driven. The intermediate lever acts directly on one Back area of the ejector lever and moves it periodically against the ejector pin.

Die vorliegende Erfindung betrifft insbesondere das Gebiet der matrizenseitigen Auswerfer, wobei die Matrizen den stillstehenden Teil der Matrizen-Stempel-Anordnung bilden.The present The invention relates in particular to the field of the die-side Ejector, wherein the matrices the stationary part of the die-stamp assembly form.

Es ist Aufgabe vorliegender Erfindung, eine Auswerfereinrichtung, einen Kaltumformer sowie ein Verfahren zum Verstellen der Hubhöhe einer Auswerfereinrichtung vorzusehen, bei welchem die Hubhöhe auf baulich einfache Weise verstellt werden kann. It is an object of the present invention, an ejector, a Cold converter and a method for adjusting the lifting height of a To provide ejector device, in which the lifting height to constructional easy way can be adjusted.

Als Lösung schlägt die Erfindung einerseits eine Auswerfereinrichtung, insbesondere für einen Kaltumformer, vor, bei welcher ein mit einer rotierenden Auswerferantriebswelle wirkverbundener Auswerferhebel einen Auswerferstössel antreibt, und bei welcher auf der Auswerferantriebswelle eine Kurve vorgesehen ist, entlang welcher ein Nockenfolger läuft, wobei der Nockenfolger über einen Zwischenlenker den Auswerferhebel antreibt und der Zwischenlenker einen Zwischenlenkerwagen umfasst, welcher an dem Nockenfolger entlang einer Lenkerbahn verlagerbar ist. As a solution, the invention proposes on the one hand an ejector device, in particular for a cold converter, in which one with a rotating Ejector drive shaft operatively connected ejector lever a Auswerferstössel drives, and in which on the ejector drive shaft a curve is provided along which a cam follower runs, wherein the cam follower drives the ejector lever via an intermediate link and the intermediate link comprises an intermediate link car, which at the cam follower is displaceable along a guide rail.

Durch Veränderung des Zwischenlenkers kann die Hubhöhe sowie gegebenenfalls auch der periodische Bewegungsablauf des Auswerferhebels auf verhältnismäßig einfache Weise verändert werden. Hierzu braucht beispielsweise der Zwischenlenker lediglich verlagert zu werden.By changing the intermediate link, the lifting height and optionally also the periodic movement of the ejector lever be changed in a relatively simple manner. For this, for example, needs the intermediate link only to be relocated.

Der Zwischenlenker gestaltet sich besonders einfach in seinem Bewegungsablauf beherrschbar, wenn der Zwischenlenker einen Zwischenlenkerhebel umfasst. Vorzugsweise ist der Zwischenlenkerhebel an einer verlagerbaren Zwischenlenkerachse gelagert, so dass durch ein Verlagern der Zwischenlenkerachse ein Verlagern des Zwischenlenkers beziehungsweise des Zwischenlenkerhebels unmittelbar die Hebelwirkung zwischen Nockenfolger, Zwischenlenker und Auswerferhebel beeinflusst.The intermediate link is particularly easy in its movement manageable when the intermediate link an intermediate link lever includes. Preferably, the intermediate link lever is at a displaceable Intermediate link axle stored, so that by shifting the Intermediate link axle, a displacement of the intermediate link or the intermediate link lever immediately the leverage between cam follower, Intermediate link and ejector lever influenced.

Der Zwischenlenker kann einen Zwischenlenkerwagen umfassen, welcher entlang wenigstens einer Lenkerbahn an dem Auswerferhebel verlagerbar ist. Diese Verlagerung kann einerseits zum Einstellen der Hubhöhe oder sonstiger Veränderungen des Bewegungsablaufes des Auswerferhebels genutzt werden. Andererseits kann diese Verlagerung zwischen Zwischenlenker und Nockenfolger bzw. zwischen Zwischenlenker und Auswerferhebel auch während der zyklischen Bewegung der Auswerfereinrichtung erfolgen, so dass in der Anpassung des Bewegungsablaufes des Auswerferhebels an den Bewegungsablauf des Nockenfolgers eine sehr große Variabilität gewährleistet werden kann.The intermediate link may comprise an intermediate link car, which along at least one guide track on the Ejector lever is displaced. This shift can on the one hand to Adjusting the lifting height or other changes of the movement sequence be used of the ejector lever. On the other hand, this shift can between intermediate link and cam follower or between intermediate link and ejector lever also during the cyclic movement the ejector device, so that in the adjustment of the movement sequence of the ejector lever to the movement of the cam follower a very large variability can be guaranteed.

Der Zwischenlenkerwagen kann kraftfrei entlang einer jeweiligen Lenkerbahn verlagert werden, wenn die Verlagerungsbahn mit der Lenkerbahn übereinstimmt. Überbrückt der Zwischenlenkerwagen einen Abstand zwischen dem Auswerferhebel und dem Nockenfolger, so kann eine kraftfreie Verlagerung erfolgen, wenn dieser Abstand entlang der Verlagerungsbahn des Zwischenlenkerwagens konstant bleibt. Durch eine derartige Anordnung können die Kräfte, die zum Verlagern des Zwischenlenkerwagens erforderlich sind, minimiert werden.The intermediate link car can force-free along a respective handlebar be relocated when the displacement track with the handlebar matches. The intermediate link car bridges a gap between the ejector and the cam follower, so can a power-free Shifting occurs when this distance along the relocation path the intermediate steering wheel remains constant. By such an arrangement can use the forces needed to move the intermediate steering wheel are required to be minimized.

Vorzugsweise wird der Zwischenlenkerwagen sowohl entlang einer Lenkerbahn des Auswerferhebels als auch entlang einer Lenkerbahn des Nockenfolgers verlagerbar ausgebildet. Bei einer derartigen Anordnung lässt sich eine Führung des Zwischenlenkerwagens an einer festen Baugruppe realisieren, so dass die beweglichen Baugruppen der Auswerfereinrichtung nicht mit dieser Führung belastet werden brauchen.Preferably, the intermediate steering carriage is both along a guide rail the ejector lever as well as along a guide track of the cam follower movable trained. In such an arrangement leaves a guide of the intermediate link car on a fixed assembly Realize so that the moving assemblies of the ejector do not need to be burdened with this guide.

Die oben beschriebene Kraftfreiheit lässt sich auch dadurch realisieren, dass die Auswerfereinrichtung eine Verstellposition aufweist, in welcher der Zwischenlenkerwagen verlagert werden kann, ohne das während der Verlagerung der Auswerferhebel verlagert wird. Vorzugsweise liegt die Verstellposition im vorderen Todpunkt des Auswerferhebels beziehungsweise der Auswerfereinrichtung, so dass bei einer Verstellung des Bewegungsablaufes des Auswerferhebels dieser vordere Todpunkt beibehalten wird.The freedom of force described above can also be realized thereby in that the ejector device has an adjustment position in which the intermediate link car can be moved without that during the Displacement of the ejector lever is shifted. Preferably, the Adjustment position in the front dead center of the ejector lever or the ejector device, so that in an adjustment of the movement sequence the ejector lever this front dead center maintained becomes.

Überbrückt der Zwischenlenker einen Zwischenraum zwischen dem Auswerferhebel und dem Nockenfolger und ist entlang dieses Zwischenraums zwischen einer Anfangsposition und einer Endposition verlagerbar, ist es vorteilhaft, wenn die Auswerferhebelachse an der von dem Zwischenraum abgewandten Seite der Anfangsposition und die Nockenfolgerachse an der von dem Zwischenraum abgewandten Seite der Endposition angeordnet ist. Durch eine derartige Anordnung begrenzt der Auswerferhebel diesen Zwischenraum von der einen Seite und der Nockenfolger diesen Zwischenraum von der anderen Seite. Die beiden Hebelarme reichen somit von verschiedenen Seiten auf den Zwischenlenker hin. Wird nun der Zwischenlenker verlagert, so verkürzt sich der eine Hebelarm, während sich der andere Hebelarm verlängert. Eine Verkürzung des Hebelarms, mit welchem der antreibende Nockenfolger auf den Zwischenlenker wirkt, bedingt eine Verringerung der Amplitude. Wird der Hebelarm vergrößert, mit welchem der Zwischenlenker die von dem Nockenfolger ihm aufgezwungene Bewegung an den Auswerferhebel überträgt, verlängert, so verringert sich diese Amplitude ebenfalls. Bei dieser Anordnung wirkt somit das Verlagern des Zwischenlenkers in Richtung auf einen kürzeren Hebelarm des Nockenfolgers beziehungsweise einen längeren Hebelarm des Auswerferhebels zweifach amplitudenvermindernd, während eine Verlagerung bei einer entgegengesetzten Verlagerung zweifach amplitudenverstärkend wirkt. Die Verlagerung des Zwischenlenkers ist somit wesentlich effektiver als bei gleichgerichteten Hebelanordnungen.The intermediate link bridges a space between the ejector lever and the cam follower and is along this gap It is displaceable between an initial position and an end position advantageous when the ejector lever axis at the of the gap opposite side of the initial position and the cam follower axis at the is arranged facing away from the gap side of the end position. By such an arrangement, the ejector limits this gap from one side and the cam follower this gap from the other side. The two lever arms thus range from different Pages on the intermediate link out. Will now be the intermediate link shifts, one lever arm shortens while the other one shortens Lever extended. A shortening of the lever arm, with which the driving cam follower acts on the intermediate link, requires a Reduction of the amplitude. If the lever arm is increased, with which the intermediate link the motion imposed on it by the cam follower transmits to the ejector, extended, so this decreases Amplitude as well. In this arrangement, therefore, the displacement of the acts Intermediate link in the direction of a shorter lever arm of the cam follower or a longer lever arm of the ejector lever twice decreasing the amplitude while shifting at an opposite Displacement has a twofold amplification effect. Relocation the intermediate link is thus much more effective than at rectified lever arrangements.

Um die Wartung der Auswerfereinrichtung zu erleichtern, kann bei einer Auswerfereinrichtung, bei welcher der Auswerferstößel mit einem verstellbaren Gegenanschlag wechselwirkt, der am auswerferhebelseitigen Ende des Auswerferstößels mittels Justiermittel justierbar ist, ein Wälzgetriebe als Bestandteil der Justiermittel vorgesehen sein. Bei einem derartigen Wälzgetriebe lassen sich Antrieb und Abtrieb ohne weiteres voneinander trennen. Auf diese Weise kann schnell und betriebssicher Raum für Wartungsarbeiten geschaffen werden. Es versteht sich hierbei, dass derartige Justiermittel, die ein Wälzgetriebe umfassen, auch unabhängig von den übrigen Merkmalen vorliegender Erfindung bei einer Auswerfereinrichtung vorteilhaft einsetzbar sind.To facilitate the maintenance of the ejector device, can at a Ejector device, wherein the ejector ram with an adjustable Counter-attack interacts, the ejector lever side End of the ejector ram is adjustable by means of adjusting, a Wälzgetriebe be provided as part of the adjusting. In such a Wälzgetriebe can drive and output easily from each other separate. In this way, can quickly and safely space for Maintenance work to be created. It goes without saying that such Adjustment means comprising a Wälzgetriebe, regardless of the remaining features of the present invention in an ejector device can be used advantageously.

Eine besonders sichere Getriebeverbindung lässt sich realisieren, wenn das Wälzgetriebe ein Schraubengetriebe antreibt.A particularly secure transmission connection can be realized if the Wälzgetriebe a worm gear drives.

Um ein einfaches und betriebssicheres Repositionieren des Antriebs zu gewährleisten, kann der Antrieb des Wälzgetriebes von einer Betriebsposition in eine Wartungsposition schwenkbar ausgebildet sein. To a simple and reliable repositioning of the drive to ensure the drive of the Wälzgetriebes from an operating position be formed pivotable in a maintenance position.

Weitere Vorteile, Ziele und Eigenschaften vorliegender Erfindung werden anhand der Beschreibung anliegender Zeichnung erläutert, in welcher beispielhaft eine Auswerfereinrichtung für einen Kaltumformer in schematischer Schnittansicht dargestellt ist.Further advantages, objects and features of the present invention will be explained on the basis of the description of the attached drawing, in which by way of example an ejector device for a cold converter in a schematic Section view is shown.

Die Auswerfereinrichtung 1 weist eine rotierende Antriebswelle 2 auf, an welcher eine Kurve 5 vorgesehen ist. Dieser Kurve 5 folgt ein Nockenfolger 6, der an einer Nockenfolgerachse 16 gelagert ist.The ejector device 1 has a rotating drive shaft 2, on which a curve 5 is provided. This curve 5 is followed by a cam follower 6, which is mounted on a cam follower axis 16.

Die Bewegung des Nockenfolgers 6 wird über einen Zwischenlenker, welcher einen Zwischenlenkerhebel 7 und einen Zwischenlenkerwagen 9 umfasst, auf einen Auswerferhebel 3 übertragen, welcher einen Auswerferstößel 4 in an sich bekannter Weise antreibt. Hierbei wird der Auswerferhebel 3 durch eine Rückholfeder 17 gegen den Zwischenlenker gedrückt, so dass er unmittelbar dessen Bewegung folgt.The movement of the cam follower 6 is via an intermediate link, which comprises an intermediate link lever 7 and an intermediate link carriage 9, transferred to an ejector 3, which is an ejector ram 4 drives in a conventional manner. This is the ejector lever 3 is pressed by a return spring 17 against the intermediate link, so that he immediately follows his movement.

Der Zwischenlenker ist an Stellflächen 10 bzw. 11 des Auswerferhebels 3 bzw. des Nockenfolgers 6 entlang zweier Lenkerbahnen verlagerbar. Hierbei verlaufe die Lenkerbahnen auf der Oberfläche des Auswerfhebels 3 bzw. des Nockenfolgers 6. Die Verlagerung erfolgt hierbei dadurch, dass eine Achse 8 des Zwischenlenkerhebels 7 in einem Schlitten 18 gelagert ist, welcher entlang einer Führung 19 verschoben werden kann. Hierzu ist der Schlitten 18 über ein Getriebe 20 mit einem motorischen Antrieb 21 wirkverbunden. Es kann auch ein manueller Antrieb vorgesehen sein. The intermediate link is on shelves 10 and 11 of the ejector lever 3rd or the cam follower 6 along two guide tracks displaced. in this connection Run the handlebars on the surface of the Auswerfhebels. 3 or the cam follower 6. The displacement takes place here in that an axle 8 of the intermediate link lever 7 is mounted in a carriage 18, which can be moved along a guide 19. For this is the Carriage 18 via a transmission 20 with a motor drive 21 operatively connected. It can also be provided a manual drive.

Wie unmittelbar ersichtlich, verlagert sich der Zwischenlenkerwagen 9 sowohl bei einer Verlagerung des Schlittens 18 als auch bei der durch die Antriebswelle 2 bedingten Auswerferbewegungen entlang der Lenkerbahnen 10 und 11.As can be seen immediately, the intermediate link 9 moves both with a displacement of the carriage 18 as well as by the Drive shaft 2 conditional Auswerferbewegungen along the handlebars 10 and 11.

Der Zwischenlenker ist zwischen einer Anfangsposition und einer Endposition entlang der Lenkerbahnen 10 und 11 verlagerbar. Hierbei überbrückt er einen Zwischenraum zwischen dem Auswerferhebel 3 und dem Nockenfolger. In der Figur ist der Zwischenlenker nahe seiner Anfangsposition dargestellt. Wie unmittelbar ersichtlich, befindet sich die Achse 15 des Auswerferhebels 3 an der von diesem Zwischenraum abgewandten Seite der Anfangsposition, während sich die Achse 16 des Nockenfolgers 6 auf der dem Zwischenraum abgewandten Seite der Endposition befindet. Der Nockenfolger 6 sowie der Auswerferhebel 3 umgreifen somit diesen Zwischenraum von verschiedenen Seiten, so dass bei einer Verlagerung des Zwischenlenkers sich der eine Hebel verlängert, während sich der andere verkürzt, beziehungsweise umgekehrt. Wie unmittelbar ersichtlich bedingt eine Position des Zwischenlenkers in der Nähe seiner Anfangsposition eine sehr hohe Amplitudenübertragung der Bewegung des Nockenfolgers 6 auf den Zwischenlenkerwagen 9. Darüber hinaus bedingt der in der Anfangsposition kurze Hebel, mit welchem der Zwischenlenkerwagen 9 an dem Auswerferhebel 3 angreift, dass die Bewegung des Zwischenlenkerwagens 9 mit sehr großer Amplitude auf den Auswerferhebel 3 übertragen wird. The intermediate link is between an initial position and an end position along the handlebars 10 and 11 displaced. Bridged here he a gap between the ejector 3 and the cam follower. In the figure, the intermediate link is near its initial position shown. As can be seen immediately, is the axis 15 of the Auswerferhebels 3 on the side facing away from this gap side of the Starting position, while the axis 16 of the cam follower 6 on the The side facing away from the intermediate space of the end position is located. The cam follower 6 and the ejector 3 thus encompass this gap from different sides, so when relocating the Intermediate link extends one lever while the other shortened, or vice versa. As immediately apparent conditional a position of the intermediate link near its initial position very high amplitude transmission of the movement of the cam follower 6 the intermediate link car 9. In addition, due to the in the initial position short lever, with which the intermediate link carriage 9 on the Ejector lever 3 attacks that the movement of the intermediate link car 9 is transmitted to the ejector 3 with a very large amplitude.

In der Endposition des Zwischenlenkerwagens 9, nimmt dieser lediglich eine sehr geringe Amplitude des Nockenfolgers 6 auf. Ebenso werden, wie unmittelbar ersichtlich, die Bewegungen des Zwischenlenkerwagens 9 in seiner Endposition in geringem Maße von dem Auswerferhebel 3 aufgegriffen.In the final position of the intermediate handlebar carriage 9, this takes only a very small amplitude of the cam follower 6. Likewise, like Immediately apparent, the movements of the intermediate handlebar carriage 9 in its end position is taken up to a small extent by the ejector lever 3.

Die Figur zeigt die Auswerfereinrichtung im vorderen Totpunkt des Auswerferhebels 3. In diesem Zustand befindet sich auch der Nockenfolger 6 am höchsten Punkt der Kurve 5. Die Stellflächen 11 und 10 des Auswerferhebel 3 beziehungsweise des Nockenfolgers 6 sind derart ausgestaltet, dass in dieser Position beide parallel zueinander verlaufen. Auf diese Weise kann der Zwischenlenker kraftfrei zwischen den Stellflächen 10 und 11 verlagert werden. Darüber hinaus ist bei einer derartigen Anordnung gewährleistet, dass der vordere Totpunkt stets an der selben Position bleibt.The figure shows the ejector device in the front dead center of the ejector lever 3. In this state is also the cam follower. 6 at the highest point of the curve 5. The shelves 11 and 10 of the ejector lever 3 or the cam follower 6 are designed such that in this position both run parallel to each other. In this way the intermediate link can force-free between the shelves 10 and 11th be relocated. Moreover, it is ensured in such an arrangement, that the front dead center always remains in the same position.

Die Auswerfereinrichtung 1 weist darüber hinaus einen Gegenanschlag 12 für den Auswerferstößel 4 auf. Dieser Gegenanschlag 12 ist durch eine an dem Gegenanschlag 12 angebrachte Schraube justierbar. Diese Schraube ist mit einem Zahnrad 13 verbunden, welches mit seinem Zahnkranz in eine Zahnwalze 14 eingreift, die mittels eines motorischen Antriebs 22 somit als Justiermittel für den Gegenanschlag 12 dient. Die Walze 14 und der motorische Antrieb 22 sind an einem Hebel 23 entlang einer Führung 24 schwenkbar gelagert, so dass diese für Wartungsarbeiten schnell in eine Wartungsposition verschwenkt werden können.The ejector device 1 also has a counter-stop 12 for the ejector ram 4 on. This counter-stop 12 is by a the counter-stop 12 attached screw adjustable. This screw is connected to a gear 13, which with its sprocket in a Toothed roller 14 engages, thus by means of a motor drive 22 serves as adjusting means for the counter-stop 12. The roller 14 and the motor drive 22 are connected to a lever 23 along a guide 24th pivotally mounted so that they can quickly turn into one for maintenance Maintenance position can be pivoted.

Claims (15)

  1. An ejector system (1), more specifically for a cold former, in which an ejector lever (3), which is operably connected to a rotating ejector drive shaft (2), drives an ejector ram (4) and in which there is provided on said ejector drive shaft (2) a curve (5) along which travels a cam follower (6), said cam follower (6) driving said ejector lever (3) via an intermediate steering member, characterized in that said intermediate steering member includes an intermediate steering member carriage (9) that is displaceable on said cam follower (6) along a steering member path (11).
  2. The ejector system (1) as set forth in claim 1, characterized in that the intermediate steering member includes an intermediate steering member lever (7).
  3. The ejector system (1) as set forth in claim 2, characterized in that the intermediate steering member lever (7) is carried on a displaceable intermediate steering member axis (8).
  4. The ejector system (1) as set forth in any of the claims 1 through 3, characterized in that the intermediate steering member carriage (9) is displaceable on the ejector lever (3) along at least one steering member path (10).
  5. The ejector system (1) as set forth in claim 4, characterized in that the intermediate steering member carriage (9) is displaceable both along a steering member path (10) of the ejector lever (3) and along a steering member path (11) of the cam follower (6) and that the ejector system (1) comprises an adjustment position in which the distance between the two steering member paths (10, 11) along the displacement path of the intermediate steering member carriage (9) remains constant.
  6. The ejector system (1) as set forth in any of the claims 1 through 5, characterized by an adjustment position in which an intermediate steering member carriage (9) of the intermediate steering member can be displaced without the ejector lever (3) being displaced during displacement thereof.
  7. The ejector system (1) as set forth in claim 5 or 6, characterized in that the adjustment position lies in the front dead center of the ejector lever (3) or of the ejector ram (4).
  8. The ejector system (1) as set forth in any of the claims 1 through 7, characterized in that the intermediate steering member bridges a space between the ejector lever (3) and the cam follower (6) and is displaceable along said space between an initial position and a final position, an ejector lever axis (15) being disposed on the side of the initial position which is turned away from said space and a cam follower axis (16) being disposed on the side of the end position which is turned away from said space.
  9. The ejector system (1) as set forth in any of the claims 1 through 8, characterized in that the ejector ram (4) interacts with an adjustable mating abutment (12) that is adjustable at the end of the ejector ram (4) located on the side of the ejector lever by means of adjusting means, said adjusting means including a rolling gear (13, 14).
  10. The ejector system (1) as set forth in claim 9, characterized in that the rolling gear (13, 14) drives a screw gear.
  11. The ejector system (1) as set forth in claim 9 or 10, characterized in that the rolling gear comprises a driver member (14) and a driven member (13) and that the driver member (14) is adapted to be pivoted away.
  12. A cold former with an ejector system (1) as set forth in any of the claims 1 through 11, said ejector system being preferably located on the side of the die.
  13. A method of adjusting the stroke height of an ejector system (1) as set forth in any of the claims 1 through 11, characterized in that the ejector system (1) is brought into an adjustment position and that the stroke height is adjusted next by adjusting an intermediate steering member (7).
  14. The method as set forth in claim 13, characterized in that the adjustment position is the front dead center of the ejector system (1).
  15. The method as set forth in claim 13 or 14, characterized in that an intermediate steering member axis (8) of an intermediate steering member (7) is displaced for adjusting the stroke height.
EP01108119A 2000-04-03 2001-03-30 Ejection device, multi-stage press, and method for adjusting the stroke of the ejection device Expired - Lifetime EP1142657B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10016266 2000-04-03
DE10016266 2000-04-03
DE10032088 2000-07-01
DE10032088A DE10032088A1 (en) 2000-04-03 2000-07-01 Ejector device, multi-stage press and method for adjusting the lifting height of an ejector device

Publications (3)

Publication Number Publication Date
EP1142657A2 EP1142657A2 (en) 2001-10-10
EP1142657A3 EP1142657A3 (en) 2002-10-02
EP1142657B1 true EP1142657B1 (en) 2005-07-27

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ID=26005140

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Application Number Title Priority Date Filing Date
EP01108119A Expired - Lifetime EP1142657B1 (en) 2000-04-03 2001-03-30 Ejection device, multi-stage press, and method for adjusting the stroke of the ejection device

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EP (1) EP1142657B1 (en)
AT (1) ATE300374T1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102225452B (en) * 2011-03-30 2014-11-19 扬州锻压机床股份有限公司 Hydraulic-pneumatic jacking device
CN106914579A (en) * 2017-04-25 2017-07-04 全南县智护力工业产品设计有限公司 A kind of industrial Lifting Device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171144A (en) * 1962-08-22 1965-03-02 Nat Machinery Co Knockout drive assembly
DE1215479B (en) * 1963-06-12 1966-04-28 Hilgeland Maschf Gebr Ejector device for bolts from the die of a bolt press
US3820376A (en) * 1972-08-18 1974-06-28 Peltzer & Ehlers Variable stroke ejector mechanism
DE2414442A1 (en) * 1974-03-26 1975-12-18 Peltzer & Ehlers Pressing ejector mechanism from die - has adjustable actuator on swing arm between two levers

Also Published As

Publication number Publication date
EP1142657A2 (en) 2001-10-10
ATE300374T1 (en) 2005-08-15
EP1142657A3 (en) 2002-10-02

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