EP0895934A1 - Lifting device for a working station of a packaging machine - Google Patents

Lifting device for a working station of a packaging machine Download PDF

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Publication number
EP0895934A1
EP0895934A1 EP98113904A EP98113904A EP0895934A1 EP 0895934 A1 EP0895934 A1 EP 0895934A1 EP 98113904 A EP98113904 A EP 98113904A EP 98113904 A EP98113904 A EP 98113904A EP 0895934 A1 EP0895934 A1 EP 0895934A1
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EP
European Patent Office
Prior art keywords
tool part
lifting device
tool
lifting
packaging machine
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
EP98113904A
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German (de)
French (fr)
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EP0895934B1 (en
Inventor
Johann Natterer
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Multivac Sepp Haggenmueller GmbH and Co KG
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Multivac Sepp Haggenmueller GmbH and Co KG
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Publication of EP0895934A1 publication Critical patent/EP0895934A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/021—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas the containers or wrappers being interconnected
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B65/00—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
    • B65B65/02—Driving gear

Definitions

  • the invention relates to a lifting device for a work station a packaging machine according to the preamble of the claim 1.
  • a packaging machine has work stations for different ones Functions such as shaping, filling, sealing and cutting on.
  • a work station comprises a lower tool part in a known manner and a tool upper part, which is in working position hold a packing lane between them for the operation.
  • the upper part of the tool is usually stationary trained and the tool base relative to a hoist movable up and down to the upper part of the tool. After in the a work cycle is carried out at the respective work station the lower part is lowered and the Packing lane so that the processed packs leave the work station led out and fed to the next workstation can be.
  • the packaging machine a machine frame 1 and successively arranged a molding station 2, an evacuation and sealing station 3 and one Cutting device 4 on.
  • a Foil web 5 inserted into the machine from the input side.
  • Containers 6 are formed from the film web in the forming station. After filling, these are not shown in a figure Filling station in an evacuation and sealing station 3 sealed with a top film and finally by means of the cutting device 4 separated from each other.
  • the machine frame At the same time, 1 does not deny leadership for one shown chain drive for conveying the film web 5 or packaging container 6 formed therefrom.
  • FIGS. 2 to 5 points a workstation, which is exemplary here as an evacuation and Sealing station 3 is shown, a base part 7, one with this rigidly connected tool upper part 8 and a relative to this movable tool lower part 9.
  • the base part 7 and the tool upper part 8 of the work station are on guide rods 10 connected together.
  • the Lifting device has two with one another via a yoke 11 connected piston-cylinder devices 12.
  • the cylinders 13 each piston-cylinder device 12 are each with the Base part 7 connected, while the piston rods 14 each with are connected to the yoke 11, which in turn is the lower tool part 9 wears.
  • the yoke 11 and the associated with it Lower tool part 9 is also on the guide rods 10 sliding guide bushings 15 connected.
  • the piston-cylinder devices 12 are designed so that they the lower tool part 9 in a first closing movement a large stroke distance in a size up to over 200mm from the open position to the closed position and vice versa can move.
  • FIGS. 2 and 4 points the work station 3 on each of its two long sides Lever system 20 between the movable lower tool part 9 and the machine frame 1.
  • Figures 3 and 5 show one Longitudinal view of the work station 3, in which the structure and the Effect of the lever system 20 is best seen.
  • the lever system 20 has two two-armed levers 21a, 21b. Of the The pivot point 22a, 22b of the levers 21a, 21b is in each case one Connecting rod 26a, 26b at a point 27a, 27b of the Machine frame 1 articulated, the connecting rods 26a, 26b are rotatably supported at the articulation points 27a, 27b. The an outer end of the levers 21a, 21b is each over a Rotary connection 23a, 23b rotatably connected to the base part 7.
  • the other outer end of the levers 21a, 21b is in each case one Connecting rod 24a, 24b connected to the yoke 11, wherein both the articulation points 25a, 25b of the rods on the yoke 11 as well the pivot points 28a, 28b of the rods on the lever are rotatable are executed.
  • the lengths of the levers and connecting rods are dependent on the geometry of the workstation and in particular of the stroke with which the lower tool part 9 against Tool upper part 8 is moved and depending on the desired stroke distance around the entire lifting device should be raised when the lower tool part 9 in the open Position is selected.
  • the operation of the lifting device according to the invention is like follows.
  • the workstation is located in before a work step the open position shown in Figures 2 and 3, in the the upper tool part 8 and the lower tool part 9 a distance from each other.
  • the piston-cylinder devices 12 activated, the Tool lower part 9 a first closing path with a stroke of up to over 200mm against the tool upper part 8. Since that Base part 7 and the upper tool part 8 rigid with each other are connected and the piston cylinder devices 12 the Lower tool part 9 vertically relative to the base part 7 move up, the lower tool part 9 moves to the Tool upper part 8 until the two tool parts 8, 9 in the closed position of the workstation shown in FIGS and 5 is shown to cooperate. In this position the lower edge of the upper part of the tool on the film web 5.
  • the lower tool part 9 moved back to the open position according to Figures 2 and 3.
  • the connecting rods transmit the position of the workstation 24a, 24b the downward movement of the lower tool part 9 and the associated yoke 11 on each ends of the levers connected to the connecting rods 24a, 24b 21a, 21b, whereby the levers 21a, 21b each about their pivot point 22a, 22b can be rotated.
  • the lifting device additionally has a power stroke element to the piston-cylinder devices 12 30 on which to generate a high closing force between the lower tool part 9 and the upper tool part 8 serves to the active forces during the operation in the closed position to be able to pick up the workstation.
  • the force generation is after the first closing movement of the Lower tool part 9 against the upper tool part 8 by means of Piston-cylinder devices 12 via a second of that Power stroke element 30 generates a closing movement with a relative to the first closing movement produces a small stroke.
  • the Power stroke element 30 has a drive and a mechanical Force transmission device, which is designed such that it has an almost constant force curve, with Resistance occurs the force for the second Closing movement is generated.

Abstract

The lifting mechanism for a work-station, at a packaging machine, has an additional lifting system (20) coupled to the second tool section (9). When the second tool section (9) is lowered into the bottom position, the first tool section (8) is moved away from the material movement path (5). The second lifting unit (20) is a lever system.

Description

Die Erfindung betrifft eine Hubeinrichtung für eine Arbeitsstation einer Verpackungsmachine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a lifting device for a work station a packaging machine according to the preamble of the claim 1.

Eine Verpackungsmaschine weist Arbeitsstationen für verschiedene Funktionen, wie Formen, Füllen, Siegeln und Schneiden auf. Eine Arbeitsstation umfaßt in bekannter Weise ein Werkzeugunterteil und ein Werkzeugoberteil, die in Arbeitsstellung zwischen sich eine Packungsbahn für den Arbeitsgang festhalten. Üblicherweise ist dabei das Werkzeugoberteil feststehend ausgebildet und das Werkzeugunterteil über ein Hubwerk relativ zu dem Werkzeugoberteil auf und ab bewegbar. Nachdem in der jeweiligen Arbeitsstation ein Arbeitsgang ausgeführt ist, wird das Unterteil abgesenkt und es erfolgt ein Vorschub der Packungsbahn, so daß die bearbeiteten Packungen aus der Arbeitsstation herausgeführt und der nächsten Arbeitsstation zugeführt werden können. A packaging machine has work stations for different ones Functions such as shaping, filling, sealing and cutting on. A work station comprises a lower tool part in a known manner and a tool upper part, which is in working position hold a packing lane between them for the operation. The upper part of the tool is usually stationary trained and the tool base relative to a hoist movable up and down to the upper part of the tool. After in the a work cycle is carried out at the respective work station the lower part is lowered and the Packing lane so that the processed packs leave the work station led out and fed to the next workstation can be.

Solange die zu befördernden Packungen nur eine Ausdehnung in Richtung des Werkzeugunterteiles aufweisen, beispielsweise Becher, die nach dem Befüllen mit einem Produkt lediglich mit einer Oberfolie verschlossen werden, stellt der Transport von einer Station in die nächste Station kein Problem dar. Wenn aber die Packungen auch eine Ausdehnung nach oben in Richtung des Werkzeugoberteiles aufweisen, beispielsweise wenn ein eingefülltes Produkt über die Ebene der Materialbahn hinausragt, können solche Packungen nicht mehr in einfacher Weise in die nächste Arbeitsstation eingeführt werden.As long as the packs to be transported only extend into Have direction of the lower part of the tool, for example a cup, that after filling with a product only with are sealed with a top film, the transport of one station to the next station is not a problem. But if the packs also extend upward towards the Have upper part of the tool, for example when a filled Product protrudes beyond the level of the material web, such packs can no longer easily be placed in the next workstation will be introduced.

Es ist daher Aufgabe der Erfindung, eine Hubeinrichtung für eine Arbeitsstation einer Verpackungsmaschine zu schaffen, die es ermöglicht, daß beliebig geformte Verpackungen in einfacher Weise in eine Arbeitsstation ein- und ausgeführt werden können.It is therefore an object of the invention to provide a lifting device for a Workstation of a packaging machine to create it Allows any shape of packaging to be made easier Way in and out of a workstation.

Die Aufgabe wird gelöst durch eine Hubeinrichtung nach dem Patentanspruch 1. Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.The object is achieved by a lifting device according to the claim 1. Further developments of the invention are in the subclaims specified.

Weitere Merkmale und Zweckmäßigkeiten der Erfindung ergeben sich aus der Beschreibung eines Ausführungsbeispieles anhand der Figuren. Von den Figuren zeigen:

Fig. 1
eine Seitenansicht einer Verpackungsmaschine mit weggelassener Seitenabdeckung,
Fig. 2
eine Längsansicht einer Arbeitsstation in Transportrichtung der Verpackungen gesehen im geöffneten Zustand,
Fig. 3
eine Seitenansicht der Arbeitsstation von Fig. 2 in einer Richtung senkrecht zur Transportrichtung der Verpackungen,
Fig. 4
eine Längsansicht in Transportrichtung der Arbeitsstation nach Fig. 2 in geschlossenem Zustand,
Fig. 5
eine Seitenansicht der Arbeitsstation nach Fig. 4 senkrecht zur Transportrichtung.
Further features and advantages of the invention result from the description of an embodiment with reference to the figures. From the figures show:
Fig. 1
a side view of a packaging machine with the side cover omitted,
Fig. 2
a longitudinal view of a work station seen in the transport direction of the packaging in the open state,
Fig. 3
2 shows a side view of the work station of FIG. 2 in a direction perpendicular to the transport direction of the packages,
Fig. 4
3 shows a longitudinal view in the transport direction of the work station according to FIG. 2 in the closed state,
Fig. 5
a side view of the workstation of FIG. 4 perpendicular to the direction of transport.

Wie aus Fig. 1 ersichtlich ist, weist die Verpackungsmaschine einen Maschinenrahmen 1 und nacheinander angeordnet eine Formstation 2, eine Evakuier- und Versiegelungsstation 3 und eine Schneideinrichtung 4 auf. In der Verpackungsmaschine wird eine Folienbahn 5 von der Eingangsseite in die Maschine eingeführt. In der Formstation werden aus der Folienbahn Behälter 6 geformt. Diese werden nach dem Befüllen in einer in der Figur nicht dargestellten Füllstation in einer Evakuier- und Versiegelungsstation 3 mit einer Oberfolie versiegelt und schließlich mittels der Schneideinrichtung 4 voneinander getrennt. Der Maschinenrahmen 1 weist gleichzeitig auch die Führung für einen nicht gezeigten Kettenantrieb zum Fördern der Folienbahn 5 bzw. der daraus gebildeten Verpackungsbehälter 6 auf.As can be seen from Fig. 1, the packaging machine a machine frame 1 and successively arranged a molding station 2, an evacuation and sealing station 3 and one Cutting device 4 on. In the packaging machine, a Foil web 5 inserted into the machine from the input side. Containers 6 are formed from the film web in the forming station. After filling, these are not shown in a figure Filling station in an evacuation and sealing station 3 sealed with a top film and finally by means of the cutting device 4 separated from each other. The machine frame At the same time, 1 does not deny leadership for one shown chain drive for conveying the film web 5 or packaging container 6 formed therefrom.

Wie am besten aus den Figuren 2 bis 5 ersichtlich ist, weist eine Arbeitsstation, die hier beispielhaft als Evakuier- und Versiegelungsstation 3 dargestellt ist, ein Basisteil 7, ein mit diesem starr verbundenes Werkzeugoberteil 8 und ein relativ zu diesem bewegbares Werkzeugunterteil 9 auf. Das Basisteil 7 und das Werkzeugoberteil 8 der Arbeitsstation sind über Führungsstangen 10 miteinander verbunden.As can best be seen from FIGS. 2 to 5, points a workstation, which is exemplary here as an evacuation and Sealing station 3 is shown, a base part 7, one with this rigidly connected tool upper part 8 and a relative to this movable tool lower part 9. The base part 7 and the tool upper part 8 of the work station are on guide rods 10 connected together.

Es ist eine Hubeinrichtung zum Bewegen des Werkzeugunterteils 9 relativ zu dem Werkzeugoberteil 8 von einer in den Figuren 2 und 3 dargestellten offenen Stellung in eine in den Figuren 4 und 5 dargestellte geschlossene Stellung, in der das Werkzeugunterteil 9 und das Werkzeugoberteil 8 zusammenwirken, vorgesehen. Die Hubeinrichtung weist zwei über ein Joch 11 miteinander verbundene Kolben-Zylindereinrichtungen 12 auf. Die Zylinder 13 jeder Kolben-Zylindereinrichtung 12 sind jeweils mit dem Basisteil 7 verbunden, während die Kolbenstangen 14 jeweils mit dem Joch 11 verbunden sind, welches seinerseits das Werkzeugunterteil 9 trägt. Das Joch 11 und das mit diesem verbundene Werkzeugunterteil 9 ist mit auf den Führungsstangen 10 gleitenden Führungsbuchsen 15 verbunden. It is a lifting device for moving the lower tool part 9 relative to the upper tool part 8 of one in Figures 2 and 3 in an open position shown in FIGS. 4 and 5 shown closed position, in which the lower part of the tool 9 and the tool upper part 8 cooperate, provided. The Lifting device has two with one another via a yoke 11 connected piston-cylinder devices 12. The cylinders 13 each piston-cylinder device 12 are each with the Base part 7 connected, while the piston rods 14 each with are connected to the yoke 11, which in turn is the lower tool part 9 wears. The yoke 11 and the associated with it Lower tool part 9 is also on the guide rods 10 sliding guide bushings 15 connected.

Die Kolben-Zylindereinrichtungen 12 sind so ausgelegt, daß sie das Werkzeugunterteil 9 in einer ersten Schließbewegung über eine große Hubstrecke in einer Größe bis über 200mm von der offenen Stellung in die geschlossene Stellung und vice versa bewegen können.The piston-cylinder devices 12 are designed so that they the lower tool part 9 in a first closing movement a large stroke distance in a size up to over 200mm from the open position to the closed position and vice versa can move.

Wie insbesondere aus Fig. 2 und Fig. 4 ersichtlich ist, weist die Arbeitsstation 3 an ihren beiden Längsseiten jeweils ein Hebelsystem 20 zwischen dem beweglichen Werkzeugunterteil 9 und dem Maschinenrahmen 1 auf. Die Figuren 3 und 5 zeigen eine Längsansicht der Arbeitsstation 3, in der der Aufbau und die Wirkungsweise des Hebelsystems 20 am besten zu erkennen ist.As can be seen in particular from FIGS. 2 and 4, points the work station 3 on each of its two long sides Lever system 20 between the movable lower tool part 9 and the machine frame 1. Figures 3 and 5 show one Longitudinal view of the work station 3, in which the structure and the Effect of the lever system 20 is best seen.

Das Hebelsystem 20 weist zwei zweiarmige Hebel 21a, 21b auf. Der Drehpunkt 22a, 22b der Hebel 21a, 21b ist jeweils über eine Verbindungsstange 26a, 26b an einem Punkt 27a, 27b des Maschinenrahmens 1 angelenkt, wobei die Verbindungsstangen 26a, 26b an den Anlenkpunkten 27a, 27b drehbar gelagert sind. Das eine äußere Ende der Hebel 21a, 21b ist jeweils über eine Drehverbindung 23a, 23b mit dem Basisteil 7 drehbar verbunden. Das andere äußere Ende der Hebel 21a, 21b ist jeweils über eine Verbindungsstange 24a, 24b mit dem Joch 11 verbunden, wobei sowohl die Anlenkpunkte 25a, 25b der Stangen am Joch 11 als auch die Anlenkpunkte 28a, 28b der Stangen am Hebel drehbar ausgeführt sind.The lever system 20 has two two-armed levers 21a, 21b. Of the The pivot point 22a, 22b of the levers 21a, 21b is in each case one Connecting rod 26a, 26b at a point 27a, 27b of the Machine frame 1 articulated, the connecting rods 26a, 26b are rotatably supported at the articulation points 27a, 27b. The an outer end of the levers 21a, 21b is each over a Rotary connection 23a, 23b rotatably connected to the base part 7. The other outer end of the levers 21a, 21b is in each case one Connecting rod 24a, 24b connected to the yoke 11, wherein both the articulation points 25a, 25b of the rods on the yoke 11 as well the pivot points 28a, 28b of the rods on the lever are rotatable are executed.

Die Längen der Hebel und der Verbindungsstangen werden in Abhängigkeit von der Geometrie der Arbeitsstation und insbesondere von der Hubstrecke mit der das Werkzeugunterteil 9 gegen das Werkzeugoberteil 8 bewegt wird sowie in Abhängigkeit von der gewünschten Hubstrecke um die die gesamte Hubeinrichtung angehoben werden soll, wenn das Werkzeugunterteil 9 in die geöffnete Position bewegt wird, ausgewählt.The lengths of the levers and connecting rods are dependent on the geometry of the workstation and in particular of the stroke with which the lower tool part 9 against Tool upper part 8 is moved and depending on the desired stroke distance around the entire lifting device should be raised when the lower tool part 9 in the open Position is selected.

Die Betriebsweise der erfindungsgemäßen Hubeinrichtung ist wie folgt. Vor einem Arbeitsgang befindet sich die Arbeitsstation in der in den Figuren 2 und 3 gezeigten geöffneten Position, in der das Werkzeugoberteil 8 und das Werkzeugunterteil 9 einen Abstand voneinander aufweisen. Zum Einleiten des Arbeitsganges werden die Kolben-Zylindereinrichtungen 12 aktiviert, wobei das Werkzeugunterteil 9 einen ersten Schließweg mit einer Hubstrecke von bis über 200mm gegen das Werkzeugoberteil 8 ausführt. Da das Basisteil 7 und das Werkzeugoberteil 8 starr miteinander verbunden sind und die Kolbenzylindereinrichtungen 12 das Werkzeugunterteil 9 relativ zu dem Basisteil 7 vertikal nach oben bewegen, bewegt sich das Werkzeugunterteil 9 auf das Werkzeugoberteil 8 zu, bis die beiden Werkzeugteile 8, 9 in der geschlossenen Position der Arbeitsstation, die in den Figuren 4 und 5 dargestellt ist, zusammenwirken. In dieser Position liegt die Unterkante des Werkzeugoberteiles auf der Folienbahn 5 auf.The operation of the lifting device according to the invention is like follows. The workstation is located in before a work step the open position shown in Figures 2 and 3, in the the upper tool part 8 and the lower tool part 9 a distance from each other. To initiate the operation the piston-cylinder devices 12 activated, the Tool lower part 9 a first closing path with a stroke of up to over 200mm against the tool upper part 8. Since that Base part 7 and the upper tool part 8 rigid with each other are connected and the piston cylinder devices 12 the Lower tool part 9 vertically relative to the base part 7 move up, the lower tool part 9 moves to the Tool upper part 8 until the two tool parts 8, 9 in the closed position of the workstation shown in FIGS and 5 is shown to cooperate. In this position the lower edge of the upper part of the tool on the film web 5.

Nach Ausführen des Arbeitsganges wird das Werkzeugunterteil 9 wieder in die geöffnete Stellung gemäß den Figuren 2 und 3 bewegt. Bei einem Absenken des Werkzeugunterteiles 9 in die geöffnete Stellung der Arbeitsstation übertragen die Verbindungsstangen 24a, 24b die Abwärtsbewegung des Werkzeugunterteiles 9 bzw. des damit verbundenen Joches 11 auf die jeweils mit den Verbindungsstangen 24a, 24b verbundenen Enden der Hebel 21a, 21b, wodurch die Hebel 21a, 21b jeweils um ihren Drehpunkt 22a, 22b gedreht werden. Dadurch führen die jeweils mit dem Basisteil 7 verbundenen äußeren Enden der Hebel 21a, 21b eine entsprechende Aufwärtsbewegung aus, wodurch das Basisteil 7 relativ zu dem Maschinenrahmen 1 und damit relativ zur Folienbahn 5 angehoben wird. Da das Werkzeugoberteil mit dem Basisteil starr verbunden ist, wird daher das Werkzeugoberteil 8 von der Folienbahn wegbewegt. Somit stoßen Packungen 6, die eine Ausdehnung nach unten und nach oben aufweisen, nicht an der Unterkante des Werkzeugoberteiles 8 an und können problemlos weiterbefördert werden. Bei einem erneuten Anheben des Werkzeugunterteiles 9 in die Arbeitsstellung werden die Hebel 21a, 21b in entgegengesetzter Richtung gedreht, wodurch das Basisteil 7 und das damit verbundene Werkzeugoberteil 8 wieder abgesenkt werden.After performing the operation, the lower tool part 9 moved back to the open position according to Figures 2 and 3. When the lower tool part 9 is lowered into the open position The connecting rods transmit the position of the workstation 24a, 24b the downward movement of the lower tool part 9 and the associated yoke 11 on each ends of the levers connected to the connecting rods 24a, 24b 21a, 21b, whereby the levers 21a, 21b each about their pivot point 22a, 22b can be rotated. Thereby they lead with the Base part 7 connected outer ends of the levers 21a, 21b a corresponding upward movement, whereby the base part 7 relative to the machine frame 1 and thus relative to Foil sheet 5 is raised. Since the upper part of the tool with the Base part is rigidly connected, the tool upper part 8 moved away from the film web. Thus packs 6 encounter one Extend downwards and upwards, not at the Bottom edge of the upper tool part 8 and can easily be carried on. When lifting the Lower tool part 9 in the working position, the levers 21a, 21b rotated in the opposite direction, whereby the Base part 7 and the associated upper tool part 8 again be lowered.

In einer weiteren Ausführungsform weist die Hubeinrichtung zusätzlich zu den Kolbenzylindereinrichtungen 12 ein Krafthubelement 30 auf, welches zur Erzeugung einer hohen Schließkraft zwischen dem Werkzeugunterteil 9 und dem Werkzeugoberteil 8 dient, um die Wirkkräfte beim Arbeitsgang in geschlossener Position der Arbeitsstation aufnehmen zu können. Die Krafterzeugung wird dabei nach Abschluß der ersten Schließbewegung des Werkzeugunterteiles 9 gegen das Werkzeugoberteil 8 mittels der Kolben-Zylindereinrichtungen 12 über eine zweite von dem Krafthubelement 30 erzeugte Schließbewegung mit einem relativ zu der ersten Schließbewegung geringen Hubweg erzeugt. Das Krafthubelement 30 weist einen Antrieb und eine mechanische Kraftübersetzungseinrichtung auf, die derart ausgebildet ist, daß sie einen nahezu konstanten Kraftverlauf aufweist, wobei bei Auftreten eines Widerstandes die Kraft für die zweite Schließbewegung erzeugt wird.In a further embodiment, the lifting device additionally has a power stroke element to the piston-cylinder devices 12 30 on which to generate a high closing force between the lower tool part 9 and the upper tool part 8 serves to the active forces during the operation in the closed position to be able to pick up the workstation. The force generation is after the first closing movement of the Lower tool part 9 against the upper tool part 8 by means of Piston-cylinder devices 12 via a second of that Power stroke element 30 generates a closing movement with a relative to the first closing movement produces a small stroke. The Power stroke element 30 has a drive and a mechanical Force transmission device, which is designed such that it has an almost constant force curve, with Resistance occurs the force for the second Closing movement is generated.

Claims (9)

Hubeinrichtung für eine Arbeitsstation einer Verpackungsmaschine, wobei die Arbeitsstation ein erstes Werkzeugteil (8) und ein relativ zu diesem in eine abgesenkte Stellung senkbares bzw. in eine angehobene Stellung anhebbares zweites Werkzeugteil (9), die auf gegenüberliegenden Seiten einer Materialbahn (5) vorgesehen sind, aufweist, mit einem ersten Hubelement (12, 13, 14) zum Bewegen des zweiten Werkzeugteiles (9) relativ zu dem ersten Werkzeugteil (8), gekennzeichnet durch ein zweites Hubelement (20), das mit dem zweiten Werkzeugteil (9) derart gekoppelt ist, daß bei der Bewegung des zweiten Werkzeugteiles (9) in die abgesenkte Stellung das erste Werkzeugteil (8) von der Materialbahn (5) wegbewegt wird.Lifting device for a work station of a packaging machine, the work station comprising a first tool part (8) and a lowerable relative to this in a lowered position or second tool part that can be raised into a raised position (9) on opposite sides of a material web (5) are provided, with a first lifting element (12, 13, 14) for moving the second Tool part (9) relative to the first tool part (8), characterized by a second lifting element (20) which is connected to the second tool part (9) is coupled such that when moving of the second tool part (9) in the lowered position the first tool part (8) is moved away from the material web (5) becomes. Hubeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das zweite Hubelement (20) als Hebelsystem ausgebildet ist.Lifting device according to claim 1, characterized in that the second lifting element (20) is designed as a lever system. Hubeinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das Hebelsystem mit einem die Materialbahn (5) seitlich begrenzenden Maschinenrahmen (1) der Verpackungsmaschine und mit dem zweiten Werkzeugteil (9) verbunden ist.Lifting device according to claim 2, characterized in that the lever system with the material web (5) on the side limiting machine frame (1) of the packaging machine and with the second tool part (9) is connected. Hubeinrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das erste Hubelement (12, 13, 14) zwischen einem mit dem ersten Werkzeugteil (8) starr verbundenen Basisteil (7) der Arbeitsstation und dem zweiten Werkzeugteil (9) vorgesehen ist. Lifting device according to claim 3, characterized in that the first lifting element (12, 13, 14) between one with the first Tool part (8) rigidly connected base part (7) of the work station and the second tool part (9) is provided. Hubeinrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das Hebelsystem (20) wenigstens einen Hebel (21a; 21b) aufweist, dessen Drehpunkt (22a; 22b) über eine Verbindungsstange (26a; 26b) an dem Maschinenrahmen (1) angelenkt ist und dessen eines äußere Ende mit dem Basisteil (7) drehbar verbunden ist und dessen anderes äußeres Ende über eine Verbindungsstange (24a; 24b) mit dem zweiten Werkzeugteil (9) verbunden ist.Lifting device according to claim 4, characterized in that the lever system (20) has at least one lever (21a; 21b), whose fulcrum (22a; 22b) via a connecting rod (26a; 26b) is articulated on the machine frame (1) and one of them outer end is rotatably connected to the base part (7) and its other outer end via a connecting rod (24a; 24b) is connected to the second tool part (9). Hubeinrichtung nach Anspruch 5, dadurch gekennzeichnet, daß das Hebelsystem (20) zwei Hebel (21a, 21b) aufweist, wobei die Anordnung der Hebel (21a, 21b) und der Verbindungsstangen (24a, 24b, 26a, 26b) derart ausgeführt ist, daß die Hebel (21a, 21b) bei einer Bewegung des zweiten Werkzeugteiles (9) in entgegengesetzter Richtung gedreht werden.Lifting device according to claim 5, characterized in that the lever system (20) has two levers (21a, 21b), the Arrangement of the levers (21a, 21b) and the connecting rods (24a, 24b, 26a, 26b) is designed such that the levers (21a, 21b) when the second tool part (9) moves be turned in the opposite direction. Hubeinrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß zwei zweite Hubelemente (20) vorgesehen sind, die jeweils an gegenüberliegenden Längsseiten der Arbeitsstation vorgesehen sind.Lifting device according to one of claims 1 to 6, characterized characterized in that two second lifting elements (20) are provided are, each on opposite long sides of the workstation are provided. Hubeinrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß ein Krafthubelement (30) zum Erzeugen einer erhöhten Schließkraft des zweiten Werkzeugteiles (9) gegen das erste Werkzeugteil (8) in der angehobenen Stellung des zweiten Werkzeugteiles (9) vorgesehen ist.Lifting device according to one of claims 1 to 7, characterized characterized in that a power stroke element (30) for generating a increased closing force of the second tool part (9) against that first tool part (8) in the raised position of the second Tool part (9) is provided. Verpackungsmaschine mit einer Hubeinrichtung nach einem der Ansprüche 1 bis 8.Packaging machine with a lifting device according to one of the Claims 1 to 8.
EP98113904A 1997-08-08 1998-07-24 Lifting device for a working station of a packaging machine Expired - Lifetime EP0895934B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19734513A DE19734513A1 (en) 1997-08-08 1997-08-08 Lifting device for a work station of a packaging machine
DE19734513 1997-08-08

Publications (2)

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EP0895934A1 true EP0895934A1 (en) 1999-02-10
EP0895934B1 EP0895934B1 (en) 2005-03-30

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EP98113904A Expired - Lifetime EP0895934B1 (en) 1997-08-08 1998-07-24 Lifting device for a working station of a packaging machine

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US (1) US6085497A (en)
EP (1) EP0895934B1 (en)
JP (1) JP2985080B2 (en)
DE (2) DE19734513A1 (en)
ES (1) ES2239373T3 (en)

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EP3816055A1 (en) * 2019-11-04 2021-05-05 MULTIVAC Sepp Haggenmüller SE & Co. KG Lifting gear changer

Also Published As

Publication number Publication date
ES2239373T3 (en) 2005-09-16
EP0895934B1 (en) 2005-03-30
DE19734513A1 (en) 1999-02-11
JP2985080B2 (en) 1999-11-29
US6085497A (en) 2000-07-11
JPH11105835A (en) 1999-04-20
DE59812690D1 (en) 2005-05-04

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