EP2149501B1 - Packaging machine with 1-point tool locking - Google Patents

Packaging machine with 1-point tool locking Download PDF

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Publication number
EP2149501B1
EP2149501B1 EP09008819A EP09008819A EP2149501B1 EP 2149501 B1 EP2149501 B1 EP 2149501B1 EP 09008819 A EP09008819 A EP 09008819A EP 09008819 A EP09008819 A EP 09008819A EP 2149501 B1 EP2149501 B1 EP 2149501B1
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EP
European Patent Office
Prior art keywords
lockable
tool half
tool
packaging machine
machine frame
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.)
Not-in-force
Application number
EP09008819A
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German (de)
French (fr)
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EP2149501A1 (en
Inventor
Lars Ickert
Bernhard Fickler
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.)
Multivac Sepp Haggenmueller GmbH and Co KG
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Multivac Sepp Haggenmueller GmbH and Co KG
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Publication of EP2149501A1 publication Critical patent/EP2149501A1/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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/04—Machines constructed with readily-detachable units or assemblies, e.g. to facilitate maintenance
    • 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
    • B65B31/025—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 specially adapted for rigid or semi-rigid containers
    • B65B31/028—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 specially adapted for rigid or semi-rigid containers closed by a lid sealed to the upper rim of the container, e.g. tray-like container

Definitions

  • the present invention relates to a packaging machine having a machine frame and two tool halves, wherein at least one of the tool halves is lockable to the machine frame by a locking mechanism and the other tool half is movable toward the lockable tool half in a stroke direction, the lockable tool half being a sealing tool top and the other tool half a sealing tool base.
  • Conventional packaging machines have two or four locking mechanisms. These cause a locking at the outer edges of the lockable tool half in the stroke direction. In this case, an alternating load occurs when closing the tool or when sealing. The tool hangs on its outer edges and is then bent open during sealing with a surface load in the center. Overall, such packaging machines have disadvantages due to increased friction and increased abrasion between the tool and the machine side. The parts cost is relatively high and mastering the multiple tolerances is difficult. In addition, the tool length is fixed. The conventional locking mechanisms must be cleaned regularly because of the high hygiene requirements for packaging machines for food packaging.
  • German patent application DE 44 36 407 A1 discloses a packaging machine having a chamber of a top and a lower movable chamber part, which is provided with a booster which is supported by levers on an abutment on the machine frame.
  • the European patent application EP 0 388 335 A1 discloses a fastener for a molding element of an injection molding machine, wherein on a shaft of the mold element, a plurality of wedges are provided, which can engage behind corresponding wedges in the interior of an opening of a receptacle.
  • the patent DE 42 16 207 C1 discloses a cutting device for a packaging machine, wherein an abutment for a knife is provided on a piston.
  • an abutment for a knife is provided on a piston.
  • the piston By means of a conical wedge, which engages in a slot of the piston, the piston can be fixed so that the forces occurring during the cutting process can be better absorbed.
  • the packaging machine has a machine frame and two tool halves, wherein at least one of the tool halves is lockable to the machine frame by a single locking mechanism and the other tool half is movable toward the lockable tool half in a stroke direction.
  • the locking mechanism further has a receptacle formed in the lockable tool half and a single latch provided on the machine frame and insertable into the receptacle of the lockable tool half for locking and / or locking the lockable tool half to the machine frame center.
  • the locking mechanism described above is simple and inexpensive.
  • the locking mechanism can be further easily cleaned, whereby the hygiene requirements is more easily complied with.
  • An embodiment of a packaging machine according to the invention is based on a Schalenversch acrossmaschine, also called Traysealer, with reference to the Fig. 1 described.
  • the Fig. 1 shows the tray sealer with a machine frame 1, a feed belt 20, one or more workstations 21 such as an evacuation, gassing, sealing and cutting station, a discharge belt 22, an operating device 23, a Folienzu Foodrolle 24 and a Folienrestaufwickler 25.
  • Auf dem Feed belt 20 and the discharge belt 22 are in operation, for example shells (not shown) in the work station 21 into and out of her transported.
  • the packages are evacuated and / or fumigated and sealed with a modified atmosphere.
  • An upper film (not shown) is fed through the film feed roller 24 and welded in the work station 21 to the trays.
  • the film residue is finally wound on the Folienrestaufwickler 25.
  • the sealed cups are advanced through the discharge belt 22 and can be removed.
  • the Fig. 2 shows a schematic view of a workstation 21 in the form of a sealing device 21 for the packaging machine according to the present invention.
  • the sealing device 21 is connected to the machine frame 1.
  • the sealing device 21 has two mold halves 2, 3, of which the upper mold half 2 can be locked in the illustrated embodiment by a single locking mechanism 4 on the machine frame 1.
  • the sealing device 21 further has the lifting mechanism 9, which moves the other tool half 3 in a stroke direction to the lockable tool half 2.
  • the Fig. 2 shows in the upper part of a broken section, in which the details of the locking mechanism 4 are shown.
  • the locking mechanism 4 has a receptacle 5 formed in the upper lockable mold half 2.
  • the receptacle 5 is an opening which is substantially horizontal, that is formed perpendicular to the stroke direction.
  • the receptacle 5 may be formed in particular as an eyelet 5.
  • Such an eyelet 5 can further serve for transport purposes for suspending the lockable tool half 2, for example, to a crane.
  • the locking mechanism 4 further has a single latch 6 in the form of a bolt 6 which is provided on the machine frame 1 and in the receptacle 5 of the lockable mold half 2 is insertable to lock the lockable mold half 2 on the machine frame 1.
  • the bolt 6 is on the right side of Fig. 2 coupled to a pneumatic cylinder 8, the bolt 6 to the left and to the right according to Fig. 2 pushes back and forth.
  • 5 bolt guides are preferably in the bolt feed direction in front of and behind the recording 10 arranged on the machine frame 1, which guide and support the bolt 6 when inserted into the receptacle 5.
  • the bolt guides 10 may comprise a common sliding material such as bearings.
  • the locking mechanism 4 described above is simple and inexpensive. The locking mechanism 4 can further be easily cleaned, whereby the hygiene requirements is more easily complied with.
  • the receptacle 5 is arranged substantially in the center of gravity of the lockable mold half 2.
  • a lock is independent of the tool length and width.
  • the lockable tool half 2 is very well centered.
  • the space on the outer sides of the lockable tool half 2 is free, so that the sealing device 21 is compact.
  • a further deflection of the lockable tool half 2 is reduced by the central locking.
  • One end 6a of the bolt 6 to be inserted into the receptacle 5 is conical.
  • the receptacle 5 preferably has a bevelled peripheral surface 5a.
  • the lockable mold half 2 is securely locked to the machine frame 1.
  • the tolerances are easy to control, with stresses and inaccuracies can be minimized by thermal expansion of the lockable mold half 2.
  • the centering of the lockable tool half 2 is further simplified by the conical end 6a of the bolt 6.
  • the receptacle 5 is interchangeably attached to the lockable mold half 2 and formed of a material which is softer than the material of the bolt 6.
  • the receptacle 5 is advantageously the only wearing part and can be easily replaced.
  • abutment sections 7 are provided on the lockable tool half 2 for a defined abutment of the lockable tool half 2 on the machine frame 1.
  • the lockable tool half 2 always assumes a defined position, which is not or only slightly changed by clamping forces of the locking mechanism 4.
  • the abutment sections 7 may be provided on the machine frame 1.
  • the tool halves 2, 3 may have a centering device for centering the lockable tool half 2 on the other tool half 3.
  • the centering device can be formed by projections which are provided on a tool half 2, 3 and are guided into corresponding recesses in the other tool half 2, 3.
  • the tool halves 2, 3 can also be centered respectively with the machine frame 1.
  • the lockable tool half 2 has electrical terminals and fluid ports connected to corresponding electrical terminals and fluid ports of the machine frame 1 when the lockable tool half 2 is locked to the machine frame 1. At the interface of the electrical connections and the fluid connections suitable seals are provided.
  • the bolt 6 is actuated by the pneumatic cylinder 8.
  • a large and permanent locking force can be provided in an advantageous manner.
  • a hydraulic cylinder can be used. To unlock, it is necessary that the cylinder 8 is driven and pulled out of the receptacle 5 with a certain force. The release of the locking force can therefore only be active by the cylinder 8 is driven. Although the cylinder 8 provides no locking force in the unpressurized state, the lockable tool half 2 can not fall down.
  • the removal of the lockable tool half 2 is done in the reverse order. This is the other tool half 3 raised by the hoist to the lockable mold half 2. Thereafter, the release takes place for unlocking, so that the bolt 6 can be moved out of the receptacle 5 out.
  • the lockable tool half 2 is now by means of its weight on the other tool half 3. The hoist is lowered with both tool halves 2, 3, and the tool halves 2, 3 can be removed from the sealing device 21.
  • the sealing device 21 may be modified such that the lockable tool half is the sealing tool lower part and that the other tool half is the sealing tool upper part.
  • the bolt 6 is actuated by a pneumatic cylinder 8.
  • a pneumatic cylinder 8 instead of the pneumatic cylinder 8, a hydraulic cylinder or a spring mechanism can be used.
  • pneumatic or mechanical measures can be provided, wherein a release for unlocking takes place only under certain conditions.
  • a condition may be that the other tool half 3 has been lifted by the hoist 9 to below the lockable mold half 2.
  • Another condition may be that a cover of the machine frame 1 is closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Earth Drilling (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Package Frames And Binding Bands (AREA)

Abstract

The packaging machine has a machine frame (1) and two mold halves (2,3), where former mold half is locked by a single locking mechanism (4) in the machine frame. A retainer (5) is provided in the locked mold half, where a lock (6) is provided on the machine frame for locking the retainer at the machine frame or at center. An independent claim is included for a tool mounting of the packaging machine.

Description

Die vorliegende Erfindung bezieht sich auf eine Verpackungsmaschine mit einem Maschinenrahmen und zwei Werkzeughälften, wobei mindestens eine der Werkzeughälften durch einen Verriegelungsmechanismus an dem Maschinenrahmen verriegelbar ist und die andere Werkzeughälfte in einer Hubrichtung zu der verriegelbaren Werkzeughälfte hin bewegbar ist, wobei die verriegelbare Werkzeughälfte ein Siegelwerkzeugoberteil ist und die andere Werkzeughälfte ein Siegelwerkzeugunterteil.The present invention relates to a packaging machine having a machine frame and two tool halves, wherein at least one of the tool halves is lockable to the machine frame by a locking mechanism and the other tool half is movable toward the lockable tool half in a stroke direction, the lockable tool half being a sealing tool top and the other tool half a sealing tool base.

Herkömmliche Verpackungsmaschinen haben zwei oder vier Verriegelungsmechanismen. Diese bewirken eine Verriegelung an den Außenkanten der verriegelbaren Werkzeughälfte in der Hubrichtung. Hierbei tritt eine Wechsellast beim Schließen des Werkzeugs bzw. beim Siegeln auf. Das Werkzeug hängt an seinen Außenkanten und wird dann beim Siegeln mit einer Flächenlast im Zentrum aufgebogen. Insgesamt haben derartige Verpackungsmaschinen Nachteile aufgrund einer erhöhten Reibung und eines erhöhten Abriebs zwischen Werkzeug und Maschinenseite. Der Teileaufwand ist relativ hoch und die Beherrschung der mehrfachen Toleranzen ist schwierig. Darüber hinaus ist die Werkzeuglänge fest vorgegeben. Die herkömmlichen Verriegelungsmechanismen müssen regelmäßig gereinigt werden, da für Verpackungsmaschinen zum Verpacken von Lebensmitteln hohe Hygieneanforderungen gestellt werden.Conventional packaging machines have two or four locking mechanisms. These cause a locking at the outer edges of the lockable tool half in the stroke direction. In this case, an alternating load occurs when closing the tool or when sealing. The tool hangs on its outer edges and is then bent open during sealing with a surface load in the center. Overall, such packaging machines have disadvantages due to increased friction and increased abrasion between the tool and the machine side. The parts cost is relatively high and mastering the multiple tolerances is difficult. In addition, the tool length is fixed. The conventional locking mechanisms must be cleaned regularly because of the high hygiene requirements for packaging machines for food packaging.

Die deutsche Offenlegungsschrift DE 44 36 407 A1 offenbart eine Verpackungsmaschine mit einer Kammer aus einem Oberteil und einem unteren beweglichen Kammerteil, das mit einem Kraftverstärker versehen ist, der sich über Hebel auf einem Widerlager am Maschinenrahmen abstützt.The German patent application DE 44 36 407 A1 discloses a packaging machine having a chamber of a top and a lower movable chamber part, which is provided with a booster which is supported by levers on an abutment on the machine frame.

Die europäische Patentanmeldung EP 0 388 335 A1 offenbart eine Befestigung für ein Formelement einer Spritzgussmaschine, wobei an einem Schaft des Formelements mehrere Keile vorgesehen sind, die im Inneren einer Öffnung einer Aufnahme hinter entsprechende Keile eingreifen können.The European patent application EP 0 388 335 A1 discloses a fastener for a molding element of an injection molding machine, wherein on a shaft of the mold element, a plurality of wedges are provided, which can engage behind corresponding wedges in the interior of an opening of a receptacle.

Die Patentschrift DE 42 16 207 C1 offenbart eine Schneideeinrichtung für eine Verpackungsmaschine, wobei ein Widerlager für ein Messer an einem Kolben vorgesehen ist. Mittels eines konischen Keils, der in einen Schlitz des Kolbens eingreift, kann der Kolben festgelegt werden, damit die beim Schneidvorgang auftretenden Kräfte besser aufgenommen werden können.The patent DE 42 16 207 C1 discloses a cutting device for a packaging machine, wherein an abutment for a knife is provided on a piston. By means of a conical wedge, which engages in a slot of the piston, the piston can be fixed so that the forces occurring during the cutting process can be better absorbed.

Es ist die Aufgabe der vorliegenden Erfindung, eine Verpackungsmaschine mit einem Maschinenrahmen und zwei Siegelwerkzeughälften vorzusehen, die einen vereinfachten und hygienischen Befestigungsmechanismus aufweist, um die genannten Nachteile zu beseitigen.It is the object of the present invention to provide a packaging machine with a machine frame and two sealing tool halves, which has a simplified and hygienic attachment mechanism to eliminate the disadvantages mentioned.

Diese Aufgabe wird durch die Verpackungsmaschine mit den Merkmalen des Anspruchs 1 und durch das Verfahren mit den Merkmalen des Anspruchs 14 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.This object is achieved by the packaging machine having the features of claim 1 and by the method having the features of claim 14. Advantageous developments are the subject of the dependent claims.

Die Verpackungsmaschine hat einen Maschinenrahmen und zwei Werkzeughälften, wobei mindestens eine der Werkzeughälften durch einen einzigen Verriegelungsmechanismus an dem Maschinenrahmen verriegelbar ist und die andere Werkzeughälfte in einer Hubrichtung zu der verriegelbaren Werkzeughälfte hin bewegbar ist. Der Verriegelungsmechanismus hat des weiteren eine Aufnahme, die in der verriegelbaren Werkzeughälfte ausgebildet ist, und einen einzigen Riegel, der an dem Maschinenrahmen vorgesehen ist und in die Aufnahme der verriegelbaren Werkzeughälfte einführbar ist, um die verriegelbare Werkzeughälfte an dem Maschinenrahmen zu verriegeln und/oder zu zentrieren.The packaging machine has a machine frame and two tool halves, wherein at least one of the tool halves is lockable to the machine frame by a single locking mechanism and the other tool half is movable toward the lockable tool half in a stroke direction. The locking mechanism further has a receptacle formed in the lockable tool half and a single latch provided on the machine frame and insertable into the receptacle of the lockable tool half for locking and / or locking the lockable tool half to the machine frame center.

In vorteilhafter Weise ist der vorstehend beschriebene Verriegelungsmechanismus einfach und kostengünstig. Der Verriegelungsmechanismus kann des weiteren einfach gereinigt werden, wodurch den Hygieneauflagen leichter nachgekommen wird.Advantageously, the locking mechanism described above is simple and inexpensive. The locking mechanism can be further easily cleaned, whereby the hygiene requirements is more easily complied with.

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

Fig. 1
eine Ansicht einer Verpackungsmaschine gemäß der vor- liegenden Erfindung; und
Fig. 2
eine schematische Ansicht einer Siegelvorrichtung für die Verpackungsmaschine gemäß der vorliegenden Erfin- dung.
Further features and advantages of the invention will become apparent from the description of an embodiment with reference to the accompanying drawings. From the figures show:
Fig. 1
a view of a packaging machine according to the present invention; and
Fig. 2
a schematic view of a sealing device for the packaging machine according to the present invention.

Ein Ausführungsbeispiel einer Verpackungsmaschine gemäß der Erfindung wird anhand einer Schalenverschließmaschine, auch Traysealer genannt, unter Bezugnahme auf die Fig. 1 beschrieben.An embodiment of a packaging machine according to the invention is based on a Schalenverschließmaschine, also called Traysealer, with reference to the Fig. 1 described.

Die Fig. 1 zeigt den Traysealer mit einem Maschinenrahmen 1, einem Zuführband 20, einer oder mehreren Arbeitsstationen 21 wie z.B. einer Evakuier-, Begasungs-, Siegel-, und Schneidstation, einem Abführband 22, einer Bedienvorrichtung 23, einer Folienzuführrolle 24 und einem Folienrestaufwickler 25. Auf dem Zuführband 20 bzw. dem Abführband 22 werden im Betrieb beispielsweise Schalen (nicht gezeigt) in die Arbeitsstation 21 hinein bzw. aus ihr heraus transportiert. In der Arbeitsstation 21 werden die Packungen z.B. evakuiert und/oder mit modifizierter Atmosphäre begast und versiegelt. Eine Oberfolie (nicht gezeigt) wird durch die Folienzuführrolle 24 zugeführt und in der Arbeitsstation 21 an die Schalen geschweißt. Der Folienrest wird schließlich auf den Folienrestaufwickler 25 aufgewickelt. Die versiegelten Schalen werden durch das Abführband 22 vorgeschoben und können entnommen werden.The Fig. 1 shows the tray sealer with a machine frame 1, a feed belt 20, one or more workstations 21 such as an evacuation, gassing, sealing and cutting station, a discharge belt 22, an operating device 23, a Folienzuführrolle 24 and a Folienrestaufwickler 25. Auf dem Feed belt 20 and the discharge belt 22 are in operation, for example shells (not shown) in the work station 21 into and out of her transported. In the workstation 21, for example, the packages are evacuated and / or fumigated and sealed with a modified atmosphere. An upper film (not shown) is fed through the film feed roller 24 and welded in the work station 21 to the trays. The film residue is finally wound on the Folienrestaufwickler 25. The sealed cups are advanced through the discharge belt 22 and can be removed.

Die Fig. 2 zeigt eine schematische Ansicht einer Arbeitsstation 21 in Gestalt einer Siegelvorrichtung 21 für die Verpackungsmaschine gemäß der vorliegenden Erfindung.The Fig. 2 shows a schematic view of a workstation 21 in the form of a sealing device 21 for the packaging machine according to the present invention.

Die Siegelvorrichtung 21 ist mit dem Maschinenrahmen 1 verbunden. Die Siegelvorrichtung 21 hat zwei Werkzeughälften 2, 3, von denen die obere Werkzeughälfte 2 im dargestellten Ausführungsbeispiel durch einen einzigen Verriegelungsmechanismus 4 an dem Maschinenrahmen 1 verriegelbar ist. Die Siegelvorrichtung 21 hat des weiteren das Hubwerk 9, das die andere Werkzeughälfte 3 in einer Hubrichtung zu der verriegelbaren Werkzeughälfte 2 bewegt.The sealing device 21 is connected to the machine frame 1. The sealing device 21 has two mold halves 2, 3, of which the upper mold half 2 can be locked in the illustrated embodiment by a single locking mechanism 4 on the machine frame 1. The sealing device 21 further has the lifting mechanism 9, which moves the other tool half 3 in a stroke direction to the lockable tool half 2.

Die Fig. 2 zeigt im oberen Teil einen aufgebrochenen Abschnitt, in dem die Einzelheiten des Verriegelungsmechanismus 4 gezeigt sind. Der Verriegelungsmechanismus 4 hat eine Aufnahme 5, die in der oberen, verriegelbaren Werkzeughälfte 2 ausgebildet ist. Bei dem dargestellten Ausführungsbeispiel ist die Aufnahme 5 eine Öffnung, die im Wesentlichen horizontal, d.h. senkrecht zur Hubrichtung ausgebildet ist. Die Aufnahme 5 kann insbesondere als eine Öse 5 ausgebildet sein. Eine derartige Öse 5 kann des weiteren für Transportzwecke zum Aufhängen der verriegelbaren Werkzeughälfte 2 z.B. an einen Kran dienen.The Fig. 2 shows in the upper part of a broken section, in which the details of the locking mechanism 4 are shown. The locking mechanism 4 has a receptacle 5 formed in the upper lockable mold half 2. In the illustrated embodiment, the receptacle 5 is an opening which is substantially horizontal, that is formed perpendicular to the stroke direction. The receptacle 5 may be formed in particular as an eyelet 5. Such an eyelet 5 can further serve for transport purposes for suspending the lockable tool half 2, for example, to a crane.

Der Verriegelungsmechanismus 4 hat des weiteren einen einzigen Riegel 6 in Gestalt eines Bolzens 6, der an dem Maschinenrahmen 1 vorgesehen ist und in die Aufnahme 5 der verriegelbaren Werkzeughälfte 2 einführbar ist, um die verriegelbare Werkzeughälfte 2 an dem Maschinenrahmen 1 zu verriegeln. Der Bolzen 6 ist an der rechten Seite der Fig. 2 an einen Pneumatikzylinder 8 gekoppelt, der den Bolzen 6 nach links und nach rechts gemäß der Fig. 2 vor und zurück schiebt. Zusätzlich sind vorzugsweise in der Bolzenvorschubrichtung vor und hinter der Aufnahme 5 Bolzenführungen 10 am Maschinenrahmen 1 angeordnet, die den Bolzen 6 beim Einführen in die Aufnahme 5 führen und stützen. Die Bolzenführungen 10 können ein gewöhnliches Gleitmaterial wie z.B. Lagerschalen aufweisen. In vorteilhafter Weise ist der vorstehend beschriebene Verriegelungsmechanismus 4 einfach und kostengünstig. Der Verriegelungsmechanismus 4 kann des weiteren einfach gereinigt werden, wodurch den Hygieneauflagen leichter nachgekommen wird.The locking mechanism 4 further has a single latch 6 in the form of a bolt 6 which is provided on the machine frame 1 and in the receptacle 5 of the lockable mold half 2 is insertable to lock the lockable mold half 2 on the machine frame 1. The bolt 6 is on the right side of Fig. 2 coupled to a pneumatic cylinder 8, the bolt 6 to the left and to the right according to Fig. 2 pushes back and forth. In addition, 5 bolt guides are preferably in the bolt feed direction in front of and behind the recording 10 arranged on the machine frame 1, which guide and support the bolt 6 when inserted into the receptacle 5. The bolt guides 10 may comprise a common sliding material such as bearings. Advantageously, the locking mechanism 4 described above is simple and inexpensive. The locking mechanism 4 can further be easily cleaned, whereby the hygiene requirements is more easily complied with.

Bei dem dargestellten Ausführungsbeispiel ist die Aufnahme 5 im wesentlichen im Schwerpunkt der verriegelbaren Werkzeughälfte 2 angeordnet. In vorteilhafter Weise ist eine derartige Verriegelung unabhängig von der Werkzeuglänge und -breite. Darüber hinaus wird die verriegelbare Werkzeughälfte 2 sehr gut zentriert. Des weiteren ist der Raum an den Außenseiten der verriegelbaren Werkzeughälfte 2 frei, so dass die Siegelvorrichtung 21 kompakt ist. Durch die mittige Verriegelung wird darüber hinaus eine weitere Durchbiegung der verriegelbaren Werkzeughälfte 2 verringert.In the illustrated embodiment, the receptacle 5 is arranged substantially in the center of gravity of the lockable mold half 2. Advantageously, such a lock is independent of the tool length and width. In addition, the lockable tool half 2 is very well centered. Furthermore, the space on the outer sides of the lockable tool half 2 is free, so that the sealing device 21 is compact. In addition, a further deflection of the lockable tool half 2 is reduced by the central locking.

Ein Ende 6a des Bolzens 6, das in die Aufnahme 5 einzuführen ist, ist konisch ausgebildet. Zusätzlich hat die Aufnahme 5 vorzugsweise eine abgeschrägte Umfangsfläche 5a. In vorteilhafter Weise wird dadurch die verriegelbare Werkzeughälfte 2 sicher an dem Maschinenrahmen 1 verriegelt. Darüber hinaus sind die Toleranzen einfach zu beherrschen, wobei Beanspruchungen und Ungenauigkeiten durch Wärmedehnung der verriegelbaren Werkzeughälfte 2 minimiert werden können. Die Zentrierung der verriegelbaren Werkzeughälfte 2 wird durch das konische Ende 6a des Bolzens 6 weiter vereinfacht.One end 6a of the bolt 6 to be inserted into the receptacle 5 is conical. In addition, the receptacle 5 preferably has a bevelled peripheral surface 5a. Advantageously, thereby the lockable mold half 2 is securely locked to the machine frame 1. In addition, the tolerances are easy to control, with stresses and inaccuracies can be minimized by thermal expansion of the lockable mold half 2. The centering of the lockable tool half 2 is further simplified by the conical end 6a of the bolt 6.

Vorzugsweise ist die Aufnahme 5 austauschbar an der verriegelbaren Werkzeughälfte 2 angebracht und aus einem Material ausgebildet ist, das weicher ist als das Material des Bolzens 6. Dadurch ist die Aufnahme 5 in vorteilhafter Weise das einzige Verschleißteil und kann einfach ausgetauscht werden.Preferably, the receptacle 5 is interchangeably attached to the lockable mold half 2 and formed of a material which is softer than the material of the bolt 6. Thus, the receptacle 5 is advantageously the only wearing part and can be easily replaced.

Des weiteren sind Anlageabschnitte 7 an der verriegelbaren Werkzeughälfte 2 für eine definierte Anlage der verriegelbaren Werkzeughälfte 2 an dem Maschinenrahmen 1 vorgesehen. Dadurch nimmt die verriegelbare Werkzeughälfte 2 stets eine definierte Lage ein, die durch Spannkräfte des Verriegelungsmechanismus 4 nicht oder nur gering geändert wird. Alternativ können die Anlageabschnitte 7 am Maschinenrahmen 1 vorgesehen sein.Furthermore, abutment sections 7 are provided on the lockable tool half 2 for a defined abutment of the lockable tool half 2 on the machine frame 1. As a result, the lockable tool half 2 always assumes a defined position, which is not or only slightly changed by clamping forces of the locking mechanism 4. Alternatively, the abutment sections 7 may be provided on the machine frame 1.

Auch wenn dies nicht in den Zeichnungen dargestellt ist, können die Werkzeughälften 2, 3 über eine Zentriervorrichtung zum Zentrieren der verriegelbaren Werkzeughälfte 2 an der anderen Werkzeughälfte 3 verfügen. Die Zentriervorrichtung kann durch Vorsprünge gebildet sein, die an einer Werkzeughälfte 2, 3 vorgesehen sind und in entsprechende Ausnehmungen in der anderer Werkzeughälfte 2, 3 geführt werden. Die Werkzeughälften 2, 3 können auch jeweils mit dem Maschinenrahmen 1 zentriert werden.Although not shown in the drawings, the tool halves 2, 3 may have a centering device for centering the lockable tool half 2 on the other tool half 3. The centering device can be formed by projections which are provided on a tool half 2, 3 and are guided into corresponding recesses in the other tool half 2, 3. The tool halves 2, 3 can also be centered respectively with the machine frame 1.

Auch wenn dies in den Zeichnungen nicht dargestellt ist, hat die verriegelbare Werkzeughälfte 2 elektrische Anschlüsse und Fluidanschlüsse, die mit entsprechenden elektrischen Anschlüsse und Fluidanschlüssen des Maschinenrahmens 1 verbunden sind, wenn die verriegelbare Werkzeughälfte 2 an dem Maschinenrahmen 1 verriegelt ist. An der Schnittstelle der elektrischen Anschlüsse und der Fluidanschlüssen sind geeignete Dichtungen vorgesehen.Although not shown in the drawings, the lockable tool half 2 has electrical terminals and fluid ports connected to corresponding electrical terminals and fluid ports of the machine frame 1 when the lockable tool half 2 is locked to the machine frame 1. At the interface of the electrical connections and the fluid connections suitable seals are provided.

Bei dem dargestellten Ausführungsbeispiel wird der Bolzen 6 durch den Pneumatikzylinder 8 betätigt. Dadurch kann in vorteilhafter Weise eine große und dauerhafte Verriegelungskraft bereit gestellt werden. Alternativ kann auch ein Hydraulikzylinder verwendet werden. Zur Entriegelung ist es erforderlich, dass der Zylinder 8 angesteuert wird und mit einem gewissen Kraftaufwand aus der Aufnahme 5 heraus gezogen wird. Das Lösen der Verriegelungskraft kann demnach nur aktiv erfolgen, indem der Zylinder 8 angesteuert wird. Im drucklosen Zustand stellt der Zylinder 8 zwar keine Verriegelungskraft bereit, die verriegelbare Werkzeughälfte 2 kann jedoch nicht herunter fallen.In the illustrated embodiment, the bolt 6 is actuated by the pneumatic cylinder 8. As a result, a large and permanent locking force can be provided in an advantageous manner. Alternatively, a hydraulic cylinder can be used. To unlock, it is necessary that the cylinder 8 is driven and pulled out of the receptacle 5 with a certain force. The release of the locking force can therefore only be active by the cylinder 8 is driven. Although the cylinder 8 provides no locking force in the unpressurized state, the lockable tool half 2 can not fall down.

Der Betrieb des Verriegelungsmechanismus 4, der zum Beispiel bei einem Werkzeugwechsel durchgeführt wird, ist folgendermaßen:

  • Zunächst werden die Werkzeughälften 2, 3 in der Siegelvorrichtung 21 in ihren abgesenkten Positionen angeordnet. Dabei befindet sich die Aufnahme 5 der verriegelbaren Werkzeughälfte 2 lotrecht unter der Hubstrecke des Bolzens 6. Dabei kann die Zentriervorrichtung verwendet werden, um die verriegelbare Werkzeughälfte 2 an die andere Werkzeughälfte 3 zu zentrieren.
  • Im nächsten Schritt werden beide Werkzeughälften 2, 3 durch das Hubwerk 9 angehoben, bis der Bolzen 6 der Aufnahme 5 zugewandt ist. Daraufhin wird der Bolzen 6 durch Ansteuern des Pneumatikzylinders 8 in die Aufnahme 5 eingeführt, um die verriegelbare Werkzeughälfte 2 an dem Maschinenrahmen 1 zu verriegeln und/oder zu zentrieren. Danach kann die andere Werkzeughälfte 3 durch das Hubwerk 9 abgesenkt werden.
The operation of the locking mechanism 4, which is performed, for example, at a tool change, is as follows:
  • First, the tool halves 2, 3 are arranged in the sealing device 21 in their lowered positions. In this case, the receptacle 5 of the lockable mold half 2 is perpendicular to the stroke of the bolt 6. In this case, the centering device can be used to center the lockable mold half 2 to the other mold half 3.
  • In the next step, both tool halves 2, 3 are lifted by the hoist 9 until the pin 6 faces the receptacle 5. Then, the bolt 6 is introduced by driving the pneumatic cylinder 8 in the receptacle 5 to lock the lockable mold half 2 on the machine frame 1 and / or center. Thereafter, the other tool half 3 can be lowered by the hoist 9.

Die Entnahme der verriegelbaren Werkzeughälfte 2 geschieht in der umgekehrten Reihenfolge. Dabei wird die andere Werkzeughälfte 3 durch das Hubwerk an die verriegelbare Werkzeughälfte 2 angehoben. Danach erfolgt die Freigabe zur Entriegelung, so dass der Bolzen 6 aus der Aufnahme 5 heraus bewegt werden kann. Die verriegelbare Werkzeughälfte 2 liegt nun mittels ihres Gewichtes auf der anderen Werkzeughälfte 3 auf. Das Hubwerk wird mit beiden Werkzeughälften 2, 3 abgesenkt, und die Werkzeughälften 2, 3 können aus der Siegelvorrichtung 21 entnommen werden.The removal of the lockable tool half 2 is done in the reverse order. This is the other tool half 3 raised by the hoist to the lockable mold half 2. Thereafter, the release takes place for unlocking, so that the bolt 6 can be moved out of the receptacle 5 out. The lockable tool half 2 is now by means of its weight on the other tool half 3. The hoist is lowered with both tool halves 2, 3, and the tool halves 2, 3 can be removed from the sealing device 21.

Die vorliegende Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt, sondern es sind viele Abwandlungen denkbar.The present invention is not limited to the illustrated embodiment, but many modifications are conceivable.

Die Siegelvorrichtung 21 kann dahingehend abgewandelt werden, dass die verriegelbare Werkzeughälfte das Siegelwerkzeugunterteil ist und dass die andere Werkzeughälfte das Siegelwerkzeugoberteil ist.The sealing device 21 may be modified such that the lockable tool half is the sealing tool lower part and that the other tool half is the sealing tool upper part.

Im dargestellten Ausführungsbeispiel wird der Bolzen 6 durch einen Pneumatikzylinder 8 betätigt. Anstelle des Pneumatikzylinders 8 kann ein Hydraulikzylinder oder ein Federmechanismus verwendet werden.In the illustrated embodiment, the bolt 6 is actuated by a pneumatic cylinder 8. Instead of the pneumatic cylinder 8, a hydraulic cylinder or a spring mechanism can be used.

Zum Schutz gegen ein unbeabsichtigtes Lösen und Herabfallen der verriegelbaren Werkzeughälfte 2 können weitere steuerungstechnische, pneumatische oder mechanische Maßnahmen vorgesehen werden, wobei eine Freigabe zur Entriegelung nur bei bestimmten Bedingungen erfolgt. Eine derartige Bedingung kann sein, dass die andere Werkzeughälfte 3 durch das Hubwerk 9 bis unter die verriegelbare Werkzeughälfte 2 angehoben wurde. Eine weitere Bedingung kann sein, dass eine Abdeckung des Maschinenrahmens 1 geschlossen ist.To protect against unintentional loosening and falling of the lockable mold half 2 further control technology, pneumatic or mechanical measures can be provided, wherein a release for unlocking takes place only under certain conditions. Such a condition may be that the other tool half 3 has been lifted by the hoist 9 to below the lockable mold half 2. Another condition may be that a cover of the machine frame 1 is closed.

Der Schutzumfang beschränkt sich nicht auf das dargestellte Ausführungsbeispiel, sondern er umfasst weitere Änderungen und Abwandlungen, sofern diese innerhalb des durch die beigefügten Ansprüche definierten Umfangs fallen.The scope of protection is not limited to the illustrated embodiment, but it includes other changes and modifications, provided that they fall within the scope defined by the appended claims.

Claims (13)

  1. A packaging machine with a machine frame (1) and tool halves (2,3), wherein at least one (2) of the tool halves can be locked on the machine frame (1) by a single locking mechanism (4) and the other tool half (3) can move in a lifting direction towards the lockable tool half (2),
    wherein the lockable tool half (2) is a sealing tool upper part and the other tool half (3) is a sealing tool lower part, and
    wherein the locking mechanism (4) has the following:
    a socket (5) which is formed in the lockable tool half (2),
    a single lock (6) which is provided on the machine frame (1) and which can be inserted into the socket (5) of the lockable tool half (2) so as to lock and/or centre the lockable tool half (2) on the machine frame (1) .
  2. A packaging machine according to Claim 1, wherein the lock (6) is in the form of a bolt (6).
  3. A packaging machine according to Claim 1 or 2, wherein the socket (5) is arranged substantially at the centre of gravity of the lockable tool half (2).
  4. A packaging machine according to any one of the preceding Claims, wherein one end (6a) of the lock (6), which is to be inserted into the socket (5), is conically formed.
  5. A packaging machine according to any one of the preceding Claims, wherein the socket (5) has a bevelled circumferential surface (5a).
  6. A packaging machine according to any one of the preceding Claims, wherein the socket (5) is formed by an eyelet.
  7. A packaging machine according to any one of the preceding Claims, wherein the socket (5) is mounted replaceably on the lockable tool half (2) and is formed from a material which is softer than the material of the lock (6).
  8. A packaging machine according to any one of the preceding Claims, additionally with mating portions (7) on the lockable tool half (2) and/or on the machine frame (1) for definitive application of the lockable tool half (2) against the machine frame (1).
  9. A packaging machine according to any one of the preceding Claims, additionally with a centering device for centering the lockable tool half (2) on the other tool half (3).
  10. A packaging machine according to any one of the preceding Claims, wherein the lockable tool half (2) has electrical connections and fluid connections which are connected to corresponding electrical connections and fluid connections of the machine frame (1) when the lockable tool half (2) is locked on the machine frame (1).
  11. A packaging machine according to any one of the preceding Claims, wherein the lock (6) is actuated by a pneumatic or hydraulic cylinder (8) .
  12. A packaging machine according to any one of the preceding Claims, additionally with a lifting mechanism (9) which moves the other tool half (3) in the lifting direction towards the lockable tool half (2).
  13. A tool installation method for a packaging machine according to any one of the preceding Claims, with the following steps:
    arranging the two tool halves (2,3) in the machine frame (1) in its lowered position;
    lifting the tool halves (2,3) until the lock (6) is facing the socket (5);
    inserting the lock (6) into the socket (5) so as lock and/or centre the lockable tool half (2) on the machine frame (1).
EP09008819A 2008-07-29 2009-07-06 Packaging machine with 1-point tool locking Not-in-force EP2149501B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008035223A DE102008035223A1 (en) 2008-07-29 2008-07-29 Packaging machine with single-point tool locking

Publications (2)

Publication Number Publication Date
EP2149501A1 EP2149501A1 (en) 2010-02-03
EP2149501B1 true EP2149501B1 (en) 2011-01-19

Family

ID=41213494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09008819A Not-in-force EP2149501B1 (en) 2008-07-29 2009-07-06 Packaging machine with 1-point tool locking

Country Status (5)

Country Link
EP (1) EP2149501B1 (en)
CN (1) CN101638155B (en)
AT (1) ATE495979T1 (en)
DE (2) DE102008035223A1 (en)
ES (1) ES2361113T3 (en)

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WO2024132445A1 (en) 2022-12-23 2024-06-27 Weber Food Technology Gmbh Work station for a packaging machine and method for removing a lower tool from a work station of a packaging machine
DE102023109540A1 (en) 2022-12-23 2024-07-04 Weber Food Technology Gmbh Work station for a packaging machine and method for removing a lower tool from a work station of a packaging machine

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DE102011101053B4 (en) * 2011-05-10 2014-06-05 Multivac Sepp Haggenmüller Gmbh & Co. Kg Workstation for a packaging machine and method for tool change
DE202016002735U1 (en) 2016-04-27 2016-06-02 Entrhal Medical Gmbh Sealing device with exchange unit

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Publication number Priority date Publication date Assignee Title
WO2024132445A1 (en) 2022-12-23 2024-06-27 Weber Food Technology Gmbh Work station for a packaging machine and method for removing a lower tool from a work station of a packaging machine
DE102023109540A1 (en) 2022-12-23 2024-07-04 Weber Food Technology Gmbh Work station for a packaging machine and method for removing a lower tool from a work station of a packaging machine

Also Published As

Publication number Publication date
ATE495979T1 (en) 2011-02-15
EP2149501A1 (en) 2010-02-03
ES2361113T3 (en) 2011-06-14
CN101638155B (en) 2012-02-29
CN101638155A (en) 2010-02-03
DE502009000310D1 (en) 2011-03-03
DE102008035223A1 (en) 2010-02-04

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