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EP1598276B1 - Packaging machine and method for cutting packages. - Google Patents

Packaging machine and method for cutting packages. Download PDF

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Publication number
EP1598276B1
EP1598276B1 EP20050009437 EP05009437A EP1598276B1 EP 1598276 B1 EP1598276 B1 EP 1598276B1 EP 20050009437 EP20050009437 EP 20050009437 EP 05009437 A EP05009437 A EP 05009437A EP 1598276 B1 EP1598276 B1 EP 1598276B1
Authority
EP
European Patent Office
Prior art keywords
cutting
web
film
packaging machine
cut
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.)
Expired - Lifetime
Application number
EP20050009437
Other languages
German (de)
French (fr)
Other versions
EP1598276A1 (en
Inventor
Johann Natterer
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
Original Assignee
Multivac Sepp Haggenmueller GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Multivac Sepp Haggenmueller GmbH and Co KG filed Critical Multivac Sepp Haggenmueller GmbH and Co KG
Publication of EP1598276A1 publication Critical patent/EP1598276A1/en
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Publication of EP1598276B1 publication Critical patent/EP1598276B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/04Processes
    • Y10T83/0524Plural cutting steps
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/647With means to convey work relative to tool station
    • Y10T83/6476Including means to move work from one tool station to another
    • Y10T83/6489Slitter station
    • Y10T83/6491And transverse cutter station

Definitions

  • the invention relates to a packaging machine and a method for cutting packages.
  • a packaging machine according to the preamble of claim 1 is known. This has a cross-cutting device and subsequently a longitudinal cutting device.
  • the slitter cuts the packages along a path by means of a rotating knife. This facility requires regular maintenance and adjustments. Furthermore, the service life of the knives is limited and the cut quality for high-quality packings is not sufficient. The slitter runs continuously during the advancement of the packages.
  • a packaging machine is known in which the separation of the packs also takes place in two steps. First, a web is cross-cut to subsequently cut out strips which are separated into a single device in another device. The strips must be re-detected after cutting and handed over to a subsequent cutting station. Each pack is then cut off the strip one at a time, so performance is limited.
  • US Pat. No. 4,565,052 discloses a packaging machine for producing packs from a film web having an output-side cutting station which has a cross-cutting knife and a longitudinal cutting knife whose corners are connected to each other via punching and intermittently cut intermittently when the transport device of the machine is between two feeds stationary.
  • the cross section is at the same time a section of the front side of the pack following in the next cycle.
  • a device for removing packages from a film web in which the contour of the packages is cut in one operation.
  • the device consists of a complex unit with a press with high forces and a cutting tool that individually to the
  • the object is achieved by a packaging machine according to claim 1 and by a method for cutting packages according to claim 9.
  • the invention has the particular advantage that the acquisition of the cut packages from above can be done with high precision. Furthermore, by separating the operations with respect to the first and second cutting, higher flexibility is possible in certain applications.
  • the packaging machine has on an input side a film roll with a first film web 1, which is gripped by a transport device 2 on both edges and transported to an exit side.
  • a forming station 3 molded containers 4 are produced from the film web 1.
  • a plurality of containers 4 are arranged in a row across the width of the film web 1.
  • a filling station 5 is provided, in which the containers 4 are filled with products 6. This is followed by a feed for a second packaging web 7, with which the containers 4 are covered and sealed in a sealing station 8.
  • a first cutting station 9 in which the film webs containing the containers are cut in a first direction on two opposite sides of the containers.
  • a second cutting station 10 is provided, in which the film web 1 is cut in a second direction on opposite sides of the containers.
  • a transport device 11 is provided which conveys the completely separate containers coming from the second cutting station 10 to a transfer station (not shown).
  • the transport means 2 is adapted to intermittently feed the film web, wherein the period of time for which the transport means is stationary in a working cycle corresponds at least to the time required for the station with the longest working time for the operation.
  • the first cutting station 9 is formed as a cross cutter, which is preferably a punch and a transversely to the transport direction 12 extending and arranged below the film web punching knife 13, the film web 1 against a above the Film web 1 located abutment presses and punched it.
  • the punching knife 13 is located above the film web and the abutment below.
  • a control is provided, the intermittently the first cutting station 9 in accordance with the cyclic feed of the transport device 2 intermittently operates such that the cut of the film web transversely to the transport direction 12 then takes place when the transport device is stationary between two feeds.
  • the punching blade 13 of the first cutting station 9 is formed such that it intersects star-shaped cutouts 15 between the containers 4, which have inwardly pointing curves 15a, which later, as can be seen in Fig. 5, form rounded corners 4c of the cut-out containers.
  • the punching knife 13 may be formed in a first example so that between the containers 4 line-shaped incisions 16 are generated transversely to the transport direction 12.
  • the punching knife 13 may be formed in a second example so that 15 strip-shaped cutouts 17 are generated between the star-shaped cutouts.
  • the punching knife 13 also does not extend over the entire width of the film web 1, so that at the edges of the film web 1 each a strip 18 remains. This serves for further transport of the film web.
  • the second cutting station 10 is, as can be seen from FIGS. 1 to 3 and 7, formed as a longitudinal cutter, preferably as a punch, which has a plurality of extending with its cutting edge in the transport direction 12 and below the film web 1
  • Punching blades 14 which press against a located above the film web 1 abutment 14a and so punch through the film web.
  • the distance B between the punching blades 14 is greater than the width of the wells 4a of the molded container 4, as shown in Fig. 5, so that after complete separation, a container 4 is generated with an edge 4b having an overall width B.
  • the number of punching blades is 1 larger than the number of containers 4, which are transverse to the transport direction 12 in a transverse row next to each other.
  • the length of the punching knife corresponds to the length L of the container shown in Fig. 5.
  • these are designed so that linear cuts 19 are generated in the transporting direction 12.
  • the distance between the two outer punching blades from each other is smaller than the width of the film web 1 and as large as the length of the punching blade 13 of the first cutting station, so that the cut edge portions 18 remain, which form waste.
  • control which operates the second cutting station 10 intermittently in tandem in accordance with the timing of the transport means, so that the cutting in the transport direction takes place when the transport device is stationary between two feeds and, when the cut is performed, punching knife and abutment be moved away from the film web, so that the access to the container from above is possible.
  • the film web 1 is first cyclically fed via the transport device 2 of the forming station 3.
  • the containers 4 are deep-drawn.
  • the containers are then filled in the filling station 5 with products 6 and sealed in the sealing station 8 with the top film 7 and sealed.
  • the containers thus connected are transported in cycles via the transport device 2 and fed to the first cutting station 9, which intermittently intermittently performs the cut shown in FIG. 2 in a direction transverse to the transport direction 12, while the respective transverse rows of containers in front of and behind the cutting station 9 stand still. Since the edge portions 18 remain, the film web 1 can be further grasped at these and transported on.
  • the punching knives 14 are actuated there and a multiplicity of longitudinal cuts 19 are produced, which open into the star-shaped cutouts 15 and thus completely separate the containers 4 from each other.
  • the punching blade 14 and the abutment 14a are moved away from the film web, so that the isolated containers, while they are transported on the conveyor 11, are freely accessible from above. This allows a takeover for further processing with high precision, since the containers have a defined distance from each other.
  • the cut-out container has rounded corners 4 c, the rounding is generated by the star-shaped cutouts 15. Between a rounded corner 4c and a longitudinal side 4d of the container there is a small corner 4e, which arises because the distance of the punching blades 14 of the second cutting station 10 does not exactly match the rounding of the star-shaped portion 12 punched out by the first cutting station. is tuned.
  • the corner can be used, for example, as an aid for removing the upper film 7 during later opening of the container 4.
  • the containers 4 ', 4' ' are formed in the upper part without cutting waste on their short sides, while the containers 4 and 4' '' are formed in the lower part with a cutting waste on the short sides. This comes about by punching out the strips 17 in the first cutting station.
  • the punching blades are formed so that between and at the end of the longitudinal sides of the respective container 4 longitudinal strips 20 are punched out.
  • packages 40 as shown in Fig. 6, generated.
  • a package 40 differs from the package 4 shown in Fig. 5 in that due to the cutting out of the strips 20, the corner 4e is not present and the rounded corners 40c pass smoothly into the longitudinal sides 40d.
  • the selection of the geometry of the punching knife is made depending on the packaging material and quality requirements of the cutting edge of the container.
  • the first cutting station 90 is formed as a longitudinal cutting station, are generated in the longitudinal cuts 91 between the packages.
  • the second cutting station 100 is designed as a cross-cutting device in which one or more cuts are produced transversely to the transport direction 12. The fact that here the second cutting station 100 intermittently works intermittently, here is a precise acquisition, for example by means of a handling device from above possible.
  • the first cutting station 9, 90 need not necessarily be formed as a punch, but may also be a simple knife cut.
  • the geometries of the punching blades are adapted to the needs.
  • the star-shaped cut-out need not necessarily be present, then packages with sharp corners are created.
  • the slitter can also be designed as a shearing blade so that the longitudinal edges are cut without waste.
  • the cutting station formed as a cross cutter on a plurality of parallel cutting blades.
  • the invention is also not limited to a packaging machine in the form of a thermoforming machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

A transport device is adapted for conveying a web of film (1) in a fixed cycle way from an input side to an output side. The cutting devices (9,10) each cut intermittently in a fixed cycle way when the transport device is stationary between two advances. An independent claim is also included for a method for cutting packages in a packaging machine.

Description

Die Erfindung betrifft eine Verpackungsmaschine und ein Verfahren zum Schneiden von Packungen.The invention relates to a packaging machine and a method for cutting packages.

Aus der DE 38 41 250 A1 ist eine Verpackungsmaschine nach dem Oberbegriff des Patentanspruches 1 bekannt. Diese weist eine Querschneideeinrichtung und nachfolgend eine Längsschneideeinrichtung auf. Die Längsschneideeinrichtung schneidet die Packungen längs einer Bahn mittels eines rotierenden Messers. Diese Einrichtung erfordert regelmäßige Wartung und Einstellarbeiten. Ferner ist die Standzeit der Messer begrenzt und die Schnittqualität für hochwertige Packungen nicht ausreichend. Die Längsschneideeinrichtung läuft kontinuierlich während des Vorschubs der Packungen.From DE 38 41 250 A1 a packaging machine according to the preamble of claim 1 is known. This has a cross-cutting device and subsequently a longitudinal cutting device. The slitter cuts the packages along a path by means of a rotating knife. This facility requires regular maintenance and adjustments. Furthermore, the service life of the knives is limited and the cut quality for high-quality packings is not sufficient. The slitter runs continuously during the advancement of the packages.

Aus der DE 25 06 446 ist eine Verpackungsmaschine bekannt, bei der die Trennung der Packungen ebenfalls in zwei Schritten erfolgt. Zuerst wird eine Bahn quergeschnitten, um nachfolgend Streifen auszuschneiden, die in einer weiteren Vorrichtung in Einzelpackungen getrennt werden. Die Streifen müssen nach dem Ausschneiden neu erfaßt und an eine nachfolgende Schneidstation übergeben werden. Jede Packung wird dann einzeln vom Streifen abgeschnitten, daher ist die Leistung beschränkt.From DE 25 06 446 a packaging machine is known in which the separation of the packs also takes place in two steps. First, a web is cross-cut to subsequently cut out strips which are separated into a single device in another device. The strips must be re-detected after cutting and handed over to a subsequent cutting station. Each pack is then cut off the strip one at a time, so performance is limited.

Die US 4,565,052 offenbart eine Verpackungsmaschine zum Herstellen von Packungen aus einer Folienbahn mit einer ausgangsseitig angeordneten Schneidestation, die ein Querschneidemesser sowie ein Längsschneidemesser aufweist, deren Ecken über Stanzen miteinander verbunden sind, und die jeweils taktweise intermittierend schneiden, wenn die Transporteinrichtung der Maschine zwischen zwei Vorschüben stillsteht. Beim Schneiden werden gleichzeitig die Längsseiten einer Packung und deren hintere Querseite geschnitten, wobei der Querschnitt gleichzeitig ein Schnitt der Stirnseite der im nächsten Takt folgenden Packung ist.US Pat. No. 4,565,052 discloses a packaging machine for producing packs from a film web having an output-side cutting station which has a cross-cutting knife and a longitudinal cutting knife whose corners are connected to each other via punching and intermittently cut intermittently when the transport device of the machine is between two feeds stationary. When cutting the longitudinal sides of a pack and its rear transverse side are cut simultaneously, the cross section is at the same time a section of the front side of the pack following in the next cycle.

Aus der DE 31 18 946 A1 ist eine Vorrichtung zum Austrennen von Packungen aus einer Folienbahn vorgeschlagen, bei der die Kontur der Packungen in einem Arbeitsgang geschnitten wird. Die Vorrichtung besteht aus einer aufwendigen Einheit mit einer Presse mit hohen Kräften und einem Schnittwerkzeug, das individuell an dieFrom DE 31 18 946 A1 a device for removing packages from a film web is proposed, in which the contour of the packages is cut in one operation. The device consists of a complex unit with a press with high forces and a cutting tool that individually to the

Anzahl, Größe und Kontur der Packungen angepaßt ist. Die Ausbringung der Packungen aus der Vorrichtung ist umständlich.Number, size and contour of the packs is adjusted. The application of the packages from the device is cumbersome.

Es ist Aufgabe der Erfindung, eine Verpackungsmaschine und ein Verfahren zum Schneiden von Packungen bereitzustellen, mit der bzw. mit dem Packungen mit hoher Schnittqualität erzeugt werden, eine hohe Ausbringleistung erreicht wird und die Packungen für die Weiterverarbeitung leicht zugänglich bereitgestellt werden.It is an object of the invention to provide a packaging machine and a method for cutting packages, are produced with the or with the packages with high quality cut, a high output performance is achieved and the packages are provided for further processing easily accessible.

Die Aufgabe wird gelöst durch eine Verpackungsmaschine nach Anspruch 1 und durch ein Verfahren zum Schneiden von Verpackungen nach Anspruch 9.The object is achieved by a packaging machine according to claim 1 and by a method for cutting packages according to claim 9.

Die Erfindung weist insbesondere den Vorteil auf, daß die Übernahme der geschnittenen Packungen von oben mit hoher Präzision erfolgen kann. Ferner ist durch das Trennen der Arbeitsgänge im Hinblick auf die erste und die zweite Schneidung eine höhere Flexibilität bei bestimmten Anwendungen möglich.The invention has the particular advantage that the acquisition of the cut packages from above can be done with high precision. Furthermore, by separating the operations with respect to the first and second cutting, higher flexibility is possible in certain applications.

Weitere Merkmale und Zweckmäßigkeiten der Erfindung ergeben sich aus der Beschreibung von Ausführungsbeispielen anhand der Figuren.Other features and advantages of the invention will become apparent from the description of embodiments with reference to FIGS.

Von den Figuren zeigen:

Fig. 1
eine schematische Ansicht einer Verpackungsmaschine nach einer ersten Ausführungsform mit weggelassener vorderer Abdeckung;
Fig. 2
eine Draufsicht auf die Packungsbahn der Verpackungsmaschine nach Fig. 1 im Bereich der Quer- und Längsschneidung nach einer ersten Ausführungsform;
Fig. 3
eine Draufsicht auf die Packungsbahn nach einer zweiten Ausführungsform;
Fig. 4
eine Draufsicht auf die Packungsbahn nach einer dritten Ausführungsform;
Fig. 5
eine Draufsicht auf eine Packung, die mit der Ausführungsform nach Fig. 2 erzeugt ist;
Fig. 6
eine Draufsicht auf eine Packung, die nach der Ausführungsform von Fig. 3 erzeugt ist; und
Fig. 7
einen Schnitt entlang der Linie A-A der Schneidstation gemäß Fig. 3.
From the figures show:
Fig. 1
a schematic view of a packaging machine according to a first embodiment with omitted front cover;
Fig. 2
a plan view of the packaging web of the packaging machine of Figure 1 in the region of the transverse and Längsschneidung according to a first embodiment.
Fig. 3
a plan view of the package web according to a second embodiment;
Fig. 4
a plan view of the package web according to a third embodiment;
Fig. 5
a plan view of a package, which is produced with the embodiment of Figure 2;
Fig. 6
a plan view of a package that is produced according to the embodiment of Figure 3; and
Fig. 7
a section along the line AA of the cutting station of FIG. 3rd

Wie aus Fig. 1 ersichtlich ist, weist die Verpackungsmaschine an einer Eingangsseite eine Folienrolle mit einer ersten Folienbahn 1, die von einer Transporteinrichtung 2 an beiden Rändern ergriffen wird und zu einer Ausgangsseite transportiert wird, auf. In einer Formstation 3 werden aus der Folienbahn 1 geformte Behälter 4 erzeugt. Wie aus Fig. 2 und 3 ersichtlich ist, liegen mehrere Behälter 4 in einer Reihe über die Breite der Folienbahn 1. Optional ist eine Befüllstation 5 vorgesehen, in der die Behälter 4 mit Produkten 6 befüllt werden. Daran anschließend befindet sich eine Zuführung für eine zweite Verpackungsbahn 7, mit der die Behälter 4 abgedeckt und in einer Siegelstation 8 verschlossen werden. Es ist ferner eine erste Schneidstation 9 vorgesehen, in der die die Behälter enthaltende Folienbahn in einer ersten Richtung an zwei gegenüberliegenden Seiten der Behälter geschnitten werden. In Transportrichtung 12 stromabwärts von der ersten Schneidstation 9 ist eine zweite Schneidstation 10 vorgesehen, in der die Folienbahn 1 in einer zweiten Richtung an gegenüberliegenden Seiten der Behälter geschnitten wird. Nach der zweiten Schneidstation 10 ist eine Transporteinrichtung 11 vorgesehen, die die aus der zweiten Schneidstation 10 kommenden vollständig getrennten Behälter zu einer Übergabestation (nicht dargestellt) befördert. Die Transporteinrichtung 2 ist so ausgebildet, daß sie die Folienbahn taktweise vorschiebt, wobei die Zeitspanne, für die die Transporteinrichtung in einem Arbeitstakt stillsteht, wenigstens der Zeit entspricht, die die Station mit der längsten Arbeitszeit für den Arbeitsvorgang benötigt.As can be seen from FIG. 1, the packaging machine has on an input side a film roll with a first film web 1, which is gripped by a transport device 2 on both edges and transported to an exit side. In a forming station 3, molded containers 4 are produced from the film web 1. As can be seen from FIGS. 2 and 3, a plurality of containers 4 are arranged in a row across the width of the film web 1. Optionally, a filling station 5 is provided, in which the containers 4 are filled with products 6. This is followed by a feed for a second packaging web 7, with which the containers 4 are covered and sealed in a sealing station 8. There is further provided a first cutting station 9 in which the film webs containing the containers are cut in a first direction on two opposite sides of the containers. In the transport direction 12 downstream of the first cutting station 9, a second cutting station 10 is provided, in which the film web 1 is cut in a second direction on opposite sides of the containers. After the second cutting station 10, a transport device 11 is provided which conveys the completely separate containers coming from the second cutting station 10 to a transfer station (not shown). The transport means 2 is adapted to intermittently feed the film web, wherein the period of time for which the transport means is stationary in a working cycle corresponds at least to the time required for the station with the longest working time for the operation.

In dem in den Figuren 1 bis 3 gezeigten Ausführungsbeispielen ist die erste Schneidstation 9 als Querschneider ausgebildet, der bevorzugt eine Stanze ist und ein sich quer zur Transportrichtung 12 erstreckendes und unterhalb der Folienbahn angeordnetes Stanzmesser 13 aufweist, das die Folienbahn 1 gegen ein sich oberhalb der Folienbahn 1 befindliches Widerlager drückt und dabei durchstanzt. Es ist jedoch auch die umgekehrte Anordnung denkbar, bei der das Stanzmesser 13 sich oberhalb der Folienbahn befindet und das Widerlager unterhalb. Ferner ist eine Steuerung vorgesehen, die die erste Schneidstation 9 in Übereinstimmung mit dem taktweisen Vorschub der Transporteinrichtung 2 taktweise intermittierend derart betreibt, daß der Schnitt der Folienbahn quer zur Transportrichtung 12 dann erfolgt, wenn die Transporteinrichtung zwischen zwei Vorschüben stillsteht.In the embodiments shown in Figures 1 to 3, the first cutting station 9 is formed as a cross cutter, which is preferably a punch and a transversely to the transport direction 12 extending and arranged below the film web punching knife 13, the film web 1 against a above the Film web 1 located abutment presses and punched it. However, it is also the reverse arrangement conceivable in which the punching knife 13 is located above the film web and the abutment below. Further, a control is provided, the intermittently the first cutting station 9 in accordance with the cyclic feed of the transport device 2 intermittently operates such that the cut of the film web transversely to the transport direction 12 then takes place when the transport device is stationary between two feeds.

In einer ersten Ausführungsform der Geometrie des Stanzmessers 13, die in den Figuren 2 und 5 gezeigt ist, ist das Stanzmesser 13 der ersten Schneidstation 9 derart ausgebildet, daß es zwischen den Behältern 4 sternförmige Ausschnitte 15 schneidet, die nach innen zeigende Rundungen 15a aufweisen, welche später, wie aus Fig. 5 ersichtlich ist, gerundete Ecken 4c der ausgeschnittenen Behälter bilden. Wie aus der oberen Hälfte von Fig. 2 hervorgeht, kann das Stanzmesser 13 in einem ersten Beispiel so ausgebildet sein, daß zwischen den Behältern 4 linienförmige Einschnitte 16 quer zur Transportrichtung 12 erzeugt werden. Wie aus der unteren Hälfte von Fig. 2 ersichtlich ist, kann das Stanzmesser 13 in einem zweiten Beispiel so ausgebildet sein, daß zwischen den sternförmigen Ausschnitten 15 streifenförmige Ausschnitte 17 erzeugt werden. Das Stanzmesser 13 erstreckt sich ferner nicht über die gesamte Breite der Folienbahn 1, so daß an den Rändern der Folienbahn 1 jeweils ein Streifen 18 verbleibt. Dieser dient zum Weitertransport der Folienbahn.In a first embodiment of the geometry of the punching blade 13, which is shown in Figures 2 and 5, the punching blade 13 of the first cutting station 9 is formed such that it intersects star-shaped cutouts 15 between the containers 4, which have inwardly pointing curves 15a, which later, as can be seen in Fig. 5, form rounded corners 4c of the cut-out containers. As can be seen from the upper half of Fig. 2, the punching knife 13 may be formed in a first example so that between the containers 4 line-shaped incisions 16 are generated transversely to the transport direction 12. As can be seen from the lower half of Fig. 2, the punching knife 13 may be formed in a second example so that 15 strip-shaped cutouts 17 are generated between the star-shaped cutouts. The punching knife 13 also does not extend over the entire width of the film web 1, so that at the edges of the film web 1 each a strip 18 remains. This serves for further transport of the film web.

Die zweite Schneidstation 10 ist, wie aus Fig. 1 bis 3 und 7 ersichtlich ist, als Längsschneider, bevorzugt als Stanze, gebildet, die eine Mehrzahl von sich mit ihrer Schneide in Transportrichtung 12 erstreckenden und unterhalb der Folienbahn 1 angeordneten Stanzmessern 14 aufweist, die gegen ein oberhalb der Folienbahn 1 befindliches Widerlager 14a drücken und so die Folienbahn durchstanzen. Auch hier ist die umgekehrte Anordnung möglich, bei der sich die Stanzmesser 14 oberhalb der Folienbahn befinden und das Widerlager unterhalb. Der Abstand B zwischen den Stanzmessern 14 ist dabei größer als die Breite der Mulden 4a der geformten Behälter 4, wie in Fig. 5 gezeigt ist, so daß nach dem vollständigen Trennen ein Behälter 4 mit einem Rand 4b erzeugt wird, der eine Gesamtbreite B aufweist. Die Anzahl der Stanzmesser ist um 1 grö-ßer als die Anzahl der Behälter 4, die quer zur Transportrichtung 12 in einer Querreihe nebeneinander liegen. Die Länge der Stanzmesser entspricht der Länge L des in Fig. 5 dargestellten Behälters. In einer in Fig. 2 gezeigten ersten Ausführungsform der Geometrie der Stanzmesser 14 sind diese so ausgebildet, daß linienförmige Schnitte 19 in Transportrichtung 12 erzeugt werden. Der Abstand der zwei außen liegenden Stanzmessern voneinander ist kleiner als die Breite der Folienbahn 1 und so groß, wie die Länge des Stanzmessers 13 der ersten Schneidstation, so daß beim Schnitt Randabschnitte 18 verbleiben, die Abfall bilden.The second cutting station 10 is, as can be seen from FIGS. 1 to 3 and 7, formed as a longitudinal cutter, preferably as a punch, which has a plurality of extending with its cutting edge in the transport direction 12 and below the film web 1 Punching blades 14 which press against a located above the film web 1 abutment 14a and so punch through the film web. Again, the reverse arrangement is possible, in which the punching blade 14 are located above the film web and the abutment below. The distance B between the punching blades 14 is greater than the width of the wells 4a of the molded container 4, as shown in Fig. 5, so that after complete separation, a container 4 is generated with an edge 4b having an overall width B. , The number of punching blades is 1 larger than the number of containers 4, which are transverse to the transport direction 12 in a transverse row next to each other. The length of the punching knife corresponds to the length L of the container shown in Fig. 5. In a first embodiment of the geometry of the punching blades 14 shown in FIG. 2, these are designed so that linear cuts 19 are generated in the transporting direction 12. The distance between the two outer punching blades from each other is smaller than the width of the film web 1 and as large as the length of the punching blade 13 of the first cutting station, so that the cut edge portions 18 remain, which form waste.

Es ist ferner eine Steuerung vorgesehen, die die zweite Schneidstation 10 taktweise intermittierend in Übereinstimmung mit dem Takt der Transporteinrichtung betätigt, so daß das Schneiden in Transportrichtung dann erfolgt, wenn die Transporteinrichtung zwischen zwei Vorschüben stillsteht und, wenn der Schnitt durchgeführt ist, Stanzmesser und Widerlager von der Folienbahn wegbewegt werden, so daß der Zugriff auf die Behälter von oben möglich ist.There is further provided a control which operates the second cutting station 10 intermittently in tandem in accordance with the timing of the transport means, so that the cutting in the transport direction takes place when the transport device is stationary between two feeds and, when the cut is performed, punching knife and abutment be moved away from the film web, so that the access to the container from above is possible.

Im Betrieb wird zuerst die Folienbahn 1 über die Transporteinrichtung 2 der Formstation 3 taktweise zugeführt. In der Formstation 3 werden die Behälter 4 tiefgezogen. Optional werden dann die Behälter in der Befüllstation 5 mit Produkten 6 befüllt und in der Siegelstation 8 mit der Oberfolie 7 verschlossen und versiegelt. Die so zusammenhängenden Behälter werden über die Transporteinrichtung 2 taktweise weiter transportiert und der ersten Schneidstation 9 zugeführt, die taktweise intermittierend den in Fig. 2 gezeigten Schnitt in einer Richtung quer zur Transportrichtung 12 durchführt, während die jeweiligen Querreihen von Behältern vor und hinter der Schneidstation 9 stillstehen. Da die Randabschnitte 18 verbleiben, kann die Folienbahn 1 weiter an diesen ergriffen und weiter transportiert werden. Sobald eine Querreihe von Behältern in die zweite Schneidstation 10 gelangt, werden dort die Stanzmesser 14 betätigt und es wird eine Mehrzahl von Längsschnitten 19 erzeugt, die in die sternförmigen Ausstanzungen 15 münden und somit die Behälter 4 vollständig voneinander trennen.In operation, the film web 1 is first cyclically fed via the transport device 2 of the forming station 3. In the forming station 3, the containers 4 are deep-drawn. Optionally, the containers are then filled in the filling station 5 with products 6 and sealed in the sealing station 8 with the top film 7 and sealed. The containers thus connected are transported in cycles via the transport device 2 and fed to the first cutting station 9, which intermittently intermittently performs the cut shown in FIG. 2 in a direction transverse to the transport direction 12, while the respective transverse rows of containers in front of and behind the cutting station 9 stand still. Since the edge portions 18 remain, the film web 1 can be further grasped at these and transported on. As soon as a transverse row of containers reaches the second cutting station 10, the punching knives 14 are actuated there and a multiplicity of longitudinal cuts 19 are produced, which open into the star-shaped cutouts 15 and thus completely separate the containers 4 from each other.

Nach jedem Schnitt werden die Stanzmesser 14 und die Widerlager 14a von der Folienbahn weggefahren, so daß die vereinzelten Behälter, während sie auf der Transporteinrichtung 11 weitertransportiert werden, von oben frei zugänglich sind. Dies ermöglicht eine Übernahme zur Weiterverarbeitung mit hoher Präzision, da die Behälter einen definierten Abstand voneinander haben.After each cut, the punching blade 14 and the abutment 14a are moved away from the film web, so that the isolated containers, while they are transported on the conveyor 11, are freely accessible from above. This allows a takeover for further processing with high precision, since the containers have a defined distance from each other.

Wie in Fig. 5 dargestellt ist, weist der ausgeschnittene Behälter abgerundete Ecken 4c auf, deren Rundung durch die sternförmigen Ausschnitte 15 erzeugt ist. Zwischen einer abgerundeten Ecke 4c und einer Längsseite 4d des Behälters ist eine kleine Ecke 4e vorhanden, die dadurch entsteht, daß der Abstand der Stanzmesser 14 der zweiten Schneidstation 10 nicht exakt auf die Rundung des sternförmigen Abschnitts 12, der mittels der ersten Schneidstation ausgestanzt ist, abgestimmt ist. Die Ecke kann beispielsweise als Hilfe zum Abziehen der Oberfolie 7 beim späteren Öffnen des Behälters 4 eingesetzt werden.As shown in Fig. 5, the cut-out container has rounded corners 4 c, the rounding is generated by the star-shaped cutouts 15. Between a rounded corner 4c and a longitudinal side 4d of the container there is a small corner 4e, which arises because the distance of the punching blades 14 of the second cutting station 10 does not exactly match the rounding of the star-shaped portion 12 punched out by the first cutting station. is tuned. The corner can be used, for example, as an aid for removing the upper film 7 during later opening of the container 4.

Wie aus Fig. 2 ersichtlich ist, sind die Behälter 4', 4'' im oberen Teil ohne Schneidabfall an ihren kurzen Seiten gebildet, während die Behälter 4 und 4''' im unteren Teil mit einem Schneidabfall an den kurzen Seiten gebildet sind. Dieser kommt durch das Ausstanzen der Streifen 17 in der ersten Schneidstation zustande.As can be seen from Fig. 2, the containers 4 ', 4' 'are formed in the upper part without cutting waste on their short sides, while the containers 4 and 4' '' are formed in the lower part with a cutting waste on the short sides. This comes about by punching out the strips 17 in the first cutting station.

Bei der in Fig. 3 dargestellten zweiten Ausführungsform der Geometrie der Stanzmesser der zweiten Schneidstation 10 sind die Stanzmesser so ausgebildet, daß zwischen und am Ende der Längsseiten der jeweiligen Behälter 4 Längsstreifen 20 herausgestanzt werden. Damit werden Packungen 40, wie in Fig. 6 dargestellt, erzeugt. Eine Packung 40 unterscheidet sich von der in Fig. 5 dargestellten Packung 4 dadurch, daß aufgrund des Herausschneidens der Streifen 20 die Ecke 4e nicht vorhanden ist und die abgerundeten Ecken 40c stufenlos in die Längsseiten 40d übergehen.In the illustrated in Fig. 3 second embodiment of the geometry of the punching blade of the second cutting station 10, the punching blades are formed so that between and at the end of the longitudinal sides of the respective container 4 longitudinal strips 20 are punched out. Thus, packages 40, as shown in Fig. 6, generated. A package 40 differs from the package 4 shown in Fig. 5 in that due to the cutting out of the strips 20, the corner 4e is not present and the rounded corners 40c pass smoothly into the longitudinal sides 40d.

Die Auswahl der Geometrie der Stanzmesser erfolgt je nach Verpackungsmaterial und Qualitätsanforderungen an die Schnittkante des Behälters.The selection of the geometry of the punching knife is made depending on the packaging material and quality requirements of the cutting edge of the container.

In einer abgewandelten Ausführungsform der Verpackungsmaschine, die in Draufsicht schematisch in Fig. 4 dargestellt ist, ist die erste Schneidstation 90 als Längsschneidstation ausgebildet, in der Längsschnitte 91 zwischen den Packungen erzeugt werden. Die zweite Schneidstation 100 ist als Querschneideinrichtung ausgebildet, in der ein oder mehrere Schnitte quer zur Transportrichtung 12 erzeugt werden. Dadurch, daß hier die zweite Schneidstation 100 taktweise intermittierend arbeitet, ist auch hier eine präzise Übernahme, beispielsweise mittels eines Handhabungsgeräts von oben möglich.In a modified embodiment of the packaging machine, which is shown schematically in plan view in Fig. 4, the first cutting station 90 is formed as a longitudinal cutting station, are generated in the longitudinal cuts 91 between the packages. The second cutting station 100 is designed as a cross-cutting device in which one or more cuts are produced transversely to the transport direction 12. The fact that here the second cutting station 100 intermittently works intermittently, here is a precise acquisition, for example by means of a handling device from above possible.

Abwandlungen der zuvor beschriebenen Ausführungsformen sind möglich. Zum Beispiel muß die erste Schneidstation 9, 90 nicht unbedingt als Stanze ausgebildet sein, sondern kann auch eine einfache Messerschneidung sein. Die Geometrien der Stanzmesser sind dem Bedarf angepaßt. Die sternförmige Ausstanzung muß nicht notwendigerweise vorhanden sein, dann werden Packungen mit spitzen Ecken erzeugt.Modifications of the embodiments described above are possible. For example, the first cutting station 9, 90 need not necessarily be formed as a punch, but may also be a simple knife cut. The geometries of the punching blades are adapted to the needs. The star-shaped cut-out need not necessarily be present, then packages with sharp corners are created.

Der Längsschneider kann auch als Schermesser auch so ausgebildet sein, so daß die Längskanten abfallfrei geschnitten werden.The slitter can also be designed as a shearing blade so that the longitudinal edges are cut without waste.

Es ist auch möglich, mehrere Behälter in Transportrichtung 12 hintereinander gleichzeitig tiefzuziehen, zu befüllen, zu versiegeln und zu schneiden. In diesem Fall weist die als Querschneider ausgebildete Schneidstation eine Mehrzahl von parallelen Schneidmessern auf.It is also possible to deep draw, fill, seal and cut a plurality of containers in the transport direction 12 at a time. In this case, the cutting station formed as a cross cutter on a plurality of parallel cutting blades.

Die Erfindung ist ferner auch nicht auf eine Verpackungsmaschine in Form einer Tiefziehmaschine beschränkt.The invention is also not limited to a packaging machine in the form of a thermoforming machine.

Claims (15)

  1. Packaging machine for producing packages from a web of film (1) with
    a transport device (2) for transporting the web of film (1) in a clocked way from an input side to an output side,
    a first cutting station (9) for creating a first cut in a first direction on the web of film,
    a separate second cutting station (10) arranged in a spatial distance behind the first cutting station in the transport direction (12) for creating a second cut in a second direction on the web of film;
    characterised in that the first cutting station (9) and the second cutting station (10) each cut intermittently in a clocked way when the transport device (2) is stationary between two advances.
  2. Packaging machine for producing packages from a web of film (1) according to claim 1, wherein the second cutting station (10) is formed as a punch.
  3. Packaging machine according to any one of claims 1 or 2, wherein the second cutting station (10) is a longitudinal cutting device cutting the web of film (1) in transport direction (12).
  4. Packaging machine according to any one of claims 1 to 3, wherein the first cutting station (9) is a transverse cutting device cutting the web of film (1) transverse to the transport direction (12).
  5. Packaging machine according to any one of claims 1 to 4, wherein at least one of the cutting devices (9, 10) is formed such that it creates curvatures at the package corners (4c).
  6. Packaging machine according to any one of claims 1 to 5, wherein at least one of the cutting stations (9, 10) is formed such that it cuts strips (17, 19) from the web of film (1).
  7. Packaging machine according to any one of claims 1 to 6, wherein one of the cutting stations (9, 10) is a longitudinal cutting device cutting the longitudinal edges of the web of film waste-free.
  8. Packaging machine according to any one of claims 1 to 7, wherein the packaging machine is a deep-drawing machine.
  9. Method for cutting packages in a packaging machine in which the packages are produced from a web of film (1) which is transported from an input side to an output side of the packaging machine in a clocked way, comprising the steps of:
    creating a first cut in a first direction on the web of film with a first cutting station (9),
    subsequently creating a second cut in a second direction on the web of film with a separate second cutting station (10) arranged spatially behind the first cutting station (9) in the transport direction (12),
    characterised in that creating of the first cut and of the second cut is each performed intermittently in a clocked way when the web of film is stationary between two advances.
  10. Method for cutting packages in a packaging machine according to claim 9, wherein the second cut is created by means of a punch (10).
  11. Method according to any one of claims 9 or 10, wherein the second cut is performed in the longitudinal direction (12) of the web of film.
  12. Method according to any one of claims 9 to 11, wherein the first cut is performed in a direction transverse to the web of film.
  13. Method according to any one of claims 9 to 12, wherein in at least one of the cuts curvatures are created at the package corners (4c).
  14. Method according to any one of claims 9 to 13, wherein in at least one of the cuts strips (17, 19; 18, 20) are cut out.
  15. Method according to any one of claims 9 to 14, wherein the cutting of the longitudinal edges is performed waste-free.
EP20050009437 2004-05-17 2005-04-29 Packaging machine and method for cutting packages. Expired - Lifetime EP1598276B1 (en)

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DE102004024358 2004-05-17
DE200410024358 DE102004024358A1 (en) 2004-05-17 2004-05-17 Packaging machine and method for cutting packages

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EP (1) EP1598276B1 (en)
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AT (1) ATE358054T1 (en)
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EP1598276A1 (en) 2005-11-23
DE502005000514D1 (en) 2007-05-10
DE102004024358A1 (en) 2005-12-15
JP2005330010A (en) 2005-12-02
DK1598276T3 (en) 2007-07-30
US7896792B2 (en) 2011-03-01
ATE358054T1 (en) 2007-04-15
US20050252351A1 (en) 2005-11-17
ES2285600T3 (en) 2007-11-16

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