EP3354582B1 - Labelling machine - Google Patents

Labelling machine Download PDF

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Publication number
EP3354582B1
EP3354582B1 EP17153481.1A EP17153481A EP3354582B1 EP 3354582 B1 EP3354582 B1 EP 3354582B1 EP 17153481 A EP17153481 A EP 17153481A EP 3354582 B1 EP3354582 B1 EP 3354582B1
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EP
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Prior art keywords
label
conveyor
pressure
products
labelling machine
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EP17153481.1A
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German (de)
French (fr)
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EP3354582A1 (en
Inventor
Timo Reimann
Lars Rimkeit
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Els - European Labelling System & Co KG GmbH
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Els - European Labelling System & Co KG GmbH
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Priority to EP17153481.1A priority Critical patent/EP3354582B1/en
Publication of EP3354582A1 publication Critical patent/EP3354582A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C1/00—Labelling flat essentially-rigid surfaces
    • B65C1/02—Affixing labels to one flat surface of articles, e.g. of packages, of flat bands
    • B65C1/021—Affixing labels to one flat surface of articles, e.g. of packages, of flat bands the label being applied by movement of the labelling head towards the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/26—Devices for applying labels
    • B65C9/28—Air-blast devices

Definitions

  • the invention relates to a labeling machine of the type described in the preamble of claim 1, including a product conveyor for transporting products to be labeled, a label conveyor for feeding self-adhesive labels into respective labeling positions relative to the products on the product conveyor, and at least one movable in one Space between conveying elements of the label conveyor arranged pressure element for lifting the labels from the label conveyor and for pressing them against respective label receiving surfaces of the products.
  • a labeling machine of this type is out U.S. 2004/250960 A1 known.
  • Out of JP S61 164936 A a labeling machine with air blast functionality is known.
  • the products to be labeled can be food packaging, for example, which is produced in a packaging machine by thermoforming a film, filled with contents such as sausage slices or the like, and then sealed.
  • the label receiving surface is often formed by the bottom surface of the packaging container.
  • the label conveyor is arranged below the product conveyor in such a way that it transports the labels in a direction transverse to the transport direction of the product conveyor.
  • the labels are then during each conveying cycle of the product conveyor is timely fed onto the label conveyor by means of a label dispenser arranged at one end of the label conveyor and fed into a position in which each label is located under the label receiving surface of the associated packaging container.
  • the labels are then pressed against the bottom surface of the respective packaging container with the aid of the pressure element.
  • the packaging containers are usually arranged in several parallel lanes on the product conveyor, so that the pressure elements simultaneously press several labels against the bottom surfaces of the packaging containers during each labeling process.
  • individual packaging containers were not filled with a product due to an error in the previous packaging process, but remained empty.
  • there is no counter-pressure required for the pressure element when labeling This may result in the label failing to stick to the bottom surface of the packaging container, or falling off again and then falling back onto the label conveyor, interfering with the further work flow.
  • Similar problems can generally also arise in cases where for some reason the label receiving surfaces of the products are not at the same level.
  • the object of the invention is to create a labeling machine that offers greater functional reliability when sticking the labels to the individual products.
  • the invention allows an additional pressure force to be exerted on the label during the labeling process with the aid of the compressed air blast from the nozzles, so that the label is securely attached to the label receiving surface even if there is insufficient counter-pressure. Reliable sticking of the label to the label receiving surface is possible in this way even if the label receiving surface is not in its desired position and thus even with maximum stroke of the pressure element there is still a gap between the pressure element and the label supported on it on the one hand and the label receiving surface on the other hand . This gap can be bridged by the blast of compressed air, so that the label is "blown" against the product to be labeled, so to speak.
  • the label it is not necessary for the label to be glued to the label receiving surface over its entire surface with the aid of the compressed air blast. It is sufficient if the label is attached locally so that it does not fall back inside the labeling machine. The label can then be completely stuck on at a later point in time, for example when the individual packaging containers are separated from one another and placed on a base such as a conveyor belt or the like.
  • a plurality of plate-shaped pressure elements are provided in the spaces between the conveying elements of the label conveyor. It is sufficient if at least one of these pressure elements is equipped with several nozzles for delivering the air blast. The nozzles are arranged in a row along the upper edge of the pressing member.
  • the nozzles can be arranged in the upper edge of that pressing element which runs below the center of the labels.
  • the compressed air source can be a compressed air source of a pneumatic system, which is usually already present in a labeling machine, for example for a pneumatic lifting drive of the pressure elements.
  • the control device then has an electronically controlled valve, through which the nozzles of the pressure element can be connected to the compressed air source.
  • a pressure accumulator is provided between the valve and the compressed air source, which contains a certain volume of the pressurized air and, when the valve opens and compressed air is released via the nozzles of the pressure element, dampens the pressure drop in the upstream pneumatic system.
  • the labeling machine shown has a product conveyor 10 with which products 12, 14 to be labeled are intermittently transported in a plurality of parallel tracks in the direction perpendicular to the plane of the drawing 1 be transported.
  • the products 12, 14 are food packaging, which are produced in a packaging machine (not shown) by deep-drawing a film 16, are filled with contents 18 and are then closed at the top with a cover film 20 that is sealed on.
  • the in 1 The state shown is that the individual packaging containers are still connected to one another by parts of the film 16 and the cover film 20 . The individual containers are only separated at a later stage during the packaging process.
  • the product conveyor 10 is formed by conveyor belts 22 with which the longitudinal edges of the film webs are held and transported.
  • a label conveyor 24 is arranged below the product conveyor 10, with which during each conveying cycle of the product conveyor 10 a number of self-adhesive labels 26 corresponding to the number of lanes of the products 12, 14 are fed into labeling positions, in which each label is positioned below a through the bottom of the relevant Packaging container formed label receiving surface 28 is located.
  • the label conveyor 24 is formed by a plurality of parallel, endless transport belts 30 which extend in the direction transverse to the transport direction of the product conveyor 10 between two shafts 32, at least one of which can be driven.
  • a label dispenser 34 of known design is arranged, with which the labels 26 are placed on the label conveyor in a timely manner, so that the labels are at the appropriate distances from one another when the label conveyor is in the in 1 position shown.
  • a plate-shaped pressure element 36 is arranged in a space between two of the transport belts 30 and 1 is shown in a section running within the plane of the plate.
  • the pressure element 36 has a trapezoidal outline that widens upwards, and its horizontal upper edge lies in the 1 shown condition slightly below the upper surface of the label conveyor 24 so that the transport of the labels 26 is not hindered.
  • the label conveyor 24 is held on a frame 38 on which a pneumatic cylinder 40 is also mounted. With the help of the pneumatic cylinder 40, the pressure element 36 can be extended upwards in order to lift the labels 26 off the label conveyor 24 and to press them against the label receiving surfaces 28 of the products 12, 14, as in 2 is shown.
  • the top edge of the pressure element 36 has a row of nozzles 42, which can be reached via a channel system 44 formed in the pressure element with a (only in 1 shown) compressed air source 46 are connected.
  • the compressed air source 46 is part of a pneumatic system, through which the pneumatic cylinder 40 is also supplied with compressed air via a valve 48 .
  • a further valve 50 enables compressed air to be introduced into two flexible hoses 52 which are connected to two symmetrically arranged compressed air inlets 54 of the line system 44 in the pressure element 36, so that all nozzles 42 can be supplied with compressed air essentially uniformly.
  • a pressure accumulator 56 is arranged between the valves 48 and 50 and serves to dampen the pressure drop when the valve 50 opens.
  • valves 48 and 50 are controlled by an electronic control device 58, which also communicates with or is integrated into the drive control for the label conveyor 24 and the product conveyor 10, so that the pressure element 36 works synchronously with the working cycle of the label conveyor 24 and the product conveyor 10 can.
  • valve 50 is closed again and the pressure elements 36, 60 are lowered so that a new work cycle can begin.

Description

Die Erfindung betrifft eine Etikettiermaschine der im Oberbegriff des Anspruchs 1 erläuterten Art, mit unter anderem einem Produktförderer zum Transport von zu etikettierenden Produkten, einem Etikettenförderer zum Zuführen von selbstklebenden Etiketten in jeweilige Etikettierpositionen relativ zu den Produkten auf dem Produktförderer, und mindestens einem beweglich in einem Zwischenraum zwischen Förderelementen des Etikettenförderers angeordneten Andruckorgan zum Abheben der Etiketten von dem Etikettenförderer und zum Andrücken derselben gegen jeweilige Etikettenaufnahmeflächen der Produkte.The invention relates to a labeling machine of the type described in the preamble of claim 1, including a product conveyor for transporting products to be labeled, a label conveyor for feeding self-adhesive labels into respective labeling positions relative to the products on the product conveyor, and at least one movable in one Space between conveying elements of the label conveyor arranged pressure element for lifting the labels from the label conveyor and for pressing them against respective label receiving surfaces of the products.

Eine Etikettiermaschine dieser Art ist aus US 2004/250960 A1 bekannt. Aus JP S61 164936 A ist eine Etikettiermaschine mit Luftstoßfunktionalität bekannt.A labeling machine of this type is out U.S. 2004/250960 A1 known. Out of JP S61 164936 A a labeling machine with air blast functionality is known.

Bei den zu etikettierenden Produkten kann es beispielsweise um Lebensmittelverpackungen handeln, die in einer Verpackungsmaschine durch Tiefziehen einer Folie hergestellt, mit Inhalten wie beispielsweise Wurstscheiben oder dergleichen befüllt und dann versiegelt werden. Die Etikettenaufnahmefläche wird häufig durch die Bodenfläche der Verpackungsbehälter gebildet. In dem Fall ist der Etikettenförderer so unterhalb des Produktförderers angeordnet, dass er die Etiketten in einer Richtung quer zur Transportrichtung des Produktförderers transportiert. Die Etiketten werden dann während jedes Fördertaktes des Produktförderers mit Hilfe eines Etikettenspenders, der an einem Ende des Etikettenförderers angeordnet ist, zeitgerecht auf den Etikettenförderer aufgegeben und in eine Position zugeführt, in der sich jedes Etikett unter der Etikettenaufnahmefläche des zugehörigen Verpackungsbehälters befindet. Mit Hilfe des Andruckorgans werden die Etiketten dann gegen die Bodenfläche des jeweiligen Verpackungsbehälters angedrückt.The products to be labeled can be food packaging, for example, which is produced in a packaging machine by thermoforming a film, filled with contents such as sausage slices or the like, and then sealed. The label receiving surface is often formed by the bottom surface of the packaging container. In this case, the label conveyor is arranged below the product conveyor in such a way that it transports the labels in a direction transverse to the transport direction of the product conveyor. The labels are then during each conveying cycle of the product conveyor is timely fed onto the label conveyor by means of a label dispenser arranged at one end of the label conveyor and fed into a position in which each label is located under the label receiving surface of the associated packaging container. The labels are then pressed against the bottom surface of the respective packaging container with the aid of the pressure element.

In einigen Anwendungsfällen gibt es bei einer Etikettiermaschine der eingangs genannten Art nur begrenzte Möglichkeiten, während des Andruckvorgangs einen Gegendruck auf die Produkte auszuüben und so dafür zu sorgen, dass die Etiketten mit einer ausreichenden Kraft gegen die Etikettenaufnahmeflächen angedrückt werden. Das gilt insbesondere bei tiefgezogenen Verpackungsbehältern der oben beschriebenen Art, die während des Etikettiervorgangs bereits an der Oberseite verschlossen sind. Der Gegendruck für das Andruckorgan beruht dann im wesentlichen nur auf der Gewichtskraft des in dem Verpackungsbehälter aufgenommenen Erzeugnisses.In some applications, with a labeling machine of the type mentioned at the outset, there are only limited options for exerting counter-pressure on the products during the pressing process and thus ensuring that the labels are pressed against the label receiving surfaces with sufficient force. This applies in particular to deep-drawn packaging containers of the type described above, which are already closed at the top during the labeling process. The counter-pressure for the pressing element is then based essentially only on the weight of the product accommodated in the packaging container.

Zumeist sind die Verpackungsbehälter in mehreren parallelen Spuren auf dem Produktförderer angeordnet, so dass die Andruckorgane während jedes Etikettiervorgangs mehrere Etiketten gleichzeitig gegen die Bodenflächen der Verpackungsbehälter andrücken. Gelegentlich kommt es vor, dass einzelne Verpackungsbehälter aufgrund eines Fehlers im vorausgegangenen Verpackungsprozess nicht mit einem Erzeugnis befüllt wurden, sondern leer geblieben sind. In diesem Fall fehlt es beim Etikettieren an dem nötigen Gegendruck für das Andruckorgan. Das kann dazu führen, dass das Etikett nicht an die Bodenfläche des Verpackungsbehälters angeklebt wird oder wieder abfällt und dann auf den Etikettenförderer zurückfällt und den weiteren Arbeitsablauf stört. Ähnliche Probleme können generell auch in den Fällen auftreten, in denen aus irgendeinem Grund die Etikettenaufhahmeflächen der Produkte nicht auf derselben Höhe liegen.The packaging containers are usually arranged in several parallel lanes on the product conveyor, so that the pressure elements simultaneously press several labels against the bottom surfaces of the packaging containers during each labeling process. Occasionally it happens that individual packaging containers were not filled with a product due to an error in the previous packaging process, but remained empty. In this case, there is no counter-pressure required for the pressure element when labeling. This may result in the label failing to stick to the bottom surface of the packaging container, or falling off again and then falling back onto the label conveyor, interfering with the further work flow. Similar problems can generally also arise in cases where for some reason the label receiving surfaces of the products are not at the same level.

Aufgabe der Erfindung ist es, eine Etikettiermaschine zu schaffen, die eine höhere Funktionssicherheit beim Ankleben der Etiketten an die einzelnen Produkte bietet.The object of the invention is to create a labeling machine that offers greater functional reliability when sticking the labels to the individual products.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.According to the invention, this object is achieved by the features of claim 1 .

Die Erfindung erlaubt es, während des Etikettiervorgangs mit Hilfe des Druckluftstoßes aus den Düsen eine zusätzliche Andruckkraft auf das Etikett auszuüben, so dass dieses auch bei mangelndem Gegendruck sicher an die Etikettenaufnahmefläche angeheftet wird. Ein zuverlässiges Anheften des Etiketts an die Etikettenaufnahmefläche ist auf diese Weise selbst dann möglich, wenn die Etikettenaufnahmefläche sich nicht in ihrer Sollposition befindet und somit auch bei maximalem Hub des Andruckorgans noch ein Zwischenraum zwischen dem Andruckorgan und dem darauf abgestützten Etikett einerseits und der Etikettenaufnahmefläche andererseits besteht. Durch den Druckluftstoß kann dieser Zwischenraum überbrückt werden, so dass das Etikett gleichsam gegen das zu etikettierende Produkt "geblasen" wird.The invention allows an additional pressure force to be exerted on the label during the labeling process with the aid of the compressed air blast from the nozzles, so that the label is securely attached to the label receiving surface even if there is insufficient counter-pressure. Reliable sticking of the label to the label receiving surface is possible in this way even if the label receiving surface is not in its desired position and thus even with maximum stroke of the pressure element there is still a gap between the pressure element and the label supported on it on the one hand and the label receiving surface on the other hand . This gap can be bridged by the blast of compressed air, so that the label is "blown" against the product to be labeled, so to speak.

Dabei ist es nicht erforderlich, dass das Etikett mit Hilfe des Druckluftstoßes vollflächig and die Etikettenaufnahmefläche angeklebt wird. Es genügt, wenn das Etikett lokal angeheftet wird, damit es innerhalb der Etikettiermaschine nicht wieder zurückfällt. Das vollständige Ankleben des Etiketts kann dann zu einem späteren Zeitpunkt erfolgen, beispielsweise dann, wenn die einzelnen Verpackungsbehälter voneinander getrennt und auf eine Unterlage wie ein Förderband oder dergleichen aufgesetzt werden.It is not necessary for the label to be glued to the label receiving surface over its entire surface with the aid of the compressed air blast. It is sufficient if the label is attached locally so that it does not fall back inside the labeling machine. The label can then be completely stuck on at a later point in time, for example when the individual packaging containers are separated from one another and placed on a base such as a conveyor belt or the like.

In den Zwischenräumen zwischen den Förderelementen des Etikettenförderers sind mehrere plattenförmige Andruckorgane vorgesehen. Es genügt, wenn mindestens eines dieser Andruckorgane mit mehreren Düsen zur Abgabe des Luftstoßes ausgestattet ist. Die Düsen sind in einer Reihe längs der Oberkante des Andruckorgans angeordnet.A plurality of plate-shaped pressure elements are provided in the spaces between the conveying elements of the label conveyor. It is sufficient if at least one of these pressure elements is equipped with several nozzles for delivering the air blast. The nozzles are arranged in a row along the upper edge of the pressing member.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous refinements of the invention are specified in the dependent claims.

Wenn mehrere plattenförmige Andruckorgane vorhanden sind, können die Düsen in Oberkante desjenigen Andruckorgans angeordnet sein, das unterhalb der Mitte der Etiketten verläuft.If several plate-shaped pressing elements are present, the nozzles can be arranged in the upper edge of that pressing element which runs below the center of the labels.

Bei der Druckluftquelle kann es sich um eine Druckluftquelle eines Pneumatiksystems handeln, das zumeist bei einer Etikettiermaschine ohnehin vorhanden ist, beispielsweise für einen pneumatischen Hubantrieb der Andruckorgane.The compressed air source can be a compressed air source of a pneumatic system, which is usually already present in a labeling machine, for example for a pneumatic lifting drive of the pressure elements.

Die Steuereinrichtung weist dann ein elektronisch gesteuertes Ventil auf, durch das die Düsen des Andruckorgans mit der Druckluftquelle verbindbar sind. In einer vorteilhaften Ausführungsform ist zwischen dem Ventil und der Druckluftquelle ein Druckspeicher vorgesehen, der ein gewisses Volumen der unter Druck stehenden Luft enthält und, wenn das Ventil öffnet und Druckluft über die Düsen des Andruckorgans abgelassen wird, den Druckabfall im vorgelagerten Pneumatiksystem dämpft.The control device then has an electronically controlled valve, through which the nozzles of the pressure element can be connected to the compressed air source. In an advantageous embodiment, a pressure accumulator is provided between the valve and the compressed air source, which contains a certain volume of the pressurized air and, when the valve opens and compressed air is released via the nozzles of the pressure element, dampens the pressure drop in the upstream pneumatic system.

Im folgenden wird ein Ausführungsbeispiel anhand der Zeichnung näher erläutert.In the following an embodiment is explained in more detail with reference to the drawing.

Es zeigen:

Fig. 1
einen schematischen Schnitt durch wesentliche Teile einer Etikettiermaschine gemäß der Erfindung;
Figuren 2 und 3
die Etikettiermaschine nach Fig. 1 in verschiedenen Betriebsphasen während eines Etikettiervorgangs; und
Fig. 4
einen vergrößerten Teilschnitt längs der Linie IV - IV in Fig. 3.
Show it:
1
a schematic section through essential parts of a labeling machine according to the invention;
Figures 2 and 3
the labeling machine 1 in different operating phases during a labeling process; and
4
an enlarged partial section along the line IV - IV in 3 .

Die in Fig. 1 gezeigte Etikettiermaschine weist einen Produktförderer 10 auf, mit dem zu etikettierenden Produkte 12, 14 in mehreren parallelen Spuren intermittierend in der Richtung senkrecht zur Zeichenebene in Fig. 1 transportiert werden. Im gezeigten Beispiel handelt es sich bei den Produkten 12, 14 um Lebensmittelverpackungen, die in einer nicht gezeigten Verpackungsmaschine durch Tiefziehen einer Folie 16 hergestellt, mit Inhalten 18 befüllt und dann an der Oberseite mit einer aufgesiegelten Abdeckfolie 20 verschlossen wurden. In dem in Fig. 1 gezeigten Zustand sind die einzelnen Verpackungsbehälter noch durch Teile der Folie 16 und der Abdeckfolie 20 miteinander verbunden. Die Trennung der einzelnen Behälter erfolgt erst in einem späteren Stadium während des Verpackungsprozesses.In the 1 The labeling machine shown has a product conveyor 10 with which products 12, 14 to be labeled are intermittently transported in a plurality of parallel tracks in the direction perpendicular to the plane of the drawing 1 be transported. In the example shown, the products 12, 14 are food packaging, which are produced in a packaging machine (not shown) by deep-drawing a film 16, are filled with contents 18 and are then closed at the top with a cover film 20 that is sealed on. in the in 1 The state shown is that the individual packaging containers are still connected to one another by parts of the film 16 and the cover film 20 . The individual containers are only separated at a later stage during the packaging process.

Der Produktförderer 10 wird durch Förderbänder 22 gebildet, mit denen die Längsränder der Folienbahnen gehalten und transportiert werden.The product conveyor 10 is formed by conveyor belts 22 with which the longitudinal edges of the film webs are held and transported.

Unterhalb des Produktförderers 10 ist ein Etikettenförderer 24 angeordnet, mit dem während jedes Fördertaktes des Produktförderers 10 eine der Anzahl der Spuren der Produkte 12, 14 entsprechende Anzahl selbstklebender Etiketten 26 in Etikettierpositionen zugeführt werden, in der sich jedes Etikett unterhalb einer durch den Boden des betreffenden Verpackungsbehälters gebildeten Etikettenaufnahmefläche 28 befindet. Der Etikettenförderer 24 wird durch mehrere parallele endlose Transportriemen 30 gebildet, die sich in der Richtung quer zur Transportrichtung des Produktförderers 10 zwischen zwei Wellen 32 erstrecken, von denen mindestens eine antreibbar ist.A label conveyor 24 is arranged below the product conveyor 10, with which during each conveying cycle of the product conveyor 10 a number of self-adhesive labels 26 corresponding to the number of lanes of the products 12, 14 are fed into labeling positions, in which each label is positioned below a through the bottom of the relevant Packaging container formed label receiving surface 28 is located. The label conveyor 24 is formed by a plurality of parallel, endless transport belts 30 which extend in the direction transverse to the transport direction of the product conveyor 10 between two shafts 32, at least one of which can be driven.

An einem Ende des Etikettenförderers 24, rechts in Fig. 1, ist ein Etikettenspender 34 von bekannter Bauart angeordnet, mit dem die Etiketten 26 zeitgerecht auf den Etikettenförderer aufgegeben werden, so dass die Etiketten die passenden Abstände zueinander aufweisen, wenn der Etikettenförderer in der in Fig. 1 gezeigten Position anhält.At one end of label conveyor 24, right in 1 , a label dispenser 34 of known design is arranged, with which the labels 26 are placed on the label conveyor in a timely manner, so that the labels are at the appropriate distances from one another when the label conveyor is in the in 1 position shown.

In einem Zwischenraum zwischen zweien der Transportriemen 30 ist ein plattenförmiges Andruckorgan 36 angeordnet, das in Fig. 1 in einem innerhalb der Plattenebene verlaufenden Schnitt gezeigt ist. Das Andruckorgan 36 hat einen trapezförmigen, sich nach oben erweiternden Umriss, und seine waagerechte Oberkante liegt in dem in Fig. 1 gezeigten Zustand geringfügig unterhalb der oberen Oberfläche des Etikettenförderers 24, so dass der Transport der Etiketten 26 nicht behindert wird.A plate-shaped pressure element 36 is arranged in a space between two of the transport belts 30 and 1 is shown in a section running within the plane of the plate. The pressure element 36 has a trapezoidal outline that widens upwards, and its horizontal upper edge lies in the 1 shown condition slightly below the upper surface of the label conveyor 24 so that the transport of the labels 26 is not hindered.

Der Etikettenförderer 24 ist an einem Gestell 38 gehalten, an dem auch ein Pneumatikzylinder 40 montiert ist. Mit Hilfe des Pneumatikzylinders 40 ist das Andruckorgan 36 nach oben ausfahrbar, um die Etiketten 26 vom Etikettenförderer 24 abzuheben und gegen die Etikettenaufnahmeflächen 28 der Produkte 12, 14 anzudrücken, wie in Fig. 2 gezeigt ist.The label conveyor 24 is held on a frame 38 on which a pneumatic cylinder 40 is also mounted. With the help of the pneumatic cylinder 40, the pressure element 36 can be extended upwards in order to lift the labels 26 off the label conveyor 24 and to press them against the label receiving surfaces 28 of the products 12, 14, as in 2 is shown.

In Figuren 1 und 2 ist allerdings eine Situation dargestellt, in der eines der zu etikettierenden Produkte, nämlich das Produkt 14, fehlerhaft ist. Aufgrund eines Fehlers wurde in diesen Verpackungsbehälter kein Inhalt 18 eingelegt, mit der Folge, dass der Boden dieses Verpackungsbehälters nicht nach unten durchgedrückt wurde und sich deshalb die an der Unterseite des Bodens gebildete Etikettenaufnahmefläche 28 in einer höheren Position befindet als bei den übrigen Behältern. Wie Fig. 2 zeigt, verbleibt deshalb zwischen der Etikettenaufnahmefläche 28 des Produkts 14 und der Oberkante des Andruckorgans 36 ein Zwischenraum, so dass das dortige Etikett 26 nicht gegen das Produkt 14 angedrückt werden kann, während bei den übrigen Produkten 12 die Etiketten korrekt angedrückt werden.In figures 1 and 2 however, a situation is shown in which one of the products to be labeled, namely the product 14, is faulty. Due to an error, no content 18 was placed in this packaging container, with the result that the bottom of this packaging container was not pressed down and therefore the label receiving surface 28 formed on the underside of the bottom is in a higher position than the other containers. As 2 shows, a gap remains between the label receiving surface 28 of the product 14 and the upper edge of the pressing element 36, so that the label 26 there cannot be pressed against the product 14, while the labels are pressed correctly on the other products 12.

Um sicherzustellen, dass auch bei dem Produkt 14 das Etikett 26 zumindest provisorisch an den Behälterboden angeheftet werden kann, weist das Andruckorgan 36 in seiner Oberkante eine Reihe von Düsen 42 auf, die über ein in dem Andruckorgan gebildetes Kanalsystem 44 mit einer (nur in Fig. 1 gezeigten) Druckluftquelle 46 verbunden sind.In order to ensure that the label 26 can also be attached at least provisionally to the container bottom for the product 14, the top edge of the pressure element 36 has a row of nozzles 42, which can be reached via a channel system 44 formed in the pressure element with a (only in 1 shown) compressed air source 46 are connected.

Die Druckluftquelle 46 ist im gezeigten Beispiel Teil eines Pneumatiksystems, durch das über ein Ventil 48 auch der Pneumatikzylinder 40 mit Druckluft versorgt wird. Ein weiteres Ventil 50 ermöglicht die Einleitung von Druckluft in zwei flexible Schläuche 52, die an zwei symmetrisch angeordnete Drucklufteinlässe 54 des Leitungssystems 44 im Andruckorgan 36 angeschlossen sind, so dass alle Düsen 42 im wesentlichen gleichmäßig mit Druckluft versorgt werden können.In the example shown, the compressed air source 46 is part of a pneumatic system, through which the pneumatic cylinder 40 is also supplied with compressed air via a valve 48 . A further valve 50 enables compressed air to be introduced into two flexible hoses 52 which are connected to two symmetrically arranged compressed air inlets 54 of the line system 44 in the pressure element 36, so that all nozzles 42 can be supplied with compressed air essentially uniformly.

Zwischen den Ventilen 48 und 50 ist im gezeigten Beispiel ein Druckspeicher 56 angeordnet, der dazu dient, den Druckabfall beim Öffnen des Ventils 50 zu dämpfen.In the example shown, a pressure accumulator 56 is arranged between the valves 48 and 50 and serves to dampen the pressure drop when the valve 50 opens.

Die Ventile 48 und 50 werden durch eine elektronische Steuereinrichtung 58 gesteuert, die auch mit der Antriebssteuerung für den Etikettenförderer 24 und den Produktförderer 10 kommuniziert oder in diese integriert ist, so dass das Andruckorgan 36 synchron mit dem Arbeitstakt des Etikettenförderers 24 und des Produktförderers 10 arbeiten kann.The valves 48 and 50 are controlled by an electronic control device 58, which also communicates with or is integrated into the drive control for the label conveyor 24 and the product conveyor 10, so that the pressure element 36 works synchronously with the working cycle of the label conveyor 24 and the product conveyor 10 can.

In dem in Fig. 2 gezeigten Zustand ist der Produktförderer 10 angehalten, und der Pneumatikzylinder 40 wurde ausgefahren, so dass das Andruckorgan 36 die Etiketten gegen die Produkte 12 andrückt. In diesem Zustand wird das Ventil 50 geöffnet, so dass über die Düsen 42 ein zusätzlicher Luftstoß auf alle Etiketten 26 ausgeübt wird, die sich in der Etikettierposition befinden. Bei dem Produkt 14 wird dadurch das Etikett 26 gegen die Etikettenaufnahmefläche 28 geblasen und somit an das Produkt angeheftet, obgleich das Andruckorgan 36 keinen unmittelbaren Kontakt zu dem Produkt hat.in the in 2 The state shown is that the product conveyor 10 is stopped and the pneumatic cylinder 40 has been extended, so that the pressure member 36 presses the labels against the products 12. In this state, the valve 50 is opened so that an additional blast of air is applied via the nozzles 42 to all labels 26 which are in the labeling position. In the case of the product 14, the label 26 is thereby blown against the label-receiving surface 28 and is thus attached to the product, although the pressing element 36 has no direct contact with the product.

Dieser Zustand ist in Figuren 3 und 4 dargestellt. In Fig. 4 ist außerdem zu erkennen, dass zusätzlich zu dem Andruckorgan 36 noch mehrere weitere plattenförmige Andruckorgane 60 vorhanden sind, die symmetrisch zu dem Andruckorgan 36 in den Zwischenräumen zwischen den Transportriemen 30 angeordnet sind. Die Andruckorgane 60 haben die gleiche Umrissform wie das Andruckorgan 36 und werden gemeinsam mit diesen durch den Pneumatikzylinder 40 angehoben und abgesenkt. Sie können jedoch eine geringere Dicke als das Andruckorgan 36 aufweisen, da sie keine Düsen 42 und dementsprechend auch kein Leitungssystem 44 enthalten. Um das Etikett 26 in der in Fig. 4 gezeigten Weise an das Produkt 14 anzuheften genügt die einzelne Düsenreihe des Andruckorgans 36.This state is in Figures 3 and 4 shown. In 4 It can also be seen that, in addition to the pressure element 36, there are several further plate-shaped pressure elements 60 which are arranged symmetrically to the pressure element 36 in the spaces between the transport belts 30. The pressure elements 60 have the same outline shape as the pressure element 36 and are raised and lowered together with them by the pneumatic cylinder 40 . However, they can have a smaller thickness than the pressure element 36, since they contain no nozzles 42 and, accordingly, no line system 44 either. To label 26 in the in 4 attached to the product 14 in the manner shown, the single row of nozzles of the pressure element 36 is sufficient.

Nachdem der Luftstoß abgegeben wurde, wird das Ventil 50 wieder geschlossen, und die Andruckorgane 36, 60 werden abgesenkt, so dass ein neuer Arbeitstakt beginnen kann.After the blast of air has been released, the valve 50 is closed again and the pressure elements 36, 60 are lowered so that a new work cycle can begin.

Claims (5)

  1. A labelling machine comprising a product conveyor (10) for conveying products (12, 14) that are to be labelled, a label conveyor (24) for supplying self-adhesive labels (26) into respective labelling positions relative to the products (12, 14) on the product conveyor (10), and at least one pressure applying member (36) that is movably arranged in an interspace between conveyor elements (30) of the label conveyor (24) and is configured for lifting the label (26) off the label conveyor (24) and pressing the same against respective label receiving surfaces (28) of the products (12, 14), wherein the label conveyor (24) has, as said conveyor elements (30), a plurality of parallel, spaced-apart transport belts, and the pressure applying member (36) is configured as a plate that has an edge extending in parallel with the transport belts (30) and is extendable in the direction in normal to said edge, characterized in that the pressure applying member (36) has at least one nozzle (42) that is directed towards a label receiving surface (28) and is connected to a pressure source (46), a control device (58) is configured for causing the nozzle to eject an air jet during each pressure application action of the pressure applying member (36), and in that a plurality of nozzles (42) are arranged in a row in an edge of the plate.
  2. The labelling machine according to claim 1, comprising a plurality of parallel plate-shaped pressure applying members (36, 60) that are arranged for joint movement and at least one (60) of which is configured without nozzles.
  3. The labelling machine according to any of the preceding claims, wherein a pressure accumulator (56) is provided between the pressure source (46) and a valve (50) for interrupting and opening the supply of compressed air to the nozzle (42).
  4. The labelling machine according to any of the preceding claims, wherein the product conveyor (10) is configured for transporting products (12, 14) that take the form of packaging containers that are deep-drawn from a common foil (16), and the label receiving surface (28) is a respective bottom surface of the packaging container.
  5. The labelling machine according to any of the preceding claims, wherein the transport direction of the label conveyor (24) is orthogonal to the transport direction of the product conveyor (10), and a label dispenser (34) is provided at one end of the label conveyor (24).
EP17153481.1A 2017-01-27 2017-01-27 Labelling machine Active EP3354582B1 (en)

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EP17153481.1A EP3354582B1 (en) 2017-01-27 2017-01-27 Labelling machine

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EP17153481.1A EP3354582B1 (en) 2017-01-27 2017-01-27 Labelling machine

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EP3354582B1 true EP3354582B1 (en) 2022-07-20

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202021100153U1 (en) 2021-01-14 2022-04-20 Project Automation & Engineering Gmbh Device for banding and/or labeling an object
DE202021106625U1 (en) 2021-12-03 2021-12-10 Project Automation & Engineering Gmbh banding sheet

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2092095B (en) * 1981-02-04 1985-03-13 Norcros Investments Ltd Label applying apparatus
JPS61164936A (en) * 1984-12-27 1986-07-25 東芝テック株式会社 Labeller
US6868887B2 (en) * 2003-06-12 2005-03-22 Koch Equipment Llc Labeling device having enhanced sanitary design
JP5820214B2 (en) * 2011-09-27 2015-11-24 リンテック株式会社 Sheet sticking device and sheet sticking method
JP6027397B2 (en) * 2012-10-30 2016-11-16 リンテック株式会社 Sheet sticking device and sheet sticking method

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