EP3515847B1 - Apparatus for feeding a plurality of flat elements lying flat on one another, in particular carton blanks, to a packaging apparatus - Google Patents

Apparatus for feeding a plurality of flat elements lying flat on one another, in particular carton blanks, to a packaging apparatus Download PDF

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Publication number
EP3515847B1
EP3515847B1 EP17772692.4A EP17772692A EP3515847B1 EP 3515847 B1 EP3515847 B1 EP 3515847B1 EP 17772692 A EP17772692 A EP 17772692A EP 3515847 B1 EP3515847 B1 EP 3515847B1
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EP
European Patent Office
Prior art keywords
feed
feed portion
conveying
conveying apparatus
conveying surface
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Application number
EP17772692.4A
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German (de)
French (fr)
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EP3515847A1 (en
Inventor
Manfred BONETSMÜLLER
Norbert Eder
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.)
Somic Verpackungsmaschinen & Co KG GmbH
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Somic Verpackungsmaschinen & Co KG GmbH
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Publication of EP3515847A1 publication Critical patent/EP3515847A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/042—Feeding sheets or blanks using rolls, belts or chains
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/14—Feeding individual bags or carton blanks from piles or magazines
    • B65B43/22—Feeding individual bags or carton blanks from piles or magazines by rollers
    • B65B43/225—Feeding individual bags or carton blanks from piles or magazines by rollers specially adapted for carton blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/02—Supports or magazines for piles from which articles are to be separated adapted to support articles on edge
    • B65H1/025—Supports or magazines for piles from which articles are to be separated adapted to support articles on edge with controlled positively-acting mechanical devices for advancing the pile to present the articles to the separating device
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/126—Feeding carton blanks in flat or collapsed state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/264—Arrangement of side-by-side belts
    • B65H2404/2641—Arrangement of side-by-side belts on movable frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/50—Surface of the elements in contact with the forwarded or guided material
    • B65H2404/53—Surface of the elements in contact with the forwarded or guided material with particular mechanical, physical properties
    • B65H2404/531—Surface of the elements in contact with the forwarded or guided material with particular mechanical, physical properties particular coefficient of friction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B65H2701/1764—Cut-out, single-layer, e.g. flat blanks for boxes

Definitions

  • the invention relates to a device for feeding a plurality of planar elements lying flat against one another, in particular cardboard blanks, to a packaging device according to the preamble of claim 1.
  • feed section in the sense of the present invention denotes a length section of the feed device which has a predetermined inclination in the direction of the packaging device over its entire length.
  • the invention will be explained below for the sake of simplicity using the example of cardboard blanks. However, no limitation whatsoever can be derived from this.
  • Feed devices (not of the generic type) are known from the prior art, which have a single feed section which drops towards the packaging device.
  • the conveying surface of the conveying device which extends over the entire length of this feed section is formed from a material whose coefficient of static friction with respect to the carton blanks is selected such that the carton blanks can be conveyed towards the packaging device essentially without slippage relative to the conveying surface.
  • the length of the feed section is usually dimensioned such that the feed section can accommodate so many cardboard blanks that the loading of the packaging device is secured for several minutes, it is easy to see that the gravitational pressure (dynamic pressure), which the whole the carton blanks, due to the inclination of the feed section, exerts on the carton blanks arranged adjacent to the packaging device, can assume a value that makes it more difficult, even occasionally impossible, to separate the carton blanks by means of a gripper unit, usually having a vacuum gripper, at the beginning of the packaging device. This leads to undesirable downtime of the packaging device.
  • the cardboard blanks with their circumferential edge can slide along this conveying surface on the one hand, whereby the advantages of the generic state of the art can also be achieved with the feed device according to the invention.
  • the carton blanks receive a conveying impulse with every conveying cycle, which, as has been impressively confirmed in practice, is sufficient to counteract tilting of the carton blanks.
  • the static friction coefficient of the conveying surface of the further conveying device is selected such that the static friction between the conveying surface and the carton blanks is overcome during a conveying cycle of the further conveying device, so that there is slippage between the conveying surface and the carton blanks.
  • the conveying surface of the conveying device of the first feed section can be formed from polyurethane or / and the conveying surface of the further conveying device of the second feed section can be made from Teflon.
  • the conveying surface of the conveying device of the first feed section could also be formed from elastomer, natural rubber, polyamide fabric or silicone, and the conveying surface of the further one Conveyor of the second feed section can be formed from PVC or a steel support.
  • a common drive device is assigned to the conveying device of the first feed section and the further conveying device of the second feed section.
  • the two conveying devices are in drive connection with one another at the transition from the first feed section to the second feed section. This can be accomplished, for example, by arranging a deflection unit at the transition from the first feed section to the second feed section, which deflects both the conveying surface of the conveyor device of the first feed section and the conveying surface of the further conveyor device of the second feed section.
  • the one conveyor device and / or the further conveyor device comprises at least one conveyor belt which is formed, for example, by a toothed belt.
  • the surface of the at least one conveyor belt facing the carton blanks forms the conveying surface or a section of the conveying surface of the one conveying device or the further conveying device.
  • the deflection unit comprises a rotatable axis, on which at least one deflection wheel assigned to the conveyor belt of the first feed section and also one deflection wheel assigned to the further conveyor device of the second feed section are arranged.
  • the two deflection wheels can also be formed in one piece with one another and rotatably supported by means of a common pivot bearing. If toothed belts are used, the deflection wheels can advantageously be designed as toothed wheels.
  • the Drive combination toothed belt / gear enables particularly precise driving of the one conveyor device and / or the other conveyor device.
  • the feed device comprises at least two feed units, each of which has at least one conveyor belt assigned to the first feed section and one conveyor belt assigned to the second feed section, these conveyor belts being arranged on a common carrier.
  • the conveyor belts of each feed unit advantageously have the same width.
  • the conveyor belts are arranged adjacent to one another at the transition from the first feed section to the second feed section. It is preferred if the distance between the two conveyor belts is smaller than their width or the width of the narrower of the two conveyor belts.
  • the feed device can comprise a frame on which the at least two feed units are arranged such that they can be displaced relative to one another transversely to the conveying direction. This makes it possible to use the feed device for flat elements, in particular cardboard blanks, of different widths.
  • the first feed section as is known per se from the prior art, can advantageously run essentially horizontally. This makes it possible to form it in any desired length without thereby creating a dynamic pressure which could affect the carton blanks arranged adjacent to the end of the second feed section of the packaging device.
  • the second feed section can have an inclination angle of between approximately 5 ° and approximately 40 ° relative to the horizontal, positive angle values indicating a course of the second feed section falling in the conveying direction to the packaging device.
  • a feed device according to the invention is generally designated 10. It is used to feed a plurality of flat elements 12 lying flat against one another (see Figure 3 ), in particular cardboard blanks, to a packaging device, the position of which in Figure 3 is only roughly indicated schematically by the reference symbol V.
  • the feed device 10 comprises two feed units 14 and 16, which with respect to a longitudinal center plane E (see Figure 2 ) of the feed device 10 are arranged mirror-symmetrically, but are otherwise identical. Therefore, the construction of the feed units 14 and 16 will be described in the following only using the example of the feed unit 14.
  • the feed unit 14 and thus also the feed device 10 comprises two feed sections 18 and 20, each of which has a conveyor belt 22 or 24, both of which are preferably formed by a toothed belt.
  • the conveyor belt 22 is driven by a drive device 26, which is best in Figure 3 can be seen and acts on a drive wheel 28.
  • the drive device 26 is formed by a cylinder-piston unit 27, which actuates the drive wheel 28 every time it is actuated by a lever 32 connected to the piston rod 30 by a predetermined angle Figure 3 rotates counterclockwise, and thus the upper run 22a of the conveyor belt 22 moves by a predetermined distance in the conveying direction F, ie towards the packaging device V.
  • a freewheel (not shown) ensures that the drive wheel 28 remains in its position.
  • a deflection wheel 34 for the conveyor belt 22 is arranged at the transition from the first feed section 18 to the second feed section 20.
  • This deflection wheel 34 is arranged on the same axis as a deflection wheel 36 of the second conveyor belt 24.
  • the two deflection wheels 34 and 36 are rotatably connected to one another, so that the drive movement of the conveyor belt 22 can be transmitted to the conveyor belt 24. In this way, no separate drive device needs to be provided for the conveyor belt 24.
  • the deflection wheel 38 of the second conveyor belt 24 is also mentioned, which is arranged on the end of the feed device 10 facing the packaging device V.
  • the surface 22a1 of the upper run 22a of the conveyor belt 22 and the surface 24a1 of the upper run 24a of the conveyor belt 24 each form a conveying surface on which the carton blanks 12 operate, that is to say on their way, during the operation of the feed device 10 get up to the packaging device V, as from Figure 3 can be seen with their peripheral edges.
  • both conveyor belts 22 and 24 can be designed as toothed belts, in which case the deflection wheels 28, 34, 36 and 38 are designed as toothed wheels.
  • both conveyor belts 22 and 24 comprise a first layer 40, which serves the contact with the deflection wheels 28, 34, 36 and 38 and in the case of the formation of the conveyor belt as a toothed belt also carries their teeth 42.
  • both conveyor belts 22 and 24 comprise a second layer 44 which comes into contact with the cardboard blanks 12.
  • the second layer 44 of the conveyor belt 22 is formed from a material which has a higher coefficient of static friction than the material of the second layer 44 of the conveyor belt 24.
  • the second layer 44 of the conveyor belt 22 can be formed from polyurethane, while the second layer 44 of the Conveyor belt 24 can be formed from Teflon.
  • the first feed section 18 runs essentially horizontally, while the second feed section 20 drops in the conveying direction F.
  • the angle of inclination ⁇ is preferably between approximately 5 ° and approximately 40 °.
  • the two conveyor belts 22 and 24 are in the region of the transition from the first feed section 18 to the second Feed section 20 arranged immediately adjacent to each other. However, they are preferably not in contact with one another, since this would lead to wear, but are at a distance from one another which is smaller than the width b of the two conveyor belts 22 and 24 (see Figure 2 ).
  • the two feed units 14 and 16 are designed as self-contained assemblies which are attached to a frame 50 of the feed device 10 in the transverse direction Q, i.e. are arranged orthogonally to the conveying direction F, adjustable relative to each other.
  • all components of the feed units 14 and 16, i.e. the conveyor belts 22 and 24, and all the elements required to drive them, are arranged on a common carrier 52.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Making Paper Articles (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Zuführen einer Mehrzahl von flächig aneinander anliegenden, flächigen Elementen, insbesondere Kartonzuschnitten, zu einer Verpackungsvorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a device for feeding a plurality of planar elements lying flat against one another, in particular cardboard blanks, to a packaging device according to the preamble of claim 1.

Bereits an dieser Stelle sei darauf hingewiesen, dass der Begriff "Zuführabschnitt" im Sinne der vorliegenden Erfindung einen Längenabschnitt der Zuführvorrichtung bezeichnet, der über seine gesamte Länge eine vorbestimmte Neigung in Richtung zur Verpackungsvorrichtung hin aufweist. Zudem wird die Erfindung nachstehend der einfacheren Darstellung halber am Beispiel von Kartonzuschnitten erläutert werden. Hieraus kann jedoch keine wie auch immer geartete Einschränkung abgeleitet werden.Already at this point it should be pointed out that the term "feed section" in the sense of the present invention denotes a length section of the feed device which has a predetermined inclination in the direction of the packaging device over its entire length. In addition, the invention will be explained below for the sake of simplicity using the example of cardboard blanks. However, no limitation whatsoever can be derived from this.

Aus dem Stand der Technik sind (nicht gattungsgemäße) Zuführvorrichtungen bekannt, welche über einen einzigen Zuführabschnitt verfügen, der zur Verpackungsvorrichtung hin abfällt. Die Förderoberfläche der sich über die gesamte Länge dieses Zuführabschnitts erstreckenden Fördereinrichtung ist dabei von einem Material gebildet, dessen Haftreibungskoeffizient bezüglich der Kartonzuschnitte derart gewählt ist, dass die Kartonzuschnitte im Wesentlichen ohne Schlupf relativ zur Förderoberfläche zur Verpackungsvorrichtung hin gefördert werden können. Berücksichtigt man, dass die Länge des Zuführabschnitts üblicherweise derart bemessen ist, dass der Zuführabschnitt so viele Kartonzuschnitte aufnehmen kann, dass die Beschickung der Verpackungsvorrichtung für mehrere Minuten gesichert ist, so sieht man leicht ein, dass der schwerkraftbedingte Druck (Staudruck), den die Gesamtheit der Kartonzuschnitte aufgrund der Neigung des Zuführabschnitts auf die der Verpackungsvorrichtung benachbart angeordneten Kartonzuschnitte ausübt, einen Wert annehmen kann, der das Vereinzeln der Kartonzuschnitte mittels einer, üblicherweise Vakuumgreifer aufweisenden, Greifereinheit am Beginn der Verpackungsvorrichtung erschwert, ja gelegentlich sogar unmöglich macht. Dies führt zu unerwünschten Ausfallzeiten der Verpackungsvorrichtung.Feed devices (not of the generic type) are known from the prior art, which have a single feed section which drops towards the packaging device. The conveying surface of the conveying device which extends over the entire length of this feed section is formed from a material whose coefficient of static friction with respect to the carton blanks is selected such that the carton blanks can be conveyed towards the packaging device essentially without slippage relative to the conveying surface. If one takes into account that the length of the feed section is usually dimensioned such that the feed section can accommodate so many cardboard blanks that the loading of the packaging device is secured for several minutes, it is easy to see that the gravitational pressure (dynamic pressure), which the whole the carton blanks, due to the inclination of the feed section, exerts on the carton blanks arranged adjacent to the packaging device, can assume a value that makes it more difficult, even occasionally impossible, to separate the carton blanks by means of a gripper unit, usually having a vacuum gripper, at the beginning of the packaging device. This leads to undesirable downtime of the packaging device.

Um diesem Problem zu begegnen, wurden bereits (gattungsgemäße) Zuführvorrichtungen vorgeschlagen, die einen im Wesentlichen horizontal verlaufenden ersten Zuführabschnitt mit einer Fördereinrichtung und einen zur Verpackungsvorrichtung hin abfallenden zweiten Zuführabschnitt ohne Fördereinrichtung aufweisen. Durch diese Anordnung kann zwar der Staudruck deutlich reduziert werden, da die in dem horizontalen ersten Zuführabschnitt angeordneten Kartonzuschnitte hierzu nicht beitragen können. Es hat sich in der Praxis jedoch gezeigt, dass diese Zuführvorrichtungen anfällig sind für ein Verkanten der am Ende des zweiten Zuführabschnitts der Verpackungsvorrichtung benachbart angeordneten Kartonzuschnitte. Dabei ist zu berücksichtigen, dass die Kartonzuschnitte der Verpackungsvorrichtung - auch erfindungsgemäß - bevorzugt in einer Orientierung zugeführt werden, in der sie mit einer umlaufenden Kante auf dem ersten Zuführabschnitt und dem zweiten Zuführabschnitt aufstehen.In order to counter this problem, (generic) feed devices have already been proposed, which have a substantially horizontally running first feed section with a conveyor device and a second feed section without a conveyor device that slopes towards the packaging device. With this arrangement, the dynamic pressure can be significantly reduced since the cardboard blanks arranged in the horizontal first feed section cannot contribute to this. In practice, however, it has been shown that these feed devices are susceptible to tilting of the carton blanks arranged adjacent to the end of the second feed section of the packaging device. It should be taken into account here that the cardboard blanks of the packaging device - also according to the invention - are preferably fed in an orientation in which they stand on the first feed section and the second feed section with a peripheral edge.

Die Druckschrift US 2009/087296 A1 offenbart eine Zuführvorrichtung nach dem Oberbegriff des Anspruchs 1.The publication US 2009/087296 A1 discloses a feeding device according to the preamble of claim 1.

Ferner sei auf die Druckschrift US 3 680 854 A verwiesen.Furthermore, be on the document US 3,680,854 A referred.

Es ist Aufgabe der vorliegenden Erfindung, hier Abhilfe zu schaffen.It is an object of the present invention to remedy this.

Diese Aufgabe wird erfindungsgemäß durch eine Zuführvorrichtung nach Anspruch 1 gelöst.This object is achieved according to the invention by a feed device according to claim 1.

Infolge des niedrigen Haftreibungskoeffizienten der Förderoberfläche der weiteren Fördereinrichtung können die Kartonzuschnitte mit ihrer umlaufenden Kante einerseits auf dieser Förderoberfläche entlang gleiten, wodurch die Vorteile des gattungsbildenden Standes der Technik auch bei der erfindungsgemäßen Zuführvorrichtung erzielt werden können. Andererseits erhalten die Kartonzuschnitte trotz des niedrigen Haftreibungskoeffizienten gleichwohl bei jedem Fördertakt einen Förderimpuls, der, wie sich in der Praxis eindruckvoll bestätigt hat, ausreicht, um einem Verkanten der Kartonzuschnitte entgegenzuwirken.As a result of the low coefficient of static friction of the conveying surface of the further conveying device, the cardboard blanks with their circumferential edge can slide along this conveying surface on the one hand, whereby the advantages of the generic state of the art can also be achieved with the feed device according to the invention. On the other hand, despite the low coefficient of static friction, the carton blanks receive a conveying impulse with every conveying cycle, which, as has been impressively confirmed in practice, is sufficient to counteract tilting of the carton blanks.

Vorteilhafterweise kann vorgesehen sein, dass der Haftreibungskoeffizienten der Förderoberfläche der weiteren Fördereinrichtung derart gewählt ist, dass die Haftreibung zwischen der Förderoberfläche und den Kartonzuschnitten während eines Fördertakts der weiteren Fördereinrichtung überwunden wird, so dass es zum Schlupf zwischen der Förderoberfläche und den Kartonzuschnitten kommt.It can advantageously be provided that the static friction coefficient of the conveying surface of the further conveying device is selected such that the static friction between the conveying surface and the carton blanks is overcome during a conveying cycle of the further conveying device, so that there is slippage between the conveying surface and the carton blanks.

Beispielsweise kann die Förderoberfläche der Fördereinrichtung des ersten Zuführabschnitts aus Polyurethan gebildet sein oder/und die Förderoberfläche der weiteren Fördereinrichtung des zweiten Zuführabschnitts aus Teflon gebildet sein. Alternativ könnte die Förderoberfläche der Fördereinrichtung des ersten Zuführabschnitts auch aus Elastomer, Naturkautschuk, Polyamidgewebe oder Silikon gebildet sein, und könnte die Förderoberfläche der weiteren Fördereinrichtung des zweiten Zuführabschnitts aus PVC oder einer Stahlauflage gebildet sein.For example, the conveying surface of the conveying device of the first feed section can be formed from polyurethane or / and the conveying surface of the further conveying device of the second feed section can be made from Teflon. Alternatively, the conveying surface of the conveying device of the first feed section could also be formed from elastomer, natural rubber, polyamide fabric or silicone, and the conveying surface of the further one Conveyor of the second feed section can be formed from PVC or a steel support.

Zur Erzielung eines aufeinander abgestimmten Betriebs der beiden Fördereinrichtungen kann ferner vorgesehen sein, dass der Fördereinrichtung des ersten Zuführabschnitts und der weiteren Fördereinrichtung des zweiten Zuführabschnitts eine gemeinsame Antriebsvorrichtung zugeordnet ist. Zur Ermöglichung der Weiterleitung der Antriebskraft der gemeinsamen Antriebsvorrichtung zwischen den beiden Fördereinrichtungen kann dabei vorgesehen sein, dass die beiden Fördereinrichtungen am Übergang vom ersten Zuführabschnitt zum zweiten Zuführabschnitt miteinander in Antriebsverbindung stehen. Dies kann beispielsweise dadurch bewerkstelligt werden, dass am Übergang vom ersten Zuführabschnitt zum zweiten Zuführabschnitt eine Umlenkeinheit angeordnet ist, welche sowohl die die Förderoberfläche der Fördereinrichtung des ersten Zuführabschnitts als auch die Förderoberfläche der weiteren Fördereinrichtung des zweiten Zuführabschnitts umlenkt.In order to achieve coordinated operation of the two conveying devices, it can further be provided that a common drive device is assigned to the conveying device of the first feed section and the further conveying device of the second feed section. To enable the driving force of the common drive device to be passed on between the two conveying devices, it can be provided that the two conveying devices are in drive connection with one another at the transition from the first feed section to the second feed section. This can be accomplished, for example, by arranging a deflection unit at the transition from the first feed section to the second feed section, which deflects both the conveying surface of the conveyor device of the first feed section and the conveying surface of the further conveyor device of the second feed section.

In Weiterbildung der Erfindung wird vorgeschlagen, dass die eine Fördereinrichtung oder/und die weitere Fördereinrichtung wenigstens einen Förderriemen umfasst, der beispielsweise von einem Zahnriemen gebildet ist. Dabei bildet die den Kartonzuschnitten zugewandte Fläche des wenigstens einen Förderriemens die Förderoberfläche bzw. einen Abschnitt der Förderoberfläche der einen Fördereinrichtung bzw. der weiteren Fördereinrichtung.In a development of the invention, it is proposed that the one conveyor device and / or the further conveyor device comprises at least one conveyor belt which is formed, for example, by a toothed belt. The surface of the at least one conveyor belt facing the carton blanks forms the conveying surface or a section of the conveying surface of the one conveying device or the further conveying device.

In diesem Zusammenhang kann ferner vorgesehen sein, dass die Umlenkeinheit eine drehbare Achse umfasst, auf der wenigstens ein dem Förderriemen des ersten Zuführabschnitts zugeordnetes Umlenkrad als auch ein der weiteren Fördereinrichtung des zweiten Zuführabschnitts zugeordnetes Umlenkrad angeordnet sind. Alternativ können die beiden Umlenkräder auch miteinander einstückig ausgebildet und mittels eines gemeinsamen Drehlagers drehbar gelagert sein. Im Falle des Einsatzes von Zahnriemen können die Umlenkräder als Zahnräder vorteilhafterweise ausgebildet sein. Die Antriebskombination Zahnriemen/Zahnrad ermöglicht dabei ein besonders präzises Antreiben der einen Fördereinrichtung oder/und der weiteren Fördereinrichtung.In this context, it can further be provided that the deflection unit comprises a rotatable axis, on which at least one deflection wheel assigned to the conveyor belt of the first feed section and also one deflection wheel assigned to the further conveyor device of the second feed section are arranged. Alternatively, the two deflection wheels can also be formed in one piece with one another and rotatably supported by means of a common pivot bearing. If toothed belts are used, the deflection wheels can advantageously be designed as toothed wheels. The Drive combination toothed belt / gear enables particularly precise driving of the one conveyor device and / or the other conveyor device.

In Weiterbildung der Erfindung wird vorgeschlagen, dass die Zuführvorrichtung wenigstens zwei Zuführeinheiten umfasst, von denen jede wenigstens einen dem ersten Zuführabschnitt zugeordneten Förderriemen und einen dem zweiten Zuführabschnitt zugeordneten Förderriemen aufweist, wobei diese Förderriemen an einem gemeinsamen Träger angeordnet sind. Vorteilhafterweise weisen die Förderriemen jeder Zuführeinheit die gleiche Breite auf.In a development of the invention, it is proposed that the feed device comprises at least two feed units, each of which has at least one conveyor belt assigned to the first feed section and one conveyor belt assigned to the second feed section, these conveyor belts being arranged on a common carrier. The conveyor belts of each feed unit advantageously have the same width.

Um einen störungsfreien Übergang der Kartonzuschnitte von dem ersten Zuführabschnitt zum zweiten Zuführabschnitt gewährleisten zu können, ist es vorteilhaft, wenn die Förderriemen am Übergang vom ersten Zuführabschnitt zum zweiten Zuführabschnitt einander benachbart angeordnet sind. Dabei ist es bevorzugt, wenn der Abstand der beiden Förderriemen kleiner ist als ihre Breite bzw. die Breite des schmaleren der beiden Förderriemen.In order to ensure a trouble-free transition of the carton blanks from the first feed section to the second feed section, it is advantageous if the conveyor belts are arranged adjacent to one another at the transition from the first feed section to the second feed section. It is preferred if the distance between the two conveyor belts is smaller than their width or the width of the narrower of the two conveyor belts.

Ferner kann die Zuführvorrichtung einen Rahmen umfassen, an welchem die wenigstens zwei Zuführeinheiten quer zur Förderrichtung relativ zueinander verlagerbar angeordnet sind. Dies ermöglicht es, die Zuführvorrichtung für flächige Elemente, insbesondere Kartonzuschnitte, unterschiedlicher Breite einzusetzen.Furthermore, the feed device can comprise a frame on which the at least two feed units are arranged such that they can be displaced relative to one another transversely to the conveying direction. This makes it possible to use the feed device for flat elements, in particular cardboard blanks, of different widths.

Abschließend sei darauf hingewiesen, dass der erste Zuführabschnitt, wie dies aus dem Stand der Technik an sich bekannt ist, vorteilhafterweise im Wesentlichen horizontal verlaufen kann. Dies erlaubt es, ihn in jeder gewünschten Länge auszubilden, ohne dass hierdurch ein Staudruck erzeugt würde, der sich auf die am Ende des zweiten Zuführabschnitts der Verpackungsvorrichtung benachbart angeordneten Kartonzuschnitten auswirken könnte.Finally, it should be pointed out that the first feed section, as is known per se from the prior art, can advantageously run essentially horizontally. This makes it possible to form it in any desired length without thereby creating a dynamic pressure which could affect the carton blanks arranged adjacent to the end of the second feed section of the packaging device.

Darüber hinaus kann der zweite Zuführabschnitt relativ zur Horizontalen einen Neigungswinkel von zwischen etwa 5° und etwa 40° aufweisen, wobei positive Winkelwerte eine in Förderrichtung zur Verpackungsvorrichtung abfallenden Verlauf des zweiten Zuführabschnitts angeben.In addition, the second feed section can have an inclination angle of between approximately 5 ° and approximately 40 ° relative to the horizontal, positive angle values indicating a course of the second feed section falling in the conveying direction to the packaging device.

Die Erfindung wird im Folgenden anhand der beigefügten Zeichnung an einem Ausführungsbeispiel näher erläutert werden. Es stellt dar:

Figur 1
eine perspektivische Darstellung einer erfindungsgemäßen Zuführvorrichtung;
Figur 2
eine Draufsicht der erfindungsgemäßen Zuführvorrichtung;
Figur 3
eine Seitenansicht der erfindungsgemäßen Zuführvorrichtung; und
Figur 4
eine schematische Darstellung des Aufbaus der Förderriemen der erfindungsgemäßen Zuführvorrichtung
The invention will be explained in more detail below with reference to the accompanying drawing using an exemplary embodiment. It shows:
Figure 1
a perspective view of a feed device according to the invention;
Figure 2
a plan view of the feed device according to the invention;
Figure 3
a side view of the feed device according to the invention; and
Figure 4
is a schematic representation of the structure of the conveyor belt of the feed device according to the invention

In den Figuren 1 bis 3 ist eine erfindungsgemäße Zuführvorrichtung ganz allgemein mit 10 bezeichnet. Sie dient zum Zuführen einer Mehrzahl von flächig aneinander anliegenden, flächigen Elementen 12 (siehe Figur 3), insbesondere Kartonzuschnitte, zu einer Verpackungsvorrichtung, deren Position in Figur 3 lediglich grob schematisch durch das Bezugszeichen V angedeutet ist.In the Figures 1 to 3 a feed device according to the invention is generally designated 10. It is used to feed a plurality of flat elements 12 lying flat against one another (see Figure 3 ), in particular cardboard blanks, to a packaging device, the position of which in Figure 3 is only roughly indicated schematically by the reference symbol V.

Die Zuführvorrichtung 10 umfasst zwei Zuführeinheiten 14 und 16, die bezüglich einer Längsmittelebene E (siehe Figur 2) der Zuführvorrichtung 10 spiegelsymmetrisch angeordnet, ansonsten aber identisch ausgebildet sind. Daher wird der Aufbau der Zuführeinheiten 14 und 16 im Folgenden lediglich am Beispiel der Zuführeinheit 14 beschrieben werden.The feed device 10 comprises two feed units 14 and 16, which with respect to a longitudinal center plane E (see Figure 2 ) of the feed device 10 are arranged mirror-symmetrically, but are otherwise identical. Therefore, the construction of the feed units 14 and 16 will be described in the following only using the example of the feed unit 14.

Die Zuführeinheit 14 und damit auch die Zuführvorrichtung 10 umfasst zwei Zuführabschnitte 18 und 20, von denen jeder einen Förderriemen 22 bzw. 24 aufweist, die beide bevorzugt von einem Zahnriemen gebildet sind. Der Förderriemen 22 wird dabei von einer Antriebseinrichtung 26 angetrieben, welche am besten in Figur 3 zu erkennen ist und auf ein Antriebsrad 28 einwirkt.The feed unit 14 and thus also the feed device 10 comprises two feed sections 18 and 20, each of which has a conveyor belt 22 or 24, both of which are preferably formed by a toothed belt. The conveyor belt 22 is driven by a drive device 26, which is best in Figure 3 can be seen and acts on a drive wheel 28.

Die Antriebseinrichtung 26 ist in dem dargestellten Ausführungsbeispiel von einer Zylinder-Kolben-Einheit 27 gebildet, die bei jeder Betätigung das Antriebsrad 28 über einen mit der Kolbenstange 30 verbundenen Hebel 32 um einen vorbestimmten Winkel in Figur 3 entgegen dem Uhrzeigersinn dreht, und damit das obere Trum 22a des Förderriemens 22 um eine vorbestimmte Distanz in Förderrichtung F, d.h. auf die Verpackungsvorrichtung V zu bewegt. Beim Rückhub der Zylinder-Kolben-Einheit 27 sorgt ein (nicht dargestellter) Freilauf dafür, dass das Antriebsrad 28 in seiner Position verharrt.In the exemplary embodiment shown, the drive device 26 is formed by a cylinder-piston unit 27, which actuates the drive wheel 28 every time it is actuated by a lever 32 connected to the piston rod 30 by a predetermined angle Figure 3 rotates counterclockwise, and thus the upper run 22a of the conveyor belt 22 moves by a predetermined distance in the conveying direction F, ie towards the packaging device V. On the return stroke of the cylinder-piston unit 27, a freewheel (not shown) ensures that the drive wheel 28 remains in its position.

Am Übergang vom ersten Zuführabschnitt 18 zum zweiten Zuführabschnitt 20 ist ein Umlenkrad 34 für den Förderriemen 22 angeordnet. Dieses Umlenkrad 34 ist auf der gleichen Achse angeordnet wie ein Umlenkrad 36 des zweiten Förderriemens 24. Die beiden Umlenkräder 34 und 36 sind dabei drehfest miteinander verbunden, sodass die Antriebsbewegung des Förderriemens 22 auf den Förderriemen 24 übertragen werden kann. Auf diese Weise braucht für den Förderriemen 24 keine gesonderte Antriebseinrichtung vorgesehen zu werden. Der Vollständigkeit halber sei auch noch das Umlenkrad 38 des zweiten Förderriemens 24 erwähnt, das an dem der Verpackungsvorrichtung V zugewandten Ende der Zuführvorrichtung 10 angeordnet ist.A deflection wheel 34 for the conveyor belt 22 is arranged at the transition from the first feed section 18 to the second feed section 20. This deflection wheel 34 is arranged on the same axis as a deflection wheel 36 of the second conveyor belt 24. The two deflection wheels 34 and 36 are rotatably connected to one another, so that the drive movement of the conveyor belt 22 can be transmitted to the conveyor belt 24. In this way, no separate drive device needs to be provided for the conveyor belt 24. For the sake of completeness, the deflection wheel 38 of the second conveyor belt 24 is also mentioned, which is arranged on the end of the feed device 10 facing the packaging device V.

Nachzutragen ist an dieser Stelle, dass die Oberfläche 22a1 des oberen Trums 22a des Förderriemen 22 und die Oberfläche 24a1 des oberen Trums 24a des Förderriemens 24 jeweils eine Förderoberfläche bilden, auf der die Kartonzuschnitte 12 im Betrieb der Zuführvorrichtung 10, d.h. auf ihrem Weg zur Verpackungsvorrichtung V aufstehen, und zwar, wie aus Figur 3 zu ersehen ist, mit ihren Umfangskanten.It should be added at this point that the surface 22a1 of the upper run 22a of the conveyor belt 22 and the surface 24a1 of the upper run 24a of the conveyor belt 24 each form a conveying surface on which the carton blanks 12 operate, that is to say on their way, during the operation of the feed device 10 get up to the packaging device V, as from Figure 3 can be seen with their peripheral edges.

Beide Förderriemen 22 und 24 können als Zahnriemen ausgebildet sein, in welchem Fall die Umlenkräder 28, 34, 36 und 38 als Zahnräder ausgebildet sind. Wie in Figur 4 schematisch dargestellt ist, umfassen beide Förderriemen 22 und 24 eine erste Lage 40, die dem Kontakt mit den Umlenkräder 28, 34, 36 und 38 dient und im Falle der Ausbildung der Förderriemen als Zahnriemen auch deren Verzahnung 42 trägt. Darüber hinaus umfassen beide Förderriemen 22 und 24 eine zweite Lage 44, die mit den Kartonzuschnitten 12 in Kontakt tritt. Erfindungsgemäß ist die zweite Lage 44 des Förderriemens 22 aus einem Material gebildet, das einen höheren Haftreibungskoeffizienten aufweist als das Material der zweiten Lage 44 des Förderriemens 24. Beispielsweise kann die zweite Lage 44 des Förderriemens 22 aus Polyurethan gebildet sein, während die zweite Lage 44 des Förderriemens 24 aus Teflon gebildet sein kann.Both conveyor belts 22 and 24 can be designed as toothed belts, in which case the deflection wheels 28, 34, 36 and 38 are designed as toothed wheels. As in Figure 4 Is shown schematically, both conveyor belts 22 and 24 comprise a first layer 40, which serves the contact with the deflection wheels 28, 34, 36 and 38 and in the case of the formation of the conveyor belt as a toothed belt also carries their teeth 42. In addition, both conveyor belts 22 and 24 comprise a second layer 44 which comes into contact with the cardboard blanks 12. According to the invention, the second layer 44 of the conveyor belt 22 is formed from a material which has a higher coefficient of static friction than the material of the second layer 44 of the conveyor belt 24. For example, the second layer 44 of the conveyor belt 22 can be formed from polyurethane, while the second layer 44 of the Conveyor belt 24 can be formed from Teflon.

Wie insbesondere in Figur 3 zu erkennen ist, verläuft der erste Zuführabschnitt 18 im Wesentlichen horizontal, während der zweite Zuführabschnitt 20 in Förderrichtung F abfällt. Dabei beträgt der Neigungswinkel α vorzugsweise zwischen etwa 5° und etwa 40°.As especially in Figure 3 can be seen, the first feed section 18 runs essentially horizontally, while the second feed section 20 drops in the conveying direction F. The angle of inclination α is preferably between approximately 5 ° and approximately 40 °.

An dieser Stelle sei darauf hingewiesen, dass die Förderriemen 22 der ersten Zuführabschnitte 18 der beiden Fördereinheiten 14 und 16 und die zum Antrieb dieser Förderriemen 22 erforderlichen weiteren Elemente gemeinsam eine erste Fördereinrichtung 46 der Zuführvorrichtung 10 bilden, während die Förderriemen 24 der zweiten Zuführabschnitte 20 und die zu deren Antrieb erforderlichen weiteren Elemente gemeinsam eine zweite Fördereinrichtung 48 der Zuführvorrichtung 10 bilden (siehe Figur 2).At this point it should be pointed out that the conveyor belts 22 of the first feed sections 18 of the two conveyor units 14 and 16 and the further elements required to drive these conveyor belts 22 together form a first conveyor device 46 of the feed device 10, while the conveyor belts 24 of the second feed sections 20 and the further elements required to drive them together form a second conveyor device 48 of the feed device 10 (see Figure 2 ).

Wie man insbesondere in Figur 2 erkennt, sind die beiden Förderriemen 22 und 24 im Bereich des Übergangs vom ersten Zuführabschnitt 18 zum zweiten Zuführabschnitt 20 einander unmittelbar benachbart angeordnet. Sie liegen dabei aber vorzugsweise nicht aneinander an, da dies zu Verschleiß führen würde, sondern weisen voneinander einen Abstand auf, der kleiner ist als die Breite b der beiden Förderriemen 22 und 24 (siehe Figur 2).How to get in particular Figure 2 recognizes, the two conveyor belts 22 and 24 are in the region of the transition from the first feed section 18 to the second Feed section 20 arranged immediately adjacent to each other. However, they are preferably not in contact with one another, since this would lead to wear, but are at a distance from one another which is smaller than the width b of the two conveyor belts 22 and 24 (see Figure 2 ).

Nachzutragen ist noch, dass die beiden Zuführeinheiten 14 und 16 als in sich abgeschlossene Baugruppen ausgebildet sind, welche an einem Rahmen 50 der Zuführvorrichtung 10 in Querrichtung Q, d.h. orthogonal zur Förderrichtung F, relativ zueinander verstellbar angeordnet sind. Hierzu sind sämtliche Bauteile der Zuführeinheiten 14 und 16, d.h. die Förderbänder 22 und 24, sowie sämtliche zu deren Antrieb erforderlichen Elemente, an einem gemeinsamen Träger 52 angeordnet.It must also be added that the two feed units 14 and 16 are designed as self-contained assemblies which are attached to a frame 50 of the feed device 10 in the transverse direction Q, i.e. are arranged orthogonally to the conveying direction F, adjustable relative to each other. For this purpose, all components of the feed units 14 and 16, i.e. the conveyor belts 22 and 24, and all the elements required to drive them, are arranged on a common carrier 52.

Claims (14)

  1. Device (10) for feeding a plurality of planar elements (12) which lie flat on one another, in particular cardboard blanks, to a packaging device (V), comprising:
    • a first feed portion (18) having a conveying apparatus (46), of which the conveying surface (22a1), which is intended to support the planar elements (12), is made of a material which has a predetermined static friction coefficient with respect to the interaction with the planar elements (12), and
    • a second feed portion (20) which slopes downwards towards the packaging device (V),
    the inclination of the first feed portion (18) and the inclination of the second feed portion (20) towards the packaging device (V) being different from one another, the second feed portion (20) having a further conveying apparatus (48), characterised in that a conveying surface (24a1) of the further conveying apparatus (48) that is intended to support the planar elements (12) is made of a material, of which the static friction coefficient with respect to the interaction with the planar elements (12) has a lower value than the material of the conveying apparatus (46) of the first feed portion (18).
  2. Feed device according to claim 1, characterised in that the static friction coefficient of the conveying surface (24a1) of the further conveying apparatus (48) is selected such that the static friction between the conveying surface (24a1) and the planar elements (12) during a conveying cycle of the further conveying apparatus (48) is overcome, resulting in slip between the conveying surface (24a1) and the planar elements (12).
  3. Feed device according to either claim 1 or claim 2, characterised in that the conveying surface (22a1) of the conveying apparatus (46) of the first feed portion (18) is made of polyurethane and/or in that the conveying surface (24a1) of the further conveying apparatus (48) of the second feed portion (20) is made of Teflon.
  4. Feed device according to any of the preceding claims, characterised in that a common drive device (26) is associated with the conveyor apparatus (46) of the first feed portion (18) and the further conveying apparatus (48) of the second feed portion (20).
  5. Feed device according to claim 4, characterised in that the two conveying apparatuses (46, 48) are in driving engagement with one another at the transition from the first feed portion (18) to the second feed portion (20).
  6. Feed device according to either claim 4 or 5, characterised in that a deflection unit (34, 36) is arranged at the transition from the first feed portion (18) to the second feed portion (20), which deflection unit deflects both the conveying surface (22a1) of the conveying apparatus (46) of the first feed portion (18) and the conveying surface (24a1) of the further conveying apparatus (48) of the second feed portion (20).
  7. Feed device according to claim 6, characterised in that the deflection unit (34, 36) comprises a rotatable shaft on which at least one deflection wheel (34) associated with the conveying apparatus (46) of the first feed portion (18) and a deflection wheel (36) associated with the further conveying apparatus (48) of the second feed portion (20) are arranged.
  8. Feed device according to any of the preceding claims, characterised in that one conveying apparatus (46) and/or the further conveying apparatus (48) comprises at least one conveyor belt (22, 24) which is formed, for example, by a toothed belt.
  9. Feed device according to either claim 7 or claim 8, characterised in that it comprises at least two feed units (14, 16), each of which has at least one conveyor belt (22) associated with the first feed portion (18) and one conveyor belt (24) associated with the second feed portion (20), said conveyor belts (22, 24) being arranged on a common carrier (52).
  10. Feed device according to claim 9, characterised in that the conveyor belts (22, 24) of at least one feed unit (14, 16) have the same width (b).
  11. Feed device according to either claim 9 or claim 10, characterised in that the conveyor belts (22, 24) are arranged adjacent to one another at the transition from the first feed portion (18) to the second feed portion (20).
  12. Feed device according to any of claims 9 to 11, characterised in that it comprises a frame (50) on which the at least two feed units (14, 16) are arranged so as to be movable relative to one another transversely to the conveying direction (F).
  13. Feed device according to any of the preceding claims, characterised in that the first feed portion (18) extends substantially horizontally.
  14. Feed device according to any of the preceding claims, characterised in that the second feed portion (20) has an angle of inclination (α) of between approximately 5° and approximately 40° relative to the horizontal.
EP17772692.4A 2016-09-23 2017-09-22 Apparatus for feeding a plurality of flat elements lying flat on one another, in particular carton blanks, to a packaging apparatus Active EP3515847B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016005874.7U DE202016005874U1 (en) 2016-09-23 2016-09-23 Apparatus for feeding a plurality of flat abutting flat elements, in particular carton blanks, to a packaging device
PCT/EP2017/074086 WO2018055103A1 (en) 2016-09-23 2017-09-22 Apparatus for feeding a plurality of flat elements lying flat on one another, in particular carton blanks, to a packaging apparatus

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EP3515847A1 EP3515847A1 (en) 2019-07-31
EP3515847B1 true EP3515847B1 (en) 2020-07-29

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US20190193885A1 (en) 2019-06-27
EP3515847A1 (en) 2019-07-31
DE202016005874U1 (en) 2016-10-19
WO2018055103A1 (en) 2018-03-29
US10773909B2 (en) 2020-09-15

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