EP1775114A1 - Device for folding folding carton blanks - Google Patents

Device for folding folding carton blanks Download PDF

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Publication number
EP1775114A1
EP1775114A1 EP06400028A EP06400028A EP1775114A1 EP 1775114 A1 EP1775114 A1 EP 1775114A1 EP 06400028 A EP06400028 A EP 06400028A EP 06400028 A EP06400028 A EP 06400028A EP 1775114 A1 EP1775114 A1 EP 1775114A1
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EP
European Patent Office
Prior art keywords
folding
station
alignment
endless belt
transport direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06400028A
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German (de)
French (fr)
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EP1775114B1 (en
Inventor
Stefan Furthmüller
Armin Haag
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.)
Wilhelm Bahmueller Maschinenbau Praezisionswerkzeuge GmbH
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Wilhelm Bahmueller Maschinenbau Praezisionswerkzeuge GmbH
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Publication of EP1775114A1 publication Critical patent/EP1775114A1/en
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Publication of EP1775114B1 publication Critical patent/EP1775114B1/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
    • 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
    • B31B50/003—Straightening the side walls of boxes; Squaring collapsed folded box blanks; Deforming boxes
    • 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
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • 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
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B31B2100/002—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed
    • B31B2100/0022—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed made from tubular webs or blanks, including by tube or bottom forming operations
    • 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
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/30—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • 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
    • 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
    • B31B50/10—Feeding or positioning webs
    • B31B50/12—Feeding or positioning webs by air pressure or suction

Definitions

  • the invention relates to a device for folding folding carton blanks to form a folding carton tube in a folding station, which adjoins a stacking station located downstream in the transporting direction.
  • Such a device is for example from the DE-A-102 41 448 known.
  • a folding carton blank is folded in a folding station such that two side flaps are folded onto a central piece, thereby forming a folding carton tube.
  • This carton tube is led out of the folding station and into a stacking station, where the folded carton blanks are stacked into a package.
  • the folded folding box blanks in particular the folded-in side flaps, are fastened to one another by means of gluing, stapling or by means of an adhesive tape, so that a closed folded box tube is produced.
  • the transport of the folded carton blanks is effected by two transport fingers attached to a transport chain engaging the rear end of the carton blank and pushing the carton blank through the individual stations.
  • a defined position of the folding carton blank both in its unfolded and in its folded state is not guaranteed in this device.
  • the folded side flaps, if they are not folded exactly at right angles, are connected to each other at an angle, so that the carton tube takes on the erection of the carton not cylindrical but a frusto-conical shape.
  • the invention is therefore based on the object to provide a device for folding folding carton blanks, in which it is ensured that the folded or folded side flaps occupy the desired position.
  • This object is achieved in a device of the type mentioned in the present invention, that between the folding station and the stacking an alignment station for the folded on the center piece of the folding box side flaps is provided.
  • the apparatus according to the invention is located between the folding station and the stacking an alignment station, in which the inclination of the side flaps is corrected.
  • the folding box blank with its folded-in side flaps when connecting the two side flaps with each other, that is in the gluing station or stitching station is folded exactly.
  • with printed cartons is now also guaranteed that there is no shift in the print image in the transition from one side flap to the other.
  • At least one, in particular two, are in the alignment station Vacuum conveyor belts provided for transporting the folded carton blank by the alignment station.
  • the vacuum conveyor belts have opposite transport chains with protruding transport finders, as in DE-A-102 41 448 described, the significant advantage that they hold the folded box blank defined, so that no relative movement between the carton blank and the conveyor belt can occur.
  • the folding carton blank permanently assumes a defined position as it passes through the aligning station, so that any misalignment of the side flaps can be corrected during the entire run.
  • the misalignments of the side flaps are corrected by, for example, aligning in the same direction side edges of the center piece and side flaps are aligned parallel to each other. But this is only possible if the middle piece is positioned defined within the alignment station.
  • a sensor for determining the position of the rear and / or front edge of the center piece in the transport direction is provided.
  • the sensor can be arranged, for example, in the folding station. By means of the sensor it is determined where the center piece of the folding box blank is located with respect to the vacuum conveyor belts. As between the Vacuum conveyor belts and the sucked center no relative movement takes place, the position of the center is known throughout the run.
  • At least one, in particular two Ausrichtnocken, provided in the alignment station, which are independently of each other and / or by the transport speed of a Faltschachtelzusammlung transporting transport system, for example, a vacuum conveyor belt, to the rear in the transport direction edge of the center can be moved.
  • the alignment cams are thus brought within the alignment station to the rear edge of the center piece of Faltschachtelzuites and take the side flap, if this protrudes beyond the rear edge of the center piece. This aligns the rear edge of the side flap with respect to the rear edge of the center piece.
  • the approach of the alignment cam takes place in that it is accelerated to the rear edge of the center piece and is slowed down in the immediate vicinity of the rear edge and before reaching it so far that it is brought in only slowly. As soon as it touches the rear edge of the center piece, it becomes at the same speed as the transport speed of the folding carton blank. This position of the alignment cam is maintained until the carton blank has been grabbed by a subsequent station or until the two side flaps have been joined together.
  • the alignment cam is attached to an endless belt.
  • the endless belt is aligned with a strand parallel to the transport direction of the folded Faltschachtelzuitess.
  • This endless belt is advantageously located above the folding box blank, that is, on the other side, the vacuum conveyor belt. Since the alignment cam is attached to a separate transport means, namely the endless belt, the alignment cam can be moved completely independently of the transport speed of the folding box.
  • Another advantage is that a plurality of alignment cams are provided on the endless belt. This allows a very high transport speed and very high transport density can be achieved, and it can carton blanks of different sizes are transported.
  • the alignment cams are free, i. placeable on the endless belt according to the customer's request or according to the requirements of the size of the folding carton blank.
  • the endless belt is parallel to the rear edge of the folding box blank, i. orthogonal to the transport direction is adjustable. In this way, the endless belt can be positioned so that the alignment cam abuts exactly at a desired location of the folding box blank. With several endless belts, these can be adjusted to different widths of folding carton blanks. As a rule, two endless belts are sufficient, which are arranged side by side.
  • the drive of the endless belt is a servomotor.
  • the control of this servomotor receives the position of the rear edge of the Center piece defining data from a position sensor, due to which the endless belt is driven so that the stop cam shifts the side flaps, but otherwise does not deform the Faltschachtelzuites.
  • the vacuum conveyor belt in the region of the alignment station has a reduced holding force for the folding box blank. Due to the reduced holding force there is the possibility that not only corrects the position of the side flaps over the or the alignment cams, but also the position of the folded carton blank within the alignment and thus on the vacuum conveyor belts is corrected. In this case, the reduction of the holding force can take place only over part of the path through the alignment station, e.g. in the alignment of the alignment cam at the center, i. after the correction of the side flaps.
  • the suction openings of the vacuum conveyor belt are partially closed, for example by means of a diaphragm.
  • the diaphragm may be a sheet metal strip running essentially parallel to the transport direction, in particular displaceably arranged.
  • the length of the sheet metal strip defines the size of the region with reduced holding force and the degree of coverage of the suction openings determines the size of the holding force.
  • Another embodiment provides that the suction openings of the vacuum conveyor belt in the region of the alignment are assigned to a plurality of vacuum chambers and the vacuum chambers have different negative pressures. By adjusting the negative pressure in the vacuum chambers, the size of the holding force is controlled.
  • FIG. 1 shows a flow chart during the passage of a folded folding box blank 10 through an alignment station designated as a whole by 12 after a device 18 in which the folding box blanks 10 have been folded.
  • an arrow 16 the passage direction or transport direction of the folding box blanks 10 is indicated.
  • the transport direction 16 is located in front of the alignment station 12, the suggestively shown folding station 18 and behind the alignment station 12 an intermediate station 20, with which, for example, the transport speed of the folding box blanks 10 can be changed.
  • Behind the intermediate station 20 is a likewise only hintedly illustrated stacking station 22 or packing station.
  • FIG. 1 a the front edge of a folding carton blank 10 is gripped by a vacuum conveyor belt 24 and the blank 10 is guided in the direction of the arrow 16 under a lower strand 26 of an endless belt 28.
  • the transport speed of the endless belt 28 is reduced so that the alignment cam 30 is only slightly faster than the transport speed 16 of the folding box blank 10. This is shown in Figure 1c.
  • the alignment cam 30 contacts the trailing edge 32 of the center piece 34, it has the same speed as the center piece 34.
  • the position of the center piece 34, in particular the trailing edge 32 of the center piece 34, is previously detected by a sensor 36, for example is located in the folding station 18.
  • the alignment cam 30 is carried along at the trailing edge 32 of the middle piece 34 until the folding box blank 10 has been moved away from the intermediate station 20, for example, by a stopper circulating tether 38 has been gripped and is at least partially retracted into the intermediate station 20.
  • the endless belt 28 is then braked slightly, so that a distance between the alignment cam 30 and the rear edge 32 of the middle piece 34 and the folding box blank 10 is created.
  • the alignment cam 30 can now be lifted off the plane of the folding box blank 10 without the position of the folding box blank 10 being adversely affected by the alignment cam 30.
  • Another possibility for spacing the rear edge 32 and alignment cams 30 is that the folding box blank 10 is retracted accelerated in the intermediate station 20.
  • the endless belt 28 is now activated in such a way that the alignment cam 30 located in the region of the rear edge 32 of the following folding carton blank 10 is accelerated again to this rear edge 32.
  • FIG. 2 shows a plan view of the two vacuum conveyor belts 24, which are provided with suction openings 40, via which the folding box blank 10 is held in the region of the longitudinal sides of the center piece 34 on the vacuum conveyor belt 24, so that he without Relative movement is transported to the vacuum conveyor belt 24 in the direction of arrow 16.
  • the folding box blank 10 is folded, since two side flaps 42 and 44 are opened on the middle piece 34, which overlap slightly at their side edges facing each other.
  • the suction openings 40 of the vacuum conveyor belts 24 are partially covered by a panel 52, namely a metal strip 54. This will cause the intake cross section reduces, which also affects the holding force with which the center piece 34 is held on the vacuum conveyor belt 24, ie reduced.
  • the shutter 52 By shifting the shutter 52 in a direction of the double arrow 56, the suction force can be adjusted to a desired value.
  • the arrows 58 indicate in FIG. 3 that the alignment cams 30 can be positioned parallel to the rear edge 32 in such a way that they are optimally positioned on the rear edges 48 and 50 of the side flaps 42 and 44, that is to say in the region of the mutually facing free edges. attack. In this way, the positions of the side flaps 42 and 44 are corrected without deformation of the rear edge 48 and 50.
  • Faltschachtelzuitese 10 can be processed with the device according to the invention, in particular the positions of the side flaps 42 and 44 are corrected, which have an excess length, that is whose length is greater than the distance between two alignment cams 30 on the Endlosband 28.
  • the Ausrichtnocken 30 after the position correction of the two side flaps 42 and 44 earlier than shown in Figure 1f, braked and optionally counter to the transport direction 16 by the direction of rotation of the endless belt 28 is reversed.
  • the endless belt 28 is brought into a position in which the subsequent Faltschachtelzuites 10 can pass under both the front Ausrichtnocken 30 and under the rear Ausrichtnocken 30.
  • the two Ausrichtnocken 30 are in the horizontal direction from the endless belt 28. As soon as the rear end 32 of the subsequent folding carton blank 10 has traversed the rear end of the endless belt 28, the rear alignment cam 30 is brought to the rear end 32 of this folding carton blank 10, as described above.
  • the side flaps 42 and 44 of a folding box blank 10 are optimally aligned, so that when erecting the folding box this can take the desired shape.

Abstract

Device has a de-piling station lying downstream in transport direction. An alignment station is provided between the folding station and the de-piling station for lateral flaps (42,44), which are folded on a centerpiece (34) of foldable box blank (10).

Description

Die Erfindung betrifft eine Vorrichtung zum Falten von Faltschachtelzuschnitten zu einem Faltschachtelschlauch in einer Faltstation, welcher sich eine in Transportrichtung stromabwärts liegende Abstapelstation anschließt.The invention relates to a device for folding folding carton blanks to form a folding carton tube in a folding station, which adjoins a stacking station located downstream in the transporting direction.

Eine derartige Vorrichtung ist zum Beispiel aus der DE-A-102 41 448 bekannt. In dieser Vorrichtung wird ein Faltschachtelzuschnitt in einer Faltstation derart gefaltet, dass zwei Seitenklappen auf ein Mittelstück aufgeklappt werden und dadurch ein Faltschachtelschlauch entsteht. Dieser Faltschachtelschlauch wird aus der Faltstation heraus und in eine Abstapelstation geführt, wo die gefalteten Faltschachtelzuschnitte zu einem Paket gestapelt werden. Zuvor werden die gefalteten Faltschachtelzuschnitte, insbesondere die eingeklappten Seitenklappen mittels einer Verklebung, Verklammerung oder mittels eines Klebebandes aneinander befestigt, so dass ein geschlossener Faltschachtelschlauch entsteht. Der Transport der gefalteten Faltschachtelzuschnitte erfolgt dadurch, dass zwei an einer Transportkette befestigte Transportfinger am hinteren Ende des Faltschachtelzuschnitts angreifen und den Faltschachtelzuschnitt durch die einzelnen Stationen schieben. Eine definierte Position des Faltschachtelzuschnitts sowohl in seinem ausgeklappten, als auch in seinem gefalteten Zustand ist bei dieser Vorrichtung nicht garantiert. Außerdem besteht die Gefahr, dass die eingeklappten Seitenklappen, falls sie nicht exakt im rechten Winkel umgelegt werden, schräg miteinander verbunden werden, so dass der Faltschachtelschlauch beim Aufrichten des Kartons keine zylindrische sondern eine kegelstumpfförmige Form annimmt.Such a device is for example from the DE-A-102 41 448 known. In this device, a folding carton blank is folded in a folding station such that two side flaps are folded onto a central piece, thereby forming a folding carton tube. This carton tube is led out of the folding station and into a stacking station, where the folded carton blanks are stacked into a package. Beforehand, the folded folding box blanks, in particular the folded-in side flaps, are fastened to one another by means of gluing, stapling or by means of an adhesive tape, so that a closed folded box tube is produced. The transport of the folded carton blanks is effected by two transport fingers attached to a transport chain engaging the rear end of the carton blank and pushing the carton blank through the individual stations. A defined position of the folding carton blank both in its unfolded and in its folded state is not guaranteed in this device. In addition, there is a risk that the folded side flaps, if they are not folded exactly at right angles, are connected to each other at an angle, so that the carton tube takes on the erection of the carton not cylindrical but a frusto-conical shape.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zum Falten von Faltschachtelzuschnitten bereit zu stellen, bei welcher gewährleistet ist, dass die um- oder eingeklappten Seitenklappen die gewünschte Lage einnehmen.The invention is therefore based on the object to provide a device for folding folding carton blanks, in which it is ensured that the folded or folded side flaps occupy the desired position.

Diese Aufgabe wird bei einer Vorrichtung der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass zwischen der Faltstation und der Abstapelstation eine Ausrichtstation für die auf das Mittelstück des Faltschachtelzuschnitts aufgefalteten Seitenklappen vorgesehen ist.This object is achieved in a device of the type mentioned in the present invention, that between the folding station and the stacking an alignment station for the folded on the center piece of the folding box side flaps is provided.

Bei der erfindungsgemäßen Vorrichtung befindet sich zwischen der Faltstation und der Abstapelstation eine Ausrichtstation, in welcher die Schrägstellung der Seitenklappen korrigiert wird. Auf diese Weise wird sichergestellt, dass der Faltschachtelzuschnitt mit seinen eingeklappten Seitenklappen beim Verbinden der beiden Seitenklappen miteinander, das heißt in der Klebestation oder Heftstation, exakt gefaltet ist. Dadurch wird gewährleistet, dass beim Aufrichten des Kartons, das heißt beim Ausklappen des Faltschachtelschlauchs, dieser eine zylindrische Form einnimmt und die Form der Faltschachtel korrekt ist. Insbesondere bei bedruckten Faltschachteln ist nunmehr auch gewährleistet, dass beim Übergang von der einen Seitenklappe auf die andere keine Verschiebung im Druckbild vorliegt.In the apparatus according to the invention is located between the folding station and the stacking an alignment station, in which the inclination of the side flaps is corrected. In this way it is ensured that the folding box blank with its folded-in side flaps when connecting the two side flaps with each other, that is in the gluing station or stitching station, is folded exactly. This ensures that when erecting the carton, that is, when unfolding the carton tube, this assumes a cylindrical shape and the shape of the carton is correct. In particular, with printed cartons is now also guaranteed that there is no shift in the print image in the transition from one side flap to the other.

Bei einer bevorzugten Ausführungsform sind in der Ausrichtstation wenigstens ein, insbesondere zwei Vakuumtransportbänder zum Transport des gefalteten Faltschachtelzuschnitts durch die Ausrichtstation vorgesehen. Die Vakuumtransportbänder besitzen gegenüber Transportketten mit abragenden Transportfindern, wie in der DE-A-102 41 448 beschrieben, den wesentlichen Vorteil, dass sie den Faltschachtelzuschnitt definiert festhalten, so dass keine Relativbewegung zwischen dem Faltschachtelzuschnitt und dem Transportband auftreten kann. Der Faltschachtelzuschnitt nimmt beim Durchlauf durch die Ausrichtstation permanent eine definierte Lage ein, so dass eventuelle Fehlstellungen der Seitenklappen während des gesamten Durchlaufs korrigiert werden können. Die Fehlstellungen der Seitenklappen werden dadurch korrigiert, dass zum Beispiel in gleicher Richtung verlaufende Seitenkanten von Mittelstück und Seitenklappen parallel zueinander ausgerichtet werden. Dies ist aber nur dann möglich, wenn das Mittelstück innerhalb der Ausrichtstation definiert positioniert ist.In a preferred embodiment, at least one, in particular two, are in the alignment station Vacuum conveyor belts provided for transporting the folded carton blank by the alignment station. The vacuum conveyor belts have opposite transport chains with protruding transport finders, as in DE-A-102 41 448 described, the significant advantage that they hold the folded box blank defined, so that no relative movement between the carton blank and the conveyor belt can occur. The folding carton blank permanently assumes a defined position as it passes through the aligning station, so that any misalignment of the side flaps can be corrected during the entire run. The misalignments of the side flaps are corrected by, for example, aligning in the same direction side edges of the center piece and side flaps are aligned parallel to each other. But this is only possible if the middle piece is positioned defined within the alignment station.

Bei einer Weiterbildung ist vorgesehen, dass ein Sensor zur Positionsbestimmung der in Transportrichtung hinteren und/oder vorderen Kante des Mittelstücks vorgesehen ist. Dabei kann der Sensor zum Beispiel in der Faltstation angeordnet sein. Mittels des Sensors wird bestimmt, wo sich das Mittelstück des Faltschachtelzuschnitts bezüglich der Vakuumtransportbänder befindet. Da zwischen den Vakuumtransportbändern und dem angesaugten Mittelstück keine Relativbewegung stattfindet, ist die Position des Mittelstücks während des gesamten Durchlaufs bekannt.In a further development, it is provided that a sensor for determining the position of the rear and / or front edge of the center piece in the transport direction is provided. In this case, the sensor can be arranged, for example, in the folding station. By means of the sensor it is determined where the center piece of the folding box blank is located with respect to the vacuum conveyor belts. As between the Vacuum conveyor belts and the sucked center no relative movement takes place, the position of the center is known throughout the run.

Bei einem bevorzugten Ausführungsbeispiel sind in der Ausrichtstation wenigstens ein, insbesondere zwei Ausrichtnocken, vorgesehen, die unabhängig voneinander und/oder von der Transportgeschwindigkeit eines den Faltschachtelzuschnitt transportierenden Transportsystems, zum Beispiel ein Vakuumtransportband, an die in Transportrichtung hintere Kante des Mittelstücks heranführbar sind. Die Ausrichtnocken werden also innerhalb der Ausrichtstation an die hintere Kante des Mittelstücks des Faltschachtelzuschnitts herangeführt und nehmen die Seitenklappe mit, falls diese über die hintere Kante des Mittelstücks vorsteht. Dadurch wird die hintere Kante der Seitenklappe bezüglich der hinteren Kante des Mittelstücks ausgerichtet.In a preferred embodiment, at least one, in particular two Ausrichtnocken, provided in the alignment station, which are independently of each other and / or by the transport speed of a Faltschachtelzuschnitt transporting transport system, for example, a vacuum conveyor belt, to the rear in the transport direction edge of the center can be moved. The alignment cams are thus brought within the alignment station to the rear edge of the center piece of Faltschachtelzuschnitt and take the side flap, if this protrudes beyond the rear edge of the center piece. This aligns the rear edge of the side flap with respect to the rear edge of the center piece.

Das Heranführen des Ausrichtnockens erfolgt dadurch, dass dieser beschleunigt an die hintere Kante des Mittelstücks herangeführt wird und in unmittelbarer Nähe zur hinteren Kante und vor Erreichen derselben so weit abgebremst wird, dass er nur noch langsam herangeführt wird. Sobald er die hintere Kante des Mittelstücks berührt, wird er mit gleicher Geschwindigkeit wie die Transportgeschwindigkeit des Faltschachtelzuschnitts verfahren. Diese Position des Ausrichtnockens wird so lange beibehalten, bis der Faltschachtelzuschnitt von einer nachfolgenden Station ergriffen worden ist oder bis die beiden Seitenklappen miteinander verbunden wurden.The approach of the alignment cam takes place in that it is accelerated to the rear edge of the center piece and is slowed down in the immediate vicinity of the rear edge and before reaching it so far that it is brought in only slowly. As soon as it touches the rear edge of the center piece, it becomes at the same speed as the transport speed of the folding carton blank. This position of the alignment cam is maintained until the carton blank has been grabbed by a subsequent station or until the two side flaps have been joined together.

Bei einem bevorzugten Ausführungsbeispiel ist der Ausrichtnocken an einem Endlosband befestigt. Außerdem ist das Endlosband mit einem Trum parallel zur Transportrichtung des gefalteten Faltschachtelzuschnitts ausgerichtet. Dieses Endlosband befindet sich vorteilhaft oberhalb des Faltschachtelzuschnitts, das heißt auf der anderen Seite das Vakuumtransportband. Da der Ausrichtnocken an einem separaten Transportmittel, nämlich dem Endlosband befestigt ist, kann der Ausrichtnocken völlig unabhängig von der Transportgeschwindigkeit der Faltschachtel bewegt werden.In a preferred embodiment, the alignment cam is attached to an endless belt. In addition, the endless belt is aligned with a strand parallel to the transport direction of the folded Faltschachtelzuschnitts. This endless belt is advantageously located above the folding box blank, that is, on the other side, the vacuum conveyor belt. Since the alignment cam is attached to a separate transport means, namely the endless belt, the alignment cam can be moved completely independently of the transport speed of the folding box.

Sind mehrere Endlosbänder nebeneinander angeordnet, dann können diese Bänder und somit auch die mehreren Ausrichtnocken unabhängig voneinander bewegt werden. Hierdurch wird die Möglichkeit geschaffen, dass in der Ausrichtstation auch Faltschachtelzuschnitte ausgerichtet werden können, die keine gerade hintere Kante besitzen, sondern deren hintere Kante schrägt verläuft oder mit Ausnehmungen beziehungsweise Ausschnitten versehen ist.If several endless belts are arranged next to one another, then these belts and thus also the several alignment cams can be moved independently of one another. As a result, the possibility is created that also folding carton blanks can be aligned in the alignment station, which have no straight rear edge, but whose rear edge is inclined or provided with recesses or cutouts.

Ein weiterer Vorteil besteht darin, dass mehrere Ausrichtnocken am Endlosband vorgesehen sind. Dadurch kann eine sehr hohe Transportgeschwindigkeit und sehr hohe Transportdichte erzielt werden, und es können Faltschachtelzuschnitte unterschiedlichster Größe transportiert werden. Bevorzugt sind die Ausrichtnocken frei d.h. gemäß Kundenwunsch oder gemäß den Anforderungen an die Größe des Faltschachtelzuschnitts am Endlosband platzierbar.Another advantage is that a plurality of alignment cams are provided on the endless belt. This allows a very high transport speed and very high transport density can be achieved, and it can carton blanks of different sizes are transported. Preferably, the alignment cams are free, i. placeable on the endless belt according to the customer's request or according to the requirements of the size of the folding carton blank.

Bei einer Weiterbildung ist vorgesehen, dass das Endlosband parallel zur hinteren Kante des Faltschachtelzuschnitts, d.h. orthogonal zur Transportrichtung verstellbar ist. Auf diese Weise kann das Endlosband so positioniert werden, dass der Ausrichtnocken exakt an einer gewünschten Stelle des Faltschachtelzuschnitts anliegt. Bei mehreren Endlosbändern können diese auf unterschiedlich breite Faltschachtelzuschnitte eingestellt werden. In der Regel reichen zwei Endlosbänder aus, die nebeneinander angeordnet sind.In a further development, it is provided that the endless belt is parallel to the rear edge of the folding box blank, i. orthogonal to the transport direction is adjustable. In this way, the endless belt can be positioned so that the alignment cam abuts exactly at a desired location of the folding box blank. With several endless belts, these can be adjusted to different widths of folding carton blanks. As a rule, two endless belts are sufficient, which are arranged side by side.

Um die Endlosbänder mit dem gewünschten Geschwindigkeitsprofil verfahren zu können, ist der Antrieb des Endlosbandes ein Servomotor. Die Steuerung dieses Servomotors erhält die die Position der hinteren Kante des Mittelstücks definierenden Daten von einem Positionssensor, aufgrund welcher das Endlosband so angesteuert wird, dass der Anschlagnocken die Seitenklappen verschiebt, im Übrigen den Faltschachtelzuschnitt aber nicht verformt.In order to be able to move the endless belts with the desired speed profile, the drive of the endless belt is a servomotor. The control of this servomotor receives the position of the rear edge of the Center piece defining data from a position sensor, due to which the endless belt is driven so that the stop cam shifts the side flaps, but otherwise does not deform the Faltschachtelzuschnitt.

Bei einer anderen Ausführungsform ist vorgesehen, dass das Vakuumtransportband im Bereich der Ausrichtstation eine verminderte Haltekraft für den Faltschachtelzuschnitt aufweist. Aufgrund der verminderten Haltekraft besteht die Möglichkeit, dass über den oder die Ausrichtnocken nicht nur die Position der Seitenklappen korrigiert, sondern auch die Lage des gefalteten Faltschachtelzuschnitts innerhalb der Ausrichtstation und somit auf den Vakuumtransportbändern korrigiert wird. Dabei kann die Verminderung der Haltekraft lediglich über einen Teil der Wegstrecke durch die Ausrichtstation erfolgen, z.B. bei der Anlage des Ausrichtnockens am Mittelstück, d.h. nach der Korrektur des Seitenklappen.In another embodiment, it is provided that the vacuum conveyor belt in the region of the alignment station has a reduced holding force for the folding box blank. Due to the reduced holding force there is the possibility that not only corrects the position of the side flaps over the or the alignment cams, but also the position of the folded carton blank within the alignment and thus on the vacuum conveyor belts is corrected. In this case, the reduction of the holding force can take place only over part of the path through the alignment station, e.g. in the alignment of the alignment cam at the center, i. after the correction of the side flaps.

Bei einem Ausführungsbeispiel sind die Ansaugöffnungen des Vakuumtransportbandes zum Beispiel mittels einer Blende teilweise verschlossen. Durch die Verringerung des Ansaugquerschnittes wird die Haltekraft verringert, so dass der Faltschachtelzuschnitt auf dem Transportband neu positioniert werden kann.In one embodiment, the suction openings of the vacuum conveyor belt are partially closed, for example by means of a diaphragm. By reducing the Ansaugquerschnittes the holding force is reduced, so that the carton blank can be repositioned on the conveyor belt.

Dabei kann die Blende ein im Wesentlichen parallel zur Transportrichtung verlaufender, insbesondere verlagerbar angeordneter, Blechstreifen sein. Durch die Länge des Blechstreifens wird die Größe des Bereichs mit verminderter Haltekraft definiert und durch den Überdeckungsgrad der Ansaugöffnungen wird die Größe der Haltekraft bestimmt. Durch Verlagerung des Blechstreifens kann der Bereich und kann die Größe der Haltekraft eingestellt werden.In this case, the diaphragm may be a sheet metal strip running essentially parallel to the transport direction, in particular displaceably arranged. The length of the sheet metal strip defines the size of the region with reduced holding force and the degree of coverage of the suction openings determines the size of the holding force. By shifting the metal strip, the range and the size of the holding force can be adjusted.

Eine andere Ausführungsform sieht vor, dass den Ansaugöffnungen des Vakuumtransportbandes im Bereich der Ausrichtstation mehreren Unterdruckkammern zugeordnet sind und die Unterdruckkammern unterschiedliche Unterdrücke aufweisen. Durch die Einstellung des Unterdrucks in den Unterdruckkammern wird die Größe der Haltekraft gesteuert.Another embodiment provides that the suction openings of the vacuum conveyor belt in the region of the alignment are assigned to a plurality of vacuum chambers and the vacuum chambers have different negative pressures. By adjusting the negative pressure in the vacuum chambers, the size of the holding force is controlled.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen sowie der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung ein besonders bevorzugtes Ausführungsbeispiel im Einzelnen beschrieben ist. Dabei können die in der Zeichnung dargestellten sowie in der Beschreibung und den Ansprüchen erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein.Further advantages, features and details of the invention will become apparent from the subclaims and the following description in which, with reference to the drawing, a particularly preferred embodiment is described in detail. The features shown in the drawing and mentioned in the description and the claims may each be essential to the invention individually or in any combination.

In der Zeichnung zeigen:

Figur 1
ein Ablaufschema durch eine Ausrichtstation;
Figur 2
eine Draufsicht auf einen gefalteten Faltschachtelzuschnitt in der Ausrichtstation; und
Figur 3
eine vergrößerte Wiedergabe des Ausschnitts III gemäß Figur 2.
In the drawing show:
FIG. 1
a flow chart through an alignment station;
FIG. 2
a plan view of a folded carton blank in the alignment station; and
FIG. 3
an enlarged view of the section III of Figure 2.

Die Figur 1 zeigt ein Ablaufschema beim Durchlauf eines gefalteten Faltschachtelzuschnitts 10 durch eine insgesamt mit 12 bezeichnete Ausrichtstation nach einer Vorrichtung 18, in welcher die Faltschachtelzuschnitte 10 gefaltet wurden. Mit einem Pfeil 16 ist die Durchlaufrichtung oder Transportrichtung der Faltschachtelzuschnitte 10 angedeutet. In Transportrichtung 16 gesehen befindet sich vor der Ausrichtstation 12 die andeutungsweise dargestellte Faltstation 18 und hinter der Ausrichtstation 12 eine Zwischenstation 20, mit welcher zum Beispiel die Transportgeschwindigkeit der Faltschachtelzuschnitte 10 verändert werden kann. Hinter der Zwischenstation 20 befindet sich eine ebenfalls nur andeutungsweise dargestellte Abstapelstation 22 oder Packstation.FIG. 1 shows a flow chart during the passage of a folded folding box blank 10 through an alignment station designated as a whole by 12 after a device 18 in which the folding box blanks 10 have been folded. With an arrow 16, the passage direction or transport direction of the folding box blanks 10 is indicated. As seen in the transport direction 16 is located in front of the alignment station 12, the suggestively shown folding station 18 and behind the alignment station 12 an intermediate station 20, with which, for example, the transport speed of the folding box blanks 10 can be changed. Behind the intermediate station 20 is a likewise only hintedly illustrated stacking station 22 or packing station.

Wie aus Figur 1a ersichtlich, wird die Vorderkante eines Faltschachtelzuschnitts 10 von einem Vakuumtransportband 24 ergriffen und der Zuschnitt 10 in Richtung des Pfeils 16 unter ein unteres Trum 26 eines Endlosbandes 28 geführt. Am Endlosband 28 befindet sich ein abragender Ausrichtnocken 30, der beschleunigt an die hintere Kante 32 eines Mittelstücks 34 (siehe Figur 3) des Faltschachtelzuschnitts 10 herangeführt wird. Unmittelbar bevor der Ausrichtnocken 30 an der hinteren Kante 32 des Mittelstücks 34 anliegt, wird die Transportgeschwindigkeit des Endlosbandes 28 so weit reduziert, dass der Ausrichtnocken 30 nur noch geringfügig schneller ist, wie die Transportgeschwindigkeit 16 des Faltschachtelzuschnitts 10. Dies ist in Figur 1c dargestellt.As can be seen from FIG. 1 a, the front edge of a folding carton blank 10 is gripped by a vacuum conveyor belt 24 and the blank 10 is guided in the direction of the arrow 16 under a lower strand 26 of an endless belt 28. On the endless belt 28 there is a projecting alignment cam 30, which is accelerated to the rear edge 32 of a middle piece 34 (see FIG. 3) of the folding box blank 10. Immediately before the alignment cam 30 abuts the rear edge 32 of the center piece 34, the transport speed of the endless belt 28 is reduced so that the alignment cam 30 is only slightly faster than the transport speed 16 of the folding box blank 10. This is shown in Figure 1c.

Sobald der Ausrichtnocken 30 die hintere Kante 32 des Mittelstücks 34 berührt, besitzt er die gleiche Geschwindigkeit wie das Mittelstück 34. Die Position des Mittelstücks 34, insbesondere der hinteren Kante 32 des Mittelstücks 34, wird zuvor von einem Sensor 36 erfasst, der sich zum Beispiel in der Faltstation 18 befindet.Once the alignment cam 30 contacts the trailing edge 32 of the center piece 34, it has the same speed as the center piece 34. The position of the center piece 34, in particular the trailing edge 32 of the center piece 34, is previously detected by a sensor 36, for example is located in the folding station 18.

Der Ausrichtnocken 30 wird, wie aus den Figuren 1d und 1e ersichtlich, so lange an der hinteren Kante 32 des Mittelstücks 34 mitgeführt, bis der Faltschachtelzuschnitt 10 von der Zwischenstation 20, zum Beispiel von einem umlaufenden Halteband 38 gegriffen worden ist und in die Zwischenstation 20 zumindest teilweise eingezogen wird. Das Endlosband 28 wird dann geringfügig abgebremst, so dass ein Abstand zwischen dem Ausrichtnocken 30 und der hinteren Kante 32 des Mittelstücks 34 beziehungsweise des Faltschachtelzuschnitts 10 geschaffen wird.As can be seen in FIGS. 1d and 1e, the alignment cam 30 is carried along at the trailing edge 32 of the middle piece 34 until the folding box blank 10 has been moved away from the intermediate station 20, for example, by a stopper circulating tether 38 has been gripped and is at least partially retracted into the intermediate station 20. The endless belt 28 is then braked slightly, so that a distance between the alignment cam 30 and the rear edge 32 of the middle piece 34 and the folding box blank 10 is created.

Der Ausrichtnocken 30 kann nun aus der Ebene des Faltschachtelzuschnitts 10 abgehoben werden, ohne dass die Position des Faltschachtelzuschnitts 10 vom Ausrichtnocken 30 nachteilig beeinflusst wird. Eine weitere Möglichkeit zur Beabstandung von hinterer Kante 32 und Ausrichtnocken 30 besteht darin, dass der Faltschachtelzuschnitt 10 in der Zwischenstation 20 beschleunigt eingezogen wird.The alignment cam 30 can now be lifted off the plane of the folding box blank 10 without the position of the folding box blank 10 being adversely affected by the alignment cam 30. Another possibility for spacing the rear edge 32 and alignment cams 30 is that the folding box blank 10 is retracted accelerated in the intermediate station 20.

Das Endlosband 28 wird nunmehr, wie aus Figur 1g ersichtlich, so angesteuert, dass der im Bereich der hinteren Kante 32 des nachfolgenden Faltschachtelzuschnitts 10 sich befindende Ausrichtnocken 30 wieder beschleunigt an diese hintere Kante 32 herangeführt wird.As can be seen from FIG. 1g, the endless belt 28 is now activated in such a way that the alignment cam 30 located in the region of the rear edge 32 of the following folding carton blank 10 is accelerated again to this rear edge 32.

Die Figur 2 zeigt eine Draufsicht auf die beiden Vakuumtransportbänder 24, die mit Ansaugöffnungen 40 versehen sind, über welche der Faltschachtelzuschnitt 10 im Bereich der Längsseiten des Mittelstücks 34 am Vakuumtransportband 24 festgehalten wird, so dass er ohne Relativbewegung zum Vakuumtransportband 24 in Richtung des Pfeils 16 transportiert wird. Außerdem ist erkennbar, dass der Faltschachtelzuschnitt 10 gefaltet ist, da auf das Mittelstück 34 zwei Seitenklappen 42 und 44 aufgeklappt sind, die sich an ihren einander zugewandten Seitenkanten geringfügig überlappen.2 shows a plan view of the two vacuum conveyor belts 24, which are provided with suction openings 40, via which the folding box blank 10 is held in the region of the longitudinal sides of the center piece 34 on the vacuum conveyor belt 24, so that he without Relative movement is transported to the vacuum conveyor belt 24 in the direction of arrow 16. In addition, it can be seen that the folding box blank 10 is folded, since two side flaps 42 and 44 are opened on the middle piece 34, which overlap slightly at their side edges facing each other.

Dies ist deutlich in Figur 3 dargestellt. In diesem Überlappungsbereich 46 werden die beiden Seitenklappen 42 und 44 miteinander verklebt. Die beiden Ausrichtnocken 30 werden an die hintere Kante 32 des Mittelstücks 34 herangeführt und nehmen dabei die beiden Seitenklappen 42 und 44, deren hintere Kanten 48 und 50 geringfügig über die hintere Kante 32 des Mittelstücks 34 vorstehen, so lange mit, bis die hinteren Kanten 32, 48 und 50 miteinander fluchten. Die Seitenklappen 42 und 44 sind dann bezüglich des Mittelteils 34 ausgerichtet. Diese Position der Seitenklappen 42 und 44 wird von den Ausrichtnocken 30 so lange gehalten, bis der Faltschachtelzuschnitt von der Zwischenstation 20, wie in den Figuren 1e und 1f gezeigt, durch Klemmung sicher gehalten wird.This is clearly shown in FIG. In this overlap region 46, the two side flaps 42 and 44 are glued together. The two Ausrichtnocken 30 are brought to the rear edge 32 of the central piece 34 and thereby take the two side flaps 42 and 44, the rear edges 48 and 50 protrude slightly beyond the rear edge 32 of the center piece 34, so long until the rear edges 32nd , 48 and 50 are aligned. The side flaps 42 and 44 are then aligned with respect to the central portion 34. This position of the side flaps 42 and 44 is held by the alignment cams 30 until the folding box blank is securely held by the intermediate station 20, as shown in Figures 1e and 1f, by clamping.

Aus Figur 3 ist außerdem erkennbar, dass die Ansaugöffnungen 40 der Vakuumtransportbänder 24 teilweise von einer Blende 52, nämlich einem Blechstreifen 54, überdeckt sind. Dadurch wird der Ansaugquerschnitt verringert, wodurch auch die Haltekraft, mit welcher das Mittelstück 34 am Vakuumtransportband 24 gehalten wird, beeinflusst, d.h. verringert. Durch Verschiebung der Blende 52 in einer Richtung des Doppelpfeils 56, kann die Ansaugkraft auf einen gewünschten Wert eingestellt werden.It can also be seen from FIG. 3 that the suction openings 40 of the vacuum conveyor belts 24 are partially covered by a panel 52, namely a metal strip 54. This will cause the intake cross section reduces, which also affects the holding force with which the center piece 34 is held on the vacuum conveyor belt 24, ie reduced. By shifting the shutter 52 in a direction of the double arrow 56, the suction force can be adjusted to a desired value.

Durch Verminderung der Ansaugkraft besteht die Möglichkeit, dass mit den Ausrichtnocken 30 nicht nur die Seitenklappen 42 und 44 bezüglich des Mittelteils 34 ausgerichtet werden, sondern dass auch die Position des Faltschachtelzuschnitts auf dem Vakuumtransportband 24 korrigiert wird.By reducing the suction force, there is a possibility that not only the side flaps 42 and 44 are aligned with the alignment cams 30 with respect to the middle part 34, but also that the position of the folding box blank on the vacuum conveyor belt 24 is corrected.

Mit den Pfeilen 58 ist in Figur 3 angedeutet, dass die Ausrichtnocken 30 parallel zur hinteren Kante 32 derart positioniert werden können, dass sie optimal an den hinteren Kanten 48 und 50 der Seitenklappen 42 und 44, das heißt im Bereich der einander zugewandten freien Kanten, angreifen. Auf diese Weise werden die Positionen der Seitenklappen 42 und 44 ohne Verformung der hinteren Kante 48 und 50 korrigiert.The arrows 58 indicate in FIG. 3 that the alignment cams 30 can be positioned parallel to the rear edge 32 in such a way that they are optimally positioned on the rear edges 48 and 50 of the side flaps 42 and 44, that is to say in the region of the mutually facing free edges. attack. In this way, the positions of the side flaps 42 and 44 are corrected without deformation of the rear edge 48 and 50.

Mit der erfindungsgemäßen Vorrichtung können auch Faltschachtelzuschnitte 10 bearbeitet, insbesondere die Positionen der Seitenklappen 42 und 44 korrigiert werden, die eine Überlänge aufweisen, das heißt deren Länge größer ist, als der Abstand zweier Ausrichtnocken 30 auf dem Endlosband 28. Dabei wird der Ausrichtnocken 30 nach der Lagekorrektur der beiden Seitenklappen 42 und 44 früher als in Figur 1f dargestellt, abgebremst und gegebenenfalls entgegen der Transportrichtung 16 verfahren, indem die Umlaufrichtung des Endlosbandes 28 umgekehrt wird. Sobald das hintere Ende 32 aus dem Transportweg des Ausrichtnockens 30 herausgefahren worden ist, wird das Endlosband 28 in eine Position gebracht, in der der nachfolgende Faltschachtelzuschnitt 10 sowohl unter dem vorderen Ausrichtnocken 30 als auch unter dem hinteren Ausrichtnocken 30 hindurchfahren kann. Die beiden Ausrichtnocken 30 stehen in waagerechter Richtung vom Endlosband 28 ab. Sobald das hintere Ende 32 des nachfolgenden Faltschachtelzuschnitts 10 das hintere Ende des Endlosbandes 28 unterfahren hat, wird der hintere Ausrichtnocken 30 an das hintere Ende 32 dieses Faltschachtelzuschnitts 10, wie oben beschrieben, herangeführt.Faltschachtelzuschnitte 10 can be processed with the device according to the invention, in particular the positions of the side flaps 42 and 44 are corrected, which have an excess length, that is whose length is greater than the distance between two alignment cams 30 on the Endlosband 28. Here, the Ausrichtnocken 30 after the position correction of the two side flaps 42 and 44 earlier than shown in Figure 1f, braked and optionally counter to the transport direction 16 by the direction of rotation of the endless belt 28 is reversed. Once the rear end 32 has been moved out of the path of the Ausrichtnockens 30, the endless belt 28 is brought into a position in which the subsequent Faltschachtelzuschnitt 10 can pass under both the front Ausrichtnocken 30 and under the rear Ausrichtnocken 30. The two Ausrichtnocken 30 are in the horizontal direction from the endless belt 28. As soon as the rear end 32 of the subsequent folding carton blank 10 has traversed the rear end of the endless belt 28, the rear alignment cam 30 is brought to the rear end 32 of this folding carton blank 10, as described above.

Mit der erfindungsgemäßen Vorrichtung werden die Seitenklappen 42 und 44 eines Faltschachtelzuschnitts 10 optimal ausgerichtet, so dass beim Aufrichten der Faltschachtel diese die gewünschte Form einnehmen kann.With the device according to the invention, the side flaps 42 and 44 of a folding box blank 10 are optimally aligned, so that when erecting the folding box this can take the desired shape.

Claims (14)

Vorrichtung zum Falten von Faltschachtelzuschnitten (10) zu einem Faltschachtelschlauch in einer Faltstation (18), welcher sich eine in Transportrichtung (16) stromabwärts liegende Abstapelstation (22) anschließt, dadurch gekennzeichnet, dass zwischen der Faltstation (18) und der Abstapelstation (22) eine Ausrichtstation (12) für auf ein Mittelstück (34) des Faltschachtelzuschnitts (10) aufgefaltete Seitenklappen (42, 44) vorgesehen ist.Device for folding folding box blanks (10) into a folding carton tube in a folding station (18) which adjoins a stacking station (22) located downstream in the transport direction (16), characterized in that between the folding station (18) and the stacking station (22) an alignment station (12) for on a center piece (34) of the folding box blank (10) unfolded side flaps (42, 44) is provided. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass in der Ausrichtstation (12) wenigstens ein, insbesondere zwei, Vakuumtransportbänder (24) zum Transport des gefalteten Faltschachtelzuschnitts (10) durch die Ausrichtstation (12) vorgesehen sind.Apparatus according to claim 1, characterized in that in the alignment station (12) at least one, in particular two, vacuum conveyor belts (24) for transporting the folded folding box blank (10) through the alignment station (12) are provided. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Sensor (36) zur Positionsbestimmung der in Transportrichtung (16) hinteren und/oder vorderen Kante (32) des Mittelstücks (34) vorgesehen ist.Device according to one of the preceding claims, characterized in that a sensor (36) for determining the position in the transport direction (16) rear and / or front edge (32) of the central piece (34) is provided. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Sensor (36) in der Faltstation (18) angeordnet ist.Apparatus according to claim 3, characterized in that the sensor (36) in the folding station (18) is arranged. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in der Ausrichtstation (12) wenigstens ein, insbesondere zwei, Ausrichtnocken (30) vorgesehen sind, die unabhängig voneinander und/oder von der Transportgeschwindigkeit eines den Faltschachtelzuschnitt (10) transportierenden Transportsystems an die in Transportrichtung (16) hintere Kante (32) des Mittelstücks (34) heranführbar sind.Device according to one of the preceding claims, characterized in that in the alignment station (12) at least one, in particular two, alignment cams (30) are provided, which independently of each other and / or by the transport speed of the folding carton blank (10) transporting transport system to the in Transport direction (16) the rear edge (32) of the central piece (34) are approachable. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Ausrichtnocken (30) an einem Endlosband (28) befestigt ist und das Endlosband (28) mit einem Trum (26) parallel zur Transportrichtung (16) des gefalteten Faltschachtelzuschnitts (10) ausgerichtet ist.Apparatus according to claim 5, characterized in that the alignment cam (30) is attached to an endless belt (28) and the endless belt (28) is aligned with a run (26) parallel to the transport direction (16) of the folded carton blank (10). Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass mehrere Ausrichtnocken (30) am Endlosband (28) vorgesehen sind.Apparatus according to claim 6, characterized in that a plurality of alignment cams (30) on the endless belt (28) are provided. Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass das Endlosband (28) parallel zur hinteren Kante (32) verstellbar ist.Apparatus according to claim 6 or 7, characterized in that the endless belt (28) parallel to the rear edge (32) is adjustable. Vorrichtung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass wenigstens zwei Endlosbänder (28) nebeneinander angeordnet sind.Device according to one of claims 6 to 8, characterized in that at least two endless belts (28) are arranged side by side. Vorrichtung nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass der Antrieb des Endlosbandes (28) ein Servomotor ist.Device according to one of claims 6 to 9, characterized in that the drive of the endless belt (28) is a servo motor. Vorrichtung nach Anspruch 2 und einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Vakuumtransportband (24) im Bereich der Ausrichtstation (12) eine verminderte Haltekraft für den Faltschachtelzuschnitt (10) aufweist.Apparatus according to claim 2 and one of the preceding claims, characterized in that the vacuum conveyor belt (24) in the region of the alignment station (12) has a reduced holding force for the folding box blank (10). Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass die Ansaugöffnungen (40) des Vakuumtransportbandes (24) im Bereich der Ausrichtstation (12) mittels einer Blende (52) teilweise verschlossen sind.Apparatus according to claim 11, characterized in that the suction openings (40) of the vacuum conveyor belt (24) in the region of the alignment station (12) by means of a diaphragm (52) are partially closed. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Blende (52) ein im Wesentlichen parallel zur Transportrichtung (16) verlaufender, insbesondere verlagerbar, angeordneter Blechstreifen (54) ist.Apparatus according to claim 12, characterized in that the diaphragm (52) is a substantially parallel to the transport direction (16) extending, in particular displaceable, arranged sheet metal strip (54). Vorrichtung nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass die Ansaugöffnungen (40) des Vakuumtransportbandes (24) im Bereich der Ausrichtstation (12) mehreren Unterdruckkammern zugeordnet sind und die Unterdruckkammern unterschiedliche Unterdrücke aufweisen.Device according to one of claims 11 to 13, characterized in that the suction openings (40) of the vacuum conveyor belt (24) in the region of the alignment station (12) are associated with a plurality of negative pressure chambers and the negative pressure chambers have different negative pressures.
EP06400028A 2005-10-14 2006-08-04 Device for folding folding carton blanks Active EP1775114B1 (en)

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US3391616A (en) 1966-06-03 1968-07-09 Universal Corrugated Box Mach Control circuit for squaring equipment
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EP1775114B1 (en) 2010-01-27
DE102005050032A1 (en) 2007-04-26
ATE456448T1 (en) 2010-02-15

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