EP3020665A1 - Device for separating stacked printed products - Google Patents

Device for separating stacked printed products Download PDF

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Publication number
EP3020665A1
EP3020665A1 EP15002773.8A EP15002773A EP3020665A1 EP 3020665 A1 EP3020665 A1 EP 3020665A1 EP 15002773 A EP15002773 A EP 15002773A EP 3020665 A1 EP3020665 A1 EP 3020665A1
Authority
EP
European Patent Office
Prior art keywords
stack
transport
retaining
separated
belt
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
EP15002773.8A
Other languages
German (de)
French (fr)
Other versions
EP3020665B1 (en
Inventor
Christian Wollmann
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.)
Kolbus GmbH and Co KG
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Kolbus GmbH and Co KG
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Publication date
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Publication of EP3020665A1 publication Critical patent/EP3020665A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/34—Article-retaining devices controlling the release of the articles to the separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/04—Endless-belt separators
    • B65H3/042—Endless-belt separators separating from the bottom of the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/56—Elements, e.g. scrapers, fingers, needles, brushes, acting on separated article or on edge of the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/66—Article guides or smoothers, e.g. movable in operation
    • 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
    • B65H2404/267—Arrangement of belt(s) in edge contact with handled material
    • 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
    • B65H2404/269—Particular arrangement of belt, or belts other arrangements
    • B65H2404/2691—Arrangement of successive belts forming a transport path
    • 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
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/62—Transversely-extending bars or tubes
    • B65H2404/623—Transversely-extending bars or tubes gate arrangement
    • 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
    • B65H2404/70—Other elements in edge contact with handled material, e.g. registering, orientating, guiding devices
    • B65H2404/72—Stops, gauge pins, e.g. stationary
    • B65H2404/722—Stops, gauge pins, e.g. stationary movable in operation
    • 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
    • B65H2404/70—Other elements in edge contact with handled material, e.g. registering, orientating, guiding devices
    • B65H2404/74—Guiding means
    • B65H2404/741—Guiding means movable in operation
    • 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
    • B65H2404/70—Other elements in edge contact with handled material, e.g. registering, orientating, guiding devices
    • B65H2404/74—Guiding means
    • B65H2404/742—Guiding means for guiding transversely
    • 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
    • B65H2701/19—Specific article or web
    • B65H2701/1932—Signatures, folded printed matter, newspapers or parts thereof and books

Definitions

  • the present invention relates to a device for separating printed products such as books, brochures or book blocks from a stack according to the preamble of claim 1.
  • Destacking devices are used to separate stacked products such as books, brochures or book blocks and feed them to a processing machine.
  • the inlet of the singling belt is a support plate for supporting the trailing edge of the second bottom book block relative to the singling belt when pulling away the bottom book block.
  • the said retaining element can be positioned for this purpose according to the format length of the book block to the separating belt.
  • the singling belt is assigned a cyclically driven feed belt for tracking a following stack into the singling position of the singling belt up to the retaining element.
  • the present invention has for its object to form a device for separating printed products such as books, brochures or book block from a stack according to the preamble of claim 1, which is freed from the disadvantages mentioned in a simple construction.
  • the device comprises a first transport device, which effectively detects the printed product to be separated from the stack, and a retaining device, which is arranged at a distance from the first transport device such that an opening for the product to be separated is formed between the first transport device and the retaining device ,
  • the retaining device is arranged to be height adjustable relative to the first transport device, such that the passage can be adapted to the thickness of the printed products to be separated.
  • the retaining device comprises a movable element which comes into contact with the stack in such a way that it exerts a force on the first transporting device which is essentially perpendicular to the transporting direction and thus supports the tracking of the remainder of the stack onto the first transporting device. It is essential that the next to be singulated printed product along the retaining device is tracked, so that the force applied by the Kantaktelement force flow can pass through the entire stack, but at least on this next to be separated printed product acts. In this way, the next to be singled print product is securely tracked in the separation plane of the first transport device, while its bins safely prevented. In addition, so can be dispensed with a tilting of the retainer in the transport direction, which can simplify both the structure and the handling during operation, since, for example, the adjustment of the skew to the product thickness omitted.
  • the retainer is mounted so that it can be positioned substantially parallel to the plane defined by the first conveyor.
  • the retainer can each be positioned centrally of the center of gravity of the stack, so that rotation of the stack is avoided around the retainer, even if the width of the stack significantly exceeds that of the retainer. This is also a very slim design of the retaining device and thus a very good accessibility of the separation area possible.
  • the contact surface of the stack nach cuisinesde force applying contact element is substantially flat, so that shifts within the rest of the stack as well as damage to the product edges are avoided.
  • the contact element transmitting the tracking force is drive-connected to a controllable drive, so that the movement of the contact element can be easily adapted to the desired separation performance and product parameters. In this way it is also possible to selectively interrupt the movement, for example in clock gaps, for product-friendly processing.
  • the retaining device comprises an endlessly circulating belt whose stack facing and at least partially in contact with this strand is driven along the stack height to the first transport device tapering.
  • the belt satisfies both the restraining function in the direction of the first transport device and the tracking of the rest of the stack to the first transport device, which allows a simple and compact construction of the retainer.
  • the deflecting region of the belt facing the first transport device defines the passage for the singulation, so that the tracking is ensured until directly at this passage, which further increases the functional reliability of the device.
  • the tracking contact element is designed as a vibratory conveyor, which allows a very robust and low-maintenance construction.
  • the drive and the bearing of the tracking surface acting on the stack contact surface are designed such that it is excited to an oscillation substantially in a plane which is spanned by the feed direction of the first transport means and the normal to the transport plane formed by the first transport means , wherein the orientation of the vibration is inclined relative to the tracking direction of the rest of the stack.
  • the arrangement of the contact surface of the vibratory conveyor acting on the stack corresponds to that of the previously described belt.
  • Both embodiments preferably comprise an adjustable separating element, which is mounted between the tracking contact element and the stack such that it shields a variable region of the contact element with respect to the stack and thus a simple adaptation of the extent of the contact region to the printed products and the separation performance regardless of set passage allows.
  • a third preferred embodiment provides, as a tracking contact element, a pressing element which is arranged above the first transport device and which rests on the stack and tracks it as a whole.
  • a particularly simple and reliable construction of the separating device is possible.
  • a pneumatic cylinder is provided as a drive, so that the tracking force can be kept constant and thus in particular independent of the height of the rest of the stack.
  • both transport devices are designed as conveyor belts.
  • FIG. 1 shows an overview of a device according to the invention for separating stacked printed products with a separating belt 3, driven by a controllable drive 4 communicating with a controller C of the device and a feed belt 5, driven by another controllable drive 6 communicating with the control C of the device, and a Both conveyor belts 3 and 5 are substantially horizontal and aligned with each other, in particular arranged without height offset and have the same transport direction v on.
  • the device comprises light barriers 7, 8, which detect product stacks at different positions on the conveyor belts 3 and 5 and also connected to the controller C serve to control the tape feeds.
  • the passage 24 for the product to be separated in each case results from the distance of the retaining device 9 arranged above the separating belt 3 to the separating belt 3 and is adjustable by a height adjustment 18 connecting the retaining device 9 to the frame 23.
  • the height adjustment 18 comprises a spindle 19, whereby a very precise adjustment, in particular on thin printed products is possible.
  • the position of the retaining device 9 is continuously adjustable by means of a plane parallel to the separating belt 3 and mutually perpendicularly arranged linear guides 20 and 22 in a plane formed by the conveyor belts 3 and 5 and can be fixed by clamping means 21.
  • the retainer 9 can be positioned centrally of the stack, so that a rotation of the stack about the vertical axis is avoided.
  • the adjustment parallel to the transport direction v allows adaptation to the stack extension in this direction.
  • the height adjustment 18 here is a simple displacement by hand sufficiently accurate.
  • FIG. 2 shows the retainer 9, wherein portions of the supporting frame are shown in section to illustrate the structure.
  • an endlessly circulating belt 10 is arranged in the frame. This is driven by a belt pulley 11 from a motor 15 communicating with the control C of the device and wraps around a deflection pulley 25 and a tension pulley 12.
  • the pulley facing the stack moves perpendicularly to the singling belt 3 in the tracking direction d and is guided by a strip 13 guided and supported against the stack.
  • a metal sheet is provided as a shield 16 of the belt 10 relative to the stack, which is displaceable in elongated holes in the tracking direction d and fixed by clamping means 17.
  • the belt 10 acts only on a determinable number of lowermost printed products of the stack, while the products located in the shield 16 of the rest of the stack are not detected. For a product gentle operation even with continuously driven belt 10 and thus easier control of the drive 15 is possible.

Abstract

Die Erfindung betrifft eine Vorrichtung zum Entstapeln von Druckerzeugnissen wie Büchern, Broschuren oder Buchblocks für eine weitere Verarbeitung mit einem das jeweils zu vereinzelnde Produkt erfassenden Vereinzelungsband (3), einer Rückhalteeinrichtung (9), um den Reststapel am Weitertransport zu hindern, und einem dem Vereinzelungsband vorgelagerten Zuführband (5), welches weitere Stapel dem Vereinzelungsbereich zuführt, wobei die Rückhalteeinrichtung ein bewegliches mit dem Stapel in Kontakt stehendes Element umfasst, das den Reststapel mit einer diesen auf das Vereinzelungsband nachführenden Kraft beaufschlagt.The invention relates to a device for unstacking printed products such as books, brochures or book blocks for further processing with a separating strip (3) which detects the product to be separated, a retaining device (9) to prevent the remaining stack from being transported further, and a separating belt upstream supply belt (5), which feeds additional stacks the separating region, wherein the retaining means comprises a movable standing in contact with the stack element, which acts on the remainder of the stack with this on the singling belt tracking force.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Vereinzeln von Druckerzeugnissen wie beispielsweise Büchern, Broschuren oder Buchblocks aus einem Stapel gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a device for separating printed products such as books, brochures or book blocks from a stack according to the preamble of claim 1.

Entstapelungseinrichtungen kommen zum Einsatz, um gestapelte Produkte wie beispielsweise Bücher, Broschuren oder Buchblocks zu vereinzeln und einer Verarbeitungsmaschine zuzuführen.Destacking devices are used to separate stacked products such as books, brochures or book blocks and feed them to a processing machine.

Aus der DE 198 11 635 A1 ist eine gattungsgemäße Entstapelungsvorrichtung bekannt, welche bezüglich der Einfuhr und Ausfuhr höhenkonstant ist, mit einem endlosen von einem frequenzgeregelten Antrieb angetriebenen Vereinzelungsband mit einer griffigen Oberfläche, dem die Buchblockstapel nacheinander zugeführt werden, mit Seitenbegrenzungen für die Buchblockstapel und mit einem höhenverstellbaren, einen Durchlass für den jeweils zu vereinzelnden Buchblock bildenden Rückhalteelement. Das Rückhalteelement kann in Förderrichtung schräg gestellt werden, was gemäß genannter Druckschrift einer Entlastung des zu vereinzelnden Buchblocks und somit der Funktionssicherheit beim Vereinzeln zweckdienlich sei.From the DE 198 11 635 A1 a generic Entstapelungsvorrichtung is known, which is constant in height with respect to the import and export, with an endless driven by a frequency-controlled drive separation belt with a grippy surface to which the book block stacks are fed sequentially, with side boundaries for the book block stack and with a height adjustable, a passage for the each to be separated book block forming retaining element. The retaining element can be tilted in the conveying direction, which is expedient according to said document a discharge of the book block to be separated and thus the reliability in singling.

Im Einlauf des Vereinzelungsbands befindet sich ein Auflageblech zum Abstützen der Hinterkante des zweituntersten Buchblocks gegenüber dem Vereinzelungsband beim Wegziehen des untersten Buchblocks. Das genannte Rückhalteelement ist hierfür entsprechend der Formatlänge der Buchblocks zum Vereinzelungsband positionierbar. Dem Vereinzelungsband ist ein taktweise angetriebenes Zuführband zum Nachführen eines Folgestapels in die Vereinzelungsposition des Vereinzelungsbands bis zu dem Rückhalteelement zugeordnet.In the inlet of the singling belt is a support plate for supporting the trailing edge of the second bottom book block relative to the singling belt when pulling away the bottom book block. The said retaining element can be positioned for this purpose according to the format length of the book block to the separating belt. The singling belt is assigned a cyclically driven feed belt for tracking a following stack into the singling position of the singling belt up to the retaining element.

Mit der aus DE 198 11 635 A1 bekannten Entstapelungseinrichtung lassen sich Buchblockstapel schnell und einfach entstapeln. Bei dicken, kleinformatigen Buchblocks besteht jedoch die Gefahr, dass beim Wegziehen des untersten Buchblocks aus einem hohen Stapel der darüber liegende Reststapel nach hinten umfällt.With the out DE 198 11 635 A1 known Entstapelungseinrichtung book stack can be unstacked quickly and easily. In the case of thick, small-format book blocks, however, there is a risk that, when the lowermost book block is pulled out of a high stack, the overlying residual stack falls over backwards.

Eine von diesem Nachteil befreite Weiterentwicklung ist aus DE 10 2005 062 198 A1 bekannt, wobei in einem definierten Abstand hinter dem Stapel ein Abstützelement vorgesehen ist, welches zum Zuführen des Folgestapels wegbewegbar ist.A development freed from this disadvantage is out DE 10 2005 062 198 A1 known, wherein at a defined distance behind the stack, a support element is provided, which is wegbewegbar for feeding the subsequent stack.

Beiden Vorrichtungen ist gemein, dass als Folge jedes Vereinzelungsvorganges der Reststapel jeweils bis zum Erreichen der Transportebene an dem Rückhalteelement entlang gleitet. Beim Vereinzeln von ungebundenen, hilfsverklebten oder fadengehefteten Blöcken kommt es dadurch häufig zum Auffächern der Druckerzeugnisse und in dessen Folge zu fehlerhafter Vereinzelung. Insbesondere werden Seiten beschädigt oder gehen verloren. Besonders ausgeprägt ist dieser Effekt bei einer Ausrichtung der Druckerzeugnisse, in welcher jeweils eine ungebundene Fläche wie beispielsweise der Frontschnitt in Transportrichtung weist.Both devices have in common that, as a result of each separation process, the remaining stack slides along the retention element until it reaches the transport plane. When separating unbonded, Hilfsverklebten or thread-stitched blocks, this often leads to the fanning of the printed products and as a result to erroneous separation. In particular, pages are damaged or lost. This effect is particularly pronounced in an orientation of the printed products, in which in each case has an unbound area such as the front section in the transport direction.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Vereinzeln von Druckerzeugnissen wie beispielsweise Büchern, Broschuren oder Buchblocks aus einem Stapel gemäß dem Oberbegriff des Anspruchs 1 auszubilden, welche bei einfacher Konstruktion von den genannten Nachteilen befreit ist.The present invention has for its object to form a device for separating printed products such as books, brochures or book block from a stack according to the preamble of claim 1, which is freed from the disadvantages mentioned in a simple construction.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst. Dazu umfasst die Vorrichtung eine erste Transporteinrichtung, welche das aus dem Stapel zu vereinzelnde Druckerzeugnis förderwirksam erfasst, und eine Rückhalteeinrichtung, die derart zu der ersten Transporteinrichtung beabstandet angeordnet ist, dass zwischen der ersten Transporteinrichtung und der Rückhalteeinrichtung ein Durchlass für das jeweils zu vereinzelnde Produkt entsteht. Die Rückhalteeinrichtung ist zu der ersten Transporteinrichtung höheneinstellbar angeordnet, derart dass der Durchlass an die Dicke der zu vereinzelnden Druckerzeugnisse angepasst werden kann. So wird das jeweils zu vereinzelnde Druckerzeugnis von der ersten Transporteinrichtung erfasst und unter dem Reststapel herausgefördert, während der Reststapel durch die Rückhalteeinrichtung am Transport gehindert wird.This object is achieved by the features of the characterizing part of claim 1. For this purpose, the device comprises a first transport device, which effectively detects the printed product to be separated from the stack, and a retaining device, which is arranged at a distance from the first transport device such that an opening for the product to be separated is formed between the first transport device and the retaining device , The retaining device is arranged to be height adjustable relative to the first transport device, such that the passage can be adapted to the thickness of the printed products to be separated. Thus, the printed product to be separated in each case is detected by the first transport device and conveyed out below the remaining stack, while the remaining stack is prevented from being transported by the retaining device.

Erfindungsgemäß umfasst die Rückhalteeinrichtung ein bewegliches Element, welches mit dem Stapel derart in Kontakt tritt, dass es auf diesen eine auf die erste Transporteinrichtung weisende, zu der Transportrichtung im wesentlichen senkrechte Kraft ausübt und damit das Nachführen des Reststapels auf die erste Transporteinrichtung zu unterstützt. Wesentlich ist, dass das als nächstes zu vereinzelnde Druckerzeugnis entlang der Rückhalteeinrichtung nachgeführt wird, so dass der durch das Kantaktelement aufgebrachte Kraftfluss den gesamten Stapel durchlaufen kann, zumindest aber auf dieses als nächstes zu vereinzelnde Druckerzeugnis wirkt. Auf diese Weise wird das als nächstes zu vereinzelnde Druckerzeugnis sicher in die Vereinzelungsebene der ersten Transporteinrichtung nachgeführt und dabei dessen Auffächern sicher verhindert. Darüber hinaus kann so auf ein Schrägstellen der Rückhalteeinrichtung in Transportrichtung verzichtet werden, wodurch sich sowohl der Aufbau als auch die Handhabung im Betrieb vereinfachen lassen, da beispielsweise das Anpassen der Schrägstellung an die Produktdicke entfällt.According to the invention, the retaining device comprises a movable element which comes into contact with the stack in such a way that it exerts a force on the first transporting device which is essentially perpendicular to the transporting direction and thus supports the tracking of the remainder of the stack onto the first transporting device. It is essential that the next to be singulated printed product along the retaining device is tracked, so that the force applied by the Kantaktelement force flow can pass through the entire stack, but at least on this next to be separated printed product acts. In this way, the next to be singled print product is securely tracked in the separation plane of the first transport device, while its bins safely prevented. In addition, so can be dispensed with a tilting of the retainer in the transport direction, which can simplify both the structure and the handling during operation, since, for example, the adjustment of the skew to the product thickness omitted.

Vorzugsweise ist die Rückhalteeinrichtung derart angebracht, dass sie im wesentlichen parallel zu der durch die erste Transporteinrichtung bestimmte Ebene positioniert werden kann. Somit kann die Rückhalteeinrichtung jeweils mittig zu dem Schwerpunkt des Stapels positioniert werden, so dass ein Drehen des Stapels um die Rückhalteeinrichtung vermieden wird, auch wenn die Breite des Stapels die der Rückhalteeinrichtung deutlich übersteigt. Damit ist auch ein sehr schlanker Aufbau der Rückhalteeinrichtung und damit eine sehr gute Zugänglichkeit des Vereinzelungsbereiches möglich.Preferably, the retainer is mounted so that it can be positioned substantially parallel to the plane defined by the first conveyor. Thus, the retainer can each be positioned centrally of the center of gravity of the stack, so that rotation of the stack is avoided around the retainer, even if the width of the stack significantly exceeds that of the retainer. This is also a very slim design of the retaining device and thus a very good accessibility of the separation area possible.

Vorzugsweise ist die Kontaktfläche des die den Stapel nachführende Kraft aufbringenden Kontaktelementes im wesentlichen eben, so dass Verschiebungen innerhalb des Reststapels ebenso wie Beschädigungen der Produktkanten vermieden werden.Preferably, the contact surface of the stack nachführführende force applying contact element is substantially flat, so that shifts within the rest of the stack as well as damage to the product edges are avoided.

In bevorzugter Ausgestaltung ist das die nachführende Kraft übertragende Kontaktelement mit einem steuerbaren Antrieb antriebsverbunden, so dass die Bewegung des Kontaktelementes auf einfache Weise der gewünschten Vereinzelungsleistung und Produktparametern angepasst werden kann. Auf diese Weise ist es auch möglich, für eine Produkt schonende Verarbeitung die Bewegung beispielsweise in Taktlücken gezielt zu unterbrechen.In a preferred embodiment, the contact element transmitting the tracking force is drive-connected to a controllable drive, so that the movement of the contact element can be easily adapted to the desired separation performance and product parameters. In this way it is also possible to selectively interrupt the movement, for example in clock gaps, for product-friendly processing.

In einer ersten vorzugsweisen Ausgestaltung umfasst die Rückhalteeinrichtung einen endlos umlaufenden Riemen, dessen dem Stapel zugewandter und wenigstens bereichsweise mit diesem in Kontakt stehender Trum entlang der Stapelhöhe auf die erste Transporteinrichtung zulaufend angetrieben ist. Auf diese Weise erfüllt der Riemen sowohl die Rückhaltefunktion in Richtung der ersten Transporteinrichtung als auch die Nachführung des Reststapels auf die erste Transporteinrichtung zu, was einen einfachen und kompakten Aufbau der Rückhalteeinrichtung ermöglicht. Dabei legt der der ersten Transporteinrichtung zugewandte Umlenkbereich des Riemens den Durchlass für die Vereinzelung fest, so dass die Nachführung bis unmittelbar an diesen Durchlass sichergestellt ist, wodurch sich die Funktionssicherheit der Vorrichtung weiter erhöht.In a first preferred embodiment, the retaining device comprises an endlessly circulating belt whose stack facing and at least partially in contact with this strand is driven along the stack height to the first transport device tapering. In this way, the belt satisfies both the restraining function in the direction of the first transport device and the tracking of the rest of the stack to the first transport device, which allows a simple and compact construction of the retainer. In this case, the deflecting region of the belt facing the first transport device defines the passage for the singulation, so that the tracking is ensured until directly at this passage, which further increases the functional reliability of the device.

In einer zweiten vorzugsweisen Ausgestaltung ist das nachführend wirkende Kontaktelement als Schwingförderer ausgebildet, was eine sehr robuste und wartungsarme Konstruktion ermöglicht. Dabei sind der Antrieb und die Lagerung der auf den Stapel nachführend wirkenden Kontaktfläche derart gestaltet, dass diese zu einer Oszillation im wesentlichen in einer Ebene angeregt wird, welche von der Vorschubrichtung der ersten Transporteinrichtung und der Normalen zu der von der ersten Transporteinrichtung gebildeten Transportebene aufgespannt wird, wobei die Orientierung der Schwingung gegenüber der Nachführrichtung des Reststapels geneigt ist. Die Anordnung der auf den Stapel wirkenden Kontaktfläche des Schwingförderers entspricht der des vorgängig beschriebenen Riemens.In a second preferred embodiment, the tracking contact element is designed as a vibratory conveyor, which allows a very robust and low-maintenance construction. In this case, the drive and the bearing of the tracking surface acting on the stack contact surface are designed such that it is excited to an oscillation substantially in a plane which is spanned by the feed direction of the first transport means and the normal to the transport plane formed by the first transport means , wherein the orientation of the vibration is inclined relative to the tracking direction of the rest of the stack. The arrangement of the contact surface of the vibratory conveyor acting on the stack corresponds to that of the previously described belt.

Beide Ausgestaltungen umfassen vorzugsweise ein verstellbares Trennelement, welches derart zwischen dem nachführend wirkenden Kontaktelement und dem Stapel angebracht ist, dass es einen veränderbaren Bereich des Kontaktelementes gegenüber dem Stapel abschirmt und so eine einfache Anpassung der Ausdehnung des Kontaktbereiches an die Druckerzeugnisse und die Vereinzelungsleistung unabhängig von dem eingestellten Durchlass ermöglicht.Both embodiments preferably comprise an adjustable separating element, which is mounted between the tracking contact element and the stack such that it shields a variable region of the contact element with respect to the stack and thus a simple adaptation of the extent of the contact region to the printed products and the separation performance regardless of set passage allows.

Eine dritte vorzugsweise Ausgestaltung sieht als nachführendes Kontaktelement ein oberhalb der ersten Transporteinrichtung angeordnetes Presselement vor, welches auf den Stapel aufsetzt und als Gesamtheit nachführt. Auf diese Weise ist eine besonders einfache und funktionssichere Konstruktion der Vereinzelungsvorrichtung möglich. In einfacher Weise ist als Antrieb ein Pneumatikzylinder vorgesehen, so dass die nachführende Kraft konstant und damit insbesondere von der Höhe des Reststapels unabhängig gehalten werden kann.A third preferred embodiment provides, as a tracking contact element, a pressing element which is arranged above the first transport device and which rests on the stack and tracks it as a whole. In this way, a particularly simple and reliable construction of the separating device is possible. In a simple way, a pneumatic cylinder is provided as a drive, so that the tracking force can be kept constant and thus in particular independent of the height of the rest of the stack.

Für das Zuführen nachfolgender Stapel in die erste Transporteinrichtung ist eine zweite Transporteinrichtung vorgesehen. In besonders einfacher und kostengünstiger Weise sind beide Transporteinrichtungen als Transportbänder gestaltet.For feeding subsequent stacks into the first transport device, a second transport device is provided. In a particularly simple and cost-effective manner, both transport devices are designed as conveyor belts.

Eine beispielhafte Ausführungsform der erfindungsgemäßen Vorrichtung wird anhand der Figuren detailliert beschrieben. Es zeigen:

Fig. 1
eine vereinfachte perspektivische Darstellung einer Vorrichtung zum Vereinzeln gestapelter Druckerzeugnisse;
Fig. 2
eine vereinfachte perspektivische, teilweise geschnittene Darstellung einer Rückhalteeinrichtung.
An exemplary embodiment of the device according to the invention will be described in detail with reference to FIGS. Show it:
Fig. 1
a simplified perspective view of an apparatus for separating stacked printed products;
Fig. 2
a simplified perspective, partially sectioned view of a retainer.

Figur 1 zeigt einen Überblick einer erfindungsgemäßen Vorrichtung zum Vereinzeln gestapelter Druckerzeugnisse mit einem Vereinzelungsband 3, angetrieben von einem mit einer Steuerung C der Vorrichtung kommunizierenden steuerbaren Antrieb 4 und einem Zuführband 5, angetrieben von einem weiteren mit der Steuerung C der Vorrichtung kommunizierenden steuerbaren Antrieb 6, und einem die Rückhalteeinrichtung 9 aufnehmendem Gestell 23. Beide Transportbänder 3 und 5 sind im wesentlichen horizontal und zueinander fluchtend, insbesondere ohne Höhenversatz angeordnet und weisen dieselbe Transportrichtung v auf. Die Vorrichtung umfasst Lichtschranken 7, 8, welche Produktstapel an verschiedenen Positionen auf den Transportbändern 3 und 5 erfassen und ebenfalls mit der Steuerung C verbunden der Steuerung der Bandvorschübe dienen. FIG. 1 shows an overview of a device according to the invention for separating stacked printed products with a separating belt 3, driven by a controllable drive 4 communicating with a controller C of the device and a feed belt 5, driven by another controllable drive 6 communicating with the control C of the device, and a Both conveyor belts 3 and 5 are substantially horizontal and aligned with each other, in particular arranged without height offset and have the same transport direction v on. The device comprises light barriers 7, 8, which detect product stacks at different positions on the conveyor belts 3 and 5 and also connected to the controller C serve to control the tape feeds.

Der Durchlass 24 für das jeweils zu vereinzelnde Produkt ergibt sich aus dem Abstand der oberhalb des Vereinzelungsbandes 3 angeordneten Rückhalteeinrichtung 9 zu dem Vereinzelungsband 3 und ist durch eine die Rückhalteeinrichtung 9 mit dem Gestell 23 verbindende Höhenverstellung 18 einstellbar. Für eine stufenlose und präzise Anpassung des Durchlasses 24 umfasst die Höhenverstellung 18 eine Spindel 19, wodurch eine sehr präzise Einstellung insbesondere auf dünne Druckerzeugnisse möglich wird.The passage 24 for the product to be separated in each case results from the distance of the retaining device 9 arranged above the separating belt 3 to the separating belt 3 and is adjustable by a height adjustment 18 connecting the retaining device 9 to the frame 23. For a stepless and precise adjustment of the passage 24, the height adjustment 18 comprises a spindle 19, whereby a very precise adjustment, in particular on thin printed products is possible.

Die Position der Rückhalteeinrichtung 9 ist durch in einer zu dem Vereinzelungsband 3 parallelen Ebene und zueinander senkrecht angeordnete Linearführungen 20 und 22 stufenlos in einer zu den Transportbändern 3 und 5 gebildeten Ebene verstellbar und durch Klemmungen 21 festsetzbar. Damit kann Die Rückhalteeinrichtung 9 mittig zu dem Stapel positioniert werden, so dass ein Verdrehen des Stapels um die Hochachse vermieden wird. Die Verstellung parallel zur Transportrichtung v erlaubt eine Anpassung an die Stapelausdehnung in dieser Richtung. Im Gegensatz zur Höheneinstellung 18 ist hier ein einfaches Verschieben mit der Hand ausreichend genau.The position of the retaining device 9 is continuously adjustable by means of a plane parallel to the separating belt 3 and mutually perpendicularly arranged linear guides 20 and 22 in a plane formed by the conveyor belts 3 and 5 and can be fixed by clamping means 21. Thus, the retainer 9 can be positioned centrally of the stack, so that a rotation of the stack about the vertical axis is avoided. The adjustment parallel to the transport direction v allows adaptation to the stack extension in this direction. In contrast to the height adjustment 18 here is a simple displacement by hand sufficiently accurate.

Figur 2 zeigt die Rückhalteeinrichtung 9, wobei Bereiche deren tragenden Rahmens geschnitten dargestellt sind, um den Aufbau zu verdeutlichen. In dem Rahmen ist ein endlos umlaufender Riemen 10 angeordnet. Dieser wird durch eine Riemenscheibe 11 von einem mit der Steuerung C der Vorrichtung kommunizierenden Motor 15 angetrieben und umschlingt eine Umlenkrolle 25 sowie eine Spannrolle 12. Der dem Stapel zugewandte Trum bewegt sich in Nachführrichtung d senkrecht auf das Vereinzelungsband 3 zu und wird durch eine Leiste 13 geführt und gegenüber dem Stapel gestützt. FIG. 2 shows the retainer 9, wherein portions of the supporting frame are shown in section to illustrate the structure. In the frame, an endlessly circulating belt 10 is arranged. This is driven by a belt pulley 11 from a motor 15 communicating with the control C of the device and wraps around a deflection pulley 25 and a tension pulley 12. The pulley facing the stack moves perpendicularly to the singling belt 3 in the tracking direction d and is guided by a strip 13 guided and supported against the stack.

Im Bereich der dichtesten Annäherung des Riemens 10 an das Vereinzelungsband 3 und damit im Durchlass 24 läuft der Riemen 10 um eine Kante 14 der Leiste 13. Die so erreichte scharfe Umlenkung des Riemens 10 erlaubt ein sicheres Vereinzeln von Druckerzeugnisse mit einer Dicke deutlich kleiner als dem Radius einer Umlenkrolle.In the region of the closest approach of the belt 10 to the separating belt 3 and thus in the passage 24 of the belt 10 passes around an edge 14 of the bar 13. The thus achieved sharp deflection of the belt 10 allows a secure separation of printed products with a thickness significantly smaller than that Radius of a pulley.

Um den wirksamen Bereich des Riemens 10 an die Dicke der zu vereinzelnden Druckerzeugnisse anpassen zu können, ist ein Blech als Abschirmung 16 des Riemens 10 gegenüber dem Stapel vorgesehen, welches in Langlöchern in Nachführrichtung d verschiebbar und durch Klemmmittel 17 festsetzbar ist. Damit wirkt der Riemen 10 lediglich auf eine bestimmbare Anzahl unterster Druckerzeugnisse des Stapels, während die im Bereich der Abschirmung 16 befindlichen Produkte des Reststapels nicht erfasst werden. Damit ist ein Produkt schonender Betrieb auch mit kontinuierlich angetriebenem Riemen 10 und damit einfacher Ansteuerung des Antriebs 15 möglich.In order to be able to adapt the effective region of the belt 10 to the thickness of the printed products to be separated, a metal sheet is provided as a shield 16 of the belt 10 relative to the stack, which is displaceable in elongated holes in the tracking direction d and fixed by clamping means 17. Thus, the belt 10 acts only on a determinable number of lowermost printed products of the stack, while the products located in the shield 16 of the rest of the stack are not detected. For a product gentle operation even with continuously driven belt 10 and thus easier control of the drive 15 is possible.

Claims (9)

Vorrichtung zum Vereinzeln gestapelter Druckerzeugnisse wie beispielsweise Bücher, Broschuren oder Buchblocks, wenigstens umfassend • eine erste, auf das jeweils zu vereinzelnde Druckerzeugnis des Stapels wirkende Transporteinrichtung (3) mit einer ersten Vorschubrichtung (v) im wesentlichen senkrecht zur Stapelhöhe, • eine dieser ersten Transporteinrichtung (3) vorgelagerte und dieser Stapel zuführende zweite Transporteinrichtung (5) und • eine höheneinstellbare, mit der ersten Transporteinrichtung (3) einen Durchlass (24) für das jeweils zu vereinzelnde Druckerzeugnis bildende Rückhalteeinrichtung (9), gekennzeichnet durch,
wenigstens ein bewegliches Kontaktelement der Rückhalteeinrichtung (9), welches zumindest einen Bereich des Stapels mit einer Kraft beaufschlagt, welche in einer im wesentlichen der ersten Transportvorrichtung (3) zugewandten und zu der ersten Vorschubrichtung (v) senkrechten Richtung (d) wirkt.Device for separating stacked printed products such as books, brochures or book blocks, at least comprising A first transport device (3) acting on the printed product of the stack to be separated in each case with a first feed direction (v) substantially perpendicular to the stack height, • one of these first transport means (3) upstream and this stack supplying second transport means (5) and A height-adjustable retaining device (9) forming with the first transport device (3) a passage (24) for the respective printed product to be singulated, marked by,
at least one movable contact element of the retaining device (9), which acts on at least one portion of the stack with a force which in a substantially the first transport device (3) facing and to the first feed direction (v) vertical direction (d) acts. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rückhalteeinrichtung (9) im wesentlichen parallel zu der durch die erste Transporteinrichtung (3) bestimmten Ebene relativ zu der ersten Transporteinrichtung (3) positionierbar ist.Device according to Claim 1, characterized in that the retaining device (9) can be positioned substantially parallel to the plane determined by the first transport device (3) relative to the first transport device (3). Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das wenigstens eine Kontaktelement der Rückhalteeinrichtung (9) eine im wesentlichen ebene auf den Stapel wirkende Kontaktfläche umfasst.Apparatus according to claim 1 or 2, characterized in that the at least one contact element of the retaining means (9) comprises a substantially planar contact surface acting on the stack. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das wenigstens eine Kontaktelement der Rückhalteeinrichtung (9) mit einem steuerbaren Antrieb (15) antriebsverbunden ist.Device according to one of claims 1 to 3, characterized in that the at least one contact element of the retaining device (9) with a controllable drive (15) is drive-connected. Vorrichtung nach einem der vorangehenden Ansprüche, gekennzeichnet durch einen endlos umlaufenden Riemen (10) als das wenigstens eine Kontaktelement der Rückhalteeinrichtung (9), welcher in Vorschubrichtung (v) der ersten Transporteinrichtung (3) hinter dem zu vereinzelnden Stapel angeordnet ist und wenigstens einen Bereich der vorlaufenden Fläche des zu vereinzelnden Stapels erfasst.Device according to one of the preceding claims, characterized by an endlessly circulating belt (10) as the at least one contact element of the retaining device (9) which is arranged in the feed direction (v) of the first transport device (3) behind the stack to be separated and at least one area the leading surface of the stack to be separated detected. Vorrichtung nach einem der Ansprüche 1 bis 4, gekennzeichnet durch einen Schwingförderer als das wenigstens eine Kontaktelement der Rückhalteeinrichtung (9), welcher in Vorschubrichtung (v) der ersten Transporteinrichtung (3) hinter dem zu vereinzelnden Stapel angeordnet ist und wenigstens einen Bereich der vorlaufenden Fläche des zu vereinzelnden Stapels erfasst.Device according to one of claims 1 to 4, characterized by a vibrating conveyor as the at least one contact element of the retaining device (9) which is arranged in the feed direction (v) of the first transport means (3) behind the stack to be separated and at least a portion of the leading surface of the stack to be separated. Vorrichtung nach einem der vorangehenden Ansprüche, gekennzeichnet durch ein zwischen dem Transportelement der Rückhalteeinrichtung (9) und dem zu vereinzelnden Stapel Druckerzeugnisse angeordnetes, im Abstand zum Durchlass (24) zwischen Rückhalteeinrichtung (9) und erster Transporteinrichtung (3) verstellbares Trennelement (16).Device according to one of the preceding claims, characterized by a separating element (16) arranged between the transport element of the retaining device (9) and the stack of printed products to be separated, spaced from the passage (24) between the retaining device (9) and the first transport device (3). Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die wenigstens eine Kontaktfläche von einem oberhalb der ersten Transporteinrichtung (3) angeordneten Presselement gebildet wird.Device according to one of claims 1 to 4, characterized in that the at least one contact surface of a above the first transport means (3) arranged pressing element is formed. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die erste Transporteinrichtung (3) und die zweite Transporteinrichtung (5) jeweils wenigstens ein Transportband umfassen.Device according to one of the preceding claims, characterized in that the first transport device (3) and the second transport device (5) each comprise at least one conveyor belt.
EP15002773.8A 2014-11-12 2015-09-25 Device for separating stacked printed products Not-in-force EP3020665B1 (en)

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