EP1309504B1 - Method and arrangement for the production of crossed stacks - Google Patents

Method and arrangement for the production of crossed stacks Download PDF

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Publication number
EP1309504B1
EP1309504B1 EP01957673A EP01957673A EP1309504B1 EP 1309504 B1 EP1309504 B1 EP 1309504B1 EP 01957673 A EP01957673 A EP 01957673A EP 01957673 A EP01957673 A EP 01957673A EP 1309504 B1 EP1309504 B1 EP 1309504B1
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EP
European Patent Office
Prior art keywords
objects
conveying
release
rotation
conveyance
Prior art date
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Expired - Lifetime
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EP01957673A
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German (de)
French (fr)
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EP1309504A1 (en
Inventor
Carl Conrad MÄDER
Erwin Müller
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Ferag AG
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Ferag AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H33/00Forming counted batches in delivery pile or stream of articles
    • B65H33/12Forming counted batches in delivery pile or stream of articles by creating gaps in the stream
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/003Delivering or advancing articles from machines; Advancing articles to or into piles by grippers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00Parts for holding the handled material
    • B65H2405/50Gripping means
    • B65H2405/55Rail guided gripping means running in closed loop, e.g. without permanent interconnecting means

Definitions

  • the invention is in the field of materials handling and relates to a method and a device according to the preambles of the corresponding independent claims.
  • Method and apparatus are used for the production of cross stacks of serially conveyed, flat objects, in particular of printed products, such as newspapers or magazines.
  • the articles lie substantially parallel to each other, directly adjacent to each other and aligned (like edges of all objects parallel to each other) such that the stack has the same footprint as any single of the objects.
  • the stability and manageability of such stacks depends very much on how uniform the thickness of the objects is over their areal extent. Articles having a regular thickness are more stably stackable than articles having thicker and thinner areas.
  • Stack instabilities due to irregular article thicknesses can be avoided for certain shapes of flat objects by not aligning the articles in the stack in the strictest sense of the word, but such that edge regions of different thicknesses are positioned on top of each other, so that the resulting stack on all sides As equal as possible height receives and the objects are arranged therein as possible parallel to each other.
  • An example of flat articles that are not uniformly thick everywhere and whose stacks can be stabilized by the above method are folded printed products of rectangular or square shape.
  • Such products are usually stacked in so-called cross stacks, that is, a first group of rectified products (superimposed like edges) is a second group in which the products are again aligned with each other, positioned so that the same edges of the first and the second group each other opposite and that the thickest product corners in the first and in the second group are diagonally opposite each other.
  • the second group is stacked with a third group where the product orientation is the same as in the first group and so on.
  • the products of adjacent groups are thus rotated relative to one another by 180 ° about an axis perpendicular to the product surfaces (stacking axis).
  • a stacking printed products are, for example, in a scale formation, in the leading product edges are above, loosely conveyed on a conveyor belt against an open top stacking shaft and pushed successively over the stacking shaft opening, depending on the design of the shaft directly to a stacking table or a resulting stack be pushed or fell from the stack opening on such. It is also known to hold the printed products for the stacking individually held by grippers at the leading edges also in a kind of scale formation against the stacking shaft to pull over the shaft opening and then release from the grippers.
  • the stacking shaft or stacking table is usually rotated by 180 ° about a vertical axis of rotation (stacking axis) after the positioning of a group of products (stacking section or layer).
  • the further supplied products are usually stacked on an auxiliary table, which auxiliary table lowered after rotation and laterally is removed from the stack.
  • the supply of products must be briefly interrupted (new positioning of the auxiliary table).
  • For the rotation of the stacking shaft, for the interruption of the feed and for the positioning of the auxiliary table many moving parts are necessary, which complicates the corresponding facilities and makes maintenance cumbersome. Examples of the aforementioned stacking methods are described in publications CH-539569, DE-2752513 or EP-0586802.
  • EP-0854105 also a method is described, with which a first stream of individually held and rectified zuge felicitten printed products is converted into a second stream of individually held printed products, wherein the printed products in the second stream in groups alternately rotated by 180 ° and at are held opposite edges, such that in the second stream, a cross-stack is already preformed.
  • the power conversion is accomplished by delivering the products of every other group to grippers of an auxiliary conveyor system, by rotating the dispensed products by conveying along the twisted conveyor path of the auxiliary conveyor system, and by transferring the rotated products through the original conveyor system by placing the products on one of the originally held edge opposite edge to be taken.
  • the products of the other groups are not transferred to the auxiliary conveyor system and are therefore not rotated.
  • Cross-stacking of products delivered in such a converted product stream is obviously significantly easier than cross-stacking from a stream of rectified products.
  • the power conversion places high demands on equipment and also very high demands on the alignment and synchronization of the conveyor systems cooperating during the product transfer.
  • the invention also has as its object to provide a method and a device with which serially, individually held and rectified conveyed, flat objects, in particular printed products, can be stacked to form cross stacks.
  • the method and apparatus should be completely independent of whether the cross-stacked stacking sections or stacking layers (article groups) are large or small (optionally only one product) and also independent of whether these stacking sections are of a consistent or varying size.
  • the process should be simple and allow short cycle times.
  • the device should also be simple and get along with as few moving parts. In particular, a temporary takeover of objects by further grippers of an auxiliary conveyor system is unnecessary, so that the alignment and synchronization difficulties mentioned above can be avoided.
  • the flat articles having a shape suitable for cross-stacking (for example, folded, rectangular or square printed products) and those of the stack are individually conveyed, serially and rectilinearly conveyed alternately to a first stack before positioning on a resulting stack Step sequence or a second step sequence, wherein the two step sequences are different from each other such that a cross-stack is formed when the alternating groups are positioned in a stacking device.
  • the rectilinearly supplied articles are alternately treated in groups alternately prior to positioning in a stacking device so as to form a cross-stack in the stacking without further action, in which the alternating object groups represent the stacking sections in which the articles are in groups rotated relative to each other by 180 ° about the stacking axis (perpendicular to the object surfaces).
  • a rotational difference of 180 ° around a perpendicular to the object surfaces can be realized entirely in one of the step sequences, while not being rotated in the other sequence of steps. It can also be realized as two partial rotations that are performed in opposite directions in each of the two step sequences.
  • the rotation difference can also be carried out as combined rotations by 180 ° about two mutually perpendicular axes parallel to the object surfaces, in turn, each of the two rotations as a complete rotation in a sequence or as two partial rotations in both sequences of steps is executable.
  • the stacking device which is used in the method according to the invention is advantageously a stacking shaft to which products can optionally be supplied from two opposite sides and / or on two stacking levels lying one above the other.
  • FIG. 1 shows a first exemplary embodiment of the method according to the invention on the basis of a very schematically illustrated device.
  • This device comprises a feed system 1, a stacking device 2 and two conveying devices 10 and 10 'with conveying supports arranged between two discharge points E and E' of the feed system 1 and the stacking device 2 (device 10 with a cooperating pair of conveying supports 10.1 and 10.2, device 10 '). with only one conveyor 10'.1).
  • control means not shown
  • the group-wise dismissal of items 7 from the held promotion discharge of each second group 11 at the first discharge point E and dismissal of the other groups 11 'at the second discharge point E').
  • the delivery system 1 is, for example, a system as described in publication WO-99/33731.
  • This system has a rail track, which defines a conveying path 3, and on the rail track individually movable holding elements 4.
  • the holding elements 4 each have a along the rail track or conveyor 3 rolling or sliding rolling or sliding body 5 and a gripper 6 for holding depending on an object 7, wherein the gripper 6 by means of suitable control means (not shown) for gripping objects closed and opened to fire objects.
  • the holding elements 4 are driven along the conveying path 3 by gravity (conveying along a sloping in the conveying direction F rail track) or they are for example magnetically coupled to a parallel to the conveying path 3 conveying member (not shown).
  • groups (11 and 11 ') braking or stopping elements 8 are to be provided, in particular when operating with gravity drive, behind which are each a group of holding elements 4 and 7 of articles 7 dammed.
  • the feed system 1 can also be realized with an endlessly circulating conveyor chain with grippers 6 arranged at regular intervals thereon.
  • grippers 6 arranged at regular intervals thereon.
  • the conveying path 3 of the delivery system 1 leads in a conveying direction F past the stacking device 2 or at the stacking device 2.
  • the first discharge point E is arranged in front of the stacking device 2, the second discharge point E 'after the stacking device 2.
  • the conveying device 10 has a substantially identical, the conveying device 10 'is a substantially opposite conveying direction to the conveying direction F of the feed system 1.
  • the two cooperating conveyor supports 10.1 and 10.2 of the conveyor 10 are wound into each other.
  • the sequence of steps undergone by the groups 11 is: Discharge in E, turning step A about 90 ° counterclockwise parallel to the held edges 9, 180 ° rotating step B (conveying path twisting 31) during the lying conveyance about a parallel to the object surfaces to the held edges 9.
  • the conveying paths and conveying speeds of the groups 11 and 11 ' are adapted to one another and to the feed rate so that the groups of the stacking device 2 can be fed as continuously as possible.
  • the stacking device 2 as shown in Figure 1, two stacked, cooperating stacking units: a lower stacking unit with an advantageously lowerable stacking table 21.1 and a lower, lateral stacking opening 22.1 and an upper stacking unit with an advantageously lowerable stacking table 21.2 and an upper stack opening 22.2.
  • a cross stack 12 is formed by pushing articles of groups 11 directly onto the cross stack 12 through the lower stack opening 22.1, and by lowering objects of groups 11 'stacked on the upper stacking table 21.2 and removing the upper stacking table 21.2 between the supply of two consecutive group 11 are deposited on the resulting cross-stack 12.
  • At least two exchangeable stacking tables 21.1 and 21.2 are respectively provided for the upper and the lower stacking unit, so that during the lowering of a stacked group 11 'the stacking of a further group 11' can already begin and that during the lowering of a finished cross stack 12 and during its removal from the stacking shaft 20 can already begin the formation of another cross stack 12.
  • the device for carrying out the method according to the invention requires very few moving parts and no cast masses, such as the resulting stack, have to be accelerated and decelerated.
  • FIGS. 2 a and 2 b show a further, exemplary embodiment of the method according to the invention with reference to a device which is again shown very schematically.
  • This has essentially the same components as the device shown in Figure 1, which components are also designated by the same reference numerals.
  • the device is shown in Figure 2a as a side view, in the figure 2b as a plan view.
  • the conveying path 3 of the feeding system 1 leads before and after a conveying path loop 30 by 180 ° (rotation step B with complete rotation during the held conveyance for groups 11 ') over the stacking device 2 or past the stacking device 2, the articles 7 of every second group (Groups 11) before the loop 30 (first discharge point E) and the remaining items (groups 11 ') after the loop 30 (second discharge point E') dismissed and delivered to conveyors 10 and 10 '.
  • These conveyor devices both have two conveyor supports (10.1, 10.2 and 10'.1, 10'.2) and a bend 33 (rotary steps A and A 'with partial rotations during the overhung conveyor for groups 11 and 11') of a substantially vertical in a substantially horizontal promotion.
  • the conveying devices 10 and 10 ' are both directed substantially against the conveying direction F of the feeding system and lead from opposite sides of the stacking device. 2
  • FIGS. 3a and 3b show a further, exemplary embodiment of the method according to the invention, again with reference to a very schematically illustrated device, which is shown in FIG. 3a as a side view, in FIG. 3b from a bird's eye view.
  • the device has only one conveying device 10 'with conveying support 10'.1 for the groups 11', while the groups 11 are positioned directly from the held conveyance by the feeding system 1 in the stacking device 2.
  • the feed system 1 shown an endless circulating conveyor chain 32 (only partially shown), which defines the conveyor 3 and are mounted on the same distance from each other gripper 6.
  • the conveying path 3 leads first via the stacking device 2, where the first discharge point E is arranged, and after a conveying path loop 30 via the conveying device 10 'leading to the stacking device 2, where the second discharge point E' is provided.
  • the objects of the groups 11 are discharged and stacked without rotation and without transfer to a conveyor with conveyor support directly above the stacking shaft 20 from the held promotion.
  • the sequence of steps associated with these groups 11 thus only contains the discharge step.
  • the articles of the groups 11 ' are rotated by the conveying about the winningwegschlaufe 30 by 180 ° about an axis perpendicular to the article surfaces and stored without further rotation on the conveyor support 10'.1, by which they are positioned in the stacking device 2.
  • FIG. 4 shows a further, exemplary embodiment of the method according to the invention with reference to a further, schematically illustrated device.
  • This in turn has a feed system 1, a stacking device 2 and in this case a first and a second conveying device 10 and 10 ', each with a conveyor support 10.1 and 10'.1.
  • the feeding system 1 is advantageously in turn equipped with a rail track defining the conveying path 3 and holding elements 4 which can be moved individually along the rail track.
  • This rail track has a twisting point 31, the first discharge point E being arranged in the conveying direction F in front of the twisting point 31, the second discharge point E 'after the twisting point 31.
  • the groups 11 ' are rotated by twisting the conveying path 180 ° about a perpendicular to the object surfaces (rotation step C during the held conveyance).
  • the rotations at the discharge of the objects are the same direction for groups 11 and groups 11 'and do not contribute to the rotation difference to be created.
  • the conveyor support 10'.1 of the second conveyor device 10 ' is pivotally shown, such that it can be lowered onto the conveyor support 10.1 of the first conveyor device 10 and can be raised therefrom.
  • objects of the groups 11 ' are conveyed from the conveyor support 10'.1 to the conveyor support 10.1 and from there to the stacking.
  • the conveyor support 10.1 of the first conveyor system 10 is free for conveying a group 11 to the stacking device 2.
  • the conveyor support 10'.1 be omitted and groups 11 and 11 'can be stacked simultaneously or at least partially simultaneously.
  • FIG. 5 shows a further, exemplary embodiment of the method according to the invention with reference to a further, schematically illustrated device.
  • the method is in accordance with the method according to FIG 4 except for the rotation step C to a perpendicular to the object surfaces, which here by a circular movement transverse to the conveying direction F of a piece 3 'of the rail line (axis of rotation D.1, parallel to the conveying direction F) is realized , as will be clarified by the detail 40.
  • Articles 7 or holding elements 4 belonging to groups 11 are blocked on the displaceable rail piece 3 ', then the rail piece 3' is turned to the lower position and the articles are discharged (first discharge point E).
  • FIG. 6 shows a further, exemplary embodiment of the method according to the invention on the basis of a device which is again shown very schematically.
  • a movable rail piece 3 ' is used, but is rotated about a rotation axis D.2 perpendicular to the conveying direction F, whereby groups 11 are rotated about a parallel to the held edges of the objects 7 (rotation step A).
  • the groups 11 thus rotated are then released between two conveying supports 10.1 and 10.2 of a first conveying device 10 (discharge point E) and rotated again during the conveyance, which has a bend 33 as a scale flow (rotation step B with complete rotation, ie 180 °, another parallel to the object surfaces).
  • FIG. 7 shows a further, exemplary embodiment of the method according to the invention on the basis of a further, schematically illustrated device.
  • This device also has a feed system 1 (rail track with individually movable holding elements or pulling element with grippers 6 arranged thereon), a conveyor system 10 with conveyor support 10.1 and a stacking device, not shown.
  • the objects 7 of all groups 11 and 11 'at discharge points E and E' which may possibly coincide, are released from the held conveyor by being deposited on the same conveyor support 10.1.
  • the still held objects 7 are rotated by rotating the gripper 6 holding the objects relative to the conveying path 3 by substantially 90 ° (rotational steps A and A 'with partial rotations for groups 11 and 11' in the opposite direction).
  • the groups 11 are deposited in a direction opposite to the direction of deposition of the groups 11 '(rotation steps B and B' with partial rotations).
  • the groups After deposition, the groups must be aligned on the conveyor support (arrows P) to form an aligned group flow, which as such can be fed directly to a stacker (not shown).
  • Gripper 6 the parts of holding elements or on a pulling member are arranged and in the manner shown in Figure 7 controlled relative to the conveying path 3 are rotatable, control means for controlling such gripper rotations (rotation steps A and A '), means for depositing objects 7 in various direction on the conveyor support 10.1 (B and B 'rotational steps) and means for aligning deposited as a scale formation on the conveyor support 10,1 groups 11 and 11' of objects 7 are known in the art, so that this in the figure 7 only very schematically illustrated device with knowledge of the inventive teaching can realize without problems.
  • FIGS. 1 to 7 and the associated parts of the description illustrate exemplary method variants or exemplary embodiments of the device according to the invention, each of which has two associated step sequences for producing the article groups 11 and 11 'rotated relative to each other Implementation of the step sequences.
  • the steps contained in the individual steps, in particular the rotational steps A, B and / or C can also be combined differently to other sequences of steps, resulting in further embodiments of the inventive method, which also belong to the spirit of the present application as specific in the figures illustrated embodiments.
  • All embodiments of the device according to the invention can also have a plurality of stacking devices 2.
  • the conveying path 3 of the feeding system for example, successively in the range of each stacking device, are for each stacking device 2 corresponding discharge points E and E 'with control means for group release of objects 7 from the held promotion and conveyors 10 and optionally 10' for a provision for support.
  • the control means are to be controlled at discharge points such that, for example, in a first stacking device, each first (11 discharged in E) and third (11 'discharged in E'), in a second stacking device every second (11 discharged in E) and fourth ( 11 'dismissed in E') of the supplied groups.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Specific Conveyance Elements (AREA)
  • Discharge By Other Means (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Accessories And Tools For Shearing Machines (AREA)

Abstract

Flat objects (7) to be stacked in a stacking device (2) are supplied serially, individually held and aligned with one another. Cross stacks (12) are produced by subjecting alternating groups (11, 11') of the such supplied objects (7) to one of two step sequences, wherein, in both step sequences, the objects of the groups are released from held conveyance and are, in at least one of the step sequences, brought to the stacking device lying on a conveying surface (10.1, 10.1') in an imbricated formation, and wherein in the two step sequences a rotation difference of 180° around an axis perpendicular to the object surfaces is established between alternating groups (11, 11'). The objects (7) positioned in the stacking device in groups form a cross stack (12), without it being necessary, that the stacking device (2) or parts of it have to be rotated between groups of objects being positioned. This results in shorter cycle times and in a smaller number of moving parts. The stacking system is suitable in particular for producing cross stacks (12) made up of rectangular or square, folded printed products.

Description

Die Erfindung liegt auf dem Gebiete der Fördertechnik und betrifft ein Verfahren und eine Einrichtung nach den Oberbegriffen der entsprechenden, unabhängigen Patentansprüche. Verfahren und Einrichtung dienen zur Herstellung von Kreuzstapeln aus seriell zugeförderten, flachen Gegenständen, insbesondere aus Druckprodukten, wie beispielsweise Zeitungen oder Zeitschriften.The invention is in the field of materials handling and relates to a method and a device according to the preambles of the corresponding independent claims. Method and apparatus are used for the production of cross stacks of serially conveyed, flat objects, in particular of printed products, such as newspapers or magazines.

In einem Stapel von flachen Gegenständen, die alle etwa die gleiche Form haben, liegen die Gegenstände im wesentlichen parallel zueinander, direkt aneinander an und sind aufeinander ausgerichtet (gleiche Kanten aller Gegenstände parallel zueinander), derart, dass der Stapel eine gleiche Grundfläche aufweist wie jeder einzelne der Gegenstände. Die Stabilität und Handhabbarkeit derartiger Stapel ist sehr davon abhängig, wie gleichmässig die Dicke der Gegenstände über ihre flächige Ausdehnung ist. Gegenstände, die eine regelmässige Dicke aufweisen, sind stabiler stapelbar als Gegenstände, die dickere und dünnere Bereiche aufweisen. Stapelinstabilitäten bedingt durch unregelmässige Gegenstandsdicken lassen sich für bestimmte Formen von flachen Gegenständen vermeiden, indem die Gegenstände im Stapel nicht im engsten Sinne des Wortes aufeinander ausgerichtet sind, sondern derart, dass Kantenbereiche verschiedener Dicke aufeinander positioniert werden, so dass der entstehende Stapel auf allen Seiten eine möglichst gleiche Höhe erhält und die Gegenstände darin möglichst parallel zueinander angeordnet sind.In a stack of flat objects, all of approximately the same shape, the articles lie substantially parallel to each other, directly adjacent to each other and aligned (like edges of all objects parallel to each other) such that the stack has the same footprint as any single of the objects. The stability and manageability of such stacks depends very much on how uniform the thickness of the objects is over their areal extent. Articles having a regular thickness are more stably stackable than articles having thicker and thinner areas. Stack instabilities due to irregular article thicknesses can be avoided for certain shapes of flat objects by not aligning the articles in the stack in the strictest sense of the word, but such that edge regions of different thicknesses are positioned on top of each other, so that the resulting stack on all sides As equal as possible height receives and the objects are arranged therein as possible parallel to each other.

Ein Beispiel von flachen Gegenständen, die nicht überall gleich dick sind und deren Stapel durch die oben genannte Methode stabilisiert werden können, sind gefaltete Druckprodukte mit rechteckiger oder quadratischer Form. Solche Produkte werden üblicherweise in sogenannten Kreuzstapeln gestapelt, das heisst auf eine erste gestapelte Gruppe gleichgerichteter Produkte (übereinanderliegende gleiche Kanten) wird eine zweite Gruppe, in der die Produkte wiederum untereinander gleichgerichtet sind, derart positioniert, dass gleiche Kanten der ersten und der zweiten Gruppe einander gegenüberliegen und dass die jeweils dicksten Produktecken in der ersten und in der zweiten Gruppe einander diagonal gegenüberliegen. Auf die zweite Gruppe wird eine dritte Gruppe gestapelt, in der die Produkteausrichtung gleich ist wie in der ersten Gruppe und so weiter. Die Produkte von benachbarten Gruppen sind also relativ zueinander um 180° gedreht um eine Achse senkrecht zu den Produktflächen (Stapelachse).An example of flat articles that are not uniformly thick everywhere and whose stacks can be stabilized by the above method are folded printed products of rectangular or square shape. Such products are usually stacked in so-called cross stacks, that is, a first group of rectified products (superimposed like edges) is a second group in which the products are again aligned with each other, positioned so that the same edges of the first and the second group each other opposite and that the thickest product corners in the first and in the second group are diagonally opposite each other. The second group is stacked with a third group where the product orientation is the same as in the first group and so on. The products of adjacent groups are thus rotated relative to one another by 180 ° about an axis perpendicular to the product surfaces (stacking axis).

Für eine Stapelung werden Druckprodukte beispielsweise in einer Schuppenformation, in der vorlaufende Produktkanten oben liegen, lose auf einem Förderband aufliegend gegen einen oben offenen Stapelschacht gefördert und nacheinander über die Stapelschachtöffnung geschoben, wobei sie je nach Ausbildung des Schachtes direkt auf einen Stapeltisch oder einen entstehenden Stapel geschoben werden oder von der Stapelöffnung auf einen solchen fällen. Ebenfalls ist es bekannt, die Druckprodukte für die Stapelung einzeln von Greifern an den vorlaufenden Kanten gehalten ebenfalls in einer Art Schuppenformation gegen den Stapelschacht zu führen, über die Schachtöffnung zu ziehen und dann aus den Greifern zu entlassen.For a stacking printed products are, for example, in a scale formation, in the leading product edges are above, loosely conveyed on a conveyor belt against an open top stacking shaft and pushed successively over the stacking shaft opening, depending on the design of the shaft directly to a stacking table or a resulting stack be pushed or fell from the stack opening on such. It is also known to hold the printed products for the stacking individually held by grippers at the leading edges also in a kind of scale formation against the stacking shaft to pull over the shaft opening and then release from the grippers.

Zur Herstellung von Kreuzstapeln wird üblicherweise der Stapelschacht oder Stapeltisch immer nach der Positionierung einer Gruppe von Produkten (Stapelsektion oder Lage) um 180° um eine senkrechte Drehachse (Stapelachse) gedreht. Während der Drehung des Stapelschachtes werden die weiter zugeführten Produkte meist auf einem Hilfstisch gestapelt, welcher Hilfstisch nach der Drehung abgesenkt und seitlich aus dem Stapel entfernt wird. Trotzdem muss zwischen der Positionierung der einzelnen Gruppen die Zuführung von Produkten kurz unterbrochen werden (neue Positionierung des Hilfstisches). Für die Drehung des Stapelschachtes, für die Unterbrechung der Zuführung und für die Positionierung des Hilfstisches sind viele bewegliche Teile notwendig, was die entsprechenden Einrichtungen kompliziert und bezüglich Unterhalt aufwändig macht. Beispiele der genannten Stapelungsmethoden sind beschrieben in den Publikationen CH-539569, DE-2752513 oder EP-0586802 .For the production of cross stacks, the stacking shaft or stacking table is usually rotated by 180 ° about a vertical axis of rotation (stacking axis) after the positioning of a group of products (stacking section or layer). During the rotation of the stacking shaft, the further supplied products are usually stacked on an auxiliary table, which auxiliary table lowered after rotation and laterally is removed from the stack. Nevertheless, between the positioning of the individual groups, the supply of products must be briefly interrupted (new positioning of the auxiliary table). For the rotation of the stacking shaft, for the interruption of the feed and for the positioning of the auxiliary table many moving parts are necessary, which complicates the corresponding facilities and makes maintenance cumbersome. Examples of the aforementioned stacking methods are described in publications CH-539569, DE-2752513 or EP-0586802.

In der Publikation EP-0854105 ist auch eine Methode beschrieben, mit der ein erster Strom von einzeln gehalten und gleichgerichtet zugeförderten Druckprodukten gewandelt wird in einen zweiten Strom von einzeln gehaltenen Druckprodukten, wobei die Druckprodukte im zweiten Strom in Gruppen alternierend um 180° gedreht und an gegenüberliegenden Kanten gehalten sind, derart, dass im zweiten Strom ein Kreuzstapel bereits vorgebildet ist. Die Stromwandlung wird realisiert durch Abgabe der Produkte jeder zweiten Gruppe an Greifer eines Hilfsfördersystems, durch Drehen der abgegebenen Produkte, indem sie entlang des verwundenen Förderweges des Hilfsfördersystems gefördert werden, und durch Übernahme der gedrehten Produkte durch das ursprüngliche Fördersystem, indem die Produkte an einer der ursprünglich gehaltenen Kante gegenüberliegenden Kante ergriffen werden. Die Produkte der anderen Gruppen werden nicht an das Hilfsfördersystem übergeben und werden dadurch nicht gedreht. Die Kreuzstapelbildung aus Produkten, die in einem derart gewandelten Produktstrom zugefördert werden, ist offensichtlich bedeutend einfacher als die Kreuzstapelbildung aus einem Strom gleichgerichteter Produkte. Die Stromwandlung stellt aber hohe apparative Anforderungen und auch sehr hohe Anforderungen an die Ausrichtung und Synchronisierung der bei der Produktübergabe kooperierenden Fördersysteme.In the publication EP-0854105 also a method is described, with which a first stream of individually held and rectified zugeförderten printed products is converted into a second stream of individually held printed products, wherein the printed products in the second stream in groups alternately rotated by 180 ° and at are held opposite edges, such that in the second stream, a cross-stack is already preformed. The power conversion is accomplished by delivering the products of every other group to grippers of an auxiliary conveyor system, by rotating the dispensed products by conveying along the twisted conveyor path of the auxiliary conveyor system, and by transferring the rotated products through the original conveyor system by placing the products on one of the originally held edge opposite edge to be taken. The products of the other groups are not transferred to the auxiliary conveyor system and are therefore not rotated. Cross-stacking of products delivered in such a converted product stream is obviously significantly easier than cross-stacking from a stream of rectified products. However, the power conversion places high demands on equipment and also very high demands on the alignment and synchronization of the conveyor systems cooperating during the product transfer.

Die Erfindung stellt sich ebenfalls die Aufgabe, ein Verfahren und eine Einrichtung zu schaffen, mit denen seriell, einzeln gehalten und gleichgerichtet zugeförderte, flache Gegenstände, insbesondere Druckprodukte, zu Kreuzstapeln gestapelt werden können. Das Verfahren und die Einrichtung sollen vollständig davon unabhängig sein, ob die kreuzgestapelten Stapelsektionen oder Stapellagen (Gegenstandsgruppen) gross oder klein (gegebenenfalls nur ein Produkt) sind, und auch unabhängig davon, ob diese Stapelsektionen eine gleichbleibende oder eine variierende Grösse haben. Das Verfahren soll einfach sein und kurze Zykluszeiten erlauben. Die Einrichtung soll ebenfalls einfach sein und mit möglichst wenig bewegten Teilen auskommen. Insbesondere soll sich eine vorübergehende Übernahme von Gegenständen durch weitere Greifer eines Hilfsfördersystems erübrigen, so dass die oben genannten Ausrichtungs- und Synchronisationsschwierigkeiten umgangen werden können.The invention also has as its object to provide a method and a device with which serially, individually held and rectified conveyed, flat objects, in particular printed products, can be stacked to form cross stacks. The method and apparatus should be completely independent of whether the cross-stacked stacking sections or stacking layers (article groups) are large or small (optionally only one product) and also independent of whether these stacking sections are of a consistent or varying size. The process should be simple and allow short cycle times. The device should also be simple and get along with as few moving parts. In particular, a temporary takeover of objects by further grippers of an auxiliary conveyor system is unnecessary, so that the alignment and synchronization difficulties mentioned above can be avoided.

Diese Aufgabe wird gelöst durch das Verfahren und die Einrichtung, wie sie in den Patentansprüchen definiert sind.This object is achieved by the method and the device as defined in the patent claims.

Nach dem erfindungsgemässen Verfahren werden die flachen Gegenstände, die eine für die Kreuzstapelung geeignete Form haben (beispielsweise gefaltete, rechteckige oder quadratische Druckprodukte) und die der Stapelung einzeln gehalten, seriell und gleichgerichtet zugefördert werden, vor der Positionierung auf einem entstehenden Stapel gruppenweise alternierend einer ersten Schrittfolge oder einer zweiten Schrittfolge unterzogen, wobei die zwei Schrittfolgen derart voneinander verschieden sind, dass ein Kreuzstapel entsteht, wenn die alternierenden Gruppen in einer Stapelvorrichtung positioniert werden. Das heisst mit anderen Worten, die gleichgerichtet zugeführten Gegenstände werden vor der Positionierung in einer Stapelvorrichtung gruppenweise alternierend derart verschieden behandelt, dass sie bei der Stapelung ohne weitere Massnahmen einen Kreuzstapel bilden, in dem die alternierenden Gegenstandsgruppen die Stapelsektionen darstellen, in denen die Gegenstände gruppenweise relativ zueinander um 180° um die Stapelachse (senkrecht zu den Gegenstandsflächen) gedreht sind.According to the method of the invention, the flat articles having a shape suitable for cross-stacking (for example, folded, rectangular or square printed products) and those of the stack are individually conveyed, serially and rectilinearly conveyed alternately to a first stack before positioning on a resulting stack Step sequence or a second step sequence, wherein the two step sequences are different from each other such that a cross-stack is formed when the alternating groups are positioned in a stacking device. That is, in other words, the rectilinearly supplied articles are alternately treated in groups alternately prior to positioning in a stacking device so as to form a cross-stack in the stacking without further action, in which the alternating object groups represent the stacking sections in which the articles are in groups rotated relative to each other by 180 ° about the stacking axis (perpendicular to the object surfaces).

Von den genannten beiden Schrittfolgen:

  • weisen beide einen Entlassungsschritt auf, in dem die Gegenstände aus der gehaltenen Förderung entlassen werden, wobei für mindestens die eine der Schrittfolgen dieser Schritt eine Übergabe der Gegenstände von der gehaltenen Förderung in eine als Schuppenformation aufliegende Förderung (das heisst im wesentlichen Förderung in Schuppenformation auf einer Förderauflage oder zwischen zwei kooperierenden Förderauflagen) ist und für die andere Schrittfolge eine direkte Positionierung der Gegenstände in einer Stapelvorrichtung sein kann;
  • weisen beide zusammen derart verschiedene Drehschritte auf, dass sich zwischen Gegenständen, die die erste Schrittfolge durchlaufen haben, und Gegenständen, die die zweite Schrittfolge durchlaufen haben, ein Drehungsunterschied von 180° um eine Senkrechte zu den Gegenstandsflächen ergibt;
From the two steps mentioned above:
  • both have a discharge step in which the articles are released from the held promotion, wherein for at least one of the step sequences of this step, a transfer of the objects from the held promotion in lying as a scale formation promotion (that is essentially promotion in scale formation on a Conveying support or between two cooperating conveying supports) and for the other sequence of steps can be a direct positioning of the objects in a stacking device;
  • Both together comprise such different turning steps that between objects which have passed through the first sequence of steps and objects which have passed through the second sequence of steps, a rotation difference of 180 ° results about a perpendicular to the object surfaces;

Die zu dem gewünschten Drehungsunterschied führenden, in den beiden Schrittfolgen entsprechend verschieden durchzuführenden Drehschritte können die folgenden sein:

  • Drehung der Gegenstände während der gehaltenen Förderung;
  • Übergabe der Gegenstände aus der gehaltenen Förderung in die aufliegende Förderung mit gleichzeitiger Drehung;
  • Drehung der Produkte während der aufliegenden Förderung.
The rotation steps leading to the desired rotation difference, which can be carried out differently according to the two steps, can be the following:
  • Rotation of the objects during the promotion held;
  • Transfer of the items from the held promotion in the resting promotion with simultaneous rotation;
  • Rotation of the products during the lying conveyor.

Ein Drehunterschied von 180° um eine Senkrechte zu den Gegenstandsflächen kann als solcher ganz in einer der Schrittfolgen realisiert werden, während in der anderen Schrittfolge nicht gedreht wird. Sie kann auch als zwei Teildrehungen, die in entgegengesetzten Richtungen in jeder der zwei Schrittfolgen durchgeführt werden, realisiert werden. Der Drehungsunterschied kann auch als kombinierte Drehungen um je 180° um zwei senkrecht aufeinander stehende Achsen parallel zu den Gegenstandsflächen durchgeführt werden, wobei wiederum jede einzelne der beiden Drehungen als ganze Drehung in einer Schrittfolge oder als zwei Teildrehungen in beiden Schrittfolgen ausführbar ist.As such, a rotational difference of 180 ° around a perpendicular to the object surfaces can be realized entirely in one of the step sequences, while not being rotated in the other sequence of steps. It can also be realized as two partial rotations that are performed in opposite directions in each of the two step sequences. The rotation difference can also be carried out as combined rotations by 180 ° about two mutually perpendicular axes parallel to the object surfaces, in turn, each of the two rotations as a complete rotation in a sequence or as two partial rotations in both sequences of steps is executable.

Die Stapelvorrichtung, die beim erfindungsgemässen Verfahren zur Anwendung kommt, ist vorteilhafterweise ein Stapelschacht, dem gegebenenfalls von zwei entgegengesetzten Seiten und/oder auf zwei übereinanderliegenden Stapelniveaus Produkte zugeführt werden können.The stacking device which is used in the method according to the invention is advantageously a stacking shaft to which products can optionally be supplied from two opposite sides and / or on two stacking levels lying one above the other.

Das erfindungsgemässe Verfahren und beispielhafte Ausführungsformen der erfindungsgemässen Einrichtung werden anhand der folgenden Figuren im Detail beschrieben:

Figur 1
eine beispielhafte Ausführungsform des erfindungsgemässen Verfahrens mit Drehungen um zwei Parallelen zu den Gegenstandsflächen (Teildrehungen bei der Entlassung der Gegenstände in beiden Schrittfolgen und ganze Drehung während der aufliegenden Förderung in einer Schrittfolge);
Figuren 2a und 2b
eine weitere, beispielhafte Ausführungsform des erfindungsgemässen Verfahrens mit Drehungen um zwei Parallelen zu den Gegenstandsflächen (ganze Drehung während der gehaltenen Förderung in einer Schrittfolge und Teildrehungen während der aufliegenden Förderung in beiden Schrittfolgen) als Seitenansicht (Fig. 2a) und als Draufsicht (Fig. 2b);
Figuren 3a und 3b
eine weitere, beispielhafte Ausführungsform des erfindungsgemässen Verfahrens mit einer Drehung um eine Senkrechte zu den Gegenstandsflächen (ganze Drehung während der gehaltenen Förderung in einer Schrittfolge durch Förderwegschlaufe) als Seitenansicht (Fig. 3a) und als Draufsicht (Fig. 3b);
Figuren 4 und 5
zwei weitere, beispielhafte Ausführungsformen des erfindungsgemässen Verfahrens mit einer Drehung um eine Senkrechte zu den Gegenstandsflächen (Figur 4: ganze Drehung während der gehaltenen Förderung durch Förderwegverwindung; Figur 5: ganze Drehung während der gehaltenen Förderung durch Drehung eines Schienenstückes);
Figur 6
eine weitere, beispielhafte Ausführungsform des erfindungsgemässen Verfahrens mit Drehungen um zwei Parallelen zu den Gegenstandsflächen (ganze Drehung während der gehaltenen Förderung in einer der Schrittfolgen und ganze Drehung während der aufliegenden Förderung in derselben Schrittfolge).
Figur 7
eine weitere, beispielhafte Ausführungsform des erfindungsgemässen Verfahrens mit Drehungen um zwei Parallelen zu den Gegenstandsflächen (Teildrehungen während der gehaltenen Förderung in beiden Schrittfolgen und Teildrehungen beim Entlassen ebenfalls in beiden Schrittfolgen);
The inventive method and exemplary embodiments of the inventive device will be described in detail with reference to the following figures:
FIG. 1
an exemplary embodiment of the inventive method with rotations about two parallels to the object surfaces (partial rotations in the discharge of the objects in both steps and complete rotation during the overlying promotion in a sequence);
FIGS. 2a and 2b
a further exemplary embodiment of the inventive method with rotations about two parallels to the object surfaces (full rotation during the held promotion in a sequence and partial rotations during the overlying promotion in both steps) as a side view (Fig. 2a) and as a plan view (Fig. 2b );
FIGS. 3a and 3b
a further exemplary embodiment of the inventive method with a rotation about a perpendicular to the article surfaces (full rotation during the held promotion in a sequence by Förderwegschlaufe) as a side view (Fig. 3a) and as a plan view (Figure 3b).
FIGS. 4 and 5
Figure 2: Whole rotation during the held conveyance by conveying path distortion Figure 5: Whole rotation during the held conveyance by rotation of a rail piece).
FIG. 6
a further exemplary embodiment of the inventive method with rotations about two parallels to the object surfaces (full rotation during the held promotion in one of the step sequences and complete rotation during the overlying promotion in the same sequence of steps).
FIG. 7
a further exemplary embodiment of the inventive method with rotations about two parallels to the object surfaces (partial rotations during the held promotion in both steps and partial rotations when firing also in both steps);

Figur 1 zeigt eine erste beispielhafte Ausführungsform des erfindungsgemässen Verfahrens anhand einer sehr schematisch dargestellten Einrichtung. Diese Einrichtung weist ein Zuführungssystem 1, eine Stapelvorrichtung 2 und zwei zwischen zwei Entlassungsstellen E und E' des Zuführungssystems 1 und der Stapelvorrichtung 2 angeordnete Fördervorrichtungen 10 und 10' mit Förderauflagen (Vorrichtung 10 mit einem kooperierenden Paar von Förderauflagen 10.1 und 10.2, Vorrichtung 10' mit nur einer Förderauflage 10'.1). An den Entlassungsstellen E und E' sind Steuermittel (nicht dargestellt) vorgesehen zur gruppenweisen Entlassung von Gegenständen 7 aus der gehaltenen Förderung (Entlassung jeder zweiten Gruppe 11 an der ersten Entlassungsstelle E und Entlassung der anderen Gruppen 11' an der zweiten Entlassungsstelle E'). FIG. 1 shows a first exemplary embodiment of the method according to the invention on the basis of a very schematically illustrated device. This device comprises a feed system 1, a stacking device 2 and two conveying devices 10 and 10 'with conveying supports arranged between two discharge points E and E' of the feed system 1 and the stacking device 2 (device 10 with a cooperating pair of conveying supports 10.1 and 10.2, device 10 '). with only one conveyor 10'.1). At the discharge points E and E 'are control means (not shown) provided for the group-wise dismissal of items 7 from the held promotion (discharge of each second group 11 at the first discharge point E and dismissal of the other groups 11 'at the second discharge point E').

Das Zuführungssystem 1 ist beispielsweise ein System, wie es in der Publikation WO-99/33731 beschrieben ist. Dieses System weist einen Schienenstrang auf, der einen Förderweg 3 definiert, und auf dem Schienenstrang individuell verfahrbare Halteelemente 4. Die Halteelemente 4 weisen je einen entlang des Schienenstangs bzw. Förderwegs 3 rollenden oder gleitenden Roll- oder Gleitkörper 5 und einen Greifer 6 zum Halten von je einem Gegenstand 7 auf, wobei die Greifer 6 mit Hilfe geeigneter Steuermittel (nicht dargestellt) zum Ergreifen von Gegenständen geschlossen und zum Entlassen von Gegenständen geöffnet werden können. Die Halteelemente 4 werden entlang des Förderweges 3 angetrieben durch die Schwerkraft (Förderung entlang eines in Förderrichtung F abfallenden Schienenstranges) oder sie werden für die Förderung beispielsweise magnetisch an einem parallel zum Förderweg 3 verlaufenden Förderorgan (nicht dargestellt) angekoppelt. Für die Bildung von Gruppen (11 und 11') sind insbesondere bei Betrieb mit Schwerkraftantrieb Brems- oder Stoppelemente 8 vorzusehen, hinter denen je eine Gruppe von Halteelementen 4 bzw. von Gegenständen 7 aufgestaut werden.The delivery system 1 is, for example, a system as described in publication WO-99/33731. This system has a rail track, which defines a conveying path 3, and on the rail track individually movable holding elements 4. The holding elements 4 each have a along the rail track or conveyor 3 rolling or sliding rolling or sliding body 5 and a gripper 6 for holding depending on an object 7, wherein the gripper 6 by means of suitable control means (not shown) for gripping objects closed and opened to fire objects. The holding elements 4 are driven along the conveying path 3 by gravity (conveying along a sloping in the conveying direction F rail track) or they are for example magnetically coupled to a parallel to the conveying path 3 conveying member (not shown). For the formation of groups (11 and 11 ') braking or stopping elements 8 are to be provided, in particular when operating with gravity drive, behind which are each a group of holding elements 4 and 7 of articles 7 dammed.

Das Zuführungssystem 1 kann aber auch mit einer endlos umlaufenden Förderkette mit daran in regelmässigen Abständen angeordneten Greifern 6 realisiert sein. Für die in der Figur 1 dargestellte Ausführungsform ist es dabei nicht notwendig, dass zwischen Gruppen 11 und 11' grössere Abstände vorliegen als zwischen den Halteelementen 4 innerhalb der Gruppen.However, the feed system 1 can also be realized with an endlessly circulating conveyor chain with grippers 6 arranged at regular intervals thereon. For the embodiment shown in FIG. 1, it is not necessary for larger distances to be present between groups 11 and 11 'than between the holding elements 4 within the groups.

Der Förderweg 3 des Zuführungssystems 1 führt in einer Förderrichtung F über die Stapelvorrichtung 2 bzw. an der Stapelvorrichtung 2 vorbei. Die erste Entlassungsstelle E ist vor der Stapelvorrichtung 2, die zweite Entlassungsstelle E' nach der Stapelvorrichtung 2 angeordnet. Die Fördervorrichtung 10 hat eine im wesentlichen gleiche, die Fördervorrichtung 10' eine im wesentlichen entgegengesetzte Förderrichtung zur Förderrichtung F des Zuführungssystems 1. Die beiden kooperierenden Förderauflagen 10.1 und 10.2 der Fördervorrichtung 10 sind ineinander verwunden.The conveying path 3 of the delivery system 1 leads in a conveying direction F past the stacking device 2 or at the stacking device 2. The first discharge point E is arranged in front of the stacking device 2, the second discharge point E 'after the stacking device 2. The conveying device 10 has a substantially identical, the conveying device 10 'is a substantially opposite conveying direction to the conveying direction F of the feed system 1. The two cooperating conveyor supports 10.1 and 10.2 of the conveyor 10 are wound into each other.

Die Schrittfolge, die die Gruppen 11 durchlaufen ist: Entlassung in E, Drehschritt A um eine Parallele zu den gehaltenen Kanten 9 um 90° im Gegenuhrzeigersinn, Drehschritt B (Förderwegverwindung 31) um 180° während der aufliegenden Förderung um eine Parallele zu den Gegenstandsflächen senkrecht zu den gehaltenen Kanten 9. Die Schrittfolge, die die Gruppen 11' durchlaufen ist: Entlassung in E' und Drehschritt A' bei der Entlassung um eine Parallele zu den gehaltenen Kanten 9 im Uhrzeigersinn.The sequence of steps undergone by the groups 11 is: Discharge in E, turning step A about 90 ° counterclockwise parallel to the held edges 9, 180 ° rotating step B (conveying path twisting 31) during the lying conveyance about a parallel to the object surfaces to the held edges 9. The sequence of steps which the groups 11 'have passed through: release in E' and rotation step A 'at release by a parallel to the held edges 9 in the clockwise direction.

Von der ersten Entlassungsstelle E an sind die Förderwege und Fördergeschwindigkeiten der Gruppen 11 und 11' derart aneinander und an die Zuförderleistung anzupassen, dass die Gruppen der Stapelvorrichtung 2 möglichst kontinuierlich zugeführt werden können.From the first discharge point E, the conveying paths and conveying speeds of the groups 11 and 11 'are adapted to one another and to the feed rate so that the groups of the stacking device 2 can be fed as continuously as possible.

Die Gegenstände der Gruppen 11 und 11' werden von den Förderauflagen 10.2 und 10'.1 von zwei einander gegenüberliegenden Seiten in den Stapelschacht 20 der Stapelvorrichtung 2 geschoben und dadurch gestapelt. Vorteilhafterweise weist die Stapelvorrichtung 2, wie in der Figur 1 dargestellt, zwei übereinanderliegende, kooperierende Stapeleinheiten auf: eine untere Stapeleinheit mit einem vorteilhafterweise absenkbaren Stapeltisch 21.1 und einer unteren, seitlichen Stapelöffnung 22.1 und eine obere Stapeleinheit mit einem vorteilhafterweise absenkbaren Stapeltisch 21.2 und einer oberen Stapelöffnung 22.2. Auf dem unteren Stapeltisch 21.1 entsteht ein Kreuastapel 12 dadurch, dass Gegenstände von Gruppen 11 durch die untere Stapelöffnung 22.1 direkt auf den Kreuzstapel 12 geschoben werden, und dadurch, dass Gegenstände von Gruppen 11', die auf dem oberen Stapeltisch 21.2 gestapelt werden, durch Absenken und Entfernen des oberen Stapeltisches 21.2 zwischen der Zuführung von zwei aufeinanderfolgenden Gruppe 11 auf den entstehenden Kreuzstapel 12 abgesetzt werden.The articles of the groups 11 and 11 'are pushed by the conveyor supports 10.2 and 10'.1 of two opposite sides in the stacking shaft 20 of the stacking device 2 and thereby stacked. Advantageously, the stacking device 2, as shown in Figure 1, two stacked, cooperating stacking units: a lower stacking unit with an advantageously lowerable stacking table 21.1 and a lower, lateral stacking opening 22.1 and an upper stacking unit with an advantageously lowerable stacking table 21.2 and an upper stack opening 22.2. On the lower stacking table 21.1, a cross stack 12 is formed by pushing articles of groups 11 directly onto the cross stack 12 through the lower stack opening 22.1, and by lowering objects of groups 11 'stacked on the upper stacking table 21.2 and removing the upper stacking table 21.2 between the supply of two consecutive group 11 are deposited on the resulting cross-stack 12.

Vorteilhafterweise sind für die obere und für die untere Stapeleinheit je mindestens zwei austauschbare Stapeltische 21.1 bzw. 21.2 vorgesehen, so dass während dem Absenken einer fertig gestapelten Gruppe 11' bereits die Stapelung einer weiteren Gruppe 11' beginnen kann und dass während dem Absenken eines fertigen Kreuzstapels 12 und während seiner Entfernung aus dem Stapelschacht 20 bereits die Bildung eines weiteren Kreuzstapels 12 beginnen kann.Advantageously, at least two exchangeable stacking tables 21.1 and 21.2 are respectively provided for the upper and the lower stacking unit, so that during the lowering of a stacked group 11 'the stacking of a further group 11' can already begin and that during the lowering of a finished cross stack 12 and during its removal from the stacking shaft 20 can already begin the formation of another cross stack 12.

Für die Bildung von Kreuzstapeln 12 aus Gruppen 11 und 11' nach dem Verfahren, wie es in der Figur 1 dargestellt ist, ist es aber auch möglich, die Gruppen auf gleichem Niveau an eine obere Öffnung des Stapelschachtes 20 zu führen und in an sich bekannter Weise die Gegenstandsgruppen 11 und 11' alternierend in den Stapelschacht 20 zu fördern.For the formation of cross stacks 12 from groups 11 and 11 'by the method as shown in Figure 1, it is also possible to guide the groups at the same level to an upper opening of the stacking shaft 20 and in per se known To promote the article groups 11 and 11 'alternately in the stacking shaft 20.

Wie aus der Figur 1 ersichtlich ist, braucht die Einrichtung zur Durchführung des erfindungsgemässen Verfahrens sehr wenig bewegliche Teile und es müssen keine gossen Massen, wie beispielsweise der entstehende Stapel, beschleunigt und abgebremst werden.As can be seen from FIG. 1, the device for carrying out the method according to the invention requires very few moving parts and no cast masses, such as the resulting stack, have to be accelerated and decelerated.

Figuren 2a und 2b zeigen eine weitere, beispielhafte Ausführungsform des erfindungsgemässen Verfahrens anhand einer wiederum sehr schematisch dargestellten Einrichtung. Diese weist im wesentlichen dieselben Bestandteile auf wie die in der Figur 1 dargestellte Einrichtung, welche Bestandteile auch mit denselben Bezugsziffern bezeichnet sind. Die Einrichtung ist in der Figur 2a als Seitenansicht, in der Figur 2b als Draufsicht dargestellt. FIGS. 2 a and 2 b show a further, exemplary embodiment of the method according to the invention with reference to a device which is again shown very schematically. This has essentially the same components as the device shown in Figure 1, which components are also designated by the same reference numerals. The device is shown in Figure 2a as a side view, in the figure 2b as a plan view.

Der Förderweg 3 des Zuführungssystems 1 führt vor und nach einer Förderwegschlaufe 30 um 180° (Drehschritt B mit ganzer Drehung während der gehaltenen Förderung für Gruppen 11') über die Stapelvorrichtung 2 bzw. an der Stapelvorrichtung 2 vorbei, wobei die Gegenstände 7 jeder zweiten Gruppe (Gruppen 11) vor der Schlaufe 30 (erste Entlassungsstelle E) und die restlichen Gegenstände (Gruppen 11') nach der Schlaufe 30 (zweite Entlassungsstelle E') entlassen und an Fördervorrichtungen 10 bzw. 10' übergeben werden. Diese Fördervorrichtungen weisen beide zwei Förderauflagen (10.1, 10.2 und 10'.1, 10'.2) auf sowie eine Biegung 33 (Drehschritte A und A' mit Teildrehungen während der aufliegenden Förderung für Gruppen 11 und 11') von einer im wesentlichen senkrechten in eine im wesentlichen waagrechte Förderung. Die Fördervorrichtungen 10 und 10' sind beide im wesentlichen gegen die Förderrichtung F des Zuführungssystems gerichtet und führen von einander entgegengesetzten Seiten an die Stapelvorrichtung 2.The conveying path 3 of the feeding system 1 leads before and after a conveying path loop 30 by 180 ° (rotation step B with complete rotation during the held conveyance for groups 11 ') over the stacking device 2 or past the stacking device 2, the articles 7 of every second group (Groups 11) before the loop 30 (first discharge point E) and the remaining items (groups 11 ') after the loop 30 (second discharge point E') dismissed and delivered to conveyors 10 and 10 '. These conveyor devices both have two conveyor supports (10.1, 10.2 and 10'.1, 10'.2) and a bend 33 (rotary steps A and A 'with partial rotations during the overhung conveyor for groups 11 and 11') of a substantially vertical in a substantially horizontal promotion. The conveying devices 10 and 10 'are both directed substantially against the conveying direction F of the feeding system and lead from opposite sides of the stacking device. 2

Figuren 3a und 3b zeigen eine weitere, beispielhafte Ausführungsform des erfindungsgemässen Verfahrens, wiederum anhand einer sehr schematisch dargestellten Einrichtung, die in der Figur 3a als Seitenansicht, in der Figur 3b aus der Vogelschau dargestellt ist. Die Einrichtung weist nur eine Fördervorrichtung 10' mit Förderauflage 10'.1 für die Gruppen 11' auf, während die Gruppen 11 direkt aus der gehaltenen Förderung durch das Zuführungssystem 1 in der Stapelvorrichtung 2 positioniert werden. Hier weist das dargestellte Zuführungssystem 1 eine endlos umlaufende Transportkette 32 (nur teilweise dargestellt) auf, die den Förderweg 3 definiert und an der mit gleichen Abständen voneinander Greifer 6 montiert sind. Mit Hilfe dieser Greifer 6 werden die Gegenstände 7 in an sich bekannter Art und Weise in einer Art Schuppenformation, an den obenliegenden und vorlaufenden Kanten 9 gehalten in der Förderrichtung F gefördert. Der Förderweg 3 führt zuerst über die Stapelvorrichtung 2, wo die erste Entlassungsstelle E angeordnet ist, und nach einer Förderwegschlaufe 30 über die gegen die Stapelvorrichtung 2 führende Fördervorrichtung 10', wo die zweite Entlassungsstelle E' vorgesehen ist. FIGS. 3a and 3b show a further, exemplary embodiment of the method according to the invention, again with reference to a very schematically illustrated device, which is shown in FIG. 3a as a side view, in FIG. 3b from a bird's eye view. The device has only one conveying device 10 'with conveying support 10'.1 for the groups 11', while the groups 11 are positioned directly from the held conveyance by the feeding system 1 in the stacking device 2. Here, the feed system 1 shown an endless circulating conveyor chain 32 (only partially shown), which defines the conveyor 3 and are mounted on the same distance from each other gripper 6. With the help of this gripper 6, the objects 7 are conveyed in a manner known per se in a kind of scale formation, held on the overhead and leading edges 9 in the conveying direction F. The conveying path 3 leads first via the stacking device 2, where the first discharge point E is arranged, and after a conveying path loop 30 via the conveying device 10 'leading to the stacking device 2, where the second discharge point E' is provided.

Die Gegenstände der Gruppen 11 werden ohne Drehung und ohne Übergabe an eine Fördervorrichtung mit Förderauflage direkt über dem Stapelschacht 20 aus der gehaltenen Förderung entlassen und gestapelt. Die diesen Gruppen 11 zugeordnete Schrittfolge beinhaltet also nur den Entlassungsschritt. Die Gegenstände der Gruppen 11' werden durch die Förderung um die Förderwegschlaufe 30 um 180° um eine Achse senkrecht zu den Gegenstandsflächen gedreht und ohne weitere Drehung auf die Förderauflage 10'.1 abgelegt, durch die sie in der Stapelvorrichtung 2 positioniert werden.The objects of the groups 11 are discharged and stacked without rotation and without transfer to a conveyor with conveyor support directly above the stacking shaft 20 from the held promotion. The sequence of steps associated with these groups 11 thus only contains the discharge step. The articles of the groups 11 'are rotated by the conveying about the Förderwegschlaufe 30 by 180 ° about an axis perpendicular to the article surfaces and stored without further rotation on the conveyor support 10'.1, by which they are positioned in the stacking device 2.

Figur 4 zeigt eine weitere, beispielhafte Ausführungsform des erfindungsgemässen Verfahrens anhand einer weiteren, schematisch dargestellten Einrichtung. Diese weist wiederum ein Zuführungssystem 1, eine Stapelvorrichtung 2 und in diesem Falle eine erste und eine zweite Fördervorrichtung 10 und 10' mit je einer Förderauflage 10.1 und 10'.1 auf. Das Zuführungssystem 1 ist vorteilhafterweise wiederum mit einem den Förderweg 3 definierenden Schienenstrang und entlang dem Schienenstrang individuell verfahrbaren Halteelementen 4 ausgerüstet. Dieser Schienenstrang weist eine Verwindungsstelle 31 auf, wobei die erste Entlassungsstelle E in Förderrichtung F vor der Verwindungsstelle 31, die zweite Entlassungsstelle E' nach der Verwindungsstelle 31 angeordnet ist. FIG. 4 shows a further, exemplary embodiment of the method according to the invention with reference to a further, schematically illustrated device. This in turn has a feed system 1, a stacking device 2 and in this case a first and a second conveying device 10 and 10 ', each with a conveyor support 10.1 and 10'.1. The feeding system 1 is advantageously in turn equipped with a rail track defining the conveying path 3 and holding elements 4 which can be moved individually along the rail track. This rail track has a twisting point 31, the first discharge point E being arranged in the conveying direction F in front of the twisting point 31, the second discharge point E 'after the twisting point 31.

Die Gruppen 11' werden durch Verwindung des Förderweges um 180° um eine Senkrechte zu den Gegenstandsflächen gedreht (Drehschritt C während der gehaltenen Förderung). Die Drehungen bei der Entlassung der Gegenstände sind für Gruppen 11 und Gruppen 11' gleich gerichtet und tragen nicht zum zu erstellenden Drehungsunterschied bei.The groups 11 'are rotated by twisting the conveying path 180 ° about a perpendicular to the object surfaces (rotation step C during the held conveyance). The rotations at the discharge of the objects are the same direction for groups 11 and groups 11 'and do not contribute to the rotation difference to be created.

Die Förderauflage 10'.1 der zweiten Fördervorrichtung 10' ist schwenkbar dargestellt, derart, dass sie auf die Förderauflage 10.1 der ersten Fördervorrichtung 10 absenkbar und von dieser abhebbar ist. In abgesenktem Zustand der Förderauflage 10'.1 werden Gegenstände der Gruppen 11' von der Förderauflage 10'.1 auf die Förderauflage 10.1 gefördert und von da zur Stapelung. Bei abgehobener Förderauflage 10'.1 ist die Förderauflage 10.1 des ersten Fördersystems 10 frei für die Förderung einer Gruppe 11 zur Stapelvorrichtung 2. Bei Verwendung einer Stapelvorrichtung 2 mit zwei Stapeleinheiten, wie sie im Zusammenhang mit der Figur 1 beschrieben wurde, kann auf die Schwenkbarkeit der Förderauflage 10'.1 verzichtet werden und können Gruppen 11 und 11' simultan oder mindestens teilweise simultan gestapelt werden.The conveyor support 10'.1 of the second conveyor device 10 'is pivotally shown, such that it can be lowered onto the conveyor support 10.1 of the first conveyor device 10 and can be raised therefrom. In the lowered state of the conveyor support 10'.1 objects of the groups 11 'are conveyed from the conveyor support 10'.1 to the conveyor support 10.1 and from there to the stacking. When the conveyor support 10'.1 is lifted, the conveyor support 10.1 of the first conveyor system 10 is free for conveying a group 11 to the stacking device 2. When using a stacking device 2 with two stacking units, as described in connection with FIG the conveyor support 10'.1 be omitted and groups 11 and 11 'can be stacked simultaneously or at least partially simultaneously.

Figur 5 zeigt eine weitere, beispielhafte Ausführungsform des erfindungsgemässen Verfahrens anhand einer weiteren, schematisch dargestellten Einrichtung. Das Verfahren stimmt mit dem Verfahren gemäss Figur 4 überein bis auf den Drehschritt C um eine Senkrechte zu den Gegenstandsflächen, die hier durch eine Kreisbewegung quer zur Förderrichtung F eines Stückes 3' des Schienenstranges (Drehachse D.1, parallel zur Förderrichtung F) realisiert wird, wie dies durch das Detail 40 noch verdeutlicht wird. Gegenstände 7 bzw. Halteelemente 4, die zu Gruppen 11 gehören, werden auf dem verschiebbaren Schienenstück 3' blockiert, dann wird das Schienenstück 3' in die untere Position gedreht und die Gegenstände werden entlassen (erste Entlassungsstelle E). Gegenstände 7 bzw. Halteelemente 4, die zu Gruppen 11' gehören, passieren das verschiebbare Schienenstück 3' ohne Blockierung und Kreisbewegung und werden danach entlassen (Entlassungsstelle E'). Vorteilhafterweise sind, wie dies im Detail 40 dargestellt ist, zwei verschiebbare Schienenstücke 3' vorgesehen, die alternierend in der unteren und der oberen Position positioniert sind. Auf diese Weise wird es möglich, während der Entlassung einer Gruppe 11 an der ersten Entlassungsstelle E von einem Schienenstück 3' eine Gruppe 11' über das weitere Schienenstück 3' zur Entlassung in der zweiten Entlassungsstelle E' zu fordern. FIG. 5 shows a further, exemplary embodiment of the method according to the invention with reference to a further, schematically illustrated device. The method is in accordance with the method according to FIG 4 except for the rotation step C to a perpendicular to the object surfaces, which here by a circular movement transverse to the conveying direction F of a piece 3 'of the rail line (axis of rotation D.1, parallel to the conveying direction F) is realized , as will be clarified by the detail 40. Articles 7 or holding elements 4 belonging to groups 11 are blocked on the displaceable rail piece 3 ', then the rail piece 3' is turned to the lower position and the articles are discharged (first discharge point E). Articles 7 and holding elements 4, which belong to groups 11 ', pass the displaceable rail section 3' without blocking and circular movement and will be released afterwards (dismissal office E '). Advantageously, as shown in detail 40, two slidable rail pieces 3 'are provided which are alternately positioned in the lower and upper positions. In this way it becomes possible, during the discharge of a group 11 at the first discharge point E from a rail section 3 ', to request a group 11' via the further rail section 3 'for release in the second discharge point E'.

Wegen des verschiebbaren Schienenstückes 3' ist es offensichtlich nicht möglich, in der Einrichtung gemäss Figur 5 das Zuführungssystem 1 mit entlang eines Schienenstrangs individuell verfahrbaren Haltelementen 4 zu ersetzen durch ein Zuführungssystem 1 mit einer endlosen Transportkette und daran angeordneten Greifern, wie das für alle Ausführungsformen gemäss Figuren 1 bis 4 möglich ist.Because of the displaceable rail section 3 ', it is obviously not possible in the device according to FIG. 5 to replace the feed system 1 with holding elements 4 which can be moved individually along a rail track by means of a feed system 1 with an endless transport chain and grippers arranged thereon, as is the case for all embodiments Figures 1 to 4 is possible.

Figur 6 zeigt eine weitere, beispielhafte Ausführungsform des erfindungsgemässen Verfahrens anhand einer wiederum sehr schematisch dargestellten Einrichtung. Auch hier kommt ein bewegliches Schienenstück 3' zum Einsatz, das aber um eine Drehachse D.2 senkrecht zur Förderrichtung F gedreht wird, wodurch Gruppen 11 um eine Parallele zu den gehaltenen Kanten der Gegenstände 7 gedreht werden (Drehschritt A). Die derart gedrehten Gruppen 11 werden dann zwischen zwei Förderauflagen 10.1 und 10.2 einer ersten Fördervorrichtung 10 entlassen (Entlassungsstelle E) und während der als Schuppenstrom aufliegenden Förderung, die eine Biegung 33 aufweist, nochmals gedreht (Drehschritt B mit ganzer Drehung, das heisst 180°, um eine weitere Parallele zu den Gegenstandsflächen). FIG. 6 shows a further, exemplary embodiment of the method according to the invention on the basis of a device which is again shown very schematically. Again, a movable rail piece 3 'is used, but is rotated about a rotation axis D.2 perpendicular to the conveying direction F, whereby groups 11 are rotated about a parallel to the held edges of the objects 7 (rotation step A). The groups 11 thus rotated are then released between two conveying supports 10.1 and 10.2 of a first conveying device 10 (discharge point E) and rotated again during the conveyance, which has a bend 33 as a scale flow (rotation step B with complete rotation, ie 180 °, another parallel to the object surfaces).

Figur 7 zeigt eine weitere, beispielhafte Ausführungsform des erfindungsgemässen Verfahrens anhand einer weitern, schematisch dargestellten Einrichtung. Auch diese Einrichtung weist ein Zuführungssystem 1 (Schienenstrang mit individuell verfahrbaren Halteelementen oder Zugorgan mit daran angeordneten Greifern 6), ein Fördersystem 10 mit Förderauflage 10.1 und eine nicht dargestellte Stapelvorrichtung auf. Im Unterschied zu den weiter oben beschriebenen Ausführungsformen des erfindungsgemässen Verfahrens werden hier die Gegenstände 7 aller Gruppen 11 und 11' an Entlassungsstellen E und E', die gegebenenfalls zusammenfallen können, durch Ablage auf dieselbe Förderauflage 10.1 aus der gehaltenen Förderung entlassen. Vor dieser Ablage werden die noch gehaltenen Gegenstände 7 durch Drehen der die Gegenstände haltenden Greifer 6 relativ zum Förderweg 3 um im wesentlichen 90° gedreht (Drehschritte A und A' mit Teildrehungen für Gruppen 11 und 11' in entgegengesetzter Richtung). Bei der Entlassung aus der gehaltenen Förderung werden die Gruppen 11 in einer Richtung abgelegt, die der Ablegerichtung der Gruppen 11' entgegengesetzt ist (Drehschritte B und B' mit Teildrehungen). Nach der Ablage müssen die Gruppen auf der Förderauflage ausgerichtet (Pfeile P) werden, damit sie einen ausgerichteten Gruppenstrom bilden, der als solcher direkt einer Stapelvorrichtung (nicht dargestellt) zugeführt werden kann. FIG. 7 shows a further, exemplary embodiment of the method according to the invention on the basis of a further, schematically illustrated device. This device also has a feed system 1 (rail track with individually movable holding elements or pulling element with grippers 6 arranged thereon), a conveyor system 10 with conveyor support 10.1 and a stacking device, not shown. In contrast to the embodiments of the method according to the invention described above, the objects 7 of all groups 11 and 11 'at discharge points E and E', which may possibly coincide, are released from the held conveyor by being deposited on the same conveyor support 10.1. Prior to this filing, the still held objects 7 are rotated by rotating the gripper 6 holding the objects relative to the conveying path 3 by substantially 90 ° (rotational steps A and A 'with partial rotations for groups 11 and 11' in the opposite direction). When released from the held promotion, the groups 11 are deposited in a direction opposite to the direction of deposition of the groups 11 '(rotation steps B and B' with partial rotations). After deposition, the groups must be aligned on the conveyor support (arrows P) to form an aligned group flow, which as such can be fed directly to a stacker (not shown).

Greifer 6, die Teile von Haltelementen oder an einem Zugorgan angeordnet sind und die in der in Figur 7 dargestellten Weise gesteuert relativ zum Förderweg 3 drehbar sind, Steuermittel zur Steuerung derartiger Greiferdrehungen (Drehschritte A und A'), Mittel zum Ablegen von Gegenständen 7 in verschiedener Richtung auf die Förderauflage 10.1 (Drehschritte B und B') sowie Mittel zum Ausrichten von als Schuppenformation auf der Förderauflage 10,1 abgelegten Gruppen 11 und 11' von Gegenständen 7 sind dem Fachmann bekannt, sodass dieser die in der Figur 7 nur sehr schematisch dargestellte Einrichtung in Kenntnis der erfinderischen Lehre ohne Probleme realisieren kann.Gripper 6, the parts of holding elements or on a pulling member are arranged and in the manner shown in Figure 7 controlled relative to the conveying path 3 are rotatable, control means for controlling such gripper rotations (rotation steps A and A '), means for depositing objects 7 in various direction on the conveyor support 10.1 (B and B 'rotational steps) and means for aligning deposited as a scale formation on the conveyor support 10,1 groups 11 and 11' of objects 7 are known in the art, so that this in the figure 7 only very schematically illustrated device with knowledge of the inventive teaching can realize without problems.

Die Figuren 1 bis 7 und die dazugehörenden Beschreibungsteile illustrieren beispielhafte Verfahrensvarianten bzw. beispielhafte Ausführungsformen der erfindungsgemässen Einrichtung, die je zwei zusammengehörende Schrittfolgen zur Erstellung der relativ zueinander gedrehten Gegenstandsgruppen 11 und 11' bzw. Mittel zur Durchführung der Schrittfolgen aufweisen. Selbstverständlich können die in den einzelnen Schrittfolgen enthaltenen Schritte, insbesondere die Drehschritte A, B und/oder C auch anders zu anderen Schrittfolgen kombiniert werden, woraus weitere Ausführungsformen des erfindungsgemässen Verfahrens entstehen, die ebenso zum Erfindungsgedanken der vorliegenden Anmeldung gehören wie die in den Figuren spezifisch dargestellten Ausführungsformen.FIGS. 1 to 7 and the associated parts of the description illustrate exemplary method variants or exemplary embodiments of the device according to the invention, each of which has two associated step sequences for producing the article groups 11 and 11 'rotated relative to each other Implementation of the step sequences. Of course, the steps contained in the individual steps, in particular the rotational steps A, B and / or C can also be combined differently to other sequences of steps, resulting in further embodiments of the inventive method, which also belong to the spirit of the present application as specific in the figures illustrated embodiments.

Alle Ausführungsformen der erfindungsgemässen Einrichtung können auch eine Mehrzahl von Stapelvorrichtungen 2 aufweisen. Dabei ist der Förderweg 3 des Zuführungssystems 1 beispielsweise nacheinander in den Bereich jeder Stapelvorrichtung zu führen, sind für jede Stapelvorrichtung 2 entsprechende Entlassungsstellen E und E' mit Steuermitteln zur gruppenweisen Entlassung von Gegenständen 7 aus der gehaltenen Förderung und Fördervorrichtungen 10 und gegebenenfalls 10' für eine aufliegende Förderung vorzusehen. Dabei sind die Steuermittel an Entlassungsstellen derart zu steuern, dass beispielsweise bei einer ersten Stapelvorrichtung jede erste (11 entlassen in E) und dritte (11' entlassen in E'), bei einer zweiten Stapelvorrichtung jede zweite (11 entlassen in E) und vierte (11' entlassen in E') der zugeführten Gruppen entlassen wird.All embodiments of the device according to the invention can also have a plurality of stacking devices 2. In this case, the conveying path 3 of the feeding system 1, for example, successively in the range of each stacking device, are for each stacking device 2 corresponding discharge points E and E 'with control means for group release of objects 7 from the held promotion and conveyors 10 and optionally 10' for a provision for support. In this case, the control means are to be controlled at discharge points such that, for example, in a first stacking device, each first (11 discharged in E) and third (11 'discharged in E'), in a second stacking device every second (11 discharged in E) and fourth ( 11 'dismissed in E') of the supplied groups.

Claims (31)

  1. Method for producing cross stacks (12) from flat objects (7), the stacks comprising stack sections displaced rotationally in relation to one another by 180° around a stack axis, wherein the objects (7) are supplied to be stacked being conveyed serially along a conveying track (3) in an individually held manner and aligned with one another and alternating groups of the objects are then subjected to a first and a second step sequence and the alternating groups from the first and the second step sequences are then stacked, and wherein the two step sequences together comprise at least one rotation step (A, B, C), resulting in a rotation difference of 180° around an axis perpendicular to the object surfaces between the two step sequences, characterized in that, in both step sequences, the objects (7) are released from the individually held conveyance to be supplied to the stacking lying in an imbricated stream, wherein the releasing in the first and second step sequences is carried out in differing releasing points (E, E') and wherein the at least one rotation step (A, B, C) is carried out during the individually held conveyance and without take-over into a further held conveyance, during the release from the individually held conveyance and/or during the conveyance in the imbricated stream.
  2. Method according to claim 1, characterized in that the at last one rotation step (A, B, C) carried out during held conveyance of the objects (7) comprises conveyance along a conveying track loop (30) or a conveying track twist (31) or comprises rotation of the held objects (7) relative to the conveying track (3).
  3. Method in accordance with claim 2, characterized in that the rotation of the held objects (7) relative to the conveying track is implemented by rotating a section of rail (3'), along which grippers (6) holding the objects (7) are movable, or by rotating the grippers (6) relative to the conveying track.
  4. Method according to claim 1, characterized in that the at least one rotation step (A, B) carried out during conveyance in an imbricated stream of the objects comprises conveyance of the objects through a twist of the conveying track (31) or around a bend in the conveying track (33).
  5. Method in accordance with claim 1, characterized in that the at least one rotation step (A) carried out during release of the objects (7) from held conveyance to lying conveyance is a release of the objects from a substantially vertical conveying position to a substantially lying conveying position.
  6. Method according to claim 1, characterized in that the rotation difference is established by a rotation step (C) in one of the step sequences and comprising rotating the objects (7) by 180° around an axis perpendicular to the object surfaces.
  7. Method in accordance with claim 1, characterized in that the rotation difference is established by rotation steps (A, B) comprising rotations around two axes parallel to the object surfaces.
  8. Method according to claim 7, characterized in that of the rotations around two axes parallel to the object surfaces at least one is carried out as one rotation step (A, A' and B, B') in each one of the two step sequences and having opposing rotation directions.
  9. Method for producing cross stacks (12) from flat objects (7), the stacks comprising stack sections displaced rotationally in relation to one another by 180° around a stack axis, wherein the objects (7) are supplied to be stacked being conveyed serially along a conveying track (3) in an individually held manner and aligned with one another and alternating groups of the objects are then subjected to a first and a second step sequence and the alternating groups from the first and the second step sequences are then stacked, and wherein the two step sequences together comprise at least one rotation step (A, B, C), resulting in a rotation difference of 180° around an axis perpendicular to the object surfaces between the two step sequences, characterized in that the objects (7) are released from the individually held conveyance, in one of the two step sequences to be conveyed lying in an imbricated stream, and, in the other step sequence, to be directly stacked, wherein in the first and in the second step sequences the objects are released at differing releasing points (E, E') and wherein the at least one rotation step (A, B, C) is carried out during the individually held conveyance and without take-over into a further held conveyance.
  10. Method according to claim 9, characterized in that the at least one rotation step (A, B, C) carried out during the individually held conveyance of objects (7) comprises conveyance along a conveying path loop (30), through which the objects (7) are rotated by 180° around an axis perpendicular to the object surfaces in one of the step sequences.
  11. Method for producing cross stacks (12) from flat objects (7), the stacks comprising stack sections displaced rotationally in relation to one another by 180° around a stack axis, wherein the objects (7) are supplied to be stacked being conveyed serially along a conveying track (3) in an individually held manner and aligned with one another and alternating groups of the objects are then subjected to a first and a second step sequence and the alternating groups from the first and the second step sequences are then stacked, and wherein the two step sequences together comprise at least one rotation step (A, B, C), resulting in a rotation difference of 180° around an axis perpendicular to the object surfaces between the two step sequences, characterized in that the objects (7) are released from the individually held conveyance to be conveyed lying in an imbricated stream towards stacking, wherein, in both step sequences, the objects are released to be lying on the same conveying support, wherein release in the first and second step sequences is carried out in differing releasing points (E, E') in opposing directions and wherein the at least one rotation step (A, B, C) is carried out during the individually held conveyance and without take-over into a further held conveyance and during the release from the individual held conveyance.
  12. Method according to claim 11, characterized in that the at least one rotation step (A, B, C) carried out during the individually held conveyance of the objects (7) is a rotation of the held objects (7) in relation to the conveying path (3).
  13. Method according to claim 12, characterized in that the rotation of the individually held objects (7) in relation to the conveying path is brought about by means of a rotation of the grippers (6) in relation to the conveying path.
  14. Method according to claim 11, characterized in that the at least one rotation step (A) carried out on release of the objects from the held conveyance into the conveyance of the objects (7) in an imbricated stream is a release from a substantially vertical into a substantially lying conveying position.
  15. Method according to claim 11, characterized in that the rotation difference is formed by rotation steps (A, B) with rotations around two parallels to the object surfaces.
  16. Method according to claim 15, characterized in that both rotations around the two parallels to the object surfaces are carried out as rotation steps (A, A' or B, B') in both step sequences with opposing rotation directions.
  17. Method according to claims 1 to 16, characterized in that the objects (7) are positioned in a stacking shaft (20) for stacking.
  18. Method according to claim 17, characterized in that the objects (7) are positioned in the stacking shaft (20) in groups alternatingly from two opposing sides and/or on two superposed levels.
  19. Arrangement for producing cross stacks (12) from flat objects (7) being supplied serially and uniformly aligned, which arrangement comprises a supply system (1) and a stacking device (2), wherein the supply system comprises grippers (6) for supplying the objects serially, individually held and uniformly aligned along a conveying track (3) in a conveying direction (F) and wherein the supply system further comprises a first release point (E) with a first release means for releasing objects (7) from held conveyance in a controlled manner, characterized in that the supply system (1) further comprises a second release point (E') situated at a distance downstream from the first release point (E) with a second release means for releasing objects (7), that at least the first release means is controlled for releasing groups of objects and for passing other groups of objects and that the arrangement further comprises at least one conveying system (10, 10') each respectively with a conveying surface (10.1, 10.2, 10'.1, 10'.2) and each respectively being arranged between at least one of the release points (E or E') and the stacking device (2), wherein the supply system (1) between the first and the second release point (E und E') and/or the at least one conveying device (10, 10') are arranged or are equipped with rotation means in such a manner, that the objects (7) depending on their release at the first or at the second release point (E, E') are rotated around an axis perpendicular to the object surfaces with a rotation difference of 180°.
  20. Arrangement in accordance with claim 19, characterized in that, between the first and the second release point (E and E'), the supply system (1) comprises a conveying track loop (30), a conveying track twist (31) or a rail section (3') being rotatable around an axis (D.1, D.2) either parallel or perpendicular to the conveying track.
  21. Arrangement according to claim 19, characterized in that the at least one conveying device (10, 10') comprises two conveying surfaces (10.1, 10.2, 10'.1, 10'.2) and that the conveying surfaces define a bend or a twist in the conveying track (33).
  22. Arrangement in according to claim 19, characterized in that two conveying devices (10, 10') each respectively with a substantially horizontal conveying surface (10.1, 10'.1) are provided and that the supply system (1) is equipped for suspended conveyance and that the two conveying devices (10, 10') are connected with the supply system (1) in such a manner, that released objects (7) are deposited on the two conveying surfaces (10.1, 10'.1) in opposite directions.
  23. Arrangement according to one of claims 13 to 19, characterized in that the stacking device (2) is equipped for a supply of objects to be stacked (7) from two opposing sides and/or on two superposed stacking levels.
  24. Arrangement for producing cross stacks (12) from serially supplied, flat objects (7), which arrangement comprises a supply system (1) and a stacking device (2), wherein, for supplying the objects (7) serially, individually held and uniformly aligned along a conveying track (3) in a conveying direction (F), the supply system (1) is equipped with grippers (6) and wherein the supply system further comprises a first release point (E) comprising a first release means for releasing objects (7) from held conveyance in a controlled manner, characterized in that the supply system (1) comprises a second release point (E') with a second means for controlled release of objects (7) distanced downstream from the first release point (E), that at least the first release means is controlled for groupwise release and groupwise passing of objects (7) and that the arrangement further comprises a conveying device (10') with at least one conveying support (10'.1) arranged between the second release point (E') and the stacking device (2), wherein the supply system (1) is arranged between the first and the second release point (E and E') such that the objects (7), depending on the release at the first or at the second release point (E, E'), are rotated around an axis perpendicular to the object surfaces with a rotation difference of 180° without take-over into a further held conveyance.
  25. Arrangement according to claim 24, characterized in that the supply system (1) comprises a conveying path loop (30) between the first and the second release points (E and E').
  26. Arrangement according to one of claims 19 to 25, characterized in that the stacking device (2) is equipped for being supplied with objects (7) to be stacked from two sides opposite one another.
  27. Arrangement for producing cross stacks (12) from serially supplied, flat objects (7), which arrangement comprises a supply system (1) and a stacking device (2), wherein, for supplying the objects (7) serially, individually held and uniformly aligned along a conveying track (3) in a conveying direction (F), the supply system (1) is equipped with grippers (6) and wherein the supply system further comprises a first release point (E) comprising a first release means for releasing objects (7) from held conveyance in a controlled manner, characterized in that the supply system (1) comprises a second release point (E') which is different from the first release point (E) and comprises means for releasing objects (7), that the conveying path (3) of the supply system (1) is arranged above a conveying support (10.1) which leads towards the stacking device and the release points (E and E') are arranged above the conveying support, that in the release points (E and E') or upstream thereof means for rotating the grippers (6) in relation to the conveying path are provided, wherein these rotating means are equipped for a rotation in one direction for the one release point and for a rotation in the opposite direction for the other release point and that in the release points (E and E') means are provided for the placing of objects (7) on the conveying support (10.1) in groups, wherein the release means are equipped for a release in one direction for one release point and for a release in the opposite direction in the other release point.
  28. Arrangement according to claim 27, characterized in that the second release point (E') is arranged downstream from the first release point (E).
  29. Arrangement according to claim 27, characterized in that the two release points (E and E') coincide locally.
  30. Arrangement according to one of claims 19 to 29, characterized in that the supply system (1) comprises an endlessly circulating traction organ (32) and grippers (6) being arranged on the traction organ.
  31. Arrangement according to one of claims 19 to 29, characterized in that the supply system (1) comprises a rail track defining a conveying path (3) and individually displaceable holding elements (4) with grippers (6) as well as a drive for the conveyance of the holding means (4) along the rail track, to which drive the holding elements are coupleable.
EP01957673A 2000-08-18 2001-08-13 Method and arrangement for the production of crossed stacks Expired - Lifetime EP1309504B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH161300 2000-08-18
CH16132000 2000-08-18
PCT/CH2001/000496 WO2002014194A1 (en) 2000-08-18 2001-08-13 Method and arrangement for the production of crossed stacks

Publications (2)

Publication Number Publication Date
EP1309504A1 EP1309504A1 (en) 2003-05-14
EP1309504B1 true EP1309504B1 (en) 2006-01-04

Family

ID=4565656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01957673A Expired - Lifetime EP1309504B1 (en) 2000-08-18 2001-08-13 Method and arrangement for the production of crossed stacks

Country Status (8)

Country Link
US (1) US6746202B2 (en)
EP (1) EP1309504B1 (en)
AT (1) ATE314995T1 (en)
AU (2) AU7953701A (en)
CA (1) CA2419754A1 (en)
DE (1) DE50108627D1 (en)
DK (1) DK1309504T3 (en)
WO (1) WO2002014194A1 (en)

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US7398134B2 (en) * 2004-09-01 2008-07-08 Hallmark Cards, Incorporated Sorting apparatus with arbitrary user-specified sequence control
US7527261B2 (en) * 2006-07-13 2009-05-05 Lockheed Martin Corporation Mailpiece container for stacking mixed mail and method for stacking mail therein
CH705026A2 (en) * 2011-05-16 2012-11-30 Ferag Ag Apparatus and method for generating an uninterrupted imbricated stream of flat product units, in particular printed products.
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EP2604237B1 (en) * 2011-12-14 2014-07-23 The Procter and Gamble Company Apparatus and process for providing arrays of absorbent articles in varying orientations for packaging
JP5969434B2 (en) * 2013-07-17 2016-08-17 トヨタ自動車株式会社 Element array device and element array method

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Also Published As

Publication number Publication date
DE50108627D1 (en) 2006-03-30
CA2419754A1 (en) 2002-02-21
AU2001279537B2 (en) 2006-07-06
US20030185663A1 (en) 2003-10-02
EP1309504A1 (en) 2003-05-14
AU7953701A (en) 2002-02-25
US6746202B2 (en) 2004-06-08
ATE314995T1 (en) 2006-02-15
WO2002014194A1 (en) 2002-02-21
DK1309504T3 (en) 2006-05-08

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