EP1184283B1 - Method and device for tying stacks of printing products - Google Patents

Method and device for tying stacks of printing products Download PDF

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Publication number
EP1184283B1
EP1184283B1 EP01810800A EP01810800A EP1184283B1 EP 1184283 B1 EP1184283 B1 EP 1184283B1 EP 01810800 A EP01810800 A EP 01810800A EP 01810800 A EP01810800 A EP 01810800A EP 1184283 B1 EP1184283 B1 EP 1184283B1
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EP
European Patent Office
Prior art keywords
strapping
stack
presser arms
tape
accordance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP01810800A
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German (de)
French (fr)
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EP1184283A1 (en
Inventor
Erwin Müller
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Ferag AG
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Ferag AG
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Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
    • B65B27/08—Bundling paper sheets, envelopes, bags, newspapers, or other thin flat articles

Definitions

  • the invention is in the field of packaging technology and relates to a method and a device according to the preambles of the corresponding independent Claims.
  • the method and device are used for strapping stacks of Printed products. They are particularly suitable for use with stacks different stack heights and for stacks of printed products with one edge, in whose area the product is thicker than in other areas and which the stack stability reduced by their increased thickness.
  • Such printed products are, for example folded newspapers or magazines with one glued or stapled Back edge.
  • Print products are made from a rotary press or from a reel, but also from various Further processing devices (e.g. insert drum) as a shingled stream designed. These products are usually used for transport and distribution stacked (usually in cross stacks) and the stacks are optionally covered with cover sheets provided and optionally wrapped and then strapped so that they can be transported stably are.
  • Further processing devices e.g. insert drum
  • Devices for strapping stacks of printed products are known to the person skilled in the art known for example from publication DE-3248788. These devices point usually a loop-shaped band channel, means for positioning a strapping from the supply roll in the belt channel, means for tightening and tensioning the in the band channel presented band loop around a positioned in the area of the band channel Stack and means for closing the strapping around the stack and severing of the strapping closed around the stack from the supply roll.
  • the Belt channel is arranged and designed such that it feeds and leads away of the stack is not affected, and such that the strapping is tightened can be easily pulled out of the channel along its entire length.
  • Attaching strapping around a stack of printed products can be problematic be when the stack has little stability and is therefore difficult to manipulate and transported for strapping from a stacking shaft to a strapping position must be, which is usually the case in known arrangements. there the stack has to be braked, strapped and accelerated again. Because the stack is relatively unstable, no large accelerations are possible, which causes the cycle time becomes relatively long.
  • Publication WO-00/34127 describes a device with which the above mentioned problems caused by the instability of stacks are solved in that the stack from the stack shaft directly between two press arms be pushed and only released from the press arms when they are wrapped and are thereby stabilized at least to a limited extent.
  • the wrapping around the Press arms are applied and the stacks with the wrapping are then removed from the press arms pushed.
  • Such a wrapping only leads to stack stabilization if the wrapping material is still pulled out Press arms are still tight enough around the stack.
  • the wrapping material is sufficiently elastic and can be tensioned sufficiently and / or that the stacked objects are sufficiently elastically compressible and sufficient can be pressed together. If this is not the case, the stack must be in front of or are strapped in a separate step after the wrapping, the same Problems occur as described above for stacks that are not stabilized or not sufficiently stabilized are.
  • the wrapping is realized in accordance with the above-mentioned publication in that the stack held pressed by the press arms against one another via its conveying path extending curtain of a wrapping material is moved, which curtain in the case of further conveyance around the leading side of the stack and the Press arms and on the trailing stack side to a self-contained Wrapping can be closed.
  • the wrapping material becomes like this at the same time separated that it again forms a curtain for a subsequent stack
  • the publication US-4870807 describes a device with which stacks in one Feed direction fed into a strapping position and there parallel to Feeding direction are strapped (longitudinal strapping). During feeding and strapping the stacks are held between two pairs of press arms.
  • Method and device for strapping of printed product stacks, with which in particular relatively unstable, possibly already wrapped stacks are easily strapped.
  • Method and device should have as few conditions on the stacks and strapping as possible and should also be easily adaptable for strapping stacks with different stack heights.
  • the invention is essentially based on the stack between two press arms pressed to be fed to a strapping position in a manner essentially is described in the publication WO-00/34127 already mentioned above.
  • the stacks are strapped with a strapping tape while the stack is through the press arms are kept pressed. So that the strapping is not the same, is subject to restrictive conditions such as the wrapping according to the aforementioned Publication, the strap loop required for the strapping is indeed in the area the stack end faces around the press arms, but in the two Press arms each have a slot-like opening to which the belt loop is aligned and through which the strapping is pulled when tightening the loop is also to be positioned directly on the stack on the end faces of the stack can.
  • the slot-like openings of the two press arms are aligned and have two closed ends or one closed and one open end. she are designed so that the closed ends are between the press arms protrude the stack held so that the strapping for the application of the Band loop next to the stack through the openings from the area between the Press arms can be guided to the outside of the press arms and back again.
  • Tape guides e.g. tape channel
  • Part of the Belt guides advantageously mounted on the press arms and is together with the stack held by the press arms in the strapping position, where it stationary belt guide parts added.
  • the strapping is advantageously only put on when there is already a wrapping material is placed around the stack and the press arms so that the strapping is outside the envelope is arranged.
  • the cover only needs a protective function to take over while the stack stabilization function is taken over by the strapping becomes.
  • the stack wrapping is already from them conditions mentioned above regarding elasticity of the wrapping material and / or completely relieved of the compressibility of the stack. For strapping no such conditions apply since it is not placed around the press arms.
  • the two press arms which receive a stack of presses, have one another, for example aligned, proximal and distal ends, are with their proximal ends coupled to a drive and have at least one in the manner of forks slit-shaped opening extending towards the distal end and open at the distal end between two prongs.
  • the strap to be attached leads to the closed one Ends of the slit-shaped openings through the forks, over the slit-shaped Openings on the outer sides of the forks and close over the distal ones Ends of the forks.
  • the means for tightening / tightening, for closing e.g.
  • the above Means can also be in a region between the distal ends of the Forks can be arranged.
  • a stack of printed products is therefore between two forks assigned to each other a pair of forks positioned, pressed between them and in the pressed state for a strapping led into a strapping position.
  • upstream wrapping position or in the strapping position can also be a Wrapping the stack can be realized.
  • FIG. 1 schematically shows an exemplary embodiment of the strapping device 1 according to the invention in a perspective illustration.
  • a feed device 2 on which stacks 3 of printed products are fed in the direction of an arrow P1 of the strapping device 1 can be seen.
  • the strapping device 1 has a substructure 10, a column 11 with, for example, four fork pairs (8.1 and 8.2 each) and a strapping position 13 in which a stack 3 is strapped.
  • the column 11 is arranged so that it can be rotated step by step about an axis A perpendicular to the base 10 and is moved by a drive which is integrated in the base 10.
  • the fork pairs each comprise a lower fork 8.1 and an upper fork 8.2, which are coupled to the column in the region of their proximal end.
  • the upper forks 8.2 are arranged to be individually displaceable along the column 11 for pressing the stacks and for handling stacks of different heights.
  • the fork pairs and stacks pressed by them are moved by the column 11 step by step around the axis A.
  • the fork pairs can be performed differently, respectively. can be shifted (eg linearly using link chains).
  • a stack to be processed is fed by the feed device 2 between two each other assigned forks 8.1, 8.2 brought and pressed by lowering the upper fork 8.2 and held. By rotating the column 11, for example by 90 °, the held one Stack then brought into the strapping position 13.
  • FIG. 2 shows the strapping device 1 from FIG. 1 without the feed device 2 and the removal device 4 in a perspective view.
  • a stack 3 of printed products can be seen, which is held pressed between two forks 8.1 and 8.2 assigned to one another.
  • the stack 3 is securely held and guided during the feeding to the strapping position 13, during the strapping in the strapping position and while leading away from the strapping position by the two forks 8.1 and 8.2 which are assigned to one another, as a result of which very high accelerations are possible.
  • the strap guide means 16 which is used to create a strap loop for the strapping serves, is composed of different, partly stationary arranged in the strapping position 13, partly movable parts together with the fork pairs.
  • a stationary, lower one Channel part 16.1 arranged in which, for example, the means for tensioning, closing and separating (not shown) the strapping are integrated.
  • a stationary, distal channel part 16.2 arranged in the area of distal fork ends is also a stationary, distal channel part 16.2 arranged is directed essentially vertically upwards from the lower channel part 16.1 except for one Height, which is greater than the highest position of the upper fork 8.2, and at which one connects upper, also stationary duct part 16.3.
  • the upper channel part 16.3 extends over the upper fork 8.2 against the proximal end of the fork pair and connects to another, essentially vertical canal part (more proximal Channel part 16.4).
  • This proximal channel part 16.4 is such on the lower fork 8.1 attached that it is aligned with the closed end of the slit-shaped opening is. From there it leads through the closed end of the slit-shaped opening of the upper one Fork 8.2, the upper fork 8.2 relative to this proximal channel part 16.4 is movable up and down.
  • Each of the fork pairs has a proximal channel part 16.4 on.
  • the band channel is equipped in a manner known to the person skilled in the art such that it the strapping can lead to the creation of the strap loop and that the strap pulled out of the channel over the entire length of the channel when tightening and can be positioned on the stack.
  • can Parts of the band channel, in particular the proximal channel part 16.4 are also missing and can be the belt can be guided through loop areas without a guide channel by other means.
  • the strapping can, for example, for self-guidance by means of profile rollers bent in its cross section or profiled otherwise and thereby stiffened or it can be guided by air jets aligned in the direction of the belt.
  • FIG. 3 shows a detailed view D from FIG. 2.
  • Two forks 8.1, 8.2, which are assigned to one another, can be seen, the upper of which is mounted in a linear guide 20 on the column 11 and can be moved up and down.
  • the proximal channel part 16.4 is firmly connected to the lower fork 8.1, its opening being aligned with a slot-shaped opening 19.1 between two prongs 18 of the fork 8.1, in particular with the closed end of this opening 19.1.
  • the proximal canal part 16.4 may continue below the lower fork in order to connect to the lower canal part 16.1.
  • the proximal canal part 16.4 projects upward from the lower fork through a slit-shaped opening 19.2 aligned with the slit-shaped opening 19.1 between two prongs of the upper fork 8.2 and over the upper fork (in its highest position), in such a way that it contacts the upper canal part 16.3 ( Figure 2) can connect.
  • the upper fork 8.2 can be freely moved up and down relative to the proximal channel part 16.4.
  • FIG. 4 shows schematically and by way of example another strapping device 1 in a perspective view.
  • the strapping device 1 essentially corresponds to the system shown in FIG. 1, which is why the individual elements which have already been described in connection with FIG. 1 are designated by the same reference numerals and are no longer described.
  • the strapping device 1 shown is also equipped as a wrapping device, in that it has a wrapping position 22 in front of the strapping position 13 in the direction of movement of the stack 3.
  • the wrapping position 22 for example, the following, known, serving the wrapping means are provided: a roll holder 23 for two rolls 24.1, 24.2 of a wrapping material 25 (e.g. made of polyethylene film) and means (26.1 and 26.2) for closing and separating the wrapping material 25 on the trailing stack side.
  • the wrapping material 25 forms between the two rollers 24.1 and 24.2 a curtain extending over the path of movement of the stacks 3 held by the fork pairs, which is carried along by a conveyed stack 3, wraps around stack 3 and forks 8.1 and 8.2 and closes behind the stack an envelope is closed and separated from the rolls, such that it extends again for the next stack in a curtain-like manner over the movement path.
  • the strapping position 13 In the strapping position 13 they are already in connection with FIGS 3 described means for creating a strap, in particular parts of the Tape guide 16, means (not shown) for feeding the strapping tape 27 a tape roll and means (not shown) for tensioning, closing and separating of the strapping 27 is arranged.
  • the one arranged stationary in the strapping position 13 Part of the tape guide 16 is for each strapping by one with the corresponding one Proximal channel part 16.4 fed to a pair of forks into a loop-shaped one Leadership supplemented.
  • the strapping 27 is inserted into the channel so that it forms a loop around a stack.
  • the supply roll for example, a tape storage device and a tape feed device to be provided, which are installed in the substructure 10, for example.
  • FIG. 5 shows an enlarged detail A from FIG. 4.
  • a stack 3 can be seen pressed between two forks 8.1 and 8.2 that are assigned to one another, which is strapped with a strapping band 27 and has previously been wrapped with a wrapping material 25.
  • the strapping band 27 lies in slot-like openings between the prongs 18 of the forks 8.1 and 8.2 closely against the stack 3, while the wrapping material also coats the forks.
  • bolts are inserted between the proximal ends of the prongs 18 such that they protrude from both forks and then moved against the proximal end of the prongs, whereby the wrapped and Push the strapped stack off the forks.
  • FIG. 6 shows a further preferred embodiment of the strapping device 1 according to the invention in a perspective view.
  • the strapping device 1 essentially corresponds to the device shown in FIG. 4, which is why the elements already described are no longer described.
  • wrapping position 22 and strapping position 13 are identical, such that a stack 3 can be wrapped and strapped essentially simultaneously.
  • a stack 3 to be strapped in a loading position in the area of the feed device 2 is gripped by a pair of forks 8.1, 8.2 and a wrapped and strapped stack 3 in a release position in the area of the removal device 4 is pushed by a pair of forks and led away.
  • FIGS. 7 and 8 show exemplary embodiments of the strap guide 16, which is to be provided for creating the strap loop in the strapping position 13 of the strapping device according to the invention.
  • the figures are sections along the slit-shaped openings 19.1 and 19.2 of a fork pair (8.1, 8.2) which holds a stack 3 pressed.
  • the figures in the strap guide 16 also show the strap loop of the strapping 27 (as a dash-dotted line), a supply roll 28 from which the strapping is pulled, and schematically summarized as a box 29, the means for feeding the strapping 27 to the strap guide 16 and the means for Tightening / tensioning, closing and severing the strapping 27.
  • FIG. 7 is essentially the same as in the figures 1 to 6, with a band channel completely defining the band loop consisting of a stationary lower, distal and upper channel part (16.1, 16.2 and 16.3) and with one with the fork pair 8.1 and 8.2 in the strapping position moved proximal canal part 16.4, which extends through the closed ends the slot-shaped openings 19.1 and 19.2 in the forks 8.1 and 8.2 continues.
  • the upper channel part 16.3 are moved with the forks 8.1 and 8.2, so that the boundary between the stationary duct part and the moving duct part at the 17 designated place.
  • the upper part of the channel can also be in the upper part Press arm 8.2 can be integrated.
  • Figure 8 shows an embodiment of tape guides 16, in which only over and under the forks 8.1 and 8.2 a channel part (lower and upper channel part 16.1 and 16.3) is provided while the distal and proximal canal part is missing.
  • a channel part lower and upper channel part 16.1 and 16.3
  • the distal and proximal canal part is missing.
  • For one problem-free creation of a tape loop are for the areas without tape channel to provide other management means.
  • These are at least collecting funnels 18 to the the ends of the existing duct parts and / or nozzles to catch the band end Generation of air jets that sweep the strapping across the channelless areas to lead.
  • the strapping can also be done by a Appropriate profiling can be stiffened in order to be easily guided via the guide Areas to be moved.
  • the embodiment according to FIG. 8 has the advantage that in the strapping position both the distal and the proximal side of the stack remain accessible, for example for means with which parts of the wrapping protruding from the stack sides can be pulled over these sides and closed around the stack.
  • the two press arms or press forks 8.1 and 8.2 the stack from below and above and becomes the upper press arm for pressing one Stack and its delivery and reception against and from the lower press arm moves away (up and down) while the lower press arm does not vary Height. All this is not a condition for the invention.
  • the press arms always press the stack from its end faces, but these can have a position in space.
  • the press arms are movable relative to one another. there it is advantageous to always close the one of the press arms in the strapping position position and especially the means for tightening / tightening, closing and severing the strapping on the outside of the thus positioned Arrange press arm, as is the case in Figures 7 and 8.
  • FIG. 9 shows how the method according to the invention is advantageous for creating a Cross strapping around a stack held between press arms, if necessary is also encased, can be added.
  • the stack 3, as shown above in FIG. 9 is, as already described, held pressed by press arms 8.1 and 8.2, wrapped with a wrapping material 25 and with a strapping 27 straps, the wrapping including the press arms and the strapping is arranged above the envelope, is directed transversely to the envelope and in slot-shaped Openings 19.1 and 19.2 of the press arms 8.1 and 8.2 run. That stack with wrapping and strapping is now closed by means of bolts 40 Inserted ends of further slot-shaped openings 19 'and against the distal End of the press arms are moved, pushed by the press arms.
  • the stack is only pushed halfway from the press arms and thus in positioned another strapping position. In this position he becomes in itself known manner transversely to the direction of ejection with another strapping 27 ' strapped.
  • the ejection bolts 40 become wider moved and the stack 3 is pushed completely from the press arms.
  • the second strapping can be done with the fork pair in the same position to be created.
  • it is in another, on the strapping position created the following discharge position.
  • the strap guide for such strapping advantageously has the outside of the lower press arm on a corresponding opening in the Press arm aligned, stationary duct part and one in the upper press arm integrated duct part.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

The method for banding stacks (3) of printed products, which may vary in height, comprises applying press arms (8.1, 8.2) with a central slot (19.1, 19.2) to the top and bottom of the stack. The band (27) is then fitted over these and can be positioned by them. An Independent claim is included for a machine for carrying out the method.

Description

Die Erfindung liegt auf dem Gebiete der Verpackungstechnik und betrifft ein Verfahren und eine Vorrichtung nach den Oberbegriffen der entsprechenden, unabhängigen Patentansprüche. Verfahren und Vorrichtung dienen zur Umreifung von Stapeln von Druckereierzeugnissen. Sie eignen sich insbesondere zur Anwendung für Stapel mit verschiedenen Stapelhöhen und für Stapel von Druckprodukten mit einer Kante, in deren Bereich das Produkt dicker ist als in anderen Bereichen und die die Stapelstabilität durch ihre erhöhte Dicke reduziert. Derartige Druckprodukte sind beispielsweise gefaltete Zeitungen oder Zeitschriften mit einer geklebten oder gehefteten Rückenkante.The invention is in the field of packaging technology and relates to a method and a device according to the preambles of the corresponding independent Claims. The method and device are used for strapping stacks of Printed products. They are particularly suitable for use with stacks different stack heights and for stacks of printed products with one edge, in whose area the product is thicker than in other areas and which the stack stability reduced by their increased thickness. Such printed products are, for example folded newspapers or magazines with one glued or stapled Back edge.

Druckprodukte werden ab Rotationspresse oder ab Wickel, aber auch von verschiedenen Weiterverarbeitungs-Vorrichtungen (z.B. Einstecktrommel) als Schuppenstrom ausgelegt. Für Transport und Verteilung werden diese Druckprodukte in der Regel gestapelt (meist in Kreuzstapeln) und die Stapel werden gegebenenfalls mit Deckblättern versehen und gegebenenfalls umhüllt und dann umreift, damit sie stabil transportierbar sind.Print products are made from a rotary press or from a reel, but also from various Further processing devices (e.g. insert drum) as a shingled stream designed. These products are usually used for transport and distribution stacked (usually in cross stacks) and the stacks are optionally covered with cover sheets provided and optionally wrapped and then strapped so that they can be transported stably are.

Vorrichtungen zum Umreifen von Stapeln von Druckprodukten sind dem Fachmann beispielsweise aus der Publikation DE-3248788 bekannt. Diese Vorrichtungen weisen üblicherweise einen schlaufenförmigen Bandkanal, Mittel zum Positionieren eines Umreifungsbandes ab Vorratsrolle im Bandkanal, Mittel zum Festziehen und Spannen der im Bandkanal vorgelegten Bandschlaufe um einen im Bereiche des Bandkanals positionierten Stapel und Mittel zum Schliessen der Umreifung um den Stapel und Abtrennen des um den Stapel geschlossenen Umreifungsbandes von der Vorratsrolle auf. Der Bandkanal ist derart angeordnet und ausgestaltet, dass er Zuführung und Wegführung des Stapels nicht beeinträchtigt, und derart, dass das Umreifungsband beim Festziehen auf seiner ganzen Länge problemlose aus dem Kanal herausgezogen werden kann.Devices for strapping stacks of printed products are known to the person skilled in the art known for example from publication DE-3248788. These devices point usually a loop-shaped band channel, means for positioning a strapping from the supply roll in the belt channel, means for tightening and tensioning the in the band channel presented band loop around a positioned in the area of the band channel Stack and means for closing the strapping around the stack and severing of the strapping closed around the stack from the supply roll. The Belt channel is arranged and designed such that it feeds and leads away of the stack is not affected, and such that the strapping is tightened can be easily pulled out of the channel along its entire length.

Das Anbringen einer Umreifung um einen Stapel von Druckprodukten kann problematisch sein, wenn der Stapel wenig Stabilität hat und dadurch schwierig manipulierbar ist und für die Umreifung von einem Stapelschacht in eine Umreifungsposition transportiert werden muss, was in bekannten Anordnungen üblicherweise der Fall ist. Dabei muss der Stapel abgebremst, umreift und wieder beschleunigt werden. Weil der Stapel relativ instabil ist, sind keine grossen Beschleunigungen möglich, wodurch die Zykluszeit relativ lang wird.Attaching strapping around a stack of printed products can be problematic be when the stack has little stability and is therefore difficult to manipulate and transported for strapping from a stacking shaft to a strapping position must be, which is usually the case in known arrangements. there the stack has to be braked, strapped and accelerated again. Because the stack is relatively unstable, no large accelerations are possible, which causes the cycle time becomes relatively long.

In der Publikation WO-00/34127 ist eine Vorrichtung beschrieben, mit der die oben genannten Probleme, die durch die Unstabilität von Stapeln entstehen, gelöst werden dadurch, dass die Stapel aus dem Stapelschacht unmittelbar zwischen zwei Pressarme geschoben werden und erst von den Pressarmen entlassen werden, wenn sie umhüllt und dadurch mindestens beschränkt stabilisiert sind. Dabei wird die Umhüllung um die Pressarme angelegt und die Stapel mit der Umhüllung werden dann von den Pressarmen geschoben. Offensichtlich führt eine derartige Umhüllung nur dann zu einer Stapelstabilisierung, wenn das Umhüllungsmaterial auch nach dem Herausziehen der Pressarme noch genügend eng um den Stapel anliegt. Dies bedingt, dass das Umhüllungsmaterial genügend elastisch ist und genügend gespannt werden kann und/oder dass die gestapelten Gegenstände genügend elastisch komprimierbar sind und genügend zusammengepresst werden können. Ist dies nicht der Fall, muss der Stapel vor oder nach der Umhüllung in einem separaten Schritt noch umreift werden, wobei dieselben Probleme auftreten, wie sie oben für nicht oder nicht genügend stabilisierte Stapel beschrieben sind. Publication WO-00/34127 describes a device with which the above mentioned problems caused by the instability of stacks are solved in that the stack from the stack shaft directly between two press arms be pushed and only released from the press arms when they are wrapped and are thereby stabilized at least to a limited extent. The wrapping around the Press arms are applied and the stacks with the wrapping are then removed from the press arms pushed. Obviously, such a wrapping only leads to stack stabilization if the wrapping material is still pulled out Press arms are still tight enough around the stack. This requires that the wrapping material is sufficiently elastic and can be tensioned sufficiently and / or that the stacked objects are sufficiently elastically compressible and sufficient can be pressed together. If this is not the case, the stack must be in front of or are strapped in a separate step after the wrapping, the same Problems occur as described above for stacks that are not stabilized or not sufficiently stabilized are.

Die Umhüllung wird gemäss der oben genannten Publikation realisiert dadurch, dass der von den Pressarmen gepresst gehaltene Stapel gegen einen sich über seinen Förderweg erstreckenden Vorhang eines Umhüllungsmaterials bewegt wird, welcher Vorhang bei der Weiterförderung sich um die vorlaufende Seite des Stapels und der Pressarme legt und auf der nachlaufenden Stapelseite zu einer in sich geschlossenen Umhüllung geschlossen werden kann. Das Umhüllungsmaterial wird gleichzeitig derart zertrennt, dass es für einen folgenden Stapel wiederum einen Vorhang bildetThe wrapping is realized in accordance with the above-mentioned publication in that the stack held pressed by the press arms against one another via its conveying path extending curtain of a wrapping material is moved, which curtain in the case of further conveyance around the leading side of the stack and the Press arms and on the trailing stack side to a self-contained Wrapping can be closed. The wrapping material becomes like this at the same time separated that it again forms a curtain for a subsequent stack

In der Publikation US-4870807 ist eine Vorrichtung beschrieben, mit der Stapel in einer Zuführungsrichtung in eine Umreifungsposition zugeführt und dort parallel zur Zuführungsrichtung umreift werden (Längsumreifung). Während Zuführung und Umreifung sind die Stapel zwischen zwei Pressarmpaaren gehalten.The publication US-4870807 describes a device with which stacks in one Feed direction fed into a strapping position and there parallel to Feeding direction are strapped (longitudinal strapping). During feeding and strapping the stacks are held between two pairs of press arms.

Es ist nun die Aufgabe der Erfindung, ein Verfahren und eine Vorrichtung zur Umreifung von Druckproduktestapeln zu schaffen, mit denen insbesondere relativ unstabile, gegebenenfalls bereits umhüllte Stapel einfach umreifbar sind. Verfahren und Vorrichtung sollen an die Stapel und an das Umreifungsband möglichst wenig Bedingungen stellen und sollen zudem problemlos anpassbar sein für die Umreifung von Stapeln mit unterschiedlichen Stapelhöhen.It is the object of the invention, a method and a device for strapping of printed product stacks, with which in particular relatively unstable, possibly already wrapped stacks are easily strapped. Method and device should have as few conditions on the stacks and strapping as possible and should also be easily adaptable for strapping stacks with different stack heights.

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

Die Erfindung beruht im wesentlichen darauf, die Stapel zwischen zwei Pressarmen gepresst gehalten einer Umreifungsposition zuzuführen in einer Art, wie im wesentlichen in der bereits weiter oben genannten Publikation WO-00/34127 beschrieben ist. Die Stapel werden mit einem Umreifungsband fertig umreift, während der Stapel durch die Pressarme gepresst gehalten wird. Damit die Umreifung aber nicht den gleichen, einschränkenden Bedingungen unterworfen ist wie die Umhüllung gemäss der genannten Publikation, wird die für die Umreifung notwendige Bandschlaufe zwar im Bereiche der Stapelstirnseiten um die Pressarme herum angelegt, wobei aber in den beiden Pressarmen je eine schlitzartige Öffnung vorgesehen ist, auf die die Bandschlaufe ausgerichtet wird und durch die das Umreifungsband beim Festziehen der Schlaufe gezogen wird, um auch auf den Stapelstirnseiten direkt auf den Stapel positioniert werden zu können.The invention is essentially based on the stack between two press arms pressed to be fed to a strapping position in a manner essentially is described in the publication WO-00/34127 already mentioned above. The stacks are strapped with a strapping tape while the stack is through the press arms are kept pressed. So that the strapping is not the same, is subject to restrictive conditions such as the wrapping according to the aforementioned Publication, the strap loop required for the strapping is indeed in the area the stack end faces around the press arms, but in the two Press arms each have a slot-like opening to which the belt loop is aligned and through which the strapping is pulled when tightening the loop is also to be positioned directly on the stack on the end faces of the stack can.

Die schlitzartigen Öffnungen der beiden Pressarme sind aufeinander ausgerichtet und haben zwei geschlossenene Enden oder ein geschlossenes und ein offenes Ende. Sie sind derart ausgelegt, dass die geschlossenen Enden einen zwischen den Pressarmen gehaltenen Stapel überragen, derart, dass das Umreifungsband für das Anlegen der Bandschlaufe neben dem Stapel durch die Öffnungen vom Bereich zwischen den Pressarmen auf die Aussenseite der Pressarme und wieder zurück geführt werden kann.The slot-like openings of the two press arms are aligned and have two closed ends or one closed and one open end. she are designed so that the closed ends are between the press arms protrude the stack held so that the strapping for the application of the Band loop next to the stack through the openings from the area between the Press arms can be guided to the outside of the press arms and back again.

Für das Erstellen der Bandschlaufe sind Bandführungen (z.B. Bandkanal) vorzusehen, wie sie von bekannten Umreifungsvorrichtungen bekannt sind. Dabei ist ein Teil der Bandführungen vorteilhafterweise an den Pressarmen montiert und wird zusammen mit dem von den Pressarmen gehaltenen Stapel in die Umreifungsposition geführt, wo er stationäre Bandführungsteile ergänzt.Tape guides (e.g. tape channel) must be provided for creating the tape loop, as they are known from known strapping devices. Part of the Belt guides advantageously mounted on the press arms and is together with the stack held by the press arms in the strapping position, where it stationary belt guide parts added.

Vorteilhafterweise wird die Umreifung erst angelegt, wenn bereits ein Umhüllungsmaterial um den Stapel und die Pressarme gelegt ist, derart, dass die Umreifung ausserhalb der Umhüllung angeordnet ist. Dabei braucht die Umhüllung nur eine Schutzfunktion zu übernehmen, während die Stapelstabilisations-Funktion von der Umreifung übernommen wird. Das heisst mit anderen Worten, die Stapelumhüllung ist von den bereits weiter oben erwähnten Bedingungen betreffend Elastizität des Umhüllungsmaterials und/oder betreffend der Kompressibilität des Stapels völlig entbunden. Für die Umreifung gelten keine solchen Bedingungen, da sie nicht um die Pressarme angelegt wird.The strapping is advantageously only put on when there is already a wrapping material is placed around the stack and the press arms so that the strapping is outside the envelope is arranged. The cover only needs a protective function to take over while the stack stabilization function is taken over by the strapping becomes. In other words, the stack wrapping is already from them conditions mentioned above regarding elasticity of the wrapping material and / or completely relieved of the compressibility of the stack. For strapping no such conditions apply since it is not placed around the press arms.

Die beiden einen Stapel pressend aufnehmenden Pressarme haben beispielsweise aufeinander ausgerichtete, proximale und distale Enden, sind mit ihren proximalen Enden an einen Antrieb gekoppelt und weisen in der Art von Gabeln mindestens eine, sich gegen das distale Ende erstreckende und am distalen Ende offene, schlitzförmige Öffnung zwischen zwei Zinken auf. Die anzulegende Bandschlaufe führt an den geschlossenen Enden der schlitzförmigen Öffnungen durch die Gabeln, über den schlitzförmigen Öffnungen über die Aussenseiten der Gabeln und schliesst sich über die distalen Enden der Gabeln. Die Mittel zum Festziehen/Spannen, zum Verschliessen (z.B. Verschweissen) und zum Abtrennen des Umreifungsbandes sind beispielsweise ausserhalb der einen Gabel angeordnet, wobei sie gegebenenfalls für ihre Funktion temporär durch die schlitzförmige Öffnung der Gabel näher an den Stapel heranbewegt wird. Die genannten Mittel können aber auch in einem Bereiche zwischen den distalen Enden der Gabeln angeordnet sein.The two press arms, which receive a stack of presses, have one another, for example aligned, proximal and distal ends, are with their proximal ends coupled to a drive and have at least one in the manner of forks slit-shaped opening extending towards the distal end and open at the distal end between two prongs. The strap to be attached leads to the closed one Ends of the slit-shaped openings through the forks, over the slit-shaped Openings on the outer sides of the forks and close over the distal ones Ends of the forks. The means for tightening / tightening, for closing (e.g. welding) and for severing the strapping are, for example, outside arranged a fork, where appropriate temporarily for their function the slot-like opening of the fork is moved closer to the stack. The above Means can also be in a region between the distal ends of the Forks can be arranged.

Ein Stapel von Druckprodukten wird also zwischen zwei einander zugeordneten Gabeln eines Gabelpaares positioniert, zwischen diesen gepresst und in gepresstem Zustand für eine Umreifung in eine Umreifungsposition geführt. In einer der Umreifungsposition vorgeschalteten Umhüllungsposition oder in der Umreifüngsposition kann zudem eine Umhüllung des Stapels realisiert werden.A stack of printed products is therefore between two forks assigned to each other a pair of forks positioned, pressed between them and in the pressed state for a strapping led into a strapping position. In one of the strapping positions upstream wrapping position or in the strapping position can also be a Wrapping the stack can be realized.

Für eine mehrfache Umreifung sind Gabeln mit mehr als zwei Zinken und entsprechende, mehrfache Bandführungen vorzusehen.For multiple strapping, forks with more than two tines and corresponding, to provide multiple tape guides.

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

Figur 1
zeigt schematisch eine beispielhafte Ausführungsform der erfindungsgemässen Umreifungsvorrichtung in einer perspektivischen Ansicht;
Figur 2
zeigt einen Teil der Umreifungsvorrichtung aus Figur 1 in einer perspektivischen Ansicht;
Figur 3
zeigt die Pressarme und einen Teil der Bandführungen der Umreifungsvorrichtung gemäss Figuren 1 und 2;
Figur 4
zeigt eine weitere Ausführungsform der erfindungsgemässen Umreifungsvorrichtung mit einer Umhüllungsposition und einer Umreifungsposition;
Figur 5
zeigt einen in der Vorrichtung gemäss Figur 4 umhüllten und umreiften Stapel unmittelbar nach der Umreifung;
Figur 6
zeigt eine weitere Ausführungsform der erfindungsgemässen Umreifungsvorrichtung mit einer Umreifungsposition, die gleichzeitig Umhüllungsposition ist;
Figuren 7 und 8
zeigen im Schnitt durch die Umreifungsposition verschiedene Ausführungsformen von Bandführungsmitteln;
Figur 9
zeigt eine weitere Umreifung eines nach dem erfindungsgemässen Verfahren umreiften Stapels.
The method according to the invention and exemplary embodiments of the device according to the invention are described in more detail with reference to the following figures:
Figure 1
schematically shows an exemplary embodiment of the strapping device according to the invention in a perspective view;
Figure 2
shows a part of the strapping device of Figure 1 in a perspective view;
Figure 3
shows the press arms and part of the band guides of the strapping device according to Figures 1 and 2;
Figure 4
shows a further embodiment of the strapping device according to the invention with a wrapping position and a strapping position;
Figure 5
shows a stack wrapped and strapped in the device according to Figure 4 immediately after strapping;
Figure 6
shows a further embodiment of the strapping device according to the invention with a strapping position which is also the wrapping position;
Figures 7 and 8
show in section through the strapping position different embodiments of strap guide means;
Figure 9
shows a further strapping of a stack strapped according to the inventive method.

Figur 1 zeigt schematisch eine beispielhafte Ausführungsform der erfindungsgemässen Umreifungsvorrichtung 1 in einer perspektivischen Darstellung. Zu erkennen sind eine Zuführeinrichtung 2 auf der Stapel 3 von Druckprodukten in Richtung eines Pfeils P1 der Umreifungsvorrichtung 1 zugeführt werden. Auf der anderen Seite der Umreifungsvorrichtung 1 befindet sich eine Wegführeinrichtung 4 welche zum Wegführen von umreiften Stapeln 3 mit beispielsweise verschiedenen Stapelhöhen in Richtung eines Pfeils P2 dient. Die Umreifungsvorrichtung 1 weist einen Unterbau 10, eine Säule 11 mit beispielsweise vier Gabelpaaren (je 8.1 und 8.2) und eine Umreifungsposition 13 auf, in der ein Stapel 3 umreift wird. Die Säule 11 ist senkrecht zum Unterbau 10 um eine Achse A schrittweise drehbar angeordnet und wird von einem Antrieb bewegt, der im Unterbau 10 integriert ist. Die Gabelpaare umfassen je eine untere Gabel 8.1 und eine obere Gabel 8.2, die im Bereiche ihres proximalen Endes an der Säule angekoppelt sind. Die oberen Gabeln 8.2 sind für das Pressen der Stapel und zur Handhabung von verschieden hohen Stapeln entlang der Säule 11 individuell verschiebbar angeordnet. Die Gabelpaare und von ihnen gepresst gehaltene Stapel werden durch die Säule 11 schrittweise um die Achse A bewegt. Bei anderen Ausführungsformen können die Gabelpaare auch anders geführt, resp. verschoben werden (z.B. linear mittels Gliederketten). FIG. 1 schematically shows an exemplary embodiment of the strapping device 1 according to the invention in a perspective illustration. A feed device 2 on which stacks 3 of printed products are fed in the direction of an arrow P1 of the strapping device 1 can be seen. On the other side of the strapping device 1 there is a removal device 4 which serves to remove strapped stacks 3 with, for example, different stacking heights in the direction of an arrow P2. The strapping device 1 has a substructure 10, a column 11 with, for example, four fork pairs (8.1 and 8.2 each) and a strapping position 13 in which a stack 3 is strapped. The column 11 is arranged so that it can be rotated step by step about an axis A perpendicular to the base 10 and is moved by a drive which is integrated in the base 10. The fork pairs each comprise a lower fork 8.1 and an upper fork 8.2, which are coupled to the column in the region of their proximal end. The upper forks 8.2 are arranged to be individually displaceable along the column 11 for pressing the stacks and for handling stacks of different heights. The fork pairs and stacks pressed by them are moved by the column 11 step by step around the axis A. In other embodiments, the fork pairs can be performed differently, respectively. can be shifted (eg linearly using link chains).

Ein zu verarbeitender Stapel wird von der Zuführeinrichtung 2 zwischen zwei einander zugeordnete Gabeln 8.1, 8.2 gebracht und durch Absenken der oberen Gabel 8.2 gepresst und gehalten. Durch Rotation der Säule 11 beispielsweise um 90°, wird der gehaltene Stapel dann in die Umreifungsposition 13 gebracht.A stack to be processed is fed by the feed device 2 between two each other assigned forks 8.1, 8.2 brought and pressed by lowering the upper fork 8.2 and held. By rotating the column 11, for example by 90 °, the held one Stack then brought into the strapping position 13.

Figur 2 zeigt die Umreifungsvorrichtung 1 aus Figur 1 ohne die Zuführeinrichtung 2 und die Wegführeinrichtung 4 in einer perspektivischen Ansicht. Zu erkennen ist ein Stapel 3 von Druckprodukten, der zwischen zwei einander zugeordneten Gabeln 8.1 und 8.2 gepresst gehalten ist. Der Stapel 3 wird während der Zuführung zur Umreifungsposition 13, während der Umreifung in der Umreifungsposition und während dem Wegführen aus der Umreifungsposition durch die zwei einander zugeordneten Gabeln 8.1 und 8.2 sicher gehalten und geführt, wodurch sehr hohe Beschleunigungen möglich sind. FIG. 2 shows the strapping device 1 from FIG. 1 without the feed device 2 and the removal device 4 in a perspective view. A stack 3 of printed products can be seen, which is held pressed between two forks 8.1 and 8.2 assigned to one another. The stack 3 is securely held and guided during the feeding to the strapping position 13, during the strapping in the strapping position and while leading away from the strapping position by the two forks 8.1 and 8.2 which are assigned to one another, as a result of which very high accelerations are possible.

Das Bandführungsmittel 16, das zur Erstellung einer Bandschlaufe für die Umreifung dient, setzt sich aus verschiedenen, teils stationär in der Umreifungsposition 13 angeordneten, teils mit den Gabelpaaren bewegbaren Teilen zusammen. Unterhalb der Position der untern Gabel 8.1 und möglichst nahe an dieser Gabel ist ein stationärer, unterer Kanalteil 16.1 angeordnet, in den beispielsweise die Mittel zum Spannen, Verschliessen und Trennen (nicht dargestellt) des Umreifungsbandes integriert sind. Im Bereiche der distalen Gabelenden ist ein ebenfalls stationärer, distaler Kanalteil 16.2 angeordnet, der vom unteren Kanalteil 16.1 im wesentlichen senkrecht aufwärts gerichtet ist bis auf eine Höhe, die grösser ist als die höchste Position der oberen Gabel 8.2, und an den sich ein oberer, ebenfalls stationärer Kanalteil 16.3 anschliesst. Der obere Kanalteil 16.3 erstreckt sich über der oberen Gabel 8.2 gegen das proximale Ende des Gabelpaares und schliesst dort an einen weiteren, im wesentlichen senkrechten Kanalteil (proximaler Kanalteil 16.4) an. Dieser proximale Kanalteil 16.4 ist an der unteren Gabel 8.1 derart befestigt, dass er auf das geschlossene Ende der schlitzförmigen Öffnung ausgerichtet ist. Von da führt er durch das geschlossene Ende der schlitzförmigen Öffnung der oberen Gabel 8.2, wobei die obere Gabel 8.2 relativ zu diesem proximalen Kanalteil 16.4 auf und ab bewegbar ist. Jedes der Gabelpaare weist einen proximalen Kanalteil 16.4 auf.The strap guide means 16, which is used to create a strap loop for the strapping serves, is composed of different, partly stationary arranged in the strapping position 13, partly movable parts together with the fork pairs. Below the position the lower fork 8.1 and as close as possible to this fork is a stationary, lower one Channel part 16.1 arranged in which, for example, the means for tensioning, closing and separating (not shown) the strapping are integrated. In the area of distal fork ends is also a stationary, distal channel part 16.2 arranged is directed essentially vertically upwards from the lower channel part 16.1 except for one Height, which is greater than the highest position of the upper fork 8.2, and at which one connects upper, also stationary duct part 16.3. The upper channel part 16.3 extends over the upper fork 8.2 against the proximal end of the fork pair and connects to another, essentially vertical canal part (more proximal Channel part 16.4). This proximal channel part 16.4 is such on the lower fork 8.1 attached that it is aligned with the closed end of the slit-shaped opening is. From there it leads through the closed end of the slit-shaped opening of the upper one Fork 8.2, the upper fork 8.2 relative to this proximal channel part 16.4 is movable up and down. Each of the fork pairs has a proximal channel part 16.4 on.

Der Bandkanal ist in einer dem Fachmann bekannten Weise ausgerüstet, derart, dass er das Umreifungsband zur Erstellung der Bandschlaufe führen kann und dass das Band beim Festziehen im wesentlichen über die ganze Kanallänge aus dem Kanal gezogen und auf dem Stapel positioniert werden kann. Wie noch zu zeigen sein wird, können Teile des Bandkanals, insbesondere der proximale Kanalteil 16.4 auch fehlen und kann das Band über Schlaufenbereiche ohne Führungskanal durch andere Mittel geführt werden. Das Umreifungsband kann beispielsweise zur Selbst-Führung mittels Profilrollen in seinem Querschnitt gebogen oder anders profiliert und dadurch versteift werden oder es kann durch in Bandrichtung ausgerichtete Luftstrahlen geführt werden.The band channel is equipped in a manner known to the person skilled in the art such that it the strapping can lead to the creation of the strap loop and that the strap pulled out of the channel over the entire length of the channel when tightening and can be positioned on the stack. As will be shown, can Parts of the band channel, in particular the proximal channel part 16.4, are also missing and can be the belt can be guided through loop areas without a guide channel by other means. The strapping can, for example, for self-guidance by means of profile rollers bent in its cross section or profiled otherwise and thereby stiffened or it can be guided by air jets aligned in the direction of the belt.

Figur 3 zeigt eine Detailansicht D aus Figur 2. Zu erkennen sind zwei einander zugeordnete Gabeln 8.1, 8.2, von denen die obere in einer Linearführung 20 an der Säule 11 auf und ab verschiebbar gelagert ist. Der proximale Kanalteil 16.4 ist mit der unteren Gabel 8.1 fest verbunden, wobei seine Öffnung auf eine schlitzförmige Öffnung 19.1 zwischen zwei Zinken 18 der Gabel 8.1 ausgerichtet ist, insbesondere auf das geschlossene Ende dieser Öffnung 19.1. Der proximale Kanalteil 16.4 setzt sich gegebenenfalls unterhalb der unteren Gabel fort, um an den unteren Kanalteil 16.1 anzuschliessen. Der proximale Kanalteil 16.4 ragt von der unteren Gabel aufwärts durch eine auf die schlitzförmige Öffnung 19.1 ausgerichtete, schlitzförmige Öffnung 19.2 zwischen zwei Zinken der oberen Gabel 8.2 hindurch bis über die obere Gabel (in ihrer höchsten Position), derart, dass er an den oberen Kanalteil 16.3 (Figur 2) anschliessen kann. Die obere Gabel 8.2 ist relativ zum proximalern Kanalteil 16.4 frei auf und ab verschiebbar. FIG. 3 shows a detailed view D from FIG. 2. Two forks 8.1, 8.2, which are assigned to one another, can be seen, the upper of which is mounted in a linear guide 20 on the column 11 and can be moved up and down. The proximal channel part 16.4 is firmly connected to the lower fork 8.1, its opening being aligned with a slot-shaped opening 19.1 between two prongs 18 of the fork 8.1, in particular with the closed end of this opening 19.1. The proximal canal part 16.4 may continue below the lower fork in order to connect to the lower canal part 16.1. The proximal canal part 16.4 projects upward from the lower fork through a slit-shaped opening 19.2 aligned with the slit-shaped opening 19.1 between two prongs of the upper fork 8.2 and over the upper fork (in its highest position), in such a way that it contacts the upper canal part 16.3 (Figure 2) can connect. The upper fork 8.2 can be freely moved up and down relative to the proximal channel part 16.4.

Figur 4 zeigt schematisch und beispielhaft eine weitere Umreifungsvorrichtung 1 in einer perspektivischen Ansicht. Die Umreifungsvorrichtung 1 entspricht im Wesentlichen der in Figur 1 gezeigten Anlage weshalb die einzelnen Elemente, die im Zusammenhang mit Figur 1 bereits beschrieben worden sind, mit gleichen Bezugsziffern bezeichnet sind und nicht mehr beschrieben werden. Die dargestellte Umreifungsvorrichtung 1 ist auch als Umhüllungsvorrichtung ausgerüstet, dadurch, dass sie in Bewegungsrichtung der Stapel 3 vor der Umreifungsposition 13 eine Umhüllungsposition 22 aufweist. In der Umhüllungsposition 22 sind beispielsweise die folgenden, an sich bekannten, der Umhüllung dienenden Mittel vorgesehen: ein Rollenhalter 23 für zwei Rollen 24.1, 24.2 eines Umhüllungsmaterials 25 (bspw. aus Polyethylenfolie) und Mittel (26.1 und 26.2) zum Verschliessen und Trennen des Umhüllungsmaterials 25 auf der nachlaufenden Stapelseite. Das Umhüllungsmaterial 25 bildet zwischen den beiden Rollen 24.1 und 24.2 einen sich über den Bewegungsweg der von den Gabelpaaren gehaltenen Stapel 3 erstreckenden Vorhang, der von einem vorbeigeförderten Stapel 3 mitgenommen wird, sich um Stapel 3 und Gabeln 8.1 und 8.2 legt und hinter dem Stapel zu einer Umhüllung geschlossen und von den Rollen abgetrennt wird, derart, dass er für den nächsten Stapel sich wieder vorhangartig über den Bewegungsweg erstreckt. Figure 4 shows schematically and by way of example another strapping device 1 in a perspective view. The strapping device 1 essentially corresponds to the system shown in FIG. 1, which is why the individual elements which have already been described in connection with FIG. 1 are designated by the same reference numerals and are no longer described. The strapping device 1 shown is also equipped as a wrapping device, in that it has a wrapping position 22 in front of the strapping position 13 in the direction of movement of the stack 3. In the wrapping position 22, for example, the following, known, serving the wrapping means are provided: a roll holder 23 for two rolls 24.1, 24.2 of a wrapping material 25 (e.g. made of polyethylene film) and means (26.1 and 26.2) for closing and separating the wrapping material 25 on the trailing stack side. The wrapping material 25 forms between the two rollers 24.1 and 24.2 a curtain extending over the path of movement of the stacks 3 held by the fork pairs, which is carried along by a conveyed stack 3, wraps around stack 3 and forks 8.1 and 8.2 and closes behind the stack an envelope is closed and separated from the rolls, such that it extends again for the next stack in a curtain-like manner over the movement path.

Nachdem ein Stapel 3 in der Umhüllungsposition mit dem Umhüllungsmaterial 25 umhüllt worden ist, wird er, immer noch zischen den Gabeln gepresst gehalten, in die Umreifungsposition 13 geführt, wo er, wie oben beschrieben, mit einem Umreifungsband 27 umreift wird. Der umhüllte und umreifte Stapel 3 wird immer noch zwischen zwei einander zugeordneten Gabeln 8.1, 8.2 gepresst gehalten, und wird so der Wegführeinrichtung 4 zugeführt.After a stack 3 is wrapped in the wrapping position with the wrapping material 25 has been held, still pressed between the forks, in the strapping position 13 out where, as described above, with a strapping 27 is strapped. The wrapped and strapped stack 3 is still between two forks 8.1, 8.2 assigned to one another are kept pressed, and thus become the removal device 4 fed.

In der Umreifüngsposition 13 sind die bereits im Zusammenhang mit den Figuren 2 und 3 beschriebenen Mittel zur Erstellung einer Bandumreifung, insbesondere Teile der Bandführung 16, Mittel (nicht dargestellt) zum Zuführen des Umreifüngsbandes 27 ab einer Bandrolle und Mittel (nicht dargestellt) zum Spannen, Verschliessen und Trennen des Umreifungsbandes 27 angeordnet. Der in der Umreifungsposition 13 stationär angeordnete Teil der Bandführung 16 wird für jede Umreifung durch einen mit dem entsprechenden Gabelpaar zugeführten, proximalen Kanalteil 16.4 zu einer schlaufenförmigen Führung ergänzt. Sobald ein Gabelpaar mit dem proximalen Kanalteil 16.4 entsprechend positioniert ist, wird das Umreifungsband 27 in den Kanal eingeführt, so dass es eine Schlaufe um einen Stapel bildet. Für das Einführen des Bandes sind zusätzlich zur Vorratsrolle beispielsweise ein Bandspeicher und eine Bandvorschubeinrichtung vorzusehen, welche beispielsweise im Unterbau 10 eingebaut sind.In the strapping position 13 they are already in connection with FIGS 3 described means for creating a strap, in particular parts of the Tape guide 16, means (not shown) for feeding the strapping tape 27 a tape roll and means (not shown) for tensioning, closing and separating of the strapping 27 is arranged. The one arranged stationary in the strapping position 13 Part of the tape guide 16 is for each strapping by one with the corresponding one Proximal channel part 16.4 fed to a pair of forks into a loop-shaped one Leadership supplemented. As soon as a pair of forks with the proximal canal part 16.4 accordingly is positioned, the strapping 27 is inserted into the channel so that it forms a loop around a stack. For the insertion of the tape are additional for the supply roll, for example, a tape storage device and a tape feed device to be provided, which are installed in the substructure 10, for example.

Figur 5 zeigt vergrössert einen Ausschnitt A aus Figur 4. Zu erkennen ist ein zwischen zwei einander zugeordneten Gabeln 8.1 und 8.2 gepresst gehaltener Stapel 3, der mit einem Umreifungsband 27 umreift und davor mit einem Umhüllungsmaterial 25 umhüllt worden ist. Wie zu erkennen ist, liegt das Umreifungsband 27 in schlitzförmigen Öffnungen zwischen Zinken 18 der Gabeln 8.1 und 8.2 eng am Stapel 3 an, während das Umhüllungsmaterial die Gabeln mit umhüllt. Für eine Entfernung des umhüllten und umreiften Stapels 3 von den Gabeln 8.1 und 8.2 werden beispielsweise Bolzen zwischen die proximalen Enden der Zinken 18 eingeführt, derart, dass sie beide Gabeln überragen, und dann gegen das proximale Ende der Zinken bewegt, wobei sie den umhüllten und umreiften Stapel von den Gabeln schieben. FIG. 5 shows an enlarged detail A from FIG. 4. A stack 3 can be seen pressed between two forks 8.1 and 8.2 that are assigned to one another, which is strapped with a strapping band 27 and has previously been wrapped with a wrapping material 25. As can be seen, the strapping band 27 lies in slot-like openings between the prongs 18 of the forks 8.1 and 8.2 closely against the stack 3, while the wrapping material also coats the forks. For removal of the wrapped and strapped stack 3 from the forks 8.1 and 8.2, for example, bolts are inserted between the proximal ends of the prongs 18 such that they protrude from both forks and then moved against the proximal end of the prongs, whereby the wrapped and Push the strapped stack off the forks.

Figur 6 zeigt eine weitere bevorzugte Ausführungsform der erfindungsgemässen Umreifungsvorrichtung 1 in einer perspektivischen Ansicht. Die Umreifungsvorrichtung 1 entspricht im Wesentlichen der in Figur 4 gezeigten Vorrichtung, weshalb die schon beschriebenen Elemente nicht mehr beschrieben werden. In dieser Ausführungsform sind Umhüllungsposition 22 und Umreifungsposition 13 identisch, derart, dass ein Stapel 3 im Wesentlichen gleichzeitig umhüllt und umreift werden kann. Gleichzeitig mit der Umhüllung/Umreifung eines Stapels, wird ein zu umreifender Stapel 3 in einer Ladeposition im Bereich der Zuführeinrichtung 2 durch ein Gabelpaar 8.1, 8.2 erfasst und ein umhüllter und umreifter Stapel 3 in einer Entlassungsposition im Bereich der Wegführeinrichtung 4 von einem Gabelpaar geschoben und weggeführt. FIG. 6 shows a further preferred embodiment of the strapping device 1 according to the invention in a perspective view. The strapping device 1 essentially corresponds to the device shown in FIG. 4, which is why the elements already described are no longer described. In this embodiment, wrapping position 22 and strapping position 13 are identical, such that a stack 3 can be wrapped and strapped essentially simultaneously. Simultaneously with the wrapping / strapping of a stack, a stack 3 to be strapped in a loading position in the area of the feed device 2 is gripped by a pair of forks 8.1, 8.2 and a wrapped and strapped stack 3 in a release position in the area of the removal device 4 is pushed by a pair of forks and led away.

Figuren 7 und 8 zeigen beispielhafte Ausführungsformen der Bandführung 16, die zur Erstellung der Bandschlaufe in der Umreifungsposition 13 der erfindungsgemässen Umreifungsvorrichtung vorzusehen ist. Die Figuren sind Schnitte entlang der schlitzförmigen Öffnungen 19.1 und 19.2 eines Gabelpaars (8.1, 8.2), das einen Stapel 3 gepresst hält. Die Figuren zeigen in der Bandführung 16 auch die Bandschlaufe des Umreifungsbands 27 (als strichpunktierte Linie), eine Vorratsrolle 28, von der das Umreifungsband abgezogen wird, sowie schematisch als Kasten 29 zusammengefasst die Mittel zur Zuführung des Umreifungsbandes 27 zur Bandführung 16 und die Mittel zum Festziehen/Spannen, Verschliessen und Abtrennen des Umreifungsbandes 27. FIGS. 7 and 8 show exemplary embodiments of the strap guide 16, which is to be provided for creating the strap loop in the strapping position 13 of the strapping device according to the invention. The figures are sections along the slit-shaped openings 19.1 and 19.2 of a fork pair (8.1, 8.2) which holds a stack 3 pressed. The figures in the strap guide 16 also show the strap loop of the strapping 27 (as a dash-dotted line), a supply roll 28 from which the strapping is pulled, and schematically summarized as a box 29, the means for feeding the strapping 27 to the strap guide 16 and the means for Tightening / tensioning, closing and severing the strapping 27.

Die Ausführungsform gemäss Figur 7 ist im wesentlichen dieselbe wie in den Figuren 1 bis 6 dargestellt, mit einem die Bandschlaufe vollständig vorgebenden Bandkanal bestehend aus einem stationären unteren, distalen und oberen Kanalteil (16.1, 16.2 und 16.3) und mit einem mit dem Gabelpaar 8.1 und 8.2 in die Umreifungsposition bewegten, proximalen Kanalteil 16.4, der sich durch die geschlossenen Enden der schlitzförmigen Öffnungen 19.1 und 19.2 in den Gabeln 8.1 und 8.2 fortsetzt. In einer Vorrichtung, in der die Stapel 3 nur umreift und nicht umhüllt werden, kann auch der obere Kanalteil 16.3 mit den Gabeln 8.1 und 8.2 mitbewegt werden, sodass die Grenze zwischen stationärem Kanalteil und bewegtem Kanalteil an der mit 17 bezeichneten Stelle liegt. Für diesen Fall kann der obere Kanalteil auch im oberen Pressarm 8.2 integriert sein. The embodiment according to FIG. 7 is essentially the same as in the figures 1 to 6, with a band channel completely defining the band loop consisting of a stationary lower, distal and upper channel part (16.1, 16.2 and 16.3) and with one with the fork pair 8.1 and 8.2 in the strapping position moved proximal canal part 16.4, which extends through the closed ends the slot-shaped openings 19.1 and 19.2 in the forks 8.1 and 8.2 continues. In a device in which the stack 3 can only be strapped and not encased also the upper channel part 16.3 are moved with the forks 8.1 and 8.2, so that the boundary between the stationary duct part and the moving duct part at the 17 designated place. In this case, the upper part of the channel can also be in the upper part Press arm 8.2 can be integrated.

Figur 8 zeigt eine Ausführungsform von Bandführungen 16, in denen nur über und unter den Gabeln 8.1 und 8.2 ein Kanalteil (unterer und oberer Kanalteil 16.1 und 16.3) vorgesehen ist, während der distale und proximale Kanalteil fehlt. Für eine problemlose Erstellung einer Bandschlaufe sind für die Bereiche ohne Bandkanal andere Führungsmittel vorzusehen. Dies sind mindestens Auffangtrichter 18 an den das Bandende auffangenden Enden der vorhandenen Kanalteile und/oder Düsen zur Erzeugung von Luftstrahlen, die das Umreifungsband über die kanallosen Bereiche führen. Wie bereits weiter oben erwähnt, kann das Umreifungsband auch durch eine entsprechende Profilierung versteift werden, um problemlos über die führungslosen Bereiche bewegt werden zu können.Figure 8 shows an embodiment of tape guides 16, in which only over and under the forks 8.1 and 8.2 a channel part (lower and upper channel part 16.1 and 16.3) is provided while the distal and proximal canal part is missing. For one problem-free creation of a tape loop are for the areas without tape channel to provide other management means. These are at least collecting funnels 18 to the the ends of the existing duct parts and / or nozzles to catch the band end Generation of air jets that sweep the strapping across the channelless areas to lead. As already mentioned above, the strapping can also be done by a Appropriate profiling can be stiffened in order to be easily guided via the guide Areas to be moved.

Die Ausführungsform gemäss Figur 8 bringt den Vorteil, dass in der Umreifungsposition sowohl die distale als auch die proximale Stapelseite zugänglich bleiben, beispielsweise für Mittel, mit denen über die Stapelseiten vorstehende Teile der Umhüllung über diese Seiten gezogen und um den Stapel verschlossen werden können.The embodiment according to FIG. 8 has the advantage that in the strapping position both the distal and the proximal side of the stack remain accessible, for example for means with which parts of the wrapping protruding from the stack sides can be pulled over these sides and closed around the stack.

In allen Figuren 1 bis 8 erfassen die beiden Pressarme bzw. Pressgabeln 8.1 und 8.2 den Stapel von unten und oben und wird der obere Pressarm für die Pressung eines Stapels und dessen Abgabe und Aufnahme gegen den unteren Pressarm und von diesem weg (auf und ab) bewegt, während der untere Pressarm eine nicht variierende Höhe aufweist. All dies stellt keine Bedingung für die Erfindung dar. Die Pressarme pressen den Stapel zwar immer von seinen Stirnseiten aus, diese können aber irgend eine Lage im Raum haben. Die Pressarme sind relativ zueinander beweglich. Dabei ist es vorteilhaft, den einen der Pressarme in der Umreifungsposition immer gleich zu positionieren und insbesondere die Mittel zum Festziehen/Spannen, Verschliessen und Trennen des Umreifungsbandes auf der Aussenseite des so positionierten Pressarmes anzuordnen, wie dies in den Figuren 7 und 8 der Fall ist. In all of Figures 1 to 8, the two press arms or press forks 8.1 and 8.2 the stack from below and above and becomes the upper press arm for pressing one Stack and its delivery and reception against and from the lower press arm moves away (up and down) while the lower press arm does not vary Height. All this is not a condition for the invention. The press arms always press the stack from its end faces, but these can have a position in space. The press arms are movable relative to one another. there it is advantageous to always close the one of the press arms in the strapping position position and especially the means for tightening / tightening, closing and severing the strapping on the outside of the thus positioned Arrange press arm, as is the case in Figures 7 and 8.

Figur 9 zeigt, wie das erfindungsgemässe Verfahren vorteilhaft zur Erstellung einer Kreuzumreifung um einen zwischen Pressarmen gehaltenen Stapel, der gegebenenfalls auch umhüllt ist, ergänzt werden kann. Der Stapel 3, wie er oben in der Figur 9 dargestellt ist, ist wie bereits beschrieben von Pressarmen 8.1 und 8.2 gepresst gehalten, mit einem Umhüllungsmaterial 25 umhüllt und mit einem Umreifungsband 27 umreift, wobei die Umhüllung die Pressarme mit einschliesst und die Umreifung über der Umhüllung angeordnet ist, quer zur Umhüllung gerichtet ist und in schlitzförmigen Öffnungen 19.1 und 19.2 der Pressarme 8.1 und 8.2 verläuft. Dieser Stapel mit Umhüllung und Umreifung wird nun mittels Bolzen 40, die in geschlossenen Enden von weiteren schlitzförmigen Öffnungen 19' eingeführt und gegen das distale Ende der Pressarme verschoben werden, von den Pressarmen geschoben. Dabei wird der Stapel vorerst nur etwa halbwegs von den Pressarmen geschoben und damit in einer weiteren Umreifungsposition positioniert. In dieser Position wird er in an sich bekannter Weise quer zur Ausstossrichtung mit einem weiteren Umreifungsband 27' umreift. Wenn die Umreifung 27' erstellt ist, werden die Ausstossbolzen 40 weiter bewegt und der Stapel 3 wird vollständig von den Pressarmen geschoben.FIG. 9 shows how the method according to the invention is advantageous for creating a Cross strapping around a stack held between press arms, if necessary is also encased, can be added. The stack 3, as shown above in FIG. 9 is, as already described, held pressed by press arms 8.1 and 8.2, wrapped with a wrapping material 25 and with a strapping 27 straps, the wrapping including the press arms and the strapping is arranged above the envelope, is directed transversely to the envelope and in slot-shaped Openings 19.1 and 19.2 of the press arms 8.1 and 8.2 run. That stack with wrapping and strapping is now closed by means of bolts 40 Inserted ends of further slot-shaped openings 19 'and against the distal End of the press arms are moved, pushed by the press arms. Doing so the stack is only pushed halfway from the press arms and thus in positioned another strapping position. In this position he becomes in itself known manner transversely to the direction of ejection with another strapping 27 ' strapped. When the strapping 27 'has been established, the ejection bolts 40 become wider moved and the stack 3 is pushed completely from the press arms.

In einer Umreifungsposition ohne distalen Bandkanalteil, wie sie in der Figur 8 dargestellt ist, kann die zweite Umreifung bei gleichbleibender Position des Gabelpaares erstellt werden. Vorteilhafterweise aber wird sie in einer weiteren, auf die Umreifungsposition folgenden Ausstossposition erstellt.In a strapping position without a distal band channel part, as shown in FIG. 8 the second strapping can be done with the fork pair in the same position to be created. Advantageously, however, it is in another, on the strapping position created the following discharge position.

Es ist auch vorstellbar, die im Zusammenhang mit den Figuren 4 bis 6 beschriebene, unter der in der Umreifungsposition 13 erstellten Umhüllung durch eine erste Umreifung zu ersetzen. Diese wird in der Umreifungsposition 13 oder einer vorgeschalteten, weiteren Umreifungsposition erstellt, wobei die Umreifungsrichtung im wesentlichen quer zur Verbindung zwischen distalem und proximalem Ende der Pressarme verläuft. Die Bandführung für eine derartige Umreifung weist vorteilhafterweise auf der Aussenseite des unteren Pressarmes eine auf eine entsprechende Öffnung im Pressarm ausgerichteten, stationären Kanalteil auf und einen im oberen Pressarm integrierten Kanalteil auf.It is also conceivable to use the one described in connection with FIGS. under the covering created in the strapping position 13 by a first strapping to replace. This is in the strapping position 13 or an upstream, created another strapping position, the strapping direction essentially transverse to the connection between the distal and proximal end of the press arms runs. The strap guide for such strapping advantageously has the outside of the lower press arm on a corresponding opening in the Press arm aligned, stationary duct part and one in the upper press arm integrated duct part.

Claims (19)

  1. Method for the sequential strapping of printed product stacks (3) having two opposite stack faces, in particular of such stacks having different stack heights, wherein the stacks (3) are supplied to a strapping position (13) one after the other in a supply direction, are strapped in the strapping position (13) and are then conveyed away from the strapping position (13), wherein each stack (3), at least for being supplied and strapped, is held pressed between two presser arms (8.1 and 8.2), each comprising at least one slot-shaped aperture (19.1, 19.2) and the strapping tape (27), in the region of the stack faces, is positioned on the stack (3) in the slot-shaped apertures (19.1, 19.2) and is then tightened and closed, characterised in that the presser arms (8.1, 8.2) are coupled to a drive with mutually aligned proximal ends, such that a connection between the distal presser arm ends and the proximal presser arm ends and the slot-shaped apertures (19.1, 19.2) are orientated transversally to the supply direction, and that in the strapping position (13) the strapping tape (27) is positioned around the stack (3) in a loop transversally to the supply direction and when being tightened is pulled through the slot shaped apertures (19.1, 19.2), in order to be positioned on the stack (3).
  2. Method in accordance with claim 1, characterised in that during supply of a stack (3) to the strapping position (13) at least a part of tape guides (16) for preparing the loop of the strapping tape (27) is moved into the strapping position (13) together with the stack (3) and the presser arms (8.1 and 8.2).
  3. Method in accordance with claim 1 or 2, characterised in that the distal ends of the presser arms (8.1 and 8.2.) are designed in the form of forks with at least two prongs (18) each and at least one slot-shaped aperture (19.1, 19.2) between two prongs (18).
  4. Method in accordance with claim 3, characterised in that the stacks (3) are additionally also strapped transverse to the strapping mentioned.
  5. Method in accordance with one of claims 1 to 3, characterised in that the stack (3), in addition to the strapping, is enveloped with an enveloping material (25), wherein, prior to strapping, the enveloping material (25) is applied around the presser arms (8.1 and 8.2.) and the stack (3) in a direction transverse to the loop of the strapping tape (27) and in such a manner, that the strapping is positioned outside the enveloping material (25), that the enveloping material (25) is closed around the stack (3) and the presser arms (8.1 and 8.2.) and that thereupon the enveloped and strapped stack (3) is removed from the presser arms (8.1 and 8.2.) by means of a movement relative to the presser arms (8.1 and 8.2.).
  6. Method in accordance with one of claims 1 to 3, characterised in that, for the application of the enveloping material (25), the presser arms (8.1 and 8.2.) together with the stack (3) are moved through a curtain of the enveloping material (25).
  7. Method in accordance with claim 6, characterised in that, during the strapping, the enveloping material (25) is closed around the presser arms (8.1 and 8.2.) and the stack (3).
  8. Method in accordance with one of the claims 5 to 7, characterised in that the enveloped and strapped stack (3) is separated from the presser arms (8.1 and 8.2.) by means of a relative movement between the presser arms (8.1 and 8.2.) and the stack (3) in the direction of the connection between the proximal and distal ends of the presser arms.
  9. Method in accordance with claim 8, characterised in that the enveloped and strapped stack (3) is halfway separated from the presser arms (8.1 and 8.2.), then is additionally strapped transverse to the direction of the relative movement and thereupon is completely separated from the presser arms (8.1 and 8.2.).
  10. Device for the sequential strapping of printed product stacks (3) with two opposite stack face, which device comprises a strapping position (13) with means (29) for supplying a strapping tape (27) and for tensioning, closing and cutting the strapping tape (27), as well as means for supplying the stacks (3) to the strapping position (13) in a supply direction, and pairs of presser arms (8.1 and 8.2.) movable towards one another and comprising at least one slot-shaped aperture (19.1, 19.2) each, with which presser arms the stacks (3) are pressable between the stack faces, characterised in that mutually aligned proximal ends of the presser arms (8.1, 8.2) of each pair are coupled to a drive, such that a connection between the distal presser arm ends and the proximal presser arm ends and the slot-shaped apertures (19.1, 19.2) are orientated transversally to the supply direction and that in the strapping position a tape guide (16) is provided for establishing a tape loop around a stack (3) in the strapping position (13), which tape guide (16) is orientated transversally to the supply direction and in the region of the stack faces is arranged outside of the presser arms (8.1 and 8.2.) of a pair of presser arms positioned in the strapping position (13) and aligned to the slot-shaped apertures (19.1, 19.2) of the presser arms (8.1 and 8.2.).
  11. Device in accordance with claim 10, characterised in that at least a part of the tape guide (16) are tape channels.
  12. Device in accordance with claim 11, characterised in that the tape guide (16) in addition to the tape channel parts (16.1, 16.3) comprises means for shaping the cross-section of the strapping tape (27) or means for generating air jets, which guide the strapping tape (27).
  13. Device in accordance with claim 11, characterised in that at least one tape channel part (16.4) is connected with the presser arms (8.1 and 8.2.) and is positioned in the strapping position (13) with the presser arms (8.1 and 8.2.).
  14. Device in accordance with one of the claims 10 to 13, characterised in that the distal ends of the presser arms (8.1, 8.2) are designed in the shape of forks with at least two prongs (18) and at least one slot-shaped aperture (19.1, 19.2) between two prongs (18).
  15. Device in accordance with claim 14, characterised in that the presser arms (8.1 and 8.2.) further comprise additional apertures running transverse to the slot-shaped apertures (19.1, 19.2) or tape channel parts integrated in the presser arms.
  16. Device in accordance with claim 14, characterised in that in addition it comprises means for enveloping/wrapping stacks (3) with an enveloping material (25).
  17. Device in accordance with claim 16, characterised in that the means for enveloping/wrapping are arranged in an enveloping/wrapping position (22) upstream of the strapping position (13) or in the strapping position (13).
  18. Device in accordance with claim 16 or 17, characterised in that the means for enveloping/wrapping comprise means for establishing a curtain (25) of the enveloping material (25) extending across the supply path to the strapping position (13) of the presser arms (8.1 and 8.2) and stack (3).
  19. Device in accordance with one of claims 14 to 18, characterised in that it further comprises means for additional strapping (27') of the stacks (3), wherein in the area of the means for further strapping the distal ends of the presser arms (8.1 and 8.2.) are positionable in such a manner, that a stack (3) held pressed by the presser arms (8.1 and 8.2.) is capable of being pushed half-way beyond the distal end of the presser arms (8.1 and 8.2.) to be strapped transverse to the pushing direction.
EP01810800A 2000-08-30 2001-08-20 Method and device for tying stacks of printing products Expired - Lifetime EP1184283B1 (en)

Applications Claiming Priority (2)

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CH16872000 2000-08-30
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EP (1) EP1184283B1 (en)
AT (1) ATE280086T1 (en)
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DE19722066A1 (en) * 1997-05-27 1998-12-03 Smb Schwede Maschinenbau Gmbh Strapping machine for strapping objects with an object height-dependent tensioning device
PL348061A1 (en) 1998-12-07 2002-05-06 Ferag Ag Method and device for applying a protective coating to stacks of printed products

Also Published As

Publication number Publication date
DK1184283T3 (en) 2005-01-24
DE50104188D1 (en) 2004-11-25
US20020073651A1 (en) 2002-06-20
ATE280086T1 (en) 2004-11-15
CA2356518A1 (en) 2002-02-28
US6619014B2 (en) 2003-09-16
EP1184283A1 (en) 2002-03-06

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