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EP1254855B1 - Device for disassambling a pile of flat and flexible objects - Google Patents

Device for disassambling a pile of flat and flexible objects Download PDF

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Publication number
EP1254855B1
EP1254855B1 EP02005716A EP02005716A EP1254855B1 EP 1254855 B1 EP1254855 B1 EP 1254855B1 EP 02005716 A EP02005716 A EP 02005716A EP 02005716 A EP02005716 A EP 02005716A EP 1254855 B1 EP1254855 B1 EP 1254855B1
Authority
EP
European Patent Office
Prior art keywords
stack
circulatory
bearing elements
rest
circulatory path
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
Application number
EP02005716A
Other languages
German (de)
French (fr)
Other versions
EP1254855A2 (en
EP1254855A3 (en
Inventor
Erwin Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ferag AG
Original Assignee
Ferag AG
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Filing date
Publication date
Application filed by Ferag AG filed Critical Ferag AG
Publication of EP1254855A2 publication Critical patent/EP1254855A2/en
Publication of EP1254855A3 publication Critical patent/EP1254855A3/en
Application granted granted Critical
Publication of EP1254855B1 publication Critical patent/EP1254855B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/32—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/423—Depiling; Separating articles from a pile
    • B65H2301/4232—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles
    • B65H2301/42322—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles from bottom of the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/423—Depiling; Separating articles from a pile
    • B65H2301/4233—Depiling; Separating articles from a pile by peeling, i.e. involving elongated elements traversing pile

Definitions

  • the invention relates to a device for dismantling a stack of flat, flexible articles according to the preamble of claim 1.
  • a generic mining device is known from CH 598 106. It comprises a support device of mutually spaced, along a closed orbit moving, about its longitudinal axis freely rotatable rollers.
  • the rollers form in a part of the support device a support in the manner of a roller carpet, on which a stack of flat objects rests.
  • the rollers are moved under the stack, the stack always rests on several of the rollers.
  • a clocked driven suction member engages through the spaces between two rollers from below to the stack and each lifts one corner of the currently lowest product from the rest of the stack. In the space between the lifted corner and the rest of the stack at least travels in the direction of rotation of these two rolls of continuously moving roll or roll carpet into and peels off the lowest product from the rest of the stack.
  • the stack is fixed laterally by support elements.
  • the withdrawn product comes to rest on a belt conveyor arranged below the stack support.
  • the deposited products form a scale formation, which is continuously transported away.
  • the problem with the known device is that the occupied by the rollers Space is a cylinder jacket with a fixed cross-sectional area and a certain width, which is at least the length of the rollers. This space area is thus blocked by the roll carpet or the support device.
  • the belt conveyor must therefore be arranged obliquely to the orbit of the rollers and lead the degraded objects laterally out of the region of the support device.
  • the overall arrangement consisting of the support device and the belt conveyor therefore has a considerable lateral extent, which far exceeds the stack width. A compact realization of the mining device is not possible.
  • the stack on the stack support must be oriented obliquely to the rollers. This is an object just before storage on the belt conveyor held only at one corner. When depositing the article, therefore, twisting and thus undesired mechanical loading of the object as well as non-uniform scale formation can occur, especially at high rates of degradation.
  • the invention has the object of providing a device for reducing a stack of flat, flexible objects of the type mentioned in such a way that the lateral extent of the device is minimized. Furthermore, the objects should be reliably transferred to the belt conveyor even at high speeds in a defined orientation.
  • the product stack is supported by a plurality of support elements from below, which slide under the stack.
  • the support elements are part of a support device. They are preferably attached on one side to a conveying member, which is moved along a closed orbit.
  • the support elements preferably extend horizontally and parallel to one another. Particularly preferably, their axes lie in a common horizontal plane or a slightly curved surface, which represents the stack support.
  • the support elements about its longitudinal axis freely rotatable rollers, which roll friction against the objects to be dismantled.
  • the support elements are designed and driven, for example, as described in CH 598 106.
  • the support elements are pivotable or displaceable such that their position or orientation relative to the orbit is variable.
  • the orbital plane is the plane in which the orbit is located. If the orbit is a space curve that is not in a plane, the orbital plane is the plane through which the space curve can be locally approximated.
  • the area swept by the rollers space is according to the invention shaped so that the removal device save space can be performed from the field of support device.
  • the rollers are pivoted or displaced, thus clearing the way for the belt conveyor.
  • the belt conveyor can be arranged directly below the stack support. The inventive device can thus be constructed very compact.
  • the support elements are oriented parallel to the front or rear edge of the stack. Because of the invention is not necessary to place the stack obliquely to the support elements on the stack support. This means that a separated object is always held over its entire width until it is completely separated. It is not twisted when depositing on the belt conveyor at higher degradation speeds.
  • the support means may be formed in one or two parts.
  • a carpet is provided at one end pivotally mounted on a conveyor element support elements.
  • they can be supported at their free end in the area of the stack support by a rail.
  • the separating element engages, for example, as in CH 598 106 through the gap between two support elements on the lowest lying product. It is operated with a matched to the distance and the speed of the support elements clock.
  • the two-part design there are two roll carpets whose rolls or support elements lie in the area of the stack support in a common plane.
  • the support elements of the first and the second roll carpet are each attached to a first and second conveying member and relative to these slidable or pivotable.
  • the belt conveyor is preferably arranged between the conveying members.
  • the device comprises a support device 2, which has a multiplicity of rollers 3.
  • the rollers are attached to a wheel 12 via retaining elements 13.
  • the wheel serves as a conveying member for the rollers 3.
  • the held by the holding member 13 end (storage area) 3a of a roller is moved when moving the wheel 12 along a closed orbit Moved U, which is circular here, but can also be shaped differently.
  • the orbit U is located in a plane that is vertically oriented here.
  • the rollers 3 are pivotable relative to the wheel 12 by the holding member 13 has a fixedly connected to the wheel base 13a and a rotatably connected clamp 13b, which holds the roller 3 in the storage area 3a.
  • the axis of rotation D of the pivoting movement runs essentially in the radial or secantial direction, ie does not pass directly through the center M of the wheel 12.
  • the rollers 3 are preferably pivoted mechanically by means of a linkage control.
  • the control link not shown here interacts with the holding element 13 or the roller 3 in a suitable manner.
  • the rollers form a support 7 for the stack 1 over a section A1 of the circulating path U.
  • the rollers in this section are aligned parallel to one another, preferably horizontally or perpendicular to the circulating plane.
  • the stack support 7 is curved in accordance with the orbit U.
  • the stack 1 rests on the roller carpet formed by the rollers 3 and is held in position laterally by vertical limiting elements 6. These preferably define a shaft whose dimensions can be adapted to the format of the objects to be processed.
  • the stack 1 is dismantled from below by a separating member 5 engages the front edge 4 a of the article 4.
  • the front edge 4 a is pulled down, for example, by the separator 5 sucks the object 4 lying in the working area of the separating element at the bottom.
  • three separating elements 5, designed as suckers, are arranged on a wheel 11.
  • a roller 3 enters and peels off the object bent away from the separating element during its further movement from the stack 1.
  • the stack 1 is supported by a plurality of rollers 3 from below. It is not necessary for an article to be completely peeled off before the separator 5 accesses another article.
  • several objects are still connected to the stack in the direction of movement of the rollers downstream, while their upstream edges are already bent away from the stack and separated from one another by rollers 3.
  • rollers 3 When removing the stack, the rollers 3 are parallel to the front or rear edge of the stack 1. The objects are therefore supported at all times over its entire width of at least one roller and do not twist during the transfer to the belt conveyor. 8
  • the rollers 3 are freely rotatable about their longitudinal axis and roll on the bottom of the stack or between the underlying objects. It can further be provided in the region of the stack support 7 means for rotating the rollers 3, which attack, for example, at the conically shaped end of the rollers 3. Thereby, the friction between the rollers 3 and the objects can be further reduced.
  • Such static friction strips 20 which cause the rollers to rotate by friction as they travel along the orbit are shown in FIGS. 2 and 3.
  • the belt conveyor 8 has a conveyor belt 9, which is aligned parallel to the plane of the orbit U.
  • the rear end 8a of the belt conveyor 8 is located in close spatial proximity to the trajectory of the rollers below the Stacking pad 7.
  • the distance and the lateral suspension 10 of the conveyor belt 9 is selected so that the rollers 3 can pass the rear end 8a.
  • the drop height of a removed object ie the distance between the rear end 8a of the belt conveyor 8 and the rear end 7a of the stack support 7, is thus substantially limited by the diameter of a roller 3 downwards. It can advantageously be kept low, whereby the objects can be reliably stored directly on the conveyor belt 9.
  • Complicated intermediate conveyors are dispensable.
  • the rollers are at least where the belt conveyor 8 in the plan view of the orbital plane crosses the orbit U, pivoted and thus give way for the belt conveyor 8 free.
  • the rollers 3 are at an angle of less than 90 ° to the orbital plane. They can also lie substantially in the orbital plane.
  • the belt conveyor 8 can therefore be performed in the immediate vicinity of the wheel 12 from the area of the orbit U. It can also cross the orbit twice, e.g. right and left of the stack 1 for conveying products under the stack (not shown here).
  • the rollers 3 are pivoted in the lower region A3 of the orbit U in such a way that they lie in the plane of the orbit.
  • the support device 2 therefore has a particularly small transverse extent in this lower region A3. In principle, however, it is sufficient that the rollers are dislodged only in the area A2 in which the path conveying device 8 crosses.
  • the rollers can be moved to linear or twisted as here be, whereby a pivoting movement may be sufficient by less than 90 °.
  • FIG. 2 shows a front view of a device according to the invention with a support device 2 with a first and a second roller system 2a, 2b.
  • the arrangement is mirror symmetrical to a center plane M1.
  • the illustration according to FIG. 1 corresponds to a section along this center plane M1.
  • first rollers 3 ' On a vertical first wheel 12a, first rollers 3 'are fastened via holding elements 13 and are moved along an orbit U1.
  • second rollers 3 are fastened to a second wheel 12b with holding elements 13.
  • the rollers 3 ', 3" are arranged horizontally and in pairs coaxially.
  • the rollers 3 ', 3 form a support 7 for the stack 1. This is laterally limited by support elements 6.
  • a separating element 5 engages the stack 1 from below between a first and a second roller 3 ', 3 ", the end faces of the rollers being spaced apart from one another (distance W1) for passage of the separating member 5.
  • the product is separated by a trailing pair of rollers
  • the belt conveyor 8 is arranged between the first and the second wheel 12a or 12b of the support device 2. According to the invention, the rollers 3 ', 3 "are moved during their movement along their orbit U1 or U1 U2 pivoted from its position perpendicular to the orbital plane E1 or E2 in an orientation in the orbital plane E1 or E2 or an angle of less than 90 ° thereto.
  • This can be the Belt conveyors are led out of the area circumscribed by the orbits U1 and U2 between the circulation planes E1 and E2.
  • the width W2 between the first and second rollers 3 'and 3 "in the area in which the path conveying device 8 is led out corresponds at least to the width B of the belt conveyor.
  • the device shown with two mirror-symmetric roller arrangements has the advantage that rapid adaptation to different formats is possible, for example by increasing or decreasing the distance of the circulation planes E1 and E2 or the wheels 12a, 12b.
  • the mechanical stability of the device is thereby ensured in a simple manner.
  • Another advantage is that the separating member 5 can access the stack from below at any time and no synchronization with the movement of the rollers 3 ', 3 "is necessary.
  • FIG. 3 shows another example of a device according to the invention with a supporting device 2 with a single roller carpet.
  • the structure of the support device 2 substantially corresponds to the structure of the left or right part of the support device according to FIG. 2.
  • FIG. 1 corresponds to a side view of this device.
  • Rollers 3 are attached via holding elements 13 to a wheel 12 and pivotable relative thereto.
  • the rollers 3 form the stacking support 7.
  • the rollers are pivoted out of the way, so that the removal device 8 can run parallel to the wheel 12 or the orbital plane E.
  • a support frame 15 is provided, in which the wheel 12 is mounted.
  • the separating element 5 engages through the intermediate spaces between two rollers 3 to the bottom of the stack 1.
  • the rollers are pivoted about an axis substantially normal to the orbit U or U1, U2 extending axis. It is also possible to realize the pivoting about another axis.
  • a pivoting about an axis running tangentially to the orbit is described and illustrated, for example, in the non-prepublished international patent application PCT / CH00 / 00530.
  • mounting the rollers on the support device or on a conveying member which can also be used in the context of the present invention.
  • other support elements may be used, e.g. Moldings, pins or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Laminated Bodies (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Tents Or Canopies (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Abstract

An apparatus for reducing a stack 1 of flat, flexible articles, in particular printed products, having bearing elements 3 which are moved along a continuous circulatory path U and, in a first sub-section A1 of the circulatory path U, U1, U2, form a stack rest 7. The apparatus has at least one separating element 5 which is capable of raising off a region 4a of the lowermost article 4 located in the stack 1 such that at least one of the bearing elements 3 can move in between the lowermost article 4 and the rest of the stack 1 and can separate off the lowermost article 4 from the rest of the stack 1 as it moves further. The apparatus further comprises a belt conveyor 8 which is arranged beneath the stack rest 7 and on which the articles come to rest once they have been separated off. The bearing elements 3 can be pivoted or displaced such that it is possible to change their position relative to the circulatory path U, U1, U2, to thereby allow the belt conveyor to extend forwardly without interference with the bearing elements.

Description

Die Erfindung betrifft eine Vorrichtung zum Abbau eines Stapels flacher, biegsamer Gegenstände gemäss dem Oberbegriff von Anspruch 1.The invention relates to a device for dismantling a stack of flat, flexible articles according to the preamble of claim 1.

Eine gattungsgemässe Abbauvorrichtung ist aus der CH 598 106 bekannt. Sie umfasst eine Stützvorrichtung aus untereinander beabstandeten, entlang einer geschlossenen Umlaufbahn bewegten, um ihre Längsachse frei drehbaren Walzen. Die Walzen bilden in einem Teil der Stützvorrichtung eine Auflage nach Art eines Rollenteppichs, auf der ein Stapel flächiger Gegenstände aufliegt. Die Walzen werden unter dem Stapel hindurchbewegt, wobei der Stapel stets auf mehreren der Walzen aufliegt. Ein getaktet angetriebenes Saugorgan greift durch die Zwischenräume zwischen zwei Walzen von unten auf den Stapel zu und hebt jeweils eine Ecke des momentan zuunterst liegenden Produkts vom restlichen Stapel ab. In den Zwischenraum zwischen der abgehobenen Ecke und dem restlichen Stapel fährt zumindest die in Umlaufrichtung nachlaufende dieser zwei Walzen des kontinuierlich bewegten Walzen- bzw. Rollenteppichs hinein und schält so das zuunterst liegende Produkt vom restlichen Stapel ab. Der Stapel wird seitlich durch Stützelemente fixiert. Das abgezogene Produkt kommt auf einem unterhalb der Stapelauflage angeordneten Bandförderer zu liegen. Die abgelegten Produkte bilden eine Schuppenformation, die kontinuierlich abtransportiert wird. Problematisch bei der bekannten Vorrichtung ist, dass der von den Walzen eingenommene Raumbereich ein Zylindermantel mit fester Querschnittfläche und einer gewissen Breite ist, die mindestens die Länge der Walzen beträgt. Dieser Raumbereich wird somit durch den Walzenteppich bzw. die Stützvorrichtung blockiert. Der Bandförderer muss daher schräg zur Umlaufbahn der Walzen angeordnet sein und die abgebauten Gegenstände seitlich aus dem Bereich der Stützvorrichtung hinausführen. Die Gesamtanordnung bestehend aus der Stützvorrichtung und dem Bandförderer hat daher eine erhebliche seitliche Ausdehnung, die die Stapelbreite weit übersteigt. Eine kompakte Realisierung der Abbauvorrichtung ist nicht möglich. Wenn des weiteren auf dem Bandförderer eine Schuppenformation mit senkrecht bzw. parallel zur Wegförderrichtung laufenden Kanten der Produkte erzeugt werden soll, muss der Stapel auf der Stapelauflage schräg zu den Walzen orientiert sein. Damit ist ein Gegenstand kurz vor der Ablage auf den Bandförderer nur an einer Ecke gehalten. Beim Ablegen des Gegenstands kann es daher insbesondere bei hohen Abbaugeschwindigkeiten zu Verdrehungen und damit zu einer unerwünschten mechanischen Belastung des Gegenstands sowie zu einer ungleichmässigen Schuppenformation kommen.A generic mining device is known from CH 598 106. It comprises a support device of mutually spaced, along a closed orbit moving, about its longitudinal axis freely rotatable rollers. The rollers form in a part of the support device a support in the manner of a roller carpet, on which a stack of flat objects rests. The rollers are moved under the stack, the stack always rests on several of the rollers. A clocked driven suction member engages through the spaces between two rollers from below to the stack and each lifts one corner of the currently lowest product from the rest of the stack. In the space between the lifted corner and the rest of the stack at least travels in the direction of rotation of these two rolls of continuously moving roll or roll carpet into and peels off the lowest product from the rest of the stack. The stack is fixed laterally by support elements. The withdrawn product comes to rest on a belt conveyor arranged below the stack support. The deposited products form a scale formation, which is continuously transported away. The problem with the known device is that the occupied by the rollers Space is a cylinder jacket with a fixed cross-sectional area and a certain width, which is at least the length of the rollers. This space area is thus blocked by the roll carpet or the support device. The belt conveyor must therefore be arranged obliquely to the orbit of the rollers and lead the degraded objects laterally out of the region of the support device. The overall arrangement consisting of the support device and the belt conveyor therefore has a considerable lateral extent, which far exceeds the stack width. A compact realization of the mining device is not possible. Furthermore, if an imbricated formation with edges of the products running vertically or parallel to the removal direction is to be produced on the belt conveyor, the stack on the stack support must be oriented obliquely to the rollers. This is an object just before storage on the belt conveyor held only at one corner. When depositing the article, therefore, twisting and thus undesired mechanical loading of the object as well as non-uniform scale formation can occur, especially at high rates of degradation.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Abbau eines Stapels flacher, biegsamer Gegenstände der eingangs genannten Art derart weiterzubilden, dass die seitliche Ausdehnung der Vorrichtung minimiert wird. Des weiteren sollen die Gegenstände auch bei hohen Geschwindigkeiten in definierter Orientierung zuverlässig dem Bandförderer übergeben werden können.The invention has the object of providing a device for reducing a stack of flat, flexible objects of the type mentioned in such a way that the lateral extent of the device is minimized. Furthermore, the objects should be reliably transferred to the belt conveyor even at high speeds in a defined orientation.

Die Aufgabe wird gelöst durch eine Vorrichtung zum Abbau eines Stapels flacher, biegsamer Gegenstände mit den Merkmalen von Anspruch 1. Vorteilhafte Weiterbildungen der Vorrichtungen ergeben sich aus den abhängigen Ansprüchen, der Beschreibung und der Zeichnung.The object is achieved by a device for dismantling a stack of flat, flexible articles having the features of claim 1. Advantageous developments of the devices will become apparent from the dependent claims, the description and the drawings.

Bei der erfindungsgemässen Vorrichtung wird der Produktestapel durch mehrere Auflageelemente von unten abgestützt, die unter dem Stapel hindurch gleiten. Die Auflageelemente sind Teil einer Stützvorrichtung. Sie sind vorzugsweise einseitig an einem Förderorgan befestigt, das entlang einer geschlossenen Umlaufbahn bewegt wird. Im Bereich der Stapelauflage verlaufen die Auflageelemente vorzugsweise horizontal und parallel zueinander. Besonders bevorzugt liegen ihre Achsen in einer gemeinsamen horizontalen Ebene oder einer leicht gekrümmten Fläche, die die Stapelauflage darstellt.In the device according to the invention, the product stack is supported by a plurality of support elements from below, which slide under the stack. The support elements are part of a support device. They are preferably attached on one side to a conveying member, which is moved along a closed orbit. In the area of the stack support, the support elements preferably extend horizontally and parallel to one another. Particularly preferably, their axes lie in a common horizontal plane or a slightly curved surface, which represents the stack support.

Vorzugsweise sind die Auflageelemente um ihre Längsachse frei drehbare Walzen, die reibungsarm an den abzubauenden Gegenständen abrollen. Die Auflageelemente sind beispielsweise wie in CH 598 106 beschrieben gestaltet und angetrieben.Preferably, the support elements about its longitudinal axis freely rotatable rollers, which roll friction against the objects to be dismantled. The support elements are designed and driven, for example, as described in CH 598 106.

Erfindungsgemäss sind die Auflageelemente derart verschwenkbar oder verschiebbar, dass ihre Lage bzw. Ausrichtung relativ zur Umlaufbahn veränderlich ist. Als Umlaufbahn wird dabei die Umlaufbahn der Lagerpunkte der Auflageelemente bezeichnet, deren Lage relativ zum Förderorgan unverändert ist. Als Umlaufebene wird die Ebene bezeichnet, in der die Umlaufbahn liegt. Falls die Umlaufbahn eine nicht in einer Ebene liegende Raumkurve ist, wird mit Umlaufebene die Ebene bezeichnet, durch die sich die Raumkurve lokal annähern lässt.According to the invention, the support elements are pivotable or displaceable such that their position or orientation relative to the orbit is variable. As an orbit while the orbit of the bearing points of the support elements is called, whose position is unchanged relative to the conveying member. The orbital plane is the plane in which the orbit is located. If the orbit is a space curve that is not in a plane, the orbital plane is the plane through which the space curve can be locally approximated.

Der von den Walzen überstrichene Raumbereich ist erfindungsgemäss so geformt, dass die Wegfördereinrichtung platzsparend aus dem Bereich der Stützvorrichtung geführt sein kann. Dort, wo der Bandförderer den geringsten Abstand zur Umlaufbahn aufweist, werden die Walzen verschwenkt oder verschoben und geben so den Weg für den Bandförderer frei. Der Bandförderer kann direkt unterhalb der Stapelauflage angeordnet werden. Die erfindungsgemässe Vorrichtung kann somit sehr kompakt konstruiert werden.The area swept by the rollers space is according to the invention shaped so that the removal device save space can be performed from the field of support device. Where the belt conveyor has the shortest distance to the orbit, the rollers are pivoted or displaced, thus clearing the way for the belt conveyor. The belt conveyor can be arranged directly below the stack support. The inventive device can thus be constructed very compact.

In einer weiteren bevorzugten Ausführungsform sind die Auflageelemente parallel zur Vorder- bzw. Hinterkante des Stapels orientiert. Denn durch die Erfindung ist nicht notwendig, den Stapel schräg zu den Auflageelementen auf die Stapelauflage aufzusetzen. Dies bedeutet, dass ein abgetrennter Gegenstand stets über seine gesamte Breite gehalten wird, bis er ganz abgetrennt wird. Er wird beim Ablegen auf den Bandförderer auch nicht bei höheren Abbaugeschwindigkeiten verdreht.In a further preferred embodiment, the support elements are oriented parallel to the front or rear edge of the stack. Because of the invention is not necessary to place the stack obliquely to the support elements on the stack support. This means that a separated object is always held over its entire width until it is completely separated. It is not twisted when depositing on the belt conveyor at higher degradation speeds.

Die Stützeinrichtung kann ein- oder zweiteilig ausgebildet sein. Bei der einteiligen Fassung ist ein Teppich aus an einem Ende schwenkbar an einem Förderorgan befestigten Auflageelementen vorhanden. Um den Stapel gut abzustützen, können diese an ihrem freien Ende im Bereich der Stapelauflage durch eine Schiene abgestützt werden. Das Trennorgan greift beispielsweise wie bei der CH 598 106 durch den Zwischenraum zwischen zwei Auflageelementen auf das zuunterst liegende Produkt zu. Es wird mit einem an den Abstand und die Geschwindigkeit der Auflageelemente angepassten Takt betrieben.The support means may be formed in one or two parts. In the one-piece frame, a carpet is provided at one end pivotally mounted on a conveyor element support elements. In order to support the stack well, they can be supported at their free end in the area of the stack support by a rail. The separating element engages, for example, as in CH 598 106 through the gap between two support elements on the lowest lying product. It is operated with a matched to the distance and the speed of the support elements clock.

Bei der zweiteiligen Ausführung sind zwei Walzenteppiche vorhanden, deren Walzen bzw. Auflageelemente im Bereich der Stapelauflage in einer gemeinsamen Ebene liegen. Die Auflageelemente des ersten bzw. des zweiten Walzenteppichs sind jeweils an einem ersten bzw. zweiten Förderorgan befestigt und relativ zu diesen verschiebbar oder verschwenkbar. Der Bandförderer ist vorzugsweise zwischen den Förderorganen angeordnet.In the two-part design, there are two roll carpets whose rolls or support elements lie in the area of the stack support in a common plane. The support elements of the first and the second roll carpet are each attached to a first and second conveying member and relative to these slidable or pivotable. The belt conveyor is preferably arranged between the conveying members.

Ein Beispiel für einen solchen zweiteiligen Walzenteppich ist in der nicht vorveröffentlichten Anmeldung PCT/CH00/00530 beschrieben. Die dort verwendete Anordnung und Steuerung der Walzen kann auch für die vorliegende Vorrichtung eingesetzt werden.An example of such a two-part roll carpet is described in the non-prepublished application PCT / CH00 / 00530. The arrangement and control of the rollers used there can also be used for the present device.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und im Folgenden beschrieben. Es zeigen rein schematisch:

Fig. 1
Eine Seitenansicht einer erfindungsgemässen Vorrichtung zum Stapelabbau;
Fig. 2
eine Frontansicht entgegen der Wegförderrichtung einer erfindungsgemässen Vorrichtung mit einer Stützvorrichtung mit einem zweiteiligen Walzenteppich;
Fig. 3
eine Frontansicht einer erfindungsgemässen Vorrichtung mit einer Stützvorrichtung mit einem einteiligen Walzenteppich.
Embodiments of the invention are illustrated in the drawings and described below. It shows purely schematically:
Fig. 1
A side view of an inventive device for stacking;
Fig. 2
a front view against the Wegförderrichtung a device according to the invention with a support device with a two-piece roll carpet;
Fig. 3
a front view of an inventive device with a support device with a one-piece roller carpet.

Fig. 1 zeigt eine Seitenansicht einer erfindungsgemässen Vorrichtung zum Abbau eines Stapels 1 flacher Gegenstände. Die Vorrichtung umfasst eine Stützvorrichtung 2, die eine Vielzahl von Walzen 3 aufweist. Die Walzen sind an einem Rad 12 über Halteelemente 13 befestigt. Das Rad dient als Förderorgan für die Walzen 3. Das vom Halteelement 13 gehaltene Ende (Lagerbereich) 3a einer Walze wird beim Bewegen des Rades 12 entlang einer geschlossenen Umlaufbahn U bewegt, die hier kreisförmig ist, aber auch anders geformt sein kann. Die Umlaufbahn U liegt in einer Ebene, die hier vertikal orientiert ist. Die Walzen 3 sind relativ zum Rad 12 verschwenkbar, indem das Halteelement 13 einen fest mit dem Rad verbundenen Sockel 13a und eine drehbar damit verbundene Schelle 13b aufweist, die die Walze 3 im Lagerbereich 3a hält. Die Drehachse D der Schwenkbewegung verläuft im wesentlichen in radialer bzw. sekantialer Richtung, d.h. geht hier nicht direkt durch den Mittelpunkt M des Rads 12. Die Walzen 3 werden vorzugsweise mittels einer Kulissensteuerung mechanisch verschwenkt. Die hier nicht dargestellte Steuerkulisse wirkt dazu mit dem Halteelement 13 oder der Walze 3 auf geeignete Weise zusammen.1 shows a side view of a device according to the invention for dismantling a stack 1 of flat objects. The device comprises a support device 2, which has a multiplicity of rollers 3. The rollers are attached to a wheel 12 via retaining elements 13. The wheel serves as a conveying member for the rollers 3. The held by the holding member 13 end (storage area) 3a of a roller is moved when moving the wheel 12 along a closed orbit Moved U, which is circular here, but can also be shaped differently. The orbit U is located in a plane that is vertically oriented here. The rollers 3 are pivotable relative to the wheel 12 by the holding member 13 has a fixedly connected to the wheel base 13a and a rotatably connected clamp 13b, which holds the roller 3 in the storage area 3a. The axis of rotation D of the pivoting movement runs essentially in the radial or secantial direction, ie does not pass directly through the center M of the wheel 12. The rollers 3 are preferably pivoted mechanically by means of a linkage control. The control link not shown here interacts with the holding element 13 or the roller 3 in a suitable manner.

Erfindungsgemäss bilden die Walzen über einen Teilabschnitt A1 der Umlaufbahn U eine Auflage 7 für den Stapel 1. Dazu sind die Walzen in diesem Teilabschnitt parallel zueinander, vorzugsweise horizontal bzw. senkrecht zur Umlaufebene ausgerichtet. Vorliegend ist die Stapelauflage 7 entsprechend der Umlaufbahn U gekrümmt. Der Stapel 1 liegt auf dem durch die Walzen 3 gebildeten Rollenteppich auf und wird seitlich durch vertikale Begrenzungselemente 6 in Position gehalten. Diese definieren vorzugsweise einen Schacht, dessen Abmessungen an das Format der zu verarbeitenden Gegenstände angepasst werden können.According to the invention, the rollers form a support 7 for the stack 1 over a section A1 of the circulating path U. For this purpose, the rollers in this section are aligned parallel to one another, preferably horizontally or perpendicular to the circulating plane. In the present case, the stack support 7 is curved in accordance with the orbit U. The stack 1 rests on the roller carpet formed by the rollers 3 and is held in position laterally by vertical limiting elements 6. These preferably define a shaft whose dimensions can be adapted to the format of the objects to be processed.

Der Stapel 1 wird von unten abgebaut, indem ein Trennorgan 5 an die vordere Kante 4a des Gegenstands 4 angreift. Die vordere Kante 4a wird nach unten gezogen, beispielsweise indem das Trennorgan 5 den im Arbeitsbereich des Trennorgans zuunterst liegenden Gegenstand 4 ansaugt. Vorliegend sind drei als Sauger ausgebildete Trennorgane 5 an einem Rad 11 angeordnet. In den entstehenden Zwischenraum fährt eine Walze 3 ein und schält den vom Trennorgan weggebogenen Gegenstand bei ihrer weiteren Bewegung vom Stapel 1 ab. Zu jedem Zeitpunkt ist der Stapel 1 durch mehrere Walzen 3 von unten abgestützt. Es ist nicht notwendig, dass ein Gegenstand vollständig abgeschält wird, bevor das Trennorgan 5 auf einen weiteren Gegenstand zugreift. Vorliegend sind in Bewegungsrichtung der Walzen stromabwärts mehrere Gegenstände noch mit dem Stapel verbunden, während ihre stromaufwärts liegenden Kanten bereits vom Stapel weggebogen und untereinander durch Walzen 3 getrennt sind.The stack 1 is dismantled from below by a separating member 5 engages the front edge 4 a of the article 4. The front edge 4 a is pulled down, for example, by the separator 5 sucks the object 4 lying in the working area of the separating element at the bottom. In the present case, three separating elements 5, designed as suckers, are arranged on a wheel 11. In the resulting gap a roller 3 enters and peels off the object bent away from the separating element during its further movement from the stack 1. At any time, the stack 1 is supported by a plurality of rollers 3 from below. It is not necessary for an article to be completely peeled off before the separator 5 accesses another article. In the present case, several objects are still connected to the stack in the direction of movement of the rollers downstream, while their upstream edges are already bent away from the stack and separated from one another by rollers 3.

Beim Abtragen des Stapels verlaufen die Walzen 3 parallel zu der Vorder- bzw. Hinterkante des Stapels 1. Die Gegenstände sind daher zu jedem Zeitpunkt über ihre gesamte Breite von wenigstens einer Walze unterstützt und verdrehen sich nicht bei der Übergabe an den Bandförderer 8.When removing the stack, the rollers 3 are parallel to the front or rear edge of the stack 1. The objects are therefore supported at all times over its entire width of at least one roller and do not twist during the transfer to the belt conveyor. 8

Die Walzen 3 sind um ihre Längsachse frei drehbar und rollen auf der Stapelunterseite bzw. zwischen den unten liegenden Gegenständen ab. Es können des weiteren Mittel zum Drehantrieb der Walzen 3 im Bereich der Stapelauflage 7 vorgesehen sein, die beispielsweise am konisch geformten Ende der Walzen 3 angreifen. Dadurch kann die Reibung zwischen den Walzen 3 und den Gegenständen weiter reduziert werden. Solche statischen Reibleisten 20, die die Walzen beim ihrer Bewegung entlang der Umlaufbahn durch Reibung in Drehung versetzen, sind in den Figuren 2 und 3 dargestellt.The rollers 3 are freely rotatable about their longitudinal axis and roll on the bottom of the stack or between the underlying objects. It can further be provided in the region of the stack support 7 means for rotating the rollers 3, which attack, for example, at the conically shaped end of the rollers 3. Thereby, the friction between the rollers 3 and the objects can be further reduced. Such static friction strips 20 which cause the rollers to rotate by friction as they travel along the orbit are shown in FIGS. 2 and 3.

Der Bandförderer 8 hat ein Förderband 9, das parallel zur Ebene der Umlaufbahn U ausgerichtet ist. Das hintere Ende 8a des Bandförderers 8 befindet sich in unmittelbarer räumlicher Nähe zur Bewegungsbahn der Walzen unterhalb der Stapelauflage 7. Der Abstand und die seitliche Aufhängung 10 des Förderbandes 9 ist so gewählt, dass die Walzen 3 am hinteren Ende 8a vorbeiziehen können. Die Fallhöhe eines abgetragenen Gegenstands, d.h. der Abstand zwischen dem hinteren Ende 8a des Bandförderers 8 und dem hinteren Ende 7a der Stapelauflage 7, ist somit im wesentlichen durch den Durchmesser einer Walze 3 nach unten begrenzt. Sie kann vorteilhaft gering gehalten werden, wodurch die Gegenstände zuverlässig direkt auf dem Förderband 9 abgelegt werden können. Komplizierte Zwischenförderer sind entbehrlich.The belt conveyor 8 has a conveyor belt 9, which is aligned parallel to the plane of the orbit U. The rear end 8a of the belt conveyor 8 is located in close spatial proximity to the trajectory of the rollers below the Stacking pad 7. The distance and the lateral suspension 10 of the conveyor belt 9 is selected so that the rollers 3 can pass the rear end 8a. The drop height of a removed object, ie the distance between the rear end 8a of the belt conveyor 8 and the rear end 7a of the stack support 7, is thus substantially limited by the diameter of a roller 3 downwards. It can advantageously be kept low, whereby the objects can be reliably stored directly on the conveyor belt 9. Complicated intermediate conveyors are dispensable.

Erfindungsgemäss werden die Walzen wenigstens dort, wo der Bandförderer 8 in der Aufsicht auf die Umlaufebene die Umlaufbahn U kreuzt, verschwenkt und geben so den Weg für den Bandförderer 8 frei. In diesem Teilabschnitt A2 der Umlaufbahn liegen die Walzen 3 mit einem Winkel von weniger als 90° zur Umlaufebene. Sie können auch im wesentlichen in der Umlaufebene liegen. Der Bandförderer 8 kann daher in unmittelbarer räumlicher Nähe zum Rad 12 aus dem Bereich der Umlaufbahn U geführt werden. Er kann die Umlaufbahn auch zweifach kreuzen, z.B. rechts und links vom Stapel 1 zum Durchfördern von Produkten unter dem Stapel (hier nicht dargestellt).According to the invention, the rollers are at least where the belt conveyor 8 in the plan view of the orbital plane crosses the orbit U, pivoted and thus give way for the belt conveyor 8 free. In this section A2 of the orbit, the rollers 3 are at an angle of less than 90 ° to the orbital plane. They can also lie substantially in the orbital plane. The belt conveyor 8 can therefore be performed in the immediate vicinity of the wheel 12 from the area of the orbit U. It can also cross the orbit twice, e.g. right and left of the stack 1 for conveying products under the stack (not shown here).

Vorliegend sind die Walzen 3 im unteren Bereich A3 der Umlaufbahn U derart verschwenkt, dass sie in der Ebene der Umlaufbahn liegen. Die Stützvorrichtung 2 hat daher in diesem unteren Bereich A3 eine besonders geringe Querausdehnung. Im Prinzip ist es jedoch ausreichend, dass die Walzen nur in dem Bereich A2, in dem die Wegfördereinrichtung 8 kreuzt, aus den Weg gebracht werden. Die Walzen können dazu linear verschoben oder wie hier verdreht werden, wobei auch eine Schwenkbewegung um weniger als 90° ausreichend sein kann.In the present case, the rollers 3 are pivoted in the lower region A3 of the orbit U in such a way that they lie in the plane of the orbit. The support device 2 therefore has a particularly small transverse extent in this lower region A3. In principle, however, it is sufficient that the rollers are dislodged only in the area A2 in which the path conveying device 8 crosses. The rollers can be moved to linear or twisted as here be, whereby a pivoting movement may be sufficient by less than 90 °.

Fig. 2 zeigt eine Frontansicht einer erfindungsgemässen Vorrichtung mit einer Stützeinrichtung 2 mit einem ersten und einem zweiten Walzensystem 2a, 2b. Die Anordnung ist spiegelsymetrisch zu einer Mittelebene M1. Die Darstellung gemäss Fig. 1 entspricht einem Schnitt entlang dieser Mittelebene M1.FIG. 2 shows a front view of a device according to the invention with a support device 2 with a first and a second roller system 2a, 2b. The arrangement is mirror symmetrical to a center plane M1. The illustration according to FIG. 1 corresponds to a section along this center plane M1.

An einem senkrecht stehenden ersten Rad 12a sind erste Walzen 3' über Halteelemente 13 befestigt und werden entlang einer Umlaufbahn U1 bewegt. Spiegelsymetrisch dazu sind zweite Walzen 3" an einem zweiten Rad 12b mit Halteelementen 13 befestigt. Im oberen Bereich der Stützvorrichtung 2 sind die Walzen 3', 3" horizontal und jeweils paarweise koaxial angeordnet. Im oberen Bereich der Vorrichtung bilden die Walzen 3', 3" eine Auflage 7 für den Stapel 1. Dieser ist seitlich durch Stützelemente 6 begrenzt.On a vertical first wheel 12a, first rollers 3 'are fastened via holding elements 13 and are moved along an orbit U1. For mirror-symmetrical purposes, second rollers 3 "are fastened to a second wheel 12b with holding elements 13. In the upper area of the supporting device 2, the rollers 3 ', 3" are arranged horizontally and in pairs coaxially. In the upper part of the device, the rollers 3 ', 3 "form a support 7 for the stack 1. This is laterally limited by support elements 6.

Ein Trennorgan 5 greift zwischen einer ersten und einer zweiten Walze 3', 3" von unten auf den Stapel 1 zu, wobei die Stirnflächen der Walzen zum Durchgriff des Trennorgans 5 voneinander beabstandet sind (Abstand W1). Durch ein nachlaufendes Walzenpaar wird das Produkt abgetrennt und fällt auf den Bandförderer 8. Es entsteht eine Schuppenformation 14. Der Bandförderer 8 ist zwischen dem ersten und dem zweiten Rad 12a bzw. 12b der Stützvorrichtung 2 angeordnet. Erfindungsgemäss werden die Walzen 3', 3" bei der Bewegung entlang ihrer Umlaufbahn U1 bzw. U2 aus ihrer Lage senkrecht zur Umlaufebene E1 bzw. E2 in eine Orientierung in der Umlaufebene E1 bzw. E2 bzw. einem Winkel von weniger als 90° dazu verschwenkt. Damit kann der Bandförderer aus dem durch die Umlaufbahnen U1 bzw. U2 begrenzten Gebiet zwischen den Umlaufebenen E1 und E2 hinausgeführt werden. Die Weite W2 zwischen den ersten und zweiten Walzen 3' bzw. 3" in dem Bereich, in dem die Wegfördereinrichtung 8 hinausgeführt wird, entspricht wenigstens der Breite B des Bandförderers. Eine solche Stapelabbauvorrichtung ist kompakt und schmal.A separating element 5 engages the stack 1 from below between a first and a second roller 3 ', 3 ", the end faces of the rollers being spaced apart from one another (distance W1) for passage of the separating member 5. The product is separated by a trailing pair of rollers The belt conveyor 8 is arranged between the first and the second wheel 12a or 12b of the support device 2. According to the invention, the rollers 3 ', 3 "are moved during their movement along their orbit U1 or U1 U2 pivoted from its position perpendicular to the orbital plane E1 or E2 in an orientation in the orbital plane E1 or E2 or an angle of less than 90 ° thereto. This can be the Belt conveyors are led out of the area circumscribed by the orbits U1 and U2 between the circulation planes E1 and E2. The width W2 between the first and second rollers 3 'and 3 "in the area in which the path conveying device 8 is led out corresponds at least to the width B of the belt conveyor.

Die gezeigte Vorrichtung mit zwei spiegelsymetrischen Walzenanordnungen hat den Vorteil, dass eine schnelle Anpassung an unterschiedliche Formate möglich ist, indem beispielsweise der Abstand der Umlaufebenen E1 und E2 bzw. der Räder 12a, 12b vergrössert oder verkleinert wird. Die mechanische Stabilität der Vorrichtung wird dabei auf einfache Weise gewahrt. Ein weiterer Vorteil ist, dass das Trennorgan 5 zu jedem Zeitpunkt von unten auf den Stapel zugreifen kann und keine Synchronisation mit der Bewegung der Walzen 3', 3" notwendig ist.The device shown with two mirror-symmetric roller arrangements has the advantage that rapid adaptation to different formats is possible, for example by increasing or decreasing the distance of the circulation planes E1 and E2 or the wheels 12a, 12b. The mechanical stability of the device is thereby ensured in a simple manner. Another advantage is that the separating member 5 can access the stack from below at any time and no synchronization with the movement of the rollers 3 ', 3 "is necessary.

Fig. 3 zeigt ein weiteres Beispiel für eine erfindungsgemässe Vorrichtung mit einer Stützvorrichtung 2 mit einem Einfach-Rollenteppich. Der Aufbau der Stützvorrichtung 2 entspricht im wesentlichen dem Aufbau des linken bzw. rechten Teils der Stützvorrichtung gemäss Fig. 2. Fig. 1 entspricht einer Seitenansicht dieser Vorrichtung.3 shows another example of a device according to the invention with a supporting device 2 with a single roller carpet. The structure of the support device 2 substantially corresponds to the structure of the left or right part of the support device according to FIG. 2. FIG. 1 corresponds to a side view of this device.

Walzen 3 sind über Halteelemente 13 an einem Rad 12 befestigt und relativ zu diesem verschwenkbar. Im oberen Teil der Vorrichtung bilden die Walzen 3 die Stapelauflage 7. Im unteren Teil sind die Walzen aus dem Weg geschwenkt, so dass die Wegfördereinrichtung 8 parallel zum Rad 12 bzw. zur Umlaufebene E verlaufen kann. Zur mechanischen Abstützung ist ein Stützgerüst 15 vorhanden, in welchem das Rad 12 gelagert ist. Vorzugsweise stützt sich auch die Wegfördereinrichtung 8 am Stützgerüst 15 ab. Das Trennorgan 5 greift durch die Zwischenräume zwischen zwei Walzen 3 die Unterseite des Stapels 1 zu.Rollers 3 are attached via holding elements 13 to a wheel 12 and pivotable relative thereto. In the upper part of the device, the rollers 3 form the stacking support 7. In the lower part, the rollers are pivoted out of the way, so that the removal device 8 can run parallel to the wheel 12 or the orbital plane E. For mechanical support, a support frame 15 is provided, in which the wheel 12 is mounted. Preferably also supports the Off conveyor 8 on the scaffold 15 from. The separating element 5 engages through the intermediate spaces between two rollers 3 to the bottom of the stack 1.

Bei den vorliegenden Beispielen werden die Walzen um eine im wesentlichen normal zur Umlaufbahn U bzw. U1, U2 verlaufende Achse geschwenkt. Es ist auch möglich, den Schwenkvorgang um eine andere Achse zu realisieren. Ein Verschwenken um eine tangential zur Umlaufbahn verlaufende Achse ist beispielsweise in der nicht vorveröffentlichten internationalen Patentanmeldung PCT/CH00/00530 beschrieben und dargestellt. Dort sind auch weitere Möglichkeiten für die Halterung der Walzen an der Stützvorrichtung bzw. an einem Förderorgan beschrieben, welche im Rahmen der vorliegenden Erfindung ebenfalls verwendet werden können. Anstelle der Walzen können auch andere Auflageelemente verwendet werden, z.B. Leisten, Stifte oder dergleichen.In the present examples, the rollers are pivoted about an axis substantially normal to the orbit U or U1, U2 extending axis. It is also possible to realize the pivoting about another axis. A pivoting about an axis running tangentially to the orbit is described and illustrated, for example, in the non-prepublished international patent application PCT / CH00 / 00530. There are also described further possibilities for mounting the rollers on the support device or on a conveying member, which can also be used in the context of the present invention. Instead of the rollers, other support elements may be used, e.g. Moldings, pins or the like.

Claims (12)

  1. Apparatus for reducing a stack (1) of flat, flexible articles, in particular printed products, having bearing elements (3, 3', 3") which are moved along a continuous circulatory path (U, U1, U2) and, in a first sub-section (A1) of the circulatory path (U, U1, U2), form a stack rest (7), having at least one separating element (5) which is capable of raising off a region (4a) of the lowermost article (4) located in the stack (1) from the rest of the stack (1) such that at least one following bearing element (3, 3', 3"), as seen in the direction of circulation, can move in between the raised-off article (4) and the rest of the stack (1) and can separate off the article (4) from the rest of the stack (1) as it moves further, and having a belt conveyor (8) which is arranged beneath the stack rest (7) and on the conveying belt (9) of which the articles (4) separated from the stack (1) are directly deposited, characterized in that the belt conveyor (8) crosses over the circulatory path (U, U1, U2) of the bearing elements (3, 3', 3") and the bearing elements (3, 3', 3") can be pivoted or displaced such that it is possible to change their position relative to the circulatory path (U, U1, U2) at least in the crossover region with the belt conveyor (8).
  2. Apparatus according to Claim 1, characterized in that the bearing elements (3, 3', 3") are oriented parallel to the leading and/or trailing edge of the stack (1).
  3. Apparatus according to Claim 1 or 2, characterized in that the bearing elements are rollers (3, 3', 3") which can be rotated freely about their longitudinal axis.
  4. Apparatus according to Claim 1, 2 or 3, characterized in that the bearing elements (3, 3', 3") are pivoted or displaced such that the belt conveyor (8) is capable of conveying the articles in the immediate vicinity of the circulatory path (U, U1, U2) out of the region bounded by the circulatory path, the circulatory path (U, U1, U2) preferably running in a plane (E, E1, E2) and the belt conveyor (8) running essentially parallel thereto.
  5. Apparatus according to one of the preceding claims, characterized in that a number of first bearing elements (3') are moved along a first circulatory path (U1) and a number of second bearing elements (3") are moved along a second circulatory path (U2), the first and the second circulatory paths (U1, U2) being parallel to one another at least in the region of the stack rest (7).
  6. Apparatus according to Claim 5, characterized in that the first and second bearing elements (3, 3', 3") are spaced apart from one another in the region of the stack rest (7), a gap running parallel to the circulatory paths (U1, U2) being formed in the process, and the separating element (5) preferably having access to the stack (1) in the region of this gap.
  7. Apparatus according to Claim 5 or 6, characterized in that the spacing between the first and second bearing elements (3', 3") is increased by the pivoting or displacement such that the belt conveyor (8), without being obstructed mechanically by the bearing elements, can be routed out of the region bounded by the first and the second circulatory paths (U1, U2), between said circulatory paths (U1, U2).
  8. Apparatus according to one of Claims 5 to 7, characterized in that there is a variable spacing between the first and the second circulatory paths (U1, U2) in the region of the stack rest (7), for adaptation of the width of the stack rest (7) to the stack width.
  9. Apparatus according to one of the preceding claims, characterized in that the separating element (5) is moved cyclically such that it acts on the lowermost article (4) between two successive bearing elements (3, 3', 3"), as seen in the direction of circulation.
  10. Apparatus according to one of the preceding claims, characterized in that the bearing elements (3, 3', 3"), in the first sub-section of the circulatory path (U, U1, U2), is oriented horizontally and perpendicularly to the circulatory plane and, in a second sub-section (A2, A3) of the circulatory path, is oriented essentially in the circulatory plane (E, E1, E2) or at a small angle thereto.
  11. Apparatus according to one of the preceding claims, characterized in that bearing elements (3, 3', 3") are pivoted, about an axis running essentially tangentially to the circulatory path (U, U1, U2), into an orientation essentially normal to the circulatory path (U, U1, U2) and essentially in the circulatory plane (E, E1, E2) or are pivoted, about an axis (D) running in the circulatory plane (E, E1, E2), essentially normal to the circulatory path (U, U1, U2), into an orientation essentially tangential to the circulatory path (U, U1, U2).
  12. Apparatus according to one of the preceding claims, characterized in that the bearing elements (3, 3', 3") are fastened on a conveying element (12, 12a, 12b) which is moved along the circulatory path (U, U1, U2), in particular a chain or a wheel.
EP02005716A 2001-04-18 2002-03-13 Device for disassambling a pile of flat and flexible objects Expired - Lifetime EP1254855B1 (en)

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CH7042001 2001-04-18

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AT (1) ATE316507T1 (en)
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WO2007051324A1 (en) * 2005-11-01 2007-05-10 Ferag Ag Method of, and apparatus for, transferring sheet-like products from a stack of products to a conveying belt
EP2035308B1 (en) * 2006-06-30 2016-07-20 Ferag AG Device for separating individual flat objects from a stack and for transporting away the separated objects
EP2128055B1 (en) 2008-05-26 2013-08-14 Ferag AG Device for separating individual flat, flexible objects from the underside of a stack of such objects and removing the separated objects
EP2253566B1 (en) * 2009-05-22 2013-07-31 Müller Martini Holding AG Device for feeding a processing line with printed products
CH706769A1 (en) 2012-07-27 2014-01-31 Ferag Ag Device for separating single flat, bendable objects from the bottom of a stack of such articles.

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US1876606A (en) * 1932-09-13 bushnell
CH598106A5 (en) 1976-07-29 1978-04-28 Ferag Ag
ATE113925T1 (en) * 1989-09-13 1994-11-15 Ferag Ag METHOD AND DEVICE FOR THE FURTHER PROCESSING OF STACKED, PREFERABLY FOLDED PRINTING PRODUCTS.
US5556254A (en) * 1995-06-07 1996-09-17 Standard Duplicating Machines Corporation Paper set feeding
DE19549675B4 (en) * 1995-07-07 2005-02-17 Windmöller & Hölscher Kg Method for separating stacked flat tube pieces
IT1288191B1 (en) * 1995-07-11 1998-09-11 Windmoeller & Hoelscher DEVICE FOR SINGULARIZING STACKED FLAT OBJECTS.
NL1007943C2 (en) * 1997-12-31 1999-07-01 Hadewe Bv Apparatus and method for separating sheets from a stack.
WO2001032539A1 (en) * 1999-11-02 2001-05-10 Ferag Ag Method and device for dispatching flat products

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DE50205681D1 (en) 2006-04-13
EP1254855A2 (en) 2002-11-06
DK1254855T3 (en) 2006-02-20
US20020153653A1 (en) 2002-10-24
EP1254855A3 (en) 2003-01-29
ATE316507T1 (en) 2006-02-15

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