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EP1232977B1 - Method and device for individually separating flat objects from a pile - Google Patents

Method and device for individually separating flat objects from a pile Download PDF

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Publication number
EP1232977B1
EP1232977B1 EP02001290A EP02001290A EP1232977B1 EP 1232977 B1 EP1232977 B1 EP 1232977B1 EP 02001290 A EP02001290 A EP 02001290A EP 02001290 A EP02001290 A EP 02001290A EP 1232977 B1 EP1232977 B1 EP 1232977B1
Authority
EP
European Patent Office
Prior art keywords
stack
stop
separating element
axis
top object
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
EP02001290A
Other languages
German (de)
French (fr)
Other versions
EP1232977A1 (en
Inventor
Willy Leu
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ferag AG filed Critical Ferag AG
Publication of EP1232977A1 publication Critical patent/EP1232977A1/en
Application granted granted Critical
Publication of EP1232977B1 publication Critical patent/EP1232977B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • 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
    • B65H3/36—Separating articles from piles by separators moved in special paths, e.g. enclosing an area
    • B65H3/38—Separating articles from piles by separators moved in special paths, e.g. enclosing an area the paths not enclosing an area
    • 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
    • B65H2301/42324—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 top of the pile
    • B65H2301/423245—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 top of the pile the pile lying on a stationary support, i.e. the separator moving according to the decreasing height 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
    • B65H2301/4234—Depiling; Separating articles from a pile assisting separation or preventing double feed

Definitions

  • the invention relates to a method and a device for piece-wise dismantling of a stack of flat objects according to the preambles of claims 1 and 7, respectively.
  • a method and apparatus for mining a stack from flat objects are known from CH 436349.
  • That one there described method is a stack of two-dimensional Items dismantled piece by piece by the top one Object of the stack in its plane from the stack unscrewed, gripped at its free edge and is removed from the stack.
  • the top item comes with a drive element or separating element that moves on the top item can be switched on and off is.
  • For gripping and removing the screwed out Funds serve the purpose.
  • the well-known process has the advantage that the movement of the top one Realized object very simply in its level can be.
  • the problem here is the friction between two superimposed objects causes the second top item when moving the top item is taken. This will make it Grab the top item that has been unscrewed difficult and the alignment of the stack disturbed.
  • the height of the corner separators is to be chosen so that the three corners of the move the top arc over the corner separators can, but not the arches underneath be twisted.
  • the clamping finger must be in time with the Twist of the top arc can be controlled so that he always holds the second uppermost bow and for releases at the right time.
  • the clock rate of the device is limited, since the uppermost arch only largely from the Stack must be conveyed out before the turntable can access the second top sheet.
  • a similar Device is known from DE-A 1237587.
  • No. 3,583,697 describes a method and an apparatus for piecewise dismantling of a stack of flat objects disclosed, in which the top object by a separating element in the Force or frictional engagement moves against a stop is that it bulges out and evades it laterally, so that it can be gripped and pulled off the stack.
  • the Separating element is stationary and has the shape of a roll, the one running parallel to the plane of the objects Axis is rotatable.
  • a paper cassette is known from US Pat. No. 6,068,157 comprises a linearly movable separating element. On Lift mechanism ensures that the top sheet is always in is on the same level.
  • the invention is therefore based on the object Specify method and an apparatus in which the individual items in a simple manner with high The number of measures can be removed from a stack without the Affect stack formation. Removing the top item should be independent of the stack height expire.
  • the invention is particularly for separating very flat, flexible objects such as sheets of paper or plastic suitable.
  • a movable separating element in its plane at least in the area of one of its corners moved against a stop.
  • the attack bumps and is moved further it is bent so that he preferably sidesteps the stop and is moved out of the stack.
  • All under the top one Object lying objects are by the stop stopped and stay aligned provided they are in Friction with the top object were moved.
  • the top item is preferably a Movement component perpendicular to the stop and one Movement component moves transversely to it, so that it against the Attack hits, turns up against it and finally jumps off to the side and preferably in its plane can be moved further, e.g. also by suitable Removal means.
  • the stop preferably only acts on a corner of the item. Such an attack can be easily overcome by the top object, while he reliably in all other items in the stack Holds position.
  • the stop preferably extends from the support surface of the stack to a height that is slightly larger than the typical stack height. The The height of the stop does not have to be adapted to the stack height especially if the top item like already described pushed past the stop becomes.
  • the top arc can be moved linearly, in the case a rectangular object preferably obliquely its edges and to align the stop. Especially however, a rotary movement can be easily realized of the topmost object by one perpendicular to the plane of the Object rotating axis.
  • the top item is set in motion by a separating element, the preferably in frictional or frictional engagement with the uppermost Object acts.
  • a separating element can also be used Suction are used.
  • the Trailing edge of the object with a sucker and can be gripped by a slider, the object from the stack.
  • the separating element Increase in the number of cycles.
  • the top bow is through the Movement of the separating element in force or friction until it jumps off the stop and is offset from the stacking surface.
  • the separating element is then moved back to its starting position where it is directly on a now exposed area of the accesses the second uppermost arch and this when Can move forward.
  • the top sheet by suitable means of transport from the Stack drawn. Under "Grab” any kind of Transfer to the means of transport understood, e.g. also Storage on a conveyor belt.
  • the invention allows particularly simple a scale formation of the separated Create arcs.
  • the separating element preferably describes part of a circular path.
  • the hub or the distance traveled The route need only be as long until the against the Edge of the uppermost sheet from the stop jump off. Depending on the design of the stop, it is therefore sufficient a trajectory of fractions of the arc length.
  • the Clock frequency of the device can be increased accordingly become.
  • 1A-C shows the implementation of the inventive Separierbacters.
  • a stack of 1 rectangular, flat Objects 2, 3 are located on a support surface 4, which is laterally limited by a stop 5.
  • the Stop 5 is a flat, vertically aligned web educated.
  • the front edge 2a, 3a of the objects touches the front face 5a of the stack 1 Stop 5.
  • the stop 5 extends laterally only over a fraction of the front edge 2a, 3a of the flat Items.
  • a pressure element 7 At the corner 5 diagonally opposite the stop Contact surface 4 is a pressure element 7. With this is exerted pressure on the stack 1 from above, whereby the objects 2, 3 in a perpendicular to their Level direction fixed and held together become.
  • the pressure element 7 becomes floating Way with a holding device 13 on the stack 1 placed what is shown in Figures 2-4.
  • a lever 9 about a lever 9 is a separating element 6 with the Pressure element 7 pivotally connected, so that The height of the separating element 6 is automatically adjusted is that it is always the top item 2 of the stack 1 is able to move.
  • the separating element 6 is around one perpendicular to the plane of the flat objects 2, 3 axis of rotation 10 extending through the pressure element 7 pivoted.
  • the separating element 6 takes the top one Item 2 when moving towards the stop 5 in frictional or frictional engagement with.
  • the situation with this Forward movement is shown in Fig. 1A.
  • the top one Object 2 thereby moved against the stop 5 and there surfaced. As it moves forward, it glides the front corner 2b of the top object on the Side edge 5b of the stop over. This situation is shown in Fig. 1B.
  • the separating element 6 is then through Swing back about the axis 10 in its starting position moved back.
  • the top one pushed out of the stack Item 2 can now e.g. in the Gripped area of the leading edge 2a, e.g. to a Conveyor belt are put down, and transported away.
  • the separating element 6 When the separating element 6 is pulled back into its The starting position is the adhesion with the top one Item 2 or the one below it is now released Item 3 solved.
  • the separating element 6 comprises present example a role 11 with a strong grippy surface that moves when moving forward does not turn towards the stop and during the backward movement from the stop to the one on top Objects unrolls.
  • Alternative separation elements are i 6A-6C and 7A-7C.
  • the distance de Separating element 6 from the axis of rotation 10 or the Pressure element 7 is variable via a carriage 12.
  • the Carriage 12 can be moved on the lever 9.
  • a stack 1 flat objects 2, 3 is on a level Contact surface 4.
  • the stack 1 is in the area of its Front edge 1A of a vertically aligned flat Stop 5 limited.
  • At its 5 stop at an angle opposite corner 1b is the stack 1 of one Pressure element 7 weighed down.
  • the pressure element 7, here in Shape of a pressure ball is on a holding device 13 held floating.
  • the holding device 13 comprises two Columns 13a, 13b arranged laterally from the stack 1 which a web 13c is resiliently suspended.
  • the web 13c is movable in the vertical direction.
  • the pressure element 7 is connected to the web 13c via a holding element 16 and can be used to adapt the device to different Dimensions of the stack 1 shifted along the web 13c become.
  • the pressure element is also over an axis 17 running parallel to the columns 13a, 13b pivotable.
  • the pressure element 7 is rigid connected to the web 13c. About the height of the web 13c the height of the stack 1 can therefore be determined.
  • On Separating element 6 is via a lever 9 with the pressure element 7 connected. It is a perpendicular to the support surface 4 through the pressure element 7 axis of rotation 10 swiveling. Due to the construction shown ensures that the pressure element is always on the Stack 1 rests. Using a suitable drive the separating element 6 in the direction of the axis of rotation 10 the stop 5 rotated to the top object 2 first with its front edge 2a against the stop 5 and finally push past it sideways.
  • the separated products are aligned at an angle to stack 1 and are in a scale formation 8 of one Conveyor 18 transported away.
  • the conveyor 18 can be a belt conveyor or a gripper conveyor his.
  • objects can be 2 also individually removed from the stack and processed become.
  • FIG. 5 schematically shows a snapshot of the stack 1, the uppermost object 2 of the separating element 6 is moved against the stop 5.
  • the front edge 2a of the uppermost object 2 hits the stop 5, so that the top object 2 is in the area of its Bulge facing corner 2b.
  • the top When moving on of the top object 2 with a movement component transverse to the orientation of the stop 5 is the top Finally bent the object so far that it is sideways glides past the stop 5, see also FIG. 1b.
  • the separating element can then be returned to the starting position, which is shown in Fig. 4 can be moved back.
  • FIG. 6A 6C shows two different ones Separating elements in two side views or in the top view.
  • the separating element 6 according to FIG. 6A 6C includes a roller 11 which is attached to a holding element 19 about a pivot axis running parallel to the roller axis 14 is pivotally mounted.
  • the roller 11 has one sticking coating.
  • the separating element 6 has one Backstop, so that the roller 11 when moving out of the Starting position blocked in the direction of the stop 5 and so the top item is the frictional or frictional connection pushes against the stop. When moving back to the Starting position rolls the roll on the top one Object with low friction.
  • the separating element 6 ' accordinging to 7A-7C includes a thumb clamp 15 which is on a holding element 19 'pivotable about an axis 16 is arranged.
  • the thumb clamp 15 has one sticking coating, which when moving the Separating element 6 'the top object 2 in Friction also moves.
  • the thumb clamp lock 15 is pivoted so that that a non-stick area or a built-in role as little friction as possible over the top item slides or rolls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Forming Counted Batches (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)

Abstract

A method for dismantling a stack (1) of flat objects (2, 3) piece by piece, in which the top object (2) of the stack (1) is moved in its plane, gripped at its freed edge and removed from the stack (1). The top object (2) is moved against a stop (5), at least in the region of one of its corners (2b), by a movable separating element (6, 6') and, as a result of further movement, is bent in such a way that it escapes from the stop (5) and is moved out of the stack (1). The invention further relates to an apparatus for dismantling a stack (1) of flat objects (2, 3) piece by piece.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum stückweisen Abbau eines Stapels flacher Gegenstände nach den Oberbegriffen der Ansprüche 1 bzw. 7.The invention relates to a method and a device for piece-wise dismantling of a stack of flat objects according to the preambles of claims 1 and 7, respectively.

Ein Verfahren und eine Vorrichtung zum Abbau eines Stapels aus flachen Gegenständen sind aus der CH 436349 bekannt. Bei dem dort beschriebenen Verfahren wird ein Stapel flächenhafter Gegenstände stückweise abgebaut, indem der oberste Gegenstand des Stapels in seiner Ebene aus dem Stapel herausgedreht, an seinem freiwerdenden Rand ergriffen und vom Stapel entfernt wird. Der oberste Gegenstand wird mit einem Antriebsorgan bzw. Separierelement bewegt, das auf den obersten Gegenstand zu- und von diesem wegschaltbar ist. Zum Ergreifen und Entfernen des herausgedrehten Gegenstandes dienen Fördermittel. Das bekannte Verfahren hat den Vorteil, dass die Bewegung des obersten Gegenstandes in seiner Ebene sehr einfach realisiert werden kann. Problematisch hierbei ist jedoch die Reibung zwischen zwei aufeinanderliegenden Gegenständen, die dazu führt, dass der zweitoberste Gegenstand beim Bewegen des obersten Gegenstandes mitgenommen wird. Dadurch wird das Ergreifen des herausgedrehten obersten Gegenstandes erschwert und die Ausrichtung des Stapels gestört.A method and apparatus for mining a stack from flat objects are known from CH 436349. With that one there described method is a stack of two-dimensional Items dismantled piece by piece by the top one Object of the stack in its plane from the stack unscrewed, gripped at its free edge and is removed from the stack. The top item comes with a drive element or separating element that moves on the top item can be switched on and off is. For gripping and removing the screwed out Funds serve the purpose. The well-known process has the advantage that the movement of the top one Realized object very simply in its level can be. However, the problem here is the friction between two superimposed objects causes the second top item when moving the top item is taken. This will make it Grab the top item that has been unscrewed difficult and the alignment of the stack disturbed.

Eine weitere Vorrichtung zum Vereinzeln und Fördern von Bögen ist aus DE-A 4136194 bekannt. Hierbei wird der oberste Bogen schräg zur Bogenvorderkante beschleunigt und an einer freiwerdenden Kante ergriffen. Auch hierbei besteht das Problem, dass weiter unten liegende Bögen beim Bewegen des obersten Bogens durch Reibung mitgenommen werden.Another device for separating and conveying Bows are known from DE-A 4136194. Here, the top sheet accelerated diagonally to the sheet leading edge and gripped at an edge that becomes free. Here too there is the problem that arches lying below Moving the top sheet dragged by friction become.

Eine weitere Vorrichtung, bei der einzelne Bögen eines Bogenstapels durch Verdrehen mittels eines Drehtellers vereinzelt werden, ist aus der DE-A 19642485 bekannt. Um zu verhindern, dass die unteren Bögen beim Verdrehen des obersten Bogen verrutschen, sind an mindestens drei Ecken des Bogenstapels Eckenseparatoren angebracht. Diese haben die Aufgabe, zumindest die im oberen Bereich des Bogenstapels liegenden Bögen auf dem Stapel zu halten. Zur weiteren Verhinderung des Verrutschens wird vorgeschlagen, einen Klemmfinger auf die Freifläche des an zweitoberster Stelle liegenden Bogens aufzulegen, die beim Verdrehen des obersten Bogens entsteht. An dieser Freifläche kann der Klemmfinger angreifen und den Bogenstapel halten. Beide Lösungsvorschläge haben den Nachteil, dass die Lage der Eckenseparatoren bzw. des Klemmfingers an die momentane Stapelhöhe angepasst sein muss. Die Höhe der Eckenseparatoren ist so zu wählen, dass sich die drei Ecken des obersten Bogens über die Eckenseparatoren hinwegbewegen können, die darunter liegenden Bögen jedoch nicht mitverdreht werden. Der Klemmfinger muss im Takt mit der Verdrehung des obersten Bogens so gesteuert werden, dass er stets den zweitobersten Bogen festhält und zur richtigen Zeit freigibt. Die Taktzahl der Vorrichtung ist begrenzt, da der oberste Bogen erst weitgehend aus dem Stapel hinausgefördert werden muss, bevor der Drehteller auf den zweitobersten Bogen zugreifen kann. Eine ähnliche Vorrichtung ist aus der DE-A 1237587 bekannt. Another device in which individual sheets of a Sheet stack by twisting using a turntable be isolated, is known from DE-A 19642485. Around to prevent the lower arches from twisting the top arc slip, are at least three corners of the sheet stack corner separators attached. Have this the task, at least in the upper part of the Keep the stack of sheets lying on the stack. to further prevention of slipping is proposed a clamping finger on the free space of the second on top Place lying sheet, which when turning the top arc arises. On this open space, the Grip the clamping fingers and hold the sheet stack. Both Proposed solutions have the disadvantage that the location of the Corner separators or the clamping finger to the current Stack height must be adjusted. The height of the corner separators is to be chosen so that the three corners of the move the top arc over the corner separators can, but not the arches underneath be twisted. The clamping finger must be in time with the Twist of the top arc can be controlled so that he always holds the second uppermost bow and for releases at the right time. The clock rate of the device is limited, since the uppermost arch only largely from the Stack must be conveyed out before the turntable can access the second top sheet. A similar Device is known from DE-A 1237587.

In der US 3,583,697 ist ein Verfahren und eine Vorrichtung zum stückweisen Abbau eines Stapels flacher Gegenstände offenbart, bei dem der oberste Gegenstand durch ein Separierelement im Kraft- oder Reibschluss derart gegen einen Anschlag bewegt wird, dass er sich aufwölbt und diesem seitlich ausweicht, so dass er ergriffen und vom Stapel abgezogen werden kann. Das Separierelement ist stationär und hat die Form einer Rolle, die um eine parallel zur Ebene der Gegenstände verlaufende Achse drehbar ist.No. 3,583,697 describes a method and an apparatus for piecewise dismantling of a stack of flat objects disclosed, in which the top object by a separating element in the Force or frictional engagement moves against a stop is that it bulges out and evades it laterally, so that it can be gripped and pulled off the stack. The Separating element is stationary and has the shape of a roll, the one running parallel to the plane of the objects Axis is rotatable.

Durch die US 6,068,157 ist eine Papierkassette bekannt, die ein linear verfahrbares Separierelement umfasst. Ein Hubmechanismus sorgt dafür, dass das oberste Blatt stets in derselben Ebene liegt. A paper cassette is known from US Pat. No. 6,068,157 comprises a linearly movable separating element. On Lift mechanism ensures that the top sheet is always in is on the same level.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung anzugeben, bei dem bzw. bei der einzelne Gegenstände auf einfache Weise mit hoher Taktzahl von einem Stapel entfernt werden können, ohne die Stapelformation zu beeinträchtigen. Das Entfernen des obersten Gegenstands soll unabhängig von der Stapelhöhe ablaufen.The invention is therefore based on the object Specify method and an apparatus in which the individual items in a simple manner with high The number of measures can be removed from a stack without the Affect stack formation. Removing the top item should be independent of the stack height expire.

Die Aufgabe wird gelöst durch ein Verfahren mit den Merkmalen von Anspruch 1. Die Aufgabe wird weiterhin gelöst durch eine Vorrichtung mit den Merkmalen von Anspruch 7. Vorteilhafte Weiterbildungen des Verfahrens und der Vorrichtung sind in den abhängigen Ansprüchen, der Beschreibung und in den Zeichnungen dargestellt.The task is solved by a procedure with the Features of claim 1. The task continues solved by a device with the features of Claim 7. Advantageous further developments of the method and the device are in the dependent claims Description and shown in the drawings.

Die Erfindung ist besonders zum Separieren von sehr flachen, flexiblen Gegenständen wie Papier- oder Kunststoffbögen geeignet. Erfindungsgemäss wird der oberste Gegenstand durch ein verfahrbares Separierelement in seiner Ebene wenigstens im Bereich einer seiner Ecken gegen einen Anschlag bewegt. Indem er gegen den Anschlag stösst und dabei weiter bewegt wird, wird er so gebogen, dass er dem Anschlag vorzugsweise seitlich ausweicht und aus dem Stapel herausbewegt wird. Alle unter dem obersten Gegenstand liegenden Gegenstände werden durch den Anschlag gestoppt und bleiben ausgerichtet, sofern sie im Reibschluss mit dem obersten Gegenstand mitbewegt wurden. Der oberste Gegenstand wird vorzugsweise mit einer Bewegungskomponente senkrecht zum Anschlag und einer Bewegungskomponente quer dazu bewegt, so dass er gegen den Anschlag stösst, sich dagegen aufstaucht und schliesslich seitlich davon abspringt und vorzugsweise in seiner Ebene weiterbewegt werden kann, z.B. auch durch geeignete Wegfördermittel. Der Anschlag wirkt vorzugsweise nur auf eine Ecke des Gegenstands ein. Ein solcher Anschlag kann vom obersten Gegenstand leicht überwunden werden, während er zuverlässig alle anderen Gegenstände des Stapels in Position hält. Der Anschlag erstreckt sich vorzugsweise von der Auflagefläche des Stapels bis in eine Höhe, die geringfügig grösser als die typische Stapelhöhe ist. Die Höhe des Anschlags muss nicht an die Stapelhöhe angepasst werden, insbesondere wenn der oberste Gegenstand wie bereits beschrieben seitlich am Anschlag vorbeigeschoben wird.The invention is particularly for separating very flat, flexible objects such as sheets of paper or plastic suitable. According to the top Object by a movable separating element in its plane at least in the area of one of its corners moved against a stop. By opposing the attack bumps and is moved further, it is bent so that he preferably sidesteps the stop and is moved out of the stack. All under the top one Object lying objects are by the stop stopped and stay aligned provided they are in Friction with the top object were moved. The top item is preferably a Movement component perpendicular to the stop and one Movement component moves transversely to it, so that it against the Attack hits, turns up against it and finally jumps off to the side and preferably in its plane can be moved further, e.g. also by suitable Removal means. The stop preferably only acts on a corner of the item. Such an attack can be easily overcome by the top object, while he reliably in all other items in the stack Holds position. The stop preferably extends from the support surface of the stack to a height that is slightly larger than the typical stack height. The The height of the stop does not have to be adapted to the stack height especially if the top item like already described pushed past the stop becomes.

Der oberste Bogen kann linear bewegt werden, im Falle eines rechteckigen Gegenstandes vorzugsweise schräg zu seinen Kanten und zur Ausrichtung des Anschlags. Besonders einfach realisieren lässt sich jedoch eine Drehbewegung des obersten Gegenstands um eine senkrecht zur Ebene des Gegenstands verlaufende Drehachse. Der oberste Gegenstand wird von einem Separierelement in Bewegung gesetzt, das vorzugsweise im Kraft- bzw. Reibschluss auf den obersten Gegenstand einwirkt. Es kann auch ein Separierelement mit Saugwirkung eingesetzt werden. Des weiteren kann die Hinterkante des Gegenstands mit einem Sauger angehoben und von einem Schieber untergriffen werden, der den Gegenstand aus dem Stapel schiebt.The top arc can be moved linearly, in the case a rectangular object preferably obliquely its edges and to align the stop. Especially however, a rotary movement can be easily realized of the topmost object by one perpendicular to the plane of the Object rotating axis. The top item is set in motion by a separating element, the preferably in frictional or frictional engagement with the uppermost Object acts. A separating element can also be used Suction are used. Furthermore, the Trailing edge of the object with a sucker and can be gripped by a slider, the object from the stack.

Indem das Separierelement verfahrbar ist, gelingt eine Erhöhung der Taktzahl. Der oberste Bogen wird durch die Bewegung des Separierelements im Kraft- oder Reibschluss so weit bewegt, bis er vom Anschlag abspringt und gegenüber der Stapelfläche versetzt ist. Das Separierelement wird dann in seine Ausgangsposition zurückbewegt, wo es unmittelbar auf einen nun freigelegten Bereich des zweitobersten Bogens zugreift und diesen bei der erneuten Vorwärtsbewegung bewegen kann. Währenddessen wird der oberste Bogen durch geeignete Wegfördermittel aus dem Stapel gezogen. Unter "Ergreifen" wird jegliche Art der Übergabe an das Wegfördermittel verstanden, z.B. auch Ablage auf ein Förderband. Durch die Erfindung lässt sich besonders einfach eine Schuppenformation der separierten Bögen erzeugen. Das Separierelement beschreibt bevorzugt einen Teil einer Kreisbahn. Der Hub bzw. die zurückgelegte Strecke braucht nur so lang zu sein, bis die gegen den Anschlag gefahrene Kante des obersten Bogens vom Anschlag abspringt. Je nach Gestaltung des Anschlags reicht daher eine Bewegungsbahn von Bruchteilen der Bogenlänge. Die Taktfrequenz der Vorrichtung kann entsprechend erhöht werden.One can do this by moving the separating element Increase in the number of cycles. The top bow is through the Movement of the separating element in force or friction until it jumps off the stop and is offset from the stacking surface. The separating element is then moved back to its starting position where it is directly on a now exposed area of the accesses the second uppermost arch and this when Can move forward. Meanwhile, the top sheet by suitable means of transport from the Stack drawn. Under "Grab" any kind of Transfer to the means of transport understood, e.g. also Storage on a conveyor belt. The invention allows particularly simple a scale formation of the separated Create arcs. The separating element preferably describes part of a circular path. The hub or the distance traveled The route need only be as long until the against the Edge of the uppermost sheet from the stop jump off. Depending on the design of the stop, it is therefore sufficient a trajectory of fractions of the arc length. The Clock frequency of the device can be increased accordingly become.

Ausführungsformen der Erfindung sind in der Zeichnung dargestellt und nachfolgend beschrieben. Dabei zeigen rein schematisch:

Fig. 1A - 1C
Den Ablauf des erfindungsgemässen Separierverfahrens;
Fig. 2
eine erfindungsgemässe Vorrichtung in Seitenansicht;
Fig. 3
eine erfindungsgemässe Vorrichtung in Aufsicht von oben;
Fig. 4
eine erfindungsgemässe Vorrichtung in Seitenansicht mit einem an einem Anschlag ausgerichteten Papierstapel;
Fig. 5
eine erfindungsgemässe Vorrichtung in Seitenansicht mit einem gegen einen Anschlag gebogenen obersten Gegenstand;
Fig. 6A - 6C
verschiedene Ansichten eines Separierelements mit einer Rolle;
Fig. 7A - 7C
verschiedene Ansichten eines Separierelements mit einem Schuh;
Fig. 8
eine erfindungsgemässe Vorrichtung mit einer Fördereinrichtung zur Erzeugung einer Diagonalschuppenformation.
Embodiments of the invention are shown in the drawing and described below. Here show purely schematically:
1A-1C
The sequence of the separation process according to the invention;
Fig. 2
a device according to the invention in side view;
Fig. 3
a device according to the invention in top view;
Fig. 4
a device according to the invention in side view with a stack of paper aligned with a stop;
Fig. 5
a device according to the invention in side view with a top object bent against a stop;
6A-6C
different views of a separating element with a roller;
7A-7C
different views of a separating element with a shoe;
Fig. 8
an inventive device with a conveyor for generating a diagonal scale formation.

Fig. 1A-C zeigt die Durchführung des erfindungsgemässen Separierverfahrens. Ein Stapel 1 rechteckiger, flächiger Gegenstände 2, 3 befindet sich auf einer Auflagefläche 4, die seitlich durch einen Anschlag 5 begrenzt ist. Der Anschlag 5 ist als flächiger, vertikal ausgerichteter Steg ausgebildet. Die vordere Kante 2a, 3a der Gegenstände berührt die dem Stapel 1 zugewandte Vorderfläche 5a des Anschlag 5. Der Anschlag 5 erstreckt sich seitlich nur über einen Bruchteil der Vorderkante 2a, 3a der flächigen Gegenstände.1A-C shows the implementation of the inventive Separierverfahrens. A stack of 1 rectangular, flat Objects 2, 3 are located on a support surface 4, which is laterally limited by a stop 5. The Stop 5 is a flat, vertically aligned web educated. The front edge 2a, 3a of the objects touches the front face 5a of the stack 1 Stop 5. The stop 5 extends laterally only over a fraction of the front edge 2a, 3a of the flat Items.

An der dem Anschlag 5 diagonal gegenüberliegenden Ecke der Auflagefläche 4 befindet sich ein Andruckelement 7. Mit diesem wird von oben Druck auf den Stapel 1 ausgeübt, wodurch die Gegenstände 2, 3 in einer senkrecht zu ihrer Ebene verlaufenen Richtung fixiert und dadurch zusammengehalten werden. Das Andruckelement 7 wird in schwimmender Weise mit einer Haltevorrichtung 13 auf den Stapel 1 aufgelegt, was in den Figuren 2 - 4 dargestellt ist. Über einen Hebel 9 ist ein Separierelement 6 mit dem Andruckelement 7 schwenkbar verbunden, so dass das Separierelement 6 in der Weise automatisch höhenverstellt wird, dass es stets den obersten Gegenstand 2 des Stapels 1 zu bewegen imstande ist. Das Separierelement 6 wird um eine senkrecht zur Ebene der flachen Gegenstände 2, 3 durch das Andruckelement 7 verlaufende Drehachse 10 verschwenkt. Das Separierelement 6 nimmt den obersten Gegenstand 2 beim Bewegen in Richtung auf den Anschlag 5 im Kraft- bzw. Reibschluss mit. Die Situation bei dieser Vorwärtsbewegung ist in Fig. 1A gezeigt. Der oberste Gegenstand 2 dadurch gegen den Anschlag 5 bewegt und dort aufgestaucht. Bei der weiteren Vorwärtsbewegung gleitet die vordere Ecke 2b des obersten Gegenstands an der Seitenkante 5b des Anschlags vorbei. Diese Situation ist in Fig. 1B gezeigt. Das Separierelement 6 wird dann durch Zurückschwenken um die Achse 10 in seine Ausgangsposition zurückverfahren. Der aus dem Stapel geschobene oberste Gegenstand 2 kann nun an seinen vorstehenden Ecken z.B. im Bereich der Vorderkante 2a ergriffen, z.B. auf ein Förderband abgelegt werden, und wegtransportiert werden. Beim Zurückziehen des Separierelements 6 in seine Ausgangsposition wird der Kraftschluss mit dem obersten Gegenstand 2 bzw. dem darunterliegenden nun freigegebenen Gegenstand 3 gelöst. Dazu umfasst das Separierelement 6 im vorliegenden Beispiel eine Rolle 11 mit einer stark griffigen Oberfläche, die sich bei der Vorwärtsbewegung zum Anschlag hin nicht dreht und bei der Rückwärtsbewegung vom Anschlag weg auf den nun zuoberst liegende Gegenständen abrollt. Alternative Separierelemente sind i den Fig. 6A - - 6C und 7A - 7C dargestellt. Der Abstand de Separierelements 6 von der Drehachse 10 bzw. dem Andruckelement 7 ist über einen Schlitten 12 variabel. Der Schlitten 12 kann auf dem Hebel 9 verschoben werden.At the corner 5 diagonally opposite the stop Contact surface 4 is a pressure element 7. With this is exerted pressure on the stack 1 from above, whereby the objects 2, 3 in a perpendicular to their Level direction fixed and held together become. The pressure element 7 becomes floating Way with a holding device 13 on the stack 1 placed what is shown in Figures 2-4. about a lever 9 is a separating element 6 with the Pressure element 7 pivotally connected, so that The height of the separating element 6 is automatically adjusted is that it is always the top item 2 of the stack 1 is able to move. The separating element 6 is around one perpendicular to the plane of the flat objects 2, 3 axis of rotation 10 extending through the pressure element 7 pivoted. The separating element 6 takes the top one Item 2 when moving towards the stop 5 in frictional or frictional engagement with. The situation with this Forward movement is shown in Fig. 1A. The top one Object 2 thereby moved against the stop 5 and there surfaced. As it moves forward, it glides the front corner 2b of the top object on the Side edge 5b of the stop over. This situation is shown in Fig. 1B. The separating element 6 is then through Swing back about the axis 10 in its starting position moved back. The top one pushed out of the stack Item 2 can now e.g. in the Gripped area of the leading edge 2a, e.g. to a Conveyor belt are put down, and transported away. When the separating element 6 is pulled back into its The starting position is the adhesion with the top one Item 2 or the one below it is now released Item 3 solved. For this purpose, the separating element 6 comprises present example a role 11 with a strong grippy surface that moves when moving forward does not turn towards the stop and during the backward movement from the stop to the one on top Objects unrolls. Alternative separation elements are i 6A-6C and 7A-7C. The distance de Separating element 6 from the axis of rotation 10 or the Pressure element 7 is variable via a carriage 12. The Carriage 12 can be moved on the lever 9.

Mit der beschriebenen Technik lassen sich einzelne Gegenstände 2 vom Stapel entfernen. Durch periodisches Be. wegen des Separierelements 6 kann des weiteren eine Schuppenformation 8 aus gegeneinander versetzt angeordneten Gegenständen 2 erzeugt werden, was in Fig. 10 dargestellt ist.With the technique described, individual Remove items 2 from the stack. Through periodic loading. because of the separating element 6 can also be a Scale formation 8 from staggered Objects 2 are generated, which is shown in FIG. 10 is shown.

Die Fig. 2 bis 4 zeigen verschiedene Ansichten einer erfindungsgemässen Separiervorrichtung. Ein Stapel 1 flächiger Gegenstände 2, 3 befindet sich auf einer ebenen Auflagefläche 4. Der Stapel 1 wird im Bereich seiner Vorderkante 1A von einem vertikal ausgerichteten flachen Anschlag 5 begrenzt. An seiner dem Anschlag 5 schräg gegenüberliegenden Ecke 1b wird der Stapel 1 von einem Andruckelement 7 beschwert. Das Andruckelement 7, hier in Form einer Andruckkugel, ist an einer Haltevorrichtung 13 schwimmend gehaltert. Die Haltevorrichtung 13 umfasst zwei seitlich vom Stapel 1 angeordnete Säulen 13a, 13b, an denen ein Steg 13c federnd aufgehängt ist. Der Steg 13c ist in vertikaler Richtung beweglich. Das Andruckelement 7 ist über ein Halteelement 16 mit dem Steg 13c verbunden und kann zur Anpassung der Vorrichtung an unterschiedliche Abmessungen des Stapels 1 entlang des Stegs 13c verschoben werden. Des weiteren ist das Andruckelement auch noch um eine parallel zu den Säulen 13a, 13b verlaufende Achse 17 verschwenkbar. Im Betrieb ist das Andruckelement 7 starr mit dem Steg 13c verbunden. Über die Höhe des Stegs 13c ist daher die Höhe des Stapels 1 ermittelbar. Ein Separierelement 6 ist über einen Hebel 9 mit dem Andruckelement 7 verbunden. Es ist um eine senkrecht zur Auflagefläche 4 durch das Andruckelement 7 verlaufende Drehachse 10 verschwenkbar. Durch die dargestellte Konstruktion ist sichergestellt, dass das Andruckelement stets auf dem Stapel 1 aufliegt. Mittels eines geeigneten Antriebs wird das Separierelement 6 um die Drehachse 10 in Richtung auf den Anschlag 5 gedreht, um den obersten Gegenstand 2 zunächst mit seiner vorderen Kante 2a gegen den Anschlag 5 und schliesslich seitlich daran vorbei zu drücken. Die separierten Produkte sind schräg zum Stapel 1 ausgerichtet und werden in einer Schuppenformation 8 von einer Fördereinrichtung 18 wegtransportiert. Die Fördereinrichtung 18 kann ein Bandförderer oder ein Greifertransporteur sein. Alternativ zur Schuppenformation 8 können Gegenstände 2 auch einzeln vom Stapel abgezogen und weiterverarbeitet werden. Mit einer parallel zur Ausrichtung des Stapels 1 orientierten Fördereinrichtung 18' kann eine Diagonalschuppenformation 8' erzeugt werden, bei der einzelne Gegenstände einander in zwei Richtungen gegeneinander versetzt überlappen. Die Erzeugung einer solchen Diagonalschuppenformation ist in Figur 8 dargestellt.2 to 4 show different views of a separating device according to the invention. A stack 1 flat objects 2, 3 is on a level Contact surface 4. The stack 1 is in the area of its Front edge 1A of a vertically aligned flat Stop 5 limited. At its 5 stop at an angle opposite corner 1b is the stack 1 of one Pressure element 7 weighed down. The pressure element 7, here in Shape of a pressure ball is on a holding device 13 held floating. The holding device 13 comprises two Columns 13a, 13b arranged laterally from the stack 1 which a web 13c is resiliently suspended. The web 13c is movable in the vertical direction. The pressure element 7 is connected to the web 13c via a holding element 16 and can be used to adapt the device to different Dimensions of the stack 1 shifted along the web 13c become. Furthermore, the pressure element is also over an axis 17 running parallel to the columns 13a, 13b pivotable. In operation, the pressure element 7 is rigid connected to the web 13c. About the height of the web 13c the height of the stack 1 can therefore be determined. On Separating element 6 is via a lever 9 with the pressure element 7 connected. It is a perpendicular to the support surface 4 through the pressure element 7 axis of rotation 10 swiveling. Due to the construction shown ensures that the pressure element is always on the Stack 1 rests. Using a suitable drive the separating element 6 in the direction of the axis of rotation 10 the stop 5 rotated to the top object 2 first with its front edge 2a against the stop 5 and finally push past it sideways. The separated products are aligned at an angle to stack 1 and are in a scale formation 8 of one Conveyor 18 transported away. The conveyor 18 can be a belt conveyor or a gripper conveyor his. As an alternative to scale formation 8, objects can be 2 also individually removed from the stack and processed become. With a parallel to the orientation of the Stack 1 oriented conveyor 18 'can Diagonal scale formation 8 'are generated, in which individual objects face each other in two directions overlap offset from each other. The generation of a such a diagonal scale formation is shown in FIG. 8 shown.

Fig. 5 zeigt schematisch eine Momentaufnahme des Stapels 1, dessen oberster Gegenstand 2 vom Separierelement 6 gegen den Anschlag 5 bewegt wird. Die Vorderkante 2a des obersten Gegenstandes 2 stösst gegen den Anschlag 5, so dass sich der oberste Gegenstand 2 im Bereich seiner dem Anschlag zugewandten Ecke 2b aufwölbt. Beim Weiterbewegen des obersten Gegenstands 2 mit einer Bewegungskomponente quer zur Ausrichtung des Anschlags 5 wird der oberste Gegenstand schliesslich soweit verbogen, dass er seitlich am Anschlag 5 vorbeigleitet, siehe auch Fig. 1b. Das Separierelement kann dann wieder in die Ausgangsposition, die in Fig. 4 gezeigt ist, zurückbewegt werden.5 schematically shows a snapshot of the stack 1, the uppermost object 2 of the separating element 6 is moved against the stop 5. The front edge 2a of the uppermost object 2 hits the stop 5, so that the top object 2 is in the area of its Bulge facing corner 2b. When moving on of the top object 2 with a movement component transverse to the orientation of the stop 5 is the top Finally bent the object so far that it is sideways glides past the stop 5, see also FIG. 1b. The The separating element can then be returned to the starting position, which is shown in Fig. 4 can be moved back.

Die Fig. 6A-6C und 7A-7C zeigen zwei verschiedene Separierelemente in jeweils zwei Seitenansichten bzw. in der Ansicht von oben. Das Separierelement 6 gemäss Fig. 6A bis 6C umfasst eine Rolle 11, die an einem Halteelement 19 um eine parallel zur Rollenachse verlaufende Schwenkachse 14 schwenkbar gelagert ist. Die Rolle 11 weist einen haftenden Belag auf. Das Separierelement 6 hat eine Rücklaufsperre, so dass die Rolle 11 beim Bewegen aus der Ausgangsposition in Richtung auf den Anschlag 5 blockiert und so den obersten Gegenstand dem Kraft- bzw. Reibschluss gegen den Anschlag schiebt. Beim Zurückbewegen in die Ausgangsposition rollt die Rolle auf dem nunmehr obersten Gegenstand reibungsarm ab. Das Separierelement 6' gemäss Fig. 7A - 7C umfasst eine Daumenklemmsperre 15, die an einem Halteelement 19' um eine Achse 16 schwenkbar angeordnet ist. Die Daumenklemmsperre 15 weist einen haftenden Belag auf, der beim Vorwärtsbewegen des Separierelements 6' den obersten Gegenstand 2 im Reibschluss mitbewegt. Beim Zurückziehen des Separierelements 6' wird die Daumenklemmsperre 15 so verschwenkt, dass ein nichthaftender Bereich oder eine eingebaute Rolle möglichst reibungsarm über den nunmehr obersten Gegenstand gleitet oder abrollt.Figures 6A-6C and 7A-7C show two different ones Separating elements in two side views or in the top view. The separating element 6 according to FIG. 6A 6C includes a roller 11 which is attached to a holding element 19 about a pivot axis running parallel to the roller axis 14 is pivotally mounted. The roller 11 has one sticking coating. The separating element 6 has one Backstop, so that the roller 11 when moving out of the Starting position blocked in the direction of the stop 5 and so the top item is the frictional or frictional connection pushes against the stop. When moving back to the Starting position rolls the roll on the top one Object with low friction. The separating element 6 'according to 7A-7C includes a thumb clamp 15 which is on a holding element 19 'pivotable about an axis 16 is arranged. The thumb clamp 15 has one sticking coating, which when moving the Separating element 6 'the top object 2 in Friction also moves. When pulling back the separating element 6 ', the thumb clamp lock 15 is pivoted so that that a non-stick area or a built-in role as little friction as possible over the top item slides or rolls.

Claims (14)

  1. A method for dismantling a stack (1) of flat objects (2, 3) piece by piece, the top object (2) of the stack (1) being moved in its plane against a stop (5), at least in the region of one of its corners (2b), by means of a forcible or frictional connection by a separating element (6, 6') and, as a result of further movement bent in such a way that it escapes from the stop (5), and is moved out of the stack (1), gripped at its freed edge and removed from the stack, characterized in that the top object (2) of the stack (1) is rotated against the stop (5) about an axis of rotation (10) running substantially perpendicular to its plane, and is moved out of the stack (1) and that the separating element (6, 6') is pivotable about the axis of rotation (10).
  2. The method as claimed in claim 1, wherein the forcible or frictional connection is released while or before the freed edge is gripped, and the separating element (6, 6') is then moved back into its initial position.
  3. The method as claimed in one of the preceding claims, wherein there is exerted on the stack (1) a pressure directed substantially perpendicular to its plane.
  4. The method as claimed in one of claims 1 - 3, wherein the axis of rotation (10) of the rotational movement of the top object (2) lies within its outline, pressure preferably being exerted on the stack (1) in the direction of the axis of rotation.
  5. The method as claimed in one of the preceeding claims, wherein the stop (5) is located in the region of that corner (2b) of the top object (2) or the stack (1) which is at the greatest distance from the axis of rotation (10).
  6. The method as claimed in one of the preceeding claims, wherein the top object (2) is rotated by a separating element (6, 6') which can be pivoted about the axis of rotation (10) and which acts on the top object (2), preferably in the region of the edge of the latter opposite the stop (5).
  7. An apparatus for dismantling a stack (1) of flat objects (2, 3) piece by piece, having a supporting surface (4) for the stack (1) and a separating element (6, 6') which is capable of moving at least the top object (2) in its plane in a forcible or frictional connection, and having a stop (5) which is located at the side of the stack (1) and against which the top object (2) is moved by the separating element (6, 6'), characterized in that the separating element (6, 6') can be moved in a plane running parallel to the supporting surface (4), can be pivoted about an axis of rotation (10) running substantially perpendicular to the supporting surface (4), and is capable of rotating at least the top object (2) about the axis of rotation (10) .
  8. The apparatus as claimed in claim 7, wherein the separating element (6, 6') is vertically adjustable, its height being matched to the instantaneous stack height in such a way that it is always capable of moving the top object (2).
  9. The apparatus as claimed in claim 7 or 8, wherein the separating element (6, 6') comprises a roller (11) with a backstop, a thumb stop (15) or a sucker.
  10. The apparatus as claimed in one of claims 7 to 9, which comprises a pressure element (7) which is capable of exerting pressure on the stack (1) substantially perpendicular to its plane, the top object (2) preferably being rotated about an axis of rotation running through the pressure element (7).
  11. The apparatus as claimed in claim 10, wherein the pressure element rests on the top object, so that the height of the stack (1) can be determined by means of the pressure element (7).
  12. The apparatus as claimed in claim 10 or 11, wherein the pressure element (7) is connected to the separating element (6, 6') via a lever (9), so that the separating element (6, 6') is always located at the height of the top object (2) of the stack (1) and is capable of moving the latter.
  13. The apparatus as claimed in one of claims 7 to 12 wherein the stop (5) is arranged in the region of that corner of the stack (1) which is at the greatest distance from the axis of rotation (10).
  14. The apparatus as claimed in one of claims 7 to 13, wherein the stop (5) is aligned perpendicular to the plane of the objects (2, 3) and extends from the supporting surface (4) up to a height which is greater than the height of the stack (1).
EP02001290A 2001-02-15 2002-01-18 Method and device for individually separating flat objects from a pile Expired - Lifetime EP1232977B1 (en)

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CH2662001 2001-02-15
CH2662001 2001-02-15

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US (1) US6682064B2 (en)
EP (1) EP1232977B1 (en)
AT (1) ATE270646T1 (en)
AU (1) AU1552702A (en)
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DE4136194A1 (en) 1991-11-02 1993-05-06 Kba-Planeta Ag, O-8122 Radebeul, De Sheet feed for printing machines - moves separated sheet inclined to conveyor direction and front edge onto table
JPH06135576A (en) * 1992-10-22 1994-05-17 Fuji Xerox Co Ltd Paper feeder of image former
DE19642485A1 (en) * 1996-10-15 1998-04-16 Heidelberger Druckmasch Ag Printing machine with sheet feed
JP3022386B2 (en) * 1997-03-25 2000-03-21 株式会社スーパープランニング A case for taking out a set of paper sheets with a paper sheet take-out device
US5984295A (en) * 1997-09-05 1999-11-16 Primera Technology, Inc. Paper tray with single sheet feeder

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DE50200583D1 (en) 2004-08-12
AU1552702A (en) 2002-08-22
US20020109284A1 (en) 2002-08-15
CA2370933A1 (en) 2002-08-15
ATE270646T1 (en) 2004-07-15
US6682064B2 (en) 2004-01-27
EP1232977A1 (en) 2002-08-21

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