EP0987203B1 - Device for replenishing the reserve of a pile receiver - Google Patents

Device for replenishing the reserve of a pile receiver Download PDF

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Publication number
EP0987203B1
EP0987203B1 EP99117507A EP99117507A EP0987203B1 EP 0987203 B1 EP0987203 B1 EP 0987203B1 EP 99117507 A EP99117507 A EP 99117507A EP 99117507 A EP99117507 A EP 99117507A EP 0987203 B1 EP0987203 B1 EP 0987203B1
Authority
EP
European Patent Office
Prior art keywords
stack
gripper
residual
movable
stacking
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
EP99117507A
Other languages
German (de)
French (fr)
Other versions
EP0987203A3 (en
EP0987203A2 (en
Inventor
Michael Kleine Wächter
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.)
Topack Verpackungstechnik GmbH
Original Assignee
Topack Verpackungstechnik GmbH
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Filing date
Publication date
Application filed by Topack Verpackungstechnik GmbH filed Critical Topack Verpackungstechnik GmbH
Publication of EP0987203A2 publication Critical patent/EP0987203A2/en
Publication of EP0987203A3 publication Critical patent/EP0987203A3/en
Application granted granted Critical
Publication of EP0987203B1 publication Critical patent/EP0987203B1/en
Anticipated expiration legal-status Critical
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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
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/30—Supports or magazines for piles from which articles are to be separated with means for replenishing the pile during continuous separation of articles therefrom
    • 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
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B65H2301/4224—Gripping piles, sets or stacks of articles
    • 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
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B65H2301/4226—Delivering, advancing piles
    • B65H2301/42261—Delivering, advancing piles by dropping
    • 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
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/50—Gripping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/50—Gripping means
    • B65H2405/58—Means for achieving gripping/releasing operation
    • B65H2405/584—Associated control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/15—Height, e.g. of stack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/22—Distance

Definitions

  • the invention relates to a device for supplementing the supply of a stack magazine with sheet-shaped packaging blanks, with one between one Provision position and the stacking magazine can be moved back and forth as well as relatively to the stacking magazine vertically movable stacking gripper.
  • Such stacking magazines are usually located directly on packaging machines, for example Cigarette packing machines, arranged.
  • packaging blanks in the form of so-called blankets stored, which consist of relatively stiff sheet material and for the purpose of recording of cigarettes to form hard-cigarette packs, so-called Hinged lid packs, serve. They are stamped on the corresponding folded edges, Make cuts or cut-outs.
  • the blankets are periodically removed from the stack at the bottom of the magazine, whereby perfect separation of adjacent blank sheets for single sheet removal is essential to rule out machine malfunctions.
  • a device of the type described at the outset is disclosed in DE 40 24 451 A, according to which a packaging machine magazine with a through a fork loaded blank stack is loaded.
  • a residual stack located in the magazine is removed by means of one of a supplementary stack of cardboard blanks on top and bottom side Pliers grab replenished.
  • the invention has for its object constant conditions in the Create magazines of packaging blanks.
  • the stack gripper is assigned a monitoring means which detects the stack height of a remaining stack in the stack magazine and triggers a gripper opening of the stack gripper for the free fall of a supplementary stack, which is arranged to determine a defined vertical distance between the underside of the supplementary stack and the top of the remainder stack ,
  • a functionally reliable configuration consists in that the monitoring means is designed as a spring-loaded touch-down button, which cooperates with a proximity initiator and which is expediently arranged in a height-adjustable manner in a holding bar of the gripper, whereby according to a preferred development, the proximity switch connected to a guide rod of the touch-down button is relative to one sensor stop attached to the retaining bar is movable.
  • the monitoring means is designed as a light barrier which scans the upper edge of the remaining stack, which also automatically triggers the dropping of the supplementary stack after the signal is given.
  • the height-adjustable stack gripper be assigned a proximity initiator that monitors the vertical stroke within the stack magazine and that reduces a defined search range for a calculated fluctuation range of the top edge position of the remaining stack Lowering speed is arranged to trigger. This ensures high accuracy in a defined search area, while the stack gripper can be operated at relatively high speeds in the remaining movement space.
  • the radius of action of the stack gripper can thereby be optimized so that the one interacting with a provision position Stack gripper is arranged transversely movable between two stacking magazines.
  • the advantage achieved with the invention is that the supplementary stack always from a constant defined and minimizable drop height relative released to the rest of the stack by the stack gripper, so that as a result of the reduced Falling weight an excessive pressure load and marking of the bottom blanks of the remaining stack is prevented. Trouble-free cutting is thus guaranteed in the long run.
  • a stack gripper 1 is not part of a portal 2, which does not contain a stack gripper 1 with a stacking gripper 1 in the direction of the double arrow 3 between a preparation position 4 for an additional stack 6 of packaging blanks in the form of blank 7 and residual stack 8 of blank 7
  • Stack magazines 9 shown in detail along a longitudinal guide 11 reciprocating longitudinal lifting device 12 is provided.
  • the portal 2 is also equipped with two vertical lifting devices 16 which raise or lower the stacking gripper 1 in the direction of the double arrow 13 along a double-sided vertical guide 14, and with one cross lifting device 19 which moves the stacking gripper 1 between two stacking magazines 9 in the direction of the double arrow 17 along a transverse guide 18 .
  • Units of the type DGPL-PPV-A-KF from FESTO are used, for example, as longitudinal stroke, vertical stroke and transverse stroke devices which are not shown in further detail, preferably as pneumatic rodless linear drives with recirculating ball guides.
  • the stack gripper 1 has two opposite holding strips 21 which support an additional stack 6 and which can be moved into an opening position in the direction of the arrows 23 by the holding strip drive means 22.
  • One of the holding strips 21 is assigned a monitoring means 24 in the form of a touch button 26.
  • the placement button 26 is arranged against a slight bias of a spring 27 by means of a guide rod 28 in the holding bar 21 so as to be vertically displaceable.
  • the pushbutton 26 interacts with a proximity initiator 29, which is connected to the guide rod 28 and is movable relative to a sensor stop 31 attached to the retaining bar 21.
  • Another proximity initiator 32 is assigned to the vertical lifting device 16.
  • the device works as follows:
  • the stack gripper 1 receives a signal Supplementing the respective remaining stack 8.
  • the stack gripper 1 takes the in the ready position 4 located supplementary stack 6 and transfers it quickly into a position over the remaining stack 8 of the respective stack magazine 9, the Stack height in the meantime within a search area labeled S. may have dropped further.
  • the search area S is reached According to FIG. 4, the one that responds in the downward stroke 13 of the stack gripper 1 switches Proximity initiator 32 the vertical lifting device 16 to a lower search speed around.
  • the touchdown button 26 contacts this search speed the surface of the one that has dropped to the actual current residual stack height Remaining stack 8 according to Figure 5 and is relative to the retaining bar 21 against the spring force moves upwards so that the proximity initiator 29 moves away from the sensor stop 31 releases.
  • the proximity initiator 29 activates the tether drive means 22 for opening the stacking gripper 1, the holding strips 21 according to FIG. 6 in Move apart in the direction of the arrows 23 and release the supplementary stack 6, which falls on the remaining stack 8 from a relatively low drop height.
  • FIGS. 7 and 8 elements which correspond to those of the arrangement described above are provided with reference numbers increased by a hundred and are not explained again in particular.
  • This variant differs only in the monitoring means 124, which consists of a light barrier 133, 134 which scans the upper edge of the remaining stack 108 and which activates the holding strip drive means 122 to open the gripper by means of appropriate signaling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Pile Receivers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Beans For Foods Or Fodder (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fuel Cell (AREA)

Abstract

The device includes a stacking grip (1) with a monitoring device (24) which monitors the stack height of the residual stack (8) during lowering, which can release an aperture in the grip. The monitoring device may maintain a defined vertical spacing between the underside of a topping-up stack (6) and the top of the residual stack.

Description

Die Erfindung betrifft eine Vorrichtung zum Ergänzen des Vorrats eines Stapelmagazins mit blattförmigen Verpackungszuschnitten, mit einem zwischen einer Bereitstellungsposition und dem Stapelmagazin hin und her verfahrbaren sowie relativ zum Stapelmagazin höhenverfahrbaren Stapelgreifer.The invention relates to a device for supplementing the supply of a stack magazine with sheet-shaped packaging blanks, with one between one Provision position and the stacking magazine can be moved back and forth as well as relatively to the stacking magazine vertically movable stacking gripper.

Derartige Stapelmagazine sind üblicherweise unmittelbar an Packmaschinen, beispielsweise Zigarettenpackmaschinen, angeordnet. In einem derartigen Magazin werden zum Beispiel Verpackungszuschnitte in Form von sogenannten Blanketts gespeichert, die aus relativ steifem Blattmaterial bestehen und zwecks Aufnahme von Zigaretten zur Formung von Zigaretten-Hartbecherpackungen, sogenannte Hinged-Lid-Packungen, dienen. Sie sind an entsprechenden Faltkanten mit Vorprägungen, Einschnitten oder Ausstanzungen versehen. Die Blanketts werden taktweise einzeln an der Unterseite des Magazins vom Stapel abgenommen, wobei für die Einzelblattentnahme eine einwandfreie Trennung angrenzender Blanketts unabdingbar ist, um Maschinenstörungen auszuschließen.Such stacking magazines are usually located directly on packaging machines, for example Cigarette packing machines, arranged. In such a magazine packaging blanks in the form of so-called blankets stored, which consist of relatively stiff sheet material and for the purpose of recording of cigarettes to form hard-cigarette packs, so-called Hinged lid packs, serve. They are stamped on the corresponding folded edges, Make cuts or cut-outs. The blankets are periodically removed from the stack at the bottom of the magazine, whereby perfect separation of adjacent blank sheets for single sheet removal is essential to rule out machine malfunctions.

Eine Vorrichtung der eingangs bezeichneten Gattung ist in der DE 40 24 451 A offenbart, gemäß der ein Packmaschinenmagazin mit einem durch eine Gabel getragenen Blankettstapel beschickt wird.A device of the type described at the outset is disclosed in DE 40 24 451 A, according to which a packaging machine magazine with a through a fork loaded blank stack is loaded.

Gemäß der WO 97 08 085 A wird ein im Magazin befindlicher Reststapel mittels eines einen Ergänzungsstapel aus Kartonzuschnitten ober- und unterseitig erfassenden Zangengreifers aufgefüllt.According to WO 97 08 085 A, a residual stack located in the magazine is removed by means of one of a supplementary stack of cardboard blanks on top and bottom side Pliers grab replenished.

Unter bestimmten Produktionsbedingungen, insbesondere bei Magazinen mit Doppelschächten für zweibahnige Packmaschinen, in denen eine Nachfüllung bei unterschiedlichen Reststapelhöhen mittels eines einzigen zugeordneten Überführungsgerätes erfolgt, können Unregelmäßigkeiten bei der Stapelbildung auftreten.Under certain production conditions, especially with magazines Double shafts for two-lane packaging machines, in which a refill different residual stack heights by means of a single assigned transfer device irregularities in stack formation can occur.

Der Erfindung liegt die Aufgabe zugrunde, konstante Voraussetzungen bei der Magazinierung von Verpackungszuschnitten zu schaffen.The invention has for its object constant conditions in the Create magazines of packaging blanks.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass dem Stapelgreifer ein die Stapelhöhe eines Reststapels im Stapelmagazin erfassendes, eine Greiferöffnung des Stapelgreifers zum freien Fall eines Ergänzungsstapels auslösendes Überwachungsmittel zugeordnet ist, welches einen definierten Vertikalabstand zwischen der Unterseite des Ergänzungsstapels und der Oberseite des Reststapels bestimmend angeordnet ist.
Eine funktionssichere Ausgestaltung besteht darin, dass das Überwachungsmittel als den Reststapel federelastisch beaufschlagender, mit einem Näherungsinitiator zusammenwirkender Aufsetztaster ausgebildet ist, der zweckmäßigerweise höhenverschiebbar in einer Halteleiste des Greifers angeordnet ist, wobei gemäß einer bevorzugten Weiterbildung der mit einer Führungsstange des Aufsetztasters verbundene Näherungsinitiator relativ zu einem an der Halteleiste befestigten Sensoranschlag bewegbar ist.
Gemäß einer vorgeschlagenen abgewandelten Ausführungsform ist das Überwachungsmittel als die Oberkante des Reststapels abtastende Lichtschranke ausgebildet, welche ebenfalls nach Signalgabe automatisch den Abwurf des Ergänzungsstapels auslöst.
Um einen möglichst effektiven, zeitlich optimierten Bewegungsablauf des Stapelgreifers innerhalb seines Wirkungsbereichs zu erzielen, wird außerdem vorgeschlagen, dass dem höhenverfahrbaren Stapelgreifer ein den Vertikalhub innerhalb des Stapelmagazins überwachender Näherungsinitiator zugeordnet ist, welcher eine einen definierten Suchbereich für eine kalkulierte Schwankungsbreite der Oberkantenlage des Reststapels abdeckende verminderte Absenkgeschwindigkeit auslösend angeordnet ist. Auf diese Weise ist eine hohe Genauigkeit in einem definierten Suchbereich gewährleistet, während der Stapelgreifer im übrigen Bewegungsraum mit relativ hohen Geschwindigkeiten betrieben werden kann.This object is achieved in that the stack gripper is assigned a monitoring means which detects the stack height of a remaining stack in the stack magazine and triggers a gripper opening of the stack gripper for the free fall of a supplementary stack, which is arranged to determine a defined vertical distance between the underside of the supplementary stack and the top of the remainder stack ,
A functionally reliable configuration consists in that the monitoring means is designed as a spring-loaded touch-down button, which cooperates with a proximity initiator and which is expediently arranged in a height-adjustable manner in a holding bar of the gripper, whereby according to a preferred development, the proximity switch connected to a guide rod of the touch-down button is relative to one sensor stop attached to the retaining bar is movable.
According to a proposed modified embodiment, the monitoring means is designed as a light barrier which scans the upper edge of the remaining stack, which also automatically triggers the dropping of the supplementary stack after the signal is given.
In order to achieve the most effective, time-optimized movement of the stack gripper within its effective range, it is also proposed that the height-adjustable stack gripper be assigned a proximity initiator that monitors the vertical stroke within the stack magazine and that reduces a defined search range for a calculated fluctuation range of the top edge position of the remaining stack Lowering speed is arranged to trigger. This ensures high accuracy in a defined search area, while the stack gripper can be operated at relatively high speeds in the remaining movement space.

Der Aktionsradius des Stapelgreifers kann gemäß einer Weiterbildung dadurch optimiert werden, dass der mit einer Bereitstellungsposition zusammenwirkende Stapelgreifer zwischen zwei Stapelmagazinen quer verfahrbar angeordnet ist.According to a further development, the radius of action of the stack gripper can thereby be optimized so that the one interacting with a provision position Stack gripper is arranged transversely movable between two stacking magazines.

Der mit der Erfindung erzielte Vorteil besteht darin, dass der Ergänzungsstapel immer aus einer gleichbleibenden definierten sowie minimierbaren Fallhöhe relativ zum Reststapel vom Stapelgreifer freigegeben wird, so dass infolge des reduzierten Fallgewichts eine übermäßige Druckbelastung und Markierung der untersten Zuschnitte des Reststapels verhindert wird. Eine störungsfreie Zuschnittentnahme ist somit auf Dauer gewährleistet. The advantage achieved with the invention is that the supplementary stack always from a constant defined and minimizable drop height relative released to the rest of the stack by the stack gripper, so that as a result of the reduced Falling weight an excessive pressure load and marking of the bottom blanks of the remaining stack is prevented. Trouble-free cutting is thus guaranteed in the long run.

Die Erfindung wird nachfolgend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert.The invention is described below with reference to exemplary embodiments shown in the drawing explained in more detail.

Hierbei zeigen:

Figur 1
einen als Portalgreifer ausgebildeten Stapelgreifer in der Seitenansicht,
Figur 2
eine Draufsicht auf den Stapelgreifer,
Figur 3
eine Frontansicht des Stapelgreifers in Richtung des Pfeils X gemäß Figur 1,
Figuren 4 bis 6
unterschiedliche Arbeitsstellungen des Stapelgreifers im Bereich eines Stapelmagazins,
Figur 7
eine alternative Ausführungsform des Stapelgreifers und
Figur 8
eine Draufsicht auf den Stapelgreifer mit eingelegten Verpackungszuschnitten gemäß Figur 7.
Here show:
Figure 1
a side view of a stack gripper designed as a portal gripper,
Figure 2
a top view of the stack gripper,
Figure 3
2 shows a front view of the stack gripper in the direction of arrow X according to FIG. 1,
Figures 4 to 6
different working positions of the stack gripper in the area of a stack magazine,
Figure 7
an alternative embodiment of the stack gripper and
Figure 8
a plan view of the stack gripper with inserted packaging blanks according to Figure 7.

Gemäß den Figuren 1 bis 3 ist ein Stapelgreifer 1 Bestandteil eines Portals 2, welches mit einer den Stapelgreifer 1 in Richtung des Doppelpfeils 3 zwischen einer Bereitstellungsposition 4 für einen Ergänzungsstapel 6 aus Verpackungszuschnitten in Form von Blanketts 7 und Reststapel 8 aus Blanketts 7 enthaltenden, nicht näher dargestellten Stapelmagazinen 9 entlang einer Längsführung 11 hin- und herfahrenden Längshubeinrichtung 12 versehen ist.
Das Portal 2 ist darüber hinaus mit zwei den Stapelgreifer 1 in Richtung des Doppelpfeils 13 entlang einer doppelseitigen Vertikalführung 14 anhebenden bzw. absenkenden Vertikalhubeinrichtungen 16 sowie mit einer den Stapelgreifer 1 zwischen zwei Stapelmagazinen 9 in Richtung des Doppelpfeils 17 entlang einer Querführung 18 verfahrenden Querhubeinrichtung 19 ausgestattet.
Als in Einzelheiten nicht weiter dargestellte, vorzugsweise als pneumatische kolbenstangenlose Linearantriebe mit Kugelumlaufführungen ausgebildete Längshub-, Vertikalhub- und Querhubeinrichtungen kommen beispielsweise Aggregate des Typs DGPL-PPV-A-KF der Firma FESTO zum Einsatz.
Der Stapelgreifer 1 weist zwei gegenüberliegende, einen Ergänzungsstapel 6 abstützende Halteleisten 21 auf, welche durch Halteleistenantriebsmittel 22 in eine Öffnungsstellung in Richtung der Pfeile 23 bewegbar sind.
Einer der Halteleisten 21 ist ein Überwachungsmittel 24 in Form eines Aufsetztasters 26 zugeordnet. Der Aufsetztaster 26 ist gegen eine leichte Vorspannung einer Feder 27 mittels einer Führungsstange 28 höhenverschiebbar in der Halteleiste 21 angeordnet.
Der Aufsetztaster 26 wirkt mit einem Näherungsinitiator 29 zusammen, welcher mit der Führungsstange 28 verbunden ist und relativ zu einem an der Halteleiste 21 befestigten Sensoranschlag 31 bewegbar ist.
Ein weiterer Näherungsinitiator 32 ist der Vertikalhubeinrichtung 16 zugeordnet.According to FIGS. 1 to 3, a stack gripper 1 is not part of a portal 2, which does not contain a stack gripper 1 with a stacking gripper 1 in the direction of the double arrow 3 between a preparation position 4 for an additional stack 6 of packaging blanks in the form of blank 7 and residual stack 8 of blank 7 Stack magazines 9 shown in detail along a longitudinal guide 11 reciprocating longitudinal lifting device 12 is provided.
The portal 2 is also equipped with two vertical lifting devices 16 which raise or lower the stacking gripper 1 in the direction of the double arrow 13 along a double-sided vertical guide 14, and with one cross lifting device 19 which moves the stacking gripper 1 between two stacking magazines 9 in the direction of the double arrow 17 along a transverse guide 18 ,
Units of the type DGPL-PPV-A-KF from FESTO are used, for example, as longitudinal stroke, vertical stroke and transverse stroke devices which are not shown in further detail, preferably as pneumatic rodless linear drives with recirculating ball guides.
The stack gripper 1 has two opposite holding strips 21 which support an additional stack 6 and which can be moved into an opening position in the direction of the arrows 23 by the holding strip drive means 22.
One of the holding strips 21 is assigned a monitoring means 24 in the form of a touch button 26. The placement button 26 is arranged against a slight bias of a spring 27 by means of a guide rod 28 in the holding bar 21 so as to be vertically displaceable.
The pushbutton 26 interacts with a proximity initiator 29, which is connected to the guide rod 28 and is movable relative to a sensor stop 31 attached to the retaining bar 21.
Another proximity initiator 32 is assigned to the vertical lifting device 16.

Die Wirkungsweise der Vorrichtung ist wie folgt: The device works as follows:

Sobald ein Reststapel 8 in wenigstens einem der beiden Stapelmagazine 9 auf eine bestimmte Mindesthöhe abgesunken ist, erhält der Stapelgreifer 1 ein Signal zur Ergänzung des jeweiligen Reststapels 8. Der Stapelgreifer 1 nimmt den in der Bereitstellungsposition 4 befindlichen Ergänzungsstapel 6 auf und überführt ihn zügig in eine Position über den Reststapel 8 des jeweiligen Stapelmagazins 9, dessen Stapelhöhe zwischenzeitlich innerhalb eines mit S bezeichneten Suchbereichs weiter abgesunken sein kann. Innerhalb bzw. bei Erreichen dieses Suchbereichs S gemäß Figur 4 schaltet der beim Abwärtshub 13 des Stapelgreifers 1 ansprechende Näherungsinitiator 32 die Vertikalhubeinrichtung 16 auf eine niedrigere Suchgeschwindigkeit um. Mit dieser Suchgeschwindigkeit kontaktiert der Aufsetztaster 26 die Oberfläche des auf die tatsächliche momentane Reststapelhöhe abgesunkenen Reststapels 8 gemäß Figur 5 und wird relativ zur Halteleiste 21 gegen die Federkraft aufwärtsbewegt, so daß sich der Näherungsinitiator 29 vom Sensoranschlag 31 löst. Bei diesem erreichten Minimalabstand zwischen dem Ergänzungsstapel 6 und dem Reststapel 8 aktiviert der Näherungsinitiator 29 die Halteleistenantriebsmittel 22 zur Öffnung des Stapelgreifers 1, dessen Halteleisten 21 gemäß Figur 6 in Richtung der Pfeile 23 auseinanderfahren und den Ergänzungsstapel 6 freigeben, welcher aus einer relativ geringen Fallhöhe auf den Reststapel 8 herunterfällt.As soon as a remaining stack 8 in at least one of the two stacking magazines 9 on one certain minimum height has dropped, the stack gripper 1 receives a signal Supplementing the respective remaining stack 8. The stack gripper 1 takes the in the ready position 4 located supplementary stack 6 and transfers it quickly into a position over the remaining stack 8 of the respective stack magazine 9, the Stack height in the meantime within a search area labeled S. may have dropped further. Within or when this search area S is reached According to FIG. 4, the one that responds in the downward stroke 13 of the stack gripper 1 switches Proximity initiator 32 the vertical lifting device 16 to a lower search speed around. The touchdown button 26 contacts this search speed the surface of the one that has dropped to the actual current residual stack height Remaining stack 8 according to Figure 5 and is relative to the retaining bar 21 against the spring force moves upwards so that the proximity initiator 29 moves away from the sensor stop 31 releases. At this minimum distance between the supplementary stack 6 and the remainder stack 8, the proximity initiator 29 activates the tether drive means 22 for opening the stacking gripper 1, the holding strips 21 according to FIG. 6 in Move apart in the direction of the arrows 23 and release the supplementary stack 6, which falls on the remaining stack 8 from a relatively low drop height.

Auf gleiche Weise wird der inzwischen innerhalb des Suchbereichs S auf eine unbestimmte Reststapelhöhe abgesunkene zweite Reststapel 8 aus einer definierten Fallhöhe heraus ergänzt.In the same way, the meanwhile within the search area S becomes indefinite Residual stack height dropped second residual stack 8 from a defined Fall height added.

Bei dem in den Figuren 7 und 8 dargestellten alternativen Ausführungsbeispiel sind Elemente, die denen der zuvor beschriebenen Anordnung entsprechen, mit um hundert erhöhten Bezugszahlen versehen und nicht noch einmal besonders erläutert.
Diese Variante unterscheidet sich lediglich durch das Überwachungsmittel 124, welches aus einer die Oberkante des Reststapels 108 abtastenden Lichtschranke 133, 134 besteht, welche durch entsprechende Signalgabe die Halteleistenantriebsmittel 122 zur Greiferöffnung aktiviert.In the alternative exemplary embodiment shown in FIGS. 7 and 8, elements which correspond to those of the arrangement described above are provided with reference numbers increased by a hundred and are not explained again in particular.
This variant differs only in the monitoring means 124, which consists of a light barrier 133, 134 which scans the upper edge of the remaining stack 108 and which activates the holding strip drive means 122 to open the gripper by means of appropriate signaling.

Claims (7)

  1. A device for completing the reserve of a stacking magazine with leaf-shaped packaging blanks, with a stack gripper which is movable in a reciprocating manner between a holding-ready position and the stacking magazine and which is movable vertically relative to the stacking magazine, characterized in that a monitoring means (24; 124), which detects the height of a residual stack (8; 108) in the stacking magazine (9; 109) and initiates an opening of the stack gripper (1; 101) and which is arranged so as to determine a defined vertical distance between the underside of the completing stack (6; 106) and the top of the residual stack (8; 108), is arranged on the stack gripper.
  2. A device according to Claim 1, characterized in that the monitoring means (24) is constructed in the form of an attachable sensor (26) acting upon the residual stack (8) in a resilient manner and co-operating with an approximation initiator (29).
  3. A device according to Claim 2, characterized in that the attachable sensor (26) is arranged so as to be vertically displaceable in a holding strip (21) of the stack gripper (1).
  4. A device according to Claim 2 or 3, characterized in that the approximation initiator (29) connected to a guide rod (28) of the attachable sensor (26) is movable relative to a sensor stop (31) secured to the holding strip (21).
  5. A device according to Claim 1, characterized in that the monitoring means (124) is constructed in the form of a light barrier (133, 134) sensing the upper edge of the residual stack (108).
  6. A device according to one of Claims 1 to 5, characterized in that the vertically movable stack gripper (1; 101) has associated therewith an approximation initiator (32) which monitors the vertical stroke (13) inside the stacking magazine (9; 109) and which is arranged so as to initiate a reduced lowering speed covering a defined search area (S) for a calculated fluctuation width of the upper edge position of the residual stack (108).
  7. A device according to one of Claims 1 to 6, characterized in that the stack gripper (1; 101) co-operating with a holding-ready position (4) is arranged so as to be movable transversely between two stacking magazines (9).
EP99117507A 1998-09-19 1999-09-04 Device for replenishing the reserve of a pile receiver Expired - Lifetime EP0987203B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19842965 1998-09-19
DE19842965A DE19842965A1 (en) 1998-09-19 1998-09-19 Device for replenishing the stock of a stack magazine

Publications (3)

Publication Number Publication Date
EP0987203A2 EP0987203A2 (en) 2000-03-22
EP0987203A3 EP0987203A3 (en) 2000-12-13
EP0987203B1 true EP0987203B1 (en) 2003-05-02

Family

ID=7881516

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Application Number Title Priority Date Filing Date
EP99117507A Expired - Lifetime EP0987203B1 (en) 1998-09-19 1999-09-04 Device for replenishing the reserve of a pile receiver

Country Status (8)

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US (1) US6290452B1 (en)
EP (1) EP0987203B1 (en)
JP (1) JP2000191216A (en)
CN (1) CN1148308C (en)
AT (1) ATE238954T1 (en)
DE (2) DE19842965A1 (en)
ES (1) ES2195489T3 (en)
PL (1) PL335360A1 (en)

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US9796540B1 (en) * 2010-06-30 2017-10-24 Thiele Technologies System and method for robotic palletization of packages susceptible to package-to-package dimensional creep
CN107206555B (en) * 2015-02-06 2019-12-13 日高精机株式会社 taking-out device for flat tube fin
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Also Published As

Publication number Publication date
CN1249260A (en) 2000-04-05
US6290452B1 (en) 2001-09-18
ATE238954T1 (en) 2003-05-15
EP0987203A3 (en) 2000-12-13
EP0987203A2 (en) 2000-03-22
DE59905295D1 (en) 2003-06-05
CN1148308C (en) 2004-05-05
ES2195489T3 (en) 2003-12-01
PL335360A1 (en) 2000-03-27
DE19842965A1 (en) 2000-03-23
JP2000191216A (en) 2000-07-11

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