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EP0766640A1 - Stacking device for a conveyor tray - Google Patents

Stacking device for a conveyor tray

Info

Publication number
EP0766640A1
EP0766640A1 EP96907986A EP96907986A EP0766640A1 EP 0766640 A1 EP0766640 A1 EP 0766640A1 EP 96907986 A EP96907986 A EP 96907986A EP 96907986 A EP96907986 A EP 96907986A EP 0766640 A1 EP0766640 A1 EP 0766640A1
Authority
EP
European Patent Office
Prior art keywords
stack
charging
cross
arm
pct
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.)
Granted
Application number
EP96907986A
Other languages
German (de)
French (fr)
Other versions
EP0766640B1 (en
Inventor
Ernst A. Hahne
Hermann Künzig
Iwan Christ
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.)
Grapha Holding AG
Eltex Elektrostatik GmbH
Original Assignee
Grapha Holding AG
Eltex Elektrostatik GmbH
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
Priority claimed from DE19515411A external-priority patent/DE19515411A1/en
Application filed by Grapha Holding AG, Eltex Elektrostatik GmbH filed Critical Grapha Holding AG
Publication of EP0766640A1 publication Critical patent/EP0766640A1/en
Application granted granted Critical
Publication of EP0766640B1 publication Critical patent/EP0766640B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65H31/00—Pile receivers
    • B65H31/34—Apparatus for squaring-up piled 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
    • B65H2301/4223—Pressing piles
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/513—Modifying electric properties
    • B65H2301/5132—Bringing electrostatic charge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S414/00—Material or article handling
    • Y10S414/10—Associated with forming or dispersing groups of intersupporting articles, e.g. stacking patterns
    • Y10S414/12—Associated with forming or dispersing groups of intersupporting articles, e.g. stacking patterns including means pressing against top or end of group

Definitions

  • the invention relates to a device for forming a stack on a transport table.
  • Such a device is known per se and is used, for example, for stacking newspapers, magazines or the like in a so-called cross-arm.
  • the object of the invention is to align the stacked objects in a more stable manner in a generic device. This object is achieved in a generic device according to the preamble of the main claim according to the invention by its characterizing features.
  • the stack or partial stack is charged during the formation of the stack in the cross jib.
  • This has the advantage that the blocking is independent of the height of the stack.
  • the blocking of the stack achieved in this way is particularly stable, because during the blocking the stack is also pressed together mechanically, that is to say the mechanical pressing force and the electrostatic forces are complementary.
  • the charging device is arranged in the cross arm 5.
  • This has a table designed as a lifting floor 30 for a (partial) stack 41 and flaps 31, 32, which can be folded from the horizontal working position shown into a vertical working position. After a counted partial stack (with open flaps 31, 32) has fallen into the stack guide of the cross-arm, the flaps are closed and the lifting floor 30 is raised, whereby the partial stack 41 is pressed.
  • the side walls of the stacking guide schematically shown pairs of electrodes 33, 34 or 35, 36 or 37, 38 or 39, 40 are provided, which are arranged at a distance from one another so that the sta- pel / sub-stack 40 is between them.
  • these electrodes can be switched on during the pressing, as a result of which charge is flooded into the partial stack 40 and thus charges the individual sides and the objects themselves.
  • the pairs of electrodes are arranged mirror-symmetrically to a first (horizontally in the drawing) plane E1 as well as to a second (vertical in the drawing) plane E2.
  • the flaps 31, 32 and the lifting table 30 on the one hand and the electrodes of the charging device on the other hand either have opposite polarity or the flaps and the lifting floor can be grounded.
  • the lifting floor 30 moves downward with the blocked partial stack 41.
  • the flaps 31, 32 are folded up.
  • the turntable 42 rotates through 180 °.
  • the previously counted (not shown) and stored there partial stack over the cross arm 5 falls on the already loaded blocked partial stack 41.
  • the flaps 31, 32 close and the lifting floor 30 moves upward, so that a new pressing and ver ⁇ blocking process takes place with the cross-laid stack 41.
  • the process is repeated several times until the stack is ejected. With a correspondingly large stack height, additional charge flows into the pressed stack through the pairs of charging electrodes of the charging device (35, 36; 37, 38) arranged at the bottom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Discharge By Other Means (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

PCT No. PCT/CH96/00138 Sec. 371 Date Dec. 16, 1996 Sec. 102(e) Date Dec. 16, 1996 PCT Filed Apr. 16, 1996 PCT Pub. No. WO96/33118 PCT Pub. Date Oct. 24, 1996The invention relates to a device for forming stacks of items, e.g. stacked newspapers, periodicals or the like, on a tray for further conveyance in the direction of transport, where the stack is taken further by a cross assembler to a compacting tunnel, where there is a blocking device for the stack with at least one charging device with charging electrodes in the direction of transport on both sides near the stack, in which the charging device for electrostatically charging the objects is fitted in the cross assembler.

Description

Vorrichtung zum Bilden eines Stapels auf einem TransporttischDevice for forming a stack on a transport table
Die Erfindung betrifft eine Vorrichtung zum Bilden eines Sta¬ pels auf einem Transporttisch.The invention relates to a device for forming a stack on a transport table.
Eine solche Vorrichtung ist an sich bekannt und dient bei¬ spielsweise zum Stapeln von Zeitungen, Zeitschriften oder der¬ gleichen in einem sogenannten Kreuzausleger.Such a device is known per se and is used, for example, for stacking newspapers, magazines or the like in a so-called cross-arm.
Begünstigt durch Auftragen der Heftung der Zeitschriften und unebene Beilagen neigen solche Stapel von Zeitschriftenexem¬ plaren beim Austritt aus dem Kreuzausleger und beim Transport zu der SchrumpfStation zum Verrutschen oder gar zum Umfallen. Stapelroboter können nach dem Kreuzausleger dann nicht einge¬ setzt werden, wenn ein verrutschter Stapel vorliegt, der nicht aufgenommen werden kann.Favored by applying the stapling of the magazines and uneven inserts, such stacks of magazine copies tend to slip or even fall over when they exit the cross-arm and when they are transported to the shrinking station. Stacking robots cannot be used after the cross-jib if there is a slipped stack that cannot be picked up.
Der Erfindung liegt die Aufgabe zugrunde, bei einer gattungs- gemässen Vorrichtung die aufgeschichteten Stapel von Gegen¬ ständen stabiler auszurichten. Diese Aufgabe wird bei einer gattungsgemässen Vorrichtung ge¬ mäss dem Oberbegriff des Hauptanspruches erfindungsgemäss durch dessen kennzeichnende Merkmale gelöst.The object of the invention is to align the stacked objects in a more stable manner in a generic device. This object is achieved in a generic device according to the preamble of the main claim according to the invention by its characterizing features.
Nach Lehre der Erfindung wird während der Bildung des Stapels im Kreuzausleger der Stapel bzw. Teilstapel aufgeladen. Dies hat den Vorteil, dass die Verblockung unabhängig von der Höhe des Stapels ist. Die solchermassen erzielte Verblockung des Stapels ist besonders stabil, weil während der Verblockung der Stapel auch mechanisch zusammengepresst wird, also sich die mechanische Presskraft und die elektrostatischen Kräfte ergän¬ zen.According to the teaching of the invention, the stack or partial stack is charged during the formation of the stack in the cross jib. This has the advantage that the blocking is independent of the height of the stack. The blocking of the stack achieved in this way is particularly stable, because during the blocking the stack is also pressed together mechanically, that is to say the mechanical pressing force and the electrostatic forces are complementary.
Weitere zweckmässige Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further expedient refinements and developments of the invention are characterized in the subclaims.
Ein bevorzugtes Ausführungsbeipiel wird nachfolgend unter Be¬ zugnahme auf die Zeichnung näher erläutert, die eine schemati¬ sche Darstellung der erfindungsgemässen Vorrichtung zeigt.A preferred exemplary embodiment is explained in more detail below with reference to the drawing, which shows a schematic representation of the device according to the invention.
Bei der erfindungsgemässen Ausführungsform ist die Aufladeein¬ richtung im Kreuzausleger 5 angeordnet. Dieser weist einen als Hubboden 30 ausgebildeten Tisch für einen (Teil-)Stapel 41 sowie Klappen 31, 32 auf, die von der gezeigten waagerechten Arbeitsstellung in eine senkrechte Arbeitslage klappbar sind. Nachdem ein abgezählter Teilstapel (bei offenen Klappen 31, 32) in die Stapelführung des Kreuzauslegers gefallen ist, wer¬ den die Klappen geschlossen und der Hubboden 30 hochgefahren, wodurch der Teilstapel 41 gepresst wird. In den Seitenwänden der Stapelführung sind schematisch gezeigte Paare von Elek¬ troden 33, 34 bzw. 35, 36 bzw. 37, 38 bzw. 39, 40 vorgesehen, die mit Abstand voneinander so angeordnet sind, dass der Sta- pel/Teilstapel 40 sich zwischen ihnen befindet. Während des Pressens können diese Elektroden -je nach Höhe des Stapels 40- zugeschaltet werden, wodurch Ladung in den Teilstapel 40 ein¬ geflutet wird und somit die einzelnen Seiten und die Gegen¬ stände selbst auflädt. Die Paare von Elektroden sind sowohl spiegelsymmetrisch zu einer ersten (waagerecht in der Zeich¬ nung) Ebene El als auch zu einer zweiten (in der Zeichnung senkrechten) Ebene E2 angeordnet.In the embodiment according to the invention, the charging device is arranged in the cross arm 5. This has a table designed as a lifting floor 30 for a (partial) stack 41 and flaps 31, 32, which can be folded from the horizontal working position shown into a vertical working position. After a counted partial stack (with open flaps 31, 32) has fallen into the stack guide of the cross-arm, the flaps are closed and the lifting floor 30 is raised, whereby the partial stack 41 is pressed. In the side walls of the stacking guide, schematically shown pairs of electrodes 33, 34 or 35, 36 or 37, 38 or 39, 40 are provided, which are arranged at a distance from one another so that the sta- pel / sub-stack 40 is between them. Depending on the height of the stack 40, these electrodes can be switched on during the pressing, as a result of which charge is flooded into the partial stack 40 and thus charges the individual sides and the objects themselves. The pairs of electrodes are arranged mirror-symmetrically to a first (horizontally in the drawing) plane E1 as well as to a second (vertical in the drawing) plane E2.
Die Klappen 31, 32 sowie der Hubtisch 30 einerseits und die Elektroden der Aufladeeinrichtung andererseits weisen entweder entgegengesetzte Polarität auf oder es können die Klappen und der Hubboden geerdet sein. Nach dem Press- und Ladungsvorgang fährt der Hubboden 30 mit dem verblockten Teilstapel 41 ab¬ wärts. Danach werden die Klappen 31, 32 hochgeklappt. Der Drehteller 42 dreht sich um 180°. Der zuvor abgezählte (nicht gezeigte) und dort abgespeicherte Teilstapel über dem Kreuz¬ ausleger 5 fällt auf den bereits aufgeladenen verblockten Teilstapel 41. Die Klappen 31, 32 schliessen sich und der Hub¬ boden 30 fährt aufwärts, so dass ein erneuter Press- und Ver¬ blockungsvorgang mit dem kreuzausgelegten Stapel 41 erfolgt. Je nach erforderlich ausgelegter Anzahl von Exemplaren von Gegenständen bzw. der Höhe des Stapels wird der Vorgang mehr¬ mals wiederholt, bis danach der Stapelausstoss erfolgt. Bei entsprechend grosser Stapelhöhe fliesst zusätzlich Ladung in den gepressten Stapel durch die - jeweils unten angeordneten Paare - von Aufladeelektroden der Aufladeeinrichtung (35, 36; 37, 38). The flaps 31, 32 and the lifting table 30 on the one hand and the electrodes of the charging device on the other hand either have opposite polarity or the flaps and the lifting floor can be grounded. After the pressing and loading process, the lifting floor 30 moves downward with the blocked partial stack 41. Then the flaps 31, 32 are folded up. The turntable 42 rotates through 180 °. The previously counted (not shown) and stored there partial stack over the cross arm 5 falls on the already loaded blocked partial stack 41. The flaps 31, 32 close and the lifting floor 30 moves upward, so that a new pressing and ver ¬ blocking process takes place with the cross-laid stack 41. Depending on the required number of copies of objects or the height of the stack, the process is repeated several times until the stack is ejected. With a correspondingly large stack height, additional charge flows into the pressed stack through the pairs of charging electrodes of the charging device (35, 36; 37, 38) arranged at the bottom.

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1. Vorrichtung zum Bilden eines auf einem Tisch1. Device for forming one on a table
(30) in Transportrichtung weiterzutransportie¬ renden Stapels (41) von gestapelten Gegen¬ ständen, wie z.B. gestapelten Zeitungen, Zeit¬ schriften oder dergleichen, wobei der Stapel von einem Kreuzausleger (5) zu einem Schrumpf¬ tunnel weitertransportiert wird, wobei eine Verblockungseinrichtung für den Stapel (41) vorgesehen ist und diese zumindest je eine, in Transportrichtung beiderseits neben dem Stapel angeordnete Aufladungseinrichtung mit Aufla¬ dungselektroden aufweist, dadurch gekennzeich¬ net, dass die Aufladeeinrichtung zum elektro¬ statischen Aufladen der Gegenstände im Kreuz¬ ausleger (5) angeordnet ist.(30) stack (41) of stacked objects to be transported further in the transport direction, e.g. stacked newspapers, magazines or the like, the stack being transported onwards from a cross-arm (5) to a shrinking tunnel, an interlocking device being provided for the stack (41) and this at least one each arranged next to the stack on both sides in the transport direction Has charging device with charging electrodes, characterized in that the charging device for the electrostatic charging of the objects is arranged in the cross-arm (5).
2. Vorrichtung nach Anspruch 1, dadurch gekenn¬ zeichnet, dass der Tisch als Hubboden (30) des Kreuzauslegers (5) ausgebildet ist. 2. Device according to claim 1, characterized gekenn¬ characterized in that the table is designed as a lifting floor (30) of the cross-arm (5).
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Kreuzausleger (5) Klappen (31, 32) aufweist, dass die Auflade¬ einrichtung als zumindest ein Paar einander gegenüberliegende Aufladeelektroden (33, 34) mit der gleichen einen Polarität ausgebildet ist und dass der Hubboden (30) sowie die Klap¬ pen (31, 32) entweder geerdet oder aber elek¬ trisch vom Kreuzausleger (5) separiert sowie mit gegenüber der einen Polarität entgegenge¬ setzter Polarität aufladbar sind.3. Device according to claim 1 or 2, characterized in that the cross arm (5) has flaps (31, 32), that the charging device is designed as at least one pair of opposing charging electrodes (33, 34) with the same one polarity and that the lifting floor (30) and the flaps (31, 32) are either grounded or else electrically separated from the cross arm (5) and can be charged with a polarity opposite to the one polarity.
4. Vorrichtung nach Anspruch 3, dadurch gekenn¬ zeichnet, dass insgesamt vier Paare von Aufla¬ deelektroden (33, 34; 35, 36; 37, 38; 39, 40) vorgesehen sind, von denen je zwei überein¬ ander sowie nebeneinander angeordnet sind.4. The device according to claim 3, characterized in that a total of four pairs of charging electrodes (33, 34; 35, 36; 37, 38; 39, 40) are provided, two of which are arranged one above the other and next to one another are.
5. Vorrichtung nach Anspruch 4, dadurch gekenn¬ zeichnet, dass die zwei übereinander angeord¬ neten Paare von Aufladeelektroden (33, 34; 35, 36) spiegelsymmetrisch zu einer zwischen ihnen angeordneten ersten Ebene angeordnet sind. 5. The device according to claim 4, characterized in that the two pairs of charging electrodes (33, 34; 35, 36) arranged one above the other are arranged mirror-symmetrically to a first plane arranged between them.
6. Vorrichtung nach Anspruch 4, dadurch gekenn¬ zeichnet, dass die zwei nebeneinander angeord¬ neten Paare von Aufladeelektroden (37, 38; 39, 40) spiegelsymmetrisch zu einer zwischen ihnen angeordneten zweiten Ebene angeordnet sind. 6. The device according to claim 4, characterized in that the two adjacent pairs of charging electrodes (37, 38; 39, 40) are arranged mirror-symmetrically to a second plane arranged between them.
EP96907986A 1995-04-19 1996-04-16 Stacking device for a conveyor tray Expired - Lifetime EP0766640B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19514405 1995-04-19
DE19514405 1995-04-19
DE19515411A DE19515411A1 (en) 1995-04-19 1995-04-26 Device for forming a stack on a transport table
DE19515411 1995-04-26
PCT/CH1996/000138 WO1996033118A1 (en) 1995-04-19 1996-04-16 Stacking device for a conveyor tray

Publications (2)

Publication Number Publication Date
EP0766640A1 true EP0766640A1 (en) 1997-04-09
EP0766640B1 EP0766640B1 (en) 1999-06-16

Family

ID=26014464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96907986A Expired - Lifetime EP0766640B1 (en) 1995-04-19 1996-04-16 Stacking device for a conveyor tray

Country Status (5)

Country Link
US (1) US6102651A (en)
EP (1) EP0766640B1 (en)
JP (1) JPH10502042A (en)
AT (1) ATE181304T1 (en)
WO (1) WO1996033118A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19719935A1 (en) * 1997-05-13 1998-11-19 Eltex Elektrostatik Gmbh Device and method for blocking a stack of stacked objects
US7225924B2 (en) * 2002-02-26 2007-06-05 Lockheed Martin Corporation Flat mail sleeve packaging and method of use
EP1865825A4 (en) 2005-04-01 2009-06-03 Welch Allyn Inc Vaginal speculum
EP2128064B1 (en) * 2008-05-29 2013-04-03 Simco Nederland B.V. Method and device for holding together an electrically non-conductive stack of objects and an electrode unit therefore
JP5977992B2 (en) * 2012-04-25 2016-08-24 理想科学工業株式会社 Paper discharge device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640605A (en) * 1947-12-30 1953-06-02 American Can Co Magnetic stacking mechanism
JPS6127869A (en) * 1984-07-13 1986-02-07 Nichiro Kogyo Kk Device for stacking small bundles of folding printed materials
US5062764A (en) * 1990-01-08 1991-11-05 Robert A. Foisie Method and apparatus using electrostatic charges to stabilize the upper sheets of a stack of paper
US5228373A (en) * 1990-01-08 1993-07-20 Robert A. Foisie Method and apparatus using electrostatic charges to temporarily hold packets of paper
DE59508827D1 (en) * 1994-09-21 2000-12-07 Eltex Elektrostatik Gmbh DEVICE FOR FORMING A STACK ON A TRANSPORT TABLE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9633118A1 *

Also Published As

Publication number Publication date
WO1996033118A1 (en) 1996-10-24
EP0766640B1 (en) 1999-06-16
ATE181304T1 (en) 1999-07-15
US6102651A (en) 2000-08-15
JPH10502042A (en) 1998-02-24

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