EP0783451B1 - Device for forming a stack on a conveyer table - Google Patents

Device for forming a stack on a conveyer table Download PDF

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Publication number
EP0783451B1
EP0783451B1 EP95932687A EP95932687A EP0783451B1 EP 0783451 B1 EP0783451 B1 EP 0783451B1 EP 95932687 A EP95932687 A EP 95932687A EP 95932687 A EP95932687 A EP 95932687A EP 0783451 B1 EP0783451 B1 EP 0783451B1
Authority
EP
European Patent Office
Prior art keywords
stack
conveying direction
contact rollers
feet
respect
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
EP95932687A
Other languages
German (de)
French (fr)
Other versions
EP0783451A1 (en
Inventor
Ernst August Hahne
Hermann Künzig
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.)
Eltex Elektrostatik GmbH
Original Assignee
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 DE19944434946 external-priority patent/DE4434946A1/en
Priority claimed from DE19944441431 external-priority patent/DE4441431A1/en
Application filed by Eltex Elektrostatik GmbH filed Critical Eltex Elektrostatik GmbH
Publication of EP0783451A1 publication Critical patent/EP0783451A1/en
Application granted granted Critical
Publication of EP0783451B1 publication Critical patent/EP0783451B1/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
    • 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
    • B65H2301/50—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 according to the preamble of the main claim.
  • Such a device is known from DE 90 13 466 U1 and is used for example for stacking newspapers, Magazines or the like from a so-called Cross jib to a shrinking station, especially for Foils.
  • the invention has for its object in a generic device the stacked stacks of Align objects more stably.
  • the stack is not only means of the two laterally arranged charging electrodes one polarity, but also on the Transport table opposite top of the stack unloaded with the grounded contact roller, which further improves the blocking effect can be.
  • the device designated 5 overall in FIG. 1 is used to block the total designated 6 Stack on a total of 7 Transport table is stored.
  • This stack 6 is then in Transport direction 8 (Fig. 2) to a next one Work station, for example a shrinking station forwarded in the stack wrapped in transparencies and then welded, or using a shrink wrap is shrunk.
  • each one Charging electrode 11, 12 is provided. These charging electrodes run perpendicular to the transport direction 8 and extend perpendicular to the transport table 7 to full height of the stack 6 on his both sides 9, 10 with negative polarity to be charged.
  • a total of 14 designated, in the reproduced embodiment Grounded contact roller 14 is provided, which on a transverse to Rod 13 extending axis 15 at each of its two ends has a single roll 16.
  • two axes 15 can also be provided parallel to one another be, at the ends of the respective individual rolls 16 are arranged. It can also be provided that the Rolls 16 not only with their own weight and that of Bar 13 and axles 15 rest on stack 6, but also one from above towards the Transport table 7 pressing force of the rod 13 is provided is.
  • the charging electrodes 11, 12 can be rectangular to both the transport direction 8 and Infeed direction Y in the direction X (Fig. 1) to be movable.
  • the holder 17 for the charging electrodes 11, 12 be placed on feet 18, which as Magnetic feet are formed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Description

Die Erfindung betrifft eine Vorrichtung gemäß dem Oberbegriff des Hauptanspruches.The invention relates to a device according to the preamble of the main claim.

Eine solche Vorrichtung ist aus der DE 90 13 466 U1 bekannt und dient beispielsweise zum Stapeln von Zeitungen, Zeitschriften oder dergleichen von einem sogenannten Kreuzausleger zu einer Schrumpfstation, insbesondere für Folien.Such a device is known from DE 90 13 466 U1 and is used for example for stacking newspapers, Magazines or the like from a so-called Cross jib to a shrinking station, especially for Foils.

Begünstigt durch Auftragen der Heftung der Zeitschriften und unebene Beilagen neigen solche Stapel von Zeitschriftenexemplaren beim Austritt aus dem Kreuzausleger und beim Transport zu der Schrumpfstation zum Verrutschen oder gar zum Umfallen. Somit können Stapelroboter nach dem Kreuzausleger nicht eingesetzt werden, da ein verrutschter Stapel nicht aufgenommen werden kann.Favored by applying the magazine and uneven side dishes tend to have such stacks of Magazine copies when leaving the cross-arm and when transported to the shrinking station to slip or even toppling over. Thus, after the Cross jibs cannot be used because of a slipped Stack can not be included.

Der Erfindung liegt die Aufgabe zugrunde, bei einer gattungsgemäßen Vorrichtung die aufgeschichteten Stapel von Gegenständen stabiler auszurichten.The invention has for its object in a generic device the stacked stacks of Align objects more stably.

Diese Aufgabe wird bei einer gattungsgemäßen Vorrichtung gemäß dem Oberbegriff des Hauptanspruches erfindungsgemäß durch dessen kennzeichnende Merkmale gelöst. This object is achieved according to a generic device the preamble of the main claim according to the invention its characteristic features solved.

Die Gegenstände in dem Stapel werden aufgeladen, wodurch im Stapel selbst schon eine Gegenpolarität vorhanden ist mit Bezug auf die, durch die Aufladungselektroden mit Elektrostatik aufgeladenen, einander abgewandten Seitenbereiche des Stapels, also die senkrecht zur Transportrichtung ausgerichteten Seitenflächen. Nachdem der Papierstapel eine höhere Dielektrizitätskonstante als Luft aufweist, konzentriert sich das elektrische Feld in diesen Bereich. Zusätzlich zu dieser Konzentration ergibt sich eine Feldkonzentration in den überschüssigen Lufteinschlüssen im Stapel, so daß die Feldkraftwirkung im Stapel und der Ladungsansammlung an der Oberfläche die Luft im Stapel verdrängt. Dies führt zu einer höheren Adhäsion der Exmpelare zueinander, wodurch der Stapel mechanisch verblockt und infolgedessen gehaltert wird. Hierbei wird davon ausgegangen, daß der Transporttisch an Masse gelegt ist, so daß sich das elektrische Feld von jedem Seitenbereich bogenförmig auf den Transporttisch hin ausrichtet.The items in the stack are charged, causing A counter polarity is already present in the stack itself with respect to that by using the charging electrodes Electrostatic charged, facing away from each other Side areas of the stack, that is, perpendicular to the Transport direction aligned side surfaces. After this the paper stack has a higher dielectric constant than Air, the electric field is concentrated in this area. In addition to this concentration results a field concentration in the excess Air pockets in the stack, so that the field force effect in Stack and charge accumulation on the surface Air displaced in the stack. This leads to a higher one Adhesion of the exmpelare to each other, causing the stack mechanically blocked and consequently held. It is assumed that the transport table is on Ground is placed so that the electric field of each side area in an arc towards the transport table aligns.

Nach Lehre der Erfindung wird der Stapel nicht nur mittels der beiden seitlich angeordneten Aufladungselektroden mit einer Polarität, sondern zusätzlich auf der den Transporttisch gegenüberliegenden Oberseite des Stapels mit der geerdeten Kontaktrolle entladen, wodurch der Verblockungseffekt noch weiter verbessert werden kann.According to the teaching of the invention, the stack is not only means of the two laterally arranged charging electrodes one polarity, but also on the Transport table opposite top of the stack unloaded with the grounded contact roller, which further improves the blocking effect can be.

Weitere zweckmäßige Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further expedient refinements and developments the invention are characterized in the subclaims.

Ein bevorzugtes Ausführungsbeispiel wird nachfolgend unter Bezugnahme auf die Zeichnung näher erläutert. In dieser zeigt:

  • Figur 1   eine schematische Ansicht auf eine Vorrichtung zum Bilden eines Stapels mit Zeitschriften;
    und
  • Figur 2   die Vorrichtung gemäß Fig. 1, in Seitenansicht.
    • A preferred embodiment is explained in more detail below with reference to the drawing. In this shows:
  • Figure 1 is a schematic view of an apparatus for forming a stack of magazines;
    and
  • Figure 2 shows the device of FIG. 1, in side view.

    • Die in Fig. 1 insgesamt mit 5 bezeichnete Vorrichtung dient zum Verblocken des insgesamt mit 6 bezeichneten Stapels, der auf einem insgesamt mit 7 bezeichneten Transporttisch abgelegt ist. Dieser Stapel 6 wird dann in Transportrichtung 8 (Fig. 2) zu einer nächsten Arbeitsstation, beispielsweise einer Schrumpfstation weitergeleitet, in der der Stapel in Folien eingepackt und dann geschweißt, oder aber mittels einer Schrumpffolie geschrumpft wird.The device designated 5 overall in FIG. 1 is used to block the total designated 6 Stack on a total of 7 Transport table is stored. This stack 6 is then in Transport direction 8 (Fig. 2) to a next one Work station, for example a shrinking station forwarded in the stack wrapped in transparencies and then welded, or using a shrink wrap is shrunk.

    Zur Bildung einer mechanischen Eigensteifigkeit des Stapels 6 wird dieser mit der insgesamt mit 5 bezeichneten Verblockungseinrichtung verblockt. Hierbei sind an den beiden Seitenflächen 9, 10 des Stapels 6 beim wiedergegebenen Ausführungsbeispiel je eine Aufladelektrode 11, 12 vorgesehen. Diese Aufladeelektroden verlaufen senkrecht zur Transportrichtung 8 und erstrecken sich senkrecht zu dem Transporttisch 7 bis zur vollständigen Höhe des Stapels 6 und zwar auf seinen beiden Seiten 9, 10, die mit negativer Polarität aufgeladen werden.To form a mechanical inherent stiffness of the Stack 6, this is designated as 5 in total Blocking device blocked. Here are the two side surfaces 9, 10 of the stack 6 at reproduced embodiment each one Charging electrode 11, 12 is provided. These charging electrodes run perpendicular to the transport direction 8 and extend perpendicular to the transport table 7 to full height of the stack 6 on his both sides 9, 10 with negative polarity to be charged.

    Weiterhin ist eine vertikal bezüglich des Transporttisches 7 in Richtung Y bewegliche Stange 13 eine insgesamt mit 14 bezeichnete, beim wiedergegebenen Ausführungsbeispiel geerdete Kontaktrolle 14 vorgesehen, die an einer quer zur Stange 13 verlaufenden Achse 15 an deren beiden Enden je eine Einzelrolle 16 aufweist. Wie aus Fig. 2 ersichtlich, können auch zwei Achsen 15 parallel zueinander vorgesehen sein, an deren Enden jeweeils eigentliche Einzelrollen 16 angeordnet sind. Außerdem kann vorgesehen sein, daß die Rollen 16 nicht nur mit ihrem Eigengewicht und jener der Stange 13 sowie der Achsen 15 auf dem Stapel 6 aufliegen, sondern zusätzlich eine von oben in Richtung auf den Transporttisch 7 drückende Kraft der Stange 13 vorgesehen ist.Furthermore, one is vertical with respect to the transport table 7 rod 13 movable in the Y direction, a total of 14 designated, in the reproduced embodiment Grounded contact roller 14 is provided, which on a transverse to Rod 13 extending axis 15 at each of its two ends has a single roll 16. As can be seen from Fig. 2, two axes 15 can also be provided parallel to one another be, at the ends of the respective individual rolls 16 are arranged. It can also be provided that the Rolls 16 not only with their own weight and that of Bar 13 and axles 15 rest on stack 6, but also one from above towards the Transport table 7 pressing force of the rod 13 is provided is.

    Ferner können die Aufladelektroden 11, 12 rechtwinklig sowohl zur Transportrichtung 8, als auch zur Zustellrichtung Y in Richtung X (Fig. 1) beweglich sein. Außerdem können die Halter 17 für die Aufladeelektroden 11, 12 auf Füßchen 18 aufgestellt sein, die als Magnetfüßchen ausgebildet sind.Furthermore, the charging electrodes 11, 12 can be rectangular to both the transport direction 8 and Infeed direction Y in the direction X (Fig. 1) to be movable. In addition, the holder 17 for the charging electrodes 11, 12 be placed on feet 18, which as Magnetic feet are formed.

    Claims (11)

    1. Apparatus for forming a stack (6) of stacked objects such as for example stacked newspapers, magazines or the like, which stack is to be further conveyed in the conveying direction (8) on a conveyor table (7), wherein the stack (6) is conveyed to a further different working station, for example during further transportation from a transverse delivery unit to a shrink-wrap tunnel, and wherein there is provided a blocking arrangement (5) for the stack (6), which has at least one respective charging electrode (11, 12) arranged in the conveying direction (8) on each side beside the stack (6), characterised in that the blocking arrangement (5) has at least one earthed contact roller (14) above the stack.
    2. Apparatus according to claim 1 characterised in that at least two charging electrodes (11, 12) are of the same polarity.
    3. Apparatus according to one of claims 1 and 2 characterised in that the conveyor table (7) is connected to earth.
    4. Apparatus according to one of claims 1 to 3 characterised in that at least one of the charging electrodes (11, 12) is arranged substantially parallel to the conveying direction (8).
    5. Apparatus according to one of claims 1 to 4 characterised in that at least one of the charging electrodes (11, 12) is arranged transversely with respect to the conveying direction (8).
    6. Apparatus according to one of claims 1 to 5 characterised in that the contact rollers (14) are adjustable in respect of height.
    7. Apparatus according to one of claims 1 to 6 characterised in that the contact rollers (14) are controllable adjustably in respect of height by a light barrier arrangement or by a proximity switch.
    8. Apparatus according to one of claims 1 to 7 characterised in that the contact rollers (14) rest on the stack (6) under their own weight.
    9. Apparatus according to claim 8 characterised in that the contact rollers (14) can additionally be pressed in a direction towards the stack (6).
    10. Apparatus according to one of claims 1 to 9 characterised in that the blocking arrangement (5) is adapted to be set up by means of feet (18).
    11. Apparatus according to claim 10 characterised in that the feet (18) are in the form of magnetic feet.
    EP95932687A 1994-09-21 1995-09-07 Device for forming a stack on a conveyer table Expired - Lifetime EP0783451B1 (en)

    Applications Claiming Priority (7)

    Application Number Priority Date Filing Date Title
    DE4433583 1994-09-21
    DE4433583 1994-09-21
    DE4434946 1994-09-30
    DE19944434946 DE4434946A1 (en) 1994-09-30 1994-09-30 Newspaper-stacking mechanism on transporting platform
    DE19944441431 DE4441431A1 (en) 1994-11-22 1994-11-22 Stacking device on feed table, e.g. for newspapers, journals, magazines
    DE4441431 1994-11-22
    PCT/EP1995/003521 WO1996009239A1 (en) 1994-09-21 1995-09-07 Device for forming a stack on a conveyer table

    Publications (2)

    Publication Number Publication Date
    EP0783451A1 EP0783451A1 (en) 1997-07-16
    EP0783451B1 true EP0783451B1 (en) 2000-11-02

    Family

    ID=27206800

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP95932687A Expired - Lifetime EP0783451B1 (en) 1994-09-21 1995-09-07 Device for forming a stack on a conveyer table

    Country Status (5)

    Country Link
    US (1) US5868546A (en)
    EP (1) EP0783451B1 (en)
    JP (1) JP3187056B2 (en)
    DE (1) DE59508827D1 (en)
    WO (1) WO1996009239A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102005048002B4 (en) * 2005-10-06 2010-03-25 Eltex-Elektrostatik Gmbh High-voltage electrode arrangement

    Families Citing this family (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19515411A1 (en) * 1995-04-19 1996-10-24 Eltex Elektrostatik Gmbh Device for forming a stack on a transport table
    US6102651A (en) * 1995-04-19 2000-08-15 Grapha Holding Ag Stacking device for a conveyor tray
    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
    NL1029461C2 (en) * 2005-07-07 2007-01-09 Simco Nederland Method and device for holding together an electrically non-conductive stack of objects.
    US7423555B2 (en) * 2005-07-12 2008-09-09 Delta Electronics, Inc. Human-machine interface apparatus with expanded function
    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

    Family Cites Families (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3834290A (en) * 1973-04-26 1974-09-10 V Nelson Apparatus for counting and stacking sheet material
    DE3508514A1 (en) * 1985-03-09 1986-09-11 E.C.H. Will (Gmbh & Co), 2000 Hamburg Method and device for stabilising stacks of paper
    DE3540203C2 (en) * 1985-11-13 1993-12-09 Will E C H Gmbh & Co Device for conveying stacks of paper
    DE4000263A1 (en) * 1990-01-03 1991-07-04 System Gmbh DEVICE FOR STRAIGHTING STACKS
    US5228373A (en) * 1990-01-08 1993-07-20 Robert A. Foisie Method and apparatus using electrostatic charges to temporarily hold packets of paper
    DE9013466U1 (en) * 1990-09-25 1991-11-28 Natec Reich, Summer GmbH & Co KG, 8996 Opfenbach Device for fixing a stack of packages on a conveyor belt
    US5437534A (en) * 1992-01-21 1995-08-01 R. R. Donnelley & Sons Company Lift index table

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102005048002B4 (en) * 2005-10-06 2010-03-25 Eltex-Elektrostatik Gmbh High-voltage electrode arrangement

    Also Published As

    Publication number Publication date
    DE59508827D1 (en) 2000-12-07
    WO1996009239A1 (en) 1996-03-28
    JPH10508274A (en) 1998-08-18
    US5868546A (en) 1999-02-09
    EP0783451A1 (en) 1997-07-16
    JP3187056B2 (en) 2001-07-11

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