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EP2086292B1 - Method and device for electrostatic discharge of multiple paged printer products - Google Patents

Method and device for electrostatic discharge of multiple paged printer products Download PDF

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Publication number
EP2086292B1
EP2086292B1 EP08019479A EP08019479A EP2086292B1 EP 2086292 B1 EP2086292 B1 EP 2086292B1 EP 08019479 A EP08019479 A EP 08019479A EP 08019479 A EP08019479 A EP 08019479A EP 2086292 B1 EP2086292 B1 EP 2086292B1
Authority
EP
European Patent Office
Prior art keywords
printed products
side edge
air jet
printed
open side
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.)
Not-in-force
Application number
EP08019479A
Other languages
German (de)
French (fr)
Other versions
EP2086292A1 (en
Inventor
Konrad Auf Der Maur
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 EP2086292A1 publication Critical patent/EP2086292A1/en
Application granted granted Critical
Publication of EP2086292B1 publication Critical patent/EP2086292B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/06—Carrying-off electrostatic charges by means of ionising radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/003—Delivering or advancing articles from machines; Advancing articles to or into piles by grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
    • 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
    • B65H2301/5133—Removing electrostatic charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/132—Side portions
    • B65H2701/1321—Side portions of folded article or web
    • B65H2701/13214—Side opposite to spine portion of folded article

Definitions

  • the present invention relates to a method and a device for the electrostatic discharge of impressblättrigen and / or Herblättrigen Druckerei employmentn according to the claims 1 and 6.
  • Such printed products such as newspapers, magazines or parts thereof, have at least two, but usually a considerably larger number of sheets, which abut each other in the closed state of the printed product.
  • two sheets may be formed by a folded sheet, with the two sheets joined together at the seam.
  • individual leaves can also be connected to each other at a side edge, forming a covenant.
  • Those edges of the printed product which do not form the collar or a fold are to be understood in the present context as open side edges.
  • the electrostatic discharge of a material web, including a paper web, by means of ion-blast nozzles is known, for example, from the "Handbook of Electrostatic Systems" of Eltex-Elektrostatik GmbH, Weil am Rhein (print reference WP-d-ÜP 002-04 / 04-15).
  • Ionenblasdüse also in the document DE 299 23 560 U1 disclosed.
  • an air jet provided with ions is generated, which according to the invention is directed against an open side edge of a printed product.
  • this jet of air the printed product is fluffed up from the open side edge and simultaneously discharged.
  • a sticking together of the sheets of the printed products produced by electrostatic charging of the printed products is canceled out or at least considerably reduced by the electrostatic discharge, which in turn improves puffing and ensures deeper penetration of the air jet into the respective printed product for further electrostatic discharge.
  • several ion-blast nozzles can be used.
  • a flat-jet Ionenblasdüse is used, which generates a planar air jet.
  • An optimal discharge effect is achieved when the open side edge and preferably the Druckereioch are in the plane of the planar air jet.
  • the air jet is directed at right angles to the open side edge. This enables a homogeneous fluffing and unloading of the printed product in the largest possible area of the side edge.
  • a first embodiment of an inventive device for the electrostatic discharge of printed products 10 is shown. It has a processing device 12, which has a Movement path 14 for the printed products 10 pretends. It has a belt conveyor 16 designed as a conveyor 18 and a stacking device 20, the stacking shaft 22 is arranged on the conveyor belt in the conveying direction F of the conveyor 18, downstream end of the belt conveyor 16. The laterally limited by shaft walls 24 stacking shaft 22 is open at the top and a shaft bottom 26 is arranged, which in a generally known manner by means of a Hubaggregats liftable and depending on the height of the formed stack 28 is lowered such that the uppermost Printed product 10 of the stack 28 is at least approximately at a predefined height.
  • the belt conveyor 16 has two juxtaposed conveyor belts 30 (in the Fig. 2 For the sake of clarity, no printed products 10 are shown), which are driven together in the conveying direction F and form a contact surface for the printed products 10.
  • At the downstream end of each of the conveyor belts 30 is guided around a guide roller 32 associated therewith, wherein the two guide rollers 32 are mounted spaced apart in the direction of its axis on a machine frame 34.
  • a Ionenblasdüse 36 fixed in the present case, a flat-jet Ionenblasdüse which is disposed between the two conveyor belts 30 and the guide rollers 32 is further. It is meant to a plane air jet 38 which blows parallel to the conveying direction F and has charged particle ions, wherein the planar air jet 38 extends in a plane 40 determined by the ion blowing nozzle 36 which is parallel to the shaft bottom 26 and thus parallel to the stacked printed products 10 is oriented.
  • the Ionenblasdüse 36 is located below the support surface 30 defined by the conveyor belts 30 for the printed products 10 and the air jet 38 blows above the Ionenblasdüse 36 facing shaft wall 24 into the stacking shaft 22 inside.
  • the Ionenblasdüse 36 is connected in a known manner on the one hand to a high voltage supply 42 and on the other hand to a compressed air supply 44.
  • the high voltage supply 44 carries high voltage generated in a power supply unit 46 to the electrode or the electrodes of the ion blowing nozzle 36. Accordingly, the compressed air supply 44 is connected to a compressed air source 48.
  • a compressed air source 48 For example, an ion-blast nozzle R35F from Eltex-Elektrostatik GmbH, Weil am Rhein, with a corresponding power supply 46 proves to be suitable.
  • printed products 10 is a plurality of sheets 49, folded printed products which are supplied in an imbricated formation S the stacking shaft 22.
  • the movement path 14 of the printed products 10 thus runs on the belt conveyor 16 and at its end in the direction of the printed products 10 in the stacking shaft 22 into it.
  • each printed product 10 is scaly on the respective leading printed product 10, wherein the perpendicular to the conveying direction F extending fold 50 with respect to this opposite open side edge 52 of the respective printed product 10 is leading.
  • the stacking shaft 22 is equipped from above by means of printed products 10, wherein these are supplied by means of the belt conveyor 16 in the horizontal direction to the input 54 of the stacking shaft 22.
  • the shaft bottom 26 is adjusted in a known manner in an altitude such that the printed products fall 10 in a direction of conveying F falling stage on the shaft bottom 26 and the already formed stack 28.
  • the uppermost stacking shaft 22 fed to the printed product 10 by the subsequent printed product 10 at and adjacent to the open side edge 52 is exposed and thus not burdened.
  • the printed products 10 are fluffed up by means of the directed against their open side edge 52 air jet 38 and discharged simultaneously electrostatically. This is done optimally in the embodiment shown in that on the one hand the top of the stacking shaft 22 fed printed product 10 is exposed at its open side edge 52 up against the next following printed product 10 is fed to the stacking shaft and on the other hand, the shaft bottom 26 is controlled in such a high altitude, that the respective uppermost printed product 10 is located in the plane 40 of the air jet 38.
  • FIG Fig. 3 A further embodiment of a device according to the invention for the electrostatic discharge of printed products 10 is shown in FIG Fig. 3 shown schematically.
  • the processing device 12 in turn has a conveyor 18, which, however, is designed as a staple conveyor 56.
  • staples 58 are moved in the conveying direction F by means of a drive member 60, for example a revolving tension member.
  • a drive member 60 for example a revolving tension member.
  • Each of the staples 58 holds a printed product 10 at its fold 50, whereby the printed products 10 are transported in a hanging position.
  • the movement path 14 of the printed products is thus determined by the staple conveyor 56.
  • the vertical distance between the staple conveyor 56 and the support ribbons 62 is smaller than the corresponding dimension of the printed products 10, so that they rest with their folds 50 opposite, open side edge 52 on the support ribbons 62 and the printed products 10 thereby, against the conveying direction F, in Effective range of the support ribbons 62 are bent.
  • the ion-blast nozzle 36 is arranged such that the air jet 38 strikes the side edge 52 passing it at right angles and the plane 40 defined by the air jet 38 strikes the printed products in the effective region of the air jet 38 10, at least approximately coincident with an area defined by this side end region of the printed products 10 surface.
  • Fig. 4 shows a further embodiment of a processing device 12 according to the invention for the electrostatic discharge of printed products 10.
  • the conveyor 18 is formed as, the movement path 14 determining belt conveyor 16, by means of which the printed products 10 are transported in a scale formation S in the conveying direction F.
  • each printed product 10 rests on the respectively trailing printed product 10, wherein in each case the fold 50 is leading in relation to the opposite open lateral edge 52.
  • two ion-blast nozzles 36 preferably flat-jet ion-blast nozzles, are arranged one behind the other in the conveying direction F and aligned such that the planes 40 of the air jets 38 extend at least approximately parallel to the printed products 10.
  • the air jets 38 are in the conveying direction F and obliquely directed down so that they impinge at right angles to the side edges 52.
  • the printed products 10 are blown at their opposite side of the fold 50.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Printing Methods (AREA)
  • Discharge By Other Means (AREA)
  • Pile Receivers (AREA)

Abstract

The method involves arranging air jet (38) against an open lateral edge (52) of printing press product (10) by an ion blowing nozzle (36). The printing press product is colored and unloaded through the air jet by the open lateral edge. The lateral edge is provided approximately in a plane (40) of the air jet. An independent claim is included for a device for electrostatic unloading of double laminated or multi-laminated printing press products, such as newspapers or magazines.

Description

Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zur elektrostatischen Entladung von zweiblättrigen und / oder mehrblättrigen Druckereiprodukten gemäss den Patentansprüchen 1 und 6.The present invention relates to a method and a device for the electrostatic discharge of zweiblättrigen and / or mehrblättrigen Druckereiprodukten according to the claims 1 and 6.

Derartige Druckereiprodukte, wie Zeitungen, Zeitschriften oder Teile davon, weisen mindestens zwei, in der Regel jedoch eine erheblich grössere Anzahl von Blättern auf, die im geschlossenen Zustand des Druckereiprodukts aneinander anliegen. Zwei Blätter können beispielsweise durch einen gefalteten Bogen gebildet sein, wobei die beiden Blätter beim Falz miteinander verbunden sind. Individuelle Blätter können jedoch auch bei einer Seitenkante, einen Bund bildend, miteinander verbunden sein. Diejenigen Kanten des Druckereiprodukts, welche nicht den Bund bzw. einen Falz bilden, sind im vorliegenden Zusammenhang als offene Seitenkanten zu verstehen.Such printed products, such as newspapers, magazines or parts thereof, have at least two, but usually a considerably larger number of sheets, which abut each other in the closed state of the printed product. For example, two sheets may be formed by a folded sheet, with the two sheets joined together at the seam. However, individual leaves can also be connected to each other at a side edge, forming a covenant. Those edges of the printed product which do not form the collar or a fold are to be understood in the present context as open side edges.

Das elektrostatische Entladen einer Materialbahn, auch einer Papierbahn, mittels Ionenblasdüsen ist beispielsweise aus dem "Handbuch der elektrostatischen Systeme" der Eltex-Elektrostatik GmbH, Weil am Rhein (Druckvermerk WP-d-ÜP 002-04/04-15) bekannt. Weiter ist eine Ionenblasdüse auch in der Druckschrift DE 299 23 560 U1 offenbart. Für die elektrostatische Entladung einer Papierbahn wird diese an von Ionenblasdüsen erzeugten Luftstrahlen vorbeitransportiert, wobei die Luftstrahlen in Richtung gegen die flächige Papierbahn gerichtet sind.The electrostatic discharge of a material web, including a paper web, by means of ion-blast nozzles is known, for example, from the "Handbook of Electrostatic Systems" of Eltex-Elektrostatik GmbH, Weil am Rhein (print reference WP-d-ÜP 002-04 / 04-15). Next is a Ionenblasdüse also in the document DE 299 23 560 U1 disclosed. For the electrostatic discharge of a paper web, this is generated by Ionenblasdüsen Air jets transported past, wherein the air jets are directed towards the flat paper web.

Es ist eine Aufgabe der vorliegenden Erfindung, ein Verfahren und eine Vorrichtung zur effizienten elektrostatischen Entladung von mindestens zwei Blätter aufweisenden Druckereiprodukten zu schaffen.It is an object of the present invention to provide a method and apparatus for efficient electrostatic discharge of at least two-bladed printed products.

Diese Aufgabe wird mit einem Verfahren gemäss Anspruch 1 und einer Vorrichtung gemäss Anspruch 6 gelöst.This object is achieved by a method according to claim 1 and a device according to claim 6.

Mittels einer Ionenblasdüse wird ein mit Ionen versehener Luftstrahl erzeugt, der erfindungsgemäss gegen eine offene Seitenkante eines Druckereiprodukts geleitet wird. Mittels dieses Luftstrahl wird das Druckereiprodukt von der offenen Seitenkante her aufgeplustert und gleichzeitig entladen. Ein durch elektrostatische Aufladung der Druckereiprodukte erzeugtes Aneinanderhaften der Blätter der Druckereiprodukte wird durch die elektrostatische Entladung aufgehoben oder mindestens erheblich reduziert, was wiederum das Aufplustern verbessert und ein tieferes Eindringen des Luftstrahls in das jeweilige Druckereiprodukt zur weiteren elektrostatischen Entladung gewährleistet. Selbstverständlich können mehrere Ionenblasdüsen verwendet werden.By means of an ion-blowing nozzle, an air jet provided with ions is generated, which according to the invention is directed against an open side edge of a printed product. By means of this jet of air, the printed product is fluffed up from the open side edge and simultaneously discharged. A sticking together of the sheets of the printed products produced by electrostatic charging of the printed products is canceled out or at least considerably reduced by the electrostatic discharge, which in turn improves puffing and ensures deeper penetration of the air jet into the respective printed product for further electrostatic discharge. Of course, several ion-blast nozzles can be used.

Vorzugsweise wird eine Flachstrahl-Ionenblasdüse verwendet, welche einen flächigen Luftstrahl erzeugt. Ein optimaler Entladungseffekt wir dabei erzielt, wenn die offene Seitenkante und vorzugsweise das Druckereiprodukt sich in der Ebene des flächigen Luftstrahls befinden.Preferably, a flat-jet Ionenblasdüse is used, which generates a planar air jet. An optimal discharge effect is achieved when the open side edge and preferably the Druckereiprodukt are in the plane of the planar air jet.

In bevorzugter Weise ist dabei der Luftstrahl rechtwinklig zur offenen Seitenkante gerichtet. Dies ermöglicht ein homogenes Aufplustern und Entladen des Druckereiprodukts in einem möglichst grossen Bereich der Seitenkante.In a preferred manner, the air jet is directed at right angles to the open side edge. This enables a homogeneous fluffing and unloading of the printed product in the largest possible area of the side edge.

Da die elektrostatische Entladung ein sehr schnell ablaufender Prozess ist, können Druckereiprodukte während ihres Transports mittels eines stationären Luftstrahls und somit einer stationär angeordneten Ionenblasdüse entladen werden. Diesbezüglich besonders bevorzugte Weiterbildungsformen des erfindungsgemässen Verfahrens sind in den Ansprüchen 4 und 5 angegeben.Since electrostatic discharge is a very fast process, printed products can be discharged during their transport by means of a stationary jet of air and thus a stationary ion blowing nozzle. In this regard, particularly preferred forms of further development of the inventive method are given in claims 4 and 5.

Eine Vorrichtung zur Durchführung des erfindungsgemässen Verfahrens ist im Patentanspruch 6 definiert.An apparatus for carrying out the inventive method is defined in claim 6.

Bevorzugte Ausführungsformen der erfindungsgemässen Vorrichtung sind in den weiteren abhängigen Patentansprüchen angegeben.Preferred embodiments of the device according to the invention are specified in the further dependent claims.

Die Erfindung wird anhand in der Zeichnung dargestellten Ausführungsformen näher beschrieben. Es zeigen rein schematisch:

Fig. 1
in Ansicht eine erfindungsgemässe Verarbeitungseinrichtung, bei welcher Druckereiprodukte mittels einer Fördereinrichtung einer Stapeleinrichtung zugeführt und mittels eines von einer Ionenblasdüse erzeugten Luftstrahls elektrostatisch entladen werden;
Fig. 2
in Draufsicht einen Teil der in Fig. 1 gezeigten Einrichtung im vergrößerten Maßstab;
Fig. 3
in Ansicht eine weitere Verarbeitungseinrichtung für Druckereiprodukte, bei welcher diese mittels eines Klammertransporteurs gefördert und dabei mittels eines von einer Ionenblasdüse erzeugten Luftstrahls elektrostatisch entladen werden;
Fig. 4
eine weitere Verarbeitungseinrichtung, bei welcher mittels eines Bandförderers in Schuppenformation geförderte Druckereiprodukte mittels von Ionenblasdüsen erzeugten Luftstrahlen elektrostatisch entladen werden; und
Fig. 5
ein Druckereiprodukt einmal mit aneinander anliegenden Blättern und einmal aufgeplustert und dadurch voneinander abgehobenen Blättern.
The invention will be described in more detail with reference to embodiments shown in the drawing. It shows purely schematically:
Fig. 1
in view of a processing device according to the invention, in which printed products are fed by means of a conveyor of a stacking device and electrostatically discharged by means of an air jet generated by a Ionenblasdüse;
Fig. 2
in plan view part of the in Fig. 1 shown device in an enlarged scale;
Fig. 3
in view of a further processing device for printed products, in which they are conveyed by means of a Klammertransporteurs and are thereby discharged electrostatically by means of an air jet generated by a Ionenblasdüse;
Fig. 4
a further processing device in which printed products conveyed by means of a belt conveyor in imbricated formation are electrostatically discharged by means of air jets generated by ion-blast nozzles; and
Fig. 5
a printed product once with adjoining sheets and once puffed and thereby lifted from each other sheets.

In den Fig. 1 und 2 ist eine erste Ausführungsform einer erfindungsgemässen Vorrichtung zur elektrostatischen Entladung von Druckereiprodukten 10 dargestellt. Sie weist eine Verarbeitungseinrichtung 12 auf, welche einen Bewegungsweg 14 für die Druckereiprodukte 10 vorgibt. Sie weist eine als Bandförderer 16 ausgebildete Fördereinrichtung 18 sowie eine Stapeleinrichtung 20 auf, deren Stapelschacht 22 am, in Förderrichtung F der Fördereinrichtung 18, stromabwärts gelegenen Ende des Bandförderers 16 angeordnet ist. Der seitlich durch Schachtwände 24 begrenzte Stapelschacht 22 ist oben offen und in ihm ist ein Schachtboden 26 angeordnet, welcher in allgemein bekannter Art und Weise mittels eines Hubaggregats anhebbar und in Abhängigkeit von der Höhe des gebildeten Stapels 28 derart absenkbar ist, dass sich das jeweils oberste Druckereiprodukt 10 des Stapels 28 wenigstens annähernd auf einer vordefinierten Höhe befindet.In the Fig. 1 and 2 a first embodiment of an inventive device for the electrostatic discharge of printed products 10 is shown. It has a processing device 12, which has a Movement path 14 for the printed products 10 pretends. It has a belt conveyor 16 designed as a conveyor 18 and a stacking device 20, the stacking shaft 22 is arranged on the conveyor belt in the conveying direction F of the conveyor 18, downstream end of the belt conveyor 16. The laterally limited by shaft walls 24 stacking shaft 22 is open at the top and a shaft bottom 26 is arranged, which in a generally known manner by means of a Hubaggregats liftable and depending on the height of the formed stack 28 is lowered such that the uppermost Printed product 10 of the stack 28 is at least approximately at a predefined height.

Wie dies insbesondere der Fig. 2 entnehmbar ist, weist der Bandförderer 16 zwei nebeneinander angeordnete Förderbänder 30 auf (in der Fig. 2 sind der besseren Übersichtlichkeit halber keine Druckereiprodukte 10 gezeigt), welche gemeinsam in Förderrichtung F angetrieben sind und eine Auflagefläche für die Druckereiprodukte 10 bilden. Beim stromabwärts seitigen Ende ist jedes der Förderbänder 30 um eine ihm zugeordnete Umlenkwalze 32 geführt, wobei die beiden Umlenkwalzen 32 in Richtung ihrer Achse voneinander beabstandet an einem Maschinengestell 34 gelagert sind.How this in particular the Fig. 2 can be removed, the belt conveyor 16 has two juxtaposed conveyor belts 30 (in the Fig. 2 For the sake of clarity, no printed products 10 are shown), which are driven together in the conveying direction F and form a contact surface for the printed products 10. At the downstream end of each of the conveyor belts 30 is guided around a guide roller 32 associated therewith, wherein the two guide rollers 32 are mounted spaced apart in the direction of its axis on a machine frame 34.

Am Maschinengestell 34 ist weiter eine Ionenblasdüse 36, im vorliegenden Fall eine Flachstrahl-Ionenblasdüse befestigt, welche zwischen den beiden Förderbändern 30 und den Umlenkwalzen 32 angeordnet ist. Sie ist dazu bestimmt, einen parallel zur Förderrichtung F blasenden, flächigen Luftstrahl 38 zu erzeugen, der geladene Teilchen - Ionen - aufweist, wobei der flächige Luftstrahl 38 in einer von der Ionenblasdüse 36 bestimmten Ebene 40 verläuft, welche parallel zum Schachtboden 26 und somit parallel zu den gestapelten Druckereiprodukten 10 orientiert ist. Die Ionenblasdüse 36 befindet sich unterhalb der von der Förderbändern 30 definierten Auflagefläche für die Druckereiprodukte 10 und der Luftstrahl 38 bläst oberhalb der Ionenblasdüse 36 zugewandten Schachtwand 24 in den Stapelschacht 22 hinein.On the machine frame 34, a Ionenblasdüse 36, fixed in the present case, a flat-jet Ionenblasdüse which is disposed between the two conveyor belts 30 and the guide rollers 32 is further. It is meant to a plane air jet 38 which blows parallel to the conveying direction F and has charged particle ions, wherein the planar air jet 38 extends in a plane 40 determined by the ion blowing nozzle 36 which is parallel to the shaft bottom 26 and thus parallel to the stacked printed products 10 is oriented. The Ionenblasdüse 36 is located below the support surface 30 defined by the conveyor belts 30 for the printed products 10 and the air jet 38 blows above the Ionenblasdüse 36 facing shaft wall 24 into the stacking shaft 22 inside.

Die Ionenblasdüse 36 ist in bekannter Art und Weise einerseits an eine Hochspannungszuführung 42 und andererseits an eine Druckluftzuführung 44 angeschlossen. Die Hochspannungszuführung 44 führt in einem Netzgerät 46 erzeugte Hochspannung zur Elektrode bzw. den Elektroden der Ionenblasdüse 36. Entsprechend ist die Druckluftzuführung 44 an eine Druckluftquelle 48 angeschlossen. Als geeignet erweist sich beispielsweise eine Ionenblasdüse R35F der Firma Eltex-Elektrostatik GmbH, Weil am Rhein, mit einem entsprechenden Netzgerät 46.The Ionenblasdüse 36 is connected in a known manner on the one hand to a high voltage supply 42 and on the other hand to a compressed air supply 44. The high voltage supply 44 carries high voltage generated in a power supply unit 46 to the electrode or the electrodes of the ion blowing nozzle 36. Accordingly, the compressed air supply 44 is connected to a compressed air source 48. For example, an ion-blast nozzle R35F from Eltex-Elektrostatik GmbH, Weil am Rhein, with a corresponding power supply 46 proves to be suitable.

Bei den in der Fig. 1 gezeigten Druckereiprodukten 10 handelt es sich um mehrere Blätter 49, gefaltete Druckereiprodukte welche in einer Schuppenformation S dem Stapelschacht 22 zugeführt werden. Der Bewegungsweg 14 der Druckereiprodukte 10 verläuft somit auf dem Bandförderer 16 und bei dessen Ende in Fallrichtung der Druckereiprodukte 10 in den Stapelschacht 22 hinein. In der Schuppenformation S liegt jedes Druckereiprodukt 10 schuppenartig auf dem jeweils vorauslaufenden Druckereiprodukt 10 auf, wobei der rechtwinklig zur Förderrichtung F verlaufende Falz 50 bezüglich der diesem gegenüberliegenden offenen Seitenkante 52 des betreffenden Druckereiprodukts 10 vorlaufend ist.In the in the Fig. 1 shown printed products 10 is a plurality of sheets 49, folded printed products which are supplied in an imbricated formation S the stacking shaft 22. The movement path 14 of the printed products 10 thus runs on the belt conveyor 16 and at its end in the direction of the printed products 10 in the stacking shaft 22 into it. In the imbricated formation S, each printed product 10 is scaly on the respective leading printed product 10, wherein the perpendicular to the conveying direction F extending fold 50 with respect to this opposite open side edge 52 of the respective printed product 10 is leading.

Der Stapelschacht 22 wird von oben mittels Druckereiprodukten 10 bestückt, wobei diese mittels des Bandförderers 16 in horizontaler Richtung dem Eingang 54 des Stapelschachts 22 zugeführt werden. Der Schachtboden 26 wird in bekannter Art und Weise in einer Höhenlage derart verstellt, dass die Druckereiprodukte 10 in einer in Förderrichtung F gesehen fallenden Stufe auf den Schachtboden 26 bzw. den bereits gebildeten Stapel 28 fallen. Dadurch ist das jeweils oberste dem Stapelschacht 22 zugeführte Druckereiprodukt 10 durch das nachfolgende Druckereiprodukt 10 bei der und benachbart zur offenen Seitenkante 52 frei liegend und somit nicht belastet.The stacking shaft 22 is equipped from above by means of printed products 10, wherein these are supplied by means of the belt conveyor 16 in the horizontal direction to the input 54 of the stacking shaft 22. The shaft bottom 26 is adjusted in a known manner in an altitude such that the printed products fall 10 in a direction of conveying F falling stage on the shaft bottom 26 and the already formed stack 28. As a result, the uppermost stacking shaft 22 fed to the printed product 10 by the subsequent printed product 10 at and adjacent to the open side edge 52 is exposed and thus not burdened.

Die Druckereiprodukte 10 werden mittels des gegen ihre offene Seitenkante 52 gerichteten Luftstrahls 38 aufgeplustert und gleichzeitig elektrostatisch entladen. Dies erfolgt in der gezeigten Ausführungsform optimal dadurch, dass einerseits das oberste dem Stapelschacht 22 zugeführte Druckereiprodukt 10 bei seiner offenen Seitenkante 52 gegen oben frei liegt bis das nächst folgende Druckereiprodukt 10 dem Stapelschacht zugeführt ist und andererseits der Schachtboden 26 derart in seiner Höhenlage gesteuert ist, dass sich das jeweils oberste Druckereiprodukt 10 in der Ebene 40 des Luftstrahls 38 befindet.The printed products 10 are fluffed up by means of the directed against their open side edge 52 air jet 38 and discharged simultaneously electrostatically. This is done optimally in the embodiment shown in that on the one hand the top of the stacking shaft 22 fed printed product 10 is exposed at its open side edge 52 up against the next following printed product 10 is fed to the stacking shaft and on the other hand, the shaft bottom 26 is controlled in such a high altitude, that the respective uppermost printed product 10 is located in the plane 40 of the air jet 38.

Eine weitere Ausführungsform einer erfindungsgemässen Vorrichtung zur elektrostatischen Entladung von Druckereiprodukten 10 ist in Fig. 3 schematisch dargestellt. Die Verarbeitungseinrichtung 12 weist wiederum eine Fördereinrichtung 18 auf, welche jedoch als Klammertransporteur 56 ausgebildet ist. In bekannter Art und Weise werden Klammern 58 mittels eines Antriebsorgans 60, beispielsweise einem umlaufenden Zugorgan, in Förderrichtung F bewegt. Jede der Klammern 58 hält ein Druckereiprodukt 10 bei dessen Falz 50, wobei die Druckereiprodukte 10 in Hängelage transportiert werden. Der Bewegungsweg 14 der Druckereiprodukte ist somit durch den Klammertransporteur 56 bestimmt.A further embodiment of a device according to the invention for the electrostatic discharge of printed products 10 is shown in FIG Fig. 3 shown schematically. The processing device 12 in turn has a conveyor 18, which, however, is designed as a staple conveyor 56. In a known manner, staples 58 are moved in the conveying direction F by means of a drive member 60, for example a revolving tension member. Each of the staples 58 holds a printed product 10 at its fold 50, whereby the printed products 10 are transported in a hanging position. The movement path 14 of the printed products is thus determined by the staple conveyor 56.

Unterhalb des Klammertransporteurs 56 befinden sich zwei nebeneinander in einem Abstand - ähnlich der Förderbänder 30 der in den Fig. 1 und 2 gezeigten Ausführungsform - angeordnete Stützbändchen 62, die umlaufend derart angetrieben sind, dass das stützaktive, oben liegende Trum sich ebenfalls in Förderrichtung F mit wenigstens annähernd gleicher Geschwindigkeit wie die Klammern 58 bewegt. Der vertikale Abstand zwischen dem Klammertransporteur 56 und den Stützbändchen 62 ist kleiner als die entsprechende Dimension der Druckereiprodukte 10, sodass diese mit ihrer dem Falz 50 gegenüberliegenden, offenen Seitenkante 52 auf den Stützbändchen 62 aufliegen und die Druckereiprodukte 10 dadurch, entgegen der Förderrichtung F, im Wirkbereich der Stützbändchen 62 gebogen sind.Below the Klammertransporteurs 56 are two adjacent to each other at a distance - similar to the conveyor belts 30 in the Fig. 1 and 2 shown embodiment - arranged support ribbons 62 which are driven circumferentially so that the supportive, overhead strand also moves in the conveying direction F with at least approximately the same speed as the brackets 58. The vertical distance between the staple conveyor 56 and the support ribbons 62 is smaller than the corresponding dimension of the printed products 10, so that they rest with their folds 50 opposite, open side edge 52 on the support ribbons 62 and the printed products 10 thereby, against the conveying direction F, in Effective range of the support ribbons 62 are bent.

Zwischen den beiden Stützbändchen 62 ist die Ionenblasdüse 36, wiederum vorzugsweise eine Flachstrahl-Ionenblasdüse, derart angeordnet, dass der Luftstrahl 38 rechtwinklig auf die daran vorbeibewegten Seitenkanten 52 trifft und die durch den Luftstrahl 38 definierte Ebene 40, im Wirkbereich des Luftstrahls 38 auf die Druckereiprodukte 10, wenigstens annähernd mit einer durch den diesseitigen Endbereich der Druckereiprodukte 10 definierten Fläche zusammenfällt.Between the two support tapes 62, the ion-blast nozzle 36, again preferably a flat-jet ion-blast nozzle, is arranged such that the air jet 38 strikes the side edge 52 passing it at right angles and the plane 40 defined by the air jet 38 strikes the printed products in the effective region of the air jet 38 10, at least approximately coincident with an area defined by this side end region of the printed products 10 surface.

Während in der Fig. 1 mittig gefaltete Druckereiprodukte 10 gezeigt sind, halten die Klammern 58, beim Beispiel gemäss Fig. 3, aussermittig gefaltete Druckereiprodukte 10. Damit stehen die Blätter 49 des einen Produkteteils 64, im vorliegenden Fall des vorauslaufenden Produkteteils, mit einem streifenartigen Randbereich 66 über die Blätter 49 des anderen, hier nachlaufenden Produkteteils 64' vor. Da dieser Randbereich 66 beim Durchlaufen des Luftstrahls 38 wenigstens annähernd in der Ebene 40 liegt, erfolgt das Aufplustern des Druckereiprodukts 10 insbesondere zwischen den beiden Produkteteilen 64 und 64', wobei auch dort besonders stark die elektrostatische Entladung erfolgt, was ein nachfolgendes zuverlässiges mittiges Öffnen der Druckereiprodukte 10 erlaubt.While in the Fig. 1 centrally folded printed products 10 are shown, hold the brackets 58, in the example according to Fig. 3 , outwardly folded printed products 10. Thus, the leaves 49 of one product part 64, in the present case the leading product part, protrude with a strip-like edge region 66 over the leaves 49 of the other, here trailing product part 64 '. Since this edge region 66 is at least approximately in the plane 40 when passing through the air jet 38, the puffing of the printed product 10 takes place in particular between the two product parts 64 and 64 ', where the electrostatic discharge is particularly strong there as well, resulting in a subsequent reliable central opening of the product Printed products 10 allowed.

Es sei an diese Stelle erwähnt, dass mit der Verarbeitungseinrichtung 12 gemäss Fig. 3 auch mittig gefaltete Druckereiprodukte 10 und mit der Verarbeitungseinrichtung 12 gemäss den Fig. 1 und 2 auch aussermittig gefaltete Druckereiprodukte 10 verarbeitet werden können. Weiter ist es denkbar, bei der Ausführungsform gemäss Fig. 3, die Klammern 58 in Richtung des nur mit Umrissen gezeigten Pfeiles F, von links gegen rechts, anzutreiben. In diesem Fall sind die Stützbändchen 62 vorzugsweise mit grösserer Geschwindigkeit angetrieben als die Klammern 58, sodass die Druckereiprodukte 10 in Förderrichtung F gegen vorne gebogen sind. Auch in diesem Fall werden genau gleich wie weiter oben beschrieben, die an der Ionenblasdüse 36 vorbeibewegten Druckereiprodukte 10 von der offenen Seitenkante 52 her aufgeplustert und elektrostatisch entladen.It should be mentioned at this point that with the processing device 12 according to Fig. 3 also centrally folded printed products 10 and with the processing device 12 according to the Fig. 1 and 2 also processed eccentrically folded printed products 10 can be. Further, it is conceivable in the embodiment according to Fig. 3 to drive the staples 58 in the direction of the arrow F shown only with outlines, from left to right. In this case, the support ribbons 62 are preferably driven at a greater speed than the clamps 58, so that the printed products 10 are bent in the conveying direction F towards the front. Also in this case, exactly as described above, the printed products 10 moved past the ion blowing nozzle 36 are fluffed from the open side edge 52 and discharged electrostatically.

Fig. 4 zeigt eine weitere Ausführungsform einer erfindungsgemässen Verarbeitungseinrichtung 12 zum elektrostatischen Entladen von Druckereiprodukten 10. Die Fördereinrichtung 18 ist als, den Bewegungsweg 14 bestimmenden Bandförderer 16 ausgebildet, mittels welchem die Druckereiprodukte 10 in einer Schuppenformation S in Förderrichtung F transportiert werden. In dieser Schuppenformation S liegt jedes Druckereiprodukt 10 auf dem jeweils nachlaufenden Druckereiprodukt 10 auf, wobei jeweils der Falz 50 bezüglich der gegenüberliegenden offenen Seitenkante 52 vorauslaufend ist. Fig. 4 shows a further embodiment of a processing device 12 according to the invention for the electrostatic discharge of printed products 10. The conveyor 18 is formed as, the movement path 14 determining belt conveyor 16, by means of which the printed products 10 are transported in a scale formation S in the conveying direction F. In this imbricated formation S, each printed product 10 rests on the respectively trailing printed product 10, wherein in each case the fold 50 is leading in relation to the opposite open lateral edge 52.

Oberhalb des Bandförderers 16 sind zwei Ionenblasdüsen 36, vorzugsweise Flachstrahl-Ionenblasdüsen, in Förderrichtung F hintereinander angeordnet und derart ausgerichtet, dass die Ebenen 40 der Luftstrahle 38 wenigstens annähernd parallel zu den Druckereiprodukten 10 verlaufen. Die Luftstrahlen 38 sind in Förderrichtung F und schräg nach unten gerichtet, sodass sie rechtwinklig auf die Seitenkanten 52 auftreffen.Above the belt conveyor 16, two ion-blast nozzles 36, preferably flat-jet ion-blast nozzles, are arranged one behind the other in the conveying direction F and aligned such that the planes 40 of the air jets 38 extend at least approximately parallel to the printed products 10. The air jets 38 are in the conveying direction F and obliquely directed down so that they impinge at right angles to the side edges 52.

Weiter befinden sich oberhalb des Bandförderers 16 beidseitig der Ionenblasdüsen 36, ungefähr auf der Höhe deren Luftdüsenöffnungen, in Förderrichtung F verlaufende Begrenzungsstäbe 68. Diese verhindern ein allzu starkes Aufplustern der Druckereiprodukte 10, wenn sie an den Ionenblasdüsen 36 vorbeibewegt und dabei aufgeplustert und elektrostatisch Entladen werden.Next are located above the belt conveyor 16 on both sides of the Ionenblasdüsen 36, approximately at the level of their air nozzle openings, extending in the conveying direction F limiting rods 68. These prevent too much flaring of the printed products 10 when they move past the Ionenblasdüsen 36 and thereby fluffed and discharged electrostatically ,

Selbstverständlich ist es auch denkbar, den Bandförderer 16 entgegen der gezeigten Förderrichtung F anzutreiben. In diesem Fall ist die oben liegende, offene Seitenkante 52 bezüglich des Falzes 50 vorlaufend. In der Fig. 4 sind wiederum mittig gefaltete Druckereiprodukte 10 gezeigt. Es können jedoch auch aussermittig gefaltete Druckereiprodukte 10 verarbeitet werden, wobei der mit seinem Randbereich 66 über dem Produkteteil 64' vorstehende längere Produkteteil 64 vorzugsweise unten liegend angeordnet ist, wie dies Fig. 5 zeigt. Es erfolgt dann ein besonders starkes Aufplustern der Druckereiprodukte 10 mit gleichzeitig elektrostatischem Entladen zwischen den beiden Produkteteilen 64 und 64'. Mittels eines nur schematisch mit einem Pfeil dargestellten Öffnungselement 70 ist ein nachfolgendes mittiges Öffnen zuverlässig möglich.Of course, it is also conceivable to drive the belt conveyor 16 counter to the conveying direction F shown. In this case, the overhead, open side edge 52 is leading with respect to the fold 50. In the Fig. 4 are again shown in the middle folded printed products 10. However, it can also be processed eccentrically folded printed products 10, wherein the projecting with its edge region 66 above the product part 64 'longer product part 64 is preferably located below, as this Fig. 5 shows. There is then a particularly strong puffing of the printed products 10 with simultaneous electrostatic discharge between the two product parts 64 and 64 '. By means of an opening element 70 shown only schematically with an arrow, a subsequent central opening is reliably possible.

Bei den gezeigten Beispielen werden die Druckereiprodukte 10 bei ihrer dem Falz 50 gegenüberliegenden Seitenkante beblasen. Es ist jedoch auch möglich, die eine, oder beide, an den Falz 50 anschliessende offene Seitenkante zum elektrostatischen Entladen des Druckereiprodukts 10 mittels einer Ionenblasdüse 36 zu beblasen.In the examples shown, the printed products 10 are blown at their opposite side of the fold 50. However, it is also possible to blow the one, or both, adjoining the fold 50 open side edge for the electrostatic discharge of the printed product 10 by means of a Ionenblasdüse 36.

Claims (9)

  1. A method for discharging electrostatic charge in two-leaf and/or multi-leaf printed products, such as newspapers, periodicals or parts thereof, in which an air jet (38) is directed at an open side edge (52) of the printed product (10) by means of an ion nozzle (36) and the printed product (10) is fluffed up or bulged and is discharged from the side edge (52) by means of the air jet (38).
  2. The method as claimed in claim 1, wherein a planar air jet (38) is guided toward the side edge (52) by means of a flat jet ion nozzle, wherein the side edge (52) is at least approximately in the plane (40) of the air jet (38).
  3. The method as claimed in claim 1 or 2, wherein the air jet (38) is directed at the side edge (52) at at least approximately a right angle thereto.
  4. The method as claimed in one of claims 1 to 3, wherein the printed products (10) are fed, one after another, to a stacking shaft (22) by means of a conveyor device (18) and the air jet (38) is directed at the open side edge (52) at the opening (54) of the stacking shaft (22) or adjacent thereto.
  5. The method as claimed in one of claims 1 to 3, wherein the printed products (10) are transported with the open side edge (52) through the stationary air jet (38) by means of a conveyor device (18).
  6. An apparatus for discharging electrostatic charge in two-leaf and/or multi-leaf printed products (10), such as newspapers, periodicals or parts thereof, having an open side edge (52), comprising a processing device (12) for the printed products (10) which prescribes a movement path (14) of the printed products (10) and, arranged by the movement path (14), an ion nozzle (36), the air jet (38) thereof being directed at the open side edge (52) of the printed products (10) in order to fluff up and discharge the printed products (10) passing by the ion nozzle (36) from the open side edge (52).
  7. The apparatus as claimed in claim 6, wherein the ion nozzle (36) is a flat jet ion nozzle.
  8. The apparatus as claimed in claim 6 or 7, wherein the processing device (12) comprises a conveyor device (18) for the printed products (10) and a stacking shaft (22) to which the printed products (10) can be fed, one after the other, by means of the conveyor device (18), wherein the ion nozzle (36) is arranged at the opening (54) of the stacking shaft (22) or adjacent thereto.
  9. The apparatus as claimed in claim 6 or 7, wherein the processing device (12) comprises a conveyor device (18) for the printed products (10) which moves the printed products (10) past the stationary ion nozzle (36).
EP08019479A 2008-01-31 2008-11-07 Method and device for electrostatic discharge of multiple paged printer products Not-in-force EP2086292B1 (en)

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ES2692416B2 (en) * 2018-07-31 2019-04-08 Carlos Bacigalupe Slu FEEDER FOR COIL LABEL LABEL
WO2020058964A1 (en) 2018-09-23 2020-03-26 Nilesh Dhirajlal Parmar A sheet feeder and method of making the same
JP2024098211A (en) * 2023-01-10 2024-07-23 セイコーエプソン株式会社 Media conveying device, liquid ejection device, post-processing device

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Publication number Priority date Publication date Assignee Title
US3617049A (en) * 1969-10-14 1971-11-02 Testone Electrostatics Corp Sheet feeding apparatus
US5228373A (en) * 1990-01-08 1993-07-20 Robert A. Foisie Method and apparatus using electrostatic charges to temporarily hold packets of paper
US5402304A (en) * 1993-02-18 1995-03-28 Smith; Dirk S. Static eliminator air enhancement device
DE19711342C2 (en) * 1997-03-18 1999-01-21 Eltex Elektrostatik Gmbh Active discharge electrode
DE19947140C2 (en) 1999-08-19 2002-05-08 Eltex Elektrostatik Gmbh Active ionization device
DE29923560U1 (en) 1999-09-30 2001-02-22 Eltex-Elektrostatik Gmbh, 79576 Weil Am Rhein Active ionization device
DE202005012541U1 (en) 2004-10-25 2006-03-09 Eltex-Elektrostatik Gmbh A method for discharging and electrostatic charge from both sides of a band of material has a brush on one side electrically connected to a drum on the other side
DE202006009823U1 (en) 2005-12-21 2006-11-16 Eltex-Elektrostatik Gmbh Device for contactless removal of electrostatic electrical double layer from flat electrically insulating material has contactless compensating device for feed of charge particles to flat material for compensation of charges
DE102006029066B4 (en) * 2006-06-24 2012-09-06 Heike Kersten Device for powder-dusting

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CA2650179A1 (en) 2009-07-31
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AU2008261184A1 (en) 2009-08-20
US8064184B2 (en) 2011-11-22
DK2086292T3 (en) 2011-08-15
US20090195631A1 (en) 2009-08-06

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