EP0739723A2 - Floating element for guiding sheets in a printing machine or the like - Google Patents

Floating element for guiding sheets in a printing machine or the like Download PDF

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Publication number
EP0739723A2
EP0739723A2 EP96106225A EP96106225A EP0739723A2 EP 0739723 A2 EP0739723 A2 EP 0739723A2 EP 96106225 A EP96106225 A EP 96106225A EP 96106225 A EP96106225 A EP 96106225A EP 0739723 A2 EP0739723 A2 EP 0739723A2
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EP
European Patent Office
Prior art keywords
air
floating element
element according
housing
sheet
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
EP96106225A
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German (de)
French (fr)
Other versions
EP0739723A3 (en
EP0739723B1 (en
EP0739723B2 (en
Inventor
Richard Mack
Wolfram Hofmann
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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Publication date
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Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0739723A2 publication Critical patent/EP0739723A2/en
Publication of EP0739723A3 publication Critical patent/EP0739723A3/en
Publication of EP0739723B1 publication Critical patent/EP0739723B1/en
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines

Definitions

  • the invention relates to a floating element for guiding sheets in a sheet-processing machine, in particular in a printing press, according to the preamble of patent claim 1.
  • Floating elements are known, which are used in brackets or guides of the printing press between printing units or in the area of a sheet delivery, in order to improve the sheet guidance particularly at critical points.
  • Floating elements are used in different designs for floating arch support on an air cushion, for arch tightening, arch smoothing, for arch braking, by suction for floating arch transport. They consist of a mostly rod-shaped housing which is fixedly arranged in the machine, with air nozzles arranged on the outside of the sheet and a housing interior which can be connected to the compressed air system and / or to the suction air system of the machine.
  • the necessary use of such floating elements depends to a large extent on the nature of the substrate, but also on operating conditions. Floating elements are therefore required for different tasks at different points depending on the type of order to be processed. Floating elements that are not required are often a nuisance in the way.
  • the air is supplied by external control with compressed air or with suction air.
  • the inventive features create a floating element which can be used at any point on a printing press and which is effective in itself and is therefore not dependent on existing compressed air or suction air connections.
  • a levitation element with the features of the invention should be able to be used retrospectively at any point on a sheet-processing machine, in particular a printing machine, for sheet stretching, sheet braking, sheet acceleration or sheet feeding, in particular when moving, unrolling or holding.
  • Each floating element is preferably equipped with a high-speed blower or, if appropriate, also with a plurality of high-speed blowers, which has an electromotive drive with a control program that can be integrated into the machine program.
  • the or the blowers of each floating element are preferably reversible in the direction of rotation, so that either compressed air or suction air for the sheet guide can be supplied by the integrated drive control program.
  • FIG. 1 An embodiment with a housing that is as flat as possible in a sandwich construction is preferred, so that a floating element with the features of the invention can also be accommodated in narrow installation spaces. If necessary, floating elements can be composed of air-guiding housing parts and other housing parts that receive the air source.
  • a further development of the invention provides that a plurality of air-guiding housing parts and optionally also a plurality of housing parts each receiving an air source can be connected to one another in such a way that complementary coupling members automatically act like a plug-in coupling Make connections between the housing parts.
  • complementary coupling parts of an electrical connection coupling are provided both on the machine and on housing parts of the levitation elements, which automatically establish electrical contact between the motor drive means of the levitation element when the levitation elements are installed.
  • the design can be optimized by coordinating the nozzle characteristics and the blower characteristics.
  • FIGS 1 and 2 each show side views of different levitation elements with the features of the invention.
  • FIG. 1 shows a floating element made of a rod-shaped sheet metal housing 1, which consists of a lower part (1a) with a cross-section which is approximately U-shaped and an upper part (1b) sealing its upper side, this upper part being at intervals from one another and blowing nozzles 2 arranged one behind the other having.
  • the upper part and lower part of the sheet metal housing are airtightly connected to one another at overlapping edges.
  • the elongated housing 1 is coupled at one end to an ejector 3, which is connected to the air-conducting interior of the housing 1.
  • the ejector 3 is connected via a compressed air line 4 to a correspondingly dimensioned compressed air source or, if appropriate, also to a compressed air system of a machine which is under a correspondingly high prestress.
  • a blower or the like can also be provided in a housing part, as has already been explained above.
  • FIG. 2 shows a floating element which, based on the example in FIG. 1, likewise has a rod-shaped housing 1.
  • the housing is connected to a blower 5, which has an electromotive drive, the direction of action of which is preferably reversible in order to be able to use the same floating element both for guiding the sheet with compressed air and for guiding the sheet with suction air.
  • the electromotive drives of the blower 5 or possibly several blowers are programmable so that the control programs can be integrated into the machine control program. Air outlet nozzles, suction nozzles or the like are arranged in the region of the arrows shown in FIG.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Discharge By Other Means (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The element has a rod-shaped housing (1) of sheet metal with a U-section underpart (1a) and an upper part (1b) containing a row of nozzles (2). The overlapped edges of the two parts form an airtight seal. An ejector (3) at one end is connected to the interior space and supplied with air under pressure from an air line (4). The source of compressed air is a high-speed fan with an integrated electric drive control program which allows reversal so that a sheet may be guided by either blowing or suction.

Description

Die Erfindung bezieht sich auf ein Schwebeelement zur Bogenführung in einer Bogen bearbeitenden Maschine, insbesondere in einer Druckmaschine, nach dem Oberbegriff des Patentanspruches 1.The invention relates to a floating element for guiding sheets in a sheet-processing machine, in particular in a printing press, according to the preamble of patent claim 1.

Bekannt sind Schwebeelemente, die in Halterungen oder Führungen der Druckmaschine zwischen Druckwerken oder im Bereich eines Bogenauslegers eingesetzt sind, um die Bogenführung besonders an kritischen Stellen zu verbessern. Schwebeelemente werden in unterschiedlicher Ausbildung zur schwebenden Bogenstützung auf einem Luftpolster, zur Bogenstraffung, Bogenglättung, zum Bogenbremsen, durch Ansaugung zum schwebend ziehenden Bogentransport eingesetzt. Sie bestehen aus einem meistens stabförmigen, fest in der Maschine angeordneten Gehäuse mit an der den Bogen führenden Auβenseite angeordneten Luftdüsen und einem an das Druckluftsystem und/oder an das Saugluftsystem der Maschine anschließbaren Gehäuseinnenraum. Der notwendige Einsatz solcher Schwebeelemente ist in hoheml Maße von der Beschaffenheit des Bedruckstoffes, aber auch von Betriebsbedingungen abhängig. Schwebeelemente werden daher je nach der Art des abzuwickelnden Auftrages für unterschiedliche Aufgabe an unterschiedlichen Stellen benötigt. Häufig sind nicht benötigte Schwebeelemente störend im Wege. Die Luftversorgung erfolgt durch externe Ansteuerung mit Druckluft oder mit Saugluft.Floating elements are known, which are used in brackets or guides of the printing press between printing units or in the area of a sheet delivery, in order to improve the sheet guidance particularly at critical points. Floating elements are used in different designs for floating arch support on an air cushion, for arch tightening, arch smoothing, for arch braking, by suction for floating arch transport. They consist of a mostly rod-shaped housing which is fixedly arranged in the machine, with air nozzles arranged on the outside of the sheet and a housing interior which can be connected to the compressed air system and / or to the suction air system of the machine. The necessary use of such floating elements depends to a large extent on the nature of the substrate, but also on operating conditions. Floating elements are therefore required for different tasks at different points depending on the type of order to be processed. Floating elements that are not required are often a nuisance in the way. The air is supplied by external control with compressed air or with suction air.

Es ist Aufgabe der Erfindung, ein Schwebeelement der eingangs genannten Bauart als kompakten Baustein in unterschiedlichen Bereichen wahlweise einsetzbar zu gestalten.It is an object of the invention to design a floating element of the type mentioned at the outset as a compact component which can be used in different areas.

Die Lösung dieser Aufgabe besteht nach der Erfindung in Ausbildungsmerkmalen nach dem Patentanspruch 1.This object is achieved according to the invention in training features according to claim 1.

Es wird durch die Erfindungsmerkmale ein an beliebiger Stelle einer Druckmaschine einsetzbares Schwebeelement geschaffen, welches in sich selbständig wirksam und somit nicht auf vorhandene Druckluft- oder Saugluftanschlüsse angewiesen ist. Ein Schwebeelement mit den Erfindungsmerkmalen soll nachträglich an beliebiger Stelle einer Bogen bearbeitenden Maschine, insbesondere einer Druckmaschine, eingesetzt werden können, und zwar zum Bogenstrecken, Bogenbremsen, Bogenbeschleunigen oder Bogenführen, insbesondere beim Umführen, Abrollen oder Halten.The inventive features create a floating element which can be used at any point on a printing press and which is effective in itself and is therefore not dependent on existing compressed air or suction air connections. A levitation element with the features of the invention should be able to be used retrospectively at any point on a sheet-processing machine, in particular a printing machine, for sheet stretching, sheet braking, sheet acceleration or sheet feeding, in particular when moving, unrolling or holding.

Vorzugsweise ist jedes Schwebeelement mit einem hochtourigen Gebläse oder gegebenenfalls auch mit mehreren hochtourigen Geblasen ausgerüstet, die einen elektromotorischen Antrieb mit einem in das Maschinenprogramm integrierbaren Steuerprogramm aufweist. Das oder die Gebläse jedes Schwebeelementes sind vorzugsweise in der Drehrichtung umkehrbar, so daß durch das integrierte Antriebssteuerprogramm wahlweise Druckluft oder Saugluft für die Bogenführung zugeführt werden kann.Each floating element is preferably equipped with a high-speed blower or, if appropriate, also with a plurality of high-speed blowers, which has an electromotive drive with a control program that can be integrated into the machine program. The or the blowers of each floating element are preferably reversible in the direction of rotation, so that either compressed air or suction air for the sheet guide can be supplied by the integrated drive control program.

Bevorzugt wird eine Ausbildung mit einem möglichst flachen Gehäuse in Sandwichbauweise, damit die Unterbringung eines Schwebeelements mit den Erfindungsmerkmalen auch in engen Bauräumen möglich ist. Gegebenenfalls können Schwebeelemente aus luftführenden Gehäuseteilen und anderen, die Luftquelle aufnehmenden Gehäuseteilen zusammengesetzt sein. Eine weitergehende Ausbildung der Erfindung sieht vor, daß mehrere luftführende Gehäuseteile und gegebenenfalls auch mehrere jeweils eine Luftquelle aufnehmende Gehäuseteile untereinander in der Weise verbindbar sind, daß komplementäre Kupplungsglieder nach Art einer Steckkupplung selbsttätig Verbindungsanschlüsse der Gehäuseteile untereinander bewirken. Darüberhinaus kann vorgesehen sein, daß sowohl an der Maschine als auch an Gehäuseteilen der Schwebeelemente komplementäre Kupplungsteile einer elektrischen Anschlußkupplung vorgesehen sind, die bei der Montage der Schwebeelemente selbsttätig einen elektrischen Kontakt der motorischen Antriebsmittel des Schwebeelementes herstellen. Eine Optimierung der Konstruktion läßt sich durch Abstimmung der Düsenkennlinien und der Gebläsekennlinien erreichen.An embodiment with a housing that is as flat as possible in a sandwich construction is preferred, so that a floating element with the features of the invention can also be accommodated in narrow installation spaces. If necessary, floating elements can be composed of air-guiding housing parts and other housing parts that receive the air source. A further development of the invention provides that a plurality of air-guiding housing parts and optionally also a plurality of housing parts each receiving an air source can be connected to one another in such a way that complementary coupling members automatically act like a plug-in coupling Make connections between the housing parts. In addition, it can be provided that complementary coupling parts of an electrical connection coupling are provided both on the machine and on housing parts of the levitation elements, which automatically establish electrical contact between the motor drive means of the levitation element when the levitation elements are installed. The design can be optimized by coordinating the nozzle characteristics and the blower characteristics.

Auf der Zeichnung sind Ausführungsbeispiele zweier Ausbildungen der Erfindungsmerkmale dargestellt.Exemplary embodiments of two embodiments of the inventive features are shown in the drawing.

Die Figuren 1 und 2 zeigen jeweils Seitenansichten unterschiedlicher Schwebeelemente mit den Erfindungsmerkmalen.Figures 1 and 2 each show side views of different levitation elements with the features of the invention.

Die Figur 1 zeigt ein Schwebeelement aus einem stabförmigen Blechgehäuse 1, welches aus einem im Querschnitt etwa U-förmigen Unterteil (1a) und einem dessen Oberseite dicht abschließenden Oberteil (1b) besteht, wobei dieses Oberteil in Abständen voneinander und in Reihe hintereinander liegende Blasdüsen 2 aufweist. Oberteil und Unterteil des Blechgehäuses sind an sich überlappenden Rändern luftdicht miteinander verbunden. An einem Stirnende ist das langgestreckte Gehäuse 1 im Ausführungsbeispiel mit einem Ejektor 3 gekuppelt, der mit dem luftführenden Innenraum des Gehäuses 1 verbunden ist. Im Falle des Ausführungsbeispieles ist der Ejektor 3 über eine Druckluftleitung 4 mit einer entsprechend bemessenen Druckluftquelle oder gegebenenfalls auch mit einem unter entsprechend hoher Vorspannung stehenden Druckluftsystem einer Maschine verbunden. Anstelle des Ejektors 3 kann in einem Gehäuseteil auch ein Gebläse oder dergleichen vorgesehen sein, wie es weiter oben bereits erläutert wurde.FIG. 1 shows a floating element made of a rod-shaped sheet metal housing 1, which consists of a lower part (1a) with a cross-section which is approximately U-shaped and an upper part (1b) sealing its upper side, this upper part being at intervals from one another and blowing nozzles 2 arranged one behind the other having. The upper part and lower part of the sheet metal housing are airtightly connected to one another at overlapping edges. In the exemplary embodiment, the elongated housing 1 is coupled at one end to an ejector 3, which is connected to the air-conducting interior of the housing 1. In the case of the exemplary embodiment, the ejector 3 is connected via a compressed air line 4 to a correspondingly dimensioned compressed air source or, if appropriate, also to a compressed air system of a machine which is under a correspondingly high prestress. Instead of the ejector 3, a blower or the like can also be provided in a housing part, as has already been explained above.

Das Ausführungsbeispiel in Figur 2 zeigt ein Schwebeelement, welches in Anlehnung an das Beispiel in Figur 1 ebenfalls ein stabförmiges Gehäuse 1 aufweist. Das Gehäuse ist mit einem Gebläse 5 verbunden, welches einen elektromotorischen Antrieb aufweist, wobei dessen Wirkungsrichtung vorzugsweise umkehrbar ist, um das gleiche Schwebeelement sowohl für die Bogenführung mit Druckluft als auch für die Bogenführung mit Saugluft benutzen zu können. Die elektromotorischen Antriebe des Gebläses 5 oder eventuell mehrerer Gebläse, sind programmierbar, so daß die Steuerprogramme in das Maschinensteuerprogramm integriert werden können. Im Bereich der in Figur 2 dargestellten Pfeile sind Luftaustrittsdüsen, Saugdüsen oder dergleichen angeordnet.The exemplary embodiment in FIG. 2 shows a floating element which, based on the example in FIG. 1, likewise has a rod-shaped housing 1. The housing is connected to a blower 5, which has an electromotive drive, the direction of action of which is preferably reversible in order to be able to use the same floating element both for guiding the sheet with compressed air and for guiding the sheet with suction air. The electromotive drives of the blower 5 or possibly several blowers are programmable so that the control programs can be integrated into the machine control program. Air outlet nozzles, suction nozzles or the like are arranged in the region of the arrows shown in FIG.

BezugszeichenlisteReference list

11
Gehäusecasing
1a1a
GehäuseunterteilLower part of the housing
1b1b
GehäuseoberteilUpper part of the housing
22nd
LuftdüseAir nozzle
33rd
EjektorEjector
44th
Leitungmanagement
55
Gebläsefan

Claims (7)

Schwebeelement zur Bogenführung in einer Bogen bearbeitenden Maschine, insbesondere in einer Druckmaschine, dessen Gehäuse an einer den Bogen führenden Seite Luftdüsen aufweist, die über einen Gehäuseinnenraum mit einer Druck- oder Saugluftquelle verbindbar sind,
dadurch gekennzeichnet,
daß es als Kompaktelement mit integrierter Luftquelle (3,5) ausgebildet und als Baustein wahlweise einsetzbar ist.Floating element for guiding sheets in a sheet-processing machine, in particular in a printing press, the housing of which has air nozzles on one side guiding the sheet, which nozzles can be connected to a source of compressed air or suction air via a housing interior,
characterized,
that it is designed as a compact element with an integrated air source (3,5) and can be used as a module. Schwebeelement nach Anspruch 1,
dadurch gekennzeichnet,
daβ die Luftquelle aus einem hochtourigen Gebläse (5) mit integriertem Programm für die Steuerung des Gebläseantriebes besteht.Floating element according to claim 1,
characterized,
that the air source consists of a high-speed fan (5) with an integrated program for controlling the fan drive. Schwebeelement nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daβ es ein in der Wirkungsrichtung umkehrbares, elektrisch angetriebenes Gebläse (5) aufweist.Floating element according to one of the preceding claims,
characterized,
that it has an electrically driven fan (5) which is reversible in the direction of action. Schwebeelement nach einem vorhergehenden Anspruch,
dadurch gekennzeichnet,
daβ es mehrere integrierte Luftquellen aufweist.Floating element according to a preceding claim,
characterized,
that it has multiple integrated air sources. Schwebeelement nach den Ansprüchen 1 bis 4,
dadurch gekennzeichnet,
daß ein luftführendes Gehäuseteil mit einem die Luftquelle mit deren Steuerung aufnehmenden Gehäuseteil verbunden ist.Floating element according to claims 1 to 4,
characterized,
that an air-guiding housing part is connected to a housing part receiving the air source with its control. Schwebeelement nach Anspruch 5,
dadurch gekennzeichnet,
daβ die beiden Gehäuseteile in Längsrichtung des luftführenden Gehäuseteiles untereinander verbindbar sind und komplementäre Kupplungsglieder nach Art einer Steckkupplung aufweisen, durch die Verbindungsanschläge selbsttätig bewirkt werden.Floating element according to claim 5,
characterized,
that the two housing parts can be connected to one another in the longitudinal direction of the air-guiding housing part and have complementary coupling elements in the manner of a plug-in coupling, by means of which connection stops are automatically brought about. Schwebeelement nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daβ es elektrisch gesteuerte Antriebsmittel für das Gebläse (5) und selbsttätig beim Positionieren des Schwebeelements einen elektrischen Anschluβ herstellende Kupplungselemente aufweist.Floating element according to one of the preceding claims,
characterized,
that it has electrically controlled drive means for the blower (5) and, automatically when the floating element is positioned, an electrical connection-producing coupling element.
EP96106225A 1995-04-29 1996-04-19 Floating element for guiding sheets in a printing machine or the like Expired - Lifetime EP0739723B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995115846 DE19515846C2 (en) 1995-04-29 1995-04-29 Floating element for guiding sheets in a printing press or the like
DE19515846 1995-04-29

Publications (4)

Publication Number Publication Date
EP0739723A2 true EP0739723A2 (en) 1996-10-30
EP0739723A3 EP0739723A3 (en) 1997-04-02
EP0739723B1 EP0739723B1 (en) 1999-06-23
EP0739723B2 EP0739723B2 (en) 2003-10-01

Family

ID=7760723

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EP96106225A Expired - Lifetime EP0739723B2 (en) 1995-04-29 1996-04-19 Floating element for guiding sheets in a printing machine or the like

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EP (1) EP0739723B2 (en)
JP (1) JP3909886B2 (en)
DE (1) DE19515846C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005047000A1 (en) * 2003-11-17 2005-05-26 Silverbrook Research Pty Ltd Blower box assembly for a printer
CN114636541A (en) * 2022-05-17 2022-06-17 中国空气动力研究与发展中心设备设计与测试技术研究所 Hot gas source injection system capable of being assembled rapidly in modularized mode

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1970334A3 (en) 2007-03-15 2009-12-30 Heidelberger Druckmaschinen Aktiengesellschaft Soil cultivation machine with pneumatic transport device

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GB668741A (en) * 1949-01-21 1952-03-19 Svenska Flaektfabriken Ab Apparatus for drying web-like material
GB1190634A (en) * 1966-11-23 1970-05-06 Vits G M B H Maschf Air Support System for Webs of Material.
DE2603483A1 (en) † 1976-01-30 1977-08-18 Mohn Ohg Reinhard SCHOEN- AND REPRINTING PROCEDURES AND DEVICE FOR CARRYING OUT THE PROCESS
GB2116510A (en) * 1982-03-15 1983-09-28 Grace W R & Co Compact air bar assembly for contactless web support
US4572071A (en) * 1984-03-24 1986-02-25 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Device for guiding sheets printed on one or both sides
DE3829505A1 (en) † 1987-09-25 1989-04-06 Polygraph Leipzig Sheet-conveying device in deliverers of printing machines
US5379999A (en) * 1993-07-23 1995-01-10 Eastman Kodak Company Sheet media handling apparatus

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Publication number Priority date Publication date Assignee Title
GB668741A (en) * 1949-01-21 1952-03-19 Svenska Flaektfabriken Ab Apparatus for drying web-like material
GB1190634A (en) * 1966-11-23 1970-05-06 Vits G M B H Maschf Air Support System for Webs of Material.
DE2603483A1 (en) † 1976-01-30 1977-08-18 Mohn Ohg Reinhard SCHOEN- AND REPRINTING PROCEDURES AND DEVICE FOR CARRYING OUT THE PROCESS
GB2116510A (en) * 1982-03-15 1983-09-28 Grace W R & Co Compact air bar assembly for contactless web support
US4572071A (en) * 1984-03-24 1986-02-25 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Device for guiding sheets printed on one or both sides
DE3829505A1 (en) † 1987-09-25 1989-04-06 Polygraph Leipzig Sheet-conveying device in deliverers of printing machines
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* Cited by examiner, † Cited by third party
Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005047000A1 (en) * 2003-11-17 2005-05-26 Silverbrook Research Pty Ltd Blower box assembly for a printer
CN114636541A (en) * 2022-05-17 2022-06-17 中国空气动力研究与发展中心设备设计与测试技术研究所 Hot gas source injection system capable of being assembled rapidly in modularized mode
CN114636541B (en) * 2022-05-17 2022-07-22 中国空气动力研究与发展中心设备设计与测试技术研究所 Hot gas source injection system capable of being assembled rapidly in modularized mode

Also Published As

Publication number Publication date
DE19515846C2 (en) 2000-06-08
JP3909886B2 (en) 2007-04-25
EP0739723A3 (en) 1997-04-02
EP0739723B1 (en) 1999-06-23
DE19515846A1 (en) 1996-10-31
EP0739723B2 (en) 2003-10-01
JPH08301478A (en) 1996-11-19

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